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<html><head><title>dlib C++ Library - jdmarker.c</title></head><body bgcolor='white'><pre> |
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<font color='#009900'>/*
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* jdmarker.c
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*
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* Copyright (C) 1991-1998, Thomas G. Lane.
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* Modified 2009 by Guido Vollbeding.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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* This file contains routines to decode JPEG datastream markers.
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* Most of the complexity arises from our desire to support input
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* suspension: if not all of the data for a marker is available,
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* we must exit back to the application. On resumption, we reprocess
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* the marker.
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*/</font>
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<font color='#0000FF'>#define</font> JPEG_INTERNALS
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='jinclude.h.html'>jinclude.h</a>"
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='jpeglib.h.html'>jpeglib.h</a>"
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<font color='#0000FF'>typedef</font> <font color='#0000FF'>enum</font> <b>{</b> <font color='#009900'>/* JPEG marker codes */</font>
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M_SOF0 <font color='#5555FF'>=</font> <font color='#979000'>0xc0</font>,
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M_SOF1 <font color='#5555FF'>=</font> <font color='#979000'>0xc1</font>,
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M_SOF2 <font color='#5555FF'>=</font> <font color='#979000'>0xc2</font>,
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M_SOF3 <font color='#5555FF'>=</font> <font color='#979000'>0xc3</font>,
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M_SOF5 <font color='#5555FF'>=</font> <font color='#979000'>0xc5</font>,
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M_SOF6 <font color='#5555FF'>=</font> <font color='#979000'>0xc6</font>,
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M_SOF7 <font color='#5555FF'>=</font> <font color='#979000'>0xc7</font>,
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M_JPG <font color='#5555FF'>=</font> <font color='#979000'>0xc8</font>,
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M_SOF9 <font color='#5555FF'>=</font> <font color='#979000'>0xc9</font>,
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M_SOF10 <font color='#5555FF'>=</font> <font color='#979000'>0xca</font>,
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M_SOF11 <font color='#5555FF'>=</font> <font color='#979000'>0xcb</font>,
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M_SOF13 <font color='#5555FF'>=</font> <font color='#979000'>0xcd</font>,
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M_SOF14 <font color='#5555FF'>=</font> <font color='#979000'>0xce</font>,
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M_SOF15 <font color='#5555FF'>=</font> <font color='#979000'>0xcf</font>,
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M_DHT <font color='#5555FF'>=</font> <font color='#979000'>0xc4</font>,
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M_DAC <font color='#5555FF'>=</font> <font color='#979000'>0xcc</font>,
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M_RST0 <font color='#5555FF'>=</font> <font color='#979000'>0xd0</font>,
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M_RST1 <font color='#5555FF'>=</font> <font color='#979000'>0xd1</font>,
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M_RST2 <font color='#5555FF'>=</font> <font color='#979000'>0xd2</font>,
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M_RST3 <font color='#5555FF'>=</font> <font color='#979000'>0xd3</font>,
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M_RST4 <font color='#5555FF'>=</font> <font color='#979000'>0xd4</font>,
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M_RST5 <font color='#5555FF'>=</font> <font color='#979000'>0xd5</font>,
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M_RST6 <font color='#5555FF'>=</font> <font color='#979000'>0xd6</font>,
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M_RST7 <font color='#5555FF'>=</font> <font color='#979000'>0xd7</font>,
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M_SOI <font color='#5555FF'>=</font> <font color='#979000'>0xd8</font>,
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M_EOI <font color='#5555FF'>=</font> <font color='#979000'>0xd9</font>,
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M_SOS <font color='#5555FF'>=</font> <font color='#979000'>0xda</font>,
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M_DQT <font color='#5555FF'>=</font> <font color='#979000'>0xdb</font>,
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M_DNL <font color='#5555FF'>=</font> <font color='#979000'>0xdc</font>,
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M_DRI <font color='#5555FF'>=</font> <font color='#979000'>0xdd</font>,
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M_DHP <font color='#5555FF'>=</font> <font color='#979000'>0xde</font>,
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M_EXP <font color='#5555FF'>=</font> <font color='#979000'>0xdf</font>,
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M_APP0 <font color='#5555FF'>=</font> <font color='#979000'>0xe0</font>,
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M_APP1 <font color='#5555FF'>=</font> <font color='#979000'>0xe1</font>,
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M_APP2 <font color='#5555FF'>=</font> <font color='#979000'>0xe2</font>,
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M_APP3 <font color='#5555FF'>=</font> <font color='#979000'>0xe3</font>,
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M_APP4 <font color='#5555FF'>=</font> <font color='#979000'>0xe4</font>,
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M_APP5 <font color='#5555FF'>=</font> <font color='#979000'>0xe5</font>,
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M_APP6 <font color='#5555FF'>=</font> <font color='#979000'>0xe6</font>,
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M_APP7 <font color='#5555FF'>=</font> <font color='#979000'>0xe7</font>,
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M_APP8 <font color='#5555FF'>=</font> <font color='#979000'>0xe8</font>,
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M_APP9 <font color='#5555FF'>=</font> <font color='#979000'>0xe9</font>,
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M_APP10 <font color='#5555FF'>=</font> <font color='#979000'>0xea</font>,
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M_APP11 <font color='#5555FF'>=</font> <font color='#979000'>0xeb</font>,
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M_APP12 <font color='#5555FF'>=</font> <font color='#979000'>0xec</font>,
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M_APP13 <font color='#5555FF'>=</font> <font color='#979000'>0xed</font>,
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M_APP14 <font color='#5555FF'>=</font> <font color='#979000'>0xee</font>,
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M_APP15 <font color='#5555FF'>=</font> <font color='#979000'>0xef</font>,
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M_JPG0 <font color='#5555FF'>=</font> <font color='#979000'>0xf0</font>,
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M_JPG13 <font color='#5555FF'>=</font> <font color='#979000'>0xfd</font>,
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M_COM <font color='#5555FF'>=</font> <font color='#979000'>0xfe</font>,
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M_TEM <font color='#5555FF'>=</font> <font color='#979000'>0x01</font>,
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M_ERROR <font color='#5555FF'>=</font> <font color='#979000'>0x100</font>
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<b>}</b> JPEG_MARKER;
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<font color='#009900'>/* Private state */</font>
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<font color='#0000FF'>typedef</font> <font color='#0000FF'>struct</font> <b>{</b>
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<font color='#0000FF'>struct</font> jpeg_marker_reader pub; <font color='#009900'>/* public fields */</font>
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<font color='#009900'>/* Application-overridable marker processing methods */</font>
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jpeg_marker_parser_method process_COM;
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jpeg_marker_parser_method process_APPn[<font color='#979000'>16</font>];
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<font color='#009900'>/* Limit on marker data length to save for each marker type */</font>
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> length_limit_COM;
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> length_limit_APPn[<font color='#979000'>16</font>];
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<font color='#009900'>/* Status of COM/APPn marker saving */</font>
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jpeg_saved_marker_ptr cur_marker; <font color='#009900'>/* NULL if not processing a marker */</font>
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> bytes_read; <font color='#009900'>/* data bytes read so far in marker */</font>
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<font color='#009900'>/* Note: cur_marker is not linked into marker_list until it's all read. */</font>
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<b>}</b> my_marker_reader;
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<font color='#0000FF'>typedef</font> my_marker_reader <font color='#5555FF'>*</font> my_marker_ptr;
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<font color='#009900'>/*
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* Macros for fetching data from the data source module.
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*
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* At all times, cinfo->src->next_input_byte and ->bytes_in_buffer reflect
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* the current restart point; we update them only when we have reached a
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* suitable place to restart if a suspension occurs.
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*/</font>
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<font color='#009900'>/* Declare and initialize local copies of input pointer/count */</font>
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<font color='#0000FF'>#define</font> INPUT_VARS<font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font> \
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<font color='#0000FF'>struct</font> jpeg_source_mgr <font color='#5555FF'>*</font> datasrc <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>src; \
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<font color='#0000FF'>const</font> JOCTET <font color='#5555FF'>*</font> next_input_byte <font color='#5555FF'>=</font> datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_input_byte; \
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<font color='#0000FF'><u>size_t</u></font> bytes_in_buffer <font color='#5555FF'>=</font> datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_in_buffer
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<font color='#009900'>/* Unload the local copies --- do this only at a restart boundary */</font>
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<font color='#0000FF'>#define</font> INPUT_SYNC<font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font> \
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<font face='Lucida Console'>(</font> datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_input_byte <font color='#5555FF'>=</font> next_input_byte, \
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datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_in_buffer <font color='#5555FF'>=</font> bytes_in_buffer <font face='Lucida Console'>)</font>
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<font color='#009900'>/* Reload the local copies --- used only in MAKE_BYTE_AVAIL */</font>
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<font color='#0000FF'>#define</font> INPUT_RELOAD<font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font> \
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<font face='Lucida Console'>(</font> next_input_byte <font color='#5555FF'>=</font> datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_input_byte, \
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bytes_in_buffer <font color='#5555FF'>=</font> datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_in_buffer <font face='Lucida Console'>)</font>
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<font color='#009900'>/* Internal macro for INPUT_BYTE and INPUT_2BYTES: make a byte available.
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* Note we do *not* do INPUT_SYNC before calling fill_input_buffer,
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* but we must reload the local copies after a successful fill.
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*/</font>
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<font color='#0000FF'>#define</font> MAKE_BYTE_AVAIL<font face='Lucida Console'>(</font>cinfo,action<font face='Lucida Console'>)</font> \
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>bytes_in_buffer <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b> \
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font>datasrc<font color='#5555FF'>-</font><font color='#5555FF'>></font>fill_input_buffer<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> \
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<b>{</b> action; <b>}</b> \
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<font color='#BB00BB'>INPUT_RELOAD</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>; \
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<b>}</b>
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<font color='#009900'>/* Read a byte into variable V.
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* If must suspend, take the specified action (typically "return FALSE").
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*/</font>
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<font color='#0000FF'>#define</font> INPUT_BYTE<font face='Lucida Console'>(</font>cinfo,V,action<font face='Lucida Console'>)</font> \
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<b><a name='MAKESTMT'></a>MAKESTMT</b><font face='Lucida Console'>(</font> <font color='#BB00BB'>MAKE_BYTE_AVAIL</font><font face='Lucida Console'>(</font>cinfo,action<font face='Lucida Console'>)</font>; \
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bytes_in_buffer<font color='#5555FF'>-</font><font color='#5555FF'>-</font>; \
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V <font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>next_input_byte<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>; <font face='Lucida Console'>)</font>
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<font color='#009900'>/* As above, but read two bytes interpreted as an unsigned 16-bit integer.
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* V should be declared unsigned int or perhaps INT32.
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*/</font>
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<font color='#0000FF'>#define</font> INPUT_2BYTES<font face='Lucida Console'>(</font>cinfo,V,action<font face='Lucida Console'>)</font> \
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<b><a name='MAKESTMT'></a>MAKESTMT</b><font face='Lucida Console'>(</font> <font color='#BB00BB'>MAKE_BYTE_AVAIL</font><font face='Lucida Console'>(</font>cinfo,action<font face='Lucida Console'>)</font>; \
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bytes_in_buffer<font color='#5555FF'>-</font><font color='#5555FF'>-</font>; \
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V <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>next_input_byte<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font>; \
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<font color='#BB00BB'>MAKE_BYTE_AVAIL</font><font face='Lucida Console'>(</font>cinfo,action<font face='Lucida Console'>)</font>; \
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bytes_in_buffer<font color='#5555FF'>-</font><font color='#5555FF'>-</font>; \
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V <font color='#5555FF'>+</font><font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>next_input_byte<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>; <font face='Lucida Console'>)</font>
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<font color='#009900'>/*
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* Routines to process JPEG markers.
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*
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* Entry condition: JPEG marker itself has been read and its code saved
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* in cinfo->unread_marker; input restart point is just after the marker.
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*
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* Exit: if return TRUE, have read and processed any parameters, and have
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* updated the restart point to point after the parameters.
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* If return FALSE, was forced to suspend before reaching end of
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* marker parameters; restart point has not been moved. Same routine
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* will be called again after application supplies more input data.
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*
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* This approach to suspension assumes that all of a marker's parameters
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* can fit into a single input bufferload. This should hold for "normal"
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* markers. Some COM/APPn markers might have large parameter segments
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* that might not fit. If we are simply dropping such a marker, we use
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* skip_input_data to get past it, and thereby put the problem on the
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* source manager's shoulders. If we are saving the marker's contents
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* into memory, we use a slightly different convention: when forced to
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* suspend, the marker processor updates the restart point to the end of
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* what it's consumed (ie, the end of the buffer) before returning FALSE.
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* On resumption, cinfo->unread_marker still contains the marker code,
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* but the data source will point to the next chunk of marker data.
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* The marker processor must retain internal state to deal with this.
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*
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* Note that we don't bother to avoid duplicate trace messages if a
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* suspension occurs within marker parameters. Other side effects
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* require more care.
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*/</font>
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<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
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<b><a name='get_soi'></a>get_soi</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Process an SOI marker */</font>
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<b>{</b>
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<font color='#0000FF'><u>int</u></font> i;
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<font color='#BB00BB'>TRACEMS</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOI<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOI<font face='Lucida Console'>)</font>
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<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_SOI_DUPLICATE<font face='Lucida Console'>)</font>;
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<font color='#009900'>/* Reset all parameters that are defined to be reset by SOI */</font>
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<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> NUM_ARITH_TBLS; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_L[i] <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_U[i] <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_ac_K[i] <font color='#5555FF'>=</font> <font color='#979000'>5</font>;
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<b>}</b>
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>restart_interval <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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<font color='#009900'>/* Set initial assumptions for colorspace etc */</font>
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>jpeg_color_space <font color='#5555FF'>=</font> JCS_UNKNOWN;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>CCIR601_sampling <font color='#5555FF'>=</font> FALSE; <font color='#009900'>/* Assume non-CCIR sampling??? */</font>
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_JFIF_marker <font color='#5555FF'>=</font> FALSE;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version <font color='#5555FF'>=</font> <font color='#979000'>1</font>; <font color='#009900'>/* set default JFIF APP0 values */</font>
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_minor_version <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>density_unit <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>X_density <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Y_density <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_Adobe_marker <font color='#5555FF'>=</font> FALSE;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Adobe_transform <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOI <font color='#5555FF'>=</font> TRUE;
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<font color='#0000FF'>return</font> TRUE;
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<b>}</b>
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<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
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<b><a name='get_sof'></a>get_sof</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
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boolean is_arith<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Process a SOFn marker */</font>
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<b>{</b>
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INT32 length;
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<font color='#0000FF'><u>int</u></font> c, ci;
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jpeg_component_info <font color='#5555FF'>*</font> compptr;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>is_baseline <font color='#5555FF'>=</font> is_baseline;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>progressive_mode <font color='#5555FF'>=</font> is_prog;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_code <font color='#5555FF'>=</font> is_arith;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>data_precision, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_height, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_width, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>8</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS4</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOF, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker,
|
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_width, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_height,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOF<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_SOF_DUPLICATE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#009900'>/* We don't support files in which the image height is initially specified */</font>
|
|
<font color='#009900'>/* as 0 and is later redefined by DNL. As long as we have to check that, */</font>
|
|
<font color='#009900'>/* might as well have a general sanity check. */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_height <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font color='#979000'>0</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>image_width <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font color='#979000'>0</font>
|
|
<font color='#5555FF'>|</font><font color='#5555FF'>|</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_EMPTY_IMAGE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components <font color='#5555FF'>*</font> <font color='#979000'>3</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comp_info <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font> <font color='#009900'>/* do only once, even if suspend */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comp_info <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>jpeg_component_info <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>mem<font color='#5555FF'>-</font><font color='#5555FF'>></font>alloc_small<font face='Lucida Console'>)</font>
|
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>j_common_ptr<font face='Lucida Console'>)</font> cinfo, JPOOL_IMAGE,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components <font color='#5555FF'>*</font> <font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font>jpeg_component_info<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>ci <font color='#5555FF'>=</font> <font color='#979000'>0</font>, compptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comp_info; ci <font color='#5555FF'><</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components;
|
|
ci<font color='#5555FF'>+</font><font color='#5555FF'>+</font>, compptr<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_index <font color='#5555FF'>=</font> ci;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_id, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>h_samp_factor <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>v_samp_factor <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_no, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS4</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOF_COMPONENT,
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_id, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>h_samp_factor,
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>v_samp_factor, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_no<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOF <font color='#5555FF'>=</font> TRUE;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='get_sos'></a>get_sos</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Process a SOS marker */</font>
|
|
<b>{</b>
|
|
INT32 length;
|
|
<font color='#0000FF'><u>int</u></font> i, ci, n, c, cc;
|
|
jpeg_component_info <font color='#5555FF'>*</font> compptr;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOF<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_SOS_NO_SOF<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, n, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>; <font color='#009900'>/* Number of components */</font>
|
|
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOS, n<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>n <font color='#5555FF'>*</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>6</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> n <font color='#5555FF'>></font> MAX_COMPS_IN_SCAN <font color='#5555FF'>|</font><font color='#5555FF'>|</font>
|
|
<font face='Lucida Console'>(</font>n <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>progressive_mode<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* pseudo SOS marker only allowed in progressive mode */</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan <font color='#5555FF'>=</font> n;
|
|
|
|
<font color='#009900'>/* Collect the component-spec parameters */</font>
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> n; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, cc, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>ci <font color='#5555FF'>=</font> <font color='#979000'>0</font>, compptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comp_info; ci <font color='#5555FF'><</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components;
|
|
ci<font color='#5555FF'>+</font><font color='#5555FF'>+</font>, compptr<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cc <font color='#5555FF'>=</font><font color='#5555FF'>=</font> compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_id<font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>goto</font> id_found;
|
|
<b>}</b>
|
|
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_COMPONENT_ID, cc<font face='Lucida Console'>)</font>;
|
|
|
|
id_found:
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_comp_info[i] <font color='#5555FF'>=</font> compptr;
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS3</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOS_COMPONENT, cc,
|
|
compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#009900'>/* Collect the additional scan parameters Ss, Se, Ah/Al. */</font>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss <font color='#5555FF'>=</font> c;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se <font color='#5555FF'>=</font> c;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ah <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Al <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>c <font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>15</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS4</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_SOS_PARAMS, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ah, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Al<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#009900'>/* Prepare to scan data & restart markers */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
|
|
<font color='#009900'>/* Count another (non-pseudo) SOS marker */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>n<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>input_scan_number<font color='#5555FF'>+</font><font color='#5555FF'>+</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#0000FF'>#ifdef</font> D_ARITH_CODING_SUPPORTED
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='get_dac'></a>get_dac</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Process a DAC marker */</font>
|
|
<b>{</b>
|
|
INT32 length;
|
|
<font color='#0000FF'><u>int</u></font> index, val;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
|
|
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, index, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, val, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_DAC, index, val<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>index <font color='#5555FF'><</font> <font color='#979000'>0</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> index <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#979000'>2</font><font color='#5555FF'>*</font>NUM_ARITH_TBLS<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_DAC_INDEX, index<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>index <font color='#5555FF'>></font><font color='#5555FF'>=</font> NUM_ARITH_TBLS<font face='Lucida Console'>)</font> <b>{</b> <font color='#009900'>/* define AC table */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_ac_K[index<font color='#5555FF'>-</font>NUM_ARITH_TBLS] <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT8<font face='Lucida Console'>)</font> val;
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b> <font color='#009900'>/* define DC table */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_L[index] <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT8<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>val <font color='#5555FF'>&</font> <font color='#979000'>0x0F</font><font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_U[index] <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT8<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>val <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>4</font><font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_L[index] <font color='#5555FF'>></font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_U[index]<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_DAC_VALUE, val<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>#else</font> <font color='#009900'>/* ! D_ARITH_CODING_SUPPORTED */</font>
|
|
|
|
<font color='#0000FF'>#define</font> get_dac<font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font> skip_variable<font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>
|
|
|
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* D_ARITH_CODING_SUPPORTED */</font>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='get_dht'></a>get_dht</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Process a DHT marker */</font>
|
|
<b>{</b>
|
|
INT32 length;
|
|
UINT8 bits[<font color='#979000'>17</font>];
|
|
UINT8 huffval[<font color='#979000'>256</font>];
|
|
<font color='#0000FF'><u>int</u></font> i, index, count;
|
|
JHUFF_TBL <font color='#5555FF'>*</font><font color='#5555FF'>*</font>htblptr;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
|
|
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>16</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, index, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_DHT, index<font face='Lucida Console'>)</font>;
|
|
|
|
bits[<font color='#979000'>0</font>] <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
count <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>1</font>; i <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font color='#979000'>16</font>; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, bits[i], <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
count <font color='#5555FF'>+</font><font color='#5555FF'>=</font> bits[i];
|
|
<b>}</b>
|
|
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>16</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS8</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font>, JTRC_HUFFBITS,
|
|
bits[<font color='#979000'>1</font>], bits[<font color='#979000'>2</font>], bits[<font color='#979000'>3</font>], bits[<font color='#979000'>4</font>],
|
|
bits[<font color='#979000'>5</font>], bits[<font color='#979000'>6</font>], bits[<font color='#979000'>7</font>], bits[<font color='#979000'>8</font>]<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>TRACEMS8</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font>, JTRC_HUFFBITS,
|
|
bits[<font color='#979000'>9</font>], bits[<font color='#979000'>10</font>], bits[<font color='#979000'>11</font>], bits[<font color='#979000'>12</font>],
|
|
bits[<font color='#979000'>13</font>], bits[<font color='#979000'>14</font>], bits[<font color='#979000'>15</font>], bits[<font color='#979000'>16</font>]<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#009900'>/* Here we just do minimal validation of the counts to avoid walking
|
|
* off the end of our table space. jdhuff.c will check more carefully.
|
|
*/</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>count <font color='#5555FF'>></font> <font color='#979000'>256</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>INT32<font face='Lucida Console'>)</font> count<font face='Lucida Console'>)</font> <font color='#5555FF'>></font> length<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_HUFF_TABLE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> count; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, huffval[i], <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> count;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>index <font color='#5555FF'>&</font> <font color='#979000'>0x10</font><font face='Lucida Console'>)</font> <b>{</b> <font color='#009900'>/* AC table definition */</font>
|
|
index <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>0x10</font>;
|
|
htblptr <font color='#5555FF'>=</font> <font color='#5555FF'>&</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_huff_tbl_ptrs[index];
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b> <font color='#009900'>/* DC table definition */</font>
|
|
htblptr <font color='#5555FF'>=</font> <font color='#5555FF'>&</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_huff_tbl_ptrs[index];
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>index <font color='#5555FF'><</font> <font color='#979000'>0</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> index <font color='#5555FF'>></font><font color='#5555FF'>=</font> NUM_HUFF_TBLS<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_DHT_INDEX, index<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font>htblptr <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
|
|
<font color='#5555FF'>*</font>htblptr <font color='#5555FF'>=</font> <font color='#BB00BB'>jpeg_alloc_huff_table</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>j_common_ptr<font face='Lucida Console'>)</font> cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>MEMCOPY</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>htblptr<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>bits, bits, <font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>htblptr<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>bits<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>MEMCOPY</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>htblptr<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>huffval, huffval, <font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font>htblptr<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>huffval<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='get_dqt'></a>get_dqt</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Process a DQT marker */</font>
|
|
<b>{</b>
|
|
INT32 length, count, i;
|
|
<font color='#0000FF'><u>int</u></font> n, prec;
|
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> tmp;
|
|
JQUANT_TBL <font color='#5555FF'>*</font>quant_ptr;
|
|
<font color='#0000FF'>const</font> <font color='#0000FF'><u>int</u></font> <font color='#5555FF'>*</font>natural_order;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
|
|
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
length<font color='#5555FF'>-</font><font color='#5555FF'>-</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, n, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
prec <font color='#5555FF'>=</font> n <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>4</font>;
|
|
n <font color='#5555FF'>&</font><font color='#5555FF'>=</font> <font color='#979000'>0x0F</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_DQT, n, prec<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>n <font color='#5555FF'>></font><font color='#5555FF'>=</font> NUM_QUANT_TBLS<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_DQT_INDEX, n<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_ptrs[n] <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_ptrs[n] <font color='#5555FF'>=</font> <font color='#BB00BB'>jpeg_alloc_quant_table</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>j_common_ptr<font face='Lucida Console'>)</font> cinfo<font face='Lucida Console'>)</font>;
|
|
quant_ptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_ptrs[n];
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>prec<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'><</font> DCTSIZE2 <font color='#5555FF'>*</font> <font color='#979000'>2</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Initialize full table for safety. */</font>
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> DCTSIZE2; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i] <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
|
|
<b>}</b>
|
|
count <font color='#5555FF'>=</font> length <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>1</font>;
|
|
<b>}</b> <font color='#0000FF'>else</font>
|
|
count <font color='#5555FF'>=</font> DCTSIZE2;
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'><</font> DCTSIZE2<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Initialize full table for safety. */</font>
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> DCTSIZE2; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i] <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
|
|
<b>}</b>
|
|
count <font color='#5555FF'>=</font> length;
|
|
<b>}</b> <font color='#0000FF'>else</font>
|
|
count <font color='#5555FF'>=</font> DCTSIZE2;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>count<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>2</font><font color='#5555FF'>*</font><font color='#979000'>2</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order2; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>3</font><font color='#5555FF'>*</font><font color='#979000'>3</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order3; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>4</font><font color='#5555FF'>*</font><font color='#979000'>4</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order4; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>5</font><font color='#5555FF'>*</font><font color='#979000'>5</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order5; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>6</font><font color='#5555FF'>*</font><font color='#979000'>6</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order6; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font face='Lucida Console'>(</font><font color='#979000'>7</font><font color='#5555FF'>*</font><font color='#979000'>7</font><font face='Lucida Console'>)</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order7; <font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>default</font>: natural_order <font color='#5555FF'>=</font> jpeg_natural_order; <font color='#0000FF'>break</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> count; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>prec<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, tmp, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>else</font>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, tmp, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* We convert the zigzag-order table to natural array order. */</font>
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[natural_order[i]] <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT16<font face='Lucida Console'>)</font> tmp;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>err<font color='#5555FF'>-</font><font color='#5555FF'>></font>trace_level <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>2</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> DCTSIZE2; i <font color='#5555FF'>+</font><font color='#5555FF'>=</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>TRACEMS8</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font>, JTRC_QUANTVALS,
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i], quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>1</font>],
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>2</font>], quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>3</font>],
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>4</font>], quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>5</font>],
|
|
quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>6</font>], quant_ptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[i<font color='#5555FF'>+</font><font color='#979000'>7</font>]<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> count;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>prec<font face='Lucida Console'>)</font> length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> count;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='get_dri'></a>get_dri</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Process a DRI marker */</font>
|
|
<b>{</b>
|
|
INT32 length;
|
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> tmp;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>4</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, tmp, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_DRI, tmp<font face='Lucida Console'>)</font>;
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>restart_interval <font color='#5555FF'>=</font> tmp;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Routines for processing APPn and COM markers.
|
|
* These are either saved in memory or discarded, per application request.
|
|
* APP0 and APP14 are specially checked to see if they are
|
|
* JFIF and Adobe markers, respectively.
|
|
*/</font>
|
|
|
|
<font color='#0000FF'>#define</font> APP0_DATA_LEN <font color='#979000'>14</font> <font color='#009900'>/* Length of interesting data in APP0 */</font>
|
|
<font color='#0000FF'>#define</font> APP14_DATA_LEN <font color='#979000'>12</font> <font color='#009900'>/* Length of interesting data in APP14 */</font>
|
|
<font color='#0000FF'>#define</font> APPN_DATA_LEN <font color='#979000'>14</font> <font color='#009900'>/* Must be the largest of the above!! */</font>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='examine_app0'></a>examine_app0</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, JOCTET FAR <font color='#5555FF'>*</font> data,
|
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> datalen, INT32 remaining<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Examine first few bytes from an APP0.
|
|
* Take appropriate action if it is a JFIF marker.
|
|
* datalen is # of bytes at data[], remaining is length of rest of marker data.
|
|
*/</font>
|
|
<b>{</b>
|
|
INT32 totallen <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>INT32<font face='Lucida Console'>)</font> datalen <font color='#5555FF'>+</font> remaining;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>datalen <font color='#5555FF'>></font><font color='#5555FF'>=</font> APP0_DATA_LEN <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>0</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x4A</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>1</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x46</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>2</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x49</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>3</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x46</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>4</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Found JFIF APP0 marker: save info */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_JFIF_marker <font color='#5555FF'>=</font> TRUE;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version <font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>5</font>]<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_minor_version <font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>6</font>]<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>density_unit <font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>7</font>]<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>X_density <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>8</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>9</font>]<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Y_density <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>10</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>11</font>]<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* Check version.
|
|
* Major version must be 1, anything else signals an incompatible change.
|
|
* (We used to treat this as an error, but now it's a nonfatal warning,
|
|
* because some bozo at Hijaak couldn't read the spec.)
|
|
* Minor version should be 0..2, but process anyway if newer.
|
|
*/</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>WARNMS2</font><font face='Lucida Console'>(</font>cinfo, JWRN_JFIF_MAJOR,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_minor_version<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* Generate trace messages */</font>
|
|
<font color='#BB00BB'>TRACEMS5</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_JFIF,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_minor_version,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>X_density, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Y_density, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>density_unit<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* Validate thumbnail dimensions and issue appropriate messages */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>12</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>13</font>]<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_JFIF_THUMBNAIL,
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>12</font>]<font face='Lucida Console'>)</font>, <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>13</font>]<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
totallen <font color='#5555FF'>-</font><font color='#5555FF'>=</font> APP0_DATA_LEN;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>totallen <font color='#5555FF'>!</font><font color='#5555FF'>=</font>
|
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>INT32<font face='Lucida Console'>)</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>12</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font>INT32<font face='Lucida Console'>)</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>13</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font>INT32<font face='Lucida Console'>)</font> <font color='#979000'>3</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_JFIF_BADTHUMBNAILSIZE, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<b>}</b> <font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>datalen <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>6</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>0</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x4A</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>1</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x46</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>2</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x58</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>3</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x58</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>4</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Found JFIF "JFXX" extension APP0 marker */</font>
|
|
<font color='#009900'>/* The library doesn't actually do anything with these,
|
|
* but we try to produce a helpful trace message.
|
|
*/</font>
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>5</font>]<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>case</font> <font color='#979000'>0x10</font>:
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_THUMB_JPEG, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font color='#979000'>0x11</font>:
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_THUMB_PALETTE, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font color='#979000'>0x13</font>:
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_THUMB_RGB, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>default</font>:
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_JFIF_EXTENSION,
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>5</font>]<font face='Lucida Console'>)</font>, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<b>}</b>
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#009900'>/* Start of APP0 does not match "JFIF" or "JFXX", or too short */</font>
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_APP0, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> totallen<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='examine_app14'></a>examine_app14</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, JOCTET FAR <font color='#5555FF'>*</font> data,
|
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> datalen, INT32 remaining<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Examine first few bytes from an APP14.
|
|
* Take appropriate action if it is an Adobe marker.
|
|
* datalen is # of bytes at data[], remaining is length of rest of marker data.
|
|
*/</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> version, flags0, flags1, transform;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>datalen <font color='#5555FF'>></font><font color='#5555FF'>=</font> APP14_DATA_LEN <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>0</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x41</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>1</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x64</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>2</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x6F</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>3</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x62</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font>
|
|
<font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>4</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0x65</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Found Adobe APP14 marker */</font>
|
|
version <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>5</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>6</font>]<font face='Lucida Console'>)</font>;
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flags0 <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>7</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>8</font>]<font face='Lucida Console'>)</font>;
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flags1 <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>9</font>]<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>10</font>]<font face='Lucida Console'>)</font>;
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transform <font color='#5555FF'>=</font> <font color='#BB00BB'>GETJOCTET</font><font face='Lucida Console'>(</font>data[<font color='#979000'>11</font>]<font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>TRACEMS4</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_ADOBE, version, flags0, flags1, transform<font face='Lucida Console'>)</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_Adobe_marker <font color='#5555FF'>=</font> TRUE;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Adobe_transform <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT8<font face='Lucida Console'>)</font> transform;
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<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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<font color='#009900'>/* Start of APP14 does not match "Adobe", or too short */</font>
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<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_APP14, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>datalen <font color='#5555FF'>+</font> remaining<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
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<b>}</b>
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<b>}</b>
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<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
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<b><a name='get_interesting_appn'></a>get_interesting_appn</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Process an APP0 or APP14 marker without saving it */</font>
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<b>{</b>
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INT32 length;
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JOCTET b[APPN_DATA_LEN];
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> i, numtoread;
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<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
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length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
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<font color='#009900'>/* get the interesting part of the marker data */</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font><font color='#5555FF'>=</font> APPN_DATA_LEN<font face='Lucida Console'>)</font>
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numtoread <font color='#5555FF'>=</font> APPN_DATA_LEN;
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<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
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numtoread <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> length;
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<font color='#0000FF'>else</font>
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numtoread <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> numtoread; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>
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<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, b[i], <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
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length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> numtoread;
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<font color='#009900'>/* process it */</font>
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<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#0000FF'>case</font> M_APP0:
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<font color='#BB00BB'>examine_app0</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>JOCTET FAR <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> b, numtoread, length<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>break</font>;
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<font color='#0000FF'>case</font> M_APP14:
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<font color='#BB00BB'>examine_app14</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>JOCTET FAR <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> b, numtoread, length<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>break</font>;
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<font color='#0000FF'>default</font>:
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<font color='#009900'>/* can't get here unless jpeg_save_markers chooses wrong processor */</font>
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<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_UNKNOWN_MARKER, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>break</font>;
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<b>}</b>
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<font color='#009900'>/* skip any remaining data -- could be lots */</font>
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<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
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<font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>src<font color='#5555FF'>-</font><font color='#5555FF'>></font>skip_input_data<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> length<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>return</font> TRUE;
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<b>}</b>
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<font color='#0000FF'>#ifdef</font> SAVE_MARKERS_SUPPORTED
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<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
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<b><a name='save_marker'></a>save_marker</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Save an APPn or COM marker into the marker list */</font>
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<b>{</b>
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my_marker_ptr marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker;
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jpeg_saved_marker_ptr cur_marker <font color='#5555FF'>=</font> marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_marker;
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> bytes_read, data_length;
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JOCTET FAR <font color='#5555FF'>*</font> data;
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INT32 length <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cur_marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#009900'>/* begin reading a marker */</font>
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<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
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length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b> <font color='#009900'>/* watch out for bogus length word */</font>
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<font color='#009900'>/* figure out how much we want to save */</font>
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> limit;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_COM<font face='Lucida Console'>)</font>
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limit <font color='#5555FF'>=</font> marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_COM;
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<font color='#0000FF'>else</font>
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limit <font color='#5555FF'>=</font> marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_APPn[cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0];
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> length <font color='#5555FF'><</font> limit<font face='Lucida Console'>)</font>
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limit <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> length;
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<font color='#009900'>/* allocate and initialize the marker item */</font>
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cur_marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>jpeg_saved_marker_ptr<font face='Lucida Console'>)</font>
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<font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>mem<font color='#5555FF'>-</font><font color='#5555FF'>></font>alloc_large<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>j_common_ptr<font face='Lucida Console'>)</font> cinfo, JPOOL_IMAGE,
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<font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font><font color='#0000FF'>struct</font> <b><a name='jpeg_marker_struct'></a>jpeg_marker_struct</b><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> limit<font face='Lucida Console'>)</font>;
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cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next <font color='#5555FF'>=</font> NULL;
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cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>UINT8<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker;
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cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>original_length <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> length;
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cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>data_length <font color='#5555FF'>=</font> limit;
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<font color='#009900'>/* data area is just beyond the jpeg_marker_struct */</font>
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data <font color='#5555FF'>=</font> cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>data <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>JOCTET FAR <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cur_marker <font color='#5555FF'>+</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_marker <font color='#5555FF'>=</font> cur_marker;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_read <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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bytes_read <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
data_length <font color='#5555FF'>=</font> limit;
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<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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<font color='#009900'>/* deal with bogus length word */</font>
|
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bytes_read <font color='#5555FF'>=</font> data_length <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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data <font color='#5555FF'>=</font> NULL;
|
|
<b>}</b>
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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<font color='#009900'>/* resume reading a marker */</font>
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bytes_read <font color='#5555FF'>=</font> marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_read;
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data_length <font color='#5555FF'>=</font> cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>data_length;
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data <font color='#5555FF'>=</font> cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>data <font color='#5555FF'>+</font> bytes_read;
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<b>}</b>
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<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>bytes_read <font color='#5555FF'><</font> data_length<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>; <font color='#009900'>/* move the restart point to here */</font>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>bytes_read <font color='#5555FF'>=</font> bytes_read;
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<font color='#009900'>/* If there's not at least one byte in buffer, suspend */</font>
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<font color='#BB00BB'>MAKE_BYTE_AVAIL</font><font face='Lucida Console'>(</font>cinfo, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
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<font color='#009900'>/* Copy bytes with reasonable rapidity */</font>
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<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>bytes_read <font color='#5555FF'><</font> data_length <font color='#5555FF'>&</font><font color='#5555FF'>&</font> bytes_in_buffer <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
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<font color='#5555FF'>*</font>data<font color='#5555FF'>+</font><font color='#5555FF'>+</font> <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>next_input_byte<font color='#5555FF'>+</font><font color='#5555FF'>+</font>;
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bytes_in_buffer<font color='#5555FF'>-</font><font color='#5555FF'>-</font>;
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bytes_read<font color='#5555FF'>+</font><font color='#5555FF'>+</font>;
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<b>}</b>
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<b>}</b>
|
|
|
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<font color='#009900'>/* Done reading what we want to read */</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cur_marker <font color='#5555FF'>!</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font> <b>{</b> <font color='#009900'>/* will be NULL if bogus length word */</font>
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|
<font color='#009900'>/* Add new marker to end of list */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker_list <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font> <b>{</b>
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|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker_list <font color='#5555FF'>=</font> cur_marker;
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|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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|
jpeg_saved_marker_ptr prev <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker_list;
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|
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>prev<font color='#5555FF'>-</font><font color='#5555FF'>></font>next <font color='#5555FF'>!</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
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prev <font color='#5555FF'>=</font> prev<font color='#5555FF'>-</font><font color='#5555FF'>></font>next;
|
|
prev<font color='#5555FF'>-</font><font color='#5555FF'>></font>next <font color='#5555FF'>=</font> cur_marker;
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|
<b>}</b>
|
|
<font color='#009900'>/* Reset pointer & calc remaining data length */</font>
|
|
data <font color='#5555FF'>=</font> cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>data;
|
|
length <font color='#5555FF'>=</font> cur_marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>original_length <font color='#5555FF'>-</font> data_length;
|
|
<b>}</b>
|
|
<font color='#009900'>/* Reset to initial state for next marker */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_marker <font color='#5555FF'>=</font> NULL;
|
|
|
|
<font color='#009900'>/* Process the marker if interesting; else just make a generic trace msg */</font>
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font> <b>{</b>
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|
<font color='#0000FF'>case</font> M_APP0:
|
|
<font color='#BB00BB'>examine_app0</font><font face='Lucida Console'>(</font>cinfo, data, data_length, length<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> M_APP14:
|
|
<font color='#BB00BB'>examine_app14</font><font face='Lucida Console'>(</font>cinfo, data, data_length, length<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>default</font>:
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_MISC_MARKER, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker,
|
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>data_length <font color='#5555FF'>+</font> length<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#009900'>/* skip any remaining data -- could be lots */</font>
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>; <font color='#009900'>/* do before skip_input_data */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>src<font color='#5555FF'>-</font><font color='#5555FF'>></font>skip_input_data<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> length<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* SAVE_MARKERS_SUPPORTED */</font>
|
|
|
|
|
|
<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='skip_variable'></a>skip_variable</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Skip over an unknown or uninteresting variable-length marker */</font>
|
|
<b>{</b>
|
|
INT32 length;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_2BYTES</font><font face='Lucida Console'>(</font>cinfo, length, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
length <font color='#5555FF'>-</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_MISC_MARKER, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> length<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>; <font color='#009900'>/* do before skip_input_data */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>src<font color='#5555FF'>-</font><font color='#5555FF'>></font>skip_input_data<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> length<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Find the next JPEG marker, save it in cinfo->unread_marker.
|
|
* Returns FALSE if had to suspend before reaching a marker;
|
|
* in that case cinfo->unread_marker is unchanged.
|
|
*
|
|
* Note that the result might not be a valid marker code,
|
|
* but it will never be 0 or FF.
|
|
*/</font>
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='next_marker'></a>next_marker</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> c;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>;;<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* Skip any non-FF bytes.
|
|
* This may look a bit inefficient, but it will not occur in a valid file.
|
|
* We sync after each discarded byte so that a suspending data source
|
|
* can discard the byte from its buffer.
|
|
*/</font>
|
|
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>discarded_bytes<font color='#5555FF'>+</font><font color='#5555FF'>+</font>;
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<font color='#009900'>/* This loop swallows any duplicate FF bytes. Extra FFs are legal as
|
|
* pad bytes, so don't count them in discarded_bytes. We assume there
|
|
* will not be so many consecutive FF bytes as to overflow a suspending
|
|
* data source's input buffer.
|
|
*/</font>
|
|
<font color='#0000FF'>do</font> <b>{</b>
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<b>}</b> <font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>break</font>; <font color='#009900'>/* found a valid marker, exit loop */</font>
|
|
<font color='#009900'>/* Reach here if we found a stuffed-zero data sequence (FF/00).
|
|
* Discard it and loop back to try again.
|
|
*/</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>discarded_bytes <font color='#5555FF'>+</font><font color='#5555FF'>=</font> <font color='#979000'>2</font>;
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>discarded_bytes <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>WARNMS2</font><font face='Lucida Console'>(</font>cinfo, JWRN_EXTRANEOUS_DATA, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>discarded_bytes, c<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>discarded_bytes <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<b>}</b>
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> c;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='first_marker'></a>first_marker</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Like next_marker, but used to obtain the initial SOI marker. */</font>
|
|
<font color='#009900'>/* For this marker, we do not allow preceding garbage or fill; otherwise,
|
|
* we might well scan an entire input file before realizing it ain't JPEG.
|
|
* If an application wants to process non-JFIF files, it must seek to the
|
|
* SOI before calling the JPEG library.
|
|
*/</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> c, c2;
|
|
<font color='#BB00BB'>INPUT_VARS</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>INPUT_BYTE</font><font face='Lucida Console'>(</font>cinfo, c2, <font color='#0000FF'>return</font> FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>c <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0xFF</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> c2 <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_SOI<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT2</font><font face='Lucida Console'>(</font>cinfo, JERR_NO_SOI, c, c2<font face='Lucida Console'>)</font>;
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> c2;
|
|
|
|
<font color='#BB00BB'>INPUT_SYNC</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Read markers until SOS or EOI.
|
|
*
|
|
* Returns same codes as are defined for jpeg_consume_input:
|
|
* JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
|
|
*
|
|
* Note: This function may return a pseudo SOS marker (with zero
|
|
* component number) for treat by input controller's consume_input.
|
|
* consume_input itself should filter out (skip) the pseudo marker
|
|
* after processing for the caller.
|
|
*/</font>
|
|
|
|
<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='read_markers'></a>read_markers</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#009900'>/* Outer loop repeats once for each marker. */</font>
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>;;<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Collect the marker proper, unless we already did. */</font>
|
|
<font color='#009900'>/* NB: first_marker() enforces the requirement that SOI appear first. */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>saw_SOI<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>first_marker</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>next_marker</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
<font color='#009900'>/* At this point cinfo->unread_marker contains the marker code and the
|
|
* input point is just past the marker proper, but before any parameters.
|
|
* A suspension will cause us to return with this state still true.
|
|
*/</font>
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>case</font> M_SOI:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_soi</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOF0: <font color='#009900'>/* Baseline */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sof</font><font face='Lucida Console'>(</font>cinfo, TRUE, FALSE, FALSE<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOF1: <font color='#009900'>/* Extended sequential, Huffman */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sof</font><font face='Lucida Console'>(</font>cinfo, FALSE, FALSE, FALSE<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOF2: <font color='#009900'>/* Progressive, Huffman */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sof</font><font face='Lucida Console'>(</font>cinfo, FALSE, TRUE, FALSE<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOF9: <font color='#009900'>/* Extended sequential, arithmetic */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sof</font><font face='Lucida Console'>(</font>cinfo, FALSE, FALSE, TRUE<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOF10: <font color='#009900'>/* Progressive, arithmetic */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sof</font><font face='Lucida Console'>(</font>cinfo, FALSE, TRUE, TRUE<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#009900'>/* Currently unsupported SOFn types */</font>
|
|
<font color='#0000FF'>case</font> M_SOF3: <font color='#009900'>/* Lossless, Huffman */</font>
|
|
<font color='#0000FF'>case</font> M_SOF5: <font color='#009900'>/* Differential sequential, Huffman */</font>
|
|
<font color='#0000FF'>case</font> M_SOF6: <font color='#009900'>/* Differential progressive, Huffman */</font>
|
|
<font color='#0000FF'>case</font> M_SOF7: <font color='#009900'>/* Differential lossless, Huffman */</font>
|
|
<font color='#0000FF'>case</font> M_JPG: <font color='#009900'>/* Reserved for JPEG extensions */</font>
|
|
<font color='#0000FF'>case</font> M_SOF11: <font color='#009900'>/* Lossless, arithmetic */</font>
|
|
<font color='#0000FF'>case</font> M_SOF13: <font color='#009900'>/* Differential sequential, arithmetic */</font>
|
|
<font color='#0000FF'>case</font> M_SOF14: <font color='#009900'>/* Differential progressive, arithmetic */</font>
|
|
<font color='#0000FF'>case</font> M_SOF15: <font color='#009900'>/* Differential lossless, arithmetic */</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_SOF_UNSUPPORTED, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_SOS:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_sos</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>; <font color='#009900'>/* processed the marker */</font>
|
|
<font color='#0000FF'>return</font> JPEG_REACHED_SOS;
|
|
|
|
<font color='#0000FF'>case</font> M_EOI:
|
|
<font color='#BB00BB'>TRACEMS</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_EOI<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>; <font color='#009900'>/* processed the marker */</font>
|
|
<font color='#0000FF'>return</font> JPEG_REACHED_EOI;
|
|
|
|
<font color='#0000FF'>case</font> M_DAC:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_dac</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_DHT:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_dht</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_DQT:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_dqt</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_DRI:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>get_dri</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_APP0:
|
|
<font color='#0000FF'>case</font> M_APP1:
|
|
<font color='#0000FF'>case</font> M_APP2:
|
|
<font color='#0000FF'>case</font> M_APP3:
|
|
<font color='#0000FF'>case</font> M_APP4:
|
|
<font color='#0000FF'>case</font> M_APP5:
|
|
<font color='#0000FF'>case</font> M_APP6:
|
|
<font color='#0000FF'>case</font> M_APP7:
|
|
<font color='#0000FF'>case</font> M_APP8:
|
|
<font color='#0000FF'>case</font> M_APP9:
|
|
<font color='#0000FF'>case</font> M_APP10:
|
|
<font color='#0000FF'>case</font> M_APP11:
|
|
<font color='#0000FF'>case</font> M_APP12:
|
|
<font color='#0000FF'>case</font> M_APP13:
|
|
<font color='#0000FF'>case</font> M_APP14:
|
|
<font color='#0000FF'>case</font> M_APP15:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0]<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_COM:
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>process_COM<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_RST0: <font color='#009900'>/* these are all parameterless */</font>
|
|
<font color='#0000FF'>case</font> M_RST1:
|
|
<font color='#0000FF'>case</font> M_RST2:
|
|
<font color='#0000FF'>case</font> M_RST3:
|
|
<font color='#0000FF'>case</font> M_RST4:
|
|
<font color='#0000FF'>case</font> M_RST5:
|
|
<font color='#0000FF'>case</font> M_RST6:
|
|
<font color='#0000FF'>case</font> M_RST7:
|
|
<font color='#0000FF'>case</font> M_TEM:
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font>, JTRC_PARMLESS_MARKER, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>case</font> M_DNL: <font color='#009900'>/* Ignore DNL ... perhaps the wrong thing */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>skip_variable</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> JPEG_SUSPENDED;
|
|
<font color='#0000FF'>break</font>;
|
|
|
|
<font color='#0000FF'>default</font>: <font color='#009900'>/* must be DHP, EXP, JPGn, or RESn */</font>
|
|
<font color='#009900'>/* For now, we treat the reserved markers as fatal errors since they are
|
|
* likely to be used to signal incompatible JPEG Part 3 extensions.
|
|
* Once the JPEG 3 version-number marker is well defined, this code
|
|
* ought to change!
|
|
*/</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_UNKNOWN_MARKER, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>break</font>;
|
|
<b>}</b>
|
|
<font color='#009900'>/* Successfully processed marker, so reset state variable */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<b>}</b> <font color='#009900'>/* end loop */</font>
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Read a restart marker, which is expected to appear next in the datastream;
|
|
* if the marker is not there, take appropriate recovery action.
|
|
* Returns FALSE if suspension is required.
|
|
*
|
|
* This is called by the entropy decoder after it has read an appropriate
|
|
* number of MCUs. cinfo->unread_marker may be nonzero if the entropy decoder
|
|
* has already read a marker from the data source. Under normal conditions
|
|
* cinfo->unread_marker will be reset to 0 before returning; if not reset,
|
|
* it holds a marker which the decoder will be unable to read past.
|
|
*/</font>
|
|
|
|
<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='read_restart_marker'></a>read_restart_marker</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#009900'>/* Obtain a marker unless we already did. */</font>
|
|
<font color='#009900'>/* Note that next_marker will complain if it skips any data. */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>next_marker</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> FALSE;
|
|
<b>}</b>
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font>
|
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>+</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#009900'>/* Normal case --- swallow the marker and let entropy decoder continue */</font>
|
|
<font color='#BB00BB'>TRACEMS1</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>3</font>, JTRC_RST, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num<font face='Lucida Console'>)</font>;
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#009900'>/* Uh-oh, the restart markers have been messed up. */</font>
|
|
<font color='#009900'>/* Let the data source manager determine how to resync. */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>src<font color='#5555FF'>-</font><font color='#5555FF'>></font>resync_to_restart<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>cinfo,
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> FALSE;
|
|
<b>}</b>
|
|
|
|
<font color='#009900'>/* Update next-restart state */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_restart_num <font color='#5555FF'>+</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>7</font>;
|
|
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* This is the default resync_to_restart method for data source managers
|
|
* to use if they don't have any better approach. Some data source managers
|
|
* may be able to back up, or may have additional knowledge about the data
|
|
* which permits a more intelligent recovery strategy; such managers would
|
|
* presumably supply their own resync method.
|
|
*
|
|
* read_restart_marker calls resync_to_restart if it finds a marker other than
|
|
* the restart marker it was expecting. (This code is *not* used unless
|
|
* a nonzero restart interval has been declared.) cinfo->unread_marker is
|
|
* the marker code actually found (might be anything, except 0 or FF).
|
|
* The desired restart marker number (0..7) is passed as a parameter.
|
|
* This routine is supposed to apply whatever error recovery strategy seems
|
|
* appropriate in order to position the input stream to the next data segment.
|
|
* Note that cinfo->unread_marker is treated as a marker appearing before
|
|
* the current data-source input point; usually it should be reset to zero
|
|
* before returning.
|
|
* Returns FALSE if suspension is required.
|
|
*
|
|
* This implementation is substantially constrained by wanting to treat the
|
|
* input as a data stream; this means we can't back up. Therefore, we have
|
|
* only the following actions to work with:
|
|
* 1. Simply discard the marker and let the entropy decoder resume at next
|
|
* byte of file.
|
|
* 2. Read forward until we find another marker, discarding intervening
|
|
* data. (In theory we could look ahead within the current bufferload,
|
|
* without having to discard data if we don't find the desired marker.
|
|
* This idea is not implemented here, in part because it makes behavior
|
|
* dependent on buffer size and chance buffer-boundary positions.)
|
|
* 3. Leave the marker unread (by failing to zero cinfo->unread_marker).
|
|
* This will cause the entropy decoder to process an empty data segment,
|
|
* inserting dummy zeroes, and then we will reprocess the marker.
|
|
*
|
|
* #2 is appropriate if we think the desired marker lies ahead, while #3 is
|
|
* appropriate if the found marker is a future restart marker (indicating
|
|
* that we have missed the desired restart marker, probably because it got
|
|
* corrupted).
|
|
* We apply #2 or #3 if the found marker is a restart marker no more than
|
|
* two counts behind or ahead of the expected one. We also apply #2 if the
|
|
* found marker is not a legal JPEG marker code (it's certainly bogus data).
|
|
* If the found marker is a restart marker more than 2 counts away, we do #1
|
|
* (too much risk that the marker is erroneous; with luck we will be able to
|
|
* resync at some future point).
|
|
* For any valid non-restart JPEG marker, we apply #3. This keeps us from
|
|
* overrunning the end of a scan. An implementation limited to single-scan
|
|
* files might find it better to apply #2 for markers other than EOI, since
|
|
* any other marker would have to be bogus data in that case.
|
|
*/</font>
|
|
|
|
<b><a name='GLOBAL'></a>GLOBAL</b><font face='Lucida Console'>(</font>boolean<font face='Lucida Console'>)</font>
|
|
<b><a name='jpeg_resync_to_restart'></a>jpeg_resync_to_restart</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, <font color='#0000FF'><u>int</u></font> desired<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> marker <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker;
|
|
<font color='#0000FF'><u>int</u></font> action <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
|
|
|
|
<font color='#009900'>/* Always put up a warning. */</font>
|
|
<font color='#BB00BB'>WARNMS2</font><font face='Lucida Console'>(</font>cinfo, JWRN_MUST_RESYNC, marker, desired<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#009900'>/* Outer loop handles repeated decision after scanning forward. */</font>
|
|
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>;;<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker <font color='#5555FF'><</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_SOF0<font face='Lucida Console'>)</font>
|
|
action <font color='#5555FF'>=</font> <font color='#979000'>2</font>; <font color='#009900'>/* invalid marker */</font>
|
|
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker <font color='#5555FF'><</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>|</font><font color='#5555FF'>|</font> marker <font color='#5555FF'>></font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST7<font face='Lucida Console'>)</font>
|
|
action <font color='#5555FF'>=</font> <font color='#979000'>3</font>; <font color='#009900'>/* valid non-restart marker */</font>
|
|
<font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>desired<font color='#5555FF'>+</font><font color='#979000'>1</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>7</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>
|
|
marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>desired<font color='#5555FF'>+</font><font color='#979000'>2</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>7</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
action <font color='#5555FF'>=</font> <font color='#979000'>3</font>; <font color='#009900'>/* one of the next two expected restarts */</font>
|
|
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>desired<font color='#5555FF'>-</font><font color='#979000'>1</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>7</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>
|
|
marker <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_RST0 <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>desired<font color='#5555FF'>-</font><font color='#979000'>2</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>7</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
action <font color='#5555FF'>=</font> <font color='#979000'>2</font>; <font color='#009900'>/* a prior restart, so advance */</font>
|
|
<font color='#0000FF'>else</font>
|
|
action <font color='#5555FF'>=</font> <font color='#979000'>1</font>; <font color='#009900'>/* desired restart or too far away */</font>
|
|
<b>}</b>
|
|
<font color='#BB00BB'>TRACEMS2</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>4</font>, JTRC_RECOVERY_ACTION, marker, action<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>action<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>case</font> <font color='#979000'>1</font>:
|
|
<font color='#009900'>/* Discard marker and let entropy decoder resume processing. */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<font color='#0000FF'>case</font> <font color='#979000'>2</font>:
|
|
<font color='#009900'>/* Scan to the next marker, and repeat the decision loop. */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> <font color='#BB00BB'>next_marker</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>
|
|
<font color='#0000FF'>return</font> FALSE;
|
|
marker <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker;
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> <font color='#979000'>3</font>:
|
|
<font color='#009900'>/* Return without advancing past this marker. */</font>
|
|
<font color='#009900'>/* Entropy decoder will be forced to process an empty segment. */</font>
|
|
<font color='#0000FF'>return</font> TRUE;
|
|
<b>}</b>
|
|
<b>}</b> <font color='#009900'>/* end loop */</font>
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Reset marker processing state to begin a fresh datastream.
|
|
*/</font>
|
|
|
|
<b><a name='METHODDEF'></a>METHODDEF</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='reset_marker_reader'></a>reset_marker_reader</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
my_marker_ptr marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker;
|
|
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comp_info <font color='#5555FF'>=</font> NULL; <font color='#009900'>/* until allocated by get_sof */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>input_scan_number <font color='#5555FF'>=</font> <font color='#979000'>0</font>; <font color='#009900'>/* no SOS seen yet */</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>unread_marker <font color='#5555FF'>=</font> <font color='#979000'>0</font>; <font color='#009900'>/* no pending marker */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.saw_SOI <font color='#5555FF'>=</font> FALSE; <font color='#009900'>/* set internal state too */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.saw_SOF <font color='#5555FF'>=</font> FALSE;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.discarded_bytes <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_marker <font color='#5555FF'>=</font> NULL;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Initialize the marker reader module.
|
|
* This is called only once, when the decompression object is created.
|
|
*/</font>
|
|
|
|
<b><a name='GLOBAL'></a>GLOBAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='jinit_marker_reader'></a>jinit_marker_reader</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo<font face='Lucida Console'>)</font>
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<b>{</b>
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my_marker_ptr marker;
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<font color='#0000FF'><u>int</u></font> i;
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<font color='#009900'>/* Create subobject in permanent pool */</font>
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marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font>
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<font face='Lucida Console'>(</font><font color='#5555FF'>*</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>mem<font color='#5555FF'>-</font><font color='#5555FF'>></font>alloc_small<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>j_common_ptr<font face='Lucida Console'>)</font> cinfo, JPOOL_PERMANENT,
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<font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font>my_marker_reader<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
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cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'>struct</font> jpeg_marker_reader <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> marker;
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<font color='#009900'>/* Initialize public method pointers */</font>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.reset_marker_reader <font color='#5555FF'>=</font> reset_marker_reader;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.read_markers <font color='#5555FF'>=</font> read_markers;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.read_restart_marker <font color='#5555FF'>=</font> read_restart_marker;
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<font color='#009900'>/* Initialize COM/APPn processing.
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* By default, we examine and then discard APP0 and APP14,
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* but simply discard COM and all other APPn.
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*/</font>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_COM <font color='#5555FF'>=</font> skip_variable;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_COM <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> <font color='#979000'>16</font>; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[i] <font color='#5555FF'>=</font> skip_variable;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_APPn[i] <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
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<b>}</b>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[<font color='#979000'>0</font>] <font color='#5555FF'>=</font> get_interesting_appn;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[<font color='#979000'>14</font>] <font color='#5555FF'>=</font> get_interesting_appn;
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<font color='#009900'>/* Reset marker processing state */</font>
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<font color='#BB00BB'>reset_marker_reader</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
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<b>}</b>
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<font color='#009900'>/*
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* Control saving of COM and APPn markers into marker_list.
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*/</font>
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<font color='#0000FF'>#ifdef</font> SAVE_MARKERS_SUPPORTED
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<b><a name='GLOBAL'></a>GLOBAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
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<b><a name='jpeg_save_markers'></a>jpeg_save_markers</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, <font color='#0000FF'><u>int</u></font> marker_code,
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> length_limit<font face='Lucida Console'>)</font>
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<b>{</b>
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my_marker_ptr marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker;
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<font color='#0000FF'><u>long</u></font> maxlength;
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jpeg_marker_parser_method processor;
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<font color='#009900'>/* Length limit mustn't be larger than what we can allocate
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* (should only be a concern in a 16-bit environment).
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*/</font>
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maxlength <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>mem<font color='#5555FF'>-</font><font color='#5555FF'>></font>max_alloc_chunk <font color='#5555FF'>-</font> <font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font><font color='#0000FF'>struct</font> <b><a name='jpeg_marker_struct'></a>jpeg_marker_struct</b><font face='Lucida Console'>)</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> length_limit<font face='Lucida Console'>)</font> <font color='#5555FF'>></font> maxlength<font face='Lucida Console'>)</font>
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length_limit <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> maxlength;
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<font color='#009900'>/* Choose processor routine to use.
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* APP0/APP14 have special requirements.
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*/</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length_limit<font face='Lucida Console'>)</font> <b>{</b>
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processor <font color='#5555FF'>=</font> save_marker;
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<font color='#009900'>/* If saving APP0/APP14, save at least enough for our internal use. */</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0 <font color='#5555FF'>&</font><font color='#5555FF'>&</font> length_limit <font color='#5555FF'><</font> APP0_DATA_LEN<font face='Lucida Console'>)</font>
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length_limit <font color='#5555FF'>=</font> APP0_DATA_LEN;
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<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP14 <font color='#5555FF'>&</font><font color='#5555FF'>&</font> length_limit <font color='#5555FF'><</font> APP14_DATA_LEN<font face='Lucida Console'>)</font>
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length_limit <font color='#5555FF'>=</font> APP14_DATA_LEN;
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<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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processor <font color='#5555FF'>=</font> skip_variable;
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<font color='#009900'>/* If discarding APP0/APP14, use our regular on-the-fly processor. */</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0 <font color='#5555FF'>|</font><font color='#5555FF'>|</font> marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP14<font face='Lucida Console'>)</font>
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processor <font color='#5555FF'>=</font> get_interesting_appn;
|
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<b>}</b>
|
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_COM<font face='Lucida Console'>)</font> <b>{</b>
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_COM <font color='#5555FF'>=</font> processor;
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_COM <font color='#5555FF'>=</font> length_limit;
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<b>}</b> <font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0 <font color='#5555FF'>&</font><font color='#5555FF'>&</font> marker_code <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP15<font face='Lucida Console'>)</font> <b>{</b>
|
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[marker_code <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0] <font color='#5555FF'>=</font> processor;
|
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marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>length_limit_APPn[marker_code <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0] <font color='#5555FF'>=</font> length_limit;
|
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<b>}</b> <font color='#0000FF'>else</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_UNKNOWN_MARKER, marker_code<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* SAVE_MARKERS_SUPPORTED */</font>
|
|
|
|
|
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<font color='#009900'>/*
|
|
* Install a special processing method for COM or APPn markers.
|
|
*/</font>
|
|
|
|
<b><a name='GLOBAL'></a>GLOBAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>
|
|
<b><a name='jpeg_set_marker_processor'></a>jpeg_set_marker_processor</b> <font face='Lucida Console'>(</font>j_decompress_ptr cinfo, <font color='#0000FF'><u>int</u></font> marker_code,
|
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jpeg_marker_parser_method routine<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
my_marker_ptr marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>marker;
|
|
|
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_COM<font face='Lucida Console'>)</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_COM <font color='#5555FF'>=</font> routine;
|
|
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>marker_code <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0 <font color='#5555FF'>&</font><font color='#5555FF'>&</font> marker_code <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP15<font face='Lucida Console'>)</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>process_APPn[marker_code <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> M_APP0] <font color='#5555FF'>=</font> routine;
|
|
<font color='#0000FF'>else</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_UNKNOWN_MARKER, marker_code<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
</pre></body></html> |
