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<html><head><title>dlib C++ Library - jcmarker.c</title></head><body bgcolor='white'><pre> |
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<font color='#009900'>/*
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* jcmarker.c
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*
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* Copyright (C) 1991-1998, Thomas G. Lane.
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* Modified 2003-2010 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 write JPEG datastream markers.
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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_writer pub; <font color='#009900'>/* public fields */</font>
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> last_restart_interval; <font color='#009900'>/* last DRI value emitted; 0 after SOI */</font>
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<b>}</b> my_marker_writer;
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<font color='#0000FF'>typedef</font> my_marker_writer <font color='#5555FF'>*</font> my_marker_ptr;
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<font color='#009900'>/*
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* Basic output routines.
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*
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* Note that we do not support suspension while writing a marker.
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* Therefore, an application using suspension must ensure that there is
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* enough buffer space for the initial markers (typ. 600-700 bytes) before
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* calling jpeg_start_compress, and enough space to write the trailing EOI
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* (a few bytes) before calling jpeg_finish_compress. Multipass compression
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* modes are not supported at all with suspension, so those two are the only
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* points where markers will be written.
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*/</font>
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<b><a name='LOCAL'></a>LOCAL</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='emit_byte'></a>emit_byte</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> val<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Emit a byte */</font>
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<b>{</b>
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<font color='#0000FF'>struct</font> jpeg_destination_mgr <font color='#5555FF'>*</font> dest <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>dest;
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<font color='#5555FF'>*</font><font face='Lucida Console'>(</font>dest<font color='#5555FF'>-</font><font color='#5555FF'>></font>next_output_byte<font face='Lucida Console'>)</font><font color='#5555FF'>+</font><font color='#5555FF'>+</font> <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>JOCTET<font face='Lucida Console'>)</font> val;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>-</font><font color='#5555FF'>-</font>dest<font color='#5555FF'>-</font><font color='#5555FF'>></font>free_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>dest<font color='#5555FF'>-</font><font color='#5555FF'>></font>empty_output_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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<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_CANT_SUSPEND<font face='Lucida Console'>)</font>;
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<b>}</b>
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<b>}</b>
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<b><a name='LOCAL'></a>LOCAL</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='emit_marker'></a>emit_marker</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, JPEG_MARKER mark<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Emit a marker code */</font>
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<b>{</b>
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> mark<font face='Lucida Console'>)</font>;
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<b>}</b>
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<b><a name='LOCAL'></a>LOCAL</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='emit_2bytes'></a>emit_2bytes</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> value<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Emit a 2-byte integer; these are always MSB first in JPEG files */</font>
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<b>{</b>
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>value <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, value <font color='#5555FF'>&</font> <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font>;
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<b>}</b>
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<font color='#009900'>/*
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* Routines to write specific marker types.
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*/</font>
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<b><a name='LOCAL'></a>LOCAL</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font>
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<b><a name='emit_dqt'></a>emit_dqt</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> index<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Emit a DQT marker */</font>
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<font color='#009900'>/* Returns the precision used (0 = 8bits, 1 = 16bits) for baseline checking */</font>
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<b>{</b>
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JQUANT_TBL <font color='#5555FF'>*</font> qtbl <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_ptrs[index];
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<font color='#0000FF'><u>int</u></font> prec;
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<font color='#0000FF'><u>int</u></font> i;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>qtbl <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
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<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_NO_QUANT_TABLE, index<font face='Lucida Console'>)</font>;
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prec <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='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>lim_Se; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>qtbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>natural_order[i]] <font color='#5555FF'>></font> <font color='#979000'>255</font><font face='Lucida Console'>)</font>
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prec <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
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<b>}</b>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> qtbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>sent_table<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_DQT<font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo,
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prec ? cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>lim_Se <font color='#5555FF'>*</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> : cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>lim_Se <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font><font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, index <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font>prec<font color='#5555FF'><</font><font color='#5555FF'><</font><font color='#979000'>4</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</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='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>lim_Se; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
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<font color='#009900'>/* The table entries must be emitted in zigzag order. */</font>
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> qval <font color='#5555FF'>=</font> qtbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>quantval[cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>natural_order[i]];
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>prec<font face='Lucida Console'>)</font>
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>qval <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>8</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>qval <font color='#5555FF'>&</font> <font color='#979000'>0xFF</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
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<b>}</b>
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qtbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>sent_table <font color='#5555FF'>=</font> TRUE;
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<b>}</b>
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<font color='#0000FF'>return</font> prec;
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<b>}</b>
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<b><a name='LOCAL'></a>LOCAL</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='emit_dht'></a>emit_dht</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> index, boolean is_ac<font face='Lucida Console'>)</font>
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<font color='#009900'>/* Emit a DHT marker */</font>
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<b>{</b>
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JHUFF_TBL <font color='#5555FF'>*</font> htbl;
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<font color='#0000FF'><u>int</u></font> length, i;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>is_ac<font face='Lucida Console'>)</font> <b>{</b>
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htbl <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_huff_tbl_ptrs[index];
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index <font color='#5555FF'>+</font><font color='#5555FF'>=</font> <font color='#979000'>0x10</font>; <font color='#009900'>/* output index has AC bit set */</font>
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<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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htbl <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_huff_tbl_ptrs[index];
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<b>}</b>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>htbl <font color='#5555FF'>=</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
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<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_NO_HUFF_TABLE, index<font face='Lucida Console'>)</font>;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font> htbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>sent_table<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_DHT<font face='Lucida Console'>)</font>;
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length <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'>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>
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length <font color='#5555FF'>+</font><font color='#5555FF'>=</font> htbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>bits[i];
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<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, length <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>16</font><font face='Lucida Console'>)</font>;
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, index<font face='Lucida Console'>)</font>;
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<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>
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<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, htbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>bits[i]<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> length; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, htbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>huffval[i]<font face='Lucida Console'>)</font>;
|
|
|
|
htbl<font color='#5555FF'>-</font><font color='#5555FF'>></font>sent_table <font color='#5555FF'>=</font> TRUE;
|
|
<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='emit_dac'></a>emit_dac</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a DAC marker */</font>
|
|
<font color='#009900'>/* Since the useful info is so small, we want to emit all the tables in */</font>
|
|
<font color='#009900'>/* one DAC marker. Therefore this routine does its own scan of the table. */</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'>#ifdef</font> C_ARITH_CODING_SUPPORTED
|
|
<font color='#0000FF'><u>char</u></font> dc_in_use[NUM_ARITH_TBLS];
|
|
<font color='#0000FF'><u>char</u></font> ac_in_use[NUM_ARITH_TBLS];
|
|
<font color='#0000FF'><u>int</u></font> length, i;
|
|
jpeg_component_info <font color='#5555FF'>*</font>compptr;
|
|
|
|
<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>
|
|
dc_in_use[i] <font color='#5555FF'>=</font> ac_in_use[i] <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'>0</font>; i <font color='#5555FF'><</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
compptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_comp_info[i];
|
|
<font color='#009900'>/* DC needs no table for refinement scan */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss <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>Ah <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
|
|
dc_in_use[compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no] <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
|
|
<font color='#009900'>/* AC needs no table when not present */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se<font face='Lucida Console'>)</font>
|
|
ac_in_use[compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no] <font color='#5555FF'>=</font> <font color='#979000'>1</font>;
|
|
<b>}</b>
|
|
|
|
length <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'>0</font>; i <font color='#5555FF'><</font> NUM_ARITH_TBLS; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font>
|
|
length <font color='#5555FF'>+</font><font color='#5555FF'>=</font> dc_in_use[i] <font color='#5555FF'>+</font> ac_in_use[i];
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>length<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_DAC<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, length<font color='#5555FF'>*</font><font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font><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> NUM_ARITH_TBLS; 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>dc_in_use[i]<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, i<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_L[i] <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_dc_U[i]<font color='#5555FF'><</font><font color='#5555FF'><</font><font color='#979000'>4</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>ac_in_use[i]<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, i <font color='#5555FF'>+</font> <font color='#979000'>0x10</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_ac_K[i]<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
<b>}</b>
|
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* C_ARITH_CODING_SUPPORTED */</font>
|
|
<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='emit_dri'></a>emit_dri</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a DRI marker */</font>
|
|
<b>{</b>
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_DRI<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>4</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* fixed length */</font>
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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>restart_interval<font face='Lucida Console'>)</font>;
|
|
<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='emit_sof'></a>emit_sof</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, JPEG_MARKER code<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a SOF marker */</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> ci;
|
|
jpeg_component_info <font color='#5555FF'>*</font>compptr;
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, code<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>3</font> <font color='#5555FF'>*</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>5</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* length */</font>
|
|
|
|
<font color='#009900'>/* Make sure image isn't bigger than SOF field can handle */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>jpeg_height <font color='#5555FF'>></font> <font color='#979000'>65535</font>L <font color='#5555FF'>|</font><font color='#5555FF'>|</font>
|
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>long</u></font><font face='Lucida Console'>)</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>jpeg_width <font color='#5555FF'>></font> <font color='#979000'>65535</font>L<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>ERREXIT1</font><font face='Lucida Console'>(</font>cinfo, JERR_IMAGE_TOO_BIG, <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='#979000'>65535</font><font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>data_precision<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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>jpeg_height<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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>jpeg_width<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>num_components<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='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_id<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>h_samp_factor <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>v_samp_factor<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_no<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='emit_sos'></a>emit_sos</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a SOS marker */</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> i, td, ta;
|
|
jpeg_component_info <font color='#5555FF'>*</font>compptr;
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_SOS<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font> <font color='#5555FF'>*</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>3</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* length */</font>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan<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> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
|
|
compptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_comp_info[i];
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>component_id<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#009900'>/* We emit 0 for unused field(s); this is recommended by the P&M text
|
|
* but does not seem to be specified in the standard.
|
|
*/</font>
|
|
|
|
<font color='#009900'>/* DC needs no table for refinement scan */</font>
|
|
td <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss <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>Ah <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font> ? compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no : <font color='#979000'>0</font>;
|
|
<font color='#009900'>/* AC needs no table when not present */</font>
|
|
ta <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se ? compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no : <font color='#979000'>0</font>;
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>td <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> ta<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ah <font color='#5555FF'><</font><font color='#5555FF'><</font> <font color='#979000'>4</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Al<font face='Lucida Console'>)</font>;
|
|
<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='emit_pseudo_sos'></a>emit_pseudo_sos</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a pseudo SOS marker */</font>
|
|
<b>{</b>
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_SOS<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>3</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* length */</font>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Ns */</font>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Ss */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>block_size <font color='#5555FF'>*</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>block_size <font color='#5555FF'>-</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Se */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Ah/Al */</font>
|
|
<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='emit_jfif_app0'></a>emit_jfif_app0</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit a JFIF-compliant APP0 marker */</font>
|
|
<b>{</b>
|
|
<font color='#009900'>/*
|
|
* Length of APP0 block (2 bytes)
|
|
* Block ID (4 bytes - ASCII "JFIF")
|
|
* Zero byte (1 byte to terminate the ID string)
|
|
* Version Major, Minor (2 bytes - major first)
|
|
* Units (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
|
|
* Xdpu (2 bytes - dots per unit horizontal)
|
|
* Ydpu (2 bytes - dots per unit vertical)
|
|
* Thumbnail X size (1 byte)
|
|
* Thumbnail Y size (1 byte)
|
|
*/</font>
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_APP0<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>4</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* length */</font>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x4A</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Identifier: ASCII "JFIF" */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x46</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x49</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x46</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_major_version<font face='Lucida Console'>)</font>; <font color='#009900'>/* Version fields */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>JFIF_minor_version<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>density_unit<font face='Lucida Console'>)</font>; <font color='#009900'>/* Pixel size information */</font>
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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>X_density<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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>Y_density<font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* No thumbnail image */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>;
|
|
<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='emit_adobe_app14'></a>emit_adobe_app14</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit an Adobe APP14 marker */</font>
|
|
<b>{</b>
|
|
<font color='#009900'>/*
|
|
* Length of APP14 block (2 bytes)
|
|
* Block ID (5 bytes - ASCII "Adobe")
|
|
* Version Number (2 bytes - currently 100)
|
|
* Flags0 (2 bytes - currently 0)
|
|
* Flags1 (2 bytes - currently 0)
|
|
* Color transform (1 byte)
|
|
*
|
|
* Although Adobe TN 5116 mentions Version = 101, all the Adobe files
|
|
* now in circulation seem to use Version = 100, so that's what we write.
|
|
*
|
|
* We write the color transform byte as 1 if the JPEG color space is
|
|
* YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with
|
|
* whether the encoder performed a transformation, which is pretty useless.
|
|
*/</font>
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_APP14<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>5</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>2</font> <font color='#5555FF'>+</font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* length */</font>
|
|
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x41</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Identifier: ASCII "Adobe" */</font>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x64</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x6F</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x62</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0x65</font><font face='Lucida Console'>)</font>;
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>100</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Version */</font>
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Flags0 */</font>
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Flags1 */</font>
|
|
<font color='#0000FF'>switch</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>jpeg_color_space<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#0000FF'>case</font> JCS_YCbCr:
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>1</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Color transform = 1 */</font>
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>case</font> JCS_YCCK:
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>2</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Color transform = 2 */</font>
|
|
<font color='#0000FF'>break</font>;
|
|
<font color='#0000FF'>default</font>:
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* Color transform = 0 */</font>
|
|
<font color='#0000FF'>break</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* These routines allow writing an arbitrary marker with parameters.
|
|
* The only intended use is to emit COM or APPn markers after calling
|
|
* write_file_header and before calling write_frame_header.
|
|
* Other uses are not guaranteed to produce desirable results.
|
|
* Counting the parameter bytes properly is the caller's responsibility.
|
|
*/</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='write_marker_header'></a>write_marker_header</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> marker, <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> datalen<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit an arbitrary marker header */</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>datalen <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> <font color='#979000'>65533</font><font face='Lucida Console'>)</font> <font color='#009900'>/* safety check */</font>
|
|
<font color='#BB00BB'>ERREXIT</font><font face='Lucida Console'>(</font>cinfo, JERR_BAD_LENGTH<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, <font face='Lucida Console'>(</font>JPEG_MARKER<font face='Lucida Console'>)</font> marker<font face='Lucida Console'>)</font>;
|
|
|
|
<font color='#BB00BB'>emit_2bytes</font><font face='Lucida Console'>(</font>cinfo, <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> <font color='#979000'>2</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; <font color='#009900'>/* total length */</font>
|
|
<b>}</b>
|
|
|
|
<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='write_marker_byte'></a>write_marker_byte</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo, <font color='#0000FF'><u>int</u></font> val<font face='Lucida Console'>)</font>
|
|
<font color='#009900'>/* Emit one byte of marker parameters following write_marker_header */</font>
|
|
<b>{</b>
|
|
<font color='#BB00BB'>emit_byte</font><font face='Lucida Console'>(</font>cinfo, val<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Write datastream header.
|
|
* This consists of an SOI and optional APPn markers.
|
|
* We recommend use of the JFIF marker, but not the Adobe marker,
|
|
* when using YCbCr or grayscale data. The JFIF marker should NOT
|
|
* be used for any other JPEG colorspace. The Adobe marker is helpful
|
|
* to distinguish RGB, CMYK, and YCCK colorspaces.
|
|
* Note that an application can write additional header markers after
|
|
* jpeg_start_compress returns.
|
|
*/</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='write_file_header'></a>write_file_header</b> <font face='Lucida Console'>(</font>j_compress_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;
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_SOI<font face='Lucida Console'>)</font>; <font color='#009900'>/* first the SOI */</font>
|
|
|
|
<font color='#009900'>/* SOI is defined to reset restart interval to 0 */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>last_restart_interval <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>write_JFIF_header<font face='Lucida Console'>)</font> <font color='#009900'>/* next an optional JFIF APP0 */</font>
|
|
<font color='#BB00BB'>emit_jfif_app0</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>write_Adobe_marker<font face='Lucida Console'>)</font> <font color='#009900'>/* next an optional Adobe APP14 */</font>
|
|
<font color='#BB00BB'>emit_adobe_app14</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Write frame header.
|
|
* This consists of DQT and SOFn markers, and a conditional pseudo SOS marker.
|
|
* Note that we do not emit the SOF until we have emitted the DQT(s).
|
|
* This avoids compatibility problems with incorrect implementations that
|
|
* try to error-check the quant table numbers as soon as they see the SOF.
|
|
*/</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='write_frame_header'></a>write_frame_header</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> ci, prec;
|
|
boolean is_baseline;
|
|
jpeg_component_info <font color='#5555FF'>*</font>compptr;
|
|
|
|
<font color='#009900'>/* Emit DQT for each quantization table.
|
|
* Note that emit_dqt() suppresses any duplicate tables.
|
|
*/</font>
|
|
prec <font color='#5555FF'>=</font> <font color='#979000'>0</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>
|
|
prec <font color='#5555FF'>+</font><font color='#5555FF'>=</font> <font color='#BB00BB'>emit_dqt</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_no<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<font color='#009900'>/* now prec is nonzero iff there are any 16-bit quant tables. */</font>
|
|
|
|
<font color='#009900'>/* Check for a non-baseline specification.
|
|
* Note we assume that Huffman table numbers won't be changed later.
|
|
*/</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_code <font color='#5555FF'>|</font><font color='#5555FF'>|</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>progressive_mode <font color='#5555FF'>|</font><font color='#5555FF'>|</font>
|
|
cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>data_precision <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>8</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>block_size <font color='#5555FF'>!</font><font color='#5555FF'>=</font> DCTSIZE<font face='Lucida Console'>)</font> <b>{</b>
|
|
is_baseline <font color='#5555FF'>=</font> FALSE;
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
is_baseline <font color='#5555FF'>=</font> TRUE;
|
|
<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>compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no <font color='#5555FF'>></font> <font color='#979000'>1</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no <font color='#5555FF'>></font> <font color='#979000'>1</font><font face='Lucida Console'>)</font>
|
|
is_baseline <font color='#5555FF'>=</font> FALSE;
|
|
<b>}</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>prec <font color='#5555FF'>&</font><font color='#5555FF'>&</font> is_baseline<font face='Lucida Console'>)</font> <b>{</b>
|
|
is_baseline <font color='#5555FF'>=</font> FALSE;
|
|
<font color='#009900'>/* If it's baseline except for quantizer size, warn the user */</font>
|
|
<font color='#BB00BB'>TRACEMS</font><font face='Lucida Console'>(</font>cinfo, <font color='#979000'>0</font>, JTRC_16BIT_TABLES<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
<font color='#009900'>/* Emit the proper SOF marker */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_code<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>progressive_mode<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_sof</font><font face='Lucida Console'>(</font>cinfo, M_SOF10<font face='Lucida Console'>)</font>; <font color='#009900'>/* SOF code for progressive arithmetic */</font>
|
|
<font color='#0000FF'>else</font>
|
|
<font color='#BB00BB'>emit_sof</font><font face='Lucida Console'>(</font>cinfo, M_SOF9<font face='Lucida Console'>)</font>; <font color='#009900'>/* SOF code for sequential arithmetic */</font>
|
|
<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>progressive_mode<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_sof</font><font face='Lucida Console'>(</font>cinfo, M_SOF2<font face='Lucida Console'>)</font>; <font color='#009900'>/* SOF code for progressive Huffman */</font>
|
|
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>is_baseline<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_sof</font><font face='Lucida Console'>(</font>cinfo, M_SOF0<font face='Lucida Console'>)</font>; <font color='#009900'>/* SOF code for baseline implementation */</font>
|
|
<font color='#0000FF'>else</font>
|
|
<font color='#BB00BB'>emit_sof</font><font face='Lucida Console'>(</font>cinfo, M_SOF1<font face='Lucida Console'>)</font>; <font color='#009900'>/* SOF code for non-baseline Huffman file */</font>
|
|
<b>}</b>
|
|
|
|
<font color='#009900'>/* Check to emit pseudo SOS marker */</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>progressive_mode <font color='#5555FF'>&</font><font color='#5555FF'>&</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>block_size <font color='#5555FF'>!</font><font color='#5555FF'>=</font> DCTSIZE<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_pseudo_sos</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Write scan header.
|
|
* This consists of DHT or DAC markers, optional DRI, and SOS.
|
|
* Compressed data will be written following the SOS.
|
|
*/</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='write_scan_header'></a>write_scan_header</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<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>int</u></font> i;
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jpeg_component_info <font color='#5555FF'>*</font>compptr;
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>arith_code<font face='Lucida Console'>)</font> <b>{</b>
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<font color='#009900'>/* Emit arith conditioning info. We may have some duplication
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* if the file has multiple scans, but it's so small it's hardly
|
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* worth worrying about.
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*/</font>
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<font color='#BB00BB'>emit_dac</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
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<b>}</b> <font color='#0000FF'>else</font> <b>{</b>
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<font color='#009900'>/* Emit Huffman tables.
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* Note that emit_dht() suppresses any duplicate tables.
|
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*/</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> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>comps_in_scan; i<font color='#5555FF'>+</font><font color='#5555FF'>+</font><font face='Lucida Console'>)</font> <b>{</b>
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compptr <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>cur_comp_info[i];
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<font color='#009900'>/* DC needs no table for refinement scan */</font>
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Ss <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>Ah <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
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<font color='#BB00BB'>emit_dht</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_tbl_no, FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#009900'>/* AC needs no table when not present */</font>
|
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<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>Se<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_dht</font><font face='Lucida Console'>(</font>cinfo, compptr<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_tbl_no, TRUE<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
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<font color='#009900'>/* Emit DRI if required --- note that DRI value could change for each scan.
|
|
* We avoid wasting space with unnecessary DRIs, however.
|
|
*/</font>
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>restart_interval <font color='#5555FF'>!</font><font color='#5555FF'>=</font> marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>last_restart_interval<font face='Lucida Console'>)</font> <b>{</b>
|
|
<font color='#BB00BB'>emit_dri</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>last_restart_interval <font color='#5555FF'>=</font> cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>restart_interval;
|
|
<b>}</b>
|
|
|
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<font color='#BB00BB'>emit_sos</font><font face='Lucida Console'>(</font>cinfo<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Write datastream trailer.
|
|
*/</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='write_file_trailer'></a>write_file_trailer</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_EOI<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Write an abbreviated table-specification datastream.
|
|
* This consists of SOI, DQT and DHT tables, and EOI.
|
|
* Any table that is defined and not marked sent_table = TRUE will be
|
|
* emitted. Note that all tables will be marked sent_table = TRUE at exit.
|
|
*/</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='write_tables_only'></a>write_tables_only</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
<font color='#0000FF'><u>int</u></font> i;
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_SOI<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> NUM_QUANT_TBLS; 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>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>quant_tbl_ptrs[i] <font color='#5555FF'>!</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
|
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font> <font color='#BB00BB'>emit_dqt</font><font face='Lucida Console'>(</font>cinfo, i<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>arith_code<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> NUM_HUFF_TBLS; 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>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>dc_huff_tbl_ptrs[i] <font color='#5555FF'>!</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_dht</font><font face='Lucida Console'>(</font>cinfo, i, FALSE<font face='Lucida Console'>)</font>;
|
|
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>cinfo<font color='#5555FF'>-</font><font color='#5555FF'>></font>ac_huff_tbl_ptrs[i] <font color='#5555FF'>!</font><font color='#5555FF'>=</font> NULL<font face='Lucida Console'>)</font>
|
|
<font color='#BB00BB'>emit_dht</font><font face='Lucida Console'>(</font>cinfo, i, TRUE<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
<b>}</b>
|
|
|
|
<font color='#BB00BB'>emit_marker</font><font face='Lucida Console'>(</font>cinfo, M_EOI<font face='Lucida Console'>)</font>;
|
|
<b>}</b>
|
|
|
|
|
|
<font color='#009900'>/*
|
|
* Initialize the marker writer module.
|
|
*/</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_writer'></a>jinit_marker_writer</b> <font face='Lucida Console'>(</font>j_compress_ptr cinfo<font face='Lucida Console'>)</font>
|
|
<b>{</b>
|
|
my_marker_ptr marker;
|
|
|
|
<font color='#009900'>/* Create the subobject */</font>
|
|
marker <font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>my_marker_ptr<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,
|
|
<font color='#BB00BB'>SIZEOF</font><font face='Lucida Console'>(</font>my_marker_writer<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>;
|
|
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_writer <font color='#5555FF'>*</font><font face='Lucida Console'>)</font> marker;
|
|
<font color='#009900'>/* Initialize method pointers */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_file_header <font color='#5555FF'>=</font> write_file_header;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_frame_header <font color='#5555FF'>=</font> write_frame_header;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_scan_header <font color='#5555FF'>=</font> write_scan_header;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_file_trailer <font color='#5555FF'>=</font> write_file_trailer;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_tables_only <font color='#5555FF'>=</font> write_tables_only;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_marker_header <font color='#5555FF'>=</font> write_marker_header;
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>pub.write_marker_byte <font color='#5555FF'>=</font> write_marker_byte;
|
|
<font color='#009900'>/* Initialize private state */</font>
|
|
marker<font color='#5555FF'>-</font><font color='#5555FF'>></font>last_restart_interval <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
|
|
<b>}</b>
|
|
|
|
</pre></body></html> |
