|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#define JPEG_INTERNALS
|
|
#include "jinclude.h"
|
|
#include "jpeglib.h"
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#undef FULL_MAIN_BUFFER_SUPPORTED
|
|
|
|
|
|
|
|
|
|
typedef struct {
|
|
struct jpeg_c_main_controller pub;
|
|
|
|
JDIMENSION cur_iMCU_row;
|
|
JDIMENSION rowgroup_ctr;
|
|
boolean suspended;
|
|
J_BUF_MODE pass_mode;
|
|
|
|
|
|
|
|
|
|
|
|
JSAMPARRAY buffer[MAX_COMPONENTS];
|
|
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
|
|
|
|
|
|
jvirt_sarray_ptr whole_image[MAX_COMPONENTS];
|
|
#endif
|
|
} my_main_controller;
|
|
|
|
typedef my_main_controller * my_main_ptr;
|
|
|
|
|
|
|
|
METHODDEF(void) process_data_simple_main
|
|
JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf,
|
|
JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail));
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
METHODDEF(void) process_data_buffer_main
|
|
JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf,
|
|
JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail));
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
METHODDEF(void)
|
|
start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
|
|
{
|
|
my_main_ptr main = (my_main_ptr) cinfo->main;
|
|
|
|
|
|
if (cinfo->raw_data_in)
|
|
return;
|
|
|
|
main->cur_iMCU_row = 0;
|
|
main->rowgroup_ctr = 0;
|
|
main->suspended = FALSE;
|
|
main->pass_mode = pass_mode;
|
|
|
|
switch (pass_mode) {
|
|
case JBUF_PASS_THRU:
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
if (main->whole_image[0] != NULL)
|
|
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
|
|
#endif
|
|
main->pub.process_data = process_data_simple_main;
|
|
break;
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
case JBUF_SAVE_SOURCE:
|
|
case JBUF_CRANK_DEST:
|
|
case JBUF_SAVE_AND_PASS:
|
|
if (main->whole_image[0] == NULL)
|
|
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
|
|
main->pub.process_data = process_data_buffer_main;
|
|
break;
|
|
#endif
|
|
default:
|
|
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
METHODDEF(void)
|
|
process_data_simple_main (j_compress_ptr cinfo,
|
|
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
|
|
JDIMENSION in_rows_avail)
|
|
{
|
|
my_main_ptr main = (my_main_ptr) cinfo->main;
|
|
|
|
while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {
|
|
|
|
if (main->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
|
|
(*cinfo->prep->pre_process_data) (cinfo,
|
|
input_buf, in_row_ctr, in_rows_avail,
|
|
main->buffer, &main->rowgroup_ctr,
|
|
(JDIMENSION) cinfo->min_DCT_v_scaled_size);
|
|
|
|
|
|
|
|
|
|
|
|
if (main->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size)
|
|
return;
|
|
|
|
|
|
if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (! main->suspended) {
|
|
(*in_row_ctr)--;
|
|
main->suspended = TRUE;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
if (main->suspended) {
|
|
(*in_row_ctr)++;
|
|
main->suspended = FALSE;
|
|
}
|
|
main->rowgroup_ctr = 0;
|
|
main->cur_iMCU_row++;
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
|
|
|
|
|
|
|
|
|
|
|
|
METHODDEF(void)
|
|
process_data_buffer_main (j_compress_ptr cinfo,
|
|
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
|
|
JDIMENSION in_rows_avail)
|
|
{
|
|
my_main_ptr main = (my_main_ptr) cinfo->main;
|
|
int ci;
|
|
jpeg_component_info *compptr;
|
|
boolean writing = (main->pass_mode != JBUF_CRANK_DEST);
|
|
|
|
while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {
|
|
|
|
if (main->rowgroup_ctr == 0) {
|
|
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
|
|
ci++, compptr++) {
|
|
main->buffer[ci] = (*cinfo->mem->access_virt_sarray)
|
|
((j_common_ptr) cinfo, main->whole_image[ci],
|
|
main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE),
|
|
(JDIMENSION) (compptr->v_samp_factor * DCTSIZE), writing);
|
|
}
|
|
|
|
if (! writing) {
|
|
*in_row_ctr += cinfo->max_v_samp_factor * DCTSIZE;
|
|
main->rowgroup_ctr = DCTSIZE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
if (writing) {
|
|
(*cinfo->prep->pre_process_data) (cinfo,
|
|
input_buf, in_row_ctr, in_rows_avail,
|
|
main->buffer, &main->rowgroup_ctr,
|
|
(JDIMENSION) DCTSIZE);
|
|
|
|
if (main->rowgroup_ctr < DCTSIZE)
|
|
return;
|
|
}
|
|
|
|
|
|
if (main->pass_mode != JBUF_SAVE_SOURCE) {
|
|
if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (! main->suspended) {
|
|
(*in_row_ctr)--;
|
|
main->suspended = TRUE;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
if (main->suspended) {
|
|
(*in_row_ctr)++;
|
|
main->suspended = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
main->rowgroup_ctr = 0;
|
|
main->cur_iMCU_row++;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
GLOBAL(void)
|
|
jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
|
|
{
|
|
my_main_ptr main;
|
|
int ci;
|
|
jpeg_component_info *compptr;
|
|
|
|
main = (my_main_ptr)
|
|
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
|
|
SIZEOF(my_main_controller));
|
|
cinfo->main = (struct jpeg_c_main_controller *) main;
|
|
main->pub.start_pass = start_pass_main;
|
|
|
|
|
|
if (cinfo->raw_data_in)
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (need_full_buffer) {
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
|
|
|
|
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
|
|
ci++, compptr++) {
|
|
main->whole_image[ci] = (*cinfo->mem->request_virt_sarray)
|
|
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
|
|
compptr->width_in_blocks * compptr->DCT_h_scaled_size,
|
|
(JDIMENSION) jround_up((long) compptr->height_in_blocks,
|
|
(long) compptr->v_samp_factor) * DCTSIZE,
|
|
(JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
|
|
}
|
|
#else
|
|
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
|
|
#endif
|
|
} else {
|
|
#ifdef FULL_MAIN_BUFFER_SUPPORTED
|
|
main->whole_image[0] = NULL;
|
|
#endif
|
|
|
|
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
|
|
ci++, compptr++) {
|
|
main->buffer[ci] = (*cinfo->mem->alloc_sarray)
|
|
((j_common_ptr) cinfo, JPOOL_IMAGE,
|
|
compptr->width_in_blocks * compptr->DCT_h_scaled_size,
|
|
(JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
|
|
}
|
|
}
|
|
}
|
|
|