transdecode_master_selection (j_decompress_ptr cinfo)
{
/* This is effectively a buffered-image operation. */
cinfo->buffered_image = TRUE;
#if JPEG_LIB_VERSION >= 80
/* Compute output image dimensions and related values. */
jpeg_core_output_dimensions(cinfo);
#endif
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
#ifdef D_ARITH_CODING_SUPPORTED
jinit_arith_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
#endif
} else {
if (cinfo->progressive_mode) {
#ifdef D_PROGRESSIVE_SUPPORTED
jinit_phuff_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_huff_decoder(cinfo);
}
/* Always get a full-image coefficient buffer. */
jinit_d_coef_controller(cinfo, TRUE);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Initialize input side of decompressor to consume first scan. */
(*cinfo->inputctl->start_input_pass) (cinfo);
/* Initialize progress monitoring. */
if (cinfo->progress != NULL) {
int nscans;
/* Estimate number of scans to set pass_limit. */
if (cinfo->progressive_mode) {
/* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
nscans = 2 + 3 * cinfo->num_components;
} else if (cinfo->inputctl->has_multiple_scans) {
/* For a nonprogressive multiscan file, estimate 1 scan per component. */
nscans = cinfo->num_components;
} else {
nscans = 1;
}
cinfo->progress->pass_counter = 0L;
cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
cinfo->progress->completed_passes = 0;
cinfo->progress->total_passes = 1;
}
}
jinit_lossy_d_codec (j_decompress_ptr cinfo)
{
j_lossy_d_ptr lossyd;
boolean use_c_buffer;
/* Create subobject in permanent pool */
lossyd = (j_lossy_d_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
SIZEOF(jpeg_lossy_d_codec));
cinfo->codec = (struct jpeg_d_codec *) lossyd;
/* Initialize sub-modules */
/* Inverse DCT */
jinit_inverse_dct(cinfo);
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
#ifdef WITH_ARITHMETIC_PATCH
jinit_arith_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
#endif
} else {
if (cinfo->process == JPROC_PROGRESSIVE) {
#ifdef D_PROGRESSIVE_SUPPORTED
jinit_phuff_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_shuff_decoder(cinfo);
}
use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;
jinit_d_coef_controller(cinfo, use_c_buffer);
/* Initialize method pointers.
*
* Note: consume_data and decompress_data are assigned in jdcoefct.c.
*/
lossyd->pub.calc_output_dimensions = calc_output_dimensions;
lossyd->pub.start_input_pass = start_input_pass;
lossyd->pub.start_output_pass = start_output_pass;
}
consume_data_multi_scan(j_decompress_ptr cinfo) {
huffman_index *index = cinfo->entropy->index;
int i, retcode, ci;
int mcu = cinfo->input_iMCU_row;
jinit_phuff_decoder(cinfo);
for (i = 0; i < index->scan_count; i++) {
(*cinfo->inputctl->finish_input_pass)(cinfo);
jset_input_stream_position(cinfo, index->scan[i].bitstream_offset);
cinfo->output_iMCU_row = mcu;
cinfo->unread_marker = 0;
// Consume SOS and DHT headers
retcode = (*cinfo->inputctl->consume_markers)(cinfo, index, i);
cinfo->input_iMCU_row = mcu;
cinfo->input_scan_number = i;
cinfo->entropy->index = index;
// Consume scan block data
consume_data(cinfo);
}
cinfo->input_iMCU_row = mcu + 1;
cinfo->input_scan_number = 0;
cinfo->output_scan_number = 0;
return JPEG_ROW_COMPLETED;
}
LOCAL void
master_selection (j_decompress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
boolean use_c_buffer;
long samplesperrow;
JDIMENSION jd_samplesperrow;
/* Initialize dimensions and other stuff */
jpeg_calc_output_dimensions(cinfo);
prepare_range_limit_table(cinfo);
/* Width of an output scanline must be representable as JDIMENSION. */
samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;
jd_samplesperrow = (JDIMENSION) samplesperrow;
if ((long) jd_samplesperrow != samplesperrow)
ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
/* Initialize my private state */
master->pass_number = 0;
master->using_merged_upsample = use_merged_upsample(cinfo);
/* Color quantizer selection */
master->quantizer_1pass = NULL;
master->quantizer_2pass = NULL;
/* No mode changes if not using buffered-image mode. */
if (! cinfo->quantize_colors || ! cinfo->buffered_image) {
cinfo->enable_1pass_quant = FALSE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
}
if (cinfo->quantize_colors) {
if (cinfo->raw_data_out)
ERREXIT(cinfo, JERR_NOTIMPL);
/* 2-pass quantizer only works in 3-component color space. */
if (cinfo->out_color_components != 3) {
cinfo->enable_1pass_quant = TRUE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
cinfo->colormap = NULL;
} else if (cinfo->colormap != NULL) {
cinfo->enable_external_quant = TRUE;
} else if (cinfo->two_pass_quantize) {
cinfo->enable_2pass_quant = TRUE;
} else {
cinfo->enable_1pass_quant = TRUE;
}
if (cinfo->enable_1pass_quant) {
#ifdef QUANT_1PASS_SUPPORTED
jinit_1pass_quantizer(cinfo);
master->quantizer_1pass = cinfo->cquantize;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
/* We use the 2-pass code to map to external colormaps. */
if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {
#ifdef QUANT_2PASS_SUPPORTED
jinit_2pass_quantizer(cinfo);
master->quantizer_2pass = cinfo->cquantize;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
/* If both quantizers are initialized, the 2-pass one is left active;
* this is necessary for starting with quantization to an external map.
*/
}
/* Post-processing: in particular, color conversion first */
if (! cinfo->raw_data_out) {
if (master->using_merged_upsample) {
#ifdef UPSAMPLE_MERGING_SUPPORTED
jinit_merged_upsampler(cinfo); /* does color conversion too */
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
jinit_color_deconverter(cinfo);
jinit_upsampler(cinfo);
}
jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);
}
/* Inverse DCT */
jinit_inverse_dct(cinfo);
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
#ifdef D_PROGRESSIVE_SUPPORTED
jinit_phuff_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_NO_PROGRESSIVE);
#endif
} else
jinit_huff_decoder(cinfo);
}
/* Initialize principal buffer controllers. */
use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;
jinit_d_coef_controller(cinfo, use_c_buffer);
if (! cinfo->raw_data_out)
jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Initialize input side of decompressor to consume first scan. */
(*cinfo->inputctl->start_input_pass) (cinfo);
#ifdef D_MULTISCAN_FILES_SUPPORTED
/* If jpeg_start_decompress will read the whole file, initialize
* progress monitoring appropriately. The input step is counted
* as one pass.
*/
if (cinfo->progress != NULL && ! cinfo->buffered_image &&
cinfo->inputctl->has_multiple_scans) {
int nscans;
/* Estimate number of scans to set pass_limit. */
if (cinfo->progressive_mode) {
/* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
nscans = 2 + 3 * cinfo->num_components;
} else {
/* For a nonprogressive multiscan file, estimate 1 scan per component. */
nscans = cinfo->num_components;
}
cinfo->progress->pass_counter = 0L;
cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
cinfo->progress->completed_passes = 0;
cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);
/* Count the input pass as done */
master->pass_number++;
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */
}
jpeg_build_huffman_index_progressive(j_decompress_ptr cinfo,
huffman_index *index)
{
if (cinfo->global_state == DSTATE_READY) {
JPEG_TRACE("Progressive Mode\n");
/* First call: initialize active modules */
transdecode_master_selection(cinfo);
cinfo->global_state = DSTATE_RDCOEFS;
}
if (cinfo->global_state == DSTATE_RDCOEFS) {
int mcu, i;
cinfo->marker->get_sos_marker_position(cinfo, index);
/* Absorb whole file into the coef buffer */
for (mcu = 0; (unsigned int)mcu < cinfo->total_iMCU_rows; mcu++) {
int retcode = 0;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL)
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
/* Absorb some more input */
jinit_phuff_decoder(cinfo);
for (i = 0; i < index->scan_count; i++) {
(*cinfo->inputctl->finish_input_pass) (cinfo);
jset_input_stream_position(cinfo, index->scan[i].bitstream_offset);
cinfo->unread_marker = 0;
retcode = (*cinfo->inputctl->consume_input_build_huffman_index)
(cinfo, index, i);
if (retcode == JPEG_REACHED_EOI)
break;
cinfo->input_iMCU_row = mcu;
if (mcu != 0)
(*cinfo->entropy->configure_huffman_decoder)
(cinfo, index->scan[i].prev_MCU_offset);
cinfo->input_scan_number = i;
retcode = (*cinfo->inputctl->consume_input_build_huffman_index)
(cinfo, index, i);
}
if (retcode == JPEG_SUSPENDED)
return FALSE;
if (retcode == JPEG_REACHED_EOI)
break;
/* Advance progress counter if appropriate */
if (cinfo->progress != NULL &&
(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
/* startup underestimated number of scans; ratchet up one scan */
cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
}
}
}
cinfo->global_state = DSTATE_STOPPING;
}
/* At this point we should be in state DSTATE_STOPPING if being used
* standalone, or in state DSTATE_BUFIMAGE if being invoked to get access
* to the coefficients during a full buffered-image-mode decompression.
*/
if ((cinfo->global_state == DSTATE_STOPPING ||
cinfo->global_state == DSTATE_BUFIMAGE) && cinfo->buffered_image) {
return TRUE;
}
/* Oops, improper usage */
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
return FALSE; /* keep compiler happy */
}
static void master_selection (CJPegDecompress * cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
Word8 use_c_buffer;
long samplesperrow;
Word jd_samplesperrow;
/* Initialize dimensions and other stuff */
jpeg_calc_output_dimensions(cinfo);
prepare_range_limit_table(cinfo);
/* Width of an output scanline must be representable as Word. */
samplesperrow = (long) cinfo->output_width * (long) cinfo->m_ColorComponents;
jd_samplesperrow = (Word) samplesperrow;
if ((long) jd_samplesperrow != samplesperrow)
cinfo->FatalError(JPeg70::JERR_WIDTH_OVERFLOW);
/* Initialize my private state */
master->pass_number = 0;
master->using_merged_upsample = use_merged_upsample(cinfo);
/* Color quantizer selection */
master->quantizer_1pass = NULL;
master->quantizer_2pass = NULL;
/* No mode changes if not using buffered-image mode. */
if (! cinfo->m_QuantizeColors || ! cinfo->buffered_image) {
cinfo->enable_1pass_quant = FALSE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
}
if (cinfo->m_QuantizeColors) {
if (cinfo->raw_data_out)
cinfo->FatalError(JPeg70::JERR_NOTIMPL);
/* 2-pass quantizer only works in 3-component color space. */
if (cinfo->m_ColorComponents != 3) {
cinfo->enable_1pass_quant = TRUE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
cinfo->colormap = 0;
} else if (cinfo->colormap) {
cinfo->enable_external_quant = TRUE;
} else if (cinfo->two_pass_quantize) {
cinfo->enable_2pass_quant = TRUE;
} else {
cinfo->enable_1pass_quant = TRUE;
}
if (cinfo->enable_1pass_quant) {
cinfo->m_CQuantizePtr = new JPeg70::CColorQuantizer1Pass(cinfo);
master->quantizer_1pass = cinfo->m_CQuantizePtr;
}
/* We use the 2-pass code to map to external colormaps. */
if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {
cinfo->m_CQuantizePtr = new JPeg70::CColorQuantizer2Pass(cinfo);
master->quantizer_2pass = cinfo->m_CQuantizePtr;
}
/* If both quantizers are initialized, the 2-pass one is left active;
* this is necessary for starting with quantization to an external map.
*/
}
/* Post-processing: in particular, color conversion first */
if (!cinfo->raw_data_out) {
if (master->using_merged_upsample) {
jinit_merged_upsampler(cinfo); /* does color conversion too */
} else {
cinfo->m_ColorDeconverterPtr = new JPeg70::CColorDeconverter(cinfo);
jinit_upsampler(cinfo);
}
jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);
}
/* Inverse DCT */
jinit_inverse_dct(cinfo);
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
cinfo->FatalError(JPeg70::JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
jinit_phuff_decoder(cinfo);
} else
jinit_huff_decoder(cinfo);
}
/* Initialize principal buffer controllers. */
use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;
jinit_d_coef_controller(cinfo, use_c_buffer);
if (!cinfo->raw_data_out)
jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((JPeg70::CCommonManager *) cinfo);
/* Initialize input side of decompressor to consume first scan. */
(*cinfo->inputctl->start_input_pass) (cinfo);
/* If jpeg_start_decompress will read the whole file, initialize
* progress monitoring appropriately. The input step is counted
* as one pass.
*/
if (!cinfo->buffered_image &&
cinfo->inputctl->has_multiple_scans) {
int nscans;
/* Estimate number of scans to set pass_limit. */
if (cinfo->progressive_mode) {
/* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
nscans = 2 + 3 * cinfo->m_NumComponents;
} else {
/* For a nonprogressive multiscan file, estimate 1 scan per component. */
nscans = cinfo->m_NumComponents;
}
cinfo->m_PassCounter = 0;
cinfo->m_PassLimit = (Word) cinfo->total_iMCU_rows * nscans;
cinfo->m_CompletedPasses = 0;
cinfo->m_TotalPasses = (cinfo->enable_2pass_quant ? 3U : 2U);
/* Count the input pass as done */
master->pass_number++;
}
}
