/src/libjpeg-turbo.dev/src/jcomapi.c

Source
/*
 * jcomapi.c
 *
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1994-1997, Thomas G. Lane.
 * libjpeg-turbo Modifications:
 * Copyright (C) 2024-2026, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
 * This file contains application interface routines that are used for both
 * compression and decompression.
 */

#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#ifdef WITH_PROFILE
#include <stdio.h>
#include "tjutil.h"
#endif


/*
 * Abort processing of a JPEG compression or decompression operation,
 * but don't destroy the object itself.
 *
 * For this, we merely clean up all the nonpermanent memory pools.
 * Note that temp files (virtual arrays) are not allowed to belong to
 * the permanent pool, so we will be able to close all temp files here.
 * Closing a data source or destination, if necessary, is the application's
 * responsibility.
 */

GLOBAL(void)
jpeg_abort(j_common_ptr cinfo)
{
  int pool;

  /* Do nothing if called on a not-initialized or destroyed JPEG object. */
  if (cinfo->mem == NULL)
    return;

  /* Releasing pools in reverse order might help avoid fragmentation
   * with some (brain-damaged) malloc libraries.
   */
  for (pool = JPOOL_NUMPOOLS - 1; pool > JPOOL_PERMANENT; pool--) {
    (*cinfo->mem->free_pool) (cinfo, pool);
  }

  /* Reset overall state for possible reuse of object */
  if (cinfo->is_decompressor) {
    cinfo->global_state = DSTATE_START;
    /* Try to keep application from accessing now-deleted marker list.
     * A bit kludgy to do it here, but this is the most central place.
     */
    ((j_decompress_ptr)cinfo)->marker_list = NULL;
    ((j_decompress_ptr)cinfo)->master->marker_list_end = NULL;
  } else {
    cinfo->global_state = CSTATE_START;
  }

#ifdef WITH_PROFILE
  if (cinfo->is_decompressor)
    ((j_decompress_ptr)cinfo)->master->total_elapsed +=
      getTime() - ((j_decompress_ptr)cinfo)->master->total_start;
  else
    ((j_compress_ptr)cinfo)->master->total_elapsed +=
      getTime() - ((j_compress_ptr)cinfo)->master->total_start;
#endif
}


/*
 * Destruction of a JPEG object.
 *
 * Everything gets deallocated except the master jpeg_compress_struct itself
 * and the error manager struct.  Both of these are supplied by the application
 * and must be freed, if necessary, by the application.  (Often they are on
 * the stack and so don't need to be freed anyway.)
 * Closing a data source or destination, if necessary, is the application's
 * responsibility.
 */

GLOBAL(void)
jpeg_destroy(j_common_ptr cinfo)
{
#ifdef WITH_PROFILE
  if (cinfo->is_decompressor) {
    j_decompress_ptr dinfo = (j_decompress_ptr)cinfo;

    if (dinfo->master->entropy_mcoeffs > 0.0) {
      fprintf(stderr, "Entropy decoding:    %14.6f Mcoefficients/sec",
              dinfo->master->entropy_mcoeffs / dinfo->master->entropy_elapsed);
      if (dinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "  (%5.2f%% of total time)",
                dinfo->master->entropy_elapsed * 100.0 /
                  dinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (dinfo->master->idct_mcoeffs > 0.0) {
      fprintf(stderr, "Inverse DCT:         %14.6f Mcoefficients/sec",
              dinfo->master->idct_mcoeffs / dinfo->master->idct_elapsed);
      if (dinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "  (%5.2f%% of total time)",
                dinfo->master->idct_elapsed * 100.0 /
                  dinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (dinfo->master->merged_upsample_mpixels > 0.0) {
      fprintf(stderr, "Merged upsampling:   %14.6f Mpixels/sec",
              dinfo->master->merged_upsample_mpixels /
                dinfo->master->merged_upsample_elapsed);
      if (dinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "        (%5.2f%% of total time)",
                dinfo->master->merged_upsample_elapsed * 100.0 /
                  dinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (dinfo->master->upsample_msamples > 0.0) {
      fprintf(stderr, "Upsampling:          %14.6f Msamples/sec",
              dinfo->master->upsample_msamples /
                dinfo->master->upsample_elapsed);
      if (dinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "       (%5.2f%% of total time)",
                dinfo->master->upsample_elapsed * 100.0 /
                  dinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (dinfo->master->cconvert_mpixels > 0.0) {
      fprintf(stderr, "Color deconversion:  %14.6f Mpixels/sec",
              dinfo->master->cconvert_mpixels /
                dinfo->master->cconvert_elapsed);
      if (dinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "        (%5.2f%% of total time)",
                dinfo->master->cconvert_elapsed * 100.0 /
                  dinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
  } else {
    j_compress_ptr _cinfo = (j_compress_ptr)cinfo;

    if (_cinfo->master->cconvert_mpixels > 0.0) {
      fprintf(stderr, "Color conversion:    %14.6f Mpixels/sec",
              _cinfo->master->cconvert_mpixels /
                _cinfo->master->cconvert_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "        (%5.2f%% of total time)",
                _cinfo->master->cconvert_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (_cinfo->master->downsample_msamples > 0.0) {
      fprintf(stderr, "Downsampling:        %14.6f Msamples/sec",
              _cinfo->master->downsample_msamples /
                _cinfo->master->downsample_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "       (%5.2f%% of total time)",
                _cinfo->master->downsample_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (_cinfo->master->convsamp_msamples > 0.0) {
      fprintf(stderr, "Sample conversion:   %14.6f Msamples/sec",
              _cinfo->master->convsamp_msamples /
                _cinfo->master->convsamp_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "       (%5.2f%% of total time)",
                _cinfo->master->convsamp_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (_cinfo->master->fdct_mcoeffs > 0.0) {
      fprintf(stderr, "Forward DCT:         %14.6f Mcoefficients/sec",
              _cinfo->master->fdct_mcoeffs / _cinfo->master->fdct_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "  (%5.2f%% of total time)",
                _cinfo->master->fdct_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (_cinfo->master->quantize_mcoeffs > 0.0) {
      fprintf(stderr, "Quantization:        %14.6f Mcoefficients/sec",
              _cinfo->master->quantize_mcoeffs /
                _cinfo->master->quantize_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "  (%5.2f%% of total time)",
                _cinfo->master->quantize_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
    if (_cinfo->master->entropy_mcoeffs > 0.0) {
      fprintf(stderr, "Entropy encoding:    %14.6f Mcoefficients/sec",
              _cinfo->master->entropy_mcoeffs /
                _cinfo->master->entropy_elapsed);
      if (_cinfo->master->total_elapsed > 0.0)
        fprintf(stderr, "  (%5.2f%% of total time)",
                _cinfo->master->entropy_elapsed * 100.0 /
                  _cinfo->master->total_elapsed);
      fprintf(stderr, "\n");
    }
  }
#endif

  /* We need only tell the memory manager to release everything. */
  /* NB: mem pointer is NULL if memory mgr failed to initialize. */
  if (cinfo->mem != NULL)
    (*cinfo->mem->self_destruct) (cinfo);
  cinfo->mem = NULL;            /* be safe if jpeg_destroy is called twice */
  cinfo->global_state = 0;      /* mark it destroyed */
}


/*
 * Convenience routines for allocating quantization and Huffman tables.
 * (Would jutils.c be a more reasonable place to put these?)
 */

GLOBAL(JQUANT_TBL *)
jpeg_alloc_quant_table(j_common_ptr cinfo)
{
  JQUANT_TBL *tbl;

  tbl = (JQUANT_TBL *)
    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JQUANT_TBL));
  tbl->sent_table = FALSE;      /* make sure this is false in any new table */
  return tbl;
}


GLOBAL(JHUFF_TBL *)
jpeg_alloc_huff_table(j_common_ptr cinfo)
{
  JHUFF_TBL *tbl;

  tbl = (JHUFF_TBL *)
    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JHUFF_TBL));
  tbl->sent_table = FALSE;      /* make sure this is false in any new table */
  return tbl;
}

Coverage Report

Created: 2026-02-26 07:10

Line	Count	Source
1		/*
2		* jcomapi.c
3		*
4		* This file was part of the Independent JPEG Group's software:
5		* Copyright (C) 1994-1997, Thomas G. Lane.
6		* libjpeg-turbo Modifications:
7		* Copyright (C) 2024-2026, D. R. Commander.
8		* For conditions of distribution and use, see the accompanying README.ijg
9		* file.
10		*
11		* This file contains application interface routines that are used for both
12		* compression and decompression.
13		*/
14
15		#define JPEG_INTERNALS
16		#include "jinclude.h"
17		#include "jpeglib.h"
18		#ifdef WITH_PROFILE
19		#include <stdio.h>
20		#include "tjutil.h"
21		#endif
22
23
24		/*
25		* Abort processing of a JPEG compression or decompression operation,
26		* but don't destroy the object itself.
27		*
28		* For this, we merely clean up all the nonpermanent memory pools.
29		* Note that temp files (virtual arrays) are not allowed to belong to
30		* the permanent pool, so we will be able to close all temp files here.
31		* Closing a data source or destination, if necessary, is the application's
32		* responsibility.
33		*/
34
35		GLOBAL(void)
36		jpeg_abort(j_common_ptr cinfo)
37	22.5k	{
38	22.5k	int pool;
39
40		/* Do nothing if called on a not-initialized or destroyed JPEG object. */
41	22.5k	if (cinfo->mem == NULL)
42	0	return;
43
44		/* Releasing pools in reverse order might help avoid fragmentation
45		* with some (brain-damaged) malloc libraries.
46		*/
47	45.0k	for (pool = JPOOL_NUMPOOLS - 1; pool > JPOOL_PERMANENT; pool--) {
48	22.5k	(*cinfo->mem->free_pool) (cinfo, pool);
49	22.5k	}
50
51		/* Reset overall state for possible reuse of object */
52	22.5k	if (cinfo->is_decompressor) {
53	22.5k	cinfo->global_state = DSTATE_START;
54		/* Try to keep application from accessing now-deleted marker list.
55		* A bit kludgy to do it here, but this is the most central place.
56		*/
57	22.5k	((j_decompress_ptr)cinfo)->marker_list = NULL;
58	22.5k	((j_decompress_ptr)cinfo)->master->marker_list_end = NULL;
59	22.5k	} else {
60	0	cinfo->global_state = CSTATE_START;
61	0	}
62
63		#ifdef WITH_PROFILE
64		if (cinfo->is_decompressor)
65		((j_decompress_ptr)cinfo)->master->total_elapsed +=
66		getTime() - ((j_decompress_ptr)cinfo)->master->total_start;
67		else
68		((j_compress_ptr)cinfo)->master->total_elapsed +=
69		getTime() - ((j_compress_ptr)cinfo)->master->total_start;
70		#endif
71	22.5k	}
72
73
74		/*
75		* Destruction of a JPEG object.
76		*
77		* Everything gets deallocated except the master jpeg_compress_struct itself
78		* and the error manager struct. Both of these are supplied by the application
79		* and must be freed, if necessary, by the application. (Often they are on
80		* the stack and so don't need to be freed anyway.)
81		* Closing a data source or destination, if necessary, is the application's
82		* responsibility.
83		*/
84
85		GLOBAL(void)
86		jpeg_destroy(j_common_ptr cinfo)
87	6.05k	{
88		#ifdef WITH_PROFILE
89		if (cinfo->is_decompressor) {
90		j_decompress_ptr dinfo = (j_decompress_ptr)cinfo;
91
92		if (dinfo->master->entropy_mcoeffs > 0.0) {
93		fprintf(stderr, "Entropy decoding: %14.6f Mcoefficients/sec",
94		dinfo->master->entropy_mcoeffs / dinfo->master->entropy_elapsed);
95		if (dinfo->master->total_elapsed > 0.0)
96		fprintf(stderr, " (%5.2f%% of total time)",
97		dinfo->master->entropy_elapsed * 100.0 /
98		dinfo->master->total_elapsed);
99		fprintf(stderr, "\n");
100		}
101		if (dinfo->master->idct_mcoeffs > 0.0) {
102		fprintf(stderr, "Inverse DCT: %14.6f Mcoefficients/sec",
103		dinfo->master->idct_mcoeffs / dinfo->master->idct_elapsed);
104		if (dinfo->master->total_elapsed > 0.0)
105		fprintf(stderr, " (%5.2f%% of total time)",
106		dinfo->master->idct_elapsed * 100.0 /
107		dinfo->master->total_elapsed);
108		fprintf(stderr, "\n");
109		}
110		if (dinfo->master->merged_upsample_mpixels > 0.0) {
111		fprintf(stderr, "Merged upsampling: %14.6f Mpixels/sec",
112		dinfo->master->merged_upsample_mpixels /
113		dinfo->master->merged_upsample_elapsed);
114		if (dinfo->master->total_elapsed > 0.0)
115		fprintf(stderr, " (%5.2f%% of total time)",
116		dinfo->master->merged_upsample_elapsed * 100.0 /
117		dinfo->master->total_elapsed);
118		fprintf(stderr, "\n");
119		}
120		if (dinfo->master->upsample_msamples > 0.0) {
121		fprintf(stderr, "Upsampling: %14.6f Msamples/sec",
122		dinfo->master->upsample_msamples /
123		dinfo->master->upsample_elapsed);
124		if (dinfo->master->total_elapsed > 0.0)
125		fprintf(stderr, " (%5.2f%% of total time)",
126		dinfo->master->upsample_elapsed * 100.0 /
127		dinfo->master->total_elapsed);
128		fprintf(stderr, "\n");
129		}
130		if (dinfo->master->cconvert_mpixels > 0.0) {
131		fprintf(stderr, "Color deconversion: %14.6f Mpixels/sec",
132		dinfo->master->cconvert_mpixels /
133		dinfo->master->cconvert_elapsed);
134		if (dinfo->master->total_elapsed > 0.0)
135		fprintf(stderr, " (%5.2f%% of total time)",
136		dinfo->master->cconvert_elapsed * 100.0 /
137		dinfo->master->total_elapsed);
138		fprintf(stderr, "\n");
139		}
140		} else {
141		j_compress_ptr _cinfo = (j_compress_ptr)cinfo;
142
143		if (_cinfo->master->cconvert_mpixels > 0.0) {
144		fprintf(stderr, "Color conversion: %14.6f Mpixels/sec",
145		_cinfo->master->cconvert_mpixels /
146		_cinfo->master->cconvert_elapsed);
147		if (_cinfo->master->total_elapsed > 0.0)
148		fprintf(stderr, " (%5.2f%% of total time)",
149		_cinfo->master->cconvert_elapsed * 100.0 /
150		_cinfo->master->total_elapsed);
151		fprintf(stderr, "\n");
152		}
153		if (_cinfo->master->downsample_msamples > 0.0) {
154		fprintf(stderr, "Downsampling: %14.6f Msamples/sec",
155		_cinfo->master->downsample_msamples /
156		_cinfo->master->downsample_elapsed);
157		if (_cinfo->master->total_elapsed > 0.0)
158		fprintf(stderr, " (%5.2f%% of total time)",
159		_cinfo->master->downsample_elapsed * 100.0 /
160		_cinfo->master->total_elapsed);
161		fprintf(stderr, "\n");
162		}
163		if (_cinfo->master->convsamp_msamples > 0.0) {
164		fprintf(stderr, "Sample conversion: %14.6f Msamples/sec",
165		_cinfo->master->convsamp_msamples /
166		_cinfo->master->convsamp_elapsed);
167		if (_cinfo->master->total_elapsed > 0.0)
168		fprintf(stderr, " (%5.2f%% of total time)",
169		_cinfo->master->convsamp_elapsed * 100.0 /
170		_cinfo->master->total_elapsed);
171		fprintf(stderr, "\n");
172		}
173		if (_cinfo->master->fdct_mcoeffs > 0.0) {
174		fprintf(stderr, "Forward DCT: %14.6f Mcoefficients/sec",
175		_cinfo->master->fdct_mcoeffs / _cinfo->master->fdct_elapsed);
176		if (_cinfo->master->total_elapsed > 0.0)
177		fprintf(stderr, " (%5.2f%% of total time)",
178		_cinfo->master->fdct_elapsed * 100.0 /
179		_cinfo->master->total_elapsed);
180		fprintf(stderr, "\n");
181		}
182		if (_cinfo->master->quantize_mcoeffs > 0.0) {
183		fprintf(stderr, "Quantization: %14.6f Mcoefficients/sec",
184		_cinfo->master->quantize_mcoeffs /
185		_cinfo->master->quantize_elapsed);
186		if (_cinfo->master->total_elapsed > 0.0)
187		fprintf(stderr, " (%5.2f%% of total time)",
188		_cinfo->master->quantize_elapsed * 100.0 /
189		_cinfo->master->total_elapsed);
190		fprintf(stderr, "\n");
191		}
192		if (_cinfo->master->entropy_mcoeffs > 0.0) {
193		fprintf(stderr, "Entropy encoding: %14.6f Mcoefficients/sec",
194		_cinfo->master->entropy_mcoeffs /
195		_cinfo->master->entropy_elapsed);
196		if (_cinfo->master->total_elapsed > 0.0)
197		fprintf(stderr, " (%5.2f%% of total time)",
198		_cinfo->master->entropy_elapsed * 100.0 /
199		_cinfo->master->total_elapsed);
200		fprintf(stderr, "\n");
201		}
202		}
203		#endif
204
205		/* We need only tell the memory manager to release everything. */
206		/* NB: mem pointer is NULL if memory mgr failed to initialize. */
207	6.05k	if (cinfo->mem != NULL)
208	6.05k	(*cinfo->mem->self_destruct) (cinfo);
209	6.05k	cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */
210	6.05k	cinfo->global_state = 0; /* mark it destroyed */
211	6.05k	}
212
213
214		/*
215		* Convenience routines for allocating quantization and Huffman tables.
216		* (Would jutils.c be a more reasonable place to put these?)
217		*/
218
219		GLOBAL(JQUANT_TBL *)
220		jpeg_alloc_quant_table(j_common_ptr cinfo)
221	3.51k	{
222	3.51k	JQUANT_TBL *tbl;
223
224	3.51k	tbl = (JQUANT_TBL *)
225	3.51k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JQUANT_TBL));
226	3.51k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
227	3.51k	return tbl;
228	3.51k	}
229
230
231		GLOBAL(JHUFF_TBL *)
232		jpeg_alloc_huff_table(j_common_ptr cinfo)
233	6.86k	{
234	6.86k	JHUFF_TBL *tbl;
235
236	6.86k	tbl = (JHUFF_TBL *)
237	6.86k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JHUFF_TBL));
238	6.86k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
239	6.86k	return tbl;
240	6.86k	}