/src/libjpeg-turbo/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) {
    if (((j_decompress_ptr)cinfo)->master->total_start > 0.0)
      ((j_decompress_ptr)cinfo)->master->total_elapsed +=
        getTime() - ((j_decompress_ptr)cinfo)->master->total_start;
  } else {
    if (((j_compress_ptr)cinfo)->master->total_start > 0.0)
      ((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: 2026-04-12 07:01

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	2.30k	{
38	2.30k	int pool;
39
40		/* Do nothing if called on a not-initialized or destroyed JPEG object. */
41	2.30k	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	4.60k	for (pool = JPOOL_NUMPOOLS - 1; pool > JPOOL_PERMANENT; pool--) {
48	2.30k	(*cinfo->mem->free_pool) (cinfo, pool);
49	2.30k	}
50
51		/* Reset overall state for possible reuse of object */
52	2.30k	if (cinfo->is_decompressor) {
53	2.30k	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	2.30k	((j_decompress_ptr)cinfo)->marker_list = NULL;
58	2.30k	((j_decompress_ptr)cinfo)->master->marker_list_end = NULL;
59	2.30k	} else {
60	0	cinfo->global_state = CSTATE_START;
61	0	}
62
63		#ifdef WITH_PROFILE
64		if (cinfo->is_decompressor) {
65		if (((j_decompress_ptr)cinfo)->master->total_start > 0.0)
66		((j_decompress_ptr)cinfo)->master->total_elapsed +=
67		getTime() - ((j_decompress_ptr)cinfo)->master->total_start;
68		} else {
69		if (((j_compress_ptr)cinfo)->master->total_start > 0.0)
70		((j_compress_ptr)cinfo)->master->total_elapsed +=
71		getTime() - ((j_compress_ptr)cinfo)->master->total_start;
72		}
73		#endif
74	2.30k	}
75
76
77		/*
78		* Destruction of a JPEG object.
79		*
80		* Everything gets deallocated except the master jpeg_compress_struct itself
81		* and the error manager struct. Both of these are supplied by the application
82		* and must be freed, if necessary, by the application. (Often they are on
83		* the stack and so don't need to be freed anyway.)
84		* Closing a data source or destination, if necessary, is the application's
85		* responsibility.
86		*/
87
88		GLOBAL(void)
89		jpeg_destroy(j_common_ptr cinfo)
90	6.71k	{
91		#ifdef WITH_PROFILE
92		if (cinfo->is_decompressor) {
93		j_decompress_ptr dinfo = (j_decompress_ptr)cinfo;
94
95		if (dinfo->master->entropy_mcoeffs > 0.0) {
96		fprintf(stderr, "Entropy decoding: %14.6f Mcoefficients/sec",
97		dinfo->master->entropy_mcoeffs / dinfo->master->entropy_elapsed);
98		if (dinfo->master->total_elapsed > 0.0)
99		fprintf(stderr, " (%5.2f%% of total time)",
100		dinfo->master->entropy_elapsed * 100.0 /
101		dinfo->master->total_elapsed);
102		fprintf(stderr, "\n");
103		}
104		if (dinfo->master->idct_mcoeffs > 0.0) {
105		fprintf(stderr, "Inverse DCT: %14.6f Mcoefficients/sec",
106		dinfo->master->idct_mcoeffs / dinfo->master->idct_elapsed);
107		if (dinfo->master->total_elapsed > 0.0)
108		fprintf(stderr, " (%5.2f%% of total time)",
109		dinfo->master->idct_elapsed * 100.0 /
110		dinfo->master->total_elapsed);
111		fprintf(stderr, "\n");
112		}
113		if (dinfo->master->merged_upsample_mpixels > 0.0) {
114		fprintf(stderr, "Merged upsampling: %14.6f Mpixels/sec",
115		dinfo->master->merged_upsample_mpixels /
116		dinfo->master->merged_upsample_elapsed);
117		if (dinfo->master->total_elapsed > 0.0)
118		fprintf(stderr, " (%5.2f%% of total time)",
119		dinfo->master->merged_upsample_elapsed * 100.0 /
120		dinfo->master->total_elapsed);
121		fprintf(stderr, "\n");
122		}
123		if (dinfo->master->upsample_msamples > 0.0) {
124		fprintf(stderr, "Upsampling: %14.6f Msamples/sec",
125		dinfo->master->upsample_msamples /
126		dinfo->master->upsample_elapsed);
127		if (dinfo->master->total_elapsed > 0.0)
128		fprintf(stderr, " (%5.2f%% of total time)",
129		dinfo->master->upsample_elapsed * 100.0 /
130		dinfo->master->total_elapsed);
131		fprintf(stderr, "\n");
132		}
133		if (dinfo->master->cconvert_mpixels > 0.0) {
134		fprintf(stderr, "Color deconversion: %14.6f Mpixels/sec",
135		dinfo->master->cconvert_mpixels /
136		dinfo->master->cconvert_elapsed);
137		if (dinfo->master->total_elapsed > 0.0)
138		fprintf(stderr, " (%5.2f%% of total time)",
139		dinfo->master->cconvert_elapsed * 100.0 /
140		dinfo->master->total_elapsed);
141		fprintf(stderr, "\n");
142		}
143		} else {
144		j_compress_ptr _cinfo = (j_compress_ptr)cinfo;
145
146		if (_cinfo->master->cconvert_mpixels > 0.0) {
147		fprintf(stderr, "Color conversion: %14.6f Mpixels/sec",
148		_cinfo->master->cconvert_mpixels /
149		_cinfo->master->cconvert_elapsed);
150		if (_cinfo->master->total_elapsed > 0.0)
151		fprintf(stderr, " (%5.2f%% of total time)",
152		_cinfo->master->cconvert_elapsed * 100.0 /
153		_cinfo->master->total_elapsed);
154		fprintf(stderr, "\n");
155		}
156		if (_cinfo->master->downsample_msamples > 0.0) {
157		fprintf(stderr, "Downsampling: %14.6f Msamples/sec",
158		_cinfo->master->downsample_msamples /
159		_cinfo->master->downsample_elapsed);
160		if (_cinfo->master->total_elapsed > 0.0)
161		fprintf(stderr, " (%5.2f%% of total time)",
162		_cinfo->master->downsample_elapsed * 100.0 /
163		_cinfo->master->total_elapsed);
164		fprintf(stderr, "\n");
165		}
166		if (_cinfo->master->convsamp_msamples > 0.0) {
167		fprintf(stderr, "Sample conversion: %14.6f Msamples/sec",
168		_cinfo->master->convsamp_msamples /
169		_cinfo->master->convsamp_elapsed);
170		if (_cinfo->master->total_elapsed > 0.0)
171		fprintf(stderr, " (%5.2f%% of total time)",
172		_cinfo->master->convsamp_elapsed * 100.0 /
173		_cinfo->master->total_elapsed);
174		fprintf(stderr, "\n");
175		}
176		if (_cinfo->master->fdct_mcoeffs > 0.0) {
177		fprintf(stderr, "Forward DCT: %14.6f Mcoefficients/sec",
178		_cinfo->master->fdct_mcoeffs / _cinfo->master->fdct_elapsed);
179		if (_cinfo->master->total_elapsed > 0.0)
180		fprintf(stderr, " (%5.2f%% of total time)",
181		_cinfo->master->fdct_elapsed * 100.0 /
182		_cinfo->master->total_elapsed);
183		fprintf(stderr, "\n");
184		}
185		if (_cinfo->master->quantize_mcoeffs > 0.0) {
186		fprintf(stderr, "Quantization: %14.6f Mcoefficients/sec",
187		_cinfo->master->quantize_mcoeffs /
188		_cinfo->master->quantize_elapsed);
189		if (_cinfo->master->total_elapsed > 0.0)
190		fprintf(stderr, " (%5.2f%% of total time)",
191		_cinfo->master->quantize_elapsed * 100.0 /
192		_cinfo->master->total_elapsed);
193		fprintf(stderr, "\n");
194		}
195		if (_cinfo->master->entropy_mcoeffs > 0.0) {
196		fprintf(stderr, "Entropy encoding: %14.6f Mcoefficients/sec",
197		_cinfo->master->entropy_mcoeffs /
198		_cinfo->master->entropy_elapsed);
199		if (_cinfo->master->total_elapsed > 0.0)
200		fprintf(stderr, " (%5.2f%% of total time)",
201		_cinfo->master->entropy_elapsed * 100.0 /
202		_cinfo->master->total_elapsed);
203		fprintf(stderr, "\n");
204		}
205		}
206		#endif
207
208		/* We need only tell the memory manager to release everything. */
209		/* NB: mem pointer is NULL if memory mgr failed to initialize. */
210	6.71k	if (cinfo->mem != NULL)
211	6.71k	(*cinfo->mem->self_destruct) (cinfo);
212	6.71k	cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */
213	6.71k	cinfo->global_state = 0; /* mark it destroyed */
214	6.71k	}
215
216
217		/*
218		* Convenience routines for allocating quantization and Huffman tables.
219		* (Would jutils.c be a more reasonable place to put these?)
220		*/
221
222		GLOBAL(JQUANT_TBL *)
223		jpeg_alloc_quant_table(j_common_ptr cinfo)
224	9.75k	{
225	9.75k	JQUANT_TBL *tbl;
226
227	9.75k	tbl = (JQUANT_TBL *)
228	9.75k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JQUANT_TBL));
229	9.75k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
230	9.75k	return tbl;
231	9.75k	}
232
233
234		GLOBAL(JHUFF_TBL *)
235		jpeg_alloc_huff_table(j_common_ptr cinfo)
236	13.8k	{
237	13.8k	JHUFF_TBL *tbl;
238
239	13.8k	tbl = (JHUFF_TBL *)
240	13.8k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, sizeof(JHUFF_TBL));
241	13.8k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
242	13.8k	return tbl;
243	13.8k	}