FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2025-11-10 06:05:45
Exec Total Coverage
Lines: 169 181 93.4%
Functions: 7 7 100.0%
Branches: 32 44 72.7%
Line Branch Exec Source
1 /*
2 * AVCodecParameters functions for libavcodec
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * AVCodecParameters functions for libavcodec.
24 */
25
26 #include <string.h>
27 #include "libavutil/mem.h"
28 #include "avcodec.h"
29 #include "codec_par.h"
30 #include "packet.h"
31
32 266440 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 266440 av_freep(&par->extradata);
35 266440 av_channel_layout_uninit(&par->ch_layout);
36 266440 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 266440 memset(par, 0, sizeof(*par));
39
40 266440 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 266440 par->codec_id = AV_CODEC_ID_NONE;
42 266440 par->format = -1;
43 266440 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 266440 par->field_order = AV_FIELD_UNKNOWN;
45 266440 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 266440 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 266440 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 266440 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 266440 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 266440 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 266440 par->framerate = (AVRational){ 0, 1 };
52 266440 par->profile = AV_PROFILE_UNKNOWN;
53 266440 par->level = AV_LEVEL_UNKNOWN;
54 266440 par->alpha_mode = AVALPHA_MODE_UNSPECIFIED;
55 266440 }
56
57 89704 AVCodecParameters *avcodec_parameters_alloc(void)
58 {
59 89704 AVCodecParameters *par = av_mallocz(sizeof(*par));
60
61
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 89704 if (!par)
62 ✗ return NULL;
63 89704 codec_parameters_reset(par);
64 89704 return par;
65 }
66
67 1982619 void avcodec_parameters_free(AVCodecParameters **ppar)
68 {
69 1982619 AVCodecParameters *par = *ppar;
70
71
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 1982619 if (!par)
72 1892921 return;
73 89698 codec_parameters_reset(par);
74
75 89698 av_freep(ppar);
76 }
77
78 151943 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
79 const AVPacketSideData *src, int nb_src)
80 {
81 AVPacketSideData *dst;
82 151943 int nb_dst = *pnb_dst;
83
84
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 151943 if (!src)
85 144060 return 0;
86
87 7883 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
88
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 7883 if (!dst)
89 ✗ return AVERROR(ENOMEM);
90
91
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 16309 for (int i = 0; i < nb_src; i++) {
92 8426 const AVPacketSideData *src_sd = &src[i];
93 8426 AVPacketSideData *dst_sd = &dst[i];
94
95 8426 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
96
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 8426 if (!dst_sd->data)
97 ✗ return AVERROR(ENOMEM);
98
99 8426 dst_sd->type = src_sd->type;
100 8426 dst_sd->size = src_sd->size;
101 8426 *pnb_dst = ++nb_dst;
102 }
103
104 7883 return 0;
105 }
106
107 43526 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
108 {
109 int ret;
110
111 43526 codec_parameters_reset(dst);
112 43526 memcpy(dst, src, sizeof(*dst));
113
114 43526 dst->ch_layout = (AVChannelLayout){0};
115 43526 dst->extradata = NULL;
116 43526 dst->extradata_size = 0;
117 43526 dst->coded_side_data = NULL;
118 43526 dst->nb_coded_side_data = 0;
119
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 43526 if (src->extradata) {
120 6605 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
121
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 6605 if (!dst->extradata)
122 ✗ return AVERROR(ENOMEM);
123 6605 memcpy(dst->extradata, src->extradata, src->extradata_size);
124 6605 dst->extradata_size = src->extradata_size;
125 }
126 43526 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
127 43526 src->coded_side_data, src->nb_coded_side_data);
128
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 43526 if (ret < 0)
129 ✗ return ret;
130
131 43526 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
132
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 43526 if (ret < 0)
133 ✗ return ret;
134
135 43526 return 0;
136 }
137
138 43512 int avcodec_parameters_from_context(AVCodecParameters *par,
139 const AVCodecContext *codec)
140 {
141 int ret;
142
143 43512 codec_parameters_reset(par);
144
145 43512 par->codec_type = codec->codec_type;
146 43512 par->codec_id = codec->codec_id;
147 43512 par->codec_tag = codec->codec_tag;
148
149 43512 par->bit_rate = codec->bit_rate;
150 43512 par->bits_per_coded_sample = codec->bits_per_coded_sample;
151 43512 par->bits_per_raw_sample = codec->bits_per_raw_sample;
152 43512 par->profile = codec->profile;
153 43512 par->level = codec->level;
154
155
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 43512 switch (par->codec_type) {
156 34012 case AVMEDIA_TYPE_VIDEO:
157 34012 par->format = codec->pix_fmt;
158 34012 par->width = codec->width;
159 34012 par->height = codec->height;
160 34012 par->field_order = codec->field_order;
161 34012 par->color_range = codec->color_range;
162 34012 par->color_primaries = codec->color_primaries;
163 34012 par->color_trc = codec->color_trc;
164 34012 par->color_space = codec->colorspace;
165 34012 par->chroma_location = codec->chroma_sample_location;
166 34012 par->sample_aspect_ratio = codec->sample_aspect_ratio;
167 34012 par->video_delay = codec->has_b_frames;
168 34012 par->framerate = codec->framerate;
169 34012 par->alpha_mode = codec->alpha_mode;
170 34012 break;
171 8998 case AVMEDIA_TYPE_AUDIO:
172 8998 par->format = codec->sample_fmt;
173 8998 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
174
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 8998 if (ret < 0)
175 ✗ return ret;
176 8998 par->sample_rate = codec->sample_rate;
177 8998 par->block_align = codec->block_align;
178 8998 par->frame_size = codec->frame_size;
179 8998 par->initial_padding = codec->initial_padding;
180 8998 par->trailing_padding = codec->trailing_padding;
181 8998 par->seek_preroll = codec->seek_preroll;
182 8998 break;
183 412 case AVMEDIA_TYPE_SUBTITLE:
184 412 par->width = codec->width;
185 412 par->height = codec->height;
186 412 break;
187 }
188
189
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 43512 if (codec->extradata) {
190 7292 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
191
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 7292 if (!par->extradata)
192 ✗ return AVERROR(ENOMEM);
193 7292 memcpy(par->extradata, codec->extradata, codec->extradata_size);
194 7292 par->extradata_size = codec->extradata_size;
195 }
196
197 43512 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
198 43512 codec->coded_side_data, codec->nb_coded_side_data);
199
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 43512 if (ret < 0)
200 ✗ return ret;
201
202 43512 return 0;
203 }
204
205 64905 int avcodec_parameters_to_context(AVCodecContext *codec,
206 const AVCodecParameters *par)
207 {
208 int ret;
209
210 64905 codec->codec_type = par->codec_type;
211 64905 codec->codec_id = par->codec_id;
212 64905 codec->codec_tag = par->codec_tag;
213
214 64905 codec->bit_rate = par->bit_rate;
215 64905 codec->bits_per_coded_sample = par->bits_per_coded_sample;
216 64905 codec->bits_per_raw_sample = par->bits_per_raw_sample;
217 64905 codec->profile = par->profile;
218 64905 codec->level = par->level;
219
220
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 64905 switch (par->codec_type) {
221 52239 case AVMEDIA_TYPE_VIDEO:
222 52239 codec->pix_fmt = par->format;
223 52239 codec->width = par->width;
224 52239 codec->height = par->height;
225 52239 codec->field_order = par->field_order;
226 52239 codec->color_range = par->color_range;
227 52239 codec->color_primaries = par->color_primaries;
228 52239 codec->color_trc = par->color_trc;
229 52239 codec->colorspace = par->color_space;
230 52239 codec->chroma_sample_location = par->chroma_location;
231 52239 codec->sample_aspect_ratio = par->sample_aspect_ratio;
232 52239 codec->has_b_frames = par->video_delay;
233 52239 codec->framerate = par->framerate;
234 52239 codec->alpha_mode = par->alpha_mode;
235 52239 break;
236 11829 case AVMEDIA_TYPE_AUDIO:
237 11829 codec->sample_fmt = par->format;
238 11829 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
239
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 11829 if (ret < 0)
240 ✗ return ret;
241 11829 codec->sample_rate = par->sample_rate;
242 11829 codec->block_align = par->block_align;
243 11829 codec->frame_size = par->frame_size;
244 11829 codec->delay =
245 11829 codec->initial_padding = par->initial_padding;
246 11829 codec->trailing_padding = par->trailing_padding;
247 11829 codec->seek_preroll = par->seek_preroll;
248 11829 break;
249 561 case AVMEDIA_TYPE_SUBTITLE:
250 561 codec->width = par->width;
251 561 codec->height = par->height;
252 561 break;
253 }
254
255 64905 av_freep(&codec->extradata);
256 64905 codec->extradata_size = 0;
257
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 64905 if (par->extradata) {
258 9001 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
259
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 9001 if (!codec->extradata)
260 ✗ return AVERROR(ENOMEM);
261 9001 memcpy(codec->extradata, par->extradata, par->extradata_size);
262 9001 codec->extradata_size = par->extradata_size;
263 }
264
265 64905 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
266 64905 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
267 64905 par->coded_side_data, par->nb_coded_side_data);
268
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 64905 if (ret < 0)
269 ✗ return ret;
270
271 64905 return 0;
272 }
273