FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2026-09-19 08:35:40
Exec Total Coverage
Lines: 170 182 93.4%
Functions: 7 7 100.0%
Branches: 34 46 73.9%
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 283693 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 283693 av_freep(&par->extradata);
35 283693 av_channel_layout_uninit(&par->ch_layout);
36 283693 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 283693 memset(par, 0, sizeof(*par));
39
40 283693 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 283693 par->codec_id = AV_CODEC_ID_NONE;
42 283693 par->format = -1;
43 283693 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 283693 par->field_order = AV_FIELD_UNKNOWN;
45 283693 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 283693 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 283693 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 283693 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 283693 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 283693 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 283693 par->framerate = (AVRational){ 0, 1 };
52 283693 par->profile = AV_PROFILE_UNKNOWN;
53 283693 par->level = AV_LEVEL_UNKNOWN;
54 283693 par->alpha_mode = AVALPHA_MODE_UNSPECIFIED;
55 283693 }
56
57 95450 AVCodecParameters *avcodec_parameters_alloc(void)
58 {
59 95450 AVCodecParameters *par = av_mallocz(sizeof(*par));
60
61
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 95450 if (!par)
62 ✗ return NULL;
63 95450 codec_parameters_reset(par);
64 95450 return par;
65 }
66
67 2298176 void avcodec_parameters_free(AVCodecParameters **ppar)
68 {
69 2298176 AVCodecParameters *par = *ppar;
70
71
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 2298176 if (!par)
72 2202732 return;
73 95444 codec_parameters_reset(par);
74
75 95444 av_freep(ppar);
76 }
77
78 161845 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
79 const AVPacketSideData *src, int nb_src)
80 {
81 AVPacketSideData *dst;
82 161845 int nb_dst = *pnb_dst;
83
84
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 161845 if (!src)
85 153047 return 0;
86
87 8798 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
88
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 8798 if (!dst)
89 ✗ return AVERROR(ENOMEM);
90
91
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 18720 for (int i = 0; i < nb_src; i++) {
92 9922 const AVPacketSideData *src_sd = &src[i];
93 9922 AVPacketSideData *dst_sd = &dst[i];
94
95 9922 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
96
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 9922 if (!dst_sd->data)
97 ✗ return AVERROR(ENOMEM);
98
99 9922 dst_sd->type = src_sd->type;
100 9922 dst_sd->size = src_sd->size;
101 9922 *pnb_dst = ++nb_dst;
102 }
103
104 8798 return 0;
105 }
106
107 46535 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
108 {
109 int ret;
110
111 46535 codec_parameters_reset(dst);
112 46535 memcpy(dst, src, sizeof(*dst));
113
114 46535 dst->ch_layout = (AVChannelLayout){0};
115 46535 dst->extradata = NULL;
116 46535 dst->extradata_size = 0;
117 46535 dst->coded_side_data = NULL;
118 46535 dst->nb_coded_side_data = 0;
119
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 46535 if (src->extradata) {
120 7566 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
121
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 7566 if (!dst->extradata)
122 ✗ return AVERROR(ENOMEM);
123 7566 memcpy(dst->extradata, src->extradata, src->extradata_size);
124 7566 dst->extradata_size = src->extradata_size;
125 }
126 46535 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
127 46535 src->coded_side_data, src->nb_coded_side_data);
128
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 46535 if (ret < 0)
129 ✗ return ret;
130
131 46535 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
132
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 46535 if (ret < 0)
133 ✗ return ret;
134
135 46535 return 0;
136 }
137
138 46264 int avcodec_parameters_from_context(AVCodecParameters *par,
139 const AVCodecContext *codec)
140 {
141 int ret;
142
143 46264 codec_parameters_reset(par);
144
145 46264 par->codec_type = codec->codec_type;
146 46264 par->codec_id = codec->codec_id;
147 46264 par->codec_tag = codec->codec_tag;
148
149 46264 par->bit_rate = codec->bit_rate;
150 46264 par->bits_per_coded_sample = codec->bits_per_coded_sample;
151 46264 par->bits_per_raw_sample = codec->bits_per_raw_sample;
152 46264 par->profile = codec->profile;
153 46264 par->level = codec->level;
154
155
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 46264 switch (par->codec_type) {
156 35010 case AVMEDIA_TYPE_VIDEO:
157 70020 par->format = codec->sw_pix_fmt != AV_PIX_FMT_NONE ?
158
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 35010 codec->sw_pix_fmt : codec->pix_fmt;
159 35010 par->width = codec->width;
160 35010 par->height = codec->height;
161 35010 par->field_order = codec->field_order;
162 35010 par->color_range = codec->color_range;
163 35010 par->color_primaries = codec->color_primaries;
164 35010 par->color_trc = codec->color_trc;
165 35010 par->color_space = codec->colorspace;
166 35010 par->chroma_location = codec->chroma_sample_location;
167 35010 par->sample_aspect_ratio = codec->sample_aspect_ratio;
168 35010 par->video_delay = codec->has_b_frames;
169 35010 par->framerate = codec->framerate;
170 35010 par->alpha_mode = codec->alpha_mode;
171 35010 break;
172 10723 case AVMEDIA_TYPE_AUDIO:
173 10723 par->format = codec->sample_fmt;
174 10723 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
175
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 10723 if (ret < 0)
176 ✗ return ret;
177 10723 par->sample_rate = codec->sample_rate;
178 10723 par->block_align = codec->block_align;
179 10723 par->frame_size = codec->frame_size;
180 10723 par->initial_padding = codec->initial_padding;
181 10723 par->trailing_padding = codec->trailing_padding;
182 10723 par->seek_preroll = codec->seek_preroll;
183 10723 break;
184 416 case AVMEDIA_TYPE_SUBTITLE:
185 416 par->width = codec->width;
186 416 par->height = codec->height;
187 416 break;
188 }
189
190
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 46264 if (codec->extradata) {
191 8245 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
192
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 8245 if (!par->extradata)
193 ✗ return AVERROR(ENOMEM);
194 8245 memcpy(par->extradata, codec->extradata, codec->extradata_size);
195 8245 par->extradata_size = codec->extradata_size;
196 }
197
198 46264 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
199 46264 codec->coded_side_data, codec->nb_coded_side_data);
200
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 46264 if (ret < 0)
201 ✗ return ret;
202
203 46264 return 0;
204 }
205
206 69046 int avcodec_parameters_to_context(AVCodecContext *codec,
207 const AVCodecParameters *par)
208 {
209 int ret;
210
211 69046 codec->codec_type = par->codec_type;
212 69046 codec->codec_id = par->codec_id;
213 69046 codec->codec_tag = par->codec_tag;
214
215 69046 codec->bit_rate = par->bit_rate;
216 69046 codec->bits_per_coded_sample = par->bits_per_coded_sample;
217 69046 codec->bits_per_raw_sample = par->bits_per_raw_sample;
218 69046 codec->profile = par->profile;
219 69046 codec->level = par->level;
220
221
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 69046 switch (par->codec_type) {
222 53927 case AVMEDIA_TYPE_VIDEO:
223 53927 codec->pix_fmt = par->format;
224 53927 codec->width = par->width;
225 53927 codec->height = par->height;
226 53927 codec->field_order = par->field_order;
227 53927 codec->color_range = par->color_range;
228 53927 codec->color_primaries = par->color_primaries;
229 53927 codec->color_trc = par->color_trc;
230 53927 codec->colorspace = par->color_space;
231 53927 codec->chroma_sample_location = par->chroma_location;
232 53927 codec->sample_aspect_ratio = par->sample_aspect_ratio;
233 53927 codec->has_b_frames = par->video_delay;
234 53927 codec->framerate = par->framerate;
235 53927 codec->alpha_mode = par->alpha_mode;
236 53927 break;
237 14197 case AVMEDIA_TYPE_AUDIO:
238 14197 codec->sample_fmt = par->format;
239 14197 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
240
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 14197 if (ret < 0)
241 ✗ return ret;
242 14197 codec->sample_rate = par->sample_rate;
243 14197 codec->block_align = par->block_align;
244 14197 codec->frame_size = par->frame_size;
245 14197 codec->delay =
246 14197 codec->initial_padding = par->initial_padding;
247 14197 codec->trailing_padding = par->trailing_padding;
248 14197 codec->seek_preroll = par->seek_preroll;
249 14197 break;
250 567 case AVMEDIA_TYPE_SUBTITLE:
251 567 codec->width = par->width;
252 567 codec->height = par->height;
253 567 break;
254 }
255
256 69046 av_freep(&codec->extradata);
257 69046 codec->extradata_size = 0;
258
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 69046 if (par->extradata) {
259 10328 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
260
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 10328 if (!codec->extradata)
261 ✗ return AVERROR(ENOMEM);
262 10328 memcpy(codec->extradata, par->extradata, par->extradata_size);
263 10328 codec->extradata_size = par->extradata_size;
264 }
265
266 69046 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
267 69046 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
268 69046 par->coded_side_data, par->nb_coded_side_data);
269
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 69046 if (ret < 0)
270 ✗ return ret;
271
272 69046 return 0;
273 }
274