FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2026-08-15 14:54:27
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 276827 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 276827 av_freep(&par->extradata);
35 276827 av_channel_layout_uninit(&par->ch_layout);
36 276827 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 276827 memset(par, 0, sizeof(*par));
39
40 276827 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 276827 par->codec_id = AV_CODEC_ID_NONE;
42 276827 par->format = -1;
43 276827 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 276827 par->field_order = AV_FIELD_UNKNOWN;
45 276827 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 276827 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 276827 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 276827 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 276827 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 276827 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 276827 par->framerate = (AVRational){ 0, 1 };
52 276827 par->profile = AV_PROFILE_UNKNOWN;
53 276827 par->level = AV_LEVEL_UNKNOWN;
54 276827 par->alpha_mode = AVALPHA_MODE_UNSPECIFIED;
55 276827 }
56
57 93169 AVCodecParameters *avcodec_parameters_alloc(void)
58 {
59 93169 AVCodecParameters *par = av_mallocz(sizeof(*par));
60
61
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 93169 if (!par)
62 ✗ return NULL;
63 93169 codec_parameters_reset(par);
64 93169 return par;
65 }
66
67 2319512 void avcodec_parameters_free(AVCodecParameters **ppar)
68 {
69 2319512 AVCodecParameters *par = *ppar;
70
71
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 2319512 if (!par)
72 2226349 return;
73 93163 codec_parameters_reset(par);
74
75 93163 av_freep(ppar);
76 }
77
78 158027 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
79 const AVPacketSideData *src, int nb_src)
80 {
81 AVPacketSideData *dst;
82 158027 int nb_dst = *pnb_dst;
83
84
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 158027 if (!src)
85 149527 return 0;
86
87 8500 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
88
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 8500 if (!dst)
89 ✗ return AVERROR(ENOMEM);
90
91
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 18118 for (int i = 0; i < nb_src; i++) {
92 9618 const AVPacketSideData *src_sd = &src[i];
93 9618 AVPacketSideData *dst_sd = &dst[i];
94
95 9618 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
96
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 9618 if (!dst_sd->data)
97 ✗ return AVERROR(ENOMEM);
98
99 9618 dst_sd->type = src_sd->type;
100 9618 dst_sd->size = src_sd->size;
101 9618 *pnb_dst = ++nb_dst;
102 }
103
104 8500 return 0;
105 }
106
107 45266 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
108 {
109 int ret;
110
111 45266 codec_parameters_reset(dst);
112 45266 memcpy(dst, src, sizeof(*dst));
113
114 45266 dst->ch_layout = (AVChannelLayout){0};
115 45266 dst->extradata = NULL;
116 45266 dst->extradata_size = 0;
117 45266 dst->coded_side_data = NULL;
118 45266 dst->nb_coded_side_data = 0;
119
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 45266 if (src->extradata) {
120 7282 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
121
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 7282 if (!dst->extradata)
122 ✗ return AVERROR(ENOMEM);
123 7282 memcpy(dst->extradata, src->extradata, src->extradata_size);
124 7282 dst->extradata_size = src->extradata_size;
125 }
126 45266 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
127 45266 src->coded_side_data, src->nb_coded_side_data);
128
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 45266 if (ret < 0)
129 ✗ return ret;
130
131 45266 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
132
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 45266 if (ret < 0)
133 ✗ return ret;
134
135 45266 return 0;
136 }
137
138 45229 int avcodec_parameters_from_context(AVCodecParameters *par,
139 const AVCodecContext *codec)
140 {
141 int ret;
142
143 45229 codec_parameters_reset(par);
144
145 45229 par->codec_type = codec->codec_type;
146 45229 par->codec_id = codec->codec_id;
147 45229 par->codec_tag = codec->codec_tag;
148
149 45229 par->bit_rate = codec->bit_rate;
150 45229 par->bits_per_coded_sample = codec->bits_per_coded_sample;
151 45229 par->bits_per_raw_sample = codec->bits_per_raw_sample;
152 45229 par->profile = codec->profile;
153 45229 par->level = codec->level;
154
155
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 45229 switch (par->codec_type) {
156 34661 case AVMEDIA_TYPE_VIDEO:
157 69322 par->format = codec->sw_pix_fmt != AV_PIX_FMT_NONE ?
158
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 34661 codec->sw_pix_fmt : codec->pix_fmt;
159 34661 par->width = codec->width;
160 34661 par->height = codec->height;
161 34661 par->field_order = codec->field_order;
162 34661 par->color_range = codec->color_range;
163 34661 par->color_primaries = codec->color_primaries;
164 34661 par->color_trc = codec->color_trc;
165 34661 par->color_space = codec->colorspace;
166 34661 par->chroma_location = codec->chroma_sample_location;
167 34661 par->sample_aspect_ratio = codec->sample_aspect_ratio;
168 34661 par->video_delay = codec->has_b_frames;
169 34661 par->framerate = codec->framerate;
170 34661 par->alpha_mode = codec->alpha_mode;
171 34661 break;
172 10050 case AVMEDIA_TYPE_AUDIO:
173 10050 par->format = codec->sample_fmt;
174 10050 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
175
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 10050 if (ret < 0)
176 ✗ return ret;
177 10050 par->sample_rate = codec->sample_rate;
178 10050 par->block_align = codec->block_align;
179 10050 par->frame_size = codec->frame_size;
180 10050 par->initial_padding = codec->initial_padding;
181 10050 par->trailing_padding = codec->trailing_padding;
182 10050 par->seek_preroll = codec->seek_preroll;
183 10050 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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 45229 if (codec->extradata) {
191 7996 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
192
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 7996 if (!par->extradata)
193 ✗ return AVERROR(ENOMEM);
194 7996 memcpy(par->extradata, codec->extradata, codec->extradata_size);
195 7996 par->extradata_size = codec->extradata_size;
196 }
197
198 45229 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
199 45229 codec->coded_side_data, codec->nb_coded_side_data);
200
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 45229 if (ret < 0)
201 ✗ return ret;
202
203 45229 return 0;
204 }
205
206 67532 int avcodec_parameters_to_context(AVCodecContext *codec,
207 const AVCodecParameters *par)
208 {
209 int ret;
210
211 67532 codec->codec_type = par->codec_type;
212 67532 codec->codec_id = par->codec_id;
213 67532 codec->codec_tag = par->codec_tag;
214
215 67532 codec->bit_rate = par->bit_rate;
216 67532 codec->bits_per_coded_sample = par->bits_per_coded_sample;
217 67532 codec->bits_per_raw_sample = par->bits_per_raw_sample;
218 67532 codec->profile = par->profile;
219 67532 codec->level = par->level;
220
221
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 67532 switch (par->codec_type) {
222 53383 case AVMEDIA_TYPE_VIDEO:
223 53383 codec->pix_fmt = par->format;
224 53383 codec->width = par->width;
225 53383 codec->height = par->height;
226 53383 codec->field_order = par->field_order;
227 53383 codec->color_range = par->color_range;
228 53383 codec->color_primaries = par->color_primaries;
229 53383 codec->color_trc = par->color_trc;
230 53383 codec->colorspace = par->color_space;
231 53383 codec->chroma_sample_location = par->chroma_location;
232 53383 codec->sample_aspect_ratio = par->sample_aspect_ratio;
233 53383 codec->has_b_frames = par->video_delay;
234 53383 codec->framerate = par->framerate;
235 53383 codec->alpha_mode = par->alpha_mode;
236 53383 break;
237 13266 case AVMEDIA_TYPE_AUDIO:
238 13266 codec->sample_fmt = par->format;
239 13266 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
240
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 13266 if (ret < 0)
241 ✗ return ret;
242 13266 codec->sample_rate = par->sample_rate;
243 13266 codec->block_align = par->block_align;
244 13266 codec->frame_size = par->frame_size;
245 13266 codec->delay =
246 13266 codec->initial_padding = par->initial_padding;
247 13266 codec->trailing_padding = par->trailing_padding;
248 13266 codec->seek_preroll = par->seek_preroll;
249 13266 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 67532 av_freep(&codec->extradata);
257 67532 codec->extradata_size = 0;
258
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 67532 if (par->extradata) {
259 9985 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
260
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 9985 if (!codec->extradata)
261 ✗ return AVERROR(ENOMEM);
262 9985 memcpy(codec->extradata, par->extradata, par->extradata_size);
263 9985 codec->extradata_size = par->extradata_size;
264 }
265
266 67532 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
267 67532 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
268 67532 par->coded_side_data, par->nb_coded_side_data);
269
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 67532 if (ret < 0)
270 ✗ return ret;
271
272 67532 return 0;
273 }
274