FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2025-07-18 13:13:50
Exec Total Coverage
Lines: 166 178 93.3%
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 238351 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 238351 av_freep(&par->extradata);
35 238351 av_channel_layout_uninit(&par->ch_layout);
36 238351 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 238351 memset(par, 0, sizeof(*par));
39
40 238351 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 238351 par->codec_id = AV_CODEC_ID_NONE;
42 238351 par->format = -1;
43 238351 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 238351 par->field_order = AV_FIELD_UNKNOWN;
45 238351 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 238351 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 238351 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 238351 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 238351 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 238351 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 238351 par->framerate = (AVRational){ 0, 1 };
52 238351 par->profile = AV_PROFILE_UNKNOWN;
53 238351 par->level = AV_LEVEL_UNKNOWN;
54 238351 }
55
56 80341 AVCodecParameters *avcodec_parameters_alloc(void)
57 {
58 80341 AVCodecParameters *par = av_mallocz(sizeof(*par));
59
60
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 80341 if (!par)
61 ✗ return NULL;
62 80341 codec_parameters_reset(par);
63 80341 return par;
64 }
65
66 1965501 void avcodec_parameters_free(AVCodecParameters **ppar)
67 {
68 1965501 AVCodecParameters *par = *ppar;
69
70
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 1965501 if (!par)
71 1885166 return;
72 80335 codec_parameters_reset(par);
73
74 80335 av_freep(ppar);
75 }
76
77 141967 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
78 const AVPacketSideData *src, int nb_src)
79 {
80 AVPacketSideData *dst;
81 141967 int nb_dst = *pnb_dst;
82
83
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 141967 if (!src)
84 134510 return 0;
85
86 7457 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
87
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 7457 if (!dst)
88 ✗ return AVERROR(ENOMEM);
89
90
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 15421 for (int i = 0; i < nb_src; i++) {
91 7964 const AVPacketSideData *src_sd = &src[i];
92 7964 AVPacketSideData *dst_sd = &dst[i];
93
94 7964 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
95
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 7964 if (!dst_sd->data)
96 ✗ return AVERROR(ENOMEM);
97
98 7964 dst_sd->type = src_sd->type;
99 7964 dst_sd->size = src_sd->size;
100 7964 *pnb_dst = ++nb_dst;
101 }
102
103 7457 return 0;
104 }
105
106 34576 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
107 {
108 int ret;
109
110 34576 codec_parameters_reset(dst);
111 34576 memcpy(dst, src, sizeof(*dst));
112
113 34576 dst->ch_layout = (AVChannelLayout){0};
114 34576 dst->extradata = NULL;
115 34576 dst->extradata_size = 0;
116 34576 dst->coded_side_data = NULL;
117 34576 dst->nb_coded_side_data = 0;
118
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 34576 if (src->extradata) {
119 5218 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
120
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 5218 if (!dst->extradata)
121 ✗ return AVERROR(ENOMEM);
122 5218 memcpy(dst->extradata, src->extradata, src->extradata_size);
123 5218 dst->extradata_size = src->extradata_size;
124 }
125 34576 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
126 34576 src->coded_side_data, src->nb_coded_side_data);
127
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 34576 if (ret < 0)
128 ✗ return ret;
129
130 34576 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
131
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 34576 if (ret < 0)
132 ✗ return ret;
133
134 34576 return 0;
135 }
136
137 43099 int avcodec_parameters_from_context(AVCodecParameters *par,
138 const AVCodecContext *codec)
139 {
140 int ret;
141
142 43099 codec_parameters_reset(par);
143
144 43099 par->codec_type = codec->codec_type;
145 43099 par->codec_id = codec->codec_id;
146 43099 par->codec_tag = codec->codec_tag;
147
148 43099 par->bit_rate = codec->bit_rate;
149 43099 par->bits_per_coded_sample = codec->bits_per_coded_sample;
150 43099 par->bits_per_raw_sample = codec->bits_per_raw_sample;
151 43099 par->profile = codec->profile;
152 43099 par->level = codec->level;
153
154
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 43099 switch (par->codec_type) {
155 33705 case AVMEDIA_TYPE_VIDEO:
156 33705 par->format = codec->pix_fmt;
157 33705 par->width = codec->width;
158 33705 par->height = codec->height;
159 33705 par->field_order = codec->field_order;
160 33705 par->color_range = codec->color_range;
161 33705 par->color_primaries = codec->color_primaries;
162 33705 par->color_trc = codec->color_trc;
163 33705 par->color_space = codec->colorspace;
164 33705 par->chroma_location = codec->chroma_sample_location;
165 33705 par->sample_aspect_ratio = codec->sample_aspect_ratio;
166 33705 par->video_delay = codec->has_b_frames;
167 33705 par->framerate = codec->framerate;
168 33705 break;
169 8934 case AVMEDIA_TYPE_AUDIO:
170 8934 par->format = codec->sample_fmt;
171 8934 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
172
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 8934 if (ret < 0)
173 ✗ return ret;
174 8934 par->sample_rate = codec->sample_rate;
175 8934 par->block_align = codec->block_align;
176 8934 par->frame_size = codec->frame_size;
177 8934 par->initial_padding = codec->initial_padding;
178 8934 par->trailing_padding = codec->trailing_padding;
179 8934 par->seek_preroll = codec->seek_preroll;
180 8934 break;
181 374 case AVMEDIA_TYPE_SUBTITLE:
182 374 par->width = codec->width;
183 374 par->height = codec->height;
184 374 break;
185 }
186
187
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 43099 if (codec->extradata) {
188 7107 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
189
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 7107 if (!par->extradata)
190 ✗ return AVERROR(ENOMEM);
191 7107 memcpy(par->extradata, codec->extradata, codec->extradata_size);
192 7107 par->extradata_size = codec->extradata_size;
193 }
194
195 43099 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
196 43099 codec->coded_side_data, codec->nb_coded_side_data);
197
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 43099 if (ret < 0)
198 ✗ return ret;
199
200 43099 return 0;
201 }
202
203 64292 int avcodec_parameters_to_context(AVCodecContext *codec,
204 const AVCodecParameters *par)
205 {
206 int ret;
207
208 64292 codec->codec_type = par->codec_type;
209 64292 codec->codec_id = par->codec_id;
210 64292 codec->codec_tag = par->codec_tag;
211
212 64292 codec->bit_rate = par->bit_rate;
213 64292 codec->bits_per_coded_sample = par->bits_per_coded_sample;
214 64292 codec->bits_per_raw_sample = par->bits_per_raw_sample;
215 64292 codec->profile = par->profile;
216 64292 codec->level = par->level;
217
218
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 64292 switch (par->codec_type) {
219 51783 case AVMEDIA_TYPE_VIDEO:
220 51783 codec->pix_fmt = par->format;
221 51783 codec->width = par->width;
222 51783 codec->height = par->height;
223 51783 codec->field_order = par->field_order;
224 51783 codec->color_range = par->color_range;
225 51783 codec->color_primaries = par->color_primaries;
226 51783 codec->color_trc = par->color_trc;
227 51783 codec->colorspace = par->color_space;
228 51783 codec->chroma_sample_location = par->chroma_location;
229 51783 codec->sample_aspect_ratio = par->sample_aspect_ratio;
230 51783 codec->has_b_frames = par->video_delay;
231 51783 codec->framerate = par->framerate;
232 51783 break;
233 11741 case AVMEDIA_TYPE_AUDIO:
234 11741 codec->sample_fmt = par->format;
235 11741 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
236
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 11741 if (ret < 0)
237 ✗ return ret;
238 11741 codec->sample_rate = par->sample_rate;
239 11741 codec->block_align = par->block_align;
240 11741 codec->frame_size = par->frame_size;
241 11741 codec->delay =
242 11741 codec->initial_padding = par->initial_padding;
243 11741 codec->trailing_padding = par->trailing_padding;
244 11741 codec->seek_preroll = par->seek_preroll;
245 11741 break;
246 502 case AVMEDIA_TYPE_SUBTITLE:
247 502 codec->width = par->width;
248 502 codec->height = par->height;
249 502 break;
250 }
251
252 64292 av_freep(&codec->extradata);
253 64292 codec->extradata_size = 0;
254
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 64292 if (par->extradata) {
255 8743 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
256
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 8743 if (!codec->extradata)
257 ✗ return AVERROR(ENOMEM);
258 8743 memcpy(codec->extradata, par->extradata, par->extradata_size);
259 8743 codec->extradata_size = par->extradata_size;
260 }
261
262 64292 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
263 64292 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
264 64292 par->coded_side_data, par->nb_coded_side_data);
265
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 64292 if (ret < 0)
266 ✗ return ret;
267
268 64292 return 0;
269 }
270