FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2025-07-02 09:19:21
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 235507 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 235507 av_freep(&par->extradata);
35 235507 av_channel_layout_uninit(&par->ch_layout);
36 235507 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 235507 memset(par, 0, sizeof(*par));
39
40 235507 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 235507 par->codec_id = AV_CODEC_ID_NONE;
42 235507 par->format = -1;
43 235507 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 235507 par->field_order = AV_FIELD_UNKNOWN;
45 235507 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 235507 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 235507 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 235507 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 235507 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 235507 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 235507 par->framerate = (AVRational){ 0, 1 };
52 235507 par->profile = AV_PROFILE_UNKNOWN;
53 235507 par->level = AV_LEVEL_UNKNOWN;
54 235507 }
55
56 79393 AVCodecParameters *avcodec_parameters_alloc(void)
57 {
58 79393 AVCodecParameters *par = av_mallocz(sizeof(*par));
59
60
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 79393 if (!par)
61 ✗ return NULL;
62 79393 codec_parameters_reset(par);
63 79393 return par;
64 }
65
66 1952379 void avcodec_parameters_free(AVCodecParameters **ppar)
67 {
68 1952379 AVCodecParameters *par = *ppar;
69
70
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 1952379 if (!par)
71 1872992 return;
72 79387 codec_parameters_reset(par);
73
74 79387 av_freep(ppar);
75 }
76
77 140370 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
78 const AVPacketSideData *src, int nb_src)
79 {
80 AVPacketSideData *dst;
81 140370 int nb_dst = *pnb_dst;
82
83
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 140370 if (!src)
84 132914 return 0;
85
86 7456 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
87
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 7456 if (!dst)
88 ✗ return AVERROR(ENOMEM);
89
90
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 15419 for (int i = 0; i < nb_src; i++) {
91 7963 const AVPacketSideData *src_sd = &src[i];
92 7963 AVPacketSideData *dst_sd = &dst[i];
93
94 7963 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
95
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 7963 if (!dst_sd->data)
96 ✗ return AVERROR(ENOMEM);
97
98 7963 dst_sd->type = src_sd->type;
99 7963 dst_sd->size = src_sd->size;
100 7963 *pnb_dst = ++nb_dst;
101 }
102
103 7456 return 0;
104 }
105
106 34156 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
107 {
108 int ret;
109
110 34156 codec_parameters_reset(dst);
111 34156 memcpy(dst, src, sizeof(*dst));
112
113 34156 dst->ch_layout = (AVChannelLayout){0};
114 34156 dst->extradata = NULL;
115 34156 dst->extradata_size = 0;
116 34156 dst->coded_side_data = NULL;
117 34156 dst->nb_coded_side_data = 0;
118
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 34156 if (src->extradata) {
119 5216 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
120
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 5216 if (!dst->extradata)
121 ✗ return AVERROR(ENOMEM);
122 5216 memcpy(dst->extradata, src->extradata, src->extradata_size);
123 5216 dst->extradata_size = src->extradata_size;
124 }
125 34156 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
126 34156 src->coded_side_data, src->nb_coded_side_data);
127
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 34156 if (ret < 0)
128 ✗ return ret;
129
130 34156 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
131
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 34156 if (ret < 0)
132 ✗ return ret;
133
134 34156 return 0;
135 }
136
137 42571 int avcodec_parameters_from_context(AVCodecParameters *par,
138 const AVCodecContext *codec)
139 {
140 int ret;
141
142 42571 codec_parameters_reset(par);
143
144 42571 par->codec_type = codec->codec_type;
145 42571 par->codec_id = codec->codec_id;
146 42571 par->codec_tag = codec->codec_tag;
147
148 42571 par->bit_rate = codec->bit_rate;
149 42571 par->bits_per_coded_sample = codec->bits_per_coded_sample;
150 42571 par->bits_per_raw_sample = codec->bits_per_raw_sample;
151 42571 par->profile = codec->profile;
152 42571 par->level = codec->level;
153
154
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 42571 switch (par->codec_type) {
155 33185 case AVMEDIA_TYPE_VIDEO:
156 33185 par->format = codec->pix_fmt;
157 33185 par->width = codec->width;
158 33185 par->height = codec->height;
159 33185 par->field_order = codec->field_order;
160 33185 par->color_range = codec->color_range;
161 33185 par->color_primaries = codec->color_primaries;
162 33185 par->color_trc = codec->color_trc;
163 33185 par->color_space = codec->colorspace;
164 33185 par->chroma_location = codec->chroma_sample_location;
165 33185 par->sample_aspect_ratio = codec->sample_aspect_ratio;
166 33185 par->video_delay = codec->has_b_frames;
167 33185 par->framerate = codec->framerate;
168 33185 break;
169 8926 case AVMEDIA_TYPE_AUDIO:
170 8926 par->format = codec->sample_fmt;
171 8926 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
172
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 8926 if (ret < 0)
173 ✗ return ret;
174 8926 par->sample_rate = codec->sample_rate;
175 8926 par->block_align = codec->block_align;
176 8926 par->frame_size = codec->frame_size;
177 8926 par->initial_padding = codec->initial_padding;
178 8926 par->trailing_padding = codec->trailing_padding;
179 8926 par->seek_preroll = codec->seek_preroll;
180 8926 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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 42571 if (codec->extradata) {
188 7104 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
189
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 7104 if (!par->extradata)
190 ✗ return AVERROR(ENOMEM);
191 7104 memcpy(par->extradata, codec->extradata, codec->extradata_size);
192 7104 par->extradata_size = codec->extradata_size;
193 }
194
195 42571 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
196 42571 codec->coded_side_data, codec->nb_coded_side_data);
197
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 42571 if (ret < 0)
198 ✗ return ret;
199
200 42571 return 0;
201 }
202
203 63643 int avcodec_parameters_to_context(AVCodecContext *codec,
204 const AVCodecParameters *par)
205 {
206 int ret;
207
208 63643 codec->codec_type = par->codec_type;
209 63643 codec->codec_id = par->codec_id;
210 63643 codec->codec_tag = par->codec_tag;
211
212 63643 codec->bit_rate = par->bit_rate;
213 63643 codec->bits_per_coded_sample = par->bits_per_coded_sample;
214 63643 codec->bits_per_raw_sample = par->bits_per_raw_sample;
215 63643 codec->profile = par->profile;
216 63643 codec->level = par->level;
217
218
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 63643 switch (par->codec_type) {
219 51144 case AVMEDIA_TYPE_VIDEO:
220 51144 codec->pix_fmt = par->format;
221 51144 codec->width = par->width;
222 51144 codec->height = par->height;
223 51144 codec->field_order = par->field_order;
224 51144 codec->color_range = par->color_range;
225 51144 codec->color_primaries = par->color_primaries;
226 51144 codec->color_trc = par->color_trc;
227 51144 codec->colorspace = par->color_space;
228 51144 codec->chroma_sample_location = par->chroma_location;
229 51144 codec->sample_aspect_ratio = par->sample_aspect_ratio;
230 51144 codec->has_b_frames = par->video_delay;
231 51144 codec->framerate = par->framerate;
232 51144 break;
233 11731 case AVMEDIA_TYPE_AUDIO:
234 11731 codec->sample_fmt = par->format;
235 11731 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
236
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 11731 if (ret < 0)
237 ✗ return ret;
238 11731 codec->sample_rate = par->sample_rate;
239 11731 codec->block_align = par->block_align;
240 11731 codec->frame_size = par->frame_size;
241 11731 codec->delay =
242 11731 codec->initial_padding = par->initial_padding;
243 11731 codec->trailing_padding = par->trailing_padding;
244 11731 codec->seek_preroll = par->seek_preroll;
245 11731 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 63643 av_freep(&codec->extradata);
253 63643 codec->extradata_size = 0;
254
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 63643 if (par->extradata) {
255 8739 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
256
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 8739 if (!codec->extradata)
257 ✗ return AVERROR(ENOMEM);
258 8739 memcpy(codec->extradata, par->extradata, par->extradata_size);
259 8739 codec->extradata_size = par->extradata_size;
260 }
261
262 63643 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
263 63643 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
264 63643 par->coded_side_data, par->nb_coded_side_data);
265
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 63643 if (ret < 0)
266 ✗ return ret;
267
268 63643 return 0;
269 }
270