FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/codec_par.c
Date: 2026-08-28 18:35:09
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 278075 static void codec_parameters_reset(AVCodecParameters *par)
33 {
34 278075 av_freep(&par->extradata);
35 278075 av_channel_layout_uninit(&par->ch_layout);
36 278075 av_packet_side_data_free(&par->coded_side_data, &par->nb_coded_side_data);
37
38 278075 memset(par, 0, sizeof(*par));
39
40 278075 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
41 278075 par->codec_id = AV_CODEC_ID_NONE;
42 278075 par->format = -1;
43 278075 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
44 278075 par->field_order = AV_FIELD_UNKNOWN;
45 278075 par->color_range = AVCOL_RANGE_UNSPECIFIED;
46 278075 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
47 278075 par->color_trc = AVCOL_TRC_UNSPECIFIED;
48 278075 par->color_space = AVCOL_SPC_UNSPECIFIED;
49 278075 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
50 278075 par->sample_aspect_ratio = (AVRational){ 0, 1 };
51 278075 par->framerate = (AVRational){ 0, 1 };
52 278075 par->profile = AV_PROFILE_UNKNOWN;
53 278075 par->level = AV_LEVEL_UNKNOWN;
54 278075 par->alpha_mode = AVALPHA_MODE_UNSPECIFIED;
55 278075 }
56
57 93585 AVCodecParameters *avcodec_parameters_alloc(void)
58 {
59 93585 AVCodecParameters *par = av_mallocz(sizeof(*par));
60
61
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 93585 if (!par)
62 ✗ return NULL;
63 93585 codec_parameters_reset(par);
64 93585 return par;
65 }
66
67 2289947 void avcodec_parameters_free(AVCodecParameters **ppar)
68 {
69 2289947 AVCodecParameters *par = *ppar;
70
71
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 2289947 if (!par)
72 2196368 return;
73 93579 codec_parameters_reset(par);
74
75 93579 av_freep(ppar);
76 }
77
78 158731 static int codec_parameters_copy_side_data(AVPacketSideData **pdst, int *pnb_dst,
79 const AVPacketSideData *src, int nb_src)
80 {
81 AVPacketSideData *dst;
82 158731 int nb_dst = *pnb_dst;
83
84
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 158731 if (!src)
85 150169 return 0;
86
87 8562 *pdst = dst = av_calloc(nb_src, sizeof(*dst));
88
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 8562 if (!dst)
89 ✗ return AVERROR(ENOMEM);
90
91
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 18242 for (int i = 0; i < nb_src; i++) {
92 9680 const AVPacketSideData *src_sd = &src[i];
93 9680 AVPacketSideData *dst_sd = &dst[i];
94
95 9680 dst_sd->data = av_memdup(src_sd->data, src_sd->size);
96
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 9680 if (!dst_sd->data)
97 ✗ return AVERROR(ENOMEM);
98
99 9680 dst_sd->type = src_sd->type;
100 9680 dst_sd->size = src_sd->size;
101 9680 *pnb_dst = ++nb_dst;
102 }
103
104 8562 return 0;
105 }
106
107 45469 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
108 {
109 int ret;
110
111 45469 codec_parameters_reset(dst);
112 45469 memcpy(dst, src, sizeof(*dst));
113
114 45469 dst->ch_layout = (AVChannelLayout){0};
115 45469 dst->extradata = NULL;
116 45469 dst->extradata_size = 0;
117 45469 dst->coded_side_data = NULL;
118 45469 dst->nb_coded_side_data = 0;
119
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 45469 if (src->extradata) {
120 7293 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
121
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 7293 if (!dst->extradata)
122 ✗ return AVERROR(ENOMEM);
123 7293 memcpy(dst->extradata, src->extradata, src->extradata_size);
124 7293 dst->extradata_size = src->extradata_size;
125 }
126 45469 ret = codec_parameters_copy_side_data(&dst->coded_side_data, &dst->nb_coded_side_data,
127 45469 src->coded_side_data, src->nb_coded_side_data);
128
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 45469 if (ret < 0)
129 ✗ return ret;
130
131 45469 ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout);
132
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 45469 if (ret < 0)
133 ✗ return ret;
134
135 45469 return 0;
136 }
137
138 45442 int avcodec_parameters_from_context(AVCodecParameters *par,
139 const AVCodecContext *codec)
140 {
141 int ret;
142
143 45442 codec_parameters_reset(par);
144
145 45442 par->codec_type = codec->codec_type;
146 45442 par->codec_id = codec->codec_id;
147 45442 par->codec_tag = codec->codec_tag;
148
149 45442 par->bit_rate = codec->bit_rate;
150 45442 par->bits_per_coded_sample = codec->bits_per_coded_sample;
151 45442 par->bits_per_raw_sample = codec->bits_per_raw_sample;
152 45442 par->profile = codec->profile;
153 45442 par->level = codec->level;
154
155
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 45442 switch (par->codec_type) {
156 34684 case AVMEDIA_TYPE_VIDEO:
157 69368 par->format = codec->sw_pix_fmt != AV_PIX_FMT_NONE ?
158
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 34684 codec->sw_pix_fmt : codec->pix_fmt;
159 34684 par->width = codec->width;
160 34684 par->height = codec->height;
161 34684 par->field_order = codec->field_order;
162 34684 par->color_range = codec->color_range;
163 34684 par->color_primaries = codec->color_primaries;
164 34684 par->color_trc = codec->color_trc;
165 34684 par->color_space = codec->colorspace;
166 34684 par->chroma_location = codec->chroma_sample_location;
167 34684 par->sample_aspect_ratio = codec->sample_aspect_ratio;
168 34684 par->video_delay = codec->has_b_frames;
169 34684 par->framerate = codec->framerate;
170 34684 par->alpha_mode = codec->alpha_mode;
171 34684 break;
172 10239 case AVMEDIA_TYPE_AUDIO:
173 10239 par->format = codec->sample_fmt;
174 10239 ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout);
175
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 10239 if (ret < 0)
176 ✗ return ret;
177 10239 par->sample_rate = codec->sample_rate;
178 10239 par->block_align = codec->block_align;
179 10239 par->frame_size = codec->frame_size;
180 10239 par->initial_padding = codec->initial_padding;
181 10239 par->trailing_padding = codec->trailing_padding;
182 10239 par->seek_preroll = codec->seek_preroll;
183 10239 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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 45442 if (codec->extradata) {
191 8008 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
192
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 8008 if (!par->extradata)
193 ✗ return AVERROR(ENOMEM);
194 8008 memcpy(par->extradata, codec->extradata, codec->extradata_size);
195 8008 par->extradata_size = codec->extradata_size;
196 }
197
198 45442 ret = codec_parameters_copy_side_data(&par->coded_side_data, &par->nb_coded_side_data,
199 45442 codec->coded_side_data, codec->nb_coded_side_data);
200
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 45442 if (ret < 0)
201 ✗ return ret;
202
203 45442 return 0;
204 }
205
206 67820 int avcodec_parameters_to_context(AVCodecContext *codec,
207 const AVCodecParameters *par)
208 {
209 int ret;
210
211 67820 codec->codec_type = par->codec_type;
212 67820 codec->codec_id = par->codec_id;
213 67820 codec->codec_tag = par->codec_tag;
214
215 67820 codec->bit_rate = par->bit_rate;
216 67820 codec->bits_per_coded_sample = par->bits_per_coded_sample;
217 67820 codec->bits_per_raw_sample = par->bits_per_raw_sample;
218 67820 codec->profile = par->profile;
219 67820 codec->level = par->level;
220
221
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 67820 switch (par->codec_type) {
222 53419 case AVMEDIA_TYPE_VIDEO:
223 53419 codec->pix_fmt = par->format;
224 53419 codec->width = par->width;
225 53419 codec->height = par->height;
226 53419 codec->field_order = par->field_order;
227 53419 codec->color_range = par->color_range;
228 53419 codec->color_primaries = par->color_primaries;
229 53419 codec->color_trc = par->color_trc;
230 53419 codec->colorspace = par->color_space;
231 53419 codec->chroma_sample_location = par->chroma_location;
232 53419 codec->sample_aspect_ratio = par->sample_aspect_ratio;
233 53419 codec->has_b_frames = par->video_delay;
234 53419 codec->framerate = par->framerate;
235 53419 codec->alpha_mode = par->alpha_mode;
236 53419 break;
237 13515 case AVMEDIA_TYPE_AUDIO:
238 13515 codec->sample_fmt = par->format;
239 13515 ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout);
240
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 13515 if (ret < 0)
241 ✗ return ret;
242 13515 codec->sample_rate = par->sample_rate;
243 13515 codec->block_align = par->block_align;
244 13515 codec->frame_size = par->frame_size;
245 13515 codec->delay =
246 13515 codec->initial_padding = par->initial_padding;
247 13515 codec->trailing_padding = par->trailing_padding;
248 13515 codec->seek_preroll = par->seek_preroll;
249 13515 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 67820 av_freep(&codec->extradata);
257 67820 codec->extradata_size = 0;
258
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 67820 if (par->extradata) {
259 10000 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
260
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 10000 if (!codec->extradata)
261 ✗ return AVERROR(ENOMEM);
262 10000 memcpy(codec->extradata, par->extradata, par->extradata_size);
263 10000 codec->extradata_size = par->extradata_size;
264 }
265
266 67820 av_packet_side_data_free(&codec->coded_side_data, &codec->nb_coded_side_data);
267 67820 ret = codec_parameters_copy_side_data(&codec->coded_side_data, &codec->nb_coded_side_data,
268 67820 par->coded_side_data, par->nb_coded_side_data);
269
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 67820 if (ret < 0)
270 ✗ return ret;
271
272 67820 return 0;
273 }
274