2 * AVCodecParameters functions for libavcodec
4 * This file is part of FFmpeg.
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7 * modify it under the terms of the GNU Lesser General Public
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14 * Lesser General Public License for more details.
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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
23 * AVCodecParameters functions for libavcodec.
27 #include "libavutil/mem.h"
29 #include "codec_par.h"
31 static void codec_parameters_reset(AVCodecParameters *par)
33 av_freep(&par->extradata);
35 memset(par, 0, sizeof(*par));
37 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
38 par->codec_id = AV_CODEC_ID_NONE;
40 par->field_order = AV_FIELD_UNKNOWN;
41 par->color_range = AVCOL_RANGE_UNSPECIFIED;
42 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
43 par->color_trc = AVCOL_TRC_UNSPECIFIED;
44 par->color_space = AVCOL_SPC_UNSPECIFIED;
45 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
46 par->sample_aspect_ratio = (AVRational){ 0, 1 };
47 par->profile = FF_PROFILE_UNKNOWN;
48 par->level = FF_LEVEL_UNKNOWN;
51 AVCodecParameters *avcodec_parameters_alloc(void)
53 AVCodecParameters *par = av_mallocz(sizeof(*par));
57 codec_parameters_reset(par);
61 void avcodec_parameters_free(AVCodecParameters **ppar)
63 AVCodecParameters *par = *ppar;
67 codec_parameters_reset(par);
72 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
74 codec_parameters_reset(dst);
75 memcpy(dst, src, sizeof(*dst));
77 dst->extradata = NULL;
78 dst->extradata_size = 0;
80 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
82 return AVERROR(ENOMEM);
83 memcpy(dst->extradata, src->extradata, src->extradata_size);
84 dst->extradata_size = src->extradata_size;
90 int avcodec_parameters_from_context(AVCodecParameters *par,
91 const AVCodecContext *codec)
93 codec_parameters_reset(par);
95 par->codec_type = codec->codec_type;
96 par->codec_id = codec->codec_id;
97 par->codec_tag = codec->codec_tag;
99 par->bit_rate = codec->bit_rate;
100 par->bits_per_coded_sample = codec->bits_per_coded_sample;
101 par->bits_per_raw_sample = codec->bits_per_raw_sample;
102 par->profile = codec->profile;
103 par->level = codec->level;
105 switch (par->codec_type) {
106 case AVMEDIA_TYPE_VIDEO:
107 par->format = codec->pix_fmt;
108 par->width = codec->width;
109 par->height = codec->height;
110 par->field_order = codec->field_order;
111 par->color_range = codec->color_range;
112 par->color_primaries = codec->color_primaries;
113 par->color_trc = codec->color_trc;
114 par->color_space = codec->colorspace;
115 par->chroma_location = codec->chroma_sample_location;
116 par->sample_aspect_ratio = codec->sample_aspect_ratio;
117 par->video_delay = codec->has_b_frames;
119 case AVMEDIA_TYPE_AUDIO:
120 par->format = codec->sample_fmt;
121 par->channel_layout = codec->channel_layout;
122 par->channels = codec->channels;
123 par->sample_rate = codec->sample_rate;
124 par->block_align = codec->block_align;
125 par->frame_size = codec->frame_size;
126 par->initial_padding = codec->initial_padding;
127 par->trailing_padding = codec->trailing_padding;
128 par->seek_preroll = codec->seek_preroll;
130 case AVMEDIA_TYPE_SUBTITLE:
131 par->width = codec->width;
132 par->height = codec->height;
136 if (codec->extradata) {
137 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
139 return AVERROR(ENOMEM);
140 memcpy(par->extradata, codec->extradata, codec->extradata_size);
141 par->extradata_size = codec->extradata_size;
147 int avcodec_parameters_to_context(AVCodecContext *codec,
148 const AVCodecParameters *par)
150 codec->codec_type = par->codec_type;
151 codec->codec_id = par->codec_id;
152 codec->codec_tag = par->codec_tag;
154 codec->bit_rate = par->bit_rate;
155 codec->bits_per_coded_sample = par->bits_per_coded_sample;
156 codec->bits_per_raw_sample = par->bits_per_raw_sample;
157 codec->profile = par->profile;
158 codec->level = par->level;
160 switch (par->codec_type) {
161 case AVMEDIA_TYPE_VIDEO:
162 codec->pix_fmt = par->format;
163 codec->width = par->width;
164 codec->height = par->height;
165 codec->field_order = par->field_order;
166 codec->color_range = par->color_range;
167 codec->color_primaries = par->color_primaries;
168 codec->color_trc = par->color_trc;
169 codec->colorspace = par->color_space;
170 codec->chroma_sample_location = par->chroma_location;
171 codec->sample_aspect_ratio = par->sample_aspect_ratio;
172 codec->has_b_frames = par->video_delay;
174 case AVMEDIA_TYPE_AUDIO:
175 codec->sample_fmt = par->format;
176 codec->channel_layout = par->channel_layout;
177 codec->channels = par->channels;
178 codec->sample_rate = par->sample_rate;
179 codec->block_align = par->block_align;
180 codec->frame_size = par->frame_size;
182 codec->initial_padding = par->initial_padding;
183 codec->trailing_padding = par->trailing_padding;
184 codec->seek_preroll = par->seek_preroll;
186 case AVMEDIA_TYPE_SUBTITLE:
187 codec->width = par->width;
188 codec->height = par->height;
192 if (par->extradata) {
193 av_freep(&codec->extradata);
194 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
195 if (!codec->extradata)
196 return AVERROR(ENOMEM);
197 memcpy(codec->extradata, par->extradata, par->extradata_size);
198 codec->extradata_size = par->extradata_size;