diff options
Diffstat (limited to 'libavcodec/utils.c')
-rw-r--r-- | libavcodec/utils.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 073c6fa1a4..f4312b28f4 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -3680,6 +3680,158 @@ AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx) return props; } +static void codec_parameters_reset(AVCodecParameters *par) +{ + av_freep(&par->extradata); + + memset(par, 0, sizeof(*par)); + + par->codec_type = AVMEDIA_TYPE_UNKNOWN; + par->codec_id = AV_CODEC_ID_NONE; + par->format = -1; + par->field_order = AV_FIELD_UNKNOWN; + par->color_range = AVCOL_RANGE_UNSPECIFIED; + par->color_primaries = AVCOL_PRI_UNSPECIFIED; + par->color_trc = AVCOL_TRC_UNSPECIFIED; + par->color_space = AVCOL_SPC_UNSPECIFIED; + par->chroma_location = AVCHROMA_LOC_UNSPECIFIED; + par->sample_aspect_ratio = (AVRational){ 0, 1 }; +} + +AVCodecParameters *avcodec_parameters_alloc(void) +{ + AVCodecParameters *par = av_mallocz(sizeof(*par)); + + if (!par) + return NULL; + codec_parameters_reset(par); + return par; +} + +void avcodec_parameters_free(AVCodecParameters **ppar) +{ + AVCodecParameters *par = *ppar; + + if (!par) + return; + codec_parameters_reset(par); + + av_freep(ppar); +} + +int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src) +{ + codec_parameters_reset(dst); + memcpy(dst, src, sizeof(*dst)); + + dst->extradata = NULL; + dst->extradata_size = 0; + if (src->extradata) { + dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); + if (!dst->extradata) + return AVERROR(ENOMEM); + memcpy(dst->extradata, src->extradata, src->extradata_size); + dst->extradata_size = src->extradata_size; + } + + return 0; +} + +int avcodec_parameters_from_context(AVCodecParameters *par, + const AVCodecContext *codec) +{ + codec_parameters_reset(par); + + par->codec_type = codec->codec_type; + par->codec_id = codec->codec_id; + par->codec_tag = codec->codec_tag; + + par->bit_rate = codec->bit_rate; + par->bits_per_coded_sample = codec->bits_per_coded_sample; + par->profile = codec->profile; + par->level = codec->level; + + switch (par->codec_type) { + case AVMEDIA_TYPE_VIDEO: + par->format = codec->pix_fmt; + par->width = codec->width; + par->height = codec->height; + par->field_order = codec->field_order; + par->color_range = codec->color_range; + par->color_primaries = codec->color_primaries; + par->color_trc = codec->color_trc; + par->color_space = codec->colorspace; + par->chroma_location = codec->chroma_sample_location; + par->sample_aspect_ratio = codec->sample_aspect_ratio; + break; + case AVMEDIA_TYPE_AUDIO: + par->format = codec->sample_fmt; + par->channel_layout = codec->channel_layout; + par->channels = codec->channels; + par->sample_rate = codec->sample_rate; + par->block_align = codec->block_align; + par->initial_padding = codec->initial_padding; + break; + } + + if (codec->extradata) { + par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); + if (!par->extradata) + return AVERROR(ENOMEM); + memcpy(par->extradata, codec->extradata, codec->extradata_size); + par->extradata_size = codec->extradata_size; + } + + return 0; +} + +int avcodec_parameters_to_context(AVCodecContext *codec, + const AVCodecParameters *par) +{ + codec->codec_type = par->codec_type; + codec->codec_id = par->codec_id; + codec->codec_tag = par->codec_tag; + + codec->bit_rate = par->bit_rate; + codec->bits_per_coded_sample = par->bits_per_coded_sample; + codec->profile = par->profile; + codec->level = par->level; + + switch (par->codec_type) { + case AVMEDIA_TYPE_VIDEO: + codec->pix_fmt = par->format; + codec->width = par->width; + codec->height = par->height; + codec->field_order = par->field_order; + codec->color_range = par->color_range; + codec->color_primaries = par->color_primaries; + codec->color_trc = par->color_trc; + codec->colorspace = par->color_space; + codec->chroma_sample_location = par->chroma_location; + codec->sample_aspect_ratio = par->sample_aspect_ratio; + break; + case AVMEDIA_TYPE_AUDIO: + codec->sample_fmt = par->format; + codec->channel_layout = par->channel_layout; + codec->channels = par->channels; + codec->sample_rate = par->sample_rate; + codec->block_align = par->block_align; + codec->initial_padding = par->initial_padding; + break; + } + + if (par->extradata) { + av_freep(&codec->extradata); + codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); + if (!codec->extradata) + return AVERROR(ENOMEM); + memcpy(codec->extradata, par->extradata, par->extradata_size); + codec->extradata_size = par->extradata_size; + } + + return 0; +} + #ifdef TEST int main(void){ AVCodec *codec = NULL; |