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Diffstat (limited to '')
| -rw-r--r-- | media/ffvpx/libavcodec/codec_par.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/codec_par.c b/media/ffvpx/libavcodec/codec_par.c new file mode 100644 index 0000000000..abda649aa8 --- /dev/null +++ b/media/ffvpx/libavcodec/codec_par.c @@ -0,0 +1,263 @@ +/* + * AVCodecParameters functions for libavcodec + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * AVCodecParameters functions for libavcodec. + */ + +#include <string.h> +#include "libavutil/mem.h" +#include "avcodec.h" +#include "codec_par.h" + +static void codec_parameters_reset(AVCodecParameters *par) +{ + av_freep(&par->extradata); + av_channel_layout_uninit(&par->ch_layout); + + memset(par, 0, sizeof(*par)); + + par->codec_type = AVMEDIA_TYPE_UNKNOWN; + par->codec_id = AV_CODEC_ID_NONE; + par->format = -1; + par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; + 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 }; + par->profile = FF_PROFILE_UNKNOWN; + par->level = FF_LEVEL_UNKNOWN; +} + +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) +{ + int ret; + + codec_parameters_reset(dst); + memcpy(dst, src, sizeof(*dst)); + + dst->ch_layout = (AVChannelLayout){0}; + 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; + } + + ret = av_channel_layout_copy(&dst->ch_layout, &src->ch_layout); + if (ret < 0) + return ret; + + return 0; +} + +int avcodec_parameters_from_context(AVCodecParameters *par, + const AVCodecContext *codec) +{ + int ret; + + 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->bits_per_raw_sample = codec->bits_per_raw_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; + par->video_delay = codec->has_b_frames; + break; + case AVMEDIA_TYPE_AUDIO: + par->format = codec->sample_fmt; +#if FF_API_OLD_CHANNEL_LAYOUT +FF_DISABLE_DEPRECATION_WARNINGS + // if the old/new fields are set inconsistently, prefer the old ones + if ((codec->channels && codec->channels != codec->ch_layout.nb_channels) || + (codec->channel_layout && (codec->ch_layout.order != AV_CHANNEL_ORDER_NATIVE || + codec->ch_layout.u.mask != codec->channel_layout))) { + if (codec->channel_layout) + av_channel_layout_from_mask(&par->ch_layout, codec->channel_layout); + else { + par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; + par->ch_layout.nb_channels = codec->channels; + } +FF_ENABLE_DEPRECATION_WARNINGS + } else { +#endif + ret = av_channel_layout_copy(&par->ch_layout, &codec->ch_layout); + if (ret < 0) + return ret; +#if FF_API_OLD_CHANNEL_LAYOUT +FF_DISABLE_DEPRECATION_WARNINGS + } + par->channel_layout = par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? + par->ch_layout.u.mask : 0; + par->channels = par->ch_layout.nb_channels; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + par->sample_rate = codec->sample_rate; + par->block_align = codec->block_align; + par->frame_size = codec->frame_size; + par->initial_padding = codec->initial_padding; + par->trailing_padding = codec->trailing_padding; + par->seek_preroll = codec->seek_preroll; + break; + case AVMEDIA_TYPE_SUBTITLE: + par->width = codec->width; + par->height = codec->height; + 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) +{ + int ret; + + 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->bits_per_raw_sample = par->bits_per_raw_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; + codec->has_b_frames = par->video_delay; + break; + case AVMEDIA_TYPE_AUDIO: + codec->sample_fmt = par->format; +#if FF_API_OLD_CHANNEL_LAYOUT +FF_DISABLE_DEPRECATION_WARNINGS + // if the old/new fields are set inconsistently, prefer the old ones + if ((par->channels && par->channels != par->ch_layout.nb_channels) || + (par->channel_layout && (par->ch_layout.order != AV_CHANNEL_ORDER_NATIVE || + par->ch_layout.u.mask != par->channel_layout))) { + if (par->channel_layout) + av_channel_layout_from_mask(&codec->ch_layout, par->channel_layout); + else { + codec->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; + codec->ch_layout.nb_channels = par->channels; + } +FF_ENABLE_DEPRECATION_WARNINGS + } else { +#endif + ret = av_channel_layout_copy(&codec->ch_layout, &par->ch_layout); + if (ret < 0) + return ret; +#if FF_API_OLD_CHANNEL_LAYOUT +FF_DISABLE_DEPRECATION_WARNINGS + } + codec->channel_layout = codec->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? + codec->ch_layout.u.mask : 0; + codec->channels = codec->ch_layout.nb_channels; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + codec->sample_rate = par->sample_rate; + codec->block_align = par->block_align; + codec->frame_size = par->frame_size; + codec->delay = + codec->initial_padding = par->initial_padding; + codec->trailing_padding = par->trailing_padding; + codec->seek_preroll = par->seek_preroll; + break; + case AVMEDIA_TYPE_SUBTITLE: + codec->width = par->width; + codec->height = par->height; + 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; +} |