mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: James Almer <jamrial@gmail.com>pull/371/head
James Almer
4 years ago
parent
cbb8943a54
commit
4057a060f6
3 changed files with 203 additions and 173 deletions
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/*
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* AVCodecParameters functions for libavcodec |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* AVCodecParameters functions for libavcodec. |
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*/ |
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#include <string.h> |
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#include "libavutil/mem.h" |
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#include "avcodec.h" |
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#include "codec_par.h" |
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static void codec_parameters_reset(AVCodecParameters *par) |
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{ |
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av_freep(&par->extradata); |
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memset(par, 0, sizeof(*par)); |
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par->codec_type = AVMEDIA_TYPE_UNKNOWN; |
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par->codec_id = AV_CODEC_ID_NONE; |
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par->format = -1; |
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par->field_order = AV_FIELD_UNKNOWN; |
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par->color_range = AVCOL_RANGE_UNSPECIFIED; |
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par->color_primaries = AVCOL_PRI_UNSPECIFIED; |
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par->color_trc = AVCOL_TRC_UNSPECIFIED; |
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par->color_space = AVCOL_SPC_UNSPECIFIED; |
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par->chroma_location = AVCHROMA_LOC_UNSPECIFIED; |
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par->sample_aspect_ratio = (AVRational){ 0, 1 }; |
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par->profile = FF_PROFILE_UNKNOWN; |
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par->level = FF_LEVEL_UNKNOWN; |
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} |
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AVCodecParameters *avcodec_parameters_alloc(void) |
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{ |
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AVCodecParameters *par = av_mallocz(sizeof(*par)); |
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if (!par) |
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return NULL; |
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codec_parameters_reset(par); |
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return par; |
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} |
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void avcodec_parameters_free(AVCodecParameters **ppar) |
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{ |
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AVCodecParameters *par = *ppar; |
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if (!par) |
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return; |
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codec_parameters_reset(par); |
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av_freep(ppar); |
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} |
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int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src) |
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{ |
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codec_parameters_reset(dst); |
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memcpy(dst, src, sizeof(*dst)); |
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dst->extradata = NULL; |
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dst->extradata_size = 0; |
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if (src->extradata) { |
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dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); |
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if (!dst->extradata) |
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return AVERROR(ENOMEM); |
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memcpy(dst->extradata, src->extradata, src->extradata_size); |
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dst->extradata_size = src->extradata_size; |
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} |
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return 0; |
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} |
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int avcodec_parameters_from_context(AVCodecParameters *par, |
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const AVCodecContext *codec) |
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{ |
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codec_parameters_reset(par); |
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par->codec_type = codec->codec_type; |
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par->codec_id = codec->codec_id; |
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par->codec_tag = codec->codec_tag; |
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par->bit_rate = codec->bit_rate; |
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par->bits_per_coded_sample = codec->bits_per_coded_sample; |
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par->bits_per_raw_sample = codec->bits_per_raw_sample; |
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par->profile = codec->profile; |
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par->level = codec->level; |
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switch (par->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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par->format = codec->pix_fmt; |
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par->width = codec->width; |
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par->height = codec->height; |
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par->field_order = codec->field_order; |
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par->color_range = codec->color_range; |
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par->color_primaries = codec->color_primaries; |
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par->color_trc = codec->color_trc; |
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par->color_space = codec->colorspace; |
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par->chroma_location = codec->chroma_sample_location; |
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par->sample_aspect_ratio = codec->sample_aspect_ratio; |
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par->video_delay = codec->has_b_frames; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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par->format = codec->sample_fmt; |
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par->channel_layout = codec->channel_layout; |
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par->channels = codec->channels; |
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par->sample_rate = codec->sample_rate; |
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par->block_align = codec->block_align; |
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par->frame_size = codec->frame_size; |
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par->initial_padding = codec->initial_padding; |
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par->trailing_padding = codec->trailing_padding; |
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par->seek_preroll = codec->seek_preroll; |
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break; |
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case AVMEDIA_TYPE_SUBTITLE: |
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par->width = codec->width; |
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par->height = codec->height; |
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break; |
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} |
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if (codec->extradata) { |
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par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); |
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if (!par->extradata) |
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return AVERROR(ENOMEM); |
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memcpy(par->extradata, codec->extradata, codec->extradata_size); |
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par->extradata_size = codec->extradata_size; |
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} |
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return 0; |
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} |
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int avcodec_parameters_to_context(AVCodecContext *codec, |
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const AVCodecParameters *par) |
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{ |
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codec->codec_type = par->codec_type; |
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codec->codec_id = par->codec_id; |
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codec->codec_tag = par->codec_tag; |
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codec->bit_rate = par->bit_rate; |
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codec->bits_per_coded_sample = par->bits_per_coded_sample; |
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codec->bits_per_raw_sample = par->bits_per_raw_sample; |
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codec->profile = par->profile; |
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codec->level = par->level; |
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switch (par->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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codec->pix_fmt = par->format; |
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codec->width = par->width; |
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codec->height = par->height; |
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codec->field_order = par->field_order; |
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codec->color_range = par->color_range; |
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codec->color_primaries = par->color_primaries; |
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codec->color_trc = par->color_trc; |
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codec->colorspace = par->color_space; |
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codec->chroma_sample_location = par->chroma_location; |
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codec->sample_aspect_ratio = par->sample_aspect_ratio; |
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codec->has_b_frames = par->video_delay; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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codec->sample_fmt = par->format; |
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codec->channel_layout = par->channel_layout; |
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codec->channels = par->channels; |
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codec->sample_rate = par->sample_rate; |
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codec->block_align = par->block_align; |
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codec->frame_size = par->frame_size; |
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codec->delay = |
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codec->initial_padding = par->initial_padding; |
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codec->trailing_padding = par->trailing_padding; |
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codec->seek_preroll = par->seek_preroll; |
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break; |
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case AVMEDIA_TYPE_SUBTITLE: |
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codec->width = par->width; |
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codec->height = par->height; |
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break; |
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} |
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if (par->extradata) { |
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av_freep(&codec->extradata); |
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codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); |
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if (!codec->extradata) |
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return AVERROR(ENOMEM); |
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memcpy(codec->extradata, par->extradata, par->extradata_size); |
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codec->extradata_size = par->extradata_size; |
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} |
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return 0; |
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} |
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