mirror of
https://github.com/FFmpeg/FFmpeg.git
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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright (C) 2017 foo86
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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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#include "avcodec.h"
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#include "dolby_e.h"
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#include "get_bits.h"
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#include "put_bits.h"
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typedef struct DBEParseContext {
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DBEContext dectx;
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} DBEParseContext;
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static int dolby_e_parse(AVCodecParserContext *s2, AVCodecContext *avctx,
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const uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size)
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{
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DBEParseContext *s1 = s2->priv_data;
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DBEContext *s = &s1->dectx;
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int ret;
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if ((ret = ff_dolby_e_parse_header(s, buf, buf_size)) < 0)
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goto end;
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s2->duration = FRAME_SAMPLES;
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switch (s->metadata.nb_channels) {
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case 4:
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avctx->channel_layout = AV_CH_LAYOUT_4POINT0;
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break;
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case 6:
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avctx->channel_layout = AV_CH_LAYOUT_5POINT1;
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break;
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case 8:
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avctx->channel_layout = AV_CH_LAYOUT_7POINT1;
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break;
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}
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avctx->channels = s->metadata.nb_channels;
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avctx->sample_rate = s->metadata.sample_rate;
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avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
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end:
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/* always return the full packet. this parser isn't doing any splitting or
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combining, only packet analysis */
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*poutbuf = buf;
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*poutbuf_size = buf_size;
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return buf_size;
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}
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const AVCodecParser ff_dolby_e_parser = {
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.codec_ids = { AV_CODEC_ID_DOLBY_E },
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.priv_data_size = sizeof(DBEParseContext),
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.parser_parse = dolby_e_parse,
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};
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