09c2d08c
 Hu Chunming
arm交付版
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/*
* Copyright (C) 2017 foo86
*
* 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
*/
#include "dolby_e.h"
#include "get_bits.h"
#include "put_bits.h"
typedef struct DBEParseContext {
DBEContext dectx;
} DBEParseContext;
static int dolby_e_parse(AVCodecParserContext *s2, AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
DBEParseContext *s1 = s2->priv_data;
DBEContext *s = &s1->dectx;
int ret;
if ((ret = ff_dolby_e_parse_header(s, buf, buf_size)) < 0)
goto end;
s2->duration = FRAME_SAMPLES;
switch (s->metadata.nb_channels) {
case 4:
avctx->channel_layout = AV_CH_LAYOUT_4POINT0;
break;
case 6:
avctx->channel_layout = AV_CH_LAYOUT_5POINT1;
break;
case 8:
avctx->channel_layout = AV_CH_LAYOUT_7POINT1;
break;
}
avctx->channels = s->metadata.nb_channels;
avctx->sample_rate = s->metadata.sample_rate;
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
end:
/* always return the full packet. this parser isn't doing any splitting or
combining, only packet analysis */
*poutbuf = buf;
*poutbuf_size = buf_size;
return buf_size;
}
AVCodecParser ff_dolby_e_parser = {
.codec_ids = { AV_CODEC_ID_DOLBY_E },
.priv_data_size = sizeof(DBEParseContext),
.parser_parse = dolby_e_parse,
};
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