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https://github.com/FFmpeg/FFmpeg.git
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fa3ab43fec
Parsers are not forced to use a ParseContext and the other stuff from parser.h which is just designed to help parsers recombining frames. But this parser does not do this at all, i.e. the ParseContext is unused. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
75 lines
2.2 KiB
C
75 lines
2.2 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 "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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DolbyEHeaderInfo metadata;
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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_init(s, buf, buf_size)) < 0)
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goto end;
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if ((ret = ff_dolby_e_parse_header(s, &s1->metadata)) < 0)
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goto end;
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s2->duration = FRAME_SAMPLES;
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switch (s1->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 = s1->metadata.nb_channels;
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avctx->sample_rate = sample_rate_tab[s1->metadata.fr_code];
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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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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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