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74 lines
2.3 KiB
74 lines
2.3 KiB
/* |
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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 "libavutil/channel_layout.h" |
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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->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_4POINT0; |
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break; |
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case 6: |
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avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT1; |
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break; |
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case 8: |
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avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_7POINT1; |
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break; |
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default: |
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avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; |
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avctx->ch_layout.nb_channels = s->metadata.nb_channels; |
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break; |
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} |
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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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