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75 lines
2.1 KiB
75 lines
2.1 KiB
/* |
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* Copyright (c) 2013-2014 Mozilla Corporation |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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* Opus parser |
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* |
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* Determines the duration for each packet. |
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*/ |
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#include "avcodec.h" |
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#include "opus.h" |
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typedef struct OpusParseContext { |
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OpusContext ctx; |
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OpusPacket pkt; |
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int extradata_parsed; |
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} OpusParseContext; |
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static int opus_parse(AVCodecParserContext *ctx, 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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OpusParseContext *s = ctx->priv_data; |
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int ret; |
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if (!buf_size) |
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return 0; |
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if (avctx->extradata && !s->extradata_parsed) { |
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ret = ff_opus_parse_extradata(avctx, &s->ctx); |
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if (ret < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Error parsing Ogg extradata.\n"); |
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goto fail; |
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} |
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av_freep(&s->ctx.channel_maps); |
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s->extradata_parsed = 1; |
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} |
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ret = ff_opus_parse_packet(&s->pkt, buf, buf_size, s->ctx.nb_streams > 1); |
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if (ret < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Error parsing Opus packet header.\n"); |
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goto fail; |
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} |
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ctx->duration = s->pkt.frame_count * s->pkt.frame_duration; |
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fail: |
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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_opus_parser = { |
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.codec_ids = { AV_CODEC_ID_OPUS }, |
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.priv_data_size = sizeof(OpusParseContext), |
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.parser_parse = opus_parse, |
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};
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