77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/*
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* Audio Vivid Codec
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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/samplefmt.h"
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#include "libavutil/intreadwrite.h"
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#include "parser.h"
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#include "get_bits.h"
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#include "libavcodec/av3a.h"
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typedef struct AVS3AudioParseContext
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{
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int frame_size;
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int bitdepth;
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int sample_rate;
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uint64_t bit_rate;
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uint16_t channels;
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uint64_t channel_layout;
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} AVS3AParseContext;
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static int raw_av3a_parse(AVCodecParserContext *s, 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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int ret = 0;
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uint8_t header[MAX_NBYTES_FRAME_HEADER];
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AVS3AHeaderInfo hdf;
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if (buf_size < MAX_NBYTES_FRAME_HEADER) {
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return buf_size;
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}
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memcpy(header, buf, MAX_NBYTES_FRAME_HEADER);
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// read frame header
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if ((ret = read_av3a_frame_header(&hdf, header, MAX_NBYTES_FRAME_HEADER)) != 0) {
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return ret;
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}
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avctx->sample_rate = hdf.sample_rate;
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avctx->bit_rate = hdf.total_bitrate;
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avctx->channels = hdf.total_channels;
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avctx->channel_layout = hdf.channel_layout;
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avctx->frame_size = AVS3_AUDIO_FRAME_SIZE;
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s->format = hdf.bitdepth;
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/* return the full packet */
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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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#if CONFIG_AV3A_PARSER
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AVCodecParser ff_av3a_parser = {
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.codec_ids = {AV_CODEC_ID_AVS3_AUDIO},
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.priv_data_size = sizeof(AVS3AParseContext),
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.parser_parse = raw_av3a_parse,
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};
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#endif
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