2 * Copyright (C) 2017 foo86
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 typedef struct DBEParseContext {
31 DolbyEHeaderInfo metadata;
34 static int dolby_e_parse(AVCodecParserContext *s2, AVCodecContext *avctx,
35 const uint8_t **poutbuf, int *poutbuf_size,
36 const uint8_t *buf, int buf_size)
38 DBEParseContext *s1 = s2->priv_data;
39 DBEContext *s = &s1->dectx;
42 if ((ret = ff_dolby_e_parse_init(s, buf, buf_size)) < 0)
45 if ((ret = ff_dolby_e_parse_header(s, &s1->metadata)) < 0)
48 s2->duration = FRAME_SAMPLES;
49 switch (s1->metadata.nb_channels) {
51 avctx->channel_layout = AV_CH_LAYOUT_4POINT0;
54 avctx->channel_layout = AV_CH_LAYOUT_5POINT1;
57 avctx->channel_layout = AV_CH_LAYOUT_7POINT1;
61 avctx->channels = s1->metadata.nb_channels;
62 avctx->sample_rate = sample_rate_tab[s1->metadata.fr_code];
63 avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
66 /* always return the full packet. this parser isn't doing any splitting or
67 combining, only packet analysis */
69 *poutbuf_size = buf_size;
73 AVCodecParser ff_dolby_e_parser = {
74 .codec_ids = { AV_CODEC_ID_DOLBY_E },
75 .priv_data_size = sizeof(DBEParseContext),
76 .parser_parse = dolby_e_parse,
77 .parser_close = ff_parse_close,