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1 /*
2  * D-Cinema audio demuxer
3  * Copyright (c) 2005 Reimar Döffinger
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
23 #include "avformat.h"
27  if (!st)
28  return AVERROR(ENOMEM);
31  st->codecpar->codec_tag = MKTAG('d', 'a', 'u', 'd');
32  st->codecpar->channels = 6;
34  st->codecpar->sample_rate = 96000;
35  st->codecpar->bit_rate = 3 * 6 * 96000 * 8;
36  st->codecpar->block_align = 3 * 6;
38  return 0;
39 }
42  AVIOContext *pb = s->pb;
43  int ret, size;
44  if (avio_feof(pb))
45  return AVERROR(EIO);
46  size = avio_rb16(pb);
47  avio_rb16(pb); // unknown
48  ret = av_get_packet(pb, pkt, size);
49  pkt->stream_index = 0;
50  return ret;
51 }
54  .name = "daud",
55  .long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
56  .read_header = daud_header,
57  .read_packet = daud_packet,
58  .extensions = "302,daud",
59 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:147
static int daud_header(AVFormatContext *s)
Definition: dauddec.c:25
AVInputFormat ff_daud_demuxer
Definition: dauddec.c:53
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3922
static AVPacket pkt
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:736
Format I/O context.
Definition: avformat.h:1325
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4065
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:260
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4024
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3951
static int daud_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dauddec.c:41
#define AVERROR(e)
Definition: error.h:43
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3918
int block_align
Audio only.
Definition: avcodec.h:4039
audio channel layout utility functions
Stream structure.
Definition: avformat.h:876
AVIOContext * pb
I/O context.
Definition: avformat.h:1367
int sample_rate
Audio only.
Definition: avcodec.h:4032
Main libavformat public API header.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:3964
int channels
Audio only.
Definition: avcodec.h:4028
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:660
AVCodecParameters * codecpar
Definition: avformat.h:1006
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:328
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3926
int stream_index
Definition: avcodec.h:1582
#define MKTAG(a, b, c, d)
Definition: common.h:342
This structure stores compressed data.
Definition: avcodec.h:1557