1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* RAW PCM demuxers
* Copyright (c) 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "rawdec.h"
#include "pcm.h"
#define RAW_SAMPLES 1024
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
{
int ret, size, bps;
// AVStream *st = s->streams[0];
size= RAW_SAMPLES*s->streams[0]->codec->block_align;
ret= av_get_packet(s->pb, pkt, size);
pkt->stream_index = 0;
if (ret < 0)
return ret;
bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
assert(bps); // if false there IS a bug elsewhere (NOT in this function)
pkt->dts=
pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
return ret;
}
#define PCMDEF(name, long_name, ext, codec) \
AVInputFormat ff_pcm_ ## name ## _demuxer = {\
#name,\
NULL_IF_CONFIG_SMALL(long_name),\
sizeof(RawAudioDemuxerContext),\
NULL,\
ff_raw_read_header,\
raw_read_packet,\
NULL,\
pcm_read_seek,\
.flags= AVFMT_GENERIC_INDEX,\
.extensions = ext,\
.value = codec,\
.priv_class = &ff_rawaudio_demuxer_class,\
};
PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
NULL, CODEC_ID_PCM_F64BE)
PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
NULL, CODEC_ID_PCM_F64LE)
PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
NULL, CODEC_ID_PCM_F32BE)
PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
NULL, CODEC_ID_PCM_F32LE)
PCMDEF(s32be, "PCM signed 32 bit big-endian format",
NULL, CODEC_ID_PCM_S32BE)
PCMDEF(s32le, "PCM signed 32 bit little-endian format",
NULL, CODEC_ID_PCM_S32LE)
PCMDEF(s24be, "PCM signed 24 bit big-endian format",
NULL, CODEC_ID_PCM_S24BE)
PCMDEF(s24le, "PCM signed 24 bit little-endian format",
NULL, CODEC_ID_PCM_S24LE)
PCMDEF(s16be, "PCM signed 16 bit big-endian format",
AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
PCMDEF(s16le, "PCM signed 16 bit little-endian format",
AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
PCMDEF(s8, "PCM signed 8 bit format",
"sb", CODEC_ID_PCM_S8)
PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
NULL, CODEC_ID_PCM_U32BE)
PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
NULL, CODEC_ID_PCM_U32LE)
PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
NULL, CODEC_ID_PCM_U24BE)
PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
NULL, CODEC_ID_PCM_U24LE)
PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
PCMDEF(u8, "PCM unsigned 8 bit format",
"ub", CODEC_ID_PCM_U8)
PCMDEF(alaw, "PCM A-law format",
"al", CODEC_ID_PCM_ALAW)
PCMDEF(mulaw, "PCM mu-law format",
"ul", CODEC_ID_PCM_MULAW)
|
