Statistics
| Branch: | Revision:

ffmpeg / libavformat / pcmdec.c @ 6cc7f139

History | View | Annotate | Download (3.47 KB)

1 e94204df Aurelien Jacobs
/*
2
 * RAW PCM demuxers
3
 * Copyright (c) 2002 Fabrice Bellard
4
 *
5 2912e87a Mans Rullgard
 * This file is part of Libav.
6 e94204df Aurelien Jacobs
 *
7 2912e87a Mans Rullgard
 * Libav is free software; you can redistribute it and/or
8 e94204df Aurelien Jacobs
 * 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 2912e87a Mans Rullgard
 * Libav is distributed in the hope that it will be useful,
13 e94204df Aurelien Jacobs
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18 2912e87a Mans Rullgard
 * License along with Libav; if not, write to the Free Software
19 e94204df Aurelien Jacobs
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22
#include "avformat.h"
23 4ca31edc Aurelien Jacobs
#include "rawdec.h"
24 e94204df Aurelien Jacobs
#include "pcm.h"
25
26
#define RAW_SAMPLES     1024
27
28
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
29
{
30
    int ret, size, bps;
31
    //    AVStream *st = s->streams[0];
32
33
    size= RAW_SAMPLES*s->streams[0]->codec->block_align;
34
35
    ret= av_get_packet(s->pb, pkt, size);
36
37
    pkt->stream_index = 0;
38
    if (ret < 0)
39
        return ret;
40
41
    bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
42
    assert(bps); // if false there IS a bug elsewhere (NOT in this function)
43
    pkt->dts=
44
    pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
45
46
    return ret;
47
}
48
49
#define PCMDEF(name, long_name, ext, codec) \
50 c6610a21 Diego Elio Pettenò
AVInputFormat ff_pcm_ ## name ## _demuxer = {\
51 e94204df Aurelien Jacobs
    #name,\
52
    NULL_IF_CONFIG_SMALL(long_name),\
53
    0,\
54
    NULL,\
55
    ff_raw_read_header,\
56
    raw_read_packet,\
57
    NULL,\
58
    pcm_read_seek,\
59
    .flags= AVFMT_GENERIC_INDEX,\
60
    .extensions = ext,\
61
    .value = codec,\
62
};
63
64
PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
65
       NULL, CODEC_ID_PCM_F64BE)
66
67
PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
68
       NULL, CODEC_ID_PCM_F64LE)
69
70
PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
71
       NULL, CODEC_ID_PCM_F32BE)
72
73
PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
74
       NULL, CODEC_ID_PCM_F32LE)
75
76
PCMDEF(s32be, "PCM signed 32 bit big-endian format",
77
       NULL, CODEC_ID_PCM_S32BE)
78
79
PCMDEF(s32le, "PCM signed 32 bit little-endian format",
80
       NULL, CODEC_ID_PCM_S32LE)
81
82
PCMDEF(s24be, "PCM signed 24 bit big-endian format",
83
       NULL, CODEC_ID_PCM_S24BE)
84
85
PCMDEF(s24le, "PCM signed 24 bit little-endian format",
86
       NULL, CODEC_ID_PCM_S24LE)
87
88
PCMDEF(s16be, "PCM signed 16 bit big-endian format",
89
       AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
90
91
PCMDEF(s16le, "PCM signed 16 bit little-endian format",
92
       AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
93
94
PCMDEF(s8, "PCM signed 8 bit format",
95
       "sb", CODEC_ID_PCM_S8)
96
97
PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
98
       NULL, CODEC_ID_PCM_U32BE)
99
100
PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
101
       NULL, CODEC_ID_PCM_U32LE)
102
103
PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
104
       NULL, CODEC_ID_PCM_U24BE)
105
106
PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
107
       NULL, CODEC_ID_PCM_U24LE)
108
109
PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
110
       AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
111
112
PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
113
       AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
114
115
PCMDEF(u8, "PCM unsigned 8 bit format",
116
       "ub", CODEC_ID_PCM_U8)
117
118
PCMDEF(alaw, "PCM A-law format",
119
       "al", CODEC_ID_PCM_ALAW)
120
121
PCMDEF(mulaw, "PCM mu-law format",
122
       "ul", CODEC_ID_PCM_MULAW)