3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * 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.
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
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/avassert.h"
29 #define RAW_SAMPLES 1024
31 static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
34 // AVStream *st = s->streams[0];
36 size= RAW_SAMPLES*s->streams[0]->codec->block_align;
38 ret= av_get_packet(s->pb, pkt, size);
40 pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
41 pkt->stream_index = 0;
45 bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
46 av_assert1(bps); // if false there IS a bug elsewhere (NOT in this function)
48 pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
53 static const AVOption pcm_options[] = {
54 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
55 { "channels", "", offsetof(RawAudioDemuxerContext, channels), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
59 #define PCMDEF(name_, long_name_, ext, codec) \
60 static const AVClass name_ ## _demuxer_class = { \
61 .class_name = #name_ " demuxer", \
62 .item_name = av_default_item_name, \
63 .option = pcm_options, \
64 .version = LIBAVUTIL_VERSION_INT, \
66 AVInputFormat ff_pcm_ ## name_ ## _demuxer = { \
68 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
69 .priv_data_size = sizeof(RawAudioDemuxerContext), \
70 .read_header = ff_raw_read_header, \
71 .read_packet = raw_read_packet, \
72 .read_seek = ff_pcm_read_seek, \
73 .flags = AVFMT_GENERIC_INDEX, \
75 .raw_codec_id = codec, \
76 .priv_class = &name_ ## _demuxer_class, \
79 PCMDEF(f64be, "PCM 64-bit floating-point big-endian",
80 NULL, AV_CODEC_ID_PCM_F64BE)
82 PCMDEF(f64le, "PCM 64-bit floating-point little-endian",
83 NULL, AV_CODEC_ID_PCM_F64LE)
85 PCMDEF(f32be, "PCM 32-bit floating-point big-endian",
86 NULL, AV_CODEC_ID_PCM_F32BE)
88 PCMDEF(f32le, "PCM 32-bit floating-point little-endian",
89 NULL, AV_CODEC_ID_PCM_F32LE)
91 PCMDEF(s32be, "PCM signed 32-bit big-endian",
92 NULL, AV_CODEC_ID_PCM_S32BE)
94 PCMDEF(s32le, "PCM signed 32-bit little-endian",
95 NULL, AV_CODEC_ID_PCM_S32LE)
97 PCMDEF(s24be, "PCM signed 24-bit big-endian",
98 NULL, AV_CODEC_ID_PCM_S24BE)
100 PCMDEF(s24le, "PCM signed 24-bit little-endian",
101 NULL, AV_CODEC_ID_PCM_S24LE)
103 PCMDEF(s16be, "PCM signed 16-bit big-endian",
104 AV_NE("sw", NULL), AV_CODEC_ID_PCM_S16BE)
106 PCMDEF(s16le, "PCM signed 16-bit little-endian",
107 AV_NE(NULL, "sw"), AV_CODEC_ID_PCM_S16LE)
109 PCMDEF(s8, "PCM signed 8-bit",
110 "sb", AV_CODEC_ID_PCM_S8)
112 PCMDEF(u32be, "PCM unsigned 32-bit big-endian",
113 NULL, AV_CODEC_ID_PCM_U32BE)
115 PCMDEF(u32le, "PCM unsigned 32-bit little-endian",
116 NULL, AV_CODEC_ID_PCM_U32LE)
118 PCMDEF(u24be, "PCM unsigned 24-bit big-endian",
119 NULL, AV_CODEC_ID_PCM_U24BE)
121 PCMDEF(u24le, "PCM unsigned 24-bit little-endian",
122 NULL, AV_CODEC_ID_PCM_U24LE)
124 PCMDEF(u16be, "PCM unsigned 16-bit big-endian",
125 AV_NE("uw", NULL), AV_CODEC_ID_PCM_U16BE)
127 PCMDEF(u16le, "PCM unsigned 16-bit little-endian",
128 AV_NE(NULL, "uw"), AV_CODEC_ID_PCM_U16LE)
130 PCMDEF(u8, "PCM unsigned 8-bit",
131 "ub", AV_CODEC_ID_PCM_U8)
133 PCMDEF(alaw, "PCM A-law",
134 "al", AV_CODEC_ID_PCM_ALAW)
136 PCMDEF(mulaw, "PCM mu-law",
137 "ul", AV_CODEC_ID_PCM_MULAW)