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"
28 #define RAW_SAMPLES 1024
30 static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
33 // AVStream *st = s->streams[0];
35 size= RAW_SAMPLES*s->streams[0]->codec->block_align;
37 ret= av_get_packet(s->pb, pkt, size);
39 pkt->stream_index = 0;
43 bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
44 assert(bps); // if false there IS a bug elsewhere (NOT in this function)
46 pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
51 static const AVOption pcm_options[] = {
52 { "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
53 { "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
57 #define PCMDEF(name, long_name, ext, codec) \
58 static const AVClass name ## _demuxer_class = {\
59 .class_name = #name " demuxer",\
60 .item_name = av_default_item_name,\
61 .option = pcm_options,\
62 .version = LIBAVUTIL_VERSION_INT,\
64 AVInputFormat ff_pcm_ ## name ## _demuxer = {\
66 NULL_IF_CONFIG_SMALL(long_name),\
67 sizeof(RawAudioDemuxerContext),\
73 .flags= AVFMT_GENERIC_INDEX,\
76 .priv_class = &name ## _demuxer_class,\
79 PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
80 NULL, CODEC_ID_PCM_F64BE)
82 PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
83 NULL, CODEC_ID_PCM_F64LE)
85 PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
86 NULL, CODEC_ID_PCM_F32BE)
88 PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
89 NULL, CODEC_ID_PCM_F32LE)
91 PCMDEF(s32be, "PCM signed 32 bit big-endian format",
92 NULL, CODEC_ID_PCM_S32BE)
94 PCMDEF(s32le, "PCM signed 32 bit little-endian format",
95 NULL, CODEC_ID_PCM_S32LE)
97 PCMDEF(s24be, "PCM signed 24 bit big-endian format",
98 NULL, CODEC_ID_PCM_S24BE)
100 PCMDEF(s24le, "PCM signed 24 bit little-endian format",
101 NULL, CODEC_ID_PCM_S24LE)
103 PCMDEF(s16be, "PCM signed 16 bit big-endian format",
104 AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
106 PCMDEF(s16le, "PCM signed 16 bit little-endian format",
107 AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
109 PCMDEF(s8, "PCM signed 8 bit format",
110 "sb", CODEC_ID_PCM_S8)
112 PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
113 NULL, CODEC_ID_PCM_U32BE)
115 PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
116 NULL, CODEC_ID_PCM_U32LE)
118 PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
119 NULL, CODEC_ID_PCM_U24BE)
121 PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
122 NULL, CODEC_ID_PCM_U24LE)
124 PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
125 AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
127 PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
128 AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
130 PCMDEF(u8, "PCM unsigned 8 bit format",
131 "ub", CODEC_ID_PCM_U8)
133 PCMDEF(alaw, "PCM A-law format",
134 "al", CODEC_ID_PCM_ALAW)
136 PCMDEF(mulaw, "PCM mu-law format",
137 "ul", CODEC_ID_PCM_MULAW)