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), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
53 { "channels", "", offsetof(RawAudioDemuxerContext, channels), AV_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 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
67 .priv_data_size = sizeof(RawAudioDemuxerContext), \
68 .read_header = ff_raw_read_header, \
69 .read_packet = raw_read_packet, \
70 .read_seek = ff_pcm_read_seek, \
71 .flags = AVFMT_GENERIC_INDEX, \
73 .raw_codec_id = codec, \
74 .priv_class = &name_ ## _demuxer_class, \
77 PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
78 NULL, CODEC_ID_PCM_F64BE)
80 PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
81 NULL, CODEC_ID_PCM_F64LE)
83 PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
84 NULL, CODEC_ID_PCM_F32BE)
86 PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
87 NULL, CODEC_ID_PCM_F32LE)
89 PCMDEF(s32be, "PCM signed 32 bit big-endian format",
90 NULL, CODEC_ID_PCM_S32BE)
92 PCMDEF(s32le, "PCM signed 32 bit little-endian format",
93 NULL, CODEC_ID_PCM_S32LE)
95 PCMDEF(s24be, "PCM signed 24 bit big-endian format",
96 NULL, CODEC_ID_PCM_S24BE)
98 PCMDEF(s24le, "PCM signed 24 bit little-endian format",
99 NULL, CODEC_ID_PCM_S24LE)
101 PCMDEF(s16be, "PCM signed 16 bit big-endian format",
102 AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
104 PCMDEF(s16le, "PCM signed 16 bit little-endian format",
105 AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
107 PCMDEF(s8, "PCM signed 8 bit format",
108 "sb", CODEC_ID_PCM_S8)
110 PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
111 NULL, CODEC_ID_PCM_U32BE)
113 PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
114 NULL, CODEC_ID_PCM_U32LE)
116 PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
117 NULL, CODEC_ID_PCM_U24BE)
119 PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
120 NULL, CODEC_ID_PCM_U24LE)
122 PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
123 AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
125 PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
126 AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
128 PCMDEF(u8, "PCM unsigned 8 bit format",
129 "ub", CODEC_ID_PCM_U8)
131 PCMDEF(alaw, "PCM A-law format",
132 "al", CODEC_ID_PCM_ALAW)
134 PCMDEF(mulaw, "PCM mu-law format",
135 "ul", CODEC_ID_PCM_MULAW)