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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * RAW PCM demuxers |
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| 3 | * Copyright (c) 2002 Fabrice Bellard |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "avformat.h" |
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| 23 | #include "internal.h" |
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| 24 | #include "pcm.h" |
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| 25 | #include "libavutil/log.h" |
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| 26 | #include "libavutil/opt.h" |
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| 27 | #include "libavutil/avassert.h" |
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| 28 | |||
| 29 | typedef struct PCMAudioDemuxerContext { |
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| 30 | AVClass *class; |
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| 31 | int sample_rate; |
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| 32 | int channels; |
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| 33 | } PCMAudioDemuxerContext; |
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| 34 | |||
| 35 | static int pcm_read_header(AVFormatContext *s) |
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| 36 | { |
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| 37 | PCMAudioDemuxerContext *s1 = s->priv_data; |
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| 38 | AVStream *st; |
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| 39 | |||
| 40 | st = avformat_new_stream(s, NULL); |
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| 41 | if (!st) |
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| 42 | return AVERROR(ENOMEM); |
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| 43 | |||
| 44 | |||
| 45 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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| 46 | st->codec->codec_id = s->iformat->raw_codec_id; |
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| 47 | st->codec->sample_rate = s1->sample_rate; |
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| 48 | st->codec->channels = s1->channels; |
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| 49 | |||
| 50 | st->codec->bits_per_coded_sample = |
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| 51 | av_get_bits_per_sample(st->codec->codec_id); |
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| 52 | |||
| 53 | av_assert0(st->codec->bits_per_coded_sample > 0); |
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| 54 | |||
| 55 | st->codec->block_align = |
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| 56 | st->codec->bits_per_coded_sample * st->codec->channels / 8; |
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| 57 | |||
| 58 | avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); |
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| 59 | return 0; |
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| 60 | } |
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| 61 | |||
| 62 | static const AVOption pcm_options[] = { |
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| 63 | { "sample_rate", "", offsetof(PCMAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.i64 = 44100}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
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| 64 | { "channels", "", offsetof(PCMAudioDemuxerContext, channels), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
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| 65 | { NULL }, |
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| 66 | }; |
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| 67 | |||
| 68 | #define PCMDEF(name_, long_name_, ext, codec) \ |
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| 69 | static const AVClass name_ ## _demuxer_class = { \ |
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| 70 | .class_name = #name_ " demuxer", \ |
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| 71 | .item_name = av_default_item_name, \ |
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| 72 | .option = pcm_options, \ |
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| 73 | .version = LIBAVUTIL_VERSION_INT, \ |
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| 74 | }; \ |
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| 75 | AVInputFormat ff_pcm_ ## name_ ## _demuxer = { \ |
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| 76 | .name = #name_, \ |
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| 77 | .long_name = NULL_IF_CONFIG_SMALL(long_name_), \ |
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| 78 | .priv_data_size = sizeof(PCMAudioDemuxerContext), \ |
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| 79 | .read_header = pcm_read_header, \ |
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| 80 | .read_packet = ff_pcm_read_packet, \ |
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| 81 | .read_seek = ff_pcm_read_seek, \ |
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| 82 | .flags = AVFMT_GENERIC_INDEX, \ |
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| 83 | .extensions = ext, \ |
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| 84 | .raw_codec_id = codec, \ |
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| 85 | .priv_class = &name_ ## _demuxer_class, \ |
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| 86 | }; |
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| 87 | |||
| 88 | PCMDEF(f64be, "PCM 64-bit floating-point big-endian", |
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| 89 | NULL, AV_CODEC_ID_PCM_F64BE) |
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| 90 | |||
| 91 | PCMDEF(f64le, "PCM 64-bit floating-point little-endian", |
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| 92 | NULL, AV_CODEC_ID_PCM_F64LE) |
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| 93 | |||
| 94 | PCMDEF(f32be, "PCM 32-bit floating-point big-endian", |
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| 95 | NULL, AV_CODEC_ID_PCM_F32BE) |
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| 96 | |||
| 97 | PCMDEF(f32le, "PCM 32-bit floating-point little-endian", |
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| 98 | NULL, AV_CODEC_ID_PCM_F32LE) |
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| 99 | |||
| 100 | PCMDEF(s32be, "PCM signed 32-bit big-endian", |
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| 101 | NULL, AV_CODEC_ID_PCM_S32BE) |
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| 102 | |||
| 103 | PCMDEF(s32le, "PCM signed 32-bit little-endian", |
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| 104 | NULL, AV_CODEC_ID_PCM_S32LE) |
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| 105 | |||
| 106 | PCMDEF(s24be, "PCM signed 24-bit big-endian", |
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| 107 | NULL, AV_CODEC_ID_PCM_S24BE) |
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| 108 | |||
| 109 | PCMDEF(s24le, "PCM signed 24-bit little-endian", |
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| 110 | NULL, AV_CODEC_ID_PCM_S24LE) |
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| 111 | |||
| 112 | PCMDEF(s16be, "PCM signed 16-bit big-endian", |
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| 113 | AV_NE("sw", NULL), AV_CODEC_ID_PCM_S16BE) |
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| 114 | |||
| 115 | PCMDEF(s16le, "PCM signed 16-bit little-endian", |
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| 116 | AV_NE(NULL, "sw"), AV_CODEC_ID_PCM_S16LE) |
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| 117 | |||
| 118 | PCMDEF(s8, "PCM signed 8-bit", |
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| 119 | "sb", AV_CODEC_ID_PCM_S8) |
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| 120 | |||
| 121 | PCMDEF(u32be, "PCM unsigned 32-bit big-endian", |
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| 122 | NULL, AV_CODEC_ID_PCM_U32BE) |
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| 123 | |||
| 124 | PCMDEF(u32le, "PCM unsigned 32-bit little-endian", |
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| 125 | NULL, AV_CODEC_ID_PCM_U32LE) |
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| 126 | |||
| 127 | PCMDEF(u24be, "PCM unsigned 24-bit big-endian", |
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| 128 | NULL, AV_CODEC_ID_PCM_U24BE) |
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| 129 | |||
| 130 | PCMDEF(u24le, "PCM unsigned 24-bit little-endian", |
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| 131 | NULL, AV_CODEC_ID_PCM_U24LE) |
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| 132 | |||
| 133 | PCMDEF(u16be, "PCM unsigned 16-bit big-endian", |
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| 134 | AV_NE("uw", NULL), AV_CODEC_ID_PCM_U16BE) |
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| 135 | |||
| 136 | PCMDEF(u16le, "PCM unsigned 16-bit little-endian", |
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| 137 | AV_NE(NULL, "uw"), AV_CODEC_ID_PCM_U16LE) |
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| 138 | |||
| 139 | PCMDEF(u8, "PCM unsigned 8-bit", |
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| 140 | "ub", AV_CODEC_ID_PCM_U8) |
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| 141 | |||
| 142 | PCMDEF(alaw, "PCM A-law", |
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| 143 | "al", AV_CODEC_ID_PCM_ALAW) |
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| 144 | |||
| 145 | PCMDEF(mulaw, "PCM mu-law", |
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| 146 | "ul", AV_CODEC_ID_PCM_MULAW) |