| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RAW PCM demuxers | ||
| 3 | * Copyright (c) 2002 Fabrice Bellard | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 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. | ||
| 11 | * | ||
| 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. | ||
| 16 | * | ||
| 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 | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "config_components.h" | ||
| 23 | |||
| 24 | #include "libavutil/avstring.h" | ||
| 25 | #include "libavutil/channel_layout.h" | ||
| 26 | #include "libavutil/mem.h" | ||
| 27 | #include "avformat.h" | ||
| 28 | #include "demux.h" | ||
| 29 | #include "internal.h" | ||
| 30 | #include "pcm.h" | ||
| 31 | #include "libavutil/log.h" | ||
| 32 | #include "libavutil/opt.h" | ||
| 33 | #include "libavutil/avassert.h" | ||
| 34 | |||
| 35 | typedef struct PCMAudioDemuxerContext { | ||
| 36 | AVClass *class; | ||
| 37 | int sample_rate; | ||
| 38 | AVChannelLayout ch_layout; | ||
| 39 | } PCMAudioDemuxerContext; | ||
| 40 | |||
| 41 | 69 | static int pcm_read_header(AVFormatContext *s) | |
| 42 | { | ||
| 43 | 69 | PCMAudioDemuxerContext *s1 = s->priv_data; | |
| 44 | AVCodecParameters *par; | ||
| 45 | AVStream *st; | ||
| 46 | 69 | uint8_t *mime_type = NULL; | |
| 47 | int ret; | ||
| 48 | |||
| 49 | 69 | st = avformat_new_stream(s, NULL); | |
| 50 |
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69 | if (!st) |
| 51 | ✗ | return AVERROR(ENOMEM); | |
| 52 | 69 | par = st->codecpar; | |
| 53 | |||
| 54 | 69 | par->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 55 | 69 | par->codec_id = ffifmt(s->iformat)->raw_codec_id; | |
| 56 | 69 | par->sample_rate = s1->sample_rate; | |
| 57 | 69 | ret = av_channel_layout_copy(&par->ch_layout, &s1->ch_layout); | |
| 58 |
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69 | if (ret < 0) |
| 59 | ✗ | return ret; | |
| 60 | |||
| 61 | 69 | av_opt_get(s->pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type); | |
| 62 |
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69 | if (mime_type && s->iformat->mime_type) { |
| 63 | ✗ | int rate = 0, channels = 0, little_endian = 0; | |
| 64 | const char *options; | ||
| 65 | ✗ | if (av_stristart(mime_type, s->iformat->mime_type, &options)) { /* audio/L16 */ | |
| 66 | ✗ | while (options = strchr(options, ';')) { | |
| 67 | ✗ | options++; | |
| 68 | ✗ | if (!rate) | |
| 69 | ✗ | sscanf(options, " rate=%d", &rate); | |
| 70 | ✗ | if (!channels) | |
| 71 | ✗ | sscanf(options, " channels=%d", &channels); | |
| 72 | ✗ | if (!little_endian) { | |
| 73 | char val[sizeof("little-endian")]; | ||
| 74 | ✗ | if (sscanf(options, " endianness=%13s", val) == 1) { | |
| 75 | ✗ | little_endian = strcmp(val, "little-endian") == 0; | |
| 76 | } | ||
| 77 | } | ||
| 78 | } | ||
| 79 | ✗ | if (rate <= 0) { | |
| 80 | ✗ | av_log(s, AV_LOG_ERROR, | |
| 81 | "Invalid sample_rate found in mime_type \"%s\"\n", | ||
| 82 | mime_type); | ||
| 83 | ✗ | av_freep(&mime_type); | |
| 84 | ✗ | return AVERROR_INVALIDDATA; | |
| 85 | } | ||
| 86 | ✗ | par->sample_rate = rate; | |
| 87 | ✗ | if (channels > 0) { | |
| 88 | ✗ | av_channel_layout_uninit(&par->ch_layout); | |
| 89 | ✗ | par->ch_layout.nb_channels = channels; | |
| 90 | } | ||
| 91 | ✗ | if (little_endian) | |
| 92 | ✗ | par->codec_id = AV_CODEC_ID_PCM_S16LE; | |
| 93 | } | ||
| 94 | } | ||
| 95 | 69 | av_freep(&mime_type); | |
| 96 | |||
| 97 | 69 | par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id); | |
| 98 | |||
| 99 |
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69 | av_assert0(par->bits_per_coded_sample > 0); |
| 100 | |||
| 101 | 69 | par->block_align = par->bits_per_coded_sample * par->ch_layout.nb_channels / 8; | |
| 102 | |||
| 103 | 69 | avpriv_set_pts_info(st, 64, 1, par->sample_rate); | |
| 104 | 69 | return 0; | |
| 105 | } | ||
| 106 | |||
| 107 | static const AVOption pcm_options[] = { | ||
| 108 | { "sample_rate", "", offsetof(PCMAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.i64 = 44100}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 109 | { "ch_layout", "", offsetof(PCMAudioDemuxerContext, ch_layout), AV_OPT_TYPE_CHLAYOUT, {.str = "mono"}, 0, 0, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 110 | { NULL }, | ||
| 111 | }; | ||
| 112 | static const AVClass pcm_demuxer_class = { | ||
| 113 | .class_name = "pcm demuxer", | ||
| 114 | .item_name = av_default_item_name, | ||
| 115 | .option = pcm_options, | ||
| 116 | .version = LIBAVUTIL_VERSION_INT, | ||
| 117 | }; | ||
| 118 | |||
| 119 | #define PCMDEF_0(name_, long_name_, ext, codec, ...) | ||
| 120 | #define PCMDEF_1(name_, long_name_, ext, codec, ...) \ | ||
| 121 | const FFInputFormat ff_pcm_ ## name_ ## _demuxer = { \ | ||
| 122 | .p.name = #name_, \ | ||
| 123 | .p.long_name = NULL_IF_CONFIG_SMALL(long_name_), \ | ||
| 124 | .p.flags = AVFMT_GENERIC_INDEX, \ | ||
| 125 | .p.extensions = ext, \ | ||
| 126 | .p.priv_class = &pcm_demuxer_class, \ | ||
| 127 | .priv_data_size = sizeof(PCMAudioDemuxerContext), \ | ||
| 128 | .read_header = pcm_read_header, \ | ||
| 129 | .read_packet = ff_pcm_read_packet, \ | ||
| 130 | .read_seek = ff_pcm_read_seek, \ | ||
| 131 | .raw_codec_id = codec, \ | ||
| 132 | __VA_ARGS__ \ | ||
| 133 | }; | ||
| 134 | #define PCMDEF_2(name, long_name, ext, codec, enabled, ...) \ | ||
| 135 | PCMDEF_ ## enabled(name, long_name, ext, codec, __VA_ARGS__) | ||
| 136 | #define PCMDEF_3(name, long_name, ext, codec, config, ...) \ | ||
| 137 | PCMDEF_2(name, long_name, ext, codec, config, __VA_ARGS__) | ||
| 138 | #define PCMDEF_EXT(name, long_name, ext, uppercase, ...) \ | ||
| 139 | PCMDEF_3(name, long_name, ext, AV_CODEC_ID_PCM_ ## uppercase, \ | ||
| 140 | CONFIG_PCM_ ## uppercase ## _DEMUXER, __VA_ARGS__) | ||
| 141 | #define PCMDEF(name, long_name, ext, uppercase) \ | ||
| 142 | PCMDEF_EXT(name, long_name, ext, uppercase, ) | ||
| 143 | |||
| 144 | PCMDEF(f64be, "PCM 64-bit floating-point big-endian", NULL, F64BE) | ||
| 145 | PCMDEF(f64le, "PCM 64-bit floating-point little-endian", NULL, F64LE) | ||
| 146 | PCMDEF(f32be, "PCM 32-bit floating-point big-endian", NULL, F32BE) | ||
| 147 | PCMDEF(f32le, "PCM 32-bit floating-point little-endian", NULL, F32LE) | ||
| 148 | PCMDEF(s32be, "PCM signed 32-bit big-endian", NULL, S32BE) | ||
| 149 | PCMDEF(s32le, "PCM signed 32-bit little-endian", NULL, S32LE) | ||
| 150 | PCMDEF(s24be, "PCM signed 24-bit big-endian", NULL, S24BE) | ||
| 151 | PCMDEF(s24le, "PCM signed 24-bit little-endian", NULL, S24LE) | ||
| 152 | PCMDEF_EXT(s16be, "PCM signed 16-bit big-endian", | ||
| 153 | AV_NE("sw", NULL), S16BE, .p.mime_type = "audio/L16") | ||
| 154 | PCMDEF(s16le, "PCM signed 16-bit little-endian", AV_NE(NULL, "sw"), S16LE) | ||
| 155 | PCMDEF(s8, "PCM signed 8-bit", "sb", S8) | ||
| 156 | PCMDEF(u32be, "PCM unsigned 32-bit big-endian", NULL, U32BE) | ||
| 157 | PCMDEF(u32le, "PCM unsigned 32-bit little-endian", NULL, U32LE) | ||
| 158 | PCMDEF(u24be, "PCM unsigned 24-bit big-endian", NULL, U24BE) | ||
| 159 | PCMDEF(u24le, "PCM unsigned 24-bit little-endian", NULL, U24LE) | ||
| 160 | PCMDEF(u16be, "PCM unsigned 16-bit big-endian", AV_NE("uw", NULL), U16BE) | ||
| 161 | PCMDEF(u16le, "PCM unsigned 16-bit little-endian", AV_NE(NULL, "uw"), U16LE) | ||
| 162 | PCMDEF(u8, "PCM unsigned 8-bit", "ub", U8) | ||
| 163 | PCMDEF(alaw, "PCM A-law", "al", ALAW) | ||
| 164 | PCMDEF(mulaw, "PCM mu-law", "ul", MULAW) | ||
| 165 | PCMDEF(vidc, "PCM Archimedes VIDC", NULL, VIDC) | ||
| 166 | |||
| 167 | #if CONFIG_SLN_DEMUXER | ||
| 168 | static const AVOption sln_options[] = { | ||
| 169 | { "sample_rate", "", offsetof(PCMAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.i64 = 8000}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 170 | { "ch_layout", "", offsetof(PCMAudioDemuxerContext, ch_layout), AV_OPT_TYPE_CHLAYOUT, {.str = "mono"}, 0, 0, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 171 | { NULL }, | ||
| 172 | }; | ||
| 173 | |||
| 174 | static const AVClass sln_demuxer_class = { | ||
| 175 | .class_name = "sln demuxer", | ||
| 176 | .item_name = av_default_item_name, | ||
| 177 | .option = sln_options, | ||
| 178 | .version = LIBAVUTIL_VERSION_INT, | ||
| 179 | }; | ||
| 180 | |||
| 181 | const FFInputFormat ff_sln_demuxer = { | ||
| 182 | .p.name = "sln", | ||
| 183 | .p.long_name = NULL_IF_CONFIG_SMALL("Asterisk raw pcm"), | ||
| 184 | .p.flags = AVFMT_GENERIC_INDEX, | ||
| 185 | .p.extensions = "sln", | ||
| 186 | .p.priv_class = &sln_demuxer_class, | ||
| 187 | .priv_data_size = sizeof(PCMAudioDemuxerContext), | ||
| 188 | .read_header = pcm_read_header, | ||
| 189 | .read_packet = ff_pcm_read_packet, | ||
| 190 | .read_seek = ff_pcm_read_seek, | ||
| 191 | .raw_codec_id = AV_CODEC_ID_PCM_S16LE, | ||
| 192 | }; | ||
| 193 | #endif | ||
| 194 |