/* * AU muxer and demuxer * Copyright (c) 2001 Fabrice Bellard * * first version by Francois Revol <revol@free.fr> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * Reference documents: * http://www.opengroup.org/public/pubs/external/auformat.html * http://www.goice.co.jp/member/mo/formats/au.html */ #include "config_components.h" #include "libavutil/bprint.h"#include "libavutil/intreadwrite.h"#include "libavutil/mem.h"#include "avformat.h"#include "demux.h"#include "internal.h"#include "avio_internal.h"#include "mux.h"#include "pcm.h"#include "libavutil/avassert.h" /* if we don't know the size in advance */#define AU_UNKNOWN_SIZE ((uint32_t)(~0)) static const AVCodecTag codec_au_tags[] = { { AV_CODEC_ID_PCM_MULAW, 1 }, { AV_CODEC_ID_PCM_S8, 2 }, { AV_CODEC_ID_PCM_S16BE, 3 }, { AV_CODEC_ID_PCM_S24BE, 4 }, { AV_CODEC_ID_PCM_S32BE, 5 }, { AV_CODEC_ID_PCM_F32BE, 6 }, { AV_CODEC_ID_PCM_F64BE, 7 }, { AV_CODEC_ID_ADPCM_G726LE, 23 }, { AV_CODEC_ID_ADPCM_G722,24 }, { AV_CODEC_ID_ADPCM_G726LE, 25 }, { AV_CODEC_ID_ADPCM_G726LE, 26 }, { AV_CODEC_ID_PCM_ALAW, 27 }, { AV_CODEC_ID_ADPCM_G726LE, MKBETAG('7','2','6','2') }, { AV_CODEC_ID_NONE, 0 },}; static const AVCodecTag *const au_codec_tags[] = { codec_au_tags, NULL }; #if CONFIG_AU_DEMUXER static int au_probe(const AVProbeData *p){ if (p->buf_size < 24 || AV_RL32(p->buf) != MKTAG('.', 's', 'n', 'd') || AV_RN32(p->buf+4) == 0 || AV_RN32(p->buf+8) == 0 || AV_RN32(p->buf+12) == 0 || AV_RN32(p->buf+16) == 0 || AV_RN32(p->buf+20) == 0) return 0; return AVPROBE_SCORE_MAX;} static int au_read_annotation(AVFormatContext *s, int size){ static const char keys[][7] = { "title", "artist", "album", "track", "genre", }; AVIOContext *pb = s->pb; enum { PARSE_KEY, PARSE_VALUE, PARSE_FINISHED } state = PARSE_KEY; char c; AVBPrint bprint; char * key = NULL; char * value = NULL; int ret, i; av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED); while (size-- > 0) { if (avio_feof(pb)) { av_bprint_finalize(&bprint, NULL); av_freep(&key); return AVERROR_EOF; } c = avio_r8(pb); switch(state) { case PARSE_KEY: if (c == '\0') { state = PARSE_FINISHED; } else if (c == '=') { ret = av_bprint_finalize(&bprint, &key); if (ret < 0) return ret; av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED); state = PARSE_VALUE; } else { av_bprint_chars(&bprint, c, 1); } break; case PARSE_VALUE: if (c == '\0' || c == '\n') { if (av_bprint_finalize(&bprint, &value) != 0) { av_log(s, AV_LOG_ERROR, "Memory error while parsing AU metadata.\n"); } else { av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED); for (i = 0; i < FF_ARRAY_ELEMS(keys); i++) { if (av_strcasecmp(keys[i], key) == 0) { av_dict_set(&(s->metadata), keys[i], value, AV_DICT_DONT_STRDUP_VAL); value = NULL; break; } } } av_freep(&key); av_freep(&value); state = (c == '\0') ? PARSE_FINISHED : PARSE_KEY; } else { av_bprint_chars(&bprint, c, 1); } break; case PARSE_FINISHED: break; default: /* should never happen */ av_assert0(0); } } av_bprint_finalize(&bprint, NULL); av_freep(&key); return 0;} #define BLOCK_SIZE 1024 static int au_read_header(AVFormatContext *s){ int size, data_size = 0; unsigned int tag; AVIOContext *pb = s->pb; unsigned int id, channels, rate; int bps, ba = 0; enum AVCodecID codec; AVStream *st; int ret; tag = avio_rl32(pb); if (tag != MKTAG('.', 's', 'n', 'd')) return AVERROR_INVALIDDATA; size = avio_rb32(pb); /* header size */ data_size = avio_rb32(pb); /* data size in bytes */ if (data_size < 0 && data_size != AU_UNKNOWN_SIZE) { av_log(s, AV_LOG_ERROR, "Invalid negative data size '%d' found\n", data_size); return AVERROR_INVALIDDATA; } id = avio_rb32(pb); rate = avio_rb32(pb); channels = avio_rb32(pb); if (size > 24) { /* parse annotation field to get metadata */ ret = au_read_annotation(s, size - 24); if (ret < 0) return ret; } codec = ff_codec_get_id(codec_au_tags, id); if (codec == AV_CODEC_ID_NONE) { avpriv_request_sample(s, "unknown or unsupported codec tag: %u", id); return AVERROR_PATCHWELCOME; } bps = av_get_bits_per_sample(codec); if (codec == AV_CODEC_ID_ADPCM_G726LE) { if (id == MKBETAG('7','2','6','2')) { bps = 2; } else { const uint8_t bpcss[] = {4, 0, 3, 5}; av_assert0(id >= 23 && id < 23 + 4); ba = bpcss[id - 23]; bps = bpcss[id - 23]; } } else if (!bps) { avpriv_request_sample(s, "Unknown bits per sample"); return AVERROR_PATCHWELCOME; } if (channels == 0 || channels >= INT_MAX / (BLOCK_SIZE * bps >> 3)) { av_log(s, AV_LOG_ERROR, "Invalid number of channels %u\n", channels); return AVERROR_INVALIDDATA; } if (rate == 0 || rate > INT_MAX) { av_log(s, AV_LOG_ERROR, "Invalid sample rate: %u\n", rate); return AVERROR_INVALIDDATA; } st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->codec_tag = id; st->codecpar->codec_id = codec; st->codecpar->ch_layout.nb_channels = channels; st->codecpar->sample_rate = rate; st->codecpar->bits_per_coded_sample = bps; st->codecpar->bit_rate = channels * rate * bps; st->codecpar->block_align = ba ? ba : FFMAX(bps * channels / 8, 1); if (data_size != AU_UNKNOWN_SIZE) st->duration = (((int64_t)data_size)<<3) / (channels * (int64_t)bps); st->start_time = 0; avpriv_set_pts_info(st, 64, 1, rate); return 0;} const FFInputFormat ff_au_demuxer = { .p.name = "au", .p.long_name = NULL_IF_CONFIG_SMALL("Sun AU"), .p.codec_tag = au_codec_tags, .read_probe = au_probe, .read_header = au_read_header, .read_packet = ff_pcm_read_packet, .read_seek = ff_pcm_read_seek,}; #endif /* CONFIG_AU_DEMUXER */ #if CONFIG_AU_MUXER typedef struct AUContext { uint32_t header_size;} AUContext; #include "rawenc.h" static int au_get_annotations(AVFormatContext *s, AVBPrint *annotations){ static const char keys[][7] = { "Title", "Artist", "Album", "Track", "Genre", }; int cnt = 0; AVDictionary *m = s->metadata; AVDictionaryEntry *t = NULL; for (int i = 0; i < FF_ARRAY_ELEMS(keys); i++) { t = av_dict_get(m, keys[i], NULL, 0); if (t != NULL) { if (cnt++) av_bprint_chars(annotations, '\n', 1); av_bprintf(annotations, "%s=%s", keys[i], t->value); } } /* The specification requires the annotation field to be zero-terminated * and its length to be a multiple of eight, so pad with 0's */ av_bprint_chars(annotations, '\0', 8); return av_bprint_is_complete(annotations) ? 0 : AVERROR(ENOMEM);} static int au_write_header(AVFormatContext *s){ int ret; AUContext *au = s->priv_data; AVIOContext *pb = s->pb; AVCodecParameters *par = s->streams[0]->codecpar; AVBPrint annotations; par->codec_tag = ff_codec_get_tag(codec_au_tags, par->codec_id); if (!par->codec_tag) { av_log(s, AV_LOG_ERROR, "unsupported codec\n"); return AVERROR(EINVAL); } av_bprint_init(&annotations, 0, INT_MAX - 24); ret = au_get_annotations(s, &annotations); if (ret < 0) goto fail; au->header_size = 24 + annotations.len & ~7; ffio_wfourcc(pb, ".snd"); /* magic number */ avio_wb32(pb, au->header_size); /* header size */ avio_wb32(pb, AU_UNKNOWN_SIZE); /* data size */ avio_wb32(pb, par->codec_tag); /* codec ID */ avio_wb32(pb, par->sample_rate); avio_wb32(pb, par->ch_layout.nb_channels); avio_write(pb, annotations.str, annotations.len & ~7); fail: av_bprint_finalize(&annotations, NULL); return ret;} static int au_write_trailer(AVFormatContext *s){ AVIOContext *pb = s->pb; AUContext *au = s->priv_data; int64_t file_size = avio_tell(pb); if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && file_size < INT32_MAX) { /* update file size */ avio_seek(pb, 8, SEEK_SET); avio_wb32(pb, (uint32_t)(file_size - au->header_size)); avio_seek(pb, file_size, SEEK_SET); } return 0;} const FFOutputFormat ff_au_muxer = { .p.name = "au", .p.long_name = NULL_IF_CONFIG_SMALL("Sun AU"), .p.mime_type = "audio/basic", .p.extensions = "au", .p.codec_tag = au_codec_tags, .p.audio_codec = AV_CODEC_ID_PCM_S16BE, .p.video_codec = AV_CODEC_ID_NONE, .p.subtitle_codec = AV_CODEC_ID_NONE, .p.flags = AVFMT_NOTIMESTAMPS, .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH, .priv_data_size = sizeof(AUContext), .write_header = au_write_header, .write_packet = ff_raw_write_packet, .write_trailer = au_write_trailer,}; #endif /* CONFIG_AU_MUXER */
/*
* AU muxer and demuxer
* Copyright (c) 2001 Fabrice Bellard
*
* first version by Francois Revol <revol@free.fr>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Reference documents:
* http://www.opengroup.org/public/pubs/external/auformat.html
* http://www.goice.co.jp/member/mo/formats/au.html
*/
#include "config_components.h"
#include "libavutil/bprint.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "avformat.h"
#include "demux.h"
#include "internal.h"
#include "avio_internal.h"
#include "mux.h"
#include "pcm.h"
#include "libavutil/avassert.h"
/* if we don't know the size in advance */
#define AU_UNKNOWN_SIZE ((uint32_t)(~0))
static const AVCodecTag codec_au_tags[] = {
{ AV_CODEC_ID_PCM_MULAW, 1 },
{ AV_CODEC_ID_PCM_S8, 2 },
{ AV_CODEC_ID_PCM_S16BE, 3 },
{ AV_CODEC_ID_PCM_S24BE, 4 },
{ AV_CODEC_ID_PCM_S32BE, 5 },
{ AV_CODEC_ID_PCM_F32BE, 6 },
{ AV_CODEC_ID_PCM_F64BE, 7 },
{ AV_CODEC_ID_ADPCM_G726LE, 23 },
{ AV_CODEC_ID_ADPCM_G722,24 },
{ AV_CODEC_ID_ADPCM_G726LE, 25 },
{ AV_CODEC_ID_ADPCM_G726LE, 26 },
{ AV_CODEC_ID_PCM_ALAW, 27 },
{ AV_CODEC_ID_ADPCM_G726LE, MKBETAG('7','2','6','2') },
{ AV_CODEC_ID_NONE, 0 },
};
static const AVCodecTag *const au_codec_tags[] = { codec_au_tags, NULL };
#if CONFIG_AU_DEMUXER
static int au_probe(const AVProbeData *p)
{
if (p->buf_size < 24 ||
AV_RL32(p->buf) != MKTAG('.', 's', 'n', 'd') ||
AV_RN32(p->buf+4) == 0 ||
AV_RN32(p->buf+8) == 0 ||
AV_RN32(p->buf+12) == 0 ||
AV_RN32(p->buf+16) == 0 ||
AV_RN32(p->buf+20) == 0)
return 0;
return AVPROBE_SCORE_MAX;
}
static int au_read_annotation(AVFormatContext *s, int size)
{
static const char keys[][7] = {
"title",
"artist",
"album",
"track",
"genre",
};
AVIOContext *pb = s->pb;
enum { PARSE_KEY, PARSE_VALUE, PARSE_FINISHED } state = PARSE_KEY;
char c;
AVBPrint bprint;
char * key = NULL;
char * value = NULL;
int ret, i;
av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
while (size-- > 0) {
if (avio_feof(pb)) {
av_bprint_finalize(&bprint, NULL);
av_freep(&key);
return AVERROR_EOF;
}
c = avio_r8(pb);
switch(state) {
case PARSE_KEY:
if (c == '\0') {
state = PARSE_FINISHED;
} else if (c == '=') {
ret = av_bprint_finalize(&bprint, &key);
if (ret < 0)
return ret;
av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
state = PARSE_VALUE;
} else {
av_bprint_chars(&bprint, c, 1);
}
break;
case PARSE_VALUE:
if (c == '\0' || c == '\n') {
if (av_bprint_finalize(&bprint, &value) != 0) {
av_log(s, AV_LOG_ERROR, "Memory error while parsing AU metadata.\n");
} else {
av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
for (i = 0; i < FF_ARRAY_ELEMS(keys); i++) {
if (av_strcasecmp(keys[i], key) == 0) {
av_dict_set(&(s->metadata), keys[i], value, AV_DICT_DONT_STRDUP_VAL);
value = NULL;
break;
}
}
}
av_freep(&key);
av_freep(&value);
state = (c == '\0') ? PARSE_FINISHED : PARSE_KEY;
} else {
av_bprint_chars(&bprint, c, 1);
}
break;
case PARSE_FINISHED:
break;
default:
/* should never happen */
av_assert0(0);
}
}
av_bprint_finalize(&bprint, NULL);
av_freep(&key);
return 0;
}
#define BLOCK_SIZE 1024
static int au_read_header(AVFormatContext *s)
{
int size, data_size = 0;
unsigned int tag;
AVIOContext *pb = s->pb;
unsigned int id, channels, rate;
int bps, ba = 0;
enum AVCodecID codec;
AVStream *st;
int ret;
tag = avio_rl32(pb);
if (tag != MKTAG('.', 's', 'n', 'd'))
return AVERROR_INVALIDDATA;
size = avio_rb32(pb); /* header size */
data_size = avio_rb32(pb); /* data size in bytes */
if (data_size < 0 && data_size != AU_UNKNOWN_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid negative data size '%d' found\n", data_size);
return AVERROR_INVALIDDATA;
}
id = avio_rb32(pb);
rate = avio_rb32(pb);
channels = avio_rb32(pb);
if (size > 24) {
/* parse annotation field to get metadata */
ret = au_read_annotation(s, size - 24);
if (ret < 0)
return ret;
}
codec = ff_codec_get_id(codec_au_tags, id);
if (codec == AV_CODEC_ID_NONE) {
avpriv_request_sample(s, "unknown or unsupported codec tag: %u", id);
return AVERROR_PATCHWELCOME;
}
bps = av_get_bits_per_sample(codec);
if (codec == AV_CODEC_ID_ADPCM_G726LE) {
if (id == MKBETAG('7','2','6','2')) {
bps = 2;
} else {
const uint8_t bpcss[] = {4, 0, 3, 5};
av_assert0(id >= 23 && id < 23 + 4);
ba = bpcss[id - 23];
bps = bpcss[id - 23];
}
} else if (!bps) {
avpriv_request_sample(s, "Unknown bits per sample");
return AVERROR_PATCHWELCOME;
}
if (channels == 0 || channels >= INT_MAX / (BLOCK_SIZE * bps >> 3)) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels %u\n", channels);
return AVERROR_INVALIDDATA;
}
if (rate == 0 || rate > INT_MAX) {
av_log(s, AV_LOG_ERROR, "Invalid sample rate: %u\n", rate);
return AVERROR_INVALIDDATA;
}
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_tag = id;
st->codecpar->codec_id = codec;
st->codecpar->ch_layout.nb_channels = channels;
st->codecpar->sample_rate = rate;
st->codecpar->bits_per_coded_sample = bps;
st->codecpar->bit_rate = channels * rate * bps;
st->codecpar->block_align = ba ? ba : FFMAX(bps * channels / 8, 1);
if (data_size != AU_UNKNOWN_SIZE)
st->duration = (((int64_t)data_size)<<3) / (channels * (int64_t)bps);
st->start_time = 0;
avpriv_set_pts_info(st, 64, 1, rate);
return 0;
}
const FFInputFormat ff_au_demuxer = {
.p.name = "au",
.p.long_name = NULL_IF_CONFIG_SMALL("Sun AU"),
.p.codec_tag = au_codec_tags,
.read_probe = au_probe,
.read_header = au_read_header,
.read_packet = ff_pcm_read_packet,
.read_seek = ff_pcm_read_seek,
};
#endif /* CONFIG_AU_DEMUXER */
#if CONFIG_AU_MUXER
typedef struct AUContext {
uint32_t header_size;
} AUContext;
#include "rawenc.h"
static int au_get_annotations(AVFormatContext *s, AVBPrint *annotations)
{
static const char keys[][7] = {
"Title",
"Artist",
"Album",
"Track",
"Genre",
};
int cnt = 0;
AVDictionary *m = s->metadata;
AVDictionaryEntry *t = NULL;
for (int i = 0; i < FF_ARRAY_ELEMS(keys); i++) {
t = av_dict_get(m, keys[i], NULL, 0);
if (t != NULL) {
if (cnt++)
av_bprint_chars(annotations, '\n', 1);
av_bprintf(annotations, "%s=%s", keys[i], t->value);
}
}
/* The specification requires the annotation field to be zero-terminated
* and its length to be a multiple of eight, so pad with 0's */
av_bprint_chars(annotations, '\0', 8);
return av_bprint_is_complete(annotations) ? 0 : AVERROR(ENOMEM);
}
static int au_write_header(AVFormatContext *s)
{
int ret;
AUContext *au = s->priv_data;
AVIOContext *pb = s->pb;
AVCodecParameters *par = s->streams[0]->codecpar;
AVBPrint annotations;
par->codec_tag = ff_codec_get_tag(codec_au_tags, par->codec_id);
if (!par->codec_tag) {
av_log(s, AV_LOG_ERROR, "unsupported codec\n");
return AVERROR(EINVAL);
}
av_bprint_init(&annotations, 0, INT_MAX - 24);
ret = au_get_annotations(s, &annotations);
if (ret < 0)
goto fail;
au->header_size = 24 + annotations.len & ~7;
ffio_wfourcc(pb, ".snd"); /* magic number */
avio_wb32(pb, au->header_size); /* header size */
avio_wb32(pb, AU_UNKNOWN_SIZE); /* data size */
avio_wb32(pb, par->codec_tag); /* codec ID */
avio_wb32(pb, par->sample_rate);
avio_wb32(pb, par->ch_layout.nb_channels);
avio_write(pb, annotations.str, annotations.len & ~7);
fail:
av_bprint_finalize(&annotations, NULL);
return ret;
}
static int au_write_trailer(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
AUContext *au = s->priv_data;
int64_t file_size = avio_tell(pb);
if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && file_size < INT32_MAX) {
/* update file size */
avio_seek(pb, 8, SEEK_SET);
avio_wb32(pb, (uint32_t)(file_size - au->header_size));
avio_seek(pb, file_size, SEEK_SET);
}
return 0;
}
const FFOutputFormat ff_au_muxer = {
.p.name = "au",
.p.long_name = NULL_IF_CONFIG_SMALL("Sun AU"),
.p.mime_type = "audio/basic",
.p.extensions = "au",
.p.codec_tag = au_codec_tags,
.p.audio_codec = AV_CODEC_ID_PCM_S16BE,
.p.video_codec = AV_CODEC_ID_NONE,
.p.subtitle_codec = AV_CODEC_ID_NONE,
.p.flags = AVFMT_NOTIMESTAMPS,
.flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
.priv_data_size = sizeof(AUContext),
.write_header = au_write_header,
.write_packet = ff_raw_write_packet,
.write_trailer = au_write_trailer,
};
#endif /* CONFIG_AU_MUXER */