0,0 → 1,383 |
/* |
* WAV muxer |
* Copyright (c) 2001, 2002 Fabrice Bellard |
* |
* Sony Wave64 muxer |
* Copyright (c) 2012 Paul B Mahol |
* |
* WAV muxer RF64 support |
* Copyright (c) 2013 Daniel Verkamp <daniel@drv.nu> |
* |
* 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 |
*/ |
|
#include <stdint.h> |
#include <string.h> |
|
#include "libavutil/dict.h" |
#include "libavutil/common.h" |
#include "libavutil/mathematics.h" |
#include "libavutil/opt.h" |
|
#include "avformat.h" |
#include "avio.h" |
#include "avio_internal.h" |
#include "internal.h" |
#include "riff.h" |
|
#define RF64_AUTO (-1) |
#define RF64_NEVER 0 |
#define RF64_ALWAYS 1 |
|
typedef struct WAVMuxContext { |
const AVClass *class; |
int64_t data; |
int64_t fact_pos; |
int64_t ds64; |
int64_t minpts; |
int64_t maxpts; |
int last_duration; |
int write_bext; |
int rf64; |
} WAVMuxContext; |
|
#if CONFIG_WAV_MUXER |
static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen) |
{ |
AVDictionaryEntry *tag; |
int len = 0; |
|
if (tag = av_dict_get(s->metadata, key, NULL, 0)) { |
len = strlen(tag->value); |
len = FFMIN(len, maxlen); |
avio_write(s->pb, tag->value, len); |
} |
|
ffio_fill(s->pb, 0, maxlen - len); |
} |
|
static void bwf_write_bext_chunk(AVFormatContext *s) |
{ |
AVDictionaryEntry *tmp_tag; |
uint64_t time_reference = 0; |
int64_t bext = ff_start_tag(s->pb, "bext"); |
|
bwf_write_bext_string(s, "description", 256); |
bwf_write_bext_string(s, "originator", 32); |
bwf_write_bext_string(s, "originator_reference", 32); |
bwf_write_bext_string(s, "origination_date", 10); |
bwf_write_bext_string(s, "origination_time", 8); |
|
if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0)) |
time_reference = strtoll(tmp_tag->value, NULL, 10); |
avio_wl64(s->pb, time_reference); |
avio_wl16(s->pb, 1); // set version to 1 |
|
if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) { |
unsigned char umidpart_str[17] = {0}; |
int i; |
uint64_t umidpart; |
int len = strlen(tmp_tag->value+2); |
|
for (i = 0; i < len/16; i++) { |
memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16); |
umidpart = strtoll(umidpart_str, NULL, 16); |
avio_wb64(s->pb, umidpart); |
} |
ffio_fill(s->pb, 0, 64 - i*8); |
} else |
ffio_fill(s->pb, 0, 64); // zero UMID |
|
ffio_fill(s->pb, 0, 190); // Reserved |
|
if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0)) |
avio_put_str(s->pb, tmp_tag->value); |
|
ff_end_tag(s->pb, bext); |
} |
|
static int wav_write_header(AVFormatContext *s) |
{ |
WAVMuxContext *wav = s->priv_data; |
AVIOContext *pb = s->pb; |
int64_t fmt; |
|
if (wav->rf64 == RF64_ALWAYS) { |
ffio_wfourcc(pb, "RF64"); |
avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */ |
} else { |
ffio_wfourcc(pb, "RIFF"); |
avio_wl32(pb, 0); /* file length */ |
} |
|
ffio_wfourcc(pb, "WAVE"); |
|
if (wav->rf64 != RF64_NEVER) { |
/* write empty ds64 chunk or JUNK chunk to reserve space for ds64 */ |
ffio_wfourcc(pb, wav->rf64 == RF64_ALWAYS ? "ds64" : "JUNK"); |
avio_wl32(pb, 28); /* chunk size */ |
wav->ds64 = avio_tell(pb); |
ffio_fill(pb, 0, 28); |
} |
|
/* format header */ |
fmt = ff_start_tag(pb, "fmt "); |
if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) { |
av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n", |
s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); |
return -1; |
} |
ff_end_tag(pb, fmt); |
|
if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ |
&& s->pb->seekable) { |
wav->fact_pos = ff_start_tag(pb, "fact"); |
avio_wl32(pb, 0); |
ff_end_tag(pb, wav->fact_pos); |
} |
|
if (wav->write_bext) |
bwf_write_bext_chunk(s); |
|
avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate); |
wav->maxpts = wav->last_duration = 0; |
wav->minpts = INT64_MAX; |
|
/* info header */ |
ff_riff_write_info(s); |
|
/* data header */ |
wav->data = ff_start_tag(pb, "data"); |
|
avio_flush(pb); |
|
return 0; |
} |
|
static int wav_write_packet(AVFormatContext *s, AVPacket *pkt) |
{ |
AVIOContext *pb = s->pb; |
WAVMuxContext *wav = s->priv_data; |
avio_write(pb, pkt->data, pkt->size); |
if(pkt->pts != AV_NOPTS_VALUE) { |
wav->minpts = FFMIN(wav->minpts, pkt->pts); |
wav->maxpts = FFMAX(wav->maxpts, pkt->pts); |
wav->last_duration = pkt->duration; |
} else |
av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n"); |
return 0; |
} |
|
static int wav_write_trailer(AVFormatContext *s) |
{ |
AVIOContext *pb = s->pb; |
WAVMuxContext *wav = s->priv_data; |
int64_t file_size, data_size; |
int64_t number_of_samples = 0; |
int rf64 = 0; |
|
avio_flush(pb); |
|
if (s->pb->seekable) { |
/* update file size */ |
file_size = avio_tell(pb); |
data_size = file_size - wav->data; |
if (wav->rf64 == RF64_ALWAYS || (wav->rf64 == RF64_AUTO && file_size - 8 > UINT32_MAX)) { |
rf64 = 1; |
} else { |
avio_seek(pb, 4, SEEK_SET); |
avio_wl32(pb, (uint32_t)(file_size - 8)); |
avio_seek(pb, file_size, SEEK_SET); |
|
ff_end_tag(pb, wav->data); |
avio_flush(pb); |
} |
|
number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, |
s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, |
s->streams[0]->time_base.den); |
|
if(s->streams[0]->codec->codec_tag != 0x01) { |
/* Update num_samps in fact chunk */ |
avio_seek(pb, wav->fact_pos, SEEK_SET); |
if (rf64 || (wav->rf64 == RF64_AUTO && number_of_samples > UINT32_MAX)) { |
rf64 = 1; |
avio_wl32(pb, -1); |
} else { |
avio_wl32(pb, number_of_samples); |
avio_seek(pb, file_size, SEEK_SET); |
avio_flush(pb); |
} |
} |
|
if (rf64) { |
/* overwrite RIFF with RF64 */ |
avio_seek(pb, 0, SEEK_SET); |
ffio_wfourcc(pb, "RF64"); |
avio_wl32(pb, -1); |
|
/* write ds64 chunk (overwrite JUNK if rf64 == RF64_AUTO) */ |
avio_seek(pb, wav->ds64 - 8, SEEK_SET); |
ffio_wfourcc(pb, "ds64"); |
avio_wl32(pb, 28); /* ds64 chunk size */ |
avio_wl64(pb, file_size - 8); /* RF64 chunk size */ |
avio_wl64(pb, data_size); /* data chunk size */ |
avio_wl64(pb, number_of_samples); /* fact chunk number of samples */ |
avio_wl32(pb, 0); /* number of table entries for non-'data' chunks */ |
|
/* write -1 in data chunk size */ |
avio_seek(pb, wav->data - 4, SEEK_SET); |
avio_wl32(pb, -1); |
|
avio_seek(pb, file_size, SEEK_SET); |
avio_flush(pb); |
} |
} |
return 0; |
} |
|
#define OFFSET(x) offsetof(WAVMuxContext, x) |
#define ENC AV_OPT_FLAG_ENCODING_PARAM |
static const AVOption options[] = { |
{ "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, |
{ "rf64", "Use RF64 header rather than RIFF for large files.", OFFSET(rf64), AV_OPT_TYPE_INT, { .i64 = RF64_NEVER },-1, 1, ENC, "rf64" }, |
{ "auto", "Write RF64 header if file grows large enough.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_AUTO }, 0, 0, ENC, "rf64" }, |
{ "always", "Always write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_ALWAYS }, 0, 0, ENC, "rf64" }, |
{ "never", "Never write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_NEVER }, 0, 0, ENC, "rf64" }, |
{ NULL }, |
}; |
|
static const AVClass wav_muxer_class = { |
.class_name = "WAV muxer", |
.item_name = av_default_item_name, |
.option = options, |
.version = LIBAVUTIL_VERSION_INT, |
}; |
|
AVOutputFormat ff_wav_muxer = { |
.name = "wav", |
.long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"), |
.mime_type = "audio/x-wav", |
.extensions = "wav", |
.priv_data_size = sizeof(WAVMuxContext), |
.audio_codec = AV_CODEC_ID_PCM_S16LE, |
.video_codec = AV_CODEC_ID_NONE, |
.write_header = wav_write_header, |
.write_packet = wav_write_packet, |
.write_trailer = wav_write_trailer, |
.flags = AVFMT_TS_NONSTRICT, |
.codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, |
.priv_class = &wav_muxer_class, |
}; |
#endif /* CONFIG_WAV_MUXER */ |
|
#if CONFIG_W64_MUXER |
#include "w64.h" |
|
static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos) |
{ |
*pos = avio_tell(pb); |
|
avio_write(pb, guid, 16); |
avio_wl64(pb, INT64_MAX); |
} |
|
static void end_guid(AVIOContext *pb, int64_t start) |
{ |
int64_t end, pos = avio_tell(pb); |
|
end = FFALIGN(pos, 8); |
ffio_fill(pb, 0, end - pos); |
avio_seek(pb, start + 16, SEEK_SET); |
avio_wl64(pb, end - start); |
avio_seek(pb, end, SEEK_SET); |
} |
|
static int w64_write_header(AVFormatContext *s) |
{ |
WAVMuxContext *wav = s->priv_data; |
AVIOContext *pb = s->pb; |
int64_t start; |
int ret; |
|
avio_write(pb, ff_w64_guid_riff, sizeof(ff_w64_guid_riff)); |
avio_wl64(pb, -1); |
avio_write(pb, ff_w64_guid_wave, sizeof(ff_w64_guid_wave)); |
start_guid(pb, ff_w64_guid_fmt, &start); |
if ((ret = ff_put_wav_header(pb, s->streams[0]->codec)) < 0) { |
av_log(s, AV_LOG_ERROR, "%s codec not supported\n", |
s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); |
return ret; |
} |
end_guid(pb, start); |
|
if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ |
&& s->pb->seekable) { |
start_guid(pb, ff_w64_guid_fact, &wav->fact_pos); |
avio_wl64(pb, 0); |
end_guid(pb, wav->fact_pos); |
} |
|
start_guid(pb, ff_w64_guid_data, &wav->data); |
|
return 0; |
} |
|
static int w64_write_trailer(AVFormatContext *s) |
{ |
AVIOContext *pb = s->pb; |
WAVMuxContext *wav = s->priv_data; |
int64_t file_size; |
|
if (pb->seekable) { |
end_guid(pb, wav->data); |
|
file_size = avio_tell(pb); |
avio_seek(pb, 16, SEEK_SET); |
avio_wl64(pb, file_size); |
|
if (s->streams[0]->codec->codec_tag != 0x01) { |
int64_t number_of_samples; |
|
number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, |
s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, |
s->streams[0]->time_base.den); |
avio_seek(pb, wav->fact_pos + 24, SEEK_SET); |
avio_wl64(pb, number_of_samples); |
} |
|
avio_seek(pb, file_size, SEEK_SET); |
avio_flush(pb); |
} |
|
return 0; |
} |
|
AVOutputFormat ff_w64_muxer = { |
.name = "w64", |
.long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), |
.extensions = "w64", |
.priv_data_size = sizeof(WAVMuxContext), |
.audio_codec = AV_CODEC_ID_PCM_S16LE, |
.video_codec = AV_CODEC_ID_NONE, |
.write_header = w64_write_header, |
.write_packet = wav_write_packet, |
.write_trailer = w64_write_trailer, |
.flags = AVFMT_TS_NONSTRICT, |
.codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, |
}; |
#endif /* CONFIG_W64_MUXER */ |