Commit a4ad9438 authored by Benjamin Larsson's avatar Benjamin Larsson Committed by Anton Khirnov
Browse files

wav: add an option for writing BEXT chunk


Signed-off-by: default avatarAnton Khirnov <anton@khirnov.net>
parent c7dd3e7e
......@@ -2,6 +2,10 @@ Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.
version <next>:
- BWF muxer
version 0.7:
- E-AC-3 audio encoder
......
......@@ -66,6 +66,7 @@ library:
@tab Used in Z and Z95 games.
@item Brute Force & Ignorance @tab @tab X
@tab Used in the game Flash Traffic: City of Angels.
@item BWF @tab X @tab
@item Interplay C93 @tab @tab X
@tab Used in the game Cyberia from Interplay.
@item Delphine Software International CIN @tab @tab X
......
......@@ -23,22 +23,82 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/log.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "pcm.h"
#include "riff.h"
#include "avio.h"
#include "avio_internal.h"
typedef struct {
const AVClass *class;
int64_t data;
int64_t data_end;
int64_t minpts;
int64_t maxpts;
int last_duration;
int w64;
int write_bext;
} WAVContext;
#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)
{
WAVContext *wav = s->priv_data;
......@@ -65,6 +125,9 @@ static int wav_write_header(AVFormatContext *s)
ff_end_tag(pb, fact);
}
if (wav->write_bext)
bwf_write_bext_chunk(s);
av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
wav->maxpts = wav->last_duration = 0;
wav->minpts = INT64_MAX;
......@@ -125,6 +188,20 @@ static int wav_write_trailer(AVFormatContext *s)
return 0;
}
#define OFFSET(x) offsetof(WAVContext, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "write_bext", "Write BEXT chunk.", OFFSET(write_bext), FF_OPT_TYPE_INT, { 0 }, 0, 1, ENC },
{ 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 = {
"wav",
NULL_IF_CONFIG_SMALL("WAV format"),
......@@ -137,6 +214,7 @@ AVOutputFormat ff_wav_muxer = {
wav_write_packet,
wav_write_trailer,
.codec_tag= (const AVCodecTag* const []){ff_codec_wav_tags, 0},
.priv_class = &wav_muxer_class,
};
#endif /* CONFIG_WAV_MUXER */
......
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