static int gxf_write_umf_material_description(AVFormatContext *s)
{
GXFContext *gxf = s->priv_data;
AVIOContext *pb = s->pb;
int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
int64_t timestamp = 0;
AVDictionaryEntry *t;
uint64_t nb_fields;
uint32_t timecode_in; // timecode at mark in
uint32_t timecode_out; // timecode at mark out
#if FF_API_TIMESTAMP
if (s->timestamp)
timestamp = s->timestamp;
else
#endif
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
timestamp = ff_iso8601_to_unix_time(t->value);
timecode_in = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
gxf->tc.hh, gxf->tc.mm,
gxf->tc.ss, gxf->tc.ff);
nb_fields = gxf->nb_fields +
gxf->tc.hh * (timecode_base * 3600) +
gxf->tc.mm * (timecode_base * 60) +
gxf->tc.ss * timecode_base +
gxf->tc.ff;
timecode_out = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
nb_fields / (timecode_base * 3600) % 24,
nb_fields / (timecode_base * 60) % 60,
nb_fields / timecode_base % 60,
nb_fields % timecode_base);
avio_wl32(pb, gxf->flags);
avio_wl32(pb, gxf->nb_fields); /* length of the longest track */
avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */
avio_wl32(pb, 0); /* mark in */
avio_wl32(pb, gxf->nb_fields); /* mark out */
avio_wl32(pb, timecode_in); /* timecode mark in */
avio_wl32(pb, timecode_out); /* timecode mark out */
avio_wl64(pb, timestamp); /* modification time */
avio_wl64(pb, timestamp); /* creation time */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, gxf->audio_tracks);
avio_wl16(pb, 1); /* timecode track count */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, gxf->mpeg_tracks);
return 48;
}
static int gxf_write_umf_material_description(AVFormatContext *s)
{
GXFContext *gxf = s->priv_data;
AVIOContext *pb = s->pb;
int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
int64_t timestamp = 0;
AVDictionaryEntry *t;
uint32_t timecode;
#if FF_API_TIMESTAMP
if (s->timestamp)
timestamp = s->timestamp;
else
#endif
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
timestamp = ff_iso8601_to_unix_time(t->value);
// XXX drop frame
timecode =
gxf->nb_fields / (timecode_base * 3600) % 24 << 24 | // hours
gxf->nb_fields / (timecode_base * 60) % 60 << 16 | // minutes
gxf->nb_fields / timecode_base % 60 << 8 | // seconds
gxf->nb_fields % timecode_base; // fields
avio_wl32(pb, gxf->flags);
avio_wl32(pb, gxf->nb_fields); /* length of the longest track */
avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */
avio_wl32(pb, 0); /* mark in */
avio_wl32(pb, gxf->nb_fields); /* mark out */
avio_wl32(pb, 0); /* timecode mark in */
avio_wl32(pb, timecode); /* timecode mark out */
avio_wl64(pb, timestamp); /* modification time */
avio_wl64(pb, timestamp); /* creation time */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, gxf->audio_tracks);
avio_wl16(pb, 1); /* timecode track count */
avio_wl16(pb, 0); /* reserved */
avio_wl16(pb, gxf->mpeg_tracks);
return 48;
}
static DVMuxContext* dv_init_mux(AVFormatContext* s)
{
DVMuxContext *c = s->priv_data;
AVDictionaryEntry *t;
int i;
/* we support at most 1 video and 2 audio streams */
if (s->nb_streams > 5)
return NULL;
c->n_ast = 0;
c->ast[0] = c->ast[1] = c->ast[2] = c->ast[3] = NULL;
/* We have to sort out where audio and where video stream is */
for (i=0; i<s->nb_streams; i++) {
switch (s->streams[i]->codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (c->vst) return NULL;
c->vst = s->streams[i];
break;
case AVMEDIA_TYPE_AUDIO:
if (c->n_ast > 1) return NULL;
c->ast[c->n_ast++] = s->streams[i];
break;
default:
goto bail_out;
}
}
/* Some checks -- DV format is very picky about its incoming streams */
if (!c->vst || c->vst->codec->codec_id != CODEC_ID_DVVIDEO)
goto bail_out;
for (i=0; i<c->n_ast; i++) {
if (c->ast[i] && (c->ast[i]->codec->codec_id != CODEC_ID_PCM_S16BE ||
c->ast[i]->codec->sample_rate != 48000 ||
c->ast[i]->codec->channels != 2))
goto bail_out;
}
c->sys = ff_dv_codec_profile(c->vst->codec);
if (!c->sys)
goto bail_out;
if (((c->n_ast > 1) && (c->sys->n_difchan < 2)) ||
((c->n_ast > 2) && (c->sys->n_difchan < 4))) {
/* only 1 stereo pair is allowed in 25Mbps mode */
/* only 2 stereo pairs allowed in 50Mbps mode */
goto bail_out;
}
/* Ok, everything seems to be in working order */
c->frames = 0;
c->has_audio = 0;
c->has_video = 0;
#if FF_API_TIMESTAMP
if (s->timestamp)
c->start_time = s->timestamp;
else
#endif
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
c->start_time = ff_iso8601_to_unix_time(t->value);
for (i=0; i < c->n_ast; i++) {
if (c->ast[i] && !(c->audio_data[i]=av_fifo_alloc(100*AVCODEC_MAX_AUDIO_FRAME_SIZE))) {
while (i > 0) {
i--;
av_fifo_free(c->audio_data[i]);
}
goto bail_out;
}
}
return c;
bail_out:
return NULL;
}