static int gxf_write_header(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
GXFContext *gxf = s->priv_data;
int i;
gxf->fc = s;
gxf->flags |= 0x00080000; /* material is simple clip */
for (i = 0; i < s->nb_streams; ++i) {
AVStream *st = s->streams[i];
GXFStreamContext *sc = av_mallocz(sizeof(*sc));
if (!sc)
return AVERROR(ENOMEM);
st->priv_data = sc;
sc->codec = st->codec;
sc->index = i;
sc->media_type = codec_get_tag(gxf_media_types, sc->codec->codec_id);
if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if (st->codec->codec_id != CODEC_ID_PCM_S16LE) {
av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n");
return -1;
}
if (st->codec->sample_rate != 48000) {
av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n");
return -1;
}
if (st->codec->channels != 1) {
av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n");
return -1;
}
sc->track_type = 2;
sc->sample_rate = st->codec->sample_rate;
av_set_pts_info(st, 64, 1, sc->sample_rate);
sc->sample_size = 16;
sc->frame_rate_index = -2;
sc->lines_index = -2;
sc->fields = -2;
gxf->audio_tracks++;
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
} else if (sc->codec->codec_type == CODEC_TYPE_VIDEO) {
/* FIXME check from time_base ? */
if (sc->codec->height == 480 || sc->codec->height == 512) { /* NTSC or NTSC+VBI */
sc->frame_rate_index = 5;
sc->sample_rate = 60;
gxf->flags |= 0x00000080;
} else { /* assume PAL */
sc->frame_rate_index = 6;
sc->media_type++;
sc->sample_rate = 50;
gxf->flags |= 0x00000040;
}
gxf->sample_rate = sc->sample_rate;
av_set_pts_info(st, 64, 1, st->codec->time_base.den);
sc->dts_delay = GXF_NODELAY;
if (gxf_find_lines_index(sc) < 0)
sc->lines_index = -1;
sc->sample_size = st->codec->bit_rate;
sc->fields = 2; /* interlaced */
switch (sc->codec->codec_id) {
case CODEC_ID_MPEG2VIDEO:
sc->first_gop_closed = -1;
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000;
break;
case CODEC_ID_DVVIDEO:
if (sc->codec->pix_fmt == PIX_FMT_YUV422P) {
sc->media_type += 2;
sc->track_type = 6;
gxf->flags |= 0x00002000;
} else {
sc->track_type = 5;
gxf->flags |= 0x00001000;
}
break;
default:
av_log(s, AV_LOG_ERROR, "video codec not supported\n");
return -1;
}
}
}
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
return -1;
gxf_write_map_packet(pb, gxf);
//gxf_write_flt_packet(pb, gxf);
gxf_write_umf_packet(pb, gxf);
put_flush_packet(pb);
return 0;
}
static int gxf_write_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
GXFContext *gxf = s->priv_data;
GXFStreamContext *vsc = NULL;
uint8_t tracks[255] = {0};
int i, media_info = 0;
if (url_is_streamed(pb)) {
av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome");
return -1;
}
gxf->flags |= 0x00080000; /* material is simple clip */
for (i = 0; i < s->nb_streams; ++i) {
AVStream *st = s->streams[i];
GXFStreamContext *sc = av_mallocz(sizeof(*sc));
if (!sc)
return AVERROR(ENOMEM);
st->priv_data = sc;
sc->media_type = ff_codec_get_tag(gxf_media_types, st->codec->codec_id);
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
if (st->codec->codec_id != CODEC_ID_PCM_S16LE) {
av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n");
return -1;
}
if (st->codec->sample_rate != 48000) {
av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n");
return -1;
}
if (st->codec->channels != 1) {
av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n");
return -1;
}
sc->track_type = 2;
sc->sample_rate = st->codec->sample_rate;
av_set_pts_info(st, 64, 1, sc->sample_rate);
sc->sample_size = 16;
sc->frame_rate_index = -2;
sc->lines_index = -2;
sc->fields = -2;
gxf->audio_tracks++;
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
media_info = 'A';
} else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (i != 0) {
av_log(s, AV_LOG_ERROR, "video stream must be the first track\n");
return -1;
}
/* FIXME check from time_base ? */
if (st->codec->height == 480 || st->codec->height == 512) { /* NTSC or NTSC+VBI */
sc->frame_rate_index = 5;
sc->sample_rate = 60;
gxf->flags |= 0x00000080;
gxf->time_base = (AVRational){ 1001, 60000 };
} else if (st->codec->height == 576 || st->codec->height == 608) { /* PAL or PAL+VBI */
sc->frame_rate_index = 6;
sc->media_type++;
sc->sample_rate = 50;
gxf->flags |= 0x00000040;
gxf->time_base = (AVRational){ 1, 50 };
} else {
av_log(s, AV_LOG_ERROR, "unsupported video resolution, "
"gxf muxer only accepts PAL or NTSC resolutions currently\n");
return -1;
}
av_set_pts_info(st, 64, gxf->time_base.num, gxf->time_base.den);
if (gxf_find_lines_index(st) < 0)
sc->lines_index = -1;
sc->sample_size = st->codec->bit_rate;
sc->fields = 2; /* interlaced */
vsc = sc;
switch (st->codec->codec_id) {
case CODEC_ID_MJPEG:
sc->track_type = 1;
gxf->flags |= 0x00004000;
media_info = 'J';
break;
case CODEC_ID_MPEG1VIDEO:
sc->track_type = 9;
gxf->mpeg_tracks++;
media_info = 'L';
break;
case CODEC_ID_MPEG2VIDEO:
sc->first_gop_closed = -1;
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000;
media_info = 'M';
break;
case CODEC_ID_DVVIDEO:
if (st->codec->pix_fmt == PIX_FMT_YUV422P) {
sc->media_type += 2;
sc->track_type = 6;
gxf->flags |= 0x00002000;
media_info = 'E';
} else {
sc->track_type = 5;
gxf->flags |= 0x00001000;
media_info = 'D';
}
break;
default:
av_log(s, AV_LOG_ERROR, "video codec not supported\n");
return -1;
}
}
/* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
sc->media_info = media_info<<8 | ('0'+tracks[media_info]++);
sc->order = s->nb_streams - st->index;
}
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
return -1;
gxf_init_timecode_track(&gxf->timecode_track, vsc);
gxf->flags |= 0x200000; // time code track is non-drop frame
gxf_write_map_packet(s, 0);
gxf_write_flt_packet(s);
gxf_write_umf_packet(s);
gxf->packet_count = 3;
put_flush_packet(pb);
return 0;
}
