/*emulate a default IOD for all other files (3GP, weird MP4, QT )*/
GF_Descriptor *isor_emulate_iod(ISOMReader *read)
{
/*generate an IOD with our private dynamic OD stream*/
GF_InitialObjectDescriptor *fake_iod = (GF_InitialObjectDescriptor *) gf_odf_desc_new(GF_ODF_IOD_TAG);
isor_emulate_chapters(read->mov, fake_iod);
read->no_service_desc = GF_TRUE;
return (GF_Descriptor *)fake_iod;
}
/*fixme, this doesn't work properly with respect to @expect_type*/
static GF_Descriptor *ISOR_GetServiceDesc(GF_InputService *plug, u32 expect_type, const char *sub_url)
{
u32 count, nb_st, i, trackID;
GF_ESD *esd;
ISOMReader *read;
GF_InitialObjectDescriptor *iod;
if (!plug || !plug->priv) return NULL;
read = (ISOMReader *) plug->priv;
if (!read->mov) return NULL;
/*no matter what always read text as TTUs*/
gf_isom_text_set_streaming_mode(read->mov, 1);
trackID = 0;
if (!sub_url) {
trackID = read->base_track_id;
read->base_track_id = 0;
} else {
char *ext = strrchr(sub_url, '#');
if (!ext) {
trackID = 0;
} else {
if (!strnicmp(ext, "#trackID=", 9)) trackID = atoi(ext+9);
else if (!stricmp(ext, "#video")) trackID = get_track_id(read->mov, GF_ISOM_MEDIA_VISUAL, 0);
else if (!strnicmp(ext, "#video", 6)) {
trackID = atoi(ext+6);
trackID = get_track_id(read->mov, GF_ISOM_MEDIA_VISUAL, trackID);
}
else if (!stricmp(ext, "#audio")) trackID = get_track_id(read->mov, GF_ISOM_MEDIA_AUDIO, 0);
else if (!strnicmp(ext, "#audio", 6)) {
trackID = atoi(ext+6);
trackID = get_track_id(read->mov, GF_ISOM_MEDIA_AUDIO, trackID);
}
else trackID = atoi(ext+1);
/*if trackID is 0, assume this is a fragment identifier*/
}
}
if (!trackID && (expect_type!=GF_MEDIA_OBJECT_SCENE) && (expect_type!=GF_MEDIA_OBJECT_UNDEF)) {
for (i=0; i<gf_isom_get_track_count(read->mov); i++) {
u32 type = gf_isom_get_media_type(read->mov, i+1);
if (
((type==GF_ISOM_MEDIA_VISUAL) && (expect_type==GF_MEDIA_OBJECT_VIDEO))
|| ((type==GF_ISOM_MEDIA_AUDIO) && (expect_type==GF_MEDIA_OBJECT_AUDIO)) ) {
trackID = gf_isom_get_track_id(read->mov, i+1);
break;
}
}
}
if (trackID && (expect_type!=GF_MEDIA_OBJECT_SCENE) ) {
u32 track = gf_isom_get_track_by_id(read->mov, trackID);
if (!track) return NULL;
esd = gf_media_map_esd(read->mov, track);
esd->OCRESID = 0;
iod = (GF_InitialObjectDescriptor *) gf_isom_get_root_od(read->mov);
if (!iod) {
iod = (GF_InitialObjectDescriptor *) gf_odf_desc_new(GF_ODF_IOD_TAG);
iod->OD_profileAndLevel = iod->audio_profileAndLevel = iod->graphics_profileAndLevel = iod->scene_profileAndLevel = iod->visual_profileAndLevel = 0xFE;
} else {
while (gf_list_count(iod->ESDescriptors)) {
GF_ESD *old = (GF_ESD *)gf_list_get(iod->ESDescriptors, 0);
gf_odf_desc_del((GF_Descriptor *) old);
gf_list_rem(iod->ESDescriptors, 0);
}
}
gf_list_add(iod->ESDescriptors, esd);
isor_emulate_chapters(read->mov, iod);
return (GF_Descriptor *) iod;
}
iod = NULL;
if (check_mpeg4_systems(plug, read->mov)) {
iod = (GF_InitialObjectDescriptor *) gf_isom_get_root_od(read->mov);
if (!iod) {
#ifndef GPAC_DISABLE_LOG
GF_Err e = gf_isom_last_error(read->mov);
if (e) {
GF_LOG(GF_LOG_ERROR, GF_LOG_NETWORK, ("[IsoMedia] Cannot fetch MPEG-4 IOD (error %s) - generating one\n", gf_error_to_string(e) ));
} else {
GF_LOG(GF_LOG_DEBUG, GF_LOG_NETWORK, ("[IsoMedia] No MPEG-4 IOD found in file - generating one\n"));
}
#endif
}
}
if (!iod) return isor_emulate_iod(read);
count = gf_list_count(iod->ESDescriptors);
if (!count) {
gf_odf_desc_del((GF_Descriptor*) iod);
return isor_emulate_iod(read);
}
if (count==1) {
esd = (GF_ESD *)gf_list_get(iod->ESDescriptors, 0);
switch (esd->decoderConfig->streamType) {
case GF_STREAM_SCENE:
case GF_STREAM_PRIVATE_SCENE:
break;
case GF_STREAM_VISUAL:
if (expect_type!=GF_MEDIA_OBJECT_VIDEO) {
gf_odf_desc_del((GF_Descriptor*) iod);
return isor_emulate_iod(read);
}
break;
case GF_STREAM_AUDIO:
/*we need a fake scene graph*/
if (expect_type!=GF_MEDIA_OBJECT_AUDIO) {
gf_odf_desc_del((GF_Descriptor*) iod);
return isor_emulate_iod(read);
}
break;
default:
gf_odf_desc_del((GF_Descriptor*) iod);
return NULL;
}
}
/*check IOD is not badly formed (eg mixing audio, video or text streams)*/
nb_st = 0;
for (i=0; i<count; i++) {
esd = (GF_ESD *)gf_list_get(iod->ESDescriptors, i);
switch (esd->decoderConfig->streamType) {
case GF_STREAM_VISUAL:
nb_st |= 1;
break;
case GF_STREAM_AUDIO:
nb_st |= 2;
break;
case GF_STREAM_TEXT:
nb_st |= 4;
break;
}
}
if ( (nb_st & 1) + (nb_st & 2) + (nb_st & 4) > 1) {
gf_odf_desc_del((GF_Descriptor*) iod);
return isor_emulate_iod(read);
}
isor_emulate_chapters(read->mov, iod);
return (GF_Descriptor *) iod;
}
