/*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; }