//extraction of the ESD from the track
GF_Err GetESD(GF_MovieBox *moov, u32 trackID, u32 StreamDescIndex, GF_ESD **outESD)
{
GF_Err e;
GF_ESD *esd;
u32 track_num = 0;
GF_SampleTableBox *stbl;
GF_TrackBox *trak, *OCRTrack;
GF_TrackReferenceTypeBox *dpnd;
GF_SLConfig *slc;
GF_MPEGSampleEntryBox *entry;
track_num = gf_isom_get_tracknum_from_id(moov, trackID);
dpnd = NULL;
*outESD = NULL;
trak = gf_isom_get_track(moov, track_num);
if (!trak) return GF_ISOM_INVALID_FILE;
e = Media_GetESD(trak->Media, StreamDescIndex, &esd, 0);
if (e) return e;
e = Media_GetSampleDesc(trak->Media, StreamDescIndex, (GF_SampleEntryBox **) &entry, NULL);
if (e) return e;
//set the ID
esd->ESID = trackID;
//find stream dependencies
e = Track_FindRef(trak, GF_ISOM_BOX_TYPE_DPND , &dpnd);
if (e) return e;
if (dpnd) {
//ONLY ONE STREAM DEPENDENCY IS ALLOWED
if (dpnd->trackIDCount != 1) return GF_ISOM_INVALID_MEDIA;
//fix the spec: where is the index located ??
esd->dependsOnESID = dpnd->trackIDs[0];
} else {
esd->dependsOnESID = 0;
}
if (trak->udta) {
GF_UserDataMap *map;
u32 i = 0;
while ((map = (GF_UserDataMap*)gf_list_enum(trak->udta->recordList, &i))) {
if (map->boxType == GF_4CC('A','U','X','V')) {
GF_Descriptor *d = gf_odf_desc_new(GF_ODF_AUX_VIDEO_DATA);
gf_list_add(esd->extensionDescriptors, d);
break;
}
}
}
//OK, get the OCR (in a REAL MP4File, OCR is 0 in ESD and is specified through track reference
dpnd = NULL;
OCRTrack = NULL;
//find OCR dependencies
e = Track_FindRef(trak, GF_ISOM_BOX_TYPE_SYNC, &dpnd);
if (e) return e;
if (dpnd) {
if (dpnd->trackIDCount != 1) return GF_ISOM_INVALID_MEDIA;
esd->OCRESID = dpnd->trackIDs[0];
OCRTrack = gf_isom_get_track_from_id(trak->moov, dpnd->trackIDs[0]);
while (OCRTrack) {
/*if we have a dependency on a track that doesn't have OCR dep, remove that dependency*/
e = Track_FindRef(OCRTrack, GF_ISOM_BOX_TYPE_SYNC, &dpnd);
if (e || !dpnd || !dpnd->trackIDCount) {
OCRTrack = NULL;
goto default_sync;
}
/*this is explicit desync*/
if (dpnd && ((dpnd->trackIDs[0]==0) || (dpnd->trackIDs[0]==OCRTrack->Header->trackID))) break;
/*loop in OCRs, break it*/
if (esd->ESID == OCRTrack->Header->trackID) {
OCRTrack = NULL;
goto default_sync;
}
/*check next*/
OCRTrack = gf_isom_get_track_from_id(trak->moov, dpnd->trackIDs[0]);
}
if (!OCRTrack) goto default_sync;
} else {
default_sync:
/*all tracks are sync'ed by default*/
if (trak->moov->mov->es_id_default_sync<0) {
if (esd->OCRESID)
trak->moov->mov->es_id_default_sync = esd->OCRESID;
else
trak->moov->mov->es_id_default_sync = esd->ESID;
}
if (trak->moov->mov->es_id_default_sync) esd->OCRESID = (u16) trak->moov->mov->es_id_default_sync;
/*cf ESD writer*/
if (esd->OCRESID == esd->ESID) esd->OCRESID = 0;
}
//update the IPI stuff if needed
if (esd->ipiPtr != NULL) {
dpnd = NULL;
e = Track_FindRef(trak, GF_ISOM_BOX_TYPE_IPIR, &dpnd);
if (e) return e;
if (dpnd) {
if (esd->ipiPtr->tag != GF_ODF_ISOM_IPI_PTR_TAG) return GF_ISOM_INVALID_FILE;
//OK, retrieve the ID: the IPI_ES_Id is currently the ref track
esd->ipiPtr->IPI_ES_Id = dpnd->trackIDs[esd->ipiPtr->IPI_ES_Id - 1];
//and change the tag
esd->ipiPtr->tag = GF_ODF_IPI_PTR_TAG;
} else {
return GF_ISOM_INVALID_FILE;
}
}
if ((trak->Media->mediaHeader->packedLanguage[0] != 'u')
|| (trak->Media->mediaHeader->packedLanguage[1] != 'n')
|| (trak->Media->mediaHeader->packedLanguage[2] != 'd') ) {
if (!esd->langDesc) esd->langDesc = (GF_Language *) gf_odf_desc_new(GF_ODF_LANG_TAG);
esd->langDesc->langCode = trak->Media->mediaHeader->packedLanguage[0];
esd->langDesc->langCode <<= 8;
esd->langDesc->langCode |= trak->Media->mediaHeader->packedLanguage[1];
esd->langDesc->langCode <<= 8;
esd->langDesc->langCode |= trak->Media->mediaHeader->packedLanguage[2];
}
{
u16 rvc_predefined;
char *rvc_cfg_data;
const char *mime_type;
u32 rvc_cfg_size;
e = gf_isom_get_rvc_config(moov->mov, track_num, 1, &rvc_predefined, &rvc_cfg_data, &rvc_cfg_size, &mime_type);
if (e==GF_OK) {
if (rvc_predefined) {
esd->decoderConfig->predefined_rvc_config = rvc_predefined;
} else {
esd->decoderConfig->rvc_config = (GF_DefaultDescriptor *) gf_odf_desc_new(GF_ODF_DSI_TAG);
if (mime_type && !strcmp(mime_type, "application/rvc-config+xml+gz") ) {
#if !defined(GPAC_DISABLE_CORE_TOOLS) && !defined(GPAC_DISABLE_ZLIB)
gf_gz_decompress_payload(rvc_cfg_data, rvc_cfg_size, &esd->decoderConfig->rvc_config->data, &esd->decoderConfig->rvc_config->dataLength);
gf_free(rvc_cfg_data);
#endif
} else {
esd->decoderConfig->rvc_config->data = rvc_cfg_data;
esd->decoderConfig->rvc_config->dataLength = rvc_cfg_size;
}
}
}
}
/*normally all files shall be stored with predefined=SLPredef_MP4, but of course some are broken (philips)
so we just check the ESD_URL. If set, use the given cfg, otherwise always rewrite it*/
if (esd->URLString != NULL) {
*outESD = esd;
return GF_OK;
}
//if we are in publishing mode and we have an SLConfig specified, use it as is
switch (entry->type) {
case GF_ISOM_BOX_TYPE_MP4V:
slc = ((GF_MPEGVisualSampleEntryBox *)entry)->slc;
break;
case GF_ISOM_BOX_TYPE_MP4A:
slc = ((GF_MPEGAudioSampleEntryBox *)entry)->slc;
break;
case GF_ISOM_BOX_TYPE_MP4S:
slc = entry->slc;
break;
default:
slc = NULL;
break;
}
if (slc) {
gf_odf_desc_del((GF_Descriptor *)esd->slConfig);
gf_odf_desc_copy((GF_Descriptor *)slc, (GF_Descriptor **)&esd->slConfig);
*outESD = esd;
return GF_OK;
}
//otherwise use the regular mapping
//this is a desc for a media in the file, let's rewrite some param
esd->slConfig->timestampLength = 32;
esd->slConfig->timestampResolution = trak->Media->mediaHeader->timeScale;
//NO OCR from MP4File streams (eg, constant OC Res one)
esd->slConfig->OCRLength = 0;
esd->slConfig->OCRResolution = 0;
// if (OCRTrack) esd->slConfig->OCRResolution = OCRTrack->Media->mediaHeader->timeScale;
stbl = trak->Media->information->sampleTable;
// a little optimization here: if all our samples are sync,
//set the RAPOnly to true... for external users...
if (! stbl->SyncSample) {
esd->slConfig->hasRandomAccessUnitsOnlyFlag = 1;
esd->slConfig->useRandomAccessPointFlag = 0;
} else {
esd->slConfig->hasRandomAccessUnitsOnlyFlag = 0;
//signal we are NOT using sync points if no info is present in the table
esd->slConfig->useRandomAccessPointFlag = stbl->SyncSample->nb_entries ? 1 : 0;
}
//do we have DegradationPriority ?
if (stbl->DegradationPriority) {
esd->slConfig->degradationPriorityLength = 15;
} else {
esd->slConfig->degradationPriorityLength = 0;
}
//paddingBits
if (stbl->PaddingBits) {
esd->slConfig->usePaddingFlag = 1;
}
//change to support reflecting OD streams
esd->slConfig->useAccessUnitEndFlag = 1;
esd->slConfig->useAccessUnitStartFlag = 1;
//signal we do have padding flag (since we only use logical SL packet
//the user can decide whether to use the info or not
esd->slConfig->usePaddingFlag = stbl->PaddingBits ? 1 : 0;
//same with degradation priority
esd->slConfig->degradationPriorityLength = stbl->DegradationPriority ? 32 : 0;
//this new SL will be OUT OF THE FILE. Let's set its predefined to 0
esd->slConfig->predefined = 0;
*outESD = esd;
return GF_OK;
}
RTPStream *RP_NewStream(RTPClient *rtp, GF_SDPMedia *media, GF_SDPInfo *sdp, RTPStream *input_stream)
{
GF_RTSPRange *range;
RTPStream *tmp;
GF_RTPMap *map;
u32 i, ESID, ODID, ssrc, rtp_seq, rtp_time;
Bool force_bcast = 0;
Double Start, End;
Float CurrentTime;
u16 rvc_predef = 0;
char *rvc_config_att = NULL;
u32 s_port_first, s_port_last;
GF_X_Attribute *att;
Bool is_migration = 0;
char *ctrl;
GF_SDPConnection *conn;
GF_RTSPTransport trans;
u32 mid, prev_stream, base_stream;
//extract all relevant info from the GF_SDPMedia
Start = 0.0;
End = -1.0;
CurrentTime = 0.0f;
ODID = 0;
ESID = 0;
ctrl = NULL;
range = NULL;
s_port_first = s_port_last = 0;
ssrc = rtp_seq = rtp_time = 0;
mid = prev_stream = base_stream = 0;
i=0;
while ((att = (GF_X_Attribute*)gf_list_enum(media->Attributes, &i))) {
if (!stricmp(att->Name, "control")) ctrl = att->Value;
else if (!stricmp(att->Name, "gpac-broadcast")) force_bcast = 1;
else if (!stricmp(att->Name, "mpeg4-esid") && att->Value) ESID = atoi(att->Value);
else if (!stricmp(att->Name, "mpeg4-odid") && att->Value) ODID = atoi(att->Value);
else if (!stricmp(att->Name, "range") && !range) range = gf_rtsp_range_parse(att->Value);
else if (!stricmp(att->Name, "x-stream-state") ) {
sscanf(att->Value, "server-port=%u-%u;ssrc=%X;npt=%g;seq=%u;rtptime=%u",
&s_port_first, &s_port_last, &ssrc, &CurrentTime, &rtp_seq, &rtp_time);
is_migration = 1;
}
else if (!stricmp(att->Name, "x-server-port") ) {
sscanf(att->Value, "%u-%u", &s_port_first, &s_port_last);
} else if (!stricmp(att->Name, "rvc-config-predef")) {
rvc_predef = atoi(att->Value);
} else if (!stricmp(att->Name, "rvc-config")) {
rvc_config_att = att->Value;
} else if (!stricmp(att->Name, "mid")) {
sscanf(att->Value, "L%d", &mid);
} else if (!stricmp(att->Name, "depend")) {
char buf[3000];
memset(buf, 0, 3000);
sscanf(att->Value, "%*d lay L%d %*s %s", &base_stream, buf);
if (!strlen(buf))
sscanf(att->Value, "%*d lay %s", buf);
sscanf(buf, "L%d", &prev_stream);
}
}
if (range) {
Start = range->start;
End = range->end;
gf_rtsp_range_del(range);
}
/*check connection*/
conn = sdp->c_connection;
if (conn && (!conn->host || !strcmp(conn->host, "0.0.0.0"))) conn = NULL;
if (!conn) conn = (GF_SDPConnection*)gf_list_get(media->Connections, 0);
if (conn && (!conn->host || !strcmp(conn->host, "0.0.0.0"))) conn = NULL;
if (!conn) {
/*RTSP RFC recommends an empty "c= " line but some server don't send it. Use session info (o=)*/
if (!sdp->o_net_type || !sdp->o_add_type || strcmp(sdp->o_net_type, "IN")) return NULL;
if (strcmp(sdp->o_add_type, "IP4") && strcmp(sdp->o_add_type, "IP6")) return NULL;
} else {
if (strcmp(conn->net_type, "IN")) return NULL;
if (strcmp(conn->add_type, "IP4") && strcmp(conn->add_type, "IP6")) return NULL;
}
/*do we support transport*/
if (strcmp(media->Profile, "RTP/AVP") && strcmp(media->Profile, "RTP/AVP/TCP")
&& strcmp(media->Profile, "RTP/SAVP") && strcmp(media->Profile, "RTP/SAVP/TCP")
) return NULL;
/*check RTP map. For now we only support 1 RTPMap*/
if (media->fmt_list || (gf_list_count(media->RTPMaps) > 1)) return NULL;
/*check payload type*/
map = (GF_RTPMap*)gf_list_get(media->RTPMaps, 0);
/*this is an ESD-URL setup, we likely have namespace conflicts so overwrite given ES_ID
by the app one (client side), but keep control (server side) if provided*/
if (input_stream) {
ESID = input_stream->ES_ID;
if (!ctrl) ctrl = input_stream->control;
tmp = input_stream;
} else {
tmp = RP_FindChannel(rtp, NULL, ESID, NULL, 0);
if (tmp) return NULL;
GF_SAFEALLOC(tmp, RTPStream);
tmp->owner = rtp;
}
/*create an RTP channel*/
tmp->rtp_ch = gf_rtp_new();
if (ctrl) tmp->control = gf_strdup(ctrl);
tmp->ES_ID = ESID;
tmp->OD_ID = ODID;
tmp->mid = mid;
tmp->prev_stream = prev_stream;
tmp->base_stream = base_stream;
memset(&trans, 0, sizeof(GF_RTSPTransport));
trans.Profile = media->Profile;
trans.source = conn ? conn->host : sdp->o_address;
trans.IsUnicast = gf_sk_is_multicast_address(trans.source) ? 0 : 1;
if (!trans.IsUnicast) {
trans.port_first = media->PortNumber;
trans.port_last = media->PortNumber + 1;
trans.TTL = conn ? conn->TTL : 0;
} else {
trans.client_port_first = media->PortNumber;
trans.client_port_last = media->PortNumber + 1;
trans.port_first = s_port_first ? s_port_first : trans.client_port_first;
trans.port_last = s_port_last ? s_port_last : trans.client_port_last;
}
if (gf_rtp_setup_transport(tmp->rtp_ch, &trans, NULL) != GF_OK) {
RP_DeleteStream(tmp);
return NULL;
}
/*setup depacketizer*/
tmp->depacketizer = gf_rtp_depacketizer_new(media, rtp_sl_packet_cbk, tmp);
if (!tmp->depacketizer) {
RP_DeleteStream(tmp);
return NULL;
}
/*setup channel*/
gf_rtp_setup_payload(tmp->rtp_ch, map);
// tmp->status = NM_Disconnected;
ctrl = (char *) gf_modules_get_option((GF_BaseInterface *) gf_term_get_service_interface(rtp->service), "Streaming", "DisableRTCP");
if (!ctrl || stricmp(ctrl, "yes")) tmp->flags |= RTP_ENABLE_RTCP;
/*setup NAT keep-alive*/
ctrl = (char *) gf_modules_get_option((GF_BaseInterface *) gf_term_get_service_interface(rtp->service), "Streaming", "NATKeepAlive");
if (ctrl) gf_rtp_enable_nat_keepalive(tmp->rtp_ch, atoi(ctrl));
tmp->range_start = Start;
tmp->range_end = End;
if (End != -1.0) tmp->flags |= RTP_HAS_RANGE;
if (force_bcast) tmp->flags |= RTP_FORCE_BROADCAST;
if (is_migration) {
tmp->current_start = (Double) CurrentTime;
tmp->check_rtp_time = RTP_SET_TIME_RTP;
gf_rtp_set_info_rtp(tmp->rtp_ch, rtp_seq, rtp_time, ssrc);
tmp->status = RTP_SessionResume;
}
if (rvc_predef) {
tmp->depacketizer->sl_map.rvc_predef = rvc_predef ;
} else if (rvc_config_att) {
char *rvc_data=NULL;
u32 rvc_size;
Bool is_gz = 0;
if (!strncmp(rvc_config_att, "data:application/rvc-config+xml", 32) && strstr(rvc_config_att, "base64") ) {
char *data = strchr(rvc_config_att, ',');
if (data) {
rvc_size = (u32) strlen(data) * 3 / 4 + 1;
rvc_data = gf_malloc(sizeof(char) * rvc_size);
rvc_size = gf_base64_decode(data, (u32) strlen(data), rvc_data, rvc_size);
rvc_data[rvc_size] = 0;
}
if (!strncmp(rvc_config_att, "data:application/rvc-config+xml+gz", 35)) is_gz = 1;
} else if (!strnicmp(rvc_config_att, "http://", 7) || !strnicmp(rvc_config_att, "https://", 8) ) {
char *mime;
if (gf_dm_get_file_memory(rvc_config_att, &rvc_data, &rvc_size, &mime) == GF_OK) {
if (mime && strstr(mime, "+gz")) is_gz = 1;
if (mime) gf_free(mime);
}
}
if (rvc_data) {
if (is_gz) {
#ifdef GPAC_DISABLE_ZLIB
fprintf(stderr, "Error: no zlib support - RVC not supported in RTP\n");
return NULL;
#endif
gf_gz_decompress_payload(rvc_data, rvc_size, &tmp->depacketizer->sl_map.rvc_config, &tmp->depacketizer->sl_map.rvc_config_size);
gf_free(rvc_data);
} else {
tmp->depacketizer->sl_map.rvc_config = rvc_data;
tmp->depacketizer->sl_map.rvc_config_size = rvc_size;
}
}
}
return tmp;
}
