static void term_on_data_packet(GF_ClientService *service, LPNETCHANNEL netch, char *data, u32 data_size, GF_SLHeader *hdr, GF_Err reception_status)
{
GF_Channel *ch;
ch = gf_term_get_channel(service, netch);
if (!ch)
return;
if (reception_status==GF_EOS) {
gf_es_on_eos(ch);
return;
}
/*otherwise dispatch with error code*/
gf_es_receive_sl_packet(service, ch, data, data_size, hdr, reception_status);
}
/*scalable browsing of input channels: find the AU with the lowest DTS on all input channels*/
static void Decoder_GetNextAU(GF_Codec *codec, GF_Channel **activeChannel, GF_DBUnit **nextAU)
{
GF_Channel *ch;
GF_DBUnit *AU;
u32 count, minDTS, i;
count = gf_list_count(codec->inChannels);
*nextAU = NULL;
*activeChannel = NULL;
if (!count) return;
minDTS = (u32) -1;
/*reverse browsing to make sure we fill enhancement before base layer*/
for (i=count;i>0;i--) {
ch = (GF_Channel*)gf_list_get(codec->inChannels, i-1);
if ((codec->type==GF_STREAM_OCR) && ch->IsClockInit) {
/*check duration - we assume that scalable OCR streams are just pure nonsense...*/
if (ch->is_pulling && codec->odm->duration) {
if (gf_clock_time(codec->ck) > codec->odm->duration)
gf_es_on_eos(ch);
}
return;
}
AU = gf_es_get_au(ch);
if (!AU) {
if (! (*activeChannel)) *activeChannel = ch;
continue;
}
/*we use <= to make sure we first fetch data on base layer if same
DTS (which is possible in spatial scalability)*/
if (AU->DTS <= minDTS) {
minDTS = AU->DTS;
*activeChannel = ch;
*nextAU = AU;
}
}
/*FIXME - we're breaking sync (couple of frames delay)*/
if (codec->is_reordering && *nextAU)
(*nextAU)->CTS = (*nextAU)->DTS;
}
/*handles reception of an SL-PDU, logical or physical*/
void gf_es_receive_sl_packet(GF_ClientService *serv, GF_Channel *ch, char *payload, u32 payload_size, GF_SLHeader *header, GF_Err reception_status)
{
GF_SLHeader hdr;
u32 nbAU, OldLength, size, AUSeqNum;
Bool EndAU, NewAU;
if (ch->bypass_sl_and_db) {
GF_SceneDecoder *sdec;
ch->IsClockInit = 1;
if (ch->odm->subscene) {
sdec = (GF_SceneDecoder *)ch->odm->subscene->scene_codec->decio;
} else {
sdec = (GF_SceneDecoder *)ch->odm->codec->decio;
}
gf_mx_p(ch->mx);
sdec->ProcessData(sdec, payload, payload_size, ch->esd->ESID, 0, 0);
gf_mx_v(ch->mx);
return;
}
if (ch->es_state != GF_ESM_ES_RUNNING) return;
if (ch->skip_sl) {
Channel_ReceiveSkipSL(serv, ch, payload, payload_size);
return;
}
if (ch->is_raw_channel) {
ch->CTS = ch->DTS = (u32) (ch->ts_offset + (header->compositionTimeStamp - ch->seed_ts) * 1000 / ch->ts_res);
if (!ch->IsClockInit) {
gf_es_check_timing(ch);
}
if (payload)
gf_es_dispatch_raw_media_au(ch, payload, payload_size, ch->CTS);
return;
}
/*physical SL-PDU - depacketize*/
if (!header) {
u32 SLHdrLen;
if (!payload_size) return;
gf_sl_depacketize(ch->esd->slConfig, &hdr, payload, payload_size, &SLHdrLen);
payload_size -= SLHdrLen;
payload += SLHdrLen;
} else {
hdr = *header;
}
/*we ignore OCRs for the moment*/
if (hdr.OCRflag) {
if (!ch->IsClockInit) {
/*channel is the OCR, re-initialize the clock with the proper OCR*/
if (gf_es_owns_clock(ch)) {
u32 OCR_TS;
/*timestamps of PCR stream haven been shifted - shift the OCR as well*/
if (ch->seed_ts) {
u64 diff_ts;
Double scale = hdr.m2ts_pcr ? 27000000 : ch->esd->slConfig->OCRResolution;
scale /= ch->ts_res;
diff_ts = (u64) (ch->seed_ts * scale);
hdr.objectClockReference -= diff_ts;
}
/*if SL is mapped from network module(eg not coded), OCR=PCR shall be given in 27Mhz units*/
if (hdr.m2ts_pcr) {
OCR_TS = (u32) ( hdr.objectClockReference / 27000);
} else {
OCR_TS = (u32) ( (s64) (hdr.objectClockReference) * ch->ocr_scale);
}
OCR_TS += ch->ts_offset;
ch->clock->clock_init = 0;
gf_clock_set_time(ch->clock, OCR_TS);
/*many TS streams deployed with HLS have broken PCRs - we will check their consistency
when receiving the first AU with DTS/CTS on this channel*/
ch->clock->probe_ocr = 1;
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: initializing clock at STB %d from OCR TS %d (original TS "LLD") - %d buffering - OTB %d\n", ch->esd->ESID, gf_term_get_time(ch->odm->term), OCR_TS, hdr.objectClockReference, ch->clock->Buffering, gf_clock_time(ch->clock) ));
if (ch->clock->clock_init) ch->IsClockInit = 1;
}
}
#if 0
/*adjust clock if M2TS PCR discontinuity*/
else if (hdr.m2ts_pcr==2) {
u32 ck;
u32 OCR_TS = (u32) ( hdr.objectClockReference / 27000);
ck = gf_clock_time(ch->clock);
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: At OTB %d - OCR Discontinuity OCR: adjusting to %d (original TS "LLD") - original clock %d\n", ch->esd->ESID, gf_clock_real_time(ch->clock), OCR_TS, hdr.objectClockReference, ck));
// gf_clock_set_time(ch->clock, (u32) OCR_TS);
}
/*compute clock drift*/
else {
u32 ck;
u32 OCR_TS;
if (hdr.m2ts_pcr) {
OCR_TS = (u32) ( hdr.objectClockReference / 27000);
} else {
OCR_TS = (u32) ( (s64) (hdr.objectClockReference) * ch->ocr_scale);
}
ck = gf_clock_time(ch->clock);
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: At OTB %d adjusting OCR to %d (original TS "LLD") - diff %d\n", ch->esd->ESID, gf_clock_real_time(ch->clock), OCR_TS, hdr.objectClockReference, (s32) OCR_TS - (s32) ck));
// gf_clock_set_time(ch->clock, (u32) OCR_TS);
}
#else
{
u32 ck;
u32 OCR_TS;
if (hdr.m2ts_pcr) {
OCR_TS = (u32) ( hdr.objectClockReference / 27000);
} else {
OCR_TS = (u32) ( (s64) (hdr.objectClockReference) * ch->ocr_scale);
}
ck = gf_clock_time(ch->clock);
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: At OTB %d got OCR %d (original TS "LLD") - diff %d%s\n", ch->esd->ESID, gf_clock_real_time(ch->clock), OCR_TS, hdr.objectClockReference, (s32) OCR_TS - (s32) ck, (hdr.m2ts_pcr==2) ? " - PCR Discontinuity flag" : "" ));
}
#endif
if (!payload_size) return;
}
/*check state*/
if (!ch->codec_resilient && (reception_status==GF_CORRUPTED_DATA)) {
Channel_WaitRAP(ch);
return;
}
if (!ch->esd->slConfig->useAccessUnitStartFlag) {
/*no AU signaling - each packet is an AU*/
if (!ch->esd->slConfig->useAccessUnitEndFlag)
hdr.accessUnitEndFlag = hdr.accessUnitStartFlag = 1;
/*otherwise AU are signaled by end of previous packet*/
else
hdr.accessUnitStartFlag = ch->NextIsAUStart;
}
/*get RAP*/
if (ch->esd->slConfig->hasRandomAccessUnitsOnlyFlag) {
hdr.randomAccessPointFlag = 1;
} else if ((ch->carousel_type!=GF_ESM_CAROUSEL_MPEG2) && (!ch->esd->slConfig->useRandomAccessPointFlag || ch->codec_resilient) ) {
ch->stream_state = 0;
}
if (ch->esd->slConfig->packetSeqNumLength) {
if (ch->pck_sn && hdr.packetSequenceNumber) {
/*repeated -> drop*/
if (ch->pck_sn == hdr.packetSequenceNumber) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: repeated packet, droping\n", ch->esd->ESID));
return;
}
/*if codec has no resiliency check packet drops*/
if (!ch->codec_resilient && !hdr.accessUnitStartFlag) {
if (ch->pck_sn == (u32) (1<<ch->esd->slConfig->packetSeqNumLength) ) {
if (hdr.packetSequenceNumber) {
GF_LOG(GF_LOG_WARNING, GF_LOG_SYNC, ("[SyncLayer] ES%d: packet loss, droping & wait RAP\n", ch->esd->ESID));
Channel_WaitRAP(ch);
return;
}
} else if (ch->pck_sn + 1 != hdr.packetSequenceNumber) {
GF_LOG(GF_LOG_WARNING, GF_LOG_SYNC, ("[SyncLayer] ES%d: packet loss, droping & wait RAP\n", ch->esd->ESID));
Channel_WaitRAP(ch);
return;
}
}
}
ch->pck_sn = hdr.packetSequenceNumber;
}
/*if empty, skip the packet*/
if (hdr.paddingFlag && !hdr.paddingBits) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: Empty packet - skipping\n", ch->esd->ESID));
return;
}
/*IDLE stream shall be processed*/
NewAU = 0;
if (hdr.accessUnitStartFlag) {
NewAU = 1;
ch->NextIsAUStart = 0;
ch->skip_carousel_au = 0;
/*if we have a pending AU, add it*/
if (ch->buffer) {
if (ch->esd->slConfig->useAccessUnitEndFlag) {
GF_LOG(GF_LOG_WARNING, GF_LOG_SYNC, ("[SyncLayer] ES%d: missed end of AU (DTS %d)\n", ch->esd->ESID, ch->DTS));
}
if (ch->codec_resilient) {
if (!ch->IsClockInit && !ch->skip_time_check_for_pending) gf_es_check_timing(ch);
Channel_DispatchAU(ch, 0);
} else {
gf_free(ch->buffer);
ch->buffer = NULL;
ch->AULength = 0;
ch->len = ch->allocSize = 0;
}
}
ch->skip_time_check_for_pending = 0;
AUSeqNum = hdr.AU_sequenceNumber;
/*Get CTS */
if (ch->esd->slConfig->useTimestampsFlag) {
if (hdr.compositionTimeStampFlag) {
ch->net_dts = ch->net_cts = hdr.compositionTimeStamp;
/*get DTS */
if (hdr.decodingTimeStampFlag) ch->net_dts = hdr.decodingTimeStamp;
#if 0
/*until clock is not init check seed ts*/
if (!ch->IsClockInit && (ch->net_dts < ch->seed_ts))
ch->seed_ts = ch->net_dts;
#endif
if (ch->net_cts<ch->seed_ts) {
u64 diff = ch->seed_ts - ch->net_cts;
ch->CTS_past_offset = (u32) (diff * 1000 / ch->ts_res) + ch->ts_offset;
ch->net_dts = ch->net_cts = 0;
ch->CTS = ch->DTS = gf_clock_time(ch->clock);
} else {
if (ch->net_dts>ch->seed_ts) ch->net_dts -= ch->seed_ts;
else ch->net_dts=0;
ch->net_cts -= ch->seed_ts;
ch->CTS_past_offset = 0;
/*TS Wraping not tested*/
ch->CTS = (u32) (ch->ts_offset + (s64) (ch->net_cts) * 1000 / ch->ts_res);
ch->DTS = (u32) (ch->ts_offset + (s64) (ch->net_dts) * 1000 / ch->ts_res);
}
if (ch->clock->probe_ocr && gf_es_owns_clock(ch)) {
s32 diff_ts = ch->DTS;
diff_ts -= ch->clock->init_time;
if (ABS(diff_ts) > 10000) {
GF_LOG(GF_LOG_ERROR, GF_LOG_SYNC, ("[SyncLayer] ES%d: invalid clock reference detected - DTS %d but OCR %d - using DTS as OCR\n", ch->esd->ESID, ch->DTS, ch->clock->init_time));
ch->clock->clock_init = 0;
gf_clock_set_time(ch->clock, ch->DTS-1000);
}
ch->clock->probe_ocr = 0;
}
ch->no_timestamps = 0;
} else {
ch->no_timestamps = 1;
}
} else {
/*use CU duration*/
if (!ch->IsClockInit)
ch->DTS = ch->CTS = ch->ts_offset;
if (!ch->esd->slConfig->AUSeqNumLength) {
if (!ch->au_sn) {
ch->CTS = ch->ts_offset;
ch->au_sn = 1;
} else {
ch->CTS += ch->esd->slConfig->CUDuration;
}
} else {
//use the sequence number to get the TS
if (AUSeqNum < ch->au_sn) {
nbAU = ( (1<<ch->esd->slConfig->AUSeqNumLength) - ch->au_sn) + AUSeqNum;
} else {
nbAU = AUSeqNum - ch->au_sn;
}
ch->CTS += nbAU * ch->esd->slConfig->CUDuration;
}
}
/*if the AU Length is carried in SL, get its size*/
if (ch->esd->slConfig->AULength > 0) {
ch->AULength = hdr.accessUnitLength;
} else {
ch->AULength = 0;
}
/*carousel for repeated AUs.*/
if (ch->carousel_type) {
/* not used : Bool use_rap = hdr.randomAccessPointFlag; */
if (ch->carousel_type==GF_ESM_CAROUSEL_MPEG2) {
AUSeqNum = hdr.m2ts_version_number_plus_one-1;
/*mpeg-2 section carrouseling does not take into account the RAP nature of the tables*/
if (AUSeqNum==ch->au_sn) {
if (ch->stream_state) {
ch->stream_state=0;
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: MPEG-2 Carousel: tuning in\n", ch->esd->ESID));
} else {
ch->skip_carousel_au = 1;
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: MPEG-2 Carousel: repeated AU (TS %d) - skipping\n", ch->esd->ESID, ch->CTS));
return;
}
} else {
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: MPEG-2 Carousel: updated AU (TS %d)\n", ch->esd->ESID, ch->CTS));
ch->stream_state=0;
ch->au_sn = AUSeqNum;
}
} else {
if (hdr.randomAccessPointFlag) {
/*initial tune-in*/
if (ch->stream_state==1) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: RAP Carousel found (TS %d) - tuning in\n", ch->esd->ESID, ch->CTS));
ch->au_sn = AUSeqNum;
ch->stream_state = 0;
}
/*carousel RAP*/
else if (AUSeqNum == ch->au_sn) {
/*error recovery*/
if (ch->stream_state==2) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: RAP Carousel found (TS %d) - recovering\n", ch->esd->ESID, ch->CTS));
ch->stream_state = 0;
}
else {
ch->skip_carousel_au = 1;
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: RAP Carousel found (TS %d) - skipping\n", ch->esd->ESID, ch->CTS));
return;
}
}
/*regular RAP*/
else {
if (ch->stream_state==2) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: RAP Carousel found (TS %d) - recovering from previous errors\n", ch->esd->ESID, ch->CTS));
}
ch->au_sn = AUSeqNum;
ch->stream_state = 0;
}
}
/*regular AU but waiting for RAP*/
else if (ch->stream_state) {
#if 0
ch->skip_carousel_au = 1;
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: Waiting for RAP Carousel - skipping\n", ch->esd->ESID));
return;
#else
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: Tuning in before RAP\n", ch->esd->ESID));
#endif
}
/*previous packet(s) loss: check for critical or non-critical AUs*/
else if (reception_status == GF_REMOTE_SERVICE_ERROR) {
if (ch->au_sn == AUSeqNum) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: Lost a non critical packet\n", ch->esd->ESID));
}
/*Packet lost are critical*/
else {
ch->stream_state = 2;
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: Lost a critical packet - skipping\n", ch->esd->ESID));
return;
}
} else {
ch->au_sn = AUSeqNum;
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: NON-RAP AU received (TS %d)\n", ch->esd->ESID, ch->DTS));
}
}
}
/*no carousel signaling, tune-in at first RAP*/
else if (hdr.randomAccessPointFlag) {
ch->stream_state = 0;
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: RAP AU received\n", ch->esd->ESID));
}
/*waiting for RAP, return*/
else if (ch->stream_state) {
GF_LOG(GF_LOG_INFO, GF_LOG_SYNC, ("[SyncLayer] ES%d: Waiting for RAP - skipping AU (DTS %d)\n", ch->esd->ESID, ch->DTS));
return;
}
}
/*update the RAP marker on a packet base (to cope with AVC/H264 NALU->AU reconstruction)*/
if (hdr.randomAccessPointFlag) ch->IsRap = 1;
/*get AU end state*/
OldLength = ch->buffer ? ch->len : 0;
EndAU = hdr.accessUnitEndFlag;
if (ch->AULength == OldLength + payload_size) EndAU = 1;
if (EndAU) ch->NextIsAUStart = 1;
if (EndAU && !ch->IsClockInit) gf_es_check_timing(ch);
/* we need to skip all the packets of the current AU in the carousel scenario */
if (ch->skip_carousel_au == 1) return;
if (!payload_size && EndAU && ch->buffer) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_SYNC, ("[SyncLayer] ES%d: Empty packet, flushing buffer\n", ch->esd->ESID));
Channel_DispatchAU(ch, 0);
return;
}
if (!payload_size) return;
/*missed begining, unusable*/
if (!ch->buffer && !NewAU) {
if (ch->esd->slConfig->useAccessUnitStartFlag) {
GF_LOG(GF_LOG_ERROR, GF_LOG_SYNC, ("[SyncLayer] ES%d: missed begin of AU\n", ch->esd->ESID));
}
if (ch->codec_resilient) NewAU = 1;
else return;
}
/*Write the Packet payload to the buffer*/
if (NewAU) {
/*we should NEVER have a bitstream at this stage*/
assert(!ch->buffer);
/*ignore length fields*/
size = payload_size + ch->media_padding_bytes;
ch->buffer = (char*)gf_malloc(sizeof(char) * size);
if (!ch->buffer) {
assert(0);
return;
}
ch->allocSize = size;
memset(ch->buffer, 0, sizeof(char) * size);
ch->len = 0;
}
if (!ch->esd->slConfig->usePaddingFlag) hdr.paddingFlag = 0;
if (ch->ipmp_tool) {
GF_Err e;
GF_IPMPEvent evt;
memset(&evt, 0, sizeof(evt));
evt.event_type=GF_IPMP_TOOL_PROCESS_DATA;
evt.channel = ch;
evt.data = payload;
evt.data_size = payload_size;
evt.is_encrypted = hdr.isma_encrypted;
evt.isma_BSO = hdr.isma_BSO;
e = ch->ipmp_tool->process(ch->ipmp_tool, &evt);
/*we discard undecrypted AU*/
if (e) {
if (e==GF_EOS) {
gf_es_on_eos(ch);
/*restart*/
if (evt.restart_requested) {
if (ch->odm->parentscene->is_dynamic_scene) {
gf_scene_restart_dynamic(ch->odm->parentscene, 0);
} else {
mediacontrol_restart(ch->odm);
}
}
}
return;
}
}
gf_es_lock(ch, 1);
if (hdr.paddingFlag && !EndAU) {
/*to do - this shouldn't happen anyway */
} else {
/*check if enough space*/
size = ch->allocSize;
if (size && (payload_size + ch->len <= size)) {
memcpy(ch->buffer+ch->len, payload, payload_size);
ch->len += payload_size;
} else {
size = payload_size + ch->len + ch->media_padding_bytes;
ch->buffer = (char*)gf_realloc(ch->buffer, sizeof(char) * size);
memcpy(ch->buffer+ch->len, payload, payload_size);
ch->allocSize = size;
ch->len += payload_size;
}
if (hdr.paddingFlag) ch->padingBits = hdr.paddingBits;
}
if (EndAU) Channel_DispatchAU(ch, hdr.au_duration);
gf_es_lock(ch, 0);
}
GF_DBUnit *gf_es_get_au(GF_Channel *ch)
{
Bool comp, is_new_data;
GF_Err e, state;
GF_SLHeader slh;
if (ch->es_state != GF_ESM_ES_RUNNING) return NULL;
if (!ch->is_pulling) {
/*we must update buffering before fetching in order to stop buffering for streams with very few
updates (especially streams with one update, like most of OD streams)*/
if (ch->BufferOn) Channel_UpdateBuffering(ch, 0);
if (ch->first_au_fetched && ch->BufferOn) return NULL;
return ch->AU_buffer_first;
}
/*pull from stream - resume clock if needed*/
ch_buffer_off(ch);
memset(&slh, 0, sizeof(GF_SLHeader));
e = gf_term_channel_get_sl_packet(ch->service, ch, (char **) &ch->AU_buffer_pull->data, &ch->AU_buffer_pull->dataLength, &slh, &comp, &state, &is_new_data);
if (e) state = e;
switch (state) {
case GF_EOS:
gf_es_on_eos(ch);
return NULL;
case GF_OK:
break;
default:
{
char m[100];
sprintf(m, "Data reception failure on channel %d", ch->esd->ESID);
gf_term_message(ch->odm->term, ch->service->url , m, state);
return NULL;
}
}
assert(!comp);
/*update timing if new stream data but send no data*/
if (is_new_data) {
gf_es_receive_sl_packet(ch->service, ch, NULL, 0, &slh, GF_OK);
if (ch->ipmp_tool) {
GF_IPMPEvent evt;
memset(&evt, 0, sizeof(evt));
evt.event_type=GF_IPMP_TOOL_PROCESS_DATA;
evt.data = ch->AU_buffer_pull->data;
evt.data_size = ch->AU_buffer_pull->dataLength;
evt.is_encrypted = slh.isma_encrypted;
evt.isma_BSO = slh.isma_BSO;
evt.channel = ch;
e = ch->ipmp_tool->process(ch->ipmp_tool, &evt);
/*we discard undecrypted AU*/
if (e) {
if (e==GF_EOS) {
gf_es_on_eos(ch);
/*restart*/
if (evt.restart_requested) {
if (ch->odm->parentscene->is_dynamic_scene) {
gf_scene_restart_dynamic(ch->odm->parentscene, 0);
} else {
mediacontrol_restart(ch->odm);
}
}
}
gf_term_channel_release_sl_packet(ch->service, ch);
return NULL;
}
}
}
/*this may happen in file streaming when data has not arrived yet, in which case we discard the AU*/
if (!ch->AU_buffer_pull->data) {
gf_term_channel_release_sl_packet(ch->service, ch);
return NULL;
}
ch->AU_buffer_pull->CTS = (u32) ch->CTS;
ch->AU_buffer_pull->DTS = (u32) ch->DTS;
ch->AU_buffer_pull->PaddingBits = ch->padingBits;
if (ch->IsRap) ch->AU_buffer_pull->flags |= GF_DB_AU_RAP;
return ch->AU_buffer_pull;
}
/*special handling of decoders not using ESM*/
static GF_Err PrivateScene_Process(GF_Codec *codec, u32 TimeAvailable)
{
Bool resume_clock;
u32 now;
GF_Channel *ch;
GF_Scene *scene_locked;
GF_SceneDecoder *sdec = (GF_SceneDecoder *)codec->decio;
GF_Err e = GF_OK;
/*muting systems codec means we don't decode until mute is off - likely there will be visible however
there is no other way to decode system AUs without modifying the content, which is what mute is about on visual...*/
if (codec->Muted) return GF_OK;
if (codec->Status == GF_ESM_CODEC_EOS) {
gf_term_stop_codec(codec);
return GF_OK;
}
scene_locked = codec->odm->subscene ? codec->odm->subscene : codec->odm->parentscene;
ch = (GF_Channel*)gf_list_get(codec->inChannels, 0);
if (!ch) return GF_OK;
resume_clock = 0;
/*init channel clock*/
if (!ch->IsClockInit) {
Bool started;
/*signal seek*/
if (!gf_mx_try_lock(scene_locked->root_od->term->compositor->mx)) return GF_OK;
gf_es_init_dummy(ch);
sdec->ProcessData(sdec, NULL, 0, ch->esd->ESID, -1, GF_CODEC_LEVEL_NORMAL);
gf_mx_v(scene_locked->root_od->term->compositor->mx);
started = gf_clock_is_started(ch->clock);
/*let's be nice to the scene loader (that usually involves quite some parsing), pause clock while
parsing*/
gf_clock_pause(ch->clock);
codec->last_unit_dts = 0;
if (!started) return GF_OK;
}
codec->odm->current_time = codec->last_unit_cts = gf_clock_time(codec->ck);
/*lock scene*/
GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[PrivateDec] Codec %s Processing at %d\n", sdec->module_name , codec->odm->current_time));
if (!gf_mx_try_lock(scene_locked->root_od->term->compositor->mx)) return GF_OK;
now = gf_term_get_time(codec->odm->term);
e = sdec->ProcessData(sdec, NULL, 0, ch->esd->ESID, codec->odm->current_time, GF_CODEC_LEVEL_NORMAL);
now = gf_term_get_time(codec->odm->term) - now;
codec->last_unit_dts ++;
/*resume on error*/
if (e && (codec->last_unit_dts<2) ) {
gf_clock_resume(ch->clock);
codec->last_unit_dts = 2;
}
/*resume clock on 2nd decode (we assume parsing is done in 2 steps, one for first frame display, one for complete parse)*/
else if (codec->last_unit_dts==2) {
gf_clock_resume(ch->clock);
}
codec_update_stats(codec, 0, now);
gf_mx_v(scene_locked->root_od->term->compositor->mx);
if (e==GF_EOS) {
/*first end of stream, evaluate duration*/
//if (!codec->odm->duration) gf_odm_set_duration(codec->odm, ch, codec->odm->current_time);
gf_es_on_eos(ch);
return GF_OK;
}
return e;
}
static void MediaDecoder_GetNextAU(GF_Codec *codec, GF_Channel **activeChannel, GF_DBUnit **nextAU)
{
GF_Channel *ch;
GF_DBUnit *AU;
u32 count, minDTS, i;
count = gf_list_count(codec->inChannels);
*nextAU = NULL;
*activeChannel = NULL;
if (!count) return;
minDTS = 0;
/*browse from base to top layer*/
for (i=0;i<count;i++) {
ch = (GF_Channel*)gf_list_get(codec->inChannels, i);
if ((codec->type==GF_STREAM_OCR) && ch->IsClockInit) {
/*check duration - we assume that scalable OCR streams are just pure nonsense...*/
if (ch->is_pulling && codec->odm->duration) {
if (gf_clock_time(codec->ck) > codec->odm->duration)
gf_es_on_eos(ch);
}
return;
}
AU = gf_es_get_au(ch);
if (!AU) {
if (! (*activeChannel)) *activeChannel = ch;
continue;
}
/*aggregate all AUs with the same timestamp on the base AU and delete the upper layers)*/
if (! *nextAU) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[%s] ODM%d#CH%d AU CTS %d selected as first layer\n", codec->decio->module_name, codec->odm->OD->objectDescriptorID, ch->esd->ESID, AU->CTS));
*nextAU = AU;
*activeChannel = ch;
minDTS = AU->DTS;
} else if (AU->DTS == minDTS) {
GF_DBUnit *baseAU = *nextAU;
assert(baseAU);
baseAU->data = gf_realloc(baseAU->data, baseAU->dataLength + AU->dataLength);
memcpy(baseAU->data + baseAU->dataLength , AU->data, AU->dataLength);
baseAU->dataLength += AU->dataLength;
GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[%s] ODM%d#CH%d AU CTS %d reaggregated on base layer %d\n", codec->decio->module_name, codec->odm->OD->objectDescriptorID, ch->esd->ESID, AU->CTS, (*activeChannel)->esd->ESID));
gf_es_drop_au(ch);
} else {
break;
}
}
if (codec->is_reordering && *nextAU && codec->first_frame_dispatched) {
if ((*activeChannel)->esd->slConfig->no_dts_signaling) {
u32 CTS = (*nextAU)->CTS;
/*reordering !!*/
u32 prev_ts_diff;
u32 diff = 0;
if (codec->recomputed_cts && (codec->recomputed_cts > (*nextAU)->CTS)) {
diff = codec->recomputed_cts - CTS;
}
prev_ts_diff = (CTS > codec->last_unit_cts) ? (CTS - codec->last_unit_cts) : (codec->last_unit_cts - CTS);
if (!diff) diff = prev_ts_diff;
else if (prev_ts_diff && (prev_ts_diff < diff) ) diff = prev_ts_diff;
if (!codec->min_au_duration || (diff < codec->min_au_duration))
codec->min_au_duration = diff;
} else {
codec->min_au_duration = 0;
/*FIXME - we're breaking sync (couple of frames delay)*/
(*nextAU)->CTS = (*nextAU)->DTS;
}
}
}
