static void rtp_sl_packet_cbk(void *udta, char *payload, u32 size, GF_SLHeader *hdr, GF_Err e)
{
u64 cts, dts;
RTPStream *ch = (RTPStream *)udta;
if (!ch->rtcp_init) {
if (!ch->rtcp_check_start) {
ch->rtcp_check_start = gf_sys_clock();
return;
}
else if (gf_sys_clock() - ch->rtcp_check_start <= RTCP_DEFAULT_TIMEOUT_MS) {
return;
}
GF_LOG(GF_LOG_WARNING, GF_LOG_RTP, ("[RTP] Timeout for RTCP: no SR recevied after %d ms - forcing playback, sync may be broken\n", RTCP_DEFAULT_TIMEOUT_MS));
ch->rtcp_init = 1;
}
cts = hdr->compositionTimeStamp;
dts = hdr->decodingTimeStamp;
hdr->compositionTimeStamp -= ch->ts_offset;
hdr->decodingTimeStamp -= ch->ts_offset;
if (ch->rtp_ch->packet_loss) e = GF_REMOTE_SERVICE_ERROR;
if (ch->owner->first_packet_drop && (hdr->packetSequenceNumber >= ch->owner->first_packet_drop) ) {
if ( (hdr->packetSequenceNumber - ch->owner->first_packet_drop) % ch->owner->frequency_drop)
gf_service_send_packet(ch->owner->service, ch->channel, payload, size, hdr, e);
} else {
gf_service_send_packet(ch->owner->service, ch->channel, payload, size, hdr, e);
}
hdr->compositionTimeStamp = cts;
hdr->decodingTimeStamp = dts;
}
void OGG_EndOfFile(OGGReader *read)
{
OGGStream *st;
u32 i=0;
while ((st = gf_list_enum(read->streams, &i))) {
gf_service_send_packet(read->service, st->ch, NULL, 0, NULL, GF_EOS);
}
}
static void AC3_OnLiveData(AC3Reader *read, const char *data, u32 data_size)
{
u64 pos;
Bool sync;
GF_BitStream *bs;
GF_AC3Header hdr;
memset(&hdr, 0, sizeof(GF_AC3Header));
read->data = gf_realloc(read->data, sizeof(char)*(read->data_size+data_size) );
memcpy(read->data + read->data_size, data, sizeof(char)*data_size);
read->data_size += data_size;
if (read->needs_connection) {
read->needs_connection = 0;
bs = gf_bs_new((char *) read->data, read->data_size, GF_BITSTREAM_READ);
sync = gf_ac3_parser_bs(bs, &hdr, GF_TRUE);
gf_bs_del(bs);
if (!sync) return;
read->nb_ch = hdr.channels;
read->sample_rate = hdr.sample_rate;
read->is_live = 1;
memset(&read->sl_hdr, 0, sizeof(GF_SLHeader));
gf_service_connect_ack(read->service, NULL, GF_OK);
AC3_SetupObject(read);
}
if (!read->ch) return;
/*need a full ac3 header*/
if (read->data_size<=7) return;
bs = gf_bs_new((char *) read->data, read->data_size, GF_BITSTREAM_READ);
hdr.framesize = 0;
pos = 0;
while (gf_ac3_parser_bs(bs, &hdr, GF_FALSE)) {
pos = gf_bs_get_position(bs);
read->sl_hdr.accessUnitStartFlag = 1;
read->sl_hdr.accessUnitEndFlag = 1;
read->sl_hdr.AU_sequenceNumber++;
read->sl_hdr.compositionTimeStampFlag = 1;
read->sl_hdr.compositionTimeStamp += 1536;
gf_service_send_packet(read->service, read->ch, (char *) read->data + pos, hdr.framesize, &read->sl_hdr, GF_OK);
gf_bs_skip_bytes(bs, hdr.framesize);
}
pos = gf_bs_get_position(bs);
gf_bs_del(bs);
if (pos) {
u8 *d;
read->data_size -= (u32) pos;
d = gf_malloc(sizeof(char) * read->data_size);
memcpy(d, read->data + pos, sizeof(char) * read->data_size);
gf_free(read->data);
read->data = d;
}
AC3_RegulateDataRate(read);
}
void RP_ProcessRTCP(RTPStream *ch, char *pck, u32 size)
{
Bool has_sr;
GF_Err e;
if (ch->status == RTP_Connected) return;
ch->rtcp_bytes += size;
e = gf_rtp_decode_rtcp(ch->rtp_ch, pck, size, &has_sr);
if (e<0) return;
/*update sync if on pure RTP*/
if (!ch->rtcp_init && has_sr) {
Double ntp_clock;
ntp_clock = ch->rtp_ch->last_SR_NTP_sec;
ntp_clock += ((Double)ch->rtp_ch->last_SR_NTP_frac)/0xFFFFFFFF;
if (!ch->owner->last_ntp) {
//add safety in case this RTCP report is received before another report
//that was supposed to come in earlier (with earlier NTP)
//Double safety_offset, time = ch->rtp_ch->last_SR_rtp_time;
//time /= ch->rtp_ch->TimeScale;
//safety_offset = time/2;
ch->owner->last_ntp = ntp_clock;
}
if (ntp_clock >= ch->owner->last_ntp) {
ntp_clock -= ch->owner->last_ntp;
} else {
ntp_clock = 0;
}
//assert(ch->rtp_ch->last_SR_rtp_time >= (u64) (ntp_clock * ch->rtp_ch->TimeScale));
ch->ts_offset = ch->rtp_ch->last_SR_rtp_time;
ch->ts_offset -= (s64) (ntp_clock * ch->rtp_ch->TimeScale);
GF_LOG(GF_LOG_INFO, GF_LOG_RTP, ("[RTCP] At %d Using Sender Report to map RTP TS %d to NTP clock %g - new TS offset "LLD" \n",
gf_sys_clock(), ch->rtp_ch->last_SR_rtp_time, ntp_clock, ch->ts_offset
));
ch->rtcp_init = 1;
ch->check_rtp_time = RTP_SET_TIME_NONE;
}
if (e == GF_EOS) {
ch->flags |= RTP_EOS;
ch->stat_stop_time = gf_sys_clock();
gf_service_send_packet(ch->owner->service, ch->channel, NULL, 0, NULL, GF_EOS);
}
}
static u32 FFDemux_Run(void *par)
{
AVPacket pkt;
s64 seek_to;
GF_NetworkCommand com;
GF_NetworkCommand map;
GF_SLHeader slh;
FFDemux *ffd = (FFDemux *) par;
memset(&map, 0, sizeof(GF_NetworkCommand));
map.command_type = GF_NET_CHAN_MAP_TIME;
memset(&com, 0, sizeof(GF_NetworkCommand));
com.command_type = GF_NET_BUFFER_QUERY;
memset(&slh, 0, sizeof(GF_SLHeader));
slh.compositionTimeStampFlag = slh.decodingTimeStampFlag = 1;
while (ffd->is_running) {
//nothing connected, wait
if (!ffd->video_ch && !ffd->audio_ch) {
gf_sleep(100);
continue;
}
if ((ffd->seek_time>=0) && ffd->seekable) {
seek_to = (s64) (AV_TIME_BASE*ffd->seek_time);
av_seek_frame(ffd->ctx, -1, seek_to, AVSEEK_FLAG_BACKWARD);
ffd->seek_time = -1;
}
pkt.stream_index = -1;
/*EOF*/
if (av_read_frame(ffd->ctx, &pkt) <0) break;
if (pkt.pts == AV_NOPTS_VALUE) pkt.pts = pkt.dts;
if (!pkt.dts) pkt.dts = pkt.pts;
slh.compositionTimeStamp = pkt.pts;
slh.decodingTimeStamp = pkt.dts;
gf_mx_p(ffd->mx);
/*blindly send audio as soon as video is init*/
if (ffd->audio_ch && (pkt.stream_index == ffd->audio_st) ) {
slh.compositionTimeStamp *= ffd->audio_tscale.num;
slh.decodingTimeStamp *= ffd->audio_tscale.num;
gf_service_send_packet(ffd->service, ffd->audio_ch, (char *) pkt.data, pkt.size, &slh, GF_OK);
}
else if (ffd->video_ch && (pkt.stream_index == ffd->video_st)) {
slh.compositionTimeStamp *= ffd->video_tscale.num;
slh.decodingTimeStamp *= ffd->video_tscale.num;
slh.randomAccessPointFlag = pkt.flags&AV_PKT_FLAG_KEY ? 1 : 0;
gf_service_send_packet(ffd->service, ffd->video_ch, (char *) pkt.data, pkt.size, &slh, GF_OK);
}
gf_mx_v(ffd->mx);
av_free_packet(&pkt);
/*sleep untill the buffer occupancy is too low - note that this work because all streams in this
demuxer are synchronized*/
while (ffd->audio_run || ffd->video_run) {
gf_service_command(ffd->service, &com, GF_OK);
if (com.buffer.occupancy < com.buffer.max)
break;
gf_sleep(1);
}
if (!ffd->audio_run && !ffd->video_run) break;
}
/*signal EOS*/
if (ffd->audio_ch) gf_service_send_packet(ffd->service, ffd->audio_ch, NULL, 0, NULL, GF_EOS);
if (ffd->video_ch) gf_service_send_packet(ffd->service, ffd->video_ch, NULL, 0, NULL, GF_EOS);
ffd->is_running = 2;
return 0;
}
void RP_ProcessRTP(RTPStream *ch, char *pck, u32 size)
{
GF_NetworkCommand com;
GF_Err e;
GF_RTPHeader hdr;
u32 PayloadStart;
ch->rtp_bytes += size;
/*first decode RTP*/
e = gf_rtp_decode_rtp(ch->rtp_ch, pck, size, &hdr, &PayloadStart);
/*corrupted or NULL data*/
if (e || (PayloadStart >= size)) {
//gf_service_send_packet(ch->owner->service, ch->channel, NULL, 0, NULL, GF_CORRUPTED_DATA);
return;
}
/*if we must notify some timing, do it now. If the channel has no range, this should NEVER be called*/
if (ch->check_rtp_time /*&& gf_rtp_is_active(ch->rtp_ch)*/) {
Double ch_time;
/*it may happen that we still receive packets from a previous "play" request. If this is the case,
filter until we reach the indicated rtptime*/
if (ch->rtp_ch->rtp_time
&& (ch->rtp_ch->rtp_first_SN > hdr.SequenceNumber)
&& (ch->rtp_ch->rtp_time < hdr.TimeStamp)
) {
GF_LOG(GF_LOG_WARNING, GF_LOG_RTP, ("[RTP] Rejecting too early packet (TS %d vs signaled rtp time %d - diff %d ms)\n",
hdr.TimeStamp, ch->rtp_ch->rtp_time, ((hdr.TimeStamp - ch->rtp_ch->rtp_time)*1000) / ch->rtp_ch->TimeScale));
return;
}
ch_time = gf_rtp_get_current_time(ch->rtp_ch);
/*this is the first packet on the channel (no PAUSE)*/
if (ch->check_rtp_time == RTP_SET_TIME_RTP) {
/*Note: in a SEEK with RTSP, the rtp-info time given by the server is
the rtp time of the desired range. But the server may (and should) send from
the previous I frame on video, so the time of the first rtp packet after
a SEEK can actually be less than CurrentStart. We don't drop these
packets in order to see the maximum video. We could drop it, this would mean
wait for next RAP...*/
memset(&com, 0, sizeof(com));
com.command_type = GF_NET_CHAN_MAP_TIME;
com.base.on_channel = ch->channel;
if (ch->rtsp) {
com.map_time.media_time = ch->current_start + ch_time;
} else {
com.map_time.media_time = 0;
}
com.map_time.timestamp = hdr.TimeStamp;
com.map_time.reset_buffers = 0;
gf_service_command(ch->owner->service, &com, GF_OK);
GF_LOG(GF_LOG_INFO, GF_LOG_RTP, ("[RTP] Mapping RTP Time seq %d TS %d Media Time %g - rtp info seq %d TS %d\n",
hdr.SequenceNumber, hdr.TimeStamp, com.map_time.media_time, ch->rtp_ch->rtp_first_SN, ch->rtp_ch->rtp_time
));
/*skip RTCP clock init when RTSP is used*/
if (ch->rtsp) ch->rtcp_init = 1;
// if (ch->depacketizer->payt==GF_RTP_PAYT_H264_AVC) ch->depacketizer->flags |= GF_RTP_AVC_WAIT_RAP;
}
/*this is RESUME on channel, filter packet based on time (darwin seems to send
couple of packet before)
do not fetch if we're below 10 ms or <0, because this means we already have
this packet - as the PAUSE is issued with the RTP currentTime*/
else if (ch_time <= 0.021) {
return;
}
ch->check_rtp_time = RTP_SET_TIME_NONE;
}
gf_rtp_depacketizer_process(ch->depacketizer, &hdr, pck + PayloadStart, size - PayloadStart);
/*last check: signal EOS if we're close to end range in case the server do not send RTCP BYE*/
if ((ch->flags & RTP_HAS_RANGE) && !(ch->flags & RTP_EOS) ) {
/*also check last CTS*/
Double ts = (Double) ((u32) ch->depacketizer->sl_hdr.compositionTimeStamp - hdr.TimeStamp);
ts /= gf_rtp_get_clockrate(ch->rtp_ch);
if (ABSDIFF(ch->range_end, (ts + ch->current_start + gf_rtp_get_current_time(ch->rtp_ch)) ) < 0.2) {
ch->flags |= RTP_EOS;
ch->stat_stop_time = gf_sys_clock();
gf_service_send_packet(ch->owner->service, ch->channel, NULL, 0, NULL, GF_EOS);
}
}
}
static void SAF_NetIO(void *cbk, GF_NETIO_Parameter *param)
{
GF_Err e;
Bool is_rap, go;
SAFChannel *ch;
u32 cts, au_sn, au_size, type, i, stream_id;
u64 bs_pos;
GF_BitStream *bs;
GF_SLHeader sl_hdr;
SAFIn *read = (SAFIn *) cbk;
e = param->error;
/*done*/
if (param->msg_type==GF_NETIO_DATA_TRANSFERED) {
if (read->stream && (read->saf_type==SAF_FILE_REMOTE)) read->saf_type = SAF_FILE_LOCAL;
return;
} else {
/*handle service message*/
gf_service_download_update_stats(read->dnload);
if (param->msg_type!=GF_NETIO_DATA_EXCHANGE) {
if (e<0) {
if (read->needs_connection) {
read->needs_connection = 0;
gf_service_connect_ack(read->service, NULL, e);
}
return;
}
if (read->needs_connection) {
u32 total_size;
gf_dm_sess_get_stats(read->dnload, NULL, NULL, &total_size, NULL, NULL, NULL);
if (!total_size) read->saf_type = SAF_LIVE_STREAM;
}
return;
}
}
if (!param->size) return;
if (!read->run_state) return;
if (read->alloc_size < read->saf_size + param->size) {
read->saf_data = (char*)gf_realloc(read->saf_data, sizeof(char)*(read->saf_size + param->size) );
read->alloc_size = read->saf_size + param->size;
}
memcpy(read->saf_data + read->saf_size, param->data, sizeof(char)*param->size);
read->saf_size += param->size;
/*first AU not complete yet*/
if (read->saf_size<10) return;
bs = gf_bs_new(read->saf_data, read->saf_size, GF_BITSTREAM_READ);
bs_pos = 0;
go = 1;
while (go) {
u64 avail = gf_bs_available(bs);
bs_pos = gf_bs_get_position(bs);
if (avail<10) break;
is_rap = gf_bs_read_int(bs, 1);
au_sn = gf_bs_read_int(bs, 15);
gf_bs_read_int(bs, 2);
cts = gf_bs_read_int(bs, 30);
au_size = gf_bs_read_int(bs, 16);
avail-=8;
if (au_size > avail) break;
assert(au_size>=2);
is_rap = 1;
type = gf_bs_read_int(bs, 4);
stream_id = gf_bs_read_int(bs, 12);
au_size -= 2;
ch = saf_get_channel(read, stream_id, NULL);
switch (type) {
case 1:
case 2:
case 7:
if (ch) {
gf_bs_skip_bytes(bs, au_size);
} else {
SAFChannel *first = (SAFChannel *)gf_list_get(read->channels, 0);
GF_SAFEALLOC(ch, SAFChannel);
ch->stream_id = stream_id;
ch->esd = gf_odf_desc_esd_new(0);
ch->esd->ESID = stream_id;
ch->esd->OCRESID = first ? first->stream_id : stream_id;
ch->esd->slConfig->useRandomAccessPointFlag = 1;
ch->esd->slConfig->AUSeqNumLength = 0;
ch->esd->decoderConfig->objectTypeIndication = gf_bs_read_u8(bs);
ch->esd->decoderConfig->streamType = gf_bs_read_u8(bs);
ch->ts_res = ch->esd->slConfig->timestampResolution = gf_bs_read_u24(bs);
ch->esd->decoderConfig->bufferSizeDB = gf_bs_read_u16(bs);
au_size -= 7;
if ((ch->esd->decoderConfig->objectTypeIndication == 0xFF) && (ch->esd->decoderConfig->streamType == 0xFF) ) {
u16 mimeLen = gf_bs_read_u16(bs);
gf_bs_skip_bytes(bs, mimeLen);
au_size -= mimeLen+2;
}
if (type==7) {
u16 urlLen = gf_bs_read_u16(bs);
ch->esd->URLString = (char*)gf_malloc(sizeof(char)*(urlLen+1));
gf_bs_read_data(bs, ch->esd->URLString, urlLen);
ch->esd->URLString[urlLen] = 0;
au_size -= urlLen+2;
}
if (au_size) {
ch->esd->decoderConfig->decoderSpecificInfo->dataLength = au_size;
ch->esd->decoderConfig->decoderSpecificInfo->data = (char*)gf_malloc(sizeof(char)*au_size);
gf_bs_read_data(bs, ch->esd->decoderConfig->decoderSpecificInfo->data, au_size);
}
if (ch->esd->decoderConfig->streamType==4) ch->buffer_min=100;
else if (ch->esd->decoderConfig->streamType==5) ch->buffer_min=400;
else ch->buffer_min=0;
if (read->needs_connection && (ch->esd->decoderConfig->streamType==GF_STREAM_SCENE)) {
gf_list_add(read->channels, ch);
read->needs_connection = 0;
gf_service_connect_ack(read->service, NULL, GF_OK);
} else if (read->needs_connection) {
gf_odf_desc_del((GF_Descriptor *) ch->esd);
gf_free(ch);
ch = NULL;
} else {
GF_ObjectDescriptor *od;
gf_list_add(read->channels, ch);
od = (GF_ObjectDescriptor*)gf_odf_desc_new(GF_ODF_OD_TAG);
gf_list_add(od->ESDescriptors, ch->esd);
ch->esd = NULL;
od->objectDescriptorID = ch->stream_id;
gf_service_declare_media(read->service, (GF_Descriptor*)od, 0);
}
}
break;
case 4:
if (ch) {
bs_pos = gf_bs_get_position(bs);
memset(&sl_hdr, 0, sizeof(GF_SLHeader));
sl_hdr.accessUnitLength = au_size;
sl_hdr.AU_sequenceNumber = au_sn;
sl_hdr.compositionTimeStampFlag = 1;
sl_hdr.compositionTimeStamp = cts;
sl_hdr.randomAccessPointFlag = is_rap;
if (read->start_range && (read->start_range*ch->ts_res>cts*1000)) {
sl_hdr.compositionTimeStamp = read->start_range*ch->ts_res/1000;
}
gf_service_send_packet(read->service, ch->ch, read->saf_data+bs_pos, au_size, &sl_hdr, GF_OK);
}
gf_bs_skip_bytes(bs, au_size);
break;
case 3:
if (ch) gf_service_send_packet(read->service, ch->ch, NULL, 0, NULL, GF_EOS);
break;
case 5:
go = 0;
read->run_state = 0;
i=0;
while ((ch = (SAFChannel *)gf_list_enum(read->channels, &i))) {
gf_service_send_packet(read->service, ch->ch, NULL, 0, NULL, GF_EOS);
}
break;
}
}
gf_bs_del(bs);
if (bs_pos) {
u32 remain = (u32) (read->saf_size - bs_pos);
if (remain) memmove(read->saf_data, read->saf_data+bs_pos, sizeof(char)*remain);
read->saf_size = remain;
}
SAF_Regulate(read);
}
