void InitSEIMessages()
{
int i;
for (i=0; i<2; i++)
{
sei_message[i].data = malloc(MAXRTPPAYLOADLEN);
if( sei_message[i].data == NULL ) no_mem_exit("InitSEIMessages: sei_message[i].data");
sei_message[i].subPacketType = SEI_PACKET_TYPE;
clear_sei_message(i);
}
// init sei messages
seiSparePicturePayload.data = NULL;
InitSparePicture();
InitSubseqChar();
if (input->NumFramesInELSubSeq != 0)
InitSubseqLayerInfo();
InitSceneInformation(); // JVT-D099
// init panscanrect sei message
InitPanScanRectInfo();
// init user_data_unregistered
InitUser_data_unregistered();
// init user_data_unregistered
InitUser_data_registered_itu_t_t35();
// init user_RandomAccess
InitRandomAccess();
}
int aggregationRTPWriteBits (int Marker, int PacketType, int subPacketType, void * bitstream,
int BitStreamLenInByte, FILE *out)
{
RTPpacket_t *p;
int offset;
// printf( "writing aggregation packet...\n");
assert (out != NULL);
assert (BitStreamLenInByte < 65000);
assert (bitstream != NULL);
assert ((PacketType&0xf) == 4);
// Set RTP structure elements and alloca() memory foor the buffers
p = (RTPpacket_t *) alloca (sizeof (RTPpacket_t));
p->packet=alloca (MAXRTPPACKETSIZE);
p->payload=alloca (MAXRTPPACKETSIZE);
p->v=2;
p->p=0;
p->x=0;
p->cc=0;
p->m=Marker&1;
p->pt=H26LPAYLOADTYPE;
p->seq=CurrentRTPSequenceNumber++;
p->timestamp=CurrentRTPTimestamp;
p->ssrc=H26LSSRC;
offset = 0;
p->payload[offset++] = PacketType; // This is the first byte of the compound packet
// FIRST, write the sei message to aggregation packet, if it is available
if ( HaveAggregationSEI() )
{
p->payload[offset++] = sei_message[AGGREGATION_SEI].subPacketType; // this is the first byte of the first subpacket
*(short*)&(p->payload[offset]) = sei_message[AGGREGATION_SEI].payloadSize;
offset += 2;
memcpy (&p->payload[offset], sei_message[AGGREGATION_SEI].data, sei_message[AGGREGATION_SEI].payloadSize);
offset += sei_message[AGGREGATION_SEI].payloadSize;
clear_sei_message(AGGREGATION_SEI);
}
// SECOND, write other payload to the aggregation packet
// to do ...
// LAST, write the slice data to the aggregation packet
p->payload[offset++] = subPacketType; // this is the first byte of the second subpacket
*(short*)&(p->payload[offset]) = BitStreamLenInByte;
offset += 2;
memcpy (&p->payload[offset], bitstream, BitStreamLenInByte);
offset += BitStreamLenInByte;
p->paylen = offset; // 1 +3 +seiPayload.payloadSize +3 +BitStreamLenInByte
// Now the payload is ready, we can ...
// Generate complete RTP packet
if (ComposeRTPPacket (p) < 0)
{
printf ("Cannot compose RTP packet, exit\n");
exit (-1);
}
if (WriteRTPPacket (p, out) < 0)
{
printf ("Cannot write %d bytes of RTP packet to outfile, exit\n", p->packlen);
exit (-1);
}
return (p->packlen);
}
