- /* Increase by 100% */
- p_sys->i_mtu *= 2;
- msg_Dbg( p_access, "increasing MTU to %d", p_sys->i_mtu );
- }
-
- return p_block;
-}
-
-/*****************************************************************************
- * BlockParseRTP/BlockRTP:
- *****************************************************************************/
-static block_t *BlockParseRTP( access_t *p_access, block_t *p_block )
-{
- int i_rtp_version;
- int i_CSRC_count;
- int i_payload_type;
- int i_skip = 0;
-
- if( p_block->i_buffer < RTP_HEADER_LEN )
- goto trash;
-
- /* Parse the header and make some verifications.
- * See RFC 1889 & RFC 2250. */
- i_rtp_version = ( p_block->p_buffer[0] & 0xC0 ) >> 6;
- i_CSRC_count = ( p_block->p_buffer[0] & 0x0F );
- i_payload_type = ( p_block->p_buffer[1] & 0x7F );
-
- if ( i_rtp_version != 2 )
- msg_Dbg( p_access, "RTP version is %u, should be 2", i_rtp_version );
-
- if( i_payload_type == 14 )
- i_skip = 4;
- else if( i_payload_type != 33 && i_payload_type != 32 )
- msg_Dbg( p_access, "unsupported RTP payload type (%u)", i_payload_type );
-
- i_skip += RTP_HEADER_LEN + 4*i_CSRC_count;
-
- /* A CSRC extension field is 32 bits in size (4 bytes) */
- if( i_skip >= p_block->i_buffer )
- goto trash;
-
- /* Return the packet without the RTP header. */
- p_block->i_buffer -= i_skip;
- p_block->p_buffer += i_skip;
-
- return p_block;
-
-trash:
- msg_Warn( p_access, "received a too short packet for RTP" );
- block_Release( p_block );
- return NULL;
-}
-
-static block_t *BlockRTP( access_t *p_access )
-{
- return BlockParseRTP( p_access, BlockUDP( p_access ) );
-}
-
-/*****************************************************************************
- * BlockChoose: decide between RTP and UDP
- *****************************************************************************/
-static block_t *BlockChoose( access_t *p_access )
-{
- block_t *p_block;
- int i_rtp_version;
- int i_CSRC_count;
- int i_payload_type;
-
- if( ( p_block = BlockUDP( p_access ) ) == NULL )