- int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i;
- int b_sequence_start = 0;
- int i_temporal_ref = 0;
- int i_picture_coding_type = 0;
- int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
- int b_start_slice = 0;
-
- /* preparse this packet to get some info */
- if( in->i_buffer > 4 )
- {
- uint8_t *p = p_data;
- int i_rest = in->i_buffer;
-
- for( ;; )
- {
- while( i_rest > 4 &&
- ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
- {
- p++;
- i_rest--;
- }
- if( i_rest <= 4 )
- {
- break;
- }
- p += 3;
- i_rest -= 4;
-
- if( *p == 0xb3 )
- {
- /* sequence start code */
- b_sequence_start = 1;
- }
- else if( *p == 0x00 && i_rest >= 4 )
- {
- /* picture */
- i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
- i_picture_coding_type = (p[2] >> 3)&0x07;
-
- if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
- i_picture_coding_type == 3 ) )
- {
- i_ffv = (p[3] >> 2)&0x01;
- i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
- if( i_rest > 4 && i_picture_coding_type == 3 )
- {
- i_fbv = (p[4]>>6)&0x01;
- i_bfc = (p[4]>>3)&0x07;
- }
- }
- }
- else if( *p <= 0xaf )
- {
- b_start_slice = 1;
- }
- }
- }
-
- for( i = 0; i < i_count; i++ )
- {
- int i_payload = __MIN( i_max, i_data );
- block_t *out = block_New( p_stream,
- 16 + i_payload );
- uint32_t h = ( i_temporal_ref << 16 )|
- ( b_sequence_start << 13 )|
- ( b_start_slice << 12 )|
- ( i == i_count - 1 ? 1 << 11 : 0 )|
- ( i_picture_coding_type << 8 )|
- ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
-
- /* rtp common header */
- rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
- in->i_pts > 0 ? in->i_pts : in->i_dts );
-
- /* MBZ:5 T:1 TR:10 AN:1 N:1 S:1 B:1 E:1 P:3 FBV:1 BFC:3 FFV:1 FFC:3 */
- out->p_buffer[12] = ( h >> 24 )&0xff;
- out->p_buffer[13] = ( h >> 16 )&0xff;
- out->p_buffer[14] = ( h >> 8 )&0xff;
- out->p_buffer[15] = ( h )&0xff;
-
- memcpy( &out->p_buffer[16], p_data, i_payload );
-
- out->i_buffer = 16 + i_payload;
- out->i_dts = in->i_dts + i * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- }
-
- return VLC_SUCCESS;
-}
-
-static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i;
-
- for( i = 0; i < i_count; i++ )
- {
- int i_payload = __MIN( i_max, i_data );
- block_t *out = block_New( p_stream, 14 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
- /* unit count */
- out->p_buffer[12] = 1;
- /* unit header */
- out->p_buffer[13] = 0x00;
- /* data */
- memcpy( &out->p_buffer[14], p_data, i_payload );
-
- out->i_buffer = 14 + i_payload;
- out->i_dts = in->i_dts + i * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- }
-
- return VLC_SUCCESS;
-}
-
-static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 12; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i;
-
- for( i = 0; i < i_count; i++ )
- {
- int i_payload = __MIN( i_max, i_data );
- block_t *out = block_New( p_stream, 12 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
- (in->i_pts > 0 ? in->i_pts : in->i_dts) );
- memcpy( &out->p_buffer[12], p_data, i_payload );
-
- out->i_buffer = 12 + i_payload;
- out->i_dts = in->i_dts + i * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- }
-
- return VLC_SUCCESS;
-}
-
-/* rfc3016 */
-static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 14; /* payload max in one packet */
- int latmhdrsize = in->i_buffer / 0xff + 1;
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer, *p_header = NULL;
- int i_data = in->i_buffer;
- int i;
-
- for( i = 0; i < i_count; i++ )
- {
- int i_payload = __MIN( i_max, i_data );
- block_t *out;
-
- if( i != 0 )
- latmhdrsize = 0;
- out = block_New( p_stream, 12 + latmhdrsize + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
- (in->i_pts > 0 ? in->i_pts : in->i_dts) );
-
- if( i == 0 )
- {
- int tmp = in->i_buffer;
-
- p_header=out->p_buffer+12;
- while( tmp > 0xfe )
- {
- *p_header = 0xff;
- p_header++;
- tmp -= 0xff;
- }
- *p_header = tmp;
- }
-
- memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
-
- out->i_buffer = 12 + latmhdrsize + i_payload;
- out->i_dts = in->i_dts + i * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- }
-
- return VLC_SUCCESS;
-}
-
-static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 12; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i_packet = 0;
-
- while( i_data > 0 )
- {
- int i_payload = (__MIN( i_max, i_data )/4)*4;
- block_t *out = block_New( p_stream, 12 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, 0,
- (in->i_pts > 0 ? in->i_pts : in->i_dts) );
- memcpy( &out->p_buffer[12], p_data, i_payload );
-
- out->i_buffer = 12 + i_payload;
- out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- i_packet++;
- }
-
- return VLC_SUCCESS;
-}
-
-static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 12; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i_packet = 0;
-
- while( i_data > 0 )
- {
- int i_payload = (__MIN( i_max, i_data )/2)*2;
- block_t *out = block_New( p_stream, 12 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, 0,
- (in->i_pts > 0 ? in->i_pts : in->i_dts) );
- memcpy( &out->p_buffer[12], p_data, i_payload );
-
- out->i_buffer = 12 + i_payload;
- out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- i_packet++;
- }
-
- return VLC_SUCCESS;
-}
-
-static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- int i_max = id->i_mtu - 16; /* payload max in one packet */
- int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
-
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i;
-
- for( i = 0; i < i_count; i++ )
- {
- int i_payload = __MIN( i_max, i_data );
- block_t *out = block_New( p_stream, 16 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
- (in->i_pts > 0 ? in->i_pts : in->i_dts) );
- /* AU headers */
- /* AU headers length (bits) */
- out->p_buffer[12] = 0;
- out->p_buffer[13] = 2*8;
- /* for each AU length 13 bits + idx 3bits, */
- out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
- out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
-
- memcpy( &out->p_buffer[16], p_data, i_payload );
-
- out->i_buffer = 16 + i_payload;
- out->i_dts = in->i_dts + i * in->i_length / i_count;
- out->i_length = in->i_length / i_count;
-
- rtp_packetize_send( id, out );
-
- p_data += i_payload;
- i_data -= i_payload;
- }
-
- return VLC_SUCCESS;
-}
-
-
-/* rfc2429 */
-#define RTP_H263_HEADER_SIZE (2) // plen = 0
-#define RTP_H263_PAYLOAD_START (14) // plen = 0
-static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *in )
-{
- uint8_t *p_data = in->p_buffer;
- int i_data = in->i_buffer;
- int i;
- int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
- int i_count;
- int b_p_bit;
- int b_v_bit = 0; // no pesky error resilience
- int i_plen = 0; // normally plen=0 for PSC packet
- int i_pebit = 0; // because plen=0
- uint16_t h;
-
- if( i_data < 2 )
- {
- return VLC_EGENERIC;
- }
- if( p_data[0] || p_data[1] )
- {
- return VLC_EGENERIC;
- }
- /* remove 2 leading 0 bytes */
- p_data += 2;
- i_data -= 2;
- i_count = ( i_data + i_max - 1 ) / i_max;