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;
block_t *out;
int i_nal_type;
int i_payload;
- while( i_data > 5 &&
- ( p_data[0] != 0x00 || p_data[1] != 0x00 || p_data[2] != 0x01 || /* startcode */
- (p_data[3]&0x1f) < 1 || (p_data[3]&0x1f) > 23 ) ) /* naltype should be between 1 and 23 */
- {
- p_data++;
- i_data--;
- }
-
- if( i_data < 5 )
- return VLC_SUCCESS;
-
- p_data+=3;
- i_data-=3;
- i_nal_type = p_data[0]&0x1f;
-
- /* Skip global headers */
- if( i_nal_type == 7 || i_nal_type == 8 )
- return VLC_SUCCESS;
-
- if( i_data <= i_max ) /* The whole pack will fit in one rtp payload */
+ while( i_data > 4 )
{
- /* single NAL */
- i_payload = __MIN( i_max, i_data );
- out = block_New( p_stream, 12 + i_payload );
-
- /* rtp common header */
- rtp_packetize_common( id, out, 1,
- 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;
- out->i_length = in->i_length;
-
- rtp_packetize_send( id, out );
-
- /*msg_Dbg( p_stream, "nal-out plain %d %02x", i_payload, out->p_buffer[16] );*/
- }
- else
- {
- /* FU-A */
- uint8_t nalh; /* The nalheader byte */
- int i=0, start=1, end=0, first=0;
-
- nalh = *p_data;
- p_data++;
- i_data--;
-
- i_max = id->i_mtu - 14;
- i_count = ( i_data + i_max - 1 ) / i_max;
-
- /*msg_Dbg( p_stream, "nal-out fragmented %02x %d", nalh, i_rest);*/
-
- while( end == 0 )
+ if( p_data[0] == 0x00 && p_data[1] == 0x00 && p_data[2] == 0x01 && /* startcode */
+ (p_data[3]&0x1f) > 0 && (p_data[3]&0x1f) < 24 ) /* naltype should be between 1 and 23 */
{
- i_payload = __MIN( i_max, i_data );
- out = block_New( p_stream, 14 + i_payload );
+ p_data += 3;
+ i_data -= 3;
+ i_nal_type = p_data[0]&0x1f;
+
+ /* Skip global headers */
+ if( i_nal_type == 7 || i_nal_type == 8 )
+ continue;
+
+ if( i_data <= i_max ) /* The whole pack will fit in one rtp payload */
+ {
+ /* single NAL */
+ i_payload = __MIN( i_max, i_data );
+ out = block_New( p_stream, 12 + i_payload );
- if( i_data == i_payload )
- end = 1;
+ /* rtp common header */
+ rtp_packetize_common( id, out, 1,
+ in->i_pts > 0 ? in->i_pts : in->i_dts );
- /* rtp common header */
- rtp_packetize_common( id, out, (end)?1:0,
- in->i_pts > 0 ? in->i_pts : in->i_dts );
+ memcpy( &out->p_buffer[12], p_data, i_payload );
- /* FU indicator */
- out->p_buffer[12] = (nalh&0x60)|28;
- /* FU header */
- out->p_buffer[13] = (start<<7)|(end<<6)|(nalh&0x1f);
+ out->i_buffer+= i_payload;
+ out->i_dts = in->i_dts;
+ out->i_length = in->i_length;
- memcpy( &out->p_buffer[14], p_data+first, i_payload );
-
- out->i_buffer = 14 + i_payload;
+ rtp_packetize_send( id, out );
+ p_data += i_payload;
+ i_data -= i_payload;
+ /*msg_Dbg( p_stream, "nal-out plain %d %02x", i_payload, out->p_buffer[16] );*/
+ }
+ else
+ {
+ /* FU-A */
+ uint8_t nalh; /* The nalheader byte */
+ int start=1, end=0;
+
+ /* skip but remember the nalh byte */
+ nalh = *p_data;
+ p_data++;
+ i_data--;
- // not sure what of these should be used and what it does :)
- out->i_pts = in->i_pts;
- out->i_dts = in->i_dts;
- //out->i_dts = in->i_dts + i * in->i_length / i_count;
- //out->i_length = in->i_length / i_count;
+ i_max = id->i_mtu - 14;
- rtp_packetize_send( id, out );
+ /*msg_Dbg( p_stream, "nal-out fragmented %02x %d", nalh, i_rest);*/
- /*msg_Dbg( p_stream, "nal-out fragmented: frag %d %d %02x %02x %d", start,end,
- out->p_buffer[12], out->p_buffer[13], i_payload );*/
+ while( end == 0 )
+ {
+ i_payload = __MIN( i_max, i_data );
+ out = block_New( p_stream, 14 + i_payload );
+
+ if( i_data == i_payload )
+ end = 1;
+
+ /* rtp common header */
+ rtp_packetize_common( id, out, (end)?1:0,
+ in->i_pts > 0 ? in->i_pts : in->i_dts );
+
+ /* FU indicator */
+ out->p_buffer[12] = (nalh&0x60)|28;
+ /* FU header */
+ out->p_buffer[13] = (start<<7)|(end<<6)|(nalh&0x1f);
+
+ memcpy( &out->p_buffer[14], p_data, i_payload );
+
+ out->i_buffer = 14 + i_payload;
+ /* The dts should "slide" ? See the i_count trick and adapt */
+ out->i_dts = in->i_dts;
+
+ rtp_packetize_send( id, out );
+ /*msg_Dbg( p_stream, "nal-out fragmented: frag %d %d %02x %02x %d", start,end,
+ out->p_buffer[12], out->p_buffer[13], i_payload );*/
- i_data -= i_payload;
- first += i_payload;
- i++;
- start=0;
+ i_data -= i_payload;
+ p_data +- i_payload;
+ start = 0;
+ }
+ }
+ }
+ else
+ {
+ p_data++;
+ i_data--;
}
}
return VLC_SUCCESS;