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Commit a606d69a authored by Derk-Jan Hartman's avatar Derk-Jan Hartman
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* Improve the h264 rtp muxing even more. Should now be able to handle multiple... 

* Improve the h264 rtp muxing even more. Should now be able to handle multiple h264 units in one block_t
parent edbb9f04
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Showing with 76 additions and 81 deletions
modules/stream_out/rtp.c
View file @ a606d69a
......@@ -2483,103 +2483,98 @@ static int rtp_packetize_h264( 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;
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;
......
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