mirrors/vlc
0
0
Fork 0
mirror of https://github.com/videolan/vlc.git synced 2025-01-11 02:08:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

* rtp: h263 support (untested).

Browse Source 
Patch by Callan, Wilson <wcallan AT starentnetworks DOT com>
This commit is contained in:
Laurent Aimar 2004-05-28 20:20:50 +00:00
parent ef1c5bcfb2
commit 8077c568b2
1 changed files with 74 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
modules/stream_out/rtp.c
View File

@ -600,6 +600,7 @@ static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * )
static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
{
@ -727,6 +728,13 @@ static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
id->psz_rtpmap = strdup( "ac3/90000" );
id->pf_packetize = rtp_packetize_ac3;
break;
case VLC_FOURCC( 'H', '2', '6', '3' ):
id->i_payload_type = 34; // from live.com MediaSession.cpp
id->i_clock_rate = 90000;
id->psz_rtpmap = strdup( "H263-1998/90000" );
id->pf_packetize = rtp_packetize_h263;
break;
case VLC_FOURCC( 'm', 'p', '4', 'v' ):
{
char hexa[2*p_fmt->i_extra +1];
@ -1774,3 +1782,69 @@ static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
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;
for( i = 0; i < i_count; i++ )
{
int i_payload = __MIN( i_max, i_data );
block_t *out = block_New( p_stream,
RTP_H263_PAYLOAD_START + i_payload );
b_p_bit = (i == 0) ? 1 : 0;
h = ( b_p_bit << 10 )|
( b_v_bit << 9 )|
( i_plen << 3 )|
i_pebit;
/* rtp common header */
//b_m_bit = 1; // always contains end of frame
rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
in->i_pts > 0 ? in->i_pts : in->i_dts );
/* h263 header */
out->p_buffer[12] = ( h >> 8 )&0xff;
out->p_buffer[13] = ( h )&0xff;
memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
out->i_buffer = RTP_H263_PAYLOAD_START + 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;
}