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/*****************************************************************************
* util.h: Utils for the multicat suite
*****************************************************************************
* Copyright (C) 2009 VideoLAN
* $Id: multicat.h 65 2009-11-15 22:57:53Z massiot $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#define HAVE_CLOCK_NANOSLEEP
#define DEFAULT_PORT 1234
#define DEFAULT_PAYLOAD_SIZE 1316
#define TS_SIZE 188
#define RTP_HEADER_SIZE 12
#define VERB_DBG 3
#define VERB_INFO 2
#define VERB_WARN 1
/*****************************************************************************
* Prototypes
*****************************************************************************/
void msg_Info( void *_unused, const char *psz_format, ... );
void msg_Err( void *_unused, const char *psz_format, ... );
void msg_Warn( void *_unused, const char *psz_format, ... );
void msg_Dbg( void *_unused, const char *psz_format, ... );
void msg_Raw( void *_unused, const char *psz_format, ... );
uint64_t wall_Date( void );
void wall_Sleep( uint64_t i_delay );
int OpenSocket( const char *_psz_arg, int i_ttl, unsigned int *pi_weight );
int OpenFile( const char *psz_arg, bool b_read, bool b_append,
bool *pb_stream );
FILE *OpenAuxFile( const char *psz_arg, bool b_read, bool b_append );
/*****************************************************************************
* Miscellaneous RTP handlers
*****************************************************************************/
/*
* Reminder : RTP header
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|V=2|P|X| CC |M| PT | sequence number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| timestamp |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| synchronization source (SSRC) identifier |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| contributing source (CSRC) identifiers |
| .... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static inline bool rtp_CheckHdr( const uint8_t *p_hdr )
{
return (p_hdr[0] & 0xc0) == 0x80;
}
static inline uint8_t rtp_GetType( const uint8_t *p_hdr )
{
return p_hdr[1] & 0x7f;
}
static inline uint32_t rtp_GetTimestamp( uint8_t *p_hdr )
{
return (p_hdr[4] << 24) | (p_hdr[5] << 16) | (p_hdr[6] << 8) | p_hdr[7];
}
static inline uint8_t *rtp_GetPayload( uint8_t *p_hdr )
{
unsigned int i_size = RTP_HEADER_SIZE;
i_size += 4 * (p_hdr[0] & 0xf);
if ( p_hdr[0] & 0x10 ) /* header extension */
i_size += 4 + (p_hdr[i_size + 2] << 8) + p_hdr[i_size + 3];
return p_hdr + i_size;
}
static inline void rtp_SetTimestamp( uint8_t *p_hdr, uint32_t i_timestamp )
{
p_hdr[4] = (i_timestamp >> 24) & 0xff;
p_hdr[5] = (i_timestamp >> 16) & 0xff;
p_hdr[6] = (i_timestamp >> 8) & 0xff;
p_hdr[7] = i_timestamp & 0xff;
}
static inline void rtp_SetSSRC( uint8_t *p_hdr, const uint8_t pi_ssrc[4] )
{
p_hdr[8] = pi_ssrc[0];
p_hdr[9] = pi_ssrc[1];
p_hdr[10] = pi_ssrc[2];
p_hdr[11] = pi_ssrc[3];
}
static inline void rtp_SetHdr( uint8_t *p_hdr, uint16_t i_rtp_cc )
{
p_hdr[0] = 0x80;
p_hdr[1] = 33; /* assume MPEG-2 ts */
p_hdr[2] = i_rtp_cc >> 8;
p_hdr[3] = i_rtp_cc & 0xff;
}
/*****************************************************************************
* Miscellaneous TS handlers
*****************************************************************************/
static inline bool ts_CheckSync( const uint8_t *p_ts )
{
return p_ts[0] == 0x47;
}
static inline uint16_t ts_GetPID( const uint8_t *p_ts )
{
return (((uint16_t)p_ts[1] & 0x1f) << 8) | p_ts[2];
}
static inline int ts_HasPCR( const uint8_t *p_ts )
{
return ( p_ts[3] & 0x20 ) && /* adaptation field present */
( p_ts[4] >= 7 ) && /* adaptation field size */
( p_ts[5] & 0x10 ); /* has PCR */
}
static inline uint64_t ts_GetPCR( const uint8_t *p_ts )
{
return ( (uint64_t)p_ts[6] << 25 ) |
( (uint64_t)p_ts[7] << 17 ) |
( (uint64_t)p_ts[8] << 9 ) |
( (uint64_t)p_ts[9] << 1 ) |
( (uint64_t)p_ts[10] >> 7 );
}
static inline uint64_t ts_GetPCRExt( const uint8_t *p_ts )
{
return (((uint64_t)p_ts[10] & 1) << 8) | (uint64_t)p_ts[11];
}
static inline void ts_Pad( uint8_t *p_ts )
{
p_ts[0] = 0x47;
p_ts[1] = 0x1f;
p_ts[2] = 0xff;
p_ts[3] = 0x10;
memset( p_ts + 4, 0xff, TS_SIZE - 4 );
};
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