/*****************************************************************************
* input_clock.c: Clock/System date convertions, stream management
*****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
- * $Id: input_clock.c,v 1.18 2001/06/27 09:53:57 massiot Exp $
+ * Copyright (C) 1999-2001 VideoLAN
+ * $Id: input_clock.c,v 1.36 2002/12/12 15:10:58 gbazin Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include "defs.h"
-
#include <string.h> /* memcpy(), memset() */
-#include <sys/types.h> /* off_t */
-#include "config.h"
-#include "common.h"
-#include "threads.h"
-#include "mtime.h"
-#include "intf_msg.h"
+#include <vlc/vlc.h>
#include "stream_control.h"
#include "input_ext-intf.h"
#include "input_ext-dec.h"
-
-#include "input.h"
+#include "input_ext-plugins.h"
/*
* DISCUSSION : SYNCHRONIZATION METHOD
{
i_sysdate = (mtime_t)(i_clock - p_pgrm->cr_ref)
* (mtime_t)p_input->stream.control.i_rate
- * (mtime_t)300
- / (mtime_t)27
- / (mtime_t)DEFAULT_RATE
- + (mtime_t)p_pgrm->sysdate_ref;
+ * (mtime_t)300;
+ i_sysdate /= 27;
+ i_sysdate /= 1000;
+ i_sysdate += (mtime_t)p_pgrm->sysdate_ref;
}
return( i_sysdate );
/*****************************************************************************
* ClockNewRef: writes a new clock reference
*****************************************************************************/
-static void ClockNewRef( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm,
+static void ClockNewRef( pgrm_descriptor_t * p_pgrm,
mtime_t i_clock, mtime_t i_sysdate )
{
p_pgrm->cr_ref = i_clock;
- p_pgrm->sysdate_ref = p_pgrm->last_syscr ? p_pgrm->last_syscr : i_sysdate;
+ /* this is actually a kludge, but it gives better results when scr
+ * is zero in DVDs: we are 3-4 ms in advance instead of sometimes
+ * 100ms late */
+ p_pgrm->sysdate_ref = ( p_pgrm->last_syscr && !i_clock )
+ ? p_pgrm->last_syscr
+ : i_sysdate ;
}
/*****************************************************************************
if( p_input->stream.i_new_status == PAUSE_S )
{
int i_old_status;
+
vlc_mutex_lock( &p_input->stream.control.control_lock );
i_old_status = p_input->stream.control.i_status;
-
p_input->stream.control.i_status = PAUSE_S;
+ vlc_mutex_unlock( &p_input->stream.control.control_lock );
+
vlc_cond_wait( &p_input->stream.stream_wait,
&p_input->stream.stream_lock );
- ClockNewRef( p_input, p_pgrm, i_clock, mdate() );
+ p_pgrm->last_syscr = 0;
+ ClockNewRef( p_pgrm, i_clock, mdate() );
if( p_input->stream.i_new_status == PAUSE_S )
- {
+ {
/* PAUSE_S undoes the pause state: Return to old state. */
+ vlc_mutex_lock( &p_input->stream.control.control_lock );
p_input->stream.control.i_status = i_old_status;
+ vlc_mutex_unlock( &p_input->stream.control.control_lock );
+
p_input->stream.i_new_status = UNDEF_S;
p_input->stream.i_new_rate = UNDEF_S;
}
/* We handle i_new_status != PAUSE_S below... */
- vlc_mutex_unlock( &p_input->stream.control.control_lock );
i_return_value = PAUSE_S;
}
p_input->stream.control.i_status = p_input->stream.i_new_status;
- ClockNewRef( p_input, p_pgrm, i_clock,
+ ClockNewRef( p_pgrm, i_clock,
ClockToSysdate( p_input, p_pgrm, i_clock ) );
if( p_input->stream.control.i_status == PLAYING_S )
/* Feed the audio decoders with a NULL packet to avoid
* discontinuities. */
- input_EscapeAudioDiscontinuity( p_input, p_pgrm );
+ input_EscapeAudioDiscontinuity( p_input );
}
p_input->stream.i_new_status = UNDEF_S;
void input_ClockManageRef( input_thread_t * p_input,
pgrm_descriptor_t * p_pgrm, mtime_t i_clock )
{
+ /* take selected program if none specified */
+ if( !p_pgrm )
+ {
+ p_pgrm = p_input->stream.p_selected_program;
+ }
+
if( ( p_pgrm->i_synchro_state != SYNCHRO_OK ) || ( i_clock == 0 ) )
{
/* Feed synchro with a new reference point. */
- ClockNewRef( p_input, p_pgrm, i_clock, mdate() );
+ ClockNewRef( p_pgrm, i_clock, mdate() );
p_pgrm->i_synchro_state = SYNCHRO_OK;
if( p_input->stream.b_pace_control
- && p_input->stream.pp_programs[0] == p_pgrm )
+ && p_input->stream.p_selected_program == p_pgrm )
{
p_pgrm->last_cr = i_clock;
mwait( ClockToSysdate( p_input, p_pgrm, i_clock ) );
/* Stream discontinuity, for which we haven't received a
* warning from the stream control facilities (dd-edited
* stream ?). */
- intf_WarnMsg( 1, "Clock gap, unexpected stream discontinuity" );
+ msg_Warn( p_input, "clock gap, unexpected stream discontinuity" );
input_ClockInit( p_pgrm );
p_pgrm->i_synchro_state = SYNCHRO_START;
- input_EscapeDiscontinuity( p_input, p_pgrm );
+ input_EscapeDiscontinuity( p_input );
}
p_pgrm->last_cr = i_clock;
if( p_input->stream.b_pace_control
- && p_input->stream.pp_programs[0] == p_pgrm )
+ && p_input->stream.p_selected_program == p_pgrm )
{
+ /* We remember the last system date to be able to restart
+ * the synchro we statistically better continuity, after
+ * a zero scr */
+ p_pgrm->last_syscr = ClockToSysdate( p_input, p_pgrm, i_clock );
+
/* Wait a while before delivering the packets to the decoder.
* In case of multiple programs, we arbitrarily follow the
* clock of the first program. */
- p_pgrm->last_syscr = ClockToSysdate( p_input, p_pgrm, i_clock );
mwait( p_pgrm->last_syscr );
/* Now take into account interface changes. */
mtime_t input_ClockGetTS( input_thread_t * p_input,
pgrm_descriptor_t * p_pgrm, mtime_t i_ts )
{
+ /* take selected program if none specified */
+ if( !p_pgrm )
+ {
+ p_pgrm = p_input->stream.p_selected_program;
+ }
+
if( p_pgrm->i_synchro_state == SYNCHRO_OK )
{
return( ClockToSysdate( p_input, p_pgrm, i_ts + p_pgrm->delta_cr )
- + DEFAULT_PTS_DELAY );
+ + p_input->i_pts_delay
+ + (p_input->p_vlc->i_desync > 0
+ ? p_input->p_vlc->i_desync : 0) );
}
else
{