* input_clock.c: Clock/System date convertions, stream management
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
- * $Id: input_clock.c,v 1.13 2001/04/29 14:52:42 stef Exp $
+ * $Id: input_clock.c,v 1.20 2001/07/18 14:21:00 massiot Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
#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
mtime_t i_clock, mtime_t i_sysdate )
{
p_pgrm->cr_ref = i_clock;
- p_pgrm->sysdate_ref = i_sysdate;
+ p_pgrm->sysdate_ref = p_pgrm->last_syscr ? p_pgrm->last_syscr : i_sysdate;
}
/*****************************************************************************
void input_ClockInit( pgrm_descriptor_t * p_pgrm )
{
p_pgrm->last_cr = 0;
+ p_pgrm->last_syscr = 0;
p_pgrm->cr_ref = 0;
p_pgrm->sysdate_ref = 0;
p_pgrm->delta_cr = 0;
p_pgrm->c_average_count = 0;
}
+/*****************************************************************************
+ * input_ClockManageControl: handles the messages from the interface
+ *****************************************************************************
+ * Returns UNDEF_S if nothing happened, PAUSE_S if the stream was paused
+ *****************************************************************************/
+int input_ClockManageControl( input_thread_t * p_input,
+ pgrm_descriptor_t * p_pgrm, mtime_t i_clock )
+{
+ int i_return_value = UNDEF_S;
+
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+
+ 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_cond_wait( &p_input->stream.stream_wait,
+ &p_input->stream.stream_lock );
+ ClockNewRef( p_input, p_pgrm, i_clock, mdate() );
+
+ if( p_input->stream.i_new_status == PAUSE_S )
+ {
+ /* PAUSE_S undoes the pause state: Return to old state. */
+ p_input->stream.control.i_status = i_old_status;
+ 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;
+ }
+
+ if( p_input->stream.i_new_status != UNDEF_S )
+ {
+ vlc_mutex_lock( &p_input->stream.control.control_lock );
+
+ p_input->stream.control.i_status = p_input->stream.i_new_status;
+
+ ClockNewRef( p_input, p_pgrm, i_clock,
+ ClockToSysdate( p_input, p_pgrm, i_clock ) );
+
+ if( p_input->stream.control.i_status == PLAYING_S )
+ {
+ p_input->stream.control.i_rate = DEFAULT_RATE;
+ p_input->stream.control.b_mute = 0;
+ }
+ else
+ {
+ p_input->stream.control.i_rate = p_input->stream.i_new_rate;
+ p_input->stream.control.b_mute = 1;
+
+ /* Feed the audio decoders with a NULL packet to avoid
+ * discontinuities. */
+ input_EscapeAudioDiscontinuity( p_input );
+ }
+
+ p_input->stream.i_new_status = UNDEF_S;
+ p_input->stream.i_new_rate = UNDEF_S;
+
+ vlc_mutex_unlock( &p_input->stream.control.control_lock );
+ }
+
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+ return( i_return_value );
+}
+
/*****************************************************************************
* input_ClockManageRef: manages a clock reference
*****************************************************************************/
void input_ClockManageRef( input_thread_t * p_input,
pgrm_descriptor_t * p_pgrm, mtime_t i_clock )
{
- if( p_pgrm->i_synchro_state != SYNCHRO_OK )
+ 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() );
p_pgrm->last_cr = i_clock;
mwait( ClockToSysdate( p_input, p_pgrm, i_clock ) );
}
+ else
+ {
+ p_pgrm->last_cr = 0;
+ p_pgrm->last_syscr = 0;
+ p_pgrm->delta_cr = 0;
+ p_pgrm->c_average_count = 0;
+ }
}
else
{
/* Stream discontinuity, for which we haven't received a
* warning from the stream control facilities (dd-edited
* stream ?). */
- intf_WarnMsg( 3, "Clock gap, unexpected stream discontinuity" );
+ intf_WarnMsg( 1, "Clock gap, unexpected stream discontinuity" );
input_ClockInit( p_pgrm );
p_pgrm->i_synchro_state = SYNCHRO_START;
input_EscapeDiscontinuity( p_input, p_pgrm );
/* Wait a while before delivering the packets to the decoder.
* In case of multiple programs, we arbitrarily follow the
* clock of the first program. */
- mwait( ClockToSysdate( p_input, p_pgrm, i_clock ) );
+ p_pgrm->last_syscr = ClockToSysdate( p_input, p_pgrm, i_clock );
+ mwait( p_pgrm->last_syscr );
/* Now take into account interface changes. */
- vlc_mutex_lock( &p_input->stream.stream_lock );
-
- 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_cond_wait( &p_input->stream.stream_wait,
- &p_input->stream.stream_lock );
- ClockNewRef( p_input, p_pgrm, i_clock, mdate() );
-
- if( p_input->stream.i_new_status == PAUSE_S )
- {
- /* PAUSE_S undoes the pause state: Return to old state. */
- p_input->stream.control.i_status = i_old_status;
- 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 );
- }
-
- if( p_input->stream.i_new_status != UNDEF_S )
- {
- vlc_mutex_lock( &p_input->stream.control.control_lock );
-
- p_input->stream.control.i_status = p_input->stream.i_new_status;
-
- ClockNewRef( p_input, p_pgrm, i_clock,
- ClockToSysdate( p_input, p_pgrm, i_clock ) );
-
- if( p_input->stream.control.i_status == PLAYING_S )
- {
- p_input->stream.control.i_rate = DEFAULT_RATE;
- p_input->stream.control.b_mute = 0;
- }
- else
- {
- p_input->stream.control.i_rate = p_input->stream.i_new_rate;
- p_input->stream.control.b_mute = 1;
-
- /* Feed the audio decoders with a NULL packet to avoid
- * discontinuities. */
- input_EscapeAudioDiscontinuity( p_input, p_pgrm );
- }
-
- p_input->stream.i_new_status = UNDEF_S;
- p_input->stream.i_new_rate = UNDEF_S;
-
- vlc_mutex_unlock( &p_input->stream.control.control_lock );
- }
-
- vlc_mutex_unlock( &p_input->stream.stream_lock );
+ input_ClockManageControl( p_input, p_pgrm, i_clock );
}
else
{
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