* vpar_synchro.c : frame dropping routines
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
- * $Id: vpar_synchro.c,v 1.64 2000/12/26 19:14:47 massiot Exp $
+ * $Id: vpar_synchro.c,v 1.65 2000/12/27 18:09:02 massiot Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Samuel Hocevar <sam@via.ecp.fr>
* Local prototypes
*/
static int SynchroType( void );
-static void SynchroNewPicture( vpar_thread_t * p_vpar, int i_coding_type );
/* Error margins */
#define DELTA (int)(0.040*CLOCK_FREQ)
switch( i_coding_type )
{
case I_CODING_TYPE:
- /* Stream structure changes */
- if( S.i_eta_p )
- S.i_n_p = S.i_eta_p;
-
if( S.backward_pts )
{
pts = S.backward_pts;
break;
case P_CODING_TYPE:
- /* Stream structure changes */
- if( S.i_eta_b )
- S.i_n_b = S.i_eta_b;
- if( S.i_eta_p + 1 > S.i_n_p )
- S.i_n_p = S.i_eta_p + 1;
-
if( S.backward_pts )
{
pts = S.backward_pts;
}
else
{
- pts = S.current_pts + period * (S.i_n_b + 2);
+ pts = S.current_pts + period * (S.i_n_b + 1);
}
if( (1 + S.i_n_p * (S.i_n_b + 1)) * period >
/* next I */
b_decode &= (pts - now
+ period
- * ( (S.i_n_p - S.i_eta_p - 1) * (1 + S.i_n_b) - 1 ))
+ * ( (S.i_n_p - S.i_eta_p) * (1 + S.i_n_b) - 1 ))
> (TAU_PRIME(P_CODING_TYPE)
+ TAU_PRIME(I_CODING_TYPE) + DELTA);
}
break;
case B_CODING_TYPE:
- /* Stream structure changes */
- if( S.i_eta_b + 1 > S.i_n_b )
- S.i_n_b = S.i_eta_b + 1;
-
- pts = S.current_pts + period;
+ pts = S.current_pts;
if( (S.i_n_b + 1) * period > S.p_tau[P_CODING_TYPE] )
{
- b_decode = (pts - now) > (TAU_PRIME(B_CODING_TYPE) + DELTA);
-
- /* Remember that S.i_eta_b is for the moment only eta_b - 1. */
- b_decode &= (pts - now
- + period
- * ( 2 * S.i_n_b - S.i_eta_b + 2))
- > (TAU_PRIME(B_CODING_TYPE)
- + TAU_PRIME(P_CODING_TYPE) + DELTA);
+ if( period > S.p_tau[B_CODING_TYPE] )
+ {
+ /* Security in case we're _really_ late */
+ b_decode = (pts - now > 0);
+ }
+ else
+ {
+ b_decode = (pts - now) > (TAU_PRIME(B_CODING_TYPE) + DELTA);
+
+ /* next P or I */
+ b_decode &= (pts - now
+ + period
+ * ( 2 * S.i_n_b - S.i_eta_b + 3))
+ > (TAU_PRIME(B_CODING_TYPE)
+ + TAU_PRIME(P_CODING_TYPE) + DELTA);
+ }
}
else
{
(i_coding_type == P_CODING_TYPE ? "P" : "I"),
mstrtime(p_date, pts), b_decode ? "decoding" : "trashed",
S.p_tau[i_coding_type]);
+#endif
+#ifdef STATS
+ if( !b_decode )
+ {
+ S.i_not_chosen_pic++;
+ }
#endif
return( b_decode );
#undef S
}
/*****************************************************************************
- * vpar_SynchroTrash : Update timers when we trash a picture
+ * vpar_SynchroTrash : Update counters when we trash a picture
*****************************************************************************/
void vpar_SynchroTrash( vpar_thread_t * p_vpar, int i_coding_type,
int i_structure )
{
- SynchroNewPicture( p_vpar, i_coding_type );
#ifdef STATS
p_vpar->synchro.i_trashed_pic++;
#endif
intf_ErrMsg("vpar error: synchro fifo full, estimations will be biased");
}
vlc_mutex_unlock( &p_vpar->synchro.fifo_lock );
-
- SynchroNewPicture( p_vpar, i_coding_type );
}
/*****************************************************************************
}
/*****************************************************************************
- * SynchroType: Get the user's synchro type
- *****************************************************************************
- * This function is called at initialization.
+ * vpar_SynchroNewPicture: Update stream structure and PTS
*****************************************************************************/
-static int SynchroType( void )
-{
- char * psz_synchro = main_GetPszVariable( VPAR_SYNCHRO_VAR, NULL );
-
- if( psz_synchro == NULL )
- {
- return VPAR_SYNCHRO_DEFAULT;
- }
-
- switch( *psz_synchro++ )
- {
- case 'i':
- case 'I':
- switch( *psz_synchro++ )
- {
- case '\0':
- return VPAR_SYNCHRO_I;
-
- case '+':
- if( *psz_synchro ) return 0;
- return VPAR_SYNCHRO_Iplus;
-
- case 'p':
- case 'P':
- switch( *psz_synchro++ )
- {
- case '\0':
- return VPAR_SYNCHRO_IP;
-
- case '+':
- if( *psz_synchro ) return 0;
- return VPAR_SYNCHRO_IPplus;
-
- case 'b':
- case 'B':
- if( *psz_synchro ) return 0;
- return VPAR_SYNCHRO_IPB;
-
- default:
- return VPAR_SYNCHRO_DEFAULT;
-
- }
-
- default:
- return VPAR_SYNCHRO_DEFAULT;
- }
- }
-
- return VPAR_SYNCHRO_DEFAULT;
-}
-
-/*****************************************************************************
- * SynchroNewPicture: Update stream structure and PTS
- *****************************************************************************/
-static void SynchroNewPicture( vpar_thread_t * p_vpar, int i_coding_type )
+void vpar_SynchroNewPicture( vpar_thread_t * p_vpar, int i_coding_type )
{
+ /* FIXME: use decoder_fifo callback */
pes_packet_t * p_pes;
switch( i_coding_type )
{
case I_CODING_TYPE:
p_vpar->synchro.i_eta_p = p_vpar->synchro.i_eta_b = 0;
- if( p_vpar->synchro.i_eta_p )
+ if( p_vpar->synchro.i_eta_p
+ && p_vpar->synchro.i_eta_p != p_vpar->synchro.i_n_p )
+ {
+ intf_WarnMsg( 1, "Stream periodicity changed from P[%d] to P[%d]",
+ p_vpar->synchro.i_n_p, p_vpar->synchro.i_eta_p );
p_vpar->synchro.i_n_p = p_vpar->synchro.i_eta_p;
+ }
#ifdef STATS
if( p_vpar->synchro.i_type == VPAR_SYNCHRO_DEFAULT )
{
- intf_Msg( "vpar synchro stats: I(%lld) P(%lld)[%d] B(%lld)[%d] YUV(%lld) : %d/%d",
+ intf_Msg( "vpar synchro stats: I(%lld) P(%lld)[%d] B(%lld)[%d] YUV(%lld) : trashed %d:%d/%d",
p_vpar->synchro.p_tau[I_CODING_TYPE],
p_vpar->synchro.p_tau[P_CODING_TYPE],
p_vpar->synchro.i_n_p,
p_vpar->synchro.p_tau[B_CODING_TYPE],
p_vpar->synchro.i_n_b,
p_vpar->p_vout->render_time,
- p_vpar->synchro.i_pic -
- p_vpar->synchro.i_trashed_pic,
+ p_vpar->synchro.i_not_chosen_pic,
+ p_vpar->synchro.i_trashed_pic -
+ p_vpar->synchro.i_not_chosen_pic,
p_vpar->synchro.i_pic );
- p_vpar->synchro.i_trashed_pic = 0;
- p_vpar->synchro.i_pic = 0;
+ p_vpar->synchro.i_trashed_pic = p_vpar->synchro.i_not_chosen_pic
+ = p_vpar->synchro.i_pic = 0;
}
#endif
break;
case P_CODING_TYPE:
p_vpar->synchro.i_eta_p++;
- if( p_vpar->synchro.i_eta_b )
+ if( p_vpar->synchro.i_eta_b
+ && p_vpar->synchro.i_eta_b != p_vpar->synchro.i_n_b )
+ {
+ intf_WarnMsg( 1, "Stream periodicity changed from B[%d] to B[%d]",
+ p_vpar->synchro.i_n_b, p_vpar->synchro.i_eta_b );
p_vpar->synchro.i_n_b = p_vpar->synchro.i_eta_b;
+ }
p_vpar->synchro.i_eta_b = 0;
break;
case B_CODING_TYPE:
p_vpar->synchro.i_pic++;
#endif
}
+
+/*****************************************************************************
+ * SynchroType: Get the user's synchro type
+ *****************************************************************************
+ * This function is called at initialization.
+ *****************************************************************************/
+static int SynchroType( void )
+{
+ char * psz_synchro = main_GetPszVariable( VPAR_SYNCHRO_VAR, NULL );
+
+ if( psz_synchro == NULL )
+ {
+ return VPAR_SYNCHRO_DEFAULT;
+ }
+
+ switch( *psz_synchro++ )
+ {
+ case 'i':
+ case 'I':
+ switch( *psz_synchro++ )
+ {
+ case '\0':
+ return VPAR_SYNCHRO_I;
+
+ case '+':
+ if( *psz_synchro ) return 0;
+ return VPAR_SYNCHRO_Iplus;
+
+ case 'p':
+ case 'P':
+ switch( *psz_synchro++ )
+ {
+ case '\0':
+ return VPAR_SYNCHRO_IP;
+
+ case '+':
+ if( *psz_synchro ) return 0;
+ return VPAR_SYNCHRO_IPplus;
+
+ case 'b':
+ case 'B':
+ if( *psz_synchro ) return 0;
+ return VPAR_SYNCHRO_IPB;
+
+ default:
+ return VPAR_SYNCHRO_DEFAULT;
+
+ }
+
+ default:
+ return VPAR_SYNCHRO_DEFAULT;
+ }
+ }
+
+ return VPAR_SYNCHRO_DEFAULT;
+}
+