. encore un peu plus de synchro. si �a saccade c'est normal, �a sera

  r�gl� dans l'heure, mais j'ai commit� pour qu'on puisse enfin voir
  des B avec le nouveau d�codeur (qui torchaize)

include/vpar_synchro.h

@@ -46,18 +46,23 @@ typedef struct video_synchro_s
     /* tells whether we accumulated delay */
     mtime_t i_delay;
     /* dates */
-    mtime_t i_last_pts;
+    mtime_t i_last_display_pts;
+    mtime_t i_last_decode_pts;
     mtime_t i_last_i_pts;
     unsigned int i_images_since_pts;
+    /* last pts of non-dropped I image */
+    mtime_t i_last_nondropped_i_pts;
     
     /* il manquait un compteur */
     unsigned int modulo;
 
     /* P images since the last I */
     unsigned int current_p_count;
+    unsigned int nondropped_p_count;
     double p_count_predict;
     /* B images since the last I */
     unsigned int current_b_count;
+    unsigned int nondropped_b_count;
     double b_count_predict;
 
     /* 1 for linear count, 2 for binary count, 3 for ternary count */

src/video_parser/video_parser.c

@@ -245,9 +245,14 @@ static int InitThread( vpar_thread_t *p_vpar )
     /*
      * Initialize the synchro properties
      */
+    p_vpar->synchro.i_last_decode_pts = 0;
+    p_vpar->synchro.i_last_display_pts = 0;
+    p_vpar->synchro.i_images_since_pts = 0;
+    /* for i frames */
     p_vpar->synchro.i_last_i_pts = 0;
-    p_vpar->synchro.theorical_fps = 30;
-    p_vpar->synchro.actual_fps = 25;
+    p_vpar->synchro.theorical_fps = 25;
+    p_vpar->synchro.i_last_nondropped_i_pts = 0;
+    p_vpar->synchro.actual_fps = 20;
     /* the fifo */
     p_vpar->synchro.i_fifo_start = 0;
     p_vpar->synchro.i_fifo_stop = 0;
@@ -259,8 +264,10 @@ static int InitThread( vpar_thread_t *p_vpar )
     p_vpar->synchro.i_delay = 0;
     /* assume there were about 3 P and 6 B images between I's */
     p_vpar->synchro.current_p_count = 1;
+    p_vpar->synchro.nondropped_p_count = 1;
     p_vpar->synchro.p_count_predict = 3;
     p_vpar->synchro.current_b_count = 1;
+    p_vpar->synchro.nondropped_b_count = 1;
     p_vpar->synchro.b_count_predict = 6;
     for( i_dummy = 0; i_dummy < 6; i_dummy++)
     {

src/video_parser/vpar_synchro.c

@@ -60,51 +60,86 @@ float vpar_SynchroUpdateTab( video_synchro_tab_t * tab, int count )
  * vpar_SynchroUpdateStructures : Update the synchro structures
  *****************************************************************************/
 void vpar_SynchroUpdateStructures( vpar_thread_t * p_vpar,
-                                   int i_coding_type )
+                                   int i_coding_type, int dropped )
 {
     float candidate_deviation;
     float optimal_deviation;
     float predict;
     mtime_t i_current_pts;
-    decoder_fifo_t * decoder_fifo;
+    mtime_t i_displaydate;
+    decoder_fifo_t * decoder_fifo = p_vpar->bit_stream.p_decoder_fifo;
 
-    /* interpolate the current PTS */
-    decoder_fifo = p_vpar->bit_stream.p_decoder_fifo;
-    /* see if the current image has a pts - if not, interpolate */
-    if( i_current_pts = decoder_fifo->buffer[decoder_fifo->i_start]->i_pts )
+    /* interpolate the current _decode_ PTS */
+    i_current_pts = decoder_fifo->buffer[decoder_fifo->i_start]->i_pts;
+    if( !i_current_pts )
     {
-        p_vpar->synchro.i_images_since_pts = 1;
+        i_current_pts = p_vpar->synchro.i_last_decode_pts
+                       + 1000000.0 / (1 + p_vpar->synchro.actual_fps);
     }
-    else
+    p_vpar->synchro.i_last_decode_pts = i_current_pts;
+ 
+    /* see if the current image has a pts - if not, set to 0 */
+    p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_stop].i_pts
+	    = i_current_pts;
+
+    /* update display time */
+    i_displaydate = decoder_fifo->buffer[decoder_fifo->i_start]->i_pts;
+    if( !i_displaydate || i_coding_type != I_CODING_TYPE )
     {
-        i_current_pts = p_vpar->synchro.i_last_pts
-                        + (1000000 / p_vpar->synchro.theorical_fps);
-        p_vpar->synchro.i_images_since_pts++;
+        if (!p_vpar->synchro.i_images_since_pts )
+            p_vpar->synchro.i_images_since_pts = 10;
+
+        i_displaydate = p_vpar->synchro.i_last_display_pts
+                       + 1000000.0 / (p_vpar->synchro.theorical_fps);
+        //fprintf (stderr, "  ");
     }
-    p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_stop].i_pts = i_current_pts;
-    p_vpar->synchro.i_last_pts = i_current_pts;
+    //else fprintf (stderr, "R ");
+    //if (dropped) fprintf (stderr, "  "); else fprintf (stderr, "* ");
+    //fprintf (stderr, "%i ", i_coding_type);
+    //fprintf (stderr, "pts %lli delta %lli\n", i_displaydate, i_displaydate - p_vpar->synchro.i_last_display_pts);
+
+    p_vpar->synchro.i_images_since_pts--;
+    p_vpar->synchro.i_last_display_pts = i_displaydate;
+
+
 
-	
     /* update structures */
     switch(i_coding_type)
     {
         case P_CODING_TYPE:
 
             p_vpar->synchro.current_p_count++;
+            if( !dropped ) p_vpar->synchro.nondropped_p_count++;
             break;
 
         case B_CODING_TYPE:
             p_vpar->synchro.current_b_count++;
+            if( !dropped ) p_vpar->synchro.nondropped_b_count++;
             break;
 
         case I_CODING_TYPE:
 
             /* update information about images we can decode */
-	    if ( p_vpar->synchro.i_last_i_pts )
+	    if (i_current_pts != p_vpar->synchro.i_last_i_pts)
             {
-                p_vpar->synchro.theorical_fps = 1000000 * (1 + p_vpar->synchro.current_b_count + p_vpar->synchro.current_p_count) / (i_current_pts - p_vpar->synchro.i_last_i_pts);
-	    }
-            p_vpar->synchro.i_last_i_pts = i_current_pts;
+                if ( p_vpar->synchro.i_last_i_pts && i_current_pts != p_vpar->synchro.i_last_i_pts)
+                {
+                    p_vpar->synchro.theorical_fps = (p_vpar->synchro.theorical_fps + 1000000.0 * (1 + p_vpar->synchro.current_b_count + p_vpar->synchro.current_p_count) / (i_current_pts - p_vpar->synchro.i_last_i_pts)) / 2;
+                }
+                p_vpar->synchro.i_last_i_pts = i_current_pts;
+            }
+
+            if( !dropped )
+            {
+                if ( p_vpar->synchro.i_last_nondropped_i_pts && i_current_pts != p_vpar->synchro.i_last_nondropped_i_pts)
+                {
+                    p_vpar->synchro.actual_fps = (p_vpar->synchro.actual_fps + 1000000.0 * (1 + p_vpar->synchro.nondropped_b_count + p_vpar->synchro.nondropped_p_count) / (i_current_pts - p_vpar->synchro.i_last_nondropped_i_pts)) / 2;
+                }
+    
+                p_vpar->synchro.i_last_nondropped_i_pts = i_current_pts;
+                p_vpar->synchro.nondropped_p_count = 0;
+                p_vpar->synchro.nondropped_b_count = 0;
+            }
 
 
             /* update all the structures for P images */
@@ -183,31 +218,41 @@ void vpar_SynchroUpdateStructures( vpar_thread_t * p_vpar,
 boolean_t vpar_SynchroChoose( vpar_thread_t * p_vpar, int i_coding_type,
                               int i_structure )
 {
-    mtime_t i_delay =
-        p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_start].i_pts - mdate();
+    mtime_t i_delay;
+    int keep;
+
+    i_delay = p_vpar->synchro.i_last_decode_pts - mdate();
+
+    //fprintf( stderr, "delay is %lli - ", i_delay);
     
-    if ( i_coding_type == B_CODING_TYPE )
-        return (0);
+#if 1
+    /*if ( i_coding_type == B_CODING_TYPE )
+        return (0);*/
 
-    if( i_delay > 300000 )
+    //return( i_coding_type == I_CODING_TYPE || i_coding_type == P_CODING_TYPE );
+    if( i_delay > 120000 )
     {	    
-        return (1);
+        keep = 1;
     }
-    else if( i_delay > 150000 )
+    else if( i_delay > 100000 )
     {
-        return ( i_coding_type == I_CODING_TYPE
+        keep = ( i_coding_type == I_CODING_TYPE
                     || i_coding_type == P_CODING_TYPE );
     }
-    else if( i_delay > 100000 )
+    else if( i_delay > 50000 )
     {	    
-        return ( i_coding_type == I_CODING_TYPE );
+        keep = ( i_coding_type == I_CODING_TYPE );
     }
     else
     {	    
-        //fprintf( stderr, "chooser : we are  la bourre - trashing a %i\n", i_coding_type);
-        //return ( i_coding_type == I_CODING_TYPE );
-        return (0);
+        keep = 0;
     }
+#endif
+
+    //if (!keep) fprintf( stderr, "trashing a type %i with delay %lli\n", i_coding_type, i_delay);
+//    else fprintf( stderr, "chooser :               ok - displaying a %i \n", i_coding_type);
+
+    return (keep);
 
 }
 
@@ -217,7 +262,7 @@ boolean_t vpar_SynchroChoose( vpar_thread_t * p_vpar, int i_coding_type,
 void vpar_SynchroTrash( vpar_thread_t * p_vpar, int i_coding_type,
                         int i_structure )
 {
-    vpar_SynchroUpdateStructures (p_vpar, i_coding_type);
+    vpar_SynchroUpdateStructures (p_vpar, i_coding_type, 1);
 
 }
 
@@ -227,11 +272,12 @@ void vpar_SynchroTrash( vpar_thread_t * p_vpar, int i_coding_type,
 void vpar_SynchroDecode( vpar_thread_t * p_vpar, int i_coding_type,
                             int i_structure )
 {
-    vpar_SynchroUpdateStructures (p_vpar, i_coding_type);
+    vpar_SynchroUpdateStructures (p_vpar, i_coding_type, 0);
 
     p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_stop].i_decode_date = mdate();
     p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_stop].i_image_type
         = i_coding_type;
+
     p_vpar->synchro.i_fifo_stop = (p_vpar->synchro.i_fifo_stop + 1) & 0xf;
 
 }
@@ -248,9 +294,12 @@ void vpar_SynchroEnd( vpar_thread_t * p_vpar )
         / (p_vpar->synchro.i_fifo_stop - p_vpar->synchro.i_fifo_start & 0x0f);
 
     p_vpar->synchro.i_mean_decode_time =
-        ( 3 * p_vpar->synchro.i_mean_decode_time + i_decode_time ) / 4;
+        ( 7 * p_vpar->synchro.i_mean_decode_time + i_decode_time ) / 8;
+
+    //fprintf (stderr, "decoding time is %lli\n", p_vpar->synchro.i_mean_decode_time);
 
     p_vpar->synchro.i_fifo_start = (p_vpar->synchro.i_fifo_start + 1) & 0xf;
+
 }
 
 /*****************************************************************************
@@ -258,15 +307,13 @@ void vpar_SynchroEnd( vpar_thread_t * p_vpar )
  *****************************************************************************/
 mtime_t vpar_SynchroDate( vpar_thread_t * p_vpar )
 {
-    mtime_t i_displaydate;
+    mtime_t i_displaydate = p_vpar->synchro.i_last_display_pts;
     static mtime_t i_delta = 0;
-
-    i_displaydate =
-        p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_start].i_pts;
     
     //fprintf(stderr, "displaying type %i with delay %lli and delta %lli\n", p_vpar->synchro.fifo[p_vpar->synchro.i_fifo_start].i_image_type, i_displaydate - mdate(), i_displaydate - i_delta);
-    i_delta = i_displaydate;
+    //fprintf (stderr, "theorical fps: %f - actual fps: %f \n", p_vpar->synchro.theorical_fps, p_vpar->synchro.actual_fps);
 
+    i_delta = i_displaydate;
     return i_displaydate;
 }