* modules/access/fake.c: New --fake-duration option ; useful to do a

   slide-show.

modules/access/fake.c

@@ -48,7 +48,10 @@ static void Close( vlc_object_t * );
 #define ID_LONGTEXT N_( \
     "Allows you to set the ID of the fake elementary stream for use in " \
     "#duplicate{} constructs (default 0).")
-
+#define DURATION_TEXT N_("Duration in ms")
+#define DURATION_LONGTEXT N_( \
+    "Specifies the duration of the fake streaming before faking an " \
+    "end-of-file (default 0 means the stream is unlimited).")
 
 vlc_module_begin();
     set_shortname( _("Fake") );
@@ -60,6 +63,8 @@ vlc_module_begin();
                  CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
     add_float( "fake-fps", 25.0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
     add_integer( "fake-id", 0, NULL, ID_TEXT, ID_LONGTEXT, VLC_TRUE );
+    add_integer( "fake-duration", 0, NULL, DURATION_TEXT, DURATION_LONGTEXT,
+                 VLC_TRUE );
 
     add_shortcut( "fake" );
     set_capability( "access_demux", 0 );
@@ -75,7 +80,7 @@ static int Control( demux_t *, int, va_list );
 struct demux_sys_t
 {
     float f_fps;
-    mtime_t i_last_pts;    /* only used when f_fps > 0 */
+    mtime_t i_last_pts, i_duration, i_first_pts, i_end_pts, i_pause_pts;
 
     es_out_id_t  *p_es_video;
 };
@@ -103,15 +108,18 @@ static int Open( vlc_object_t *p_this )
     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
     memset( p_sys, 0, sizeof( demux_sys_t ) );
 
+    var_Create( p_demux, "fake-duration", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+    var_Get( p_demux, "fake-duration", &val );
+    p_sys->i_duration = val.i_int * 1000;
+
     var_Create( p_demux, "fake-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
     var_Get( p_demux, "fake-fps", &val );
     p_sys->f_fps = val.f_float;
-    p_sys->i_last_pts = 0;
 
-    /* Declare elementary stream */
+    /* Declare the elementary stream */
+    es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC('f','a','k','e') );
     var_Create( p_demux, "fake-id", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
     var_Get( p_demux, "fake-id", &val );
-    es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC('f', 'a', 'k', 'e') );
     fmt.i_id = val.i_int;
     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 
@@ -138,27 +146,78 @@ static void Close( vlc_object_t *p_this )
 static int Control( demux_t *p_demux, int i_query, va_list args )
 {
     demux_sys_t *p_sys = p_demux->p_sys;
-    vlc_bool_t *pb;
-    int64_t    *pi64;
+    vlc_bool_t *pb, b;
+    int64_t    *pi64, i64;
+    double     *pf, f;
 
     switch( i_query )
     {
         /* Special for access_demux */
         case DEMUX_CAN_PAUSE:
-        case DEMUX_SET_PAUSE_STATE:
         case DEMUX_CAN_CONTROL_PACE:
-            pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
-            *pb = VLC_FALSE;
+            pb = (vlc_bool_t *)va_arg( args, vlc_bool_t * );
+            *pb = VLC_TRUE;
+            return VLC_SUCCESS;
+
+        case DEMUX_SET_PAUSE_STATE:
+            b = (vlc_bool_t)va_arg( args, vlc_bool_t );
+            if ( b )
+            {
+                p_sys->i_pause_pts = mdate();
+            }
+            else if ( p_sys->i_pause_pts )
+            {
+                mtime_t i_pause_duration = mdate() - p_sys->i_pause_pts;
+                p_sys->i_first_pts += i_pause_duration;
+                p_sys->i_last_pts += i_pause_duration;
+                if ( p_sys->i_duration )
+                    p_sys->i_end_pts += i_pause_duration;
+                p_sys->i_pause_pts = 0;
+            }
             return VLC_SUCCESS;
 
         case DEMUX_GET_PTS_DELAY:
-            pi64 = (int64_t*)va_arg( args, int64_t * );
+            pi64 = (int64_t *)va_arg( args, int64_t * );
             *pi64 = (int64_t)var_GetInteger( p_demux, "fake-caching" ) * 1000;
             return VLC_SUCCESS;
 
+        case DEMUX_GET_POSITION:
+            pf = (double*)va_arg( args, double* );
+            if( p_sys->i_duration > 0 )
+            {
+                *pf = (double)( p_sys->i_last_pts - p_sys->i_first_pts )
+                                / (double)(p_sys->i_duration);
+            }
+            else
+            {
+                *pf = 0;
+            }
+            return VLC_SUCCESS;
+
+        case DEMUX_SET_POSITION:
+            f = (double)va_arg( args, double );
+            i64 = f * (double)p_sys->i_duration;
+            p_sys->i_first_pts = p_sys->i_last_pts - i64;
+            p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
+            return VLC_SUCCESS;
+
         case DEMUX_GET_TIME:
+            pi64 = (int64_t *)va_arg( args, int64_t * );
+            if ( p_sys->i_duration )
+                *pi64 = p_sys->i_last_pts - p_sys->i_first_pts;
+            else
+                *pi64 = p_sys->i_last_pts;
+            return VLC_SUCCESS;
+
+        case DEMUX_GET_LENGTH:
             pi64 = (int64_t*)va_arg( args, int64_t * );
-            *pi64 = p_sys->i_last_pts;
+            *pi64 = p_sys->i_duration;
+            return VLC_SUCCESS;
+
+        case DEMUX_SET_TIME:
+            i64 = (int64_t)va_arg( args, int64_t );
+            p_sys->i_first_pts = p_sys->i_last_pts - i64;
+            p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
             return VLC_SUCCESS;
 
         /* TODO implement others */
@@ -179,11 +238,15 @@ static int Demux( demux_t *p_demux )
 
     if ( !p_sys->i_last_pts )
     {
-        p_sys->i_last_pts = mdate();
+        p_sys->i_last_pts = p_sys->i_first_pts = mdate();
+        if ( p_sys->i_duration )
+            p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
     }
     else
     {
         p_sys->i_last_pts += (mtime_t)(1000000.0 / p_sys->f_fps);
+        if ( p_sys->i_duration && p_sys->i_last_pts > p_sys->i_end_pts )
+            return 0;
         mwait( p_sys->i_last_pts );
     }