Add picture specific alpha setting for mosaic pictures.

Add coordinates settings for mosaic pictures. (This kind of duplicates the --mosaic-offsets setting which I'm thinking about removing.)

modules/stream_out/mosaic_bridge.c

@@ -115,8 +115,17 @@ static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
 
 static void video_link_picture_decoder( decoder_t *, picture_t * );
 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
-static int MosaicBridgeCallback( vlc_object_t *, char const *,
-                                 vlc_value_t, vlc_value_t, void * );
+
+static int HeightCallback( vlc_object_t *, char const *,
+                           vlc_value_t, vlc_value_t, void * );
+static int WidthCallback( vlc_object_t *, char const *,
+                          vlc_value_t, vlc_value_t, void * );
+static int alphaCallback( vlc_object_t *, char const *,
+                          vlc_value_t, vlc_value_t, void * );
+static int xCallback( vlc_object_t *, char const *,
+                      vlc_value_t, vlc_value_t, void * );
+static int yCallback( vlc_object_t *, char const *,
+                      vlc_value_t, vlc_value_t, void * );
 
 /*****************************************************************************
  * Module descriptor
@@ -144,6 +153,18 @@ static int MosaicBridgeCallback( vlc_object_t *, char const *,
     "Force the use of a specific chroma. Use YUVA if you're planning " \
     "to use the Alphamask or Bluescreen video filter." )
 
+#define ALPHA_TEXT N_("Transparency")
+#define ALPHA_LONGTEXT N_( \
+    "Transparency of the mosaic picture." )
+
+#define X_TEXT N_("X offset")
+#define X_LONGTEXT N_( \
+    "X coordinate of the upper left corner in the mosaic if non negative." )
+
+#define Y_TEXT N_("Y offset")
+#define Y_LONGTEXT N_( \
+    "Y coordinate of the upper left corner in the mosaic if non negative." )
+
 #define CFG_PREFIX "sout-mosaic-bridge-"
 
 vlc_module_begin();
@@ -166,11 +187,16 @@ vlc_module_begin();
     add_module_list( CFG_PREFIX "vfilter", "video filter2",
                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false );
 
+    add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
+                            ALPHA_TEXT, ALPHA_LONGTEXT, false );
+    add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false );
+    add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false );
+
     set_callbacks( Open, Close );
 vlc_module_end();
 
 static const char *ppsz_sout_options[] = {
-    "id", "width", "height", "sar", "vfilter", "chroma", NULL
+    "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 };
 
 /*****************************************************************************
@@ -204,13 +230,11 @@ static int Open( vlc_object_t *p_this )
 
     p_sys->i_height =
         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
-    var_AddCallback( p_stream, CFG_PREFIX "height", MosaicBridgeCallback,
-                     p_stream );
+    var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 
     p_sys->i_width =
         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
-    var_AddCallback( p_stream, CFG_PREFIX "width", MosaicBridgeCallback,
-                     p_stream );
+    var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 
     var_Get( p_stream, CFG_PREFIX "sar", &val );
     if ( val.psz_string )
@@ -246,6 +270,15 @@ static int Open( vlc_object_t *p_this )
         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
     }
 
+#define INT_COMMAND( a ) \
+    var_Create( p_stream, CFG_PREFIX #a, \
+                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
+    var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
+                     p_stream );
+    INT_COMMAND( alpha )
+    INT_COMMAND( x )
+    INT_COMMAND( y )
+
     p_stream->pf_add    = Add;
     p_stream->pf_del    = Del;
     p_stream->pf_send   = Send;
@@ -350,6 +383,10 @@ static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 
     p_sys->p_es = p_es = p_bridge->pp_es[i];
 
+    p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
+    p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
+    p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
+
     //p_es->fmt = *p_fmt;
     p_es->psz_id = p_sys->psz_id;
     p_es->p_picture = NULL;
@@ -851,33 +888,78 @@ static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 /**********************************************************************
  * Callback to update (some) params on the fly
  **********************************************************************/
-static int MosaicBridgeCallback( vlc_object_t *p_this, char const *psz_var,
-                                 vlc_value_t oldval, vlc_value_t newval,
-                                 void *p_data )
+static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
+                           vlc_value_t oldval, vlc_value_t newval,
+                           void *p_data )
 {
     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
     sout_stream_t *p_stream = (sout_stream_t *)p_data;
     sout_stream_sys_t *p_sys = p_stream->p_sys;
-    int i_ret = VLC_SUCCESS;
 
-#define VAR_IS( a ) !strcmp( psz_var, CFG_PREFIX a )
-    if( VAR_IS( "height" ) )
-    {
-        /* We create the handler before updating the value in p_sys
-         * so we don't have to worry about locking */
-        if( !p_sys->p_image && newval.i_int )
-            p_sys->p_image = image_HandlerCreate( p_stream );
-        p_sys->i_height = newval.i_int;
-    }
-    else if( VAR_IS( "width" ) )
-    {
-        /* We create the handler before updating the value in p_sys
-         * so we don't have to worry about locking */
-        if( !p_sys->p_image && newval.i_int )
-            p_sys->p_image = image_HandlerCreate( p_stream );
-        p_sys->i_width = newval.i_int;
-    }
-#undef VAR_IS
+    /* We create the handler before updating the value in p_sys
+     * so we don't have to worry about locking */
+    if( !p_sys->p_image && newval.i_int )
+        p_sys->p_image = image_HandlerCreate( p_stream );
+    p_sys->i_height = newval.i_int;
+
+    return VLC_SUCCESS;
+}
 
-    return i_ret;
+static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
+                           vlc_value_t oldval, vlc_value_t newval,
+                           void *p_data )
+{
+    VLC_UNUSED(p_this); VLC_UNUSED(oldval);
+    sout_stream_t *p_stream = (sout_stream_t *)p_data;
+    sout_stream_sys_t *p_sys = p_stream->p_sys;
+
+    /* We create the handler before updating the value in p_sys
+     * so we don't have to worry about locking */
+    if( !p_sys->p_image && newval.i_int )
+        p_sys->p_image = image_HandlerCreate( p_stream );
+    p_sys->i_width = newval.i_int;
+
+    return VLC_SUCCESS;
+}
+
+static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
+                          vlc_value_t oldval, vlc_value_t newval,
+                          void *p_data )
+{
+    VLC_UNUSED(p_this); VLC_UNUSED(oldval);
+    sout_stream_t *p_stream = (sout_stream_t *)p_data;
+    sout_stream_sys_t *p_sys = p_stream->p_sys;
+
+    if( p_sys->p_es )
+        p_sys->p_es->i_alpha = newval.i_int;
+
+    return VLC_SUCCESS;
+}
+
+static int xCallback( vlc_object_t *p_this, char const *psz_var,
+                      vlc_value_t oldval, vlc_value_t newval,
+                      void *p_data )
+{
+    VLC_UNUSED(p_this); VLC_UNUSED(oldval);
+    sout_stream_t *p_stream = (sout_stream_t *)p_data;
+    sout_stream_sys_t *p_sys = p_stream->p_sys;
+
+    if( p_sys->p_es )
+        p_sys->p_es->i_x = newval.i_int;
+
+    return VLC_SUCCESS;
+}
+
+static int yCallback( vlc_object_t *p_this, char const *psz_var,
+                      vlc_value_t oldval, vlc_value_t newval,
+                      void *p_data )
+{
+    VLC_UNUSED(p_this); VLC_UNUSED(oldval);
+    sout_stream_t *p_stream = (sout_stream_t *)p_data;
+    sout_stream_sys_t *p_sys = p_stream->p_sys;
+
+    if( p_sys->p_es )
+        p_sys->p_es->i_y = newval.i_int;
+
+    return VLC_SUCCESS;
 }

modules/video_filter/mosaic.c

 /*****************************************************************************
  * mosaic.c : Mosaic video plugin for vlc
  *****************************************************************************
- * Copyright (C) 2004-2007 the VideoLAN team
+ * Copyright (C) 2004-2008 the VideoLAN team
  * $Id$
  *
- * Authors: Antoine Cellerier <dionoea@via.ecp.fr>
+ * Authors: Antoine Cellerier <dionoea at videolan dot org>
  *          Christophe Massiot <massiot@via.ecp.fr>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -181,8 +181,8 @@ vlc_module_begin();
     set_capability( "sub filter", 0 );
     set_callbacks( CreateFilter, DestroyFilter );
 
-    add_integer( CFG_PREFIX "alpha", 255, NULL,
-                 ALPHA_TEXT, ALPHA_LONGTEXT, false );
+    add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
+                            ALPHA_TEXT, ALPHA_LONGTEXT, false );
 
     add_integer( CFG_PREFIX "height", 100, NULL,
                  HEIGHT_TEXT, HEIGHT_LONGTEXT, false );
@@ -664,50 +664,56 @@ static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
             p_region->picture.pf_release = MosaicReleasePicture;
         }
 
-        if( p_sys->i_position == position_offsets )
+        if( p_es->i_x >= 0 && p_es->i_y >= 0 )
         {
-            p_region->i_x = p_sys->pi_x_offsets[i_real_index];
-        }
-        else if( fmt_out.i_width > col_inner_width ||
-            p_sys->b_ar || p_sys->b_keep )
-        {
-            /* we don't have to center the video since it takes the
-            whole rectangle area or it's larger than the rectangle */
-            p_region->i_x = p_sys->i_xoffset
-                        + i_col * ( p_sys->i_width / p_sys->i_cols )
-                        + ( i_col * p_sys->i_borderw ) / p_sys->i_cols;
-        }
-        else
-        {
-            /* center the video in the dedicated rectangle */
-            p_region->i_x = p_sys->i_xoffset
-                    + i_col * ( p_sys->i_width / p_sys->i_cols )
-                    + ( i_col * p_sys->i_borderw ) / p_sys->i_cols
-                    + ( col_inner_width - fmt_out.i_width ) / 2;
+            p_region->i_x = p_es->i_x;
+            p_region->i_y = p_es->i_y;
         }
-
-        if( p_sys->i_position == position_offsets )
+        else if( p_sys->i_position == position_offsets )
         {
+            p_region->i_x = p_sys->pi_x_offsets[i_real_index];
             p_region->i_y = p_sys->pi_y_offsets[i_real_index];
         }
-        else if( fmt_out.i_height > row_inner_height
-            || p_sys->b_ar || p_sys->b_keep )
-        {
-            /* we don't have to center the video since it takes the
-            whole rectangle area or it's taller than the rectangle */
-            p_region->i_y = p_sys->i_yoffset
-                    + i_row * ( p_sys->i_height / p_sys->i_rows )
-                    + ( i_row * p_sys->i_borderh ) / p_sys->i_rows;
-        }
         else
         {
-            /* center the video in the dedicated rectangle */
-            p_region->i_y = p_sys->i_yoffset
-                    + i_row * ( p_sys->i_height / p_sys->i_rows )
-                    + ( i_row * p_sys->i_borderh ) / p_sys->i_rows
-                    + ( row_inner_height - fmt_out.i_height ) / 2;
+            if( fmt_out.i_width > col_inner_width ||
+                p_sys->b_ar || p_sys->b_keep )
+            {
+                /* we don't have to center the video since it takes the
+                whole rectangle area or it's larger than the rectangle */
+                p_region->i_x = p_sys->i_xoffset
+                            + i_col * ( p_sys->i_width / p_sys->i_cols )
+                            + ( i_col * p_sys->i_borderw ) / p_sys->i_cols;
+            }
+            else
+            {
+                /* center the video in the dedicated rectangle */
+                p_region->i_x = p_sys->i_xoffset
+                        + i_col * ( p_sys->i_width / p_sys->i_cols )
+                        + ( i_col * p_sys->i_borderw ) / p_sys->i_cols
+                        + ( col_inner_width - fmt_out.i_width ) / 2;
+            }
+
+            if( fmt_out.i_height > row_inner_height
+                || p_sys->b_ar || p_sys->b_keep )
+            {
+                /* we don't have to center the video since it takes the
+                whole rectangle area or it's taller than the rectangle */
+                p_region->i_y = p_sys->i_yoffset
+                        + i_row * ( p_sys->i_height / p_sys->i_rows )
+                        + ( i_row * p_sys->i_borderh ) / p_sys->i_rows;
+            }
+            else
+            {
+                /* center the video in the dedicated rectangle */
+                p_region->i_y = p_sys->i_yoffset
+                        + i_row * ( p_sys->i_height / p_sys->i_rows )
+                        + ( i_row * p_sys->i_borderh ) / p_sys->i_rows
+                        + ( row_inner_height - fmt_out.i_height ) / 2;
+            }
         }
         p_region->i_align = p_sys->i_align;
+        p_region->i_alpha = p_es->i_alpha;
 
         if( p_region_prev == NULL )
         {

modules/video_filter/mosaic.h

@@ -29,6 +29,10 @@ typedef struct bridged_es_t
     picture_t **pp_last;
     bool b_empty;
     char *psz_id;
+
+    int i_alpha;
+    int i_x;
+    int i_y;
 } bridged_es_t;
 
 typedef struct bridge_t