Draw the text in the U and V planes as well. Removes the transparency effect.

Also check which chroma is in use and give an error message if it isn't
supported.

Someone (possibly me) should write some renderer functions for other
colorspaces.

modules/misc/freetype.c

@@ -2,7 +2,7 @@
  * freetype.c : Put text on the video, using freetype2
  *****************************************************************************
  * Copyright (C) 2002, 2003 VideoLAN
- * $Id: freetype.c,v 1.3 2003/07/19 15:15:01 sigmunau Exp $
+ * $Id: freetype.c,v 1.4 2003/07/20 16:26:33 sigmunau Exp $
  *
  * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
  *
@@ -46,6 +46,8 @@ static void Destroy   ( vlc_object_t * );
 
 static void Render    ( vout_thread_t *, picture_t *, 
 		        const subpicture_t * );
+static void RenderI420( vout_thread_t *, picture_t *, 
+		        const subpicture_t * );
 static int  AddText   ( vout_thread_t *, byte_t *, text_style_t *, int, 
 			int, int, mtime_t, mtime_t );
 static int GetUnicodeCharFromUTF8( byte_t ** );
@@ -203,6 +205,40 @@ static void Destroy( vlc_object_t *p_this )
  * This function merges the previously rendered freetype glyphs into a picture
  *****************************************************************************/
 static void Render( vout_thread_t *p_vout, picture_t *p_pic, 
+		    const subpicture_t *p_subpic )    
+{
+    switch( p_vout->output.i_chroma )
+    {
+        /* I420 target, no scaling */
+        case VLC_FOURCC('I','4','2','0'):
+        case VLC_FOURCC('I','Y','U','V'):
+        case VLC_FOURCC('Y','V','1','2'):
+            RenderI420( p_vout, p_pic, p_subpic );
+            break;
+#if 0
+        /* RV16 target, scaling */
+        case VLC_FOURCC('R','V','1','6'):
+            RenderRV16( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
+            break;
+
+        /* RV32 target, scaling */
+        case VLC_FOURCC('R','V','2','4'):
+        case VLC_FOURCC('R','V','3','2'):
+            RenderRV32( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
+            break;
+
+        /* NVidia overlay, no scaling */
+        case VLC_FOURCC('Y','U','Y','2'):
+            RenderYUY2( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
+            break;
+#endif
+        default:
+            msg_Err( p_vout, "unknown chroma, can't render SPU" );
+            break;
+    }
+}
+
+static void RenderI420( vout_thread_t *p_vout, picture_t *p_pic, 
 		    const subpicture_t *p_subpic )
 {
     subpicture_sys_t *p_string = p_subpic->p_sys;
@@ -252,11 +288,56 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic,
 			    //                                pixel = (pixel^alpha)^pixel;
 			    pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
                                 ( 255 * alpha >> 8 );
+#undef alpha
+#undef pixel
 			}
 		    }
 		}
 	    }
 	}
+        else
+        {
+	    if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
+	    {
+		pen_y = p_pic->p[i_plane].i_lines - ( p_string->i_height>>1) -
+		    (p_string->i_y_margin>>1);
+	    }
+	    else
+	    {
+		pen_y = p_string->i_y_margin >> 1;
+	    }
+	    if ( p_string->i_flags & OSD_ALIGN_RIGHT )
+	    {
+		pen_x = i_pitch - ( p_string->i_width >> 1 )
+		    - ( p_string->i_x_margin >> 1 );
+	    }
+	    else
+	    {
+		pen_x = p_string->i_x_margin >> 1;
+	    }
+
+	    for( i = 0; p_string->pp_glyphs[i] != NULL; i++ )
+	    {
+		if( p_string->pp_glyphs[i] )
+		{
+		    FT_BitmapGlyph p_glyph = p_string->pp_glyphs[ i ];
+#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ ( x + y * p_glyph->bitmap.width ) ] ]
+#define pixel p_in[ ( (p_string->p_glyph_pos[ i ].y>>1) + pen_y + (y>>1) -  ( p_glyph->top >> 1 ) ) * i_pitch + ( x >> 1 ) + pen_x + ( p_string->p_glyph_pos[ i ].x >> 1 ) + ( p_glyph->left >>1) ]
+		    for(y = 0; y < p_glyph->bitmap.rows; y+=2 )
+		    {
+			for( x = 0; x < p_glyph->bitmap.width; x+=2 )
+			{
+			    //                                pixel = alpha;
+			    //                                pixel = (pixel^alpha)^pixel;
+			    pixel = ( ( pixel * ( 0xFF - alpha ) ) >> 8 ) +
+                                ( 0x80 * alpha >> 8 );
+#undef alpha
+#undef pixel
+			}
+		    }
+		}
+	    }            
+        }
     }
 }