Add subscreen/follow mouse support to Mac OS X screen module.

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

modules/access/screen/mac.c

@@ -103,10 +103,16 @@ int screen_InitCapture( demux_t *p_demux )
     p_data->screen_width = viewport[2];
     p_data->screen_height = viewport[3];
     
-    p_data->left = 0;
-    p_data->top = 0;
-    p_data->src_width = p_data->screen_width;
-    p_data->src_height = p_data->screen_height;
+    p_data->left = p_sys->i_left;
+    p_data->top = p_sys->i_top;
+    p_data->src_width = var_CreateGetInteger( p_demux, "screen-width" );
+    if (p_data->src_width <= 0) {
+      p_data->src_width = p_data->screen_width;
+    }
+    p_data->src_height = var_CreateGetInteger( p_demux, "screen-height" );
+    if (p_data->src_height <= 0) {
+      p_data->src_height = p_data->screen_height;
+    }
     p_data->dest_width = p_data->src_width;
     p_data->dest_height = p_data->src_height;
     
@@ -127,9 +133,10 @@ int screen_InitCapture( demux_t *p_demux )
     
     es_format_Init( &p_sys->fmt, VIDEO_ES, VLC_FOURCC( 'R','V','3','2' ) );
     
-    p_sys->fmt.video.i_width = p_data->dest_width;
-    p_sys->fmt.video.i_visible_width = p_data->dest_width;
-    p_sys->fmt.video.i_height = p_data->dest_height;
+    /* p_sys->fmt.video.i_* must set to screen size, not subscreen size */
+    p_sys->fmt.video.i_width = p_data->screen_width;
+    p_sys->fmt.video.i_visible_width = p_data->screen_width;
+    p_sys->fmt.video.i_height = p_data->screen_height;
     p_sys->fmt.video.i_bits_per_pixel = 32;
     
     glGenTextures( 1, &( p_data->texture ) );
@@ -184,6 +191,23 @@ block_t *screen_Capture( demux_t *p_demux )
         return 0;
     }
     
+    CGPoint cursor_pos;
+    CGError cursor_result;
+    
+    cursor_pos.x = 0;
+    cursor_pos.y = 0;
+    
+    cursor_result
+      = CGSGetCurrentCursorLocation( p_data->connection, &cursor_pos );
+    
+    if( p_sys->b_follow_mouse
+        && cursor_result == kCGErrorSuccess )
+    {
+        FollowMouse( p_sys, cursor_pos.x, cursor_pos.y );
+        p_data->left = p_sys->i_left;
+        p_data->top = p_sys->i_top;
+    }
+    
     CGLSetCurrentContext( p_data->screen );
     glReadPixels( p_data->left,
                   p_data->screen_height - p_data->top - p_data->src_height,
@@ -212,18 +236,13 @@ block_t *screen_Capture( demux_t *p_demux )
     glEnd();
     glDisable( GL_TEXTURE_2D );
     
-    CGPoint cursor_pos;
     int size;
     int tmp1, tmp2, tmp3, tmp4;
     unsigned char *cursor_image;
     CGRect cursor_rect;
     CGPoint cursor_hot;
     
-    cursor_pos.x = 0;
-    cursor_pos.y = 0;
-    
-    if( CGSGetCurrentCursorLocation( p_data->connection, &cursor_pos )
-        == kCGErrorSuccess
+    if( cursor_result == kCGErrorSuccess
         && CGSGetGlobalCursorDataSize( p_data->connection, &size )
         == kCGErrorSuccess )
     {