More SDL tweaks

[melted] / mlt / src / framework / mlt_frame.c

diff --git a/mlt/src/framework/mlt_frame.c b/mlt/src/framework/mlt_frame.c
index d1f6913..f0b9351 100644 (file)
--- a/mlt/src/framework/mlt_frame.c
+++ b/mlt/src/framework/mlt_frame.c
@@ -432,6 +432,66 @@ int mlt_frame_composite_yuv( mlt_frame this, mlt_frame that, int x, int y, float
        return ret;
 }
 
+void mlt_resize_yuv422( uint8_t *output, int owidth, int oheight, uint8_t *input, int iwidth, int iheight )
+{
+       // Calculate strides
+       int istride = iwidth * 2;
+       int ostride = owidth * 2;
+
+       // Coordinates (0,0 is middle of output)
+       int y, x;
+
+       // Calculate ranges
+       int out_x_range = owidth / 2;
+       int out_y_range = oheight / 2;
+       int in_x_range = iwidth / 2;
+       int in_y_range = iheight / 2;
+
+       // Output pointers
+       uint8_t *out_line = output;
+       uint8_t *out_ptr;
+
+       // Calculate a middle and possibly invalid pointer in the input
+       uint8_t *in_middle = input + istride * in_y_range + in_x_range * 2;
+       int in_line = - out_y_range * istride - out_x_range * 2;
+       int in_ptr;
+
+       // Loop for the entirety of our output height.
+       for ( y = - out_y_range; y < out_y_range ; y ++ )
+       {
+               // Start at the beginning of the line
+               out_ptr = out_line;
+
+               // Point the start of the current input line (NB: can be out of range)
+               in_ptr = in_line;
+
+               // Loop for the entirety of our output row.
+               for ( x = - out_x_range; x < out_x_range; x ++ )
+               {
+               // Check if x and y are in the valid input range.
+               if ( abs( x ) < in_x_range && abs( y ) < in_y_range  )
+               {
+                       // We're in the input range for this row.
+                       *out_ptr ++ = *( in_middle + in_ptr ++ );
+                       *out_ptr ++ = *( in_middle + in_ptr ++ );
+               }
+               else
+               {
+                       // We're not in the input range for this row.
+                       *out_ptr ++ = 16;
+                       *out_ptr ++ = 128;
+                       in_ptr += 2;
+               }
+               }
+
+               // Move to next output line
+               out_line += ostride;
+
+               // Move to next input line
+               in_line += istride;
+       }
+}
+
 /** A resizing function for yuv422 frames - this does not rescale, but simply
        resizes. It assumes yuv422 images available on the frame so use with care.
 */
@@ -452,62 +512,8 @@ uint8_t *mlt_frame_resize_yuv422( mlt_frame this, int owidth, int oheight )
                // Create the output image
                uint8_t *output = malloc( owidth * oheight * 2 );
 
-               // Calculate strides
-               int istride = iwidth * 2;
-               int ostride = owidth * 2;
-
-       // Coordinates (0,0 is middle of output)
-       int y, x;
-
-       // Calculate ranges
-       int out_x_range = owidth / 2;
-       int out_y_range = oheight / 2;
-       int in_x_range = iwidth / 2;
-       int in_y_range = iheight / 2;
-
-       // Output pointers
-       uint8_t *out_line = output;
-       uint8_t *out_ptr;
-
-       // Calculate a middle and possibly invalid pointer in the input
-       uint8_t *in_middle = input + istride * in_y_range + in_x_range * 2;
-       int in_line = - out_y_range * istride - out_x_range * 2;
-       int in_ptr;
-
-       // Loop for the entirety of our output height.
-       for ( y = - out_y_range; y < out_y_range ; y ++ )
-       {
-               // Start at the beginning of the line
-               out_ptr = out_line;
-       
-               // Point the start of the current input line (NB: can be out of range)
-               in_ptr = in_line;
-       
-               // Loop for the entirety of our output row.
-               for ( x = - out_x_range; x < out_x_range; x ++ )
-               {
-               // Check if x and y are in the valid input range.
-               if ( abs( x ) < in_x_range && abs( y ) < in_y_range  )
-               {
-                       // We're in the input range for this row.
-                       *out_ptr ++ = *( in_middle + in_ptr ++ );
-                       *out_ptr ++ = *( in_middle + in_ptr ++ );
-               }
-               else
-               {
-                       // We're not in the input range for this row.
-                       *out_ptr ++ = 16;
-                       *out_ptr ++ = 128;
-                       in_ptr += 2;
-               }
-               }
-
-               // Move to next output line
-               out_line += ostride;
-
-               // Move to next input line
-               in_line += istride;
-       }
+               // Call the generic resize
+               mlt_resize_yuv422( output, owidth, oheight, input, iwidth, iheight );
 
                // Now update the frame
                mlt_properties_set_data( properties, "image", output, owidth * oheight * 2, free, NULL );