]> git.sesse.net Git - mlt/blobdiff - src/framework/mlt_frame.c
+ Added an option to override alignment and transparent borders for compositing
[mlt] / src / framework / mlt_frame.c
index 0f54d4dfbae552235175f04059cc62f20c95166e..115978dd1cc5103c6c4fa69bd8d26c23a1c0eb01 100644 (file)
@@ -263,18 +263,19 @@ int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *for
        mlt_producer producer = mlt_properties_get_data( properties, "test_card_producer", NULL );
        int error = 0;
 
-       *width = *width >> 1 << 1;
-       
        if ( get_image != NULL )
        {
                mlt_properties_set_int( properties, "image_count", mlt_properties_get_int( properties, "image_count" ) - 1 );
                mlt_position position = mlt_frame_get_position( this );
                error = get_image( this, buffer, format, width, height, writable );
+               mlt_properties_set_int( properties, "width", *width );
+               mlt_properties_set_int( properties, "height", *height );
+               mlt_properties_set_int( properties, "format", *format );
                mlt_frame_set_position( this, position );
        }
        else if ( mlt_properties_get_data( properties, "image", NULL ) != NULL )
        {
-               *format = mlt_image_yuv422;
+               *format = mlt_properties_get_int( properties, "format" );
                *buffer = mlt_properties_get_data( properties, "image", NULL );
                *width = mlt_properties_get_int( properties, "width" );
                *height = mlt_properties_get_int( properties, "height" );
@@ -293,6 +294,7 @@ int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *for
                        mlt_properties_set_data( properties, "image", *buffer, *width * *height * 2, NULL, NULL );
                        mlt_properties_set_int( properties, "width", *width );
                        mlt_properties_set_int( properties, "height", *height );
+                       mlt_properties_set_int( properties, "format", *format );
                        mlt_properties_set_double( properties, "aspect_ratio", mlt_frame_get_aspect_ratio( test_frame ) );
                }
                else
@@ -311,6 +313,7 @@ int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *for
                *height = *height == 0 ? 576 : *height;
                size = *width * *height;
 
+               mlt_properties_set_int( properties, "format", *format );
                mlt_properties_set_int( properties, "width", *width );
                mlt_properties_set_int( properties, "height", *height );
                mlt_properties_set_int( properties, "aspect_ratio", 0 );
@@ -329,6 +332,7 @@ int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *for
                                        memset( *buffer, 255, size );
                                break;
                        case mlt_image_rgb24a:
+                       case mlt_image_opengl:
                                size *= 4;
                                size += *width * 4;
                                *buffer = mlt_pool_alloc( size );
@@ -425,10 +429,10 @@ int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *for
        if ( mlt_properties_get( properties, "meta.volume" ) )
        {
                double value = mlt_properties_get_double( properties, "meta.volume" );
+
                if ( value == 0.0 )
                {
                        memset( *buffer, 0, *samples * *channels * 2 );
-                       mlt_properties_set_double( properties, "meta.volume", 1.0 );
                }
                else if ( value != 1.0 )
                {
@@ -439,8 +443,9 @@ int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *for
                                *p = *p * value;
                                p ++;
                        }
-                       mlt_properties_set_double( properties, "meta.volume", 1.0 );
                }
+
+               mlt_properties_set( properties, "meta.volume", NULL );
        }
 
        return 0;
@@ -633,81 +638,37 @@ int mlt_convert_yuv420p_to_yuv422( uint8_t *yuv420p, int width, int height, int
        return ret;
 }
 
-uint8_t *mlt_resize_alpha( uint8_t *input, int owidth, int oheight, int iwidth, int iheight )
+uint8_t *mlt_resize_alpha( uint8_t *input, int owidth, int oheight, int iwidth, int iheight, uint8_t alpha_value )
 {
        uint8_t *output = NULL;
 
        if ( input != NULL && ( iwidth != owidth || iheight != oheight ) && ( owidth > 6 && oheight > 6 ) )
        {
-               iwidth = iwidth - ( iwidth % 2 );
-               owidth = owidth - ( owidth % 2 );
+               uint8_t *out_line;
+               int offset_x = ( owidth - iwidth ) / 2;
+               int offset_y = ( oheight - iheight ) / 2;
+               int iused = iwidth;
 
                output = mlt_pool_alloc( owidth * oheight );
+               memset( output, alpha_value, owidth * oheight );
 
-               // Coordinates (0,0 is middle of output)
-               int y;
-
-               // Calculate ranges
-               int out_x_range = owidth / 2;
-               int out_y_range = oheight / 2;
-               int in_x_range = iwidth / 2 < out_x_range ? iwidth / 2 : out_x_range;
-               int in_y_range = iheight / 2 < out_y_range ? iheight / 2 : out_y_range;
-
-               // Output pointers
-               uint8_t *out_line = output;
-               uint8_t *out_ptr = out_line;
-
-               // Calculate a middle and possibly invalid pointer in the input
-               uint8_t *in_middle = input + iwidth * ( iheight / 2 ) + ( iwidth / 2 );
-               int in_line = - in_y_range * iwidth - in_x_range;
-
-               int elements;
+               offset_x -= offset_x % 2;
 
-               // Fill whole section with black
-               y = out_y_range - ( iheight / 2 );
-               int blank_elements = owidth * y;
-               elements = blank_elements;
-               while ( elements -- )
-                       *out_line ++ = 0;
-
-               int active_width = iwidth;
-               int inactive_width = out_x_range - in_x_range;
-               uint8_t *p = NULL;
-               uint8_t *end = NULL;
+               out_line = output + offset_y * owidth;
+               out_line += offset_x;
 
                // Loop for the entirety of our output height.
                while ( iheight -- )
                {
-                       // Start at the beginning of the line
-                       out_ptr = out_line;
-
-                       // Fill the outer part with black
-                       elements = inactive_width;
-                       while ( elements -- )
-                               *out_ptr ++ = 0;
-
                        // We're in the input range for this row.
-                       p = in_middle + in_line;
-                       end = out_ptr + active_width;
-                       while ( out_ptr != end )
-                               *out_ptr ++ = *p ++;
-
-                       // Fill the outer part with black
-                       elements = inactive_width;
-                       while ( elements -- )
-                               *out_ptr ++ = 0;
-       
+                       memcpy( out_line, input, iused );
+
                        // Move to next input line
-                       in_line += iwidth;
+                       input += iwidth;
 
                        // Move to next output line
                        out_line += owidth;
                }
-
-               // Fill whole section with black
-               elements = blank_elements;
-               while ( elements -- )
-                       *out_line ++ = 0;
        }
 
        return output;
@@ -718,12 +679,13 @@ void mlt_resize_yuv422( uint8_t *output, int owidth, int oheight, uint8_t *input
        // Calculate strides
        int istride = iwidth * 2;
        int ostride = owidth * 2;
+       int offset_x = ( owidth - iwidth );
+       int offset_y = ( oheight - iheight ) / 2;
+       uint8_t *in_line = input;
+       uint8_t *out_line;
+       int size = owidth * oheight;
+       uint8_t *p = output;
 
-       iwidth = iwidth - ( iwidth % 2 );
-       owidth = owidth - ( owidth % 2 );
-       //iheight = iheight - ( iheight % 2 );
-       //oheight = oheight - ( oheight % 2 );
-       
        // Optimisation point
        if ( output == NULL || input == NULL || ( owidth <= 6 || oheight <= 6 || iwidth <= 6 || oheight <= 6 ) )
        {
@@ -735,93 +697,29 @@ void mlt_resize_yuv422( uint8_t *output, int owidth, int oheight, uint8_t *input
                return;
        }
 
-       // Coordinates (0,0 is middle of output)
-       int y;
-
-       // Calculate ranges
-       int out_x_range = owidth / 2;
-       int out_y_range = oheight / 2;
-       int in_x_range = iwidth / 2 < out_x_range ? iwidth / 2 : out_x_range;
-       int in_y_range = iheight / 2 < out_y_range ? iheight / 2 : out_y_range;
-
-       // Output pointers
-       uint8_t *out_line = output;
-       uint8_t *out_ptr = out_line;
-
-       // Calculate a middle and possibly invalid pointer in the input
-       uint8_t *in_middle = input + istride * ( iheight / 2 ) + iwidth;
-       int in_line = - in_y_range * istride - in_x_range * 2;
-
-       int elements;
-
-       // Fill whole section with black
-       y = out_y_range - ( iheight / 2 );
-       int blank_elements = ostride * y / 2;
-       elements = blank_elements;
-       while ( elements -- )
+       while( size -- )
        {
-               *out_line ++ = 16;
-               *out_line ++ = 128;
+               *p ++ = 16;
+               *p ++ = 128;
        }
 
-       int active_width = 2 * iwidth;
-       int left_inactive_width = out_x_range - in_x_range;
-       int right_inactive_width = left_inactive_width;
-       uint8_t *p = NULL;
-       uint8_t *end = NULL;
+       offset_x -= offset_x % 4;
 
-       if ( in_line % 4 )
-       {
-               active_width -= 2;
-               in_middle += 2;
-               right_inactive_width += 2;
-       }
+       out_line = output + offset_y * ostride;
+       out_line += offset_x;
 
        // Loop for the entirety of our output height.
        while ( iheight -- )
        {
-               // Start at the beginning of the line
-               out_ptr = out_line;
-
-               // Fill the outer part with black
-               elements = left_inactive_width;
-               while ( elements -- )
-               {
-                       *out_ptr ++ = 16;
-                       *out_ptr ++ = 128;
-               }
-
                // We're in the input range for this row.
-               p = in_middle + in_line;
-               end = out_ptr + active_width;
-               while ( out_ptr != end )
-               {
-                       *out_ptr ++ = *p ++;
-                       *out_ptr ++ = *p ++;
-               }
-
-               // Fill the outer part with black
-               elements = right_inactive_width;
-               while ( elements -- )
-               {
-                       *out_ptr ++ = 16;
-                       *out_ptr ++ = 128;
-               }
+               memcpy( out_line, in_line, iwidth * 2 );
 
-               // Move to next input line
-               in_line += istride;
+               // Move to next input line
+               in_line += istride;
 
-               // Move to next output line
-               out_line += ostride;
+               // Move to next output line
+               out_line += ostride;
        }
-
-       // Fill whole section with black
-       elements = blank_elements;
-       while ( elements -- )
-       {
-               *out_line ++ = 16;
-               *out_line ++ = 128;
-       }
 }
 
 /** A resizing function for yuv422 frames - this does not rescale, but simply
@@ -843,6 +741,8 @@ uint8_t *mlt_frame_resize_yuv422( mlt_frame this, int owidth, int oheight )
        // If width and height are correct, don't do anything
        if ( iwidth != owidth || iheight != oheight )
        {
+               uint8_t alpha_value = mlt_properties_get_int( properties, "resize_alpha" );
+
                // Create the output image
                uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
 
@@ -855,10 +755,10 @@ uint8_t *mlt_frame_resize_yuv422( mlt_frame this, int owidth, int oheight )
                mlt_properties_set_int( properties, "height", oheight );
 
                // We should resize the alpha too
-               alpha = mlt_resize_alpha( alpha, owidth, oheight, iwidth, iheight );
+               alpha = mlt_resize_alpha( alpha, owidth, oheight, iwidth, iheight, alpha_value );
                if ( alpha != NULL )
                {
-                       mlt_properties_set_data( properties, "alpha", alpha, owidth * ( oheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL );
+                       mlt_properties_set_data( properties, "alpha", alpha, owidth * oheight, ( mlt_destructor )mlt_pool_release, NULL );
                        this->get_alpha_mask = NULL;
                }
 
@@ -1021,6 +921,7 @@ int mlt_frame_mix_audio( mlt_frame this, mlt_frame that, float weight_start, flo
        return ret;
 }
 
+/* Will this break when mlt_position is converted to double? -Zach */
 int mlt_sample_calculator( float fps, int frequency, int64_t position )
 {
        int samples = 0;