unique ids
[melted] / src / modules / gtk2 / producer_pango.c
index a626a9d..c26e61a 100644 (file)
@@ -32,6 +32,7 @@ struct producer_pango_s
        int width;
        int height;
        uint8_t *image;
+       uint8_t *alpha;
        char *fgcolor;
        char *bgcolor;
        int   align;
@@ -54,6 +55,24 @@ static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg );
 static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font,
        rgba_color fg, rgba_color bg, int pad, int align );
 
+/** Parse the alignment property.
+*/
+
+static int alignment_parse( char* align )
+{
+       int ret = pango_align_left;
+
+       if ( align == NULL );
+       else if ( isdigit( align[ 0 ] ) )
+               ret = atoi( align );
+       else if ( align[ 0 ] == 'c' || align[ 0 ] == 'm' )
+               ret = pango_align_center;
+       else if ( align[ 0 ] == 'r' )
+               ret = pango_align_right;
+
+       return ret;
+}
+
 mlt_producer producer_pango_init( const char *filename )
 {
        producer_pango this = calloc( sizeof( struct producer_pango_s ), 1 );
@@ -80,7 +99,6 @@ mlt_producer producer_pango_init( const char *filename )
 
                if ( filename == NULL )
                {
-                       mlt_properties_set( properties, "resource", "pango" );
                        mlt_properties_set( properties, "markup", "" );
                }
                else if ( filename[ 0 ] == '+' || strstr( filename, "/+" ) )
@@ -130,7 +148,6 @@ mlt_producer producer_pango_init( const char *filename )
                        }
                        else
                        {
-                               mlt_properties_set( properties, "resource", "pango" );
                                mlt_properties_set( properties, "markup", "" );
                        }
                }
@@ -223,16 +240,16 @@ static void refresh_image( mlt_frame frame, int width, int height )
        // Get producer properties
        char *fg = mlt_properties_get( producer_props, "fgcolour" );
        char *bg = mlt_properties_get( producer_props, "bgcolour" );
-       int align = mlt_properties_get_int( producer_props, "align" );
+       int align = alignment_parse( mlt_properties_get( producer_props, "align" ) );
        int pad = mlt_properties_get_int( producer_props, "pad" );
        char *markup = mlt_properties_get( producer_props, "markup" );
        char *text = mlt_properties_get( producer_props, "text" );
        char *font = mlt_properties_get( producer_props, "font" );
 
        // See if any properties changed
-       int property_changed = ( this->fgcolor == NULL || strcmp( fg, this->fgcolor ) );
-       property_changed = property_changed || ( this->bgcolor == NULL || strcmp( bg, this->bgcolor ) );
-       property_changed = property_changed || ( align != this->align );
+       int property_changed = ( align != this->align );
+       property_changed = property_changed || ( this->fgcolor == NULL || ( fg && strcmp( fg, this->fgcolor ) ) );
+       property_changed = property_changed || ( this->bgcolor == NULL || ( bg && strcmp( bg, this->bgcolor ) ) );
        property_changed = property_changed || ( pad != this->pad );
        property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
        property_changed = property_changed || ( text && this->text && strcmp( text, this->text ) );
@@ -252,6 +269,11 @@ static void refresh_image( mlt_frame frame, int width, int height )
                rgba_color fgcolor = parse_color( this->fgcolor );
                rgba_color bgcolor = parse_color( this->bgcolor );
 
+               mlt_pool_release( this->image );
+               mlt_pool_release( this->alpha );
+               this->image = NULL;
+               this->alpha = NULL;
+
                // Render the title
                pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, pad, align );
 
@@ -266,45 +288,52 @@ static void refresh_image( mlt_frame frame, int width, int height )
                        // Store the width/height of the pixbuf temporarily
                        this->width = gdk_pixbuf_get_width( pixbuf );
                        this->height = gdk_pixbuf_get_height( pixbuf );
-
-                       mlt_properties_set_int( producer_props, "bpp", gdk_pixbuf_get_has_alpha( pixbuf ) ? 4 : 3 );
                }
        }
-       else if ( this->image == NULL || width != this->width || height != this->height )
+       else if ( width > 0 && ( this->image == NULL || width != this->width || height != this->height ) )
        {
+               mlt_pool_release( this->image );
+               mlt_pool_release( this->alpha );
+               this->image = NULL;
+               this->alpha = NULL;
+
                pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
-               mlt_properties_set_int( producer_props, "bpp", gdk_pixbuf_get_has_alpha( pixbuf ) ? 4 : 3 );
        }
 
-       int bpp = mlt_properties_get_int( producer_props, "bpp" );
-
        // If we have a pixbuf and a valid width
        if ( pixbuf && width > 0 )
        {
-               int i;
-               
+               char *interps = mlt_properties_get( properties, "rescale.interp" );
+               int interp = GDK_INTERP_BILINEAR;
+
+               if ( strcmp( interps, "nearest" ) == 0 )
+                       interp = GDK_INTERP_NEAREST;
+               else if ( strcmp( interps, "tiles" ) == 0 )
+                       interp = GDK_INTERP_TILES;
+               else if ( strcmp( interps, "hyper" ) == 0 )
+                       interp = GDK_INTERP_HYPER;
+
+//             fprintf( stderr, "SCALING PANGO from %dx%d to %dx%d was %dx%d\n", gdk_pixbuf_get_width( pixbuf ), gdk_pixbuf_get_height( pixbuf ), width, height, this->width, this->height );
+                       
                // Note - the original pixbuf is already safe and ready for destruction
-               pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, GDK_INTERP_HYPER );
+               pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
 
                // Store width and height
-               this->width = gdk_pixbuf_get_width( pixbuf );
-               this->height = gdk_pixbuf_get_height( pixbuf );
+               this->width = width;
+               this->height = height;
 
                // Allocate/define image
-               // IRRIGATE ME
-               uint8_t *image = malloc( this->width * ( this->height + 1 )* bpp );
+               this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 );
+               this->alpha = mlt_pool_alloc( this->width * this->height );
 
-               for ( i = 0; i < height; i++ )
-                       memcpy( image + i * width * bpp,
-                               gdk_pixbuf_get_pixels( pixbuf ) + i * gdk_pixbuf_get_rowstride( pixbuf ),
-                               gdk_pixbuf_get_width( pixbuf ) * bpp );
+               // Convert the image
+               mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
+                                                                         this->width, this->height,
+                                                                         gdk_pixbuf_get_rowstride( pixbuf ),
+                                                                         this->image, this->alpha );
 
                // Finished with pixbuf now
                g_object_unref( pixbuf );
-               
-               // reference the image in the producer
-               free( this->image );
-               this->image = image;
        }
 
        // Set width/height
@@ -314,7 +343,8 @@ static void refresh_image( mlt_frame frame, int width, int height )
        mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
 
        // pass the image data without destructor
-       mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * bpp, NULL, NULL );
+       mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * 2, NULL, NULL );
+       mlt_properties_set_data( properties, "alpha", this->alpha, this->width * this->height, NULL, NULL );
 }
 
 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
@@ -322,12 +352,15 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        // Obtain properties of frame
        mlt_properties properties = mlt_frame_properties( frame );
 
+       *width = mlt_properties_get_int( properties, "rescale_width" );
+       *height = mlt_properties_get_int( properties, "rescale_height" );
+
        // Refresh the image
        refresh_image( frame, *width, *height );
 
        // Determine format
-       mlt_producer this = mlt_properties_get_data( properties, "producer_pango", NULL );
-       *format = ( mlt_properties_get_int( mlt_producer_properties( this ), "bpp" ) == 4 ) ? mlt_image_rgb24a : mlt_image_rgb24;
+       //mlt_producer this = mlt_properties_get_data( properties, "producer_pango", NULL );
+       //*format = ( mlt_properties_get_int( mlt_producer_properties( this ), "bpp" ) == 4 ) ? mlt_image_rgb24a : mlt_image_rgb24;
 
        // May need to know the size of the image to clone it
        int size = 0;
@@ -343,15 +376,14 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        if ( writable )
        {
                // Clone our image
-               // IRRIGATE ME
-               uint8_t *copy = malloc( size );
+               uint8_t *copy = mlt_pool_alloc( size );
                memcpy( copy, image, size );
 
                // We're going to pass the copy on
                image = copy;
 
                // Now update properties so we free the copy after
-               mlt_properties_set_data( properties, "image", copy, size, free, NULL );
+               mlt_properties_set_data( properties, "image", copy, size, ( mlt_destructor )mlt_pool_release, NULL );
        }
 
        // Pass on the image
@@ -360,6 +392,15 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        return 0;
 }
 
+static uint8_t *producer_get_alpha_mask( mlt_frame this )
+{
+       // Obtain properties of frame
+       mlt_properties properties = mlt_frame_properties( this );
+
+       // Return the alpha mask
+       return mlt_properties_get_data( properties, "alpha", NULL );
+}
+
 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
 {
        producer_pango this = producer->child;
@@ -380,6 +421,9 @@ static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int i
        mlt_properties_set_int( properties, "progressive", 1 );
        mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( properties, "real_width" ) / mlt_properties_get_double( properties, "real_height" ) );
 
+       // Set alpha call back
+       ( *frame )->get_alpha_mask = producer_get_alpha_mask;
+
        // Stack the get image callback
        mlt_frame_push_get_image( *frame, producer_get_image );
 
@@ -395,7 +439,8 @@ static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int i
 static void producer_close( mlt_producer parent )
 {
        producer_pango this = parent->child;
-       free( this->image );
+       mlt_pool_release( this->image );
+       mlt_pool_release( this->alpha );
        free( this->fgcolor );
        free( this->bgcolor );
        free( this->markup );
@@ -459,10 +504,12 @@ static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const
        bitmap.width     = w;
        bitmap.pitch     = 32 * ( ( w + 31 ) / 31 );
        bitmap.rows      = h;
-       bitmap.buffer    = ( unsigned char * ) calloc( 1, h * bitmap.pitch );
+       bitmap.buffer    = mlt_pool_alloc( h * bitmap.pitch );
        bitmap.num_grays = 256;
        bitmap.pixel_mode = ft_pixel_mode_grays;
 
+       memset( bitmap.buffer, 0, h * bitmap.pitch );
+
        pango_ft2_render_layout( &bitmap, layout, 0, 0 );
 
        src = bitmap.buffer;
@@ -481,8 +528,7 @@ static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const
                }
                dest += stride;
        }
-       free( bitmap.buffer );
-
+       mlt_pool_release( bitmap.buffer );
        g_object_unref( layout );
        g_object_unref( context );
        g_object_unref( fontmap );