* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Dan Dennedy <dan@dennedy.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "filter_rescale.h"
#include "pixops.h"
+#include <framework/mlt_filter.h>
#include <framework/mlt_frame.h>
+#include <framework/mlt_factory.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
-
-/** Do it :-).
-*/
-
-static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
+static int filter_scale( mlt_frame this, uint8_t **image, mlt_image_format *format, int iwidth, int iheight, int owidth, int oheight )
{
- if ( *width == 0 )
- *width = 720;
- if ( *height == 0 )
- *height = 576;
-
- mlt_properties properties = mlt_frame_properties( this );
- int iwidth = *width;
- int iheight = *height;
- int owidth = *width;
- int oheight = *height;
- uint8_t *input = NULL;
+ // Get the properties
+ mlt_properties properties = MLT_FRAME_PROPERTIES( this );
+
+ // Get the requested interpolation method
char *interps = mlt_properties_get( properties, "rescale.interp" );
+
+ // Convert to the GTK flag
int interp = PIXOPS_INTERP_BILINEAR;
-
+
if ( strcmp( interps, "nearest" ) == 0 )
interp = PIXOPS_INTERP_NEAREST;
else if ( strcmp( interps, "tiles" ) == 0 )
interp = PIXOPS_INTERP_TILES;
- else if ( strcmp( interps, "hyper" ) == 0 )
+ else if ( strcmp( interps, "hyper" ) == 0 || strcmp( interps, "bicubic" ) == 0 )
interp = PIXOPS_INTERP_HYPER;
- // If real_width/height exist, we want that as minimum information
- if ( mlt_properties_get_int( properties, "real_width" ) )
+ // Carry out the rescaling
+ switch ( *format )
{
- iwidth = mlt_properties_get_int( properties, "real_width" );
- iheight = mlt_properties_get_int( properties, "real_height" );
- }
+ case mlt_image_yuv422:
+ {
+ // Create the output image
+ uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
- // Let the producer know what we are actually requested to obtain
- mlt_properties_set_int( properties, "rescale_width", *width );
- mlt_properties_set_int( properties, "rescale_height", *height );
+ // Calculate strides
+ int istride = iwidth * 2;
+ int ostride = owidth * 2;
- // Get the image as requested
- mlt_frame_get_image( this, &input, format, &iwidth, &iheight, writable );
+ yuv422_scale_simple( output, owidth, oheight, ostride, *image, iwidth, iheight, istride, interp );
+
+ // Now update the frame
+ mlt_frame_set_image( this, output, owidth * ( oheight + 1 ) * 2, mlt_pool_release );
- if ( input != NULL )
+ // Return the output
+ *image = output;
+ break;
+ }
+ case mlt_image_rgb24:
+ case mlt_image_rgb24a:
+ case mlt_image_opengl:
{
- // If width and height are correct, don't do anything
- if ( *format == mlt_image_yuv422 && strcmp( interps, "none" ) && ( iwidth != owidth || iheight != oheight ) )
- {
- // Create the output image
- uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
-
- // Calculate strides
- int istride = iwidth * 2;
- int ostride = owidth * 2;
+ int bpp = ( *format == mlt_image_rgb24 ? 3 : 4 );
- yuv422_scale_simple( output, owidth, oheight, ostride, input, iwidth, iheight, istride, interp );
-
- // Now update the frame
- mlt_properties_set_data( properties, "image", output, owidth * ( oheight + 1 ) * 2, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_int( properties, "width", owidth );
- mlt_properties_set_int( properties, "height", oheight );
+ // Create the output image
+ uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * bpp );
- // Return the output
- *image = output;
- }
- else if ( *format == mlt_image_yuv422 && !strcmp( interps, "none" ) )
- {
- // Do nothing
- *width = iwidth;
- *height = iheight;
- *image = input;
- }
- else if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a )
+ if ( strcmp( interps, "none" ) && ( iwidth != owidth || iheight != oheight ) )
{
- int bpp = (*format == mlt_image_rgb24a ? 4 : 3 );
-
- // Create the yuv image
- uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
-
- if ( strcmp( interps, "none" ) && ( iwidth != owidth || iheight != oheight ) )
+ GdkPixbuf *pixbuf = gdk_pixbuf_new_from_data( *image, GDK_COLORSPACE_RGB,
+ ( *format == mlt_image_rgb24a || *format == mlt_image_opengl ), 8, iwidth, iheight,
+ iwidth * bpp, NULL, NULL );
+ GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf, owidth, oheight, interp );
+ g_object_unref( pixbuf );
+
+ int src_stride = gdk_pixbuf_get_rowstride( scaled );
+ int dst_stride = owidth * bpp;
+ if ( src_stride != dst_stride )
{
- GdkPixbuf *pixbuf = gdk_pixbuf_new_from_data( input, GDK_COLORSPACE_RGB,
- ( *format == mlt_image_rgb24a ), 8, iwidth, iheight,
- iwidth * bpp, NULL, NULL );
-
- GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf, owidth, oheight, interp );
- g_object_unref( pixbuf );
-
- // Extract YUV422 and alpha
- if ( bpp == 4 )
- {
- // Allocate the alpha mask
- uint8_t *alpha = mlt_pool_alloc( owidth * ( oheight + 1 ) );
-
- // Convert the image and extract alpha
- mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( scaled ),
- owidth, oheight,
- gdk_pixbuf_get_rowstride( scaled ),
- output, alpha );
-
- mlt_properties_set_data( properties, "alpha", alpha, owidth * ( oheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL );
- }
- else
+ int y = oheight;
+ uint8_t *src = gdk_pixbuf_get_pixels( scaled );
+ uint8_t *dst = output;
+ while ( y-- )
{
- // No alpha to extract
- mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( scaled ),
- owidth, oheight,
- gdk_pixbuf_get_rowstride( scaled ),
- output );
+ memcpy( dst, src, dst_stride );
+ dst += dst_stride;
+ src += src_stride;
}
- g_object_unref( scaled );
}
else
{
- // Extract YUV422 and alpha
- if ( bpp == 4 )
- {
- // Allocate the alpha mask
- uint8_t *alpha = mlt_pool_alloc( owidth * ( oheight + 1 ) );
-
- // Convert the image and extract alpha
- mlt_convert_rgb24a_to_yuv422( input,
- owidth, oheight,
- owidth * 4,
- output, alpha );
-
- mlt_properties_set_data( properties, "alpha", alpha, owidth * ( oheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL );
- }
- else
- {
- // No alpha to extract
- mlt_convert_rgb24_to_yuv422( input,
- owidth, oheight,
- owidth * 3,
- output );
- }
+ memcpy( output, gdk_pixbuf_get_pixels( scaled ), owidth * oheight * bpp );
}
- // Now update the frame
- mlt_properties_set_data( properties, "image", output, owidth * ( oheight + 1 ) * 2, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_int( properties, "width", owidth );
- mlt_properties_set_int( properties, "height", oheight );
+ g_object_unref( scaled );
+ // Now update the frame
+ mlt_frame_set_image( this, output, owidth * ( oheight + 1 ) * bpp, mlt_pool_release );
+
// Return the output
- *format = mlt_image_yuv422;
- *width = owidth;
- *height = oheight;
*image = output;
}
- else
- *image = input;
+ break;
+ }
+ default:
+ break;
}
- else
- *image = input;
-
- 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 );
-}
-
-/** Filter processing.
-*/
-static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
-{
- mlt_frame_push_get_image( frame, filter_get_image );
- mlt_properties_set( mlt_frame_properties( frame ), "rescale.interp",
- mlt_properties_get( mlt_filter_properties( this ), "interpolation" ) );
-
- // Set alpha call back
- frame->get_alpha_mask = producer_get_alpha_mask;
- return frame;
+ return 0;
}
/** Constructor for the filter.
*/
-mlt_filter filter_rescale_init( char *arg )
+mlt_filter filter_rescale_init( mlt_profile profile, char *arg )
{
- mlt_filter this = mlt_filter_new( );
+ // Create a new scaler
+ mlt_filter this = mlt_factory_filter( profile, "rescale", arg );
+
+ // If successful, then initialise it
if ( this != NULL )
{
- this->process = filter_process;
- mlt_properties_set( mlt_filter_properties( this ), "interpolation", arg == NULL ? "bilinear" : arg );
+ // Get the properties
+ mlt_properties properties = MLT_FILTER_PROPERTIES( this );
+
+ // Set the inerpolation
+ mlt_properties_set( properties, "interpolation", arg == NULL ? "bilinear" : arg );
+
+ // Set the method
+ mlt_properties_set_data( properties, "method", filter_scale, 0, NULL, NULL );
}
+
return this;
}
+
projects / mlt / blobdiff