X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Fgtk2%2Ffilter_rescale.c;h=774c0d682f515c6ac9b073cf5df2387a41c085d1;hb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;hp=5151a059b46043bfde9448721386842f0809421f;hpb=edfb53ebb1ce5b141e34b7feb7df7448cbc5be96;p=melted diff --git a/src/modules/gtk2/filter_rescale.c b/src/modules/gtk2/filter_rescale.c index 5151a05..774c0d6 100644 --- a/src/modules/gtk2/filter_rescale.c +++ b/src/modules/gtk2/filter_rescale.c @@ -3,51 +3,43 @@ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Dan Dennedy * - * 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 +#include #include #include #include #include - -/** 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 iformat, mlt_image_format oformat, 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 ) @@ -55,156 +47,89 @@ static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format * else if ( strcmp( interps, "hyper" ) == 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 + if ( iformat == mlt_image_yuv422 && oformat == mlt_image_yuv422 ) { - iwidth = mlt_properties_get_int( properties, "real_width" ); - iheight = mlt_properties_get_int( properties, "real_height" ); - } + // 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_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 ); - if ( input != NULL ) + // Return the output + *image = output; + } + else if ( iformat == mlt_image_rgb24 || iformat == mlt_image_rgb24a ) { - // If width and height are correct, don't do anything - if ( *format == mlt_image_yuv422 && strcmp( interps, "none" ) && ( iwidth != owidth || iheight != oheight ) ) + int bpp = (iformat == 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 ) ) { - // Create the output image - uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 ); + GdkPixbuf *pixbuf = gdk_pixbuf_new_from_data( *image, GDK_COLORSPACE_RGB, + ( iformat == mlt_image_rgb24a ), 8, iwidth, iheight, + iwidth * bpp, NULL, NULL ); - // Calculate strides - int istride = iwidth * 2; - int ostride = owidth * 2; + 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 ) ); - 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 ); + // 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 ); - // Return the output - *image = output; - } - else if ( *format == mlt_image_yuv422 && !strcmp( interps, "none" ) ) - { - // Do nothing - *width = iwidth; - *height = iheight; - *image = input; + 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( gdk_pixbuf_get_pixels( scaled ), owidth, oheight, gdk_pixbuf_get_rowstride( scaled ), output ); + } + g_object_unref( scaled ); } - else if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a ) + else { - 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 ) ) + // Extract YUV422 and alpha + if ( bpp == 4 ) { - 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 - { - // No alpha to extract - mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( scaled ), - owidth, oheight, - gdk_pixbuf_get_rowstride( scaled ), - output ); - } - g_object_unref( scaled ); + // Allocate the alpha mask + uint8_t *alpha = mlt_pool_alloc( owidth * ( oheight + 1 ) ); + + // Convert the image and extract alpha + mlt_convert_rgb24a_to_yuv422( *image, owidth, oheight, owidth * 4, output, alpha ); + + mlt_properties_set_data( properties, "alpha", alpha, owidth * ( oheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL ); } 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 ); - } + // No alpha to extract + mlt_convert_rgb24_to_yuv422( *image, owidth, oheight, owidth * 3, output ); } - - // 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 ); - - // Return the output - *format = mlt_image_yuv422; - *width = owidth; - *height = oheight; - *image = output; } - else - *image = input; - } - 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 ); -} + // 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 ); -/** Filter processing. -*/ + *image = output; + } -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. @@ -212,11 +137,22 @@ static mlt_frame filter_process( mlt_filter this, mlt_frame frame ) mlt_filter filter_rescale_init( char *arg ) { - mlt_filter this = mlt_filter_new( ); + // Create a new scaler + mlt_filter this = mlt_factory_filter( "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; } +