Rough file addition and cleanup. Not yet ready for use.

[melted] / src / modules / core / filter_gamma.c

diff --git a/src/modules/core/filter_gamma.c b/src/modules/core/filter_gamma.c
deleted file mode 100644 (file)
index e4fe15b..0000000
--- a/src/modules/core/filter_gamma.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * filter_gamma.c -- gamma filter
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
- *
- * 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 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
- * Lesser General Public License for more details.
- *
- * 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 <framework/mlt_filter.h>
-#include <framework/mlt_frame.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-
-/** Do it :-).
-*/
-
-static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
-{
-       int error = mlt_frame_get_image( this, image, format, width, height, 1 );
-
-       if ( error == 0 && *format == mlt_image_yuv422 )
-       {
-               // Get the gamma value
-               double gamma = mlt_properties_get_double( MLT_FRAME_PROPERTIES( this ), "gamma" );
-
-               if ( gamma != 1.0 )
-               {
-                       uint8_t *p = *image;
-                       uint8_t *q = *image + *width * *height * 2;
-
-                       // Calculate the look up table
-                       double exp = 1 / gamma;
-                       uint8_t lookup[ 256 ];
-                       int i;
-
-                       for( i = 0; i < 256; i ++ )
-                               lookup[ i ] = ( uint8_t )( pow( ( double )i / 255.0, exp ) * 255 );
-
-                       while ( p != q )
-                       {
-                               *p = lookup[ *p ];
-                               p += 2;
-                       }
-               }
-       }
-
-       return 0;
-}
-
-/** Filter processing.
-*/
-
-static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
-{
-       double gamma = mlt_properties_get_double( MLT_FILTER_PROPERTIES( this ), "gamma" );
-       gamma = gamma <= 0 ? 1 : gamma;
-       mlt_properties_set_double( MLT_FRAME_PROPERTIES( frame ), "gamma", gamma );
-       mlt_frame_push_get_image( frame, filter_get_image );
-       return frame;
-}
-
-/** Constructor for the filter.
-*/
-
-mlt_filter filter_gamma_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
-{
-       mlt_filter this = mlt_filter_new( );
-       if ( this != NULL )
-       {
-               this->process = filter_process;
-               mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "gamma", arg == NULL ? "1" : arg );
-       }
-       return this;
-}