gstreamer/ext/hermes/yuv2rgb.h

/*
 * Copyright (c) 1995 The Regents of the University of California.
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */

#ifndef __YUV2RGB_H__
#define __YUV2RGB_H__

#include <gst/gst.h>

typedef struct _GstColorSpaceYUVTables GstColorSpaceYUVTables;

struct _GstColorSpaceYUVTables {
  int gammaCorrectFlag;
  double gammaCorrect;
  int chromaCorrectFlag;
  double chromaCorrect;

  int *L_tab, *Cr_r_tab, *Cr_g_tab, *Cb_g_tab, *Cb_b_tab;

  /*
   *  We define tables that convert a color value between -256 and 512
   *  into the R, G and B parts of the pixel. The normal range is 0-255.
   **/

  long *r_2_pix;
  long *g_2_pix;
  long *b_2_pix;
};


typedef struct _GstColorSpaceConverter GstColorSpaceConverter;
typedef void (*GstColorSpaceConvertFunction) (GstColorSpaceConverter *space, guchar *src, guchar *dest);

struct _GstColorSpaceConverter {
  guint width;
  guint height;
  guint insize;
  guint outsize;
  /* private */
  GstColorSpaceYUVTables *color_tables;
  GstColorSpaceConvertFunction convert;
};


GstColorSpaceConverter* 	gst_colorspace_yuv2rgb_get_converter	(const GstCaps *from, const GstCaps *to);
#define 			gst_colorspace_convert(converter, src, dest) \
								(converter)->convert((converter), (src), (dest))
void 				gst_colorspace_converter_destroy	(GstColorSpaceConverter *space);

#endif