/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboil.h>

#include <liboil/liboiltest.h>

#include "jpeg.h"

/**

 * oil_yuv2rgbx_u8:

 * @d_4xn:

 * @src1: Y component

 * @src2: U component

 * @src3: V component

 * @n:

 *

 * Converts YUV pixels to RGB pixels.  Each YUV component is in a

 * separate source array, and are combined and converted to RGB.

 *

 * This function should be replaced by one that makes sense.

 */

OIL_DEFINE_CLASS (yuv2rgbx_u8,

    "uint8_t *d_4xn, uint8_t *src1, uint8_t *src2, uint8_t *src3, int n");

/**

 * oil_yuv2rgbx_sub2_u8:

 * @d_4xn:

 * @src1: Y component

 * @src2: U component

 * @src3: V component

 * @n:

 *

 * Converts YUV pixels to RGB pixels.  Each YUV component is in a

 * separate source array, and are combined and converted to RGB.

 * The U and V arrays are subsampled by a factor of 2, so only

 * half of each array is used.

 *

 * This function should be replaced by one that makes sense.

 */

OIL_DEFINE_CLASS (yuv2rgbx_sub2_u8,

    "uint8_t *d_4xn, uint8_t *src1, uint8_t *src2, uint8_t *src3, int n");

/**

 * oil_yuv2rgbx_sub4_u8:

 * @d_4xn:

 * @src1: Y component

 * @src2: U component

 * @src3: V component

 * @n:

 *

 * Converts YUV pixels to RGB pixels.  Each YUV component is in a

 * separate source array, and are combined and converted to RGB.

 * The U and V arrays are subsampled by a factor of 4, so only

 * a quarter of each array is used.

 *

 * This function should be replaced by one that makes sense.

 */

OIL_DEFINE_CLASS (yuv2rgbx_sub4_u8,

    "uint8_t *d_4xn, uint8_t *src1, uint8_t *src2, uint8_t *src3, int n");

#define clamp(x,a,b) clamp_lower(clamp_upper(x,b),a)

#define clamp_lower(x,a) ((x<a)?(a):(x))

#define clamp_upper(x,b) ((x>b)?(b):(x))

/* from the JFIF spec */

#define YUV_TO_R(y,u,v) clamp((y) + 1.402*((v)-128),0,255)

#define YUV_TO_G(y,u,v) clamp((y) - 0.34414*((u)-128) - 0.71414*((v)-128),0,255)

#define YUV_TO_B(y,u,v) clamp((y) + 1.772*((u)-128),0,255)

#define YUV_TO_R_INT(y,u,v) clamp(((y)*256 + 358*((v)-128))>>8,0,255)

#define YUV_TO_G_INT(y,u,v) clamp(((y)*256 - 88*((u)-128) - 183*((v)-128))>>8,0,255)

#define YUV_TO_B_INT(y,u,v) clamp(((y)*256 + 454*((u)-128))>>8,0,255)

static void

yuv2rgbx_u8_ref (uint8_t *rgbp, uint8_t *yp, uint8_t *up, uint8_t *vp, int n)

{

	int i;

	for(i=0;i<n;i++){

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		up++;

		vp++;

	}

}

OIL_DEFINE_IMPL_REF (yuv2rgbx_u8_ref, yuv2rgbx_u8);

#ifdef ENABLE_BROKEN_IMPLS

static void

yuv2rgbx_u8_int (uint8_t *rgbp, uint8_t *yp, uint8_t *up, uint8_t *vp, int n)

{

	int i;

	for(i=0;i<n;i++){

		rgbp[0] = YUV_TO_R_INT(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G_INT(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B_INT(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		up++;

		vp++;

	}

}

OIL_DEFINE_IMPL (yuv2rgbx_u8_int, yuv2rgbx_u8);

#endif

static void

yuv2rgbx_sub2_u8_ref (uint8_t *rgbp, uint8_t *yp, uint8_t *up, uint8_t *vp, int n)

{

	int i;

	for(i=0;i<n/2;i++){

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		up++;

		vp++;

	}

}

OIL_DEFINE_IMPL_REF (yuv2rgbx_sub2_u8_ref, yuv2rgbx_sub2_u8);

static void

yuv2rgbx_sub4_u8_ref (uint8_t *rgbp, uint8_t *yp, uint8_t *up, uint8_t *vp, int n)

{

	int i;

	for(i=0;i<n/4;i++){

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		rgbp[0] = YUV_TO_R(yp[0], up[0], vp[0]);

		rgbp[1] = YUV_TO_G(yp[0], up[0], vp[0]);

		rgbp[2] = YUV_TO_B(yp[0], up[0], vp[0]);

		rgbp[3] = 0;

		rgbp+=4;

		yp++;

		up++;

		vp++;

	}

}

OIL_DEFINE_IMPL_REF (yuv2rgbx_sub4_u8_ref, yuv2rgbx_sub4_u8);

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_yuv2rgbx_u8() {

		return &_oil_function_class_yuv2rgbx_u8;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_yuv2rgbx_sub2_u8() {

		return &_oil_function_class_yuv2rgbx_sub2_u8;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_yuv2rgbx_sub4_u8() {

		return &_oil_function_class_yuv2rgbx_sub4_u8;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_yuv2rgbx_u8_ref() {

		return &_oil_function_impl_yuv2rgbx_u8_ref;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_yuv2rgbx_sub2_u8_ref() {

		return &_oil_function_impl_yuv2rgbx_sub2_u8_ref;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_yuv2rgbx_sub4_u8_ref() {

		return &_oil_function_impl_yuv2rgbx_sub4_u8_ref;

}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_yuv2rgbx_u8 ()	{

	oil_function_class_ptr_yuv2rgbx_u8 = __oil_function_class_yuv2rgbx_u8();

	return &oil_function_class_ptr_yuv2rgbx_u8->func;

	}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_yuv2rgbx_sub2_u8 ()	{

	oil_function_class_ptr_yuv2rgbx_sub2_u8 = __oil_function_class_yuv2rgbx_sub2_u8();

	return &oil_function_class_ptr_yuv2rgbx_sub2_u8->func;

	}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_yuv2rgbx_sub4_u8 ()	{

	oil_function_class_ptr_yuv2rgbx_sub4_u8 = __oil_function_class_yuv2rgbx_sub4_u8();

	return &oil_function_class_ptr_yuv2rgbx_sub4_u8->func;

	}

#endif