iul_spatial_dithering.h
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/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of MediaTek Inc. (C) 2007
*
* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/
/*****************************************************************************
*
* Filename:
* ---------
* iul_spatial_dithering.h
*
* Project:
* --------
* N/A
*
* Description:
* ------------
* Image Utility Library: Interface for spatial dithering
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
* Below this line, this part is controlled by ClearCase. DO NOT MODIFY!!
*------------------------------------------------------------------------------
* $Log$
*
* 11 23 2010 rey.su
* removed!
* .
*
* 11 02 2010 rey.su
* removed!
* .
*
* 10 26 2010 rey.su
* removed!
* .
*
* removed!
* removed!
* Add source key.
*
* removed!
* removed!
* Initial version.
*
*------------------------------------------------------------------------------
* Upper this line, this part is controlled by ClearCase. DO NOT MODIFY!!
*============================================================================
****************************************************************************/
#ifndef __IUL_SPATIAL_DITHERING_H__
#define __IUL_SPATIAL_DITHERING_H__
/**
* @brief Convert a RGB888 image to RGB565 with spatial dithering with source key.
* @param pSrc pointer to source image in RGB888 format (R is the most significant byte).
* @param pDst pointer to destination image in RGB565 format. must be 2-byte aligned.
* @param uWidth width of source image.
* @param uHeight height of source image.
* @param uDstPixelPitch pixel pitch of destination image.
* @param pSrcKeyColor pointer to source key color in RGB565 format.
* @remarks The source pixel pitch must be equal to width of the image.
*
*/
void iul_sd_rgb888_to_rgb565_srckey(unsigned char *pSrc, unsigned short *pDst,
unsigned int uWidth, unsigned int uHeight,
unsigned int uDstPixelPitch,
unsigned short *pSrcKeyColor);
/**
* @brief Convert a BGR888 image to RGB565 with spatial dithering and source key.
* @param pSrc pointer to source image in BGR888 format (B is the most significant byte).
* @param pDst pointer to destination image in RGB565 format. must be 2-byte aligned.
* @param uWidth width of source image.
* @param uHeight height of source image.
* @param uDstPixelPitch pixel pitch of destination image.
* @param pSrcKeyColor pointer to source key color in RGB565 format.
* @remarks The source pixel pitch must be equal to width of the image.
*
*/
void iul_sd_bgr888_to_rgb565_srckey(unsigned char *pSrc, unsigned short *pDst,
unsigned int uWidth, unsigned int uHeight,
unsigned int uDstPixelPitch,
unsigned short *pSrcKeyColor);
/**
* @brief Convert a RGB888 image to RGB565 with spatial dithering.
* @param pSrc pointer to source image in RGB888 format (R is the most significant byte).
* @param pDst pointer to destination image in RGB565 format. must be 2-byte aligned.
* @param uWidth width of source image.
* @param uHeight height of source image.
* @param uDstPixelPitch pixel pitch of destination image.
* @remarks The source pixel pitch must be equal to width of the image.
*
*/
void iul_sd_rgb888_to_rgb565(unsigned char *pSrc, unsigned short *pDst,
unsigned int uWidth, unsigned int uHeight,
unsigned int uDstPixelPitch);
/**
* @brief Convert a BGR888 image to RGB565 with spatial dithering.
* @param pSrc pointer to source image in BGR888 format (B is the most significant byte).
* @param pDst pointer to destination image in RGB565 format. must be 2-byte aligned.
* @param uWidth width of source image.
* @param uHeight height of source image.
* @param uDstPixelPitch pixel pitch of destination image.
* @remarks The source pixel pitch must be equal to width of the image.
*
*/
void iul_sd_bgr888_to_rgb565(unsigned char *pSrc, unsigned short *pDst,
unsigned int uWidth, unsigned int uHeight,
unsigned int uDstPixelPitch);
/**
* @brief Add 2 bits dithering for each components of a RGB888 image with source key.
* The postfix "ip" means it is an in-place function.
* @param pImg pointer to the image in RGB888 format (R is the most significant byte).
* @param uWidth width of the image.
* @param uHeight height of the image.
* @param uPixelPitch pixel pitch of the image.
* @param pSrcKeyColor pointer to source key color, assumed to be unsigned char [3]; if this parameter is NULL, source key will be disabled.
* @remarks This function is an in-place function, which means the processed data will be written back to the input buffer.
*
*/
void iul_sd_rgb888_2bits_dithering_ip_srckey(unsigned char *pImg,
unsigned int uWidth, unsigned int uHeight,
unsigned int uPixelPitch,
unsigned char *pSrcKeyColor);
/**
* @brief Add 2 bits dithering for each components of a BGR888 image with source key.
* The postfix "ip" means it is an in-place function.
* @param pImg pointer to the image in BGR888 format (B is the least significant byte).
* @param uWidth width of the image.
* @param uHeight height of the image.
* @param uPixelPitch pixel pitch of the image.
* @param pSrcKeyColor pointer to source key color, assumed to be unsigned char [3]; if this parameter is NULL, source key will be disabled.
* @remarks This function is an in-place function, which means the processed data will be written back to the input buffer.
*
*/
#define iul_sd_bgr888_2bits_dithering_ip_srckey iul_sd_rgb888_2bits_dithering_ip_srckey
/**
* @brief Add 2 bits dithering for each components of a RGB888 image.
* The postfix "ip" means it is an in-place function.
* @param pImg pointer to the image in RGB888 format (R is the most significant byte).
* @param uWidth width of the image.
* @param uHeight height of the image.
* @param uPixelPitch pixel pitch of the image.
* @param pSrcKeyColor pointer to source key color, assumed to be unsigned char [3]; if this parameter is NULL, source key will be disabled.
* @remarks This function is an in-place function, which means the processed data will be written back to the input buffer.
*
*/
void iul_sd_rgb888_2bits_dithering_ip(unsigned char *pImg,
unsigned int uWidth, unsigned int uHeight,
unsigned int uPixelPitch);
/**
* @brief Add 2 bits dithering for each components of a BGR888 image.
* The postfix "ip" means it is an in-place function.
* @param pImg pointer to the image in BGR888 format (B is the least significant byte).
* @param uWidth width of the image.
* @param uHeight height of the image.
* @param uPixelPitch pixel pitch of the image.
* @param pSrcKeyColor pointer to source key color, assumed to be unsigned char [3]; if this parameter is NULL, source key will be disabled.
* @remarks This function is an in-place function, which means the processed data will be written back to the input buffer.
*
*/
#define iul_sd_bgr888_2bits_dithering_ip iul_sd_rgb888_2bits_dithering_ip
#endif /// __IUL_SPATIAL_DITHERING_H__