?? rgb.h
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/* ***** BEGIN LICENSE BLOCK *****
* Source last modified: $Id: rgb.h,v 1.2.42.1 2004/07/09 02:00:18 hubbe Exp $
*
* Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
*
* The contents of this file, and the files included with this file,
* are subject to the current version of the RealNetworks Public
* Source License (the "RPSL") available at
* http://www.helixcommunity.org/content/rpsl unless you have licensed
* the file under the current version of the RealNetworks Community
* Source License (the "RCSL") available at
* http://www.helixcommunity.org/content/rcsl, in which case the RCSL
* will apply. You may also obtain the license terms directly from
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* to this file, the RCSL. Please see the applicable RPSL or RCSL for
* the rights, obligations and limitations governing use of the
* contents of the file.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL") in which case the provisions of the GPL are applicable
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* the GPL. If you do not delete the provisions above, a recipient may
* use your version of this file under the terms of any one of the
* RPSL, the RCSL or the GPL.
*
* This file is part of the Helix DNA Technology. RealNetworks is the
* developer of the Original Code and owns the copyrights in the
* portions it created.
*
* This file, and the files included with this file, is distributed
* and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
* ENJOYMENT OR NON-INFRINGEMENT.
*
* Technology Compatibility Kit Test Suite(s) Location:
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* Contributor(s):
*
* ***** END LICENSE BLOCK ***** */
#ifndef __RGB_H__
#define __RGB_H__ 1
#ifdef __cplusplus
extern "C" {
#endif
#define I420_ID 0
#define YV12_ID 1
#define YUY2_ID 2
#define UYVY_ID 3
#define YUV_FORMATS 4
/*
* RGB formats supported:
*
* RGB32 - 32-bit 8:8:8 RGB
* BGR32 - 32-bit 8:8:8 RGB (R&B swapped)
* RGB24 - 24-bit 8:8:8 RGB
* RGB565 - 16-bit 5:6:5 RGB
* RGB555 - 16-bit 5:5:5 RGB
* RGB444 - 16-bit 4:4:4 RGB (embedded devices)
* RGB8 - 8-bit palettized RGB
*/
#define RGB32_ID 0
#define BGR32_ID 1
#define RGB24_ID 2
#define RGB565_ID 3
#define RGB555_ID 4
#define RGB444_ID 5
#define RGB8_ID 6
#define RGB_FORMATS 7
/*
* Generic format ID:
*/
#define ID(f) f##_ID
/*
* Bytes per pixel (bpp) constants:
*/
#define RGB32_BPP 4
#define BGR32_BPP 4
#define RGB24_BPP 3
#define RGB565_BPP 2
#define RGB555_BPP 2
#define RGB444_BPP 2
#define RGB8_BPP 1
/*
* Generic pixel depth:
*/
#define BPP(f) f##_BPP
/*
* Our internal RGB8 palette tables:
*/
#ifndef PAL_MAIN
#define PAL_EXTERN extern
#else
#define PAL_EXTERN /**/
#endif
PAL_EXTERN unsigned int palette[1U << 8]; /* input image palette */
PAL_EXTERN unsigned char pmap[1U << (4+4+4)]; /* output image palette map */ /* Flawfinder: ignore */
/*
* Some palette-related macros
*/
#if BYTE_ORDER == LITTLE_ENDIAN
#define PAL_GET_R(idx) *((unsigned char *)(palette+idx)+0)
#define PAL_GET_G(idx) *((unsigned char *)(palette+idx)+1)
#define PAL_GET_B(idx) *((unsigned char *)(palette+idx)+2)
#else /* BYTE_ORDER != LITTLE_ENDIAN */
#define PAL_GET_R(idx) *((unsigned char *)(palette+idx)+3)
#define PAL_GET_G(idx) *((unsigned char *)(palette+idx)+2)
#define PAL_GET_B(idx) *((unsigned char *)(palette+idx)+1)
#endif
#define PAL_SET(idx,r,g,b) palette[idx] = (r<<16) | (g<<8) | b
#define PMAP_GET(r,g,b) pmap[(((r)&0xF0)<<4) | ((g)&0xF0) | ((b)>>4)]
#define PMAP_SET(idx,r,g,b) pmap[(((r)&0xF0)<<4) | ((g)&0xF0) | ((b)>>4)] = idx
/*
* Internal pixel representations.
* We will use 3 different types of temporary pixel variables
* based on the following classification:
* 1. Pixels with power of 2-aligned depth and bit-packed RGB fields:
* RGB32,BGR32,RGB565,RGB555,RGB444 - use 1 full register to store RGB fields
* (we will use name RGBX for generalized macros dealing
* with these formats)
* 2. Pixels with misaligned depth:
* RGB24 - use 3 8-bit registers to store R,G,and B components
* 3. Paletized pixels:
* RGB8 - use 1 full register to store palette index
*/
#define RGBX_PIXEL(a) register unsigned int a##_rgb
#define RGB32_PIXEL(a) RGBX_PIXEL(a)
#define BGR32_PIXEL(a) RGBX_PIXEL(a)
#define RGB24_PIXEL(a) register unsigned char a##_b, a##_g, a##_r
#define RGB565_PIXEL(a) RGBX_PIXEL(a)
#define RGB555_PIXEL(a) RGBX_PIXEL(a)
#define RGB444_PIXEL(a) RGBX_PIXEL(a)
#define RGB8_PIXEL(a) register unsigned int a##_idx
/*
* Generic pixel declaration:
*/
#define PIXEL(f,a) f##_PIXEL(a)
/*
* Load/store/copy pixel macros:
* (s/d - source/destination pointers; sa/da - source/dest. pixel vars)
*/
#define RGBX_LOAD(s,a,t) a##_rgb=*(t*)(s)
#define RGBX_STORE(d,a,t) *(t*)(d)=a##_rgb
#define RGBX_COPY(da,sa) da##_rgb=sa##_rgb
#define RGB32_LOAD(s,a) RGBX_LOAD(s,a,unsigned int)
#define RGB32_STORE(d,a) RGBX_STORE(d,a,unsigned int)
#define RGB32_COPY(da,sa) RGBX_COPY(da,sa)
#define BGR32_LOAD(s,a) RGBX_LOAD(s,a,unsigned int)
#define BGR32_STORE(d,a) RGBX_STORE(d,a,unsigned int)
#define BGR32_COPY(da,sa) RGBX_COPY(da,sa)
#define RGB24_LOAD(s,a) a##_b=(s)[0], a##_g=(s)[1], a##_r=(s)[2]
#define RGB24_STORE(d,a) (d)[0]=a##_b, (d)[1]=a##_g, (d)[2]=a##_r
#define RGB24_COPY(da,sa) da##_b=sa##_b, da##_g=sa##_g, da##_r=sa##_r
#define RGB565_LOAD(s,a) RGBX_LOAD(s,a,unsigned short)
#define RGB565_STORE(d,a) RGBX_STORE(d,a,unsigned short)
#define RGB565_COPY(da,sa) RGBX_COPY(da,sa)
#define RGB555_LOAD(s,a) RGBX_LOAD(s,a,unsigned short)
#define RGB555_STORE(d,a) RGBX_STORE(d,a,unsigned short)
#define RGB555_COPY(da,sa) RGBX_COPY(da,sa)
#define RGB444_LOAD(s,a) RGBX_LOAD(s,a,unsigned short)
#define RGB444_STORE(d,a) RGBX_STORE(d,a,unsigned short)
#define RGB444_COPY(da,sa) RGBX_COPY(da,sa)
#define RGB8_LOAD(s,a) a##_idx=(s)[0]
#define RGB8_STORE(d,a) (d)[0]=a##_idx
#define RGB8_COPY(da,sa) da##_idx=sa##_idx
/*
* Generic pixel load/store/copy macros:
*/
#define LOAD(f,s,a) f##_LOAD(s,a)
#define STORE(f,d,a) f##_STORE(d,a)
#define COPY(f,da,sa) f##_COPY(da,sa)
/*
* R,G,B fields bit-packing:
* (RGB32,BGR32,RGB565,and RGB555 formats only)
*/
#define RGB32_A_START 24
#define RGB32_A_BITS 8
#define RGB32_R_START 16
#define RGB32_R_BITS 8
#define RGB32_G_START 8
#define RGB32_G_BITS 8
#define RGB32_B_START 0
#define RGB32_B_BITS 8
#define BGR32_R_START 0
#define BGR32_R_BITS 8
#define BGR32_G_START 8
#define BGR32_G_BITS 8
#define BGR32_B_START 16
#define BGR32_B_BITS 8
#define RGB565_R_START 11
#define RGB565_R_BITS 5
#define RGB565_G_START 5
#define RGB565_G_BITS 6
#define RGB565_B_START 0
#define RGB565_B_BITS 5
#define RGB555_R_START 10
#define RGB555_R_BITS 5
#define RGB555_G_START 5
#define RGB555_G_BITS 5
#define RGB555_B_START 0
#define RGB555_B_BITS 5
#define RGB444_R_START 8
#define RGB444_R_BITS 4
#define RGB444_G_START 4
#define RGB444_G_BITS 4
#define RGB444_B_START 0
#define RGB444_B_BITS 4
/*
* Generic bit-packing macros:
*/
#define START(f,x) f##_##x##_START
#define BITS(f,x) f##_##x##_BITS
/*
* Fields extraction/assignment macros.
*
* Here we will largely rely on compiler's ability to get rid of
* unexecuted branches and glue subsequent constant shifts and
* masks together. This assumption works well for MSVC, Watcom,
* and Zortech (Symantec) compilers, but some others may fail.
*
* If you are using compiler not listed above, please check the
* assembly output to make sure that the code is well optimized.
* If the compiler leaves comparisons and multiple shifts/masks
* in places of RGBX_GET_X() and RGBX_SET(), you would have to
* reimplement and optimize all these instances manually, using
* the appropriate pixel/field-type related constants.
*/
#define NORM(s) ((s) & 0x1F) /* shuts compiler up */
#define RGBX_GET_X(f,x,a) \
((START(f,x)+BITS(f,x)<8) \
? ((a##_rgb << NORM(8-(START(f,x)+BITS(f,x)))) & (0x100-(1U<<(8-BITS(f,x))))) \
: ((a##_rgb >> NORM((START(f,x)+BITS(f,x))-8)) & (0x100-(1U<<(8-BITS(f,x))))))
#define RGBX_X(f,x,v) \
((START(f,x)+BITS(f,x)<8) \
? (((v) & (0x100-(1U<<(8-BITS(f,x))))) >> NORM(8-(START(f,x)+BITS(f,x)))) \
: (((v) & (0x100-(1U<<(8-BITS(f,x))))) << NORM((START(f,x)+BITS(f,x))-8)))
#define RGBX_SET(f,a,r,g,b) \
a##_rgb = RGBX_X(f,R,r) | RGBX_X(f,G,g) | RGBX_X(f,B,b)
#define RGB32_GET_A(a) RGBX_GET_X(RGB32,A,a)
#define RGB32_GET_R(a) RGBX_GET_X(RGB32,R,a)
#define RGB32_GET_G(a) RGBX_GET_X(RGB32,G,a)
#define RGB32_GET_B(a) RGBX_GET_X(RGB32,B,a)
#define RGB32_SET(a,r,g,b) RGBX_SET( RGB32,a,r,g,b)
#define BGR32_GET_R(a) RGBX_GET_X(BGR32,R,a)
#define BGR32_GET_G(a) RGBX_GET_X(BGR32,G,a)
#define BGR32_GET_B(a) RGBX_GET_X(BGR32,B,a)
#define BGR32_SET(a,r,g,b) RGBX_SET( BGR32,a,r,g,b)
#define RGB24_GET_R(a) (a##_r)
#define RGB24_GET_G(a) (a##_g)
#define RGB24_GET_B(a) (a##_b)
#define RGB24_SET(a,r,g,b) a##_b=(b), a##_g=(g), a##_r=(r)
#define RGB565_GET_R(a) RGBX_GET_X(RGB565,R,a)
#define RGB565_GET_G(a) RGBX_GET_X(RGB565,G,a)
#define RGB565_GET_B(a) RGBX_GET_X(RGB565,B,a)
#define RGB565_SET(a,r,g,b) RGBX_SET( RGB565,a,r,g,b)
#define RGB555_GET_R(a) RGBX_GET_X(RGB555,R,a)
#define RGB555_GET_G(a) RGBX_GET_X(RGB555,G,a)
#define RGB555_GET_B(a) RGBX_GET_X(RGB555,B,a)
#define RGB555_SET(a,r,g,b) RGBX_SET( RGB555,a,r,g,b)
#define RGB444_GET_R(a) RGBX_GET_X(RGB444,R,a)
#define RGB444_GET_G(a) RGBX_GET_X(RGB444,G,a)
#define RGB444_GET_B(a) RGBX_GET_X(RGB444,B,a)
#define RGB444_SET(a,r,g,b) RGBX_SET( RGB444,a,r,g,b)
#define RGB8_GET_R(a) PAL_GET_R(a##_idx)
#define RGB8_GET_G(a) PAL_GET_G(a##_idx)
#define RGB8_GET_B(a) PAL_GET_B(a##_idx)
#define RGB8_SET(a,r,g,b) a##_idx=PMAP_GET(r,g,b)
/*
* Generic field extraction/assignment macros:
*/
#define GET_A(f,a) f##_GET_A(a)
#define GET_R(f,a) f##_GET_R(a)
#define GET_G(f,a) f##_GET_G(a)
#define GET_B(f,a) f##_GET_B(a)
#define SET(f,a,r,g,b) f##_SET(a,r,g,b)
/*
* Generic pixel-format converter:
* (sf/sa - source pixel format/name; df/da - dest. pixel format/name)
*/
#define CONVERT(df,da,sf,sa) SET(df,da,GET_R(sf,sa),GET_G(sf,sa),GET_B(sf,sa))
/*
* Generic pixel load and convert macro:
*/
#define LOAD_CONVERT(df,da,sf,s) \
/* do we have the same format? */ \
if (ID(df) == ID(sf)) { \
/* just load pixel */ \
LOAD(df,s,da); \
} else { \
/* load & convert pixel: */ \
PIXEL(sf,sa); \
LOAD(sf,s,sa); \
CONVERT(df,da,sf,sa); \
}
/*
* Get the average value of two pixels:
* (da=(sa+sb)/2)
*/
#define RGBX_AVERAGE(f,da,sa,sb) \
da##_rgb = (((sa##_rgb^sb##_rgb)>>1) \
& (((1U<<(START(f,R)+BITS(f,R)-1))-(1U<<START(f,R))) \
|((1U<<(START(f,G)+BITS(f,G)-1))-(1U<<START(f,G))) \
|((1U<<(START(f,B)+BITS(f,B)-1))-(1U<<START(f,B)))))\
+ (sa##_rgb&sb##_rgb)
#define RGB32_AVERAGE(da,sa,sb) RGBX_AVERAGE(RGB32,da,sa,sb)
#define BGR32_AVERAGE(da,sa,sb) RGBX_AVERAGE(BGR32,da,sa,sb)
#define RGB24_AVERAGE(da,sa,sb) \
SET(RGB24,da,((GET_R(RGB24,sa)+GET_R(RGB24,sb))>>1), \
((GET_G(RGB24,sa)+GET_G(RGB24,sb))>>1), \
((GET_B(RGB24,sa)+GET_B(RGB24,sb))>>1))
#define RGB565_AVERAGE(da,sa,sb) RGBX_AVERAGE(RGB565,da,sa,sb)
#define RGB555_AVERAGE(da,sa,sb) RGBX_AVERAGE(RGB555,da,sa,sb)
#define RGB444_AVERAGE(da,sa,sb) RGBX_AVERAGE(RGB444,da,sa,sb)
#define RGB8_AVERAGE(da,sa,sb) \
SET(RGB8,da,((GET_R(RGB8,sa)+GET_R(RGB8,sb))>>1), \
((GET_G(RGB8,sa)+GET_G(RGB8,sb))>>1), \
((GET_B(RGB8,sa)+GET_B(RGB8,sb))>>1))
/*
* Generic two pixels' average:
*/
#define AVERAGE(f,da,sa,sb) f##_AVERAGE(da,sa,sb)
/*
* Loads a pixel and averages it with another one:
* (da = (sa+[s])/2)
*/
#define LOAD_AVERAGE(f,da,sa,s) \
{ \
/* load & convert pixel: */ \
PIXEL(f,sb); \
LOAD(f,s,sb); \
AVERAGE(f,da,sa,sb); \
}
#ifdef __cplusplus
}
#endif
#endif /* __RGB_H__ */
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