From 0656ff623ae406226308306079b56355662d58d4 Mon Sep 17 00:00:00 2001 From: patacongo Date: Wed, 26 Nov 2008 17:58:31 +0000 Subject: Adding bitblit functions git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1311 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/graphics/nxglib/nxglib_bitblit.h | 210 +++++++++++++++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 nuttx/graphics/nxglib/nxglib_bitblit.h (limited to 'nuttx/graphics/nxglib/nxglib_bitblit.h') diff --git a/nuttx/graphics/nxglib/nxglib_bitblit.h b/nuttx/graphics/nxglib/nxglib_bitblit.h new file mode 100644 index 000000000..6ebb97c2b --- /dev/null +++ b/nuttx/graphics/nxglib/nxglib_bitblit.h @@ -0,0 +1,210 @@ +/**************************************************************************** + * graphics/nxglib/nxglib_bitblit.h + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + * + ****************************************************************************/ + +#ifndef __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H +#define __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +#include + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/* Make sure the the bits-per-pixel value has been set by the includer of + * this header file. + */ + +#ifndef NXGLIB_BITSPERPIXEL +# error "NXGLIB_BITSPERPIXEL must be defined before including this header file" +#endif + +/* Set up bit blit macros for this BPP */ + +#if NXGLIB_BITSPERPIXEL == 1 + +# define NX_PIXELSHIFT 3 +# define NX_PIXELMASK 7 +# define NX_MULTIPIXEL(p) ((p) ? 0xff | 0x00) +# define NX_PIXEL_T ubyte + +#elif NXGLIB_BITSPERPIXEL == 2 + +# define NX_PIXELSHIFT 2 +# define NX_PIXELMASK 3 +# define NX_MULTIPIXEL(p) ((ubyte)(p) << 6 | (ubyte)(p) << 4 | (ubyte)(p) << 2 | (p)) +# define NX_PIXEL_T ubyte + +#elif NXGLIB_BITSPERPIXEL == 4 + +# define NX_PIXELSHIFT 1 +# define NX_PIXELMASK 1 +# define NX_MULTIPIXEL(p) ((ubyte)(p) << 4 | (p)) +# define NX_PIXEL_T ubyte + +#elif NXGLIB_BITSPERPIXEL == 8 + +# define NX_SCALEX(x) (x) +# define NX_PIXEL_T ubyte + +#elif NXGLIB_BITSPERPIXEL == 16 + +# define NX_SCALEX(x) ((x) << 1) +# define NX_PIXEL_T uint16 + +#elif NXGLIB_BITSPERPIXEL == 24 + +# define NX_SCALEX(x) (((x) << 1) + (x)) +# define NX_PIXEL_T uint32 + +#elif NXGLIB_BITSPERPIXEL == 32 + +# define NX_SCALEX(x) ((x) << 2) +# define NX_PIXEL_T uint32 + +#endif + +#if NXGLIB_BITSPERPIXEL < 8 +# define NX_SCALEX(x) ((x) >> NX_PIXELSHIFT) +# define NX_REMAINDERX(x) ((x) & NX_PIXELMASK) +# define NX_ALIGNDOWN(x) ((x) & ~NX_PIXELMASK) +# define NX_ALIGNUP(x) (((x) + NX_PIXELMASK) & ~NX_PIXELMASK) + +# ifdef CONFIG_NX_PACKEDMSFIRST +# define NX_MASKEDSRC1(s,r) ((s) & (((ubyte)0xff) >> (8 - ((r) << pixelshift)))) +# define NX_MASKEDVALUE1(s,r) ((s) & (((ubyte)0xff) << ((r) << NX_PIXELSHFIT))) +# define NX_MASKEDSRC2(s,r) ((s) & (((ubyte)0xff) >> ((r) << pixelshift))) +# define NX_MASKEDVALUE2(s,r) ((s) & (((ubyte)0xff) << (8 - ((r) << NX_PIXELSHFIT)))) +# else +# define NX_MASKEDSRC1(s,r) ((s) & (((ubyte)0xff) >> ((r) << pixelshift))) +# define NX_MASKEDVALUE1(s,r) ((s) & (((ubyte)0xff) << (8 - ((r) << NX_PIXELSHFIT)))) +# define NX_MASKEDSRC2(s,r) ((s) & (((ubyte)0xff) >> (8 - ((r) << pixelshift)))) +# define NX_MASKEDVALUE2(s,r) ((s) & (((ubyte)0xff) << ((r) << NX_PIXELSHFIT))) +# endif + +# define NXGL_MEMSET(dest,value,width) \ + { \ + FAR uybte *_ptr = (FAR ubyte*)dest; \ + int nbytes = NX_SCALEX(width)); \ + while (nbytes--) \ + { \ + *_ptr++ = value; \ + } \ + } +# define NXGL_MEMCPY(dest,src,width) \ + { \ + FAR ubyte *_dptr = (FAR ubyte*)dest; \ + FAR ubyte *_sptr = (FAR ubyte*)src; \ + int nbytes = NX_SCALEX(width)); \ + while (npixels--) \ + { \ + *_dptr++ = *_sptr++; \ + } \ + } + +#elif NXGLIB_BITSPERPIXEL == 24 +# define NXGL_MEMSET(dest,value,width) \ + { \ + FAR uybte *_ptr = (FAR ubyte*)dest; \ + while (width--) \ + { \ + *_ptr++ = value; \ + *_ptr++ = value >> 8; \ + *_ptr++ = value >> 16; \ + } \ + } +# define NXGL_MEMCPY(dest,src,width) \ + { \ + FAR ubyte *_dptr = (FAR ubyte*)dest; \ + FAR ubyte *_sptr = (FAR ubyte*)src; \ + while (width--) \ + { \ + *_dptr++ = *_sptr++; \ + *_dptr++ = *_sptr++; \ + *_dptr++ = *_sptr++; \ + } \ + } +#else +# define NXGL_MEMSET(dest,value,width) \ + { \ + FAR nx_pixel_t *_ptr = (FAR ubyte*)dest; \ + while (width--) \ + { \ + *_ptr++ = value; \ + } \ + } +# define NXGL_MEMCPY(dest,src,width) \ + { \ + FAR nx_pixel_t *_dptr = (FAR ubyte*)dest; \ + FAR nx_pixel_t *_sptr = (FAR ubyte*)src; \ + while (width--) \ + { \ + *_dptr++ = *_sptr++; \ + } \ + } +#endif + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H */ -- cgit v1.2.3