/**************************************************************************** * graphics/nxglib/nxglib_bitblit.h * * Copyright (C) 2008-2011, 2019 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 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 /* Anti-aliasing can only be supported for 16-, 24-, and 32-bit RGB types */ #if NXGLIB_BITSPERPIXEL < 16 # undef CONFIG_NX_ANTIALIASING #endif /* Set up bit blit macros for this BPP */ #if NXGLIB_BITSPERPIXEL == 1 # define NXGL_PIXELSHIFT 3 # define NXGL_PIXELMASK 7 # define NXGL_MULTIPIXEL(p) ((p) ? 0xff : 0x00) # define NXGL_PIXEL_T uint8_t #elif NXGLIB_BITSPERPIXEL == 2 # define NXGL_PIXELSHIFT 2 # define NXGL_PIXELMASK 3 # define NXGL_MULTIPIXEL(p) ((uint8_t)(p) << 6 | (uint8_t)(p) << 4 | (uint8_t)(p) << 2 | (p)) # define NXGL_PIXEL_T uint8_t #elif NXGLIB_BITSPERPIXEL == 4 # define NXGL_PIXELSHIFT 1 # define NXGL_PIXELMASK 1 # define NXGL_MULTIPIXEL(p) ((uint8_t)(p) << 4 | (p)) # define NXGL_PIXEL_T uint8_t #elif NXGLIB_BITSPERPIXEL == 8 # define NXGL_SCALEX(x) (x) # define NXGL_PIXEL_T uint8_t #elif NXGLIB_BITSPERPIXEL == 16 # define NXGL_SCALEX(x) ((x) << 1) # define NXGL_PIXEL_T uint16_t # define NXGL_BLENDER nxglib_rgb565_blend #elif NXGLIB_BITSPERPIXEL == 24 # define NXGL_SCALEX(x) (((x) << 1) + (x)) # define NXGL_PIXEL_T uint32_t # define NXGL_BLENDER nxglib_rgb24_blend #elif NXGLIB_BITSPERPIXEL == 32 # define NXGL_SCALEX(x) ((x) << 2) # define NXGL_PIXEL_T uint32_t # define NXGL_BLENDER nxglib_rgb24_blend #endif #if NXGLIB_BITSPERPIXEL < 8 # define NXGL_SCALEX(x) ((x) >> NXGL_PIXELSHIFT) # define NXGL_REMAINDERX(x) ((x) & NXGL_PIXELMASK) # define NXGL_ALIGNDOWN(x) ((x) & ~NXGL_PIXELMASK) # define NXGL_ALIGNUP(x) (((x) + NXGL_PIXELMASK) & ~NXGL_PIXELMASK) # define NXGL_MEMSET(dest,value,width) \ { \ FAR uint8_t *_ptr = (FAR uint8_t*)(dest); \ int _nby = NXGL_SCALEX(width); \ while (_nby--) \ { \ *_ptr++ = (value); \ } \ } # define NXGL_MEMCPY(dest,src,width) \ { \ FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \ FAR uint8_t *_sptr = (FAR uint8_t*)(src); \ int _nby = NXGL_SCALEX(width); \ while (_nby--) \ { \ *_dptr++ = *_sptr++; \ } \ } #elif NXGLIB_BITSPERPIXEL == 24 # define NXGL_MEMSET(dest,value,width) \ { \ FAR uint8_t *_ptr = (FAR uint8_t*)(dest); \ nxgl_coord_t _npix = (width); \ while (_npix--) \ { \ *_ptr++ = (value); \ *_ptr++ = (value) >> 8; \ *_ptr++ = (value) >> 16; \ } \ } # define NXGL_MEMCPY(dest,src,width) \ { \ FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \ FAR uint8_t *_sptr = (FAR uint8_t*)(src); \ nxgl_coord_t _npix = (width); \ while (_npix--) \ { \ *_dptr++ = *_sptr++; \ *_dptr++ = *_sptr++; \ *_dptr++ = *_sptr++; \ } \ } #ifdef CONFIG_NX_ANTIALIASING # define NXGL_BLEND(dest,color1,frac) \ { \ FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \ uint32_t color2; \ uint32_t blend; \ color2 = ((uint32_t)_dptr[0] << 16) | \ ((uint32_t)_dptr[1] << 8) | \ (uint32_t)_dptr[2]; \ blend = NXGL_BLENDER(color1, color2, frac); \ *_dptr++ = (blend >> 16) & 0xff; \ *_dptr++ = (blend >> 8) & 0xff; \ *_dptr++ = blend & 0xff; \ } #endif /* CONFIG_NX_ANTIALIASING */ #else /* NXGLIB_BITSPERPIXEL == 16 || NXGLIB_BITSPERPIXEL == 32 */ # define NXGL_MEMSET(dest,value,width) \ { \ FAR NXGL_PIXEL_T *_ptr = (FAR NXGL_PIXEL_T*)(dest); \ nxgl_coord_t _npix = (width); \ while (_npix--) \ { \ *_ptr++ = (value); \ } \ } # define NXGL_MEMCPY(dest,src,width) \ { \ FAR NXGL_PIXEL_T *_dptr = (FAR NXGL_PIXEL_T*)(dest); \ FAR NXGL_PIXEL_T *_sptr = (FAR NXGL_PIXEL_T*)(src); \ nxgl_coord_t _npix = (width); \ while (_npix--) \ { \ *_dptr++ = *_sptr++; \ } \ } #ifdef CONFIG_NX_ANTIALIASING # define NXGL_BLEND(dest,color1,frac) \ { \ FAR NXGL_PIXEL_T *_dptr = (FAR NXGL_PIXEL_T*)(dest); \ NXGL_PIXEL_T color2 = *_dptr; \ *_dptr = NXGL_BLENDER(color1, color2, frac); \ } #endif /* CONFIG_NX_ANTIALIASING */ #endif /* NXGLIB_BITSPERPIXEL */ /* Form a function name by concatenating two strings */ #define _NXGL_FUNCNAME(a,b) a ## b #define NXGL_FUNCNAME(a,b) _NXGL_FUNCNAME(a,b) /**************************************************************************** * 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 */