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Diffstat (limited to 'nuttx/graphics/nxglib/nxglib_bitblit.h')
| -rw-r--r-- | nuttx/graphics/nxglib/nxglib_bitblit.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/nuttx/graphics/nxglib/nxglib_bitblit.h b/nuttx/graphics/nxglib/nxglib_bitblit.h new file mode 100644 index 000000000..a737a0647 --- /dev/null +++ b/nuttx/graphics/nxglib/nxglib_bitblit.h @@ -0,0 +1,208 @@ +/**************************************************************************** + * graphics/nxglib/nxglib_bitblit.h + * + * Copyright (C) 2008-2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <nuttx/config.h> + +#include <stdint.h> + +#include <nuttx/nx/nxglib.h> + +/**************************************************************************** + * 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 + +/* 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 + +#elif NXGLIB_BITSPERPIXEL == 24 + +# define NXGL_SCALEX(x) (((x) << 1) + (x)) +# define NXGL_PIXEL_T uint32_t + +#elif NXGLIB_BITSPERPIXEL == 32 + +# define NXGL_SCALEX(x) ((x) << 2) +# define NXGL_PIXEL_T uint32_t + +#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++; \ + } \ + } +#else +# 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++; \ + } \ + } +#endif + +/* 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 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 */ |