251 lines
7.4 KiB
C
251 lines
7.4 KiB
C
/****************************************************************************
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* graphics/nxglib/nxglib_bitblit.h
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*
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* Copyright (C) 2008-2011, 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H
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#define __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/nx/nxglib.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Make sure the bits-per-pixel value has been set by the includer of
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* this header file.
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*/
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#ifndef NXGLIB_BITSPERPIXEL
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# error "NXGLIB_BITSPERPIXEL must be defined before including this header file"
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#endif
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/* Anti-aliasing can only be supported for 16-, 24-, and 32-bit RGB types */
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#if NXGLIB_BITSPERPIXEL < 16
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# undef CONFIG_NX_ANTIALIASING
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#endif
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/* Set up bit blit macros for this BPP */
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#if NXGLIB_BITSPERPIXEL == 1
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# define NXGL_PIXELSHIFT 3
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# define NXGL_PIXELMASK 7
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# define NXGL_MULTIPIXEL(p) ((p) ? 0xff : 0x00)
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# define NXGL_PIXEL_T uint8_t
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#elif NXGLIB_BITSPERPIXEL == 2
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# define NXGL_PIXELSHIFT 2
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# define NXGL_PIXELMASK 3
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# define NXGL_MULTIPIXEL(p) ((uint8_t)(p) << 6 | (uint8_t)(p) << 4 | (uint8_t)(p) << 2 | (p))
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# define NXGL_PIXEL_T uint8_t
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#elif NXGLIB_BITSPERPIXEL == 4
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# define NXGL_PIXELSHIFT 1
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# define NXGL_PIXELMASK 1
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# define NXGL_MULTIPIXEL(p) ((uint8_t)(p) << 4 | (p))
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# define NXGL_PIXEL_T uint8_t
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#elif NXGLIB_BITSPERPIXEL == 8
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# define NXGL_SCALEX(x) (x)
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# define NXGL_PIXEL_T uint8_t
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#elif NXGLIB_BITSPERPIXEL == 16
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# define NXGL_SCALEX(x) ((x) << 1)
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# define NXGL_PIXEL_T uint16_t
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# define NXGL_BLENDER nxglib_rgb565_blend
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#elif NXGLIB_BITSPERPIXEL == 24
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# define NXGL_SCALEX(x) (((x) << 1) + (x))
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# define NXGL_PIXEL_T uint32_t
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# define NXGL_BLENDER nxglib_rgb24_blend
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#elif NXGLIB_BITSPERPIXEL == 32
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# define NXGL_SCALEX(x) ((x) << 2)
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# define NXGL_PIXEL_T uint32_t
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# define NXGL_BLENDER nxglib_rgb24_blend
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#endif
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#if NXGLIB_BITSPERPIXEL < 8
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# define NXGL_SCALEX(x) ((x) >> NXGL_PIXELSHIFT)
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# define NXGL_REMAINDERX(x) ((x) & NXGL_PIXELMASK)
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# define NXGL_ALIGNDOWN(x) ((x) & ~NXGL_PIXELMASK)
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# define NXGL_ALIGNUP(x) (((x) + NXGL_PIXELMASK) & ~NXGL_PIXELMASK)
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# define NXGL_MEMSET(dest,value,width) \
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{ \
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FAR uint8_t *_ptr = (FAR uint8_t*)(dest); \
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int _nby = NXGL_SCALEX(width); \
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while (_nby--) \
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{ \
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*_ptr++ = (value); \
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} \
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}
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# define NXGL_MEMCPY(dest,src,width) \
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{ \
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FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \
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FAR uint8_t *_sptr = (FAR uint8_t*)(src); \
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int _nby = NXGL_SCALEX(width); \
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while (_nby--) \
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{ \
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*_dptr++ = *_sptr++; \
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} \
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}
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#elif NXGLIB_BITSPERPIXEL == 24
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# define NXGL_MEMSET(dest,value,width) \
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{ \
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FAR uint8_t *_ptr = (FAR uint8_t*)(dest); \
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nxgl_coord_t _npix = (width); \
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while (_npix--) \
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{ \
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*_ptr++ = (value); \
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*_ptr++ = (value) >> 8; \
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*_ptr++ = (value) >> 16; \
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} \
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}
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# define NXGL_MEMCPY(dest,src,width) \
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{ \
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FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \
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FAR uint8_t *_sptr = (FAR uint8_t*)(src); \
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nxgl_coord_t _npix = (width); \
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while (_npix--) \
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{ \
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*_dptr++ = *_sptr++; \
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*_dptr++ = *_sptr++; \
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*_dptr++ = *_sptr++; \
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} \
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}
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#ifdef CONFIG_NX_ANTIALIASING
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# define NXGL_BLEND(dest,color1,frac) \
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{ \
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FAR uint8_t *_dptr = (FAR uint8_t*)(dest); \
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uint32_t color2; \
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uint32_t blend; \
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color2 = ((uint32_t)_dptr[0] << 16) | \
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((uint32_t)_dptr[1] << 8) | \
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(uint32_t)_dptr[2]; \
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blend = NXGL_BLENDER(color1, color2, frac); \
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*_dptr++ = (blend >> 16) & 0xff; \
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*_dptr++ = (blend >> 8) & 0xff; \
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*_dptr++ = blend & 0xff; \
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}
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#endif /* CONFIG_NX_ANTIALIASING */
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#else /* NXGLIB_BITSPERPIXEL == 16 || NXGLIB_BITSPERPIXEL == 32 */
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# define NXGL_MEMSET(dest,value,width) \
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{ \
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FAR NXGL_PIXEL_T *_ptr = (FAR NXGL_PIXEL_T*)(dest); \
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nxgl_coord_t _npix = (width); \
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while (_npix--) \
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{ \
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*_ptr++ = (value); \
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} \
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}
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# define NXGL_MEMCPY(dest,src,width) \
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{ \
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FAR NXGL_PIXEL_T *_dptr = (FAR NXGL_PIXEL_T*)(dest); \
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FAR NXGL_PIXEL_T *_sptr = (FAR NXGL_PIXEL_T*)(src); \
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nxgl_coord_t _npix = (width); \
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while (_npix--) \
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{ \
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*_dptr++ = *_sptr++; \
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} \
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}
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#ifdef CONFIG_NX_ANTIALIASING
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# define NXGL_BLEND(dest,color1,frac) \
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{ \
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FAR NXGL_PIXEL_T *_dptr = (FAR NXGL_PIXEL_T*)(dest); \
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NXGL_PIXEL_T color2 = *_dptr; \
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*_dptr = NXGL_BLENDER(color1, color2, frac); \
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}
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#endif /* CONFIG_NX_ANTIALIASING */
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#endif /* NXGLIB_BITSPERPIXEL */
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/* Form a function name by concatenating two strings */
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#define _NXGL_FUNCNAME(a,b) a ## b
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#define NXGL_FUNCNAME(a,b) _NXGL_FUNCNAME(a,b)
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __GRAPHICS_NXGLIB_NXGLIB_BITBLIT_H */
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