211 lines
6.7 KiB
C
211 lines
6.7 KiB
C
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/****************************************************************************
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* graphics/nxglib/nxglib_bitblit.h
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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 <sys/types.h>
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#include <nuttx/nxglib.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Make sure the 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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/* Set up bit blit macros for this BPP */
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#if NXGLIB_BITSPERPIXEL == 1
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# define NX_PIXELSHIFT 3
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# define NX_PIXELMASK 7
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# define NX_MULTIPIXEL(p) ((p) ? 0xff | 0x00)
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# define NX_PIXEL_T ubyte
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#elif NXGLIB_BITSPERPIXEL == 2
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# define NX_PIXELSHIFT 2
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# define NX_PIXELMASK 3
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# define NX_MULTIPIXEL(p) ((ubyte)(p) << 6 | (ubyte)(p) << 4 | (ubyte)(p) << 2 | (p))
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# define NX_PIXEL_T ubyte
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#elif NXGLIB_BITSPERPIXEL == 4
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# define NX_PIXELSHIFT 1
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# define NX_PIXELMASK 1
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# define NX_MULTIPIXEL(p) ((ubyte)(p) << 4 | (p))
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# define NX_PIXEL_T ubyte
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#elif NXGLIB_BITSPERPIXEL == 8
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# define NX_SCALEX(x) (x)
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# define NX_PIXEL_T ubyte
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#elif NXGLIB_BITSPERPIXEL == 16
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# define NX_SCALEX(x) ((x) << 1)
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# define NX_PIXEL_T uint16
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#elif NXGLIB_BITSPERPIXEL == 24
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# define NX_SCALEX(x) (((x) << 1) + (x))
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# define NX_PIXEL_T uint32
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#elif NXGLIB_BITSPERPIXEL == 32
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# define NX_SCALEX(x) ((x) << 2)
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# define NX_PIXEL_T uint32
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#endif
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#if NXGLIB_BITSPERPIXEL < 8
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# define NX_SCALEX(x) ((x) >> NX_PIXELSHIFT)
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# define NX_REMAINDERX(x) ((x) & NX_PIXELMASK)
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# define NX_ALIGNDOWN(x) ((x) & ~NX_PIXELMASK)
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# define NX_ALIGNUP(x) (((x) + NX_PIXELMASK) & ~NX_PIXELMASK)
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# ifdef CONFIG_NX_PACKEDMSFIRST
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# define NX_MASKEDSRC1(s,r) ((s) & (((ubyte)0xff) >> (8 - ((r) << pixelshift))))
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# define NX_MASKEDVALUE1(s,r) ((s) & (((ubyte)0xff) << ((r) << NX_PIXELSHFIT)))
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# define NX_MASKEDSRC2(s,r) ((s) & (((ubyte)0xff) >> ((r) << pixelshift)))
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# define NX_MASKEDVALUE2(s,r) ((s) & (((ubyte)0xff) << (8 - ((r) << NX_PIXELSHFIT))))
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# else
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# define NX_MASKEDSRC1(s,r) ((s) & (((ubyte)0xff) >> ((r) << pixelshift)))
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# define NX_MASKEDVALUE1(s,r) ((s) & (((ubyte)0xff) << (8 - ((r) << NX_PIXELSHFIT))))
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# define NX_MASKEDSRC2(s,r) ((s) & (((ubyte)0xff) >> (8 - ((r) << pixelshift))))
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# define NX_MASKEDVALUE2(s,r) ((s) & (((ubyte)0xff) << ((r) << NX_PIXELSHFIT)))
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# endif
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# define NXGL_MEMSET(dest,value,width) \
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{ \
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FAR uybte *_ptr = (FAR ubyte*)dest; \
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int nbytes = NX_SCALEX(width)); \
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while (nbytes--) \
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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 ubyte *_dptr = (FAR ubyte*)dest; \
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FAR ubyte *_sptr = (FAR ubyte*)src; \
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int nbytes = NX_SCALEX(width)); \
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while (npixels--) \
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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 uybte *_ptr = (FAR ubyte*)dest; \
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while (width--) \
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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 ubyte *_dptr = (FAR ubyte*)dest; \
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FAR ubyte *_sptr = (FAR ubyte*)src; \
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while (width--) \
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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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#else
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# define NXGL_MEMSET(dest,value,width) \
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{ \
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FAR nx_pixel_t *_ptr = (FAR ubyte*)dest; \
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while (width--) \
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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 nx_pixel_t *_dptr = (FAR ubyte*)dest; \
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FAR nx_pixel_t *_sptr = (FAR ubyte*)src; \
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while (width--) \
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{ \
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*_dptr++ = *_sptr++; \
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} \
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}
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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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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#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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