forked from Archive/PX4-Autopilot
197 lines
6.4 KiB
C
197 lines
6.4 KiB
C
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/****************************************************************************
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* graphics/nxglib/nxsglib_fullrun.h
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*
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* Copyright (C) 2010 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_FILLRUN_H
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#define __GRAPHICS_NXGLIB_NXGLIB_FILLRUN_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 <string.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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#if NXGLIB_BITSPERPIXEL < 16
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# define NXGLIB_RUNTYPE uint8_t
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#elif NXGLIB_BITSPERPIXEL == 16
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# define NXGLIB_RUNTYPE uint16_t
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#else
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# define NXGLIB_RUNTYPE uint32_t
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#if NXGLIB_BITSPERPIXEL == 2
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static uint8_t g_wide_2bpp[4] = { 0x00, 0x55, 0xaa, 0xff };
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxgl_fillrun_*bpp
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*
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* Description:
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* fill a run with the specified color.
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*
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****************************************************************************/
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#if NXGLIB_BITSPERPIXEL == 1
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static inline void nxgl_fillrun_1bpp(FAR uint8_t *run, nxgl_mxpixel_t color,
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size_t npixels)
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{
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/* Get the number of bytes to fill */
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unsigned int nbytes = (npixels + 7) >> 3;
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/* Get the value of the byte to fill */
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uint8_t wide = (color & 1) != 0 ? 0xff : 0x00;
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/* Fill the run with the color (it is okay to run a fractional byte over
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* the end)
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*/
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memset(run, wide, nbytes);
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}
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#elif NXGLIB_BITSPERPIXEL == 2
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static inline void nxgl_fillrun_2bpp(FAR uint8_t *run, nxgl_mxpixel_t color,
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size_t npixels)
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{
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/* Get the number of bytes to fill */
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unsigned int nbytes = (npixels + 3) >> 2;
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/* Get the value of the byte to fill */
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uint8_t wide = g_wide_2bpp[color & 3];
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/* Fill the run with the color (it is okay to run a fractional byte over
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* the end)
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*/
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memset(run, wide, nbytes);
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}
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#elif NXGLIB_BITSPERPIXEL == 4
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static inline void nxgl_fillrun_4bpp(FAR uint8_t *run, nxgl_mxpixel_t color,
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size_t npixels)
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{
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/* Get the number of bytes to fill */
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unsigned int nbytes = (npixels + 1) >> 1;
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/* Get the value of the byte to fill */
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uint8_t narrow = (uint8_t)color & 0x0f;
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uint8_t wide = narrow | (narrow << 4);
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/* Fill the run with the color (it is okay to run a fractional byte over
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* the end)
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*/
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memset(run, wide, nbytes);
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}
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#elif NXGLIB_BITSPERPIXEL == 8
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static inline void nxgl_fillrun_8bpp(FAR uint8_t *run, nxgl_mxpixel_t color,
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size_t npixels)
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{
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/* Fill the run with the color (it is okay to run a fractional byte overy the end */
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memset(run, color, npixels);
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}
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#elif NXGLIB_BITSPERPIXEL == 16
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static inline void nxgl_fillrun_16bpp(FAR uint16_t *run, nxgl_mxpixel_t color,
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size_t npixels)
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{
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/* Fill the run with the color (it is okay to run a fractional byte overy the end */
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while (npixels-- > 0)
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{
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*run++ = (uint16_t)color;
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}
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}
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#elif NXGLIB_BITSPERPIXEL == 24
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static inline void nxgl_fillrun_24bpp(FAR uint32_t *run, nxgl_mxpixel_t color, size_t npixels)
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{
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/* Fill the run with the color (it is okay to run a fractional byte overy the end */
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#warning "Assuming 24-bit color is not packed"
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while (npixels-- > 0)
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{
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*run++ = (uint32_t)color;
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}
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}
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#elif NXGLIB_BITSPERPIXEL == 32
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static inline void nxgl_fillrun_32bpp(FAR uint32_t *run, nxgl_mxpixel_t color, size_t npixels)
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{
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/* Fill the run with the color (it is okay to run a fractional byte overy the end */
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while (npixels-- > 0)
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{
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*run++ = (uint32_t)color;
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}
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}
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#else
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# error "Unsupported value of NXGLIB_BITSPERPIXEL"
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#endif
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#endif /* __GRAPHICS_NXGLIB_NXGLIB_FILLRUN_H */
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