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196 lines
6.4 KiB
196 lines
6.4 KiB
/**************************************************************************** |
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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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