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