97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/*
|
|
* This file is subject to the terms of the GFX License, v1.0. If a copy of
|
|
* the license was not distributed with this file, you can obtain one at:
|
|
*
|
|
* http://chibios-gfx.com/license.html
|
|
*/
|
|
|
|
/**
|
|
* @file include/gmisc/gmisc.h
|
|
* @brief GMISC - Miscellaneous Routines header file.
|
|
*
|
|
* @addtogroup GAUDIN
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _GMISC_H
|
|
#define _GMISC_H
|
|
|
|
#include "gfx.h"
|
|
|
|
/*===========================================================================*/
|
|
/* Type definitions */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Sample data formats
|
|
* @note These are defined regardless of whether you use the GMISC module
|
|
* or not as they are used in lots of places.
|
|
*/
|
|
typedef enum ArrayDataFormat_e {
|
|
ARRAY_DATA_4BITUNSIGNED = 4, ARRAY_DATA_4BITSIGNED = 5,
|
|
ARRAY_DATA_8BITUNSIGNED = 8, ARRAY_DATA_8BITSIGNED = 9,
|
|
ARRAY_DATA_10BITUNSIGNED = 10, ARRAY_DATA_10BITSIGNED = 11,
|
|
ARRAY_DATA_12BITUNSIGNED = 12, ARRAY_DATA_12BITSIGNED = 13,
|
|
ARRAY_DATA_14BITUNSIGNED = 14, ARRAY_DATA_14BITSIGNED = 15,
|
|
ARRAY_DATA_16BITUNSIGNED = 16, ARRAY_DATA_16BITSIGNED = 17,
|
|
} ArrayDataFormat;
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#if GFX_USE_GMISC || defined(__DOXYGEN__)
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if GMISC_NEED_ARRAYOPS || defined(__DOXYGEN__)
|
|
/**
|
|
* @brief Convert from one array format to another array format.
|
|
*
|
|
* @param[in] srcfmt The format of the source array
|
|
* @param[in] src The source array
|
|
* @param[in] dstfmt The format of the destination array
|
|
* @param[in] dst The dstination array
|
|
* @param[in] cnt The number of array elements to convert
|
|
*
|
|
* @note Assumes the destination buffer is large enough for the resultant data.
|
|
* @note This routine is optimised to perform as fast as possible.
|
|
* @note No type checking is performed on the source format. It is assumed to
|
|
* have only valid values eg. ARRAY_DATA_4BITSIGNED will have values
|
|
* 0000 -> 0111 for positive numbers and 1111 -> 1000 for negative numbers
|
|
* Bits 5 -> 8 in the storage byte are treated in an undefined manner.
|
|
* @note If srcfmt or dstfmt is an unknown format, this routine does nothing
|
|
* with no warning that something is wrong
|
|
*
|
|
* @api
|
|
*/
|
|
void gmiscArrayConvert(ArrayDataFormat srcfmt, void *src, ArrayDataFormat dstfmt, void *dst, size_t cnt);
|
|
|
|
#if 0
|
|
void gmiscArrayTranslate(ArrayDataFormat fmt, void *src, void *dst, size_t cnt, int trans);
|
|
|
|
void gmiscArrayMultiply(ArrayDataFormat fmt, void *src, void *dst, size_t cnt, int mult);
|
|
|
|
void gmiscArrayDivide(ArrayDataFormat fmt, void *src, void *dst, size_t cnt, int mdiv);
|
|
|
|
void gmiscArrayMultDiv(ArrayDataFormat fmt, void *src, void *dst, size_t cnt, int mult, int div);
|
|
|
|
void gmiscArrayAdd(ArrayDataFormat fmt, void *src1, void *src2, void *dst, size_t cnt);
|
|
|
|
void gmiscArrayAddNoOverflow(ArrayDataFormat fmt, void *src1, void *src2, void *dst, size_t cnt);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* GFX_USE_MISC */
|
|
|
|
#endif /* _GMISC_H */
|
|
/** @} */
|
|
|