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Diffstat (limited to 'include/gmisc/gmisc.h')
| -rw-r--r-- | include/gmisc/gmisc.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/gmisc/gmisc.h b/include/gmisc/gmisc.h new file mode 100644 index 00000000..c68e5ca2 --- /dev/null +++ b/include/gmisc/gmisc.h @@ -0,0 +1,106 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2012
+ Joel Bodenmann aka Tectu <joel@unormal.org>
+
+ This file is part of ChibiOS/GFX.
+
+ ChibiOS/GFX is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/GFX is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @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
+ */
+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 */
+/** @} */
+
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