--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hostsupport/hostopenvg/src/riUtils.cpp Wed Oct 06 17:59:01 2010 +0100
@@ -0,0 +1,240 @@
+/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and /or associated documentation files
+ * (the "Materials "), to deal in the Materials without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Materials,
+ * and to permit persons to whom the Materials are furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
+ * THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ */
+
+#ifndef __RIUTILS_H_
+# include "riUtils.h"
+#endif
+
+#include <string.h>
+
+namespace OpenVGRI
+{
+
+/**
+ * \brief Sets mem areas to byte(s) in c.
+ * \param dst Destination pointer.
+ * \param c Data to set into dst.
+ * \param nElements Amount of elements to set.
+ * \param nBytesPerElement Amount of bytes for each element.
+ * \note This is moslty an image-settings support function. It is assumed that several
+ * bytes / elements can be set at once, especially in 3-byte case.
+ */
+void riMemSet32(void* dst, RIuint32 c, size_t nElements, size_t nBytesPerElement)
+{
+ // \todo This function should be called from a function that handles npot element sizes.
+ // \todo Investigate the status of (open) std::fill implementations. Some of that code
+ // did not _seem_ to bundle sets or use SSE, etc.
+ // \todo Use SSE instructions on Intel?
+
+ RI_ASSERT(dst);
+ RI_ASSERT(nElements);
+
+ switch(nBytesPerElement)
+ {
+ case 4:
+ {
+ RIuint32* ptr = (RIuint32*)dst;
+ do {
+ *ptr++ = c;
+ } while(--nElements);
+ break;
+ }
+ case 3:
+ {
+ // \todo Endianness.
+ RIuint8* ptr = (RIuint8*)dst;
+ RIuint8 b[3];
+ b[0] = c & 0xff;
+ b[1] = (c >> 8)&0xff;
+ b[2] = (c >> 16)&0xff;
+ do {
+ *ptr++ = b[0];
+ *ptr++ = b[1];
+ *ptr++ = b[2];
+ } while(--nElements);
+ break;
+ }
+ case 2:
+ {
+ size_t dws = nElements / 2;
+ if (dws)
+ {
+ RIuint32* ptr32 = (RIuint32*)dst;
+ dst = (void*)(((RIuint8*)dst + dws * 4));
+ RIuint32 dw = c | (c<<16);
+ do {
+ *ptr32++ = dw;
+ } while(--dws);
+ nElements &= 0x01;
+ }
+ if (nElements)
+ {
+ RIuint16 *ptr16 = (RIuint16*)dst;
+ const RIuint16 w = (RIuint16)c;
+ do {
+ *ptr16++ = w;
+ } while(--nElements);
+ }
+ break;
+ }
+ default:
+ {
+ RI_ASSERT(nBytesPerElement == 1);
+ memset(dst, c, nElements);
+ break;
+ }
+ }
+
+}
+
+/**
+ * \brief Insert bits into an array of 32-bit integers.
+ * \param hashSize Size of array in bytes.
+ * \param bits Actual bits to insert.
+ * \param bitSize Amount of bits to insert (max 32).
+ * \param bitPtr Pointer to first bit to insert [0 .. (hashSize*8)-1]
+ */
+int riInsertBits32(RIuint32* hash, size_t hashSize, RIuint32 bits, RIuint32 bitSize, int bitPtr)
+{
+ RI_ASSERT(bitSize > 0 && bitSize <= 32);
+ RI_ASSERT(bits < (1u<<bitSize));
+ RI_ASSERT((bitPtr + bitSize) < (hashSize * 32));
+
+ int idw = bitPtr >> 5;
+ int ib = bitPtr - (idw << 5);
+
+ if ((ib + bitSize) > 32)
+ {
+ int rb = ((ib + bitSize) - 32) + 1;
+ RI_ASSERT(rb > 0);
+ hash[idw] |= (bits << ib);
+ hash[idw] |= (bits >> rb);
+ }
+ else
+ {
+ int new_ib = (ib + bitSize) & 0x1f;
+ RI_ASSERT((ib + bitSize == 32) ? new_ib == 0 : true);
+ hash[idw] |= (bits << ib);
+ }
+ return bitPtr + bitSize;
+}
+
+/**
+ * \brief Convert an image format to (internal) index.
+ */
+int riVGImageFormatToIndex(VGImageFormat format)
+{
+ switch(format)
+ {
+ /* RGB{A,X} channel ordering */
+ case VG_sRGBX_8888:
+ return 0;
+ case VG_sRGBA_8888:
+ return 1;
+ case VG_sRGBA_8888_PRE:
+ return 2;
+ case VG_sRGB_565:
+ return 3;
+ case VG_sRGBA_5551:
+ return 4;
+ case VG_sRGBA_4444:
+ return 5;
+ case VG_sL_8:
+ return 6;
+ case VG_lRGBX_8888:
+ return 7;
+ case VG_lRGBA_8888:
+ return 8;
+ case VG_lRGBA_8888_PRE:
+ return 9;
+ case VG_lL_8:
+ return 10;
+ case VG_A_8:
+ return 11;
+ case VG_BW_1:
+ return 12;
+ case VG_A_1:
+ return 13;
+ case VG_A_4:
+ return 14;
+
+ /* {A,X}RGB channel ordering */
+ case VG_sXRGB_8888:
+ return 15;
+ case VG_sARGB_8888:
+ return 16;
+ case VG_sARGB_8888_PRE:
+ return 17;
+ case VG_sARGB_1555:
+ return 18;
+ case VG_sARGB_4444:
+ return 19;
+ case VG_lXRGB_8888:
+ return 20;
+ case VG_lARGB_8888:
+ return 21;
+ case VG_lARGB_8888_PRE:
+ return 22;
+
+ /* BGR{A,X} channel ordering */
+ case VG_sBGRX_8888:
+ return 23;
+ case VG_sBGRA_8888:
+ return 24;
+ case VG_sBGRA_8888_PRE:
+ return 25;
+ case VG_sBGR_565:
+ return 26;
+ case VG_sBGRA_5551:
+ return 27;
+ case VG_sBGRA_4444:
+ return 28;
+ case VG_lBGRX_8888:
+ return 29;
+ case VG_lBGRA_8888:
+ return 30;
+ case VG_lBGRA_8888_PRE:
+ return 31;
+
+ /* {A,X}BGR channel ordering */
+ case VG_sXBGR_8888:
+ return 32;
+ case VG_sABGR_8888:
+ return 33;
+ case VG_sABGR_8888_PRE:
+ return 34;
+ case VG_sABGR_1555:
+ return 35;
+ case VG_sABGR_4444:
+ return 36;
+ case VG_lXBGR_8888:
+ return 37;
+ case VG_lABGR_8888:
+ return 38;
+ default:
+ RI_ASSERT(format == VG_lABGR_8888_PRE);
+ return 39;
+ }
+}
+
+}
+