--- /dev/null
+/******************************************************************************
+ * Arachnoid Graphics Plugin for Mupen64Plus
+ * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/
+ *
+ * Copyright (C) 2009 Jon Ring
+ * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef ASSEMBLER_H_
+#define ASSEMBLER_H_
+
+#ifndef WIN32
+#include <cstring>
+#endif
+// Swap bytes from 80 37 12 40
+// to 40 12 37 80
+// dwLen must be a multiple of 4
+inline void swapRomHeaderBytes(void *v, unsigned int dwLen)
+{
+ int *b = (int*)v;
+ dwLen /= 4;
+ for (unsigned int i = 0; i < dwLen; ++i)
+ {
+ int tmp = b[i];
+ b[i] = ((tmp & 0xff000000) >> 24) | ((tmp & 0x00ff0000) >> 8) | \
+ ((tmp & 0x0000ff00) << 8) | ((tmp & 0x000000ff) << 24);
+ }
+}
+
+
+inline unsigned short swapword( unsigned short value )
+{
+ return (value >> 8) | (value << 8);
+}
+
+inline void UnswapCopy( void *src, void *dest, unsigned int numBytes )
+{
+#ifdef WIN32_ASM
+ __asm
+ {
+ mov ecx, 0
+ mov esi, dword ptr [src]
+ mov edi, dword ptr [dest]
+
+ mov ebx, esi
+ and ebx, 3 // ebx = number of leading bytes
+
+ cmp ebx, 0
+ jz StartDWordLoop
+ neg ebx
+ add ebx, 4
+
+ cmp ebx, [numBytes]
+ jle NotGreater
+ mov ebx, [numBytes]
+NotGreater:
+ mov ecx, ebx
+ xor esi, 3
+LeadingLoop: // Copies leading bytes, in reverse order (un-swaps)
+ mov al, byte ptr [esi]
+ mov byte ptr [edi], al
+ sub esi, 1
+ add edi, 1
+ loop LeadingLoop
+ add esi, 5
+
+StartDWordLoop:
+ mov ecx, dword ptr [numBytes]
+ sub ecx, ebx // Don't copy what's already been copied
+
+ mov ebx, ecx
+ and ebx, 3
+// add ecx, 3 // Round up to nearest dword
+ shr ecx, 2
+
+ cmp ecx, 0 // If there's nothing to do, don't do it
+ jle StartTrailingLoop
+
+ // Copies from source to destination, bswap-ing first
+DWordLoop:
+ mov eax, dword ptr [esi]
+ bswap eax
+ mov dword ptr [edi], eax
+ add esi, 4
+ add edi, 4
+ loop DWordLoop
+StartTrailingLoop:
+ cmp ebx, 0
+ jz Done
+ mov ecx, ebx
+ xor esi, 3
+
+TrailingLoop:
+ mov al, byte ptr [esi]
+ mov byte ptr [edi], al
+ sub esi, 1
+ add edi, 1
+ loop TrailingLoop
+Done:
+ }
+#else
+
+ long long beginOffset = (long long)src & 3;
+ char *readPtr = (char*)src - beginOffset;
+ char *writePtr = (char*)dest;
+
+ int swapOffset = beginOffset;
+ for (unsigned int i = 0; i < numBytes; ++i)
+ {
+ *writePtr = readPtr[3 - swapOffset];
+ ++writePtr;
+ ++swapOffset;
+ if (swapOffset > 3)
+ {
+ swapOffset = 0;
+ readPtr += 4;
+ }
+ }
+
+#endif
+}
+
+inline void DWordInterleave( void *mem, unsigned int numDWords )
+{
+#ifdef WIN32_ASM
+ __asm {
+ mov esi, dword ptr [mem]
+ mov edi, dword ptr [mem]
+ add edi, 4
+ mov ecx, dword ptr [numDWords]
+DWordInterleaveLoop:
+ mov eax, dword ptr [esi]
+ mov ebx, dword ptr [edi]
+ mov dword ptr [esi], ebx
+ mov dword ptr [edi], eax
+ add esi, 8
+ add edi, 8
+ loop DWordInterleaveLoop
+ }
+#else
+ int *m = (int*)mem;
+ for (unsigned int i = 0; i < numDWords; ++i)
+ {
+ int tmp = m[2 * i];
+ m[2 * i] = m[2 * i + 1];
+ m[2 * i + 1] = tmp;
+ }
+#endif
+}
+
+inline void QWordInterleave( void *mem, unsigned int numDWords )
+{
+#ifdef WIN32_ASM
+ __asm
+ {
+ // Interleave the line on the qword
+ mov esi, dword ptr [mem]
+ mov edi, dword ptr [mem]
+ add edi, 8
+ mov ecx, dword ptr [numDWords]
+ shr ecx, 1
+QWordInterleaveLoop:
+ mov eax, dword ptr [esi]
+ mov ebx, dword ptr [edi]
+ mov dword ptr [esi], ebx
+ mov dword ptr [edi], eax
+ add esi, 4
+ add edi, 4
+ mov eax, dword ptr [esi]
+ mov ebx, dword ptr [edi]
+ mov dword ptr [esi], ebx
+ mov dword ptr [edi], eax
+ add esi, 12
+ add edi, 12
+ loop QWordInterleaveLoop
+ }
+#else
+ long long *m = (long long*)mem;
+ for (unsigned int i = 0; i < numDWords / 2; ++i)
+ {
+ long long tmp = m[2 * i];
+ m[2 * i] = m[2 * i + 1];
+ m[2 * i + 1] = tmp;
+ }
+#endif
+}
+
+const unsigned char Five2Eight[32] =
+{
+ 0, // 00000 = 00000000
+ 8, // 00001 = 00001000
+ 16, // 00010 = 00010000
+ 25, // 00011 = 00011001
+ 33, // 00100 = 00100001
+ 41, // 00101 = 00101001
+ 49, // 00110 = 00110001
+ 58, // 00111 = 00111010
+ 66, // 01000 = 01000010
+ 74, // 01001 = 01001010
+ 82, // 01010 = 01010010
+ 90, // 01011 = 01011010
+ 99, // 01100 = 01100011
+ 107, // 01101 = 01101011
+ 115, // 01110 = 01110011
+ 123, // 01111 = 01111011
+ 132, // 10000 = 10000100
+ 140, // 10001 = 10001100
+ 148, // 10010 = 10010100
+ 156, // 10011 = 10011100
+ 165, // 10100 = 10100101
+ 173, // 10101 = 10101101
+ 181, // 10110 = 10110101
+ 189, // 10111 = 10111101
+ 197, // 11000 = 11000101
+ 206, // 11001 = 11001110
+ 214, // 11010 = 11010110
+ 222, // 11011 = 11011110
+ 230, // 11100 = 11100110
+ 239, // 11101 = 11101111
+ 247, // 11110 = 11110111
+ 255 // 11111 = 11111111
+};
+
+const unsigned char Four2Eight[16] =
+{
+ 0, // 0000 = 00000000
+ 17, // 0001 = 00010001
+ 34, // 0010 = 00100010
+ 51, // 0011 = 00110011
+ 68, // 0100 = 01000100
+ 85, // 0101 = 01010101
+ 102, // 0110 = 01100110
+ 119, // 0111 = 01110111
+ 136, // 1000 = 10001000
+ 153, // 1001 = 10011001
+ 170, // 1010 = 10101010
+ 187, // 1011 = 10111011
+ 204, // 1100 = 11001100
+ 221, // 1101 = 11011101
+ 238, // 1110 = 11101110
+ 255 // 1111 = 11111111
+};
+
+const unsigned char Three2Four[8] =
+{
+ 0, // 000 = 0000
+ 2, // 001 = 0010
+ 4, // 010 = 0100
+ 6, // 011 = 0110
+ 9, // 100 = 1001
+ 11, // 101 = 1011
+ 13, // 110 = 1101
+ 15, // 111 = 1111
+};
+
+const unsigned char Three2Eight[8] =
+{
+ 0, // 000 = 00000000
+ 36, // 001 = 00100100
+ 73, // 010 = 01001001
+ 109, // 011 = 01101101
+ 146, // 100 = 10010010
+ 182, // 101 = 10110110
+ 219, // 110 = 11011011
+ 255, // 111 = 11111111
+};
+const unsigned char Two2Eight[4] =
+{
+ 0, // 00 = 00000000
+ 85, // 01 = 01010101
+ 170, // 10 = 10101010
+ 255 // 11 = 11111111
+};
+
+const unsigned char One2Four[2] =
+{
+ 0, // 0 = 0000
+ 15, // 1 = 1111
+};
+
+const unsigned char One2Eight[2] =
+{
+ 0, // 0 = 00000000
+ 255, // 1 = 11111111
+};
+
+inline unsigned short RGBA8888_RGBA4444( unsigned int color )
+{
+ return ((color & 0xF0000000) >> 28) | ((color & 0x00F00000) >> 16) |
+ ((color & 0x0000F000) >> 4) | ((color & 0x000000F0) << 8);
+}
+
+inline unsigned int RGBA5551_RGBA8888( unsigned short color )
+{
+ int rgba;
+ char *p = (char*)&rgba;
+ color = (color >> 8) | (color << 8);
+ p[3] = One2Eight[color & 1];
+ p[2] = Five2Eight[color >> 1 & 0x1f];
+ p[1] = Five2Eight[color >> 6 & 0x1f];
+ p[0] = Five2Eight[color >> 11 & 0x1f];
+ return rgba;
+}
+
+// Just swaps the word
+inline unsigned short RGBA5551_RGBA5551( unsigned short color )
+{
+ return (color >> 8) | (color << 8);
+}
+
+inline unsigned int IA88_RGBA8888( unsigned short color )
+{
+ return (color & 0xFF) | ((color & 0xFF) << 8) | (color << 16);
+}
+
+inline unsigned short IA88_RGBA4444( unsigned short color )
+{
+ unsigned char b = color & 0xf0;
+ return (color >> 12) | b | (b << 4) | (b << 8);
+}
+
+inline unsigned short IA44_RGBA4444( unsigned char color )
+{
+ unsigned char b = color >> 4;
+ return color | (b << 8) | (b << 12);
+}
+
+inline unsigned int IA44_RGBA8888( unsigned char color )
+{
+ unsigned char b1 = color >> 4;
+ unsigned char b2 = color & 0x0f;
+ return b1 | (b1 << 4) | (b1 << 8) | (b1 << 12) | (b1 << 16) | (b1 << 20) | (b2 << 24) | (b2 << 28);
+}
+
+inline unsigned short IA31_RGBA4444( unsigned char color )
+{
+ unsigned char t = Three2Four[color >> 1];
+ return One2Four[color & 1] | (t << 4) | (t << 8) | (t << 12);
+}
+
+inline unsigned int IA31_RGBA8888( unsigned char color )
+{
+ unsigned char t = Three2Eight[color >> 1];
+ return t | (t << 8) | (t << 16) | (One2Eight[color & 1] << 24);
+}
+
+inline unsigned short I8_RGBA4444( unsigned char color )
+{
+ color &= 0xf0;
+ return (color >> 4) | color | (color << 4) | (color << 8);
+}
+
+inline unsigned int I8_RGBA8888( unsigned char color )
+{
+ return color | (color << 8) | (color << 16) | (color << 24);
+}
+
+inline unsigned short I4_RGBA4444( unsigned char color )
+{
+ color &= 0x0f;
+ return color | (color << 4) | (color << 8) | (color << 12);
+}
+
+inline unsigned int I4_RGBA8888( unsigned char color )
+{
+ unsigned char b = Four2Eight[color];
+ return b | (b << 8) | (b << 16) | (b << 24);
+}
+
+#endif
notaz.gp2x.de / mupen64plus-pandora.git / blobdiff