start moving everything to C

1 files changed, 0 insertions, 414 deletions

diff --git a/source/sdd1emu.cpp b/source/sdd1emu.cpp
deleted file mode 100644
index bc32b43..0000000
--- a/source/sdd1emu.cpp
+++ /dev/null
@@ -1,414 +0,0 @@
-/*******************************************************************************
-  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
- 
-  (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
-                            Jerremy Koot (jkoot@snes9x.com)
-
-  (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
-
-  (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
-                            funkyass (funkyass@spam.shaw.ca),
-                            Joel Yliluoma (http://iki.fi/bisqwit/)
-                            Kris Bleakley (codeviolation@hotmail.com),
-                            Matthew Kendora,
-                            Nach (n-a-c-h@users.sourceforge.net),
-                            Peter Bortas (peter@bortas.org) and
-                            zones (kasumitokoduck@yahoo.com)
-
-  C4 x86 assembler and some C emulation code
-  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
-                            _Demo_ (_demo_@zsnes.com), and Nach
-
-  C4 C++ code
-  (c) Copyright 2003 Brad Jorsch
-
-  DSP-1 emulator code
-  (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
-                            John Weidman, neviksti (neviksti@hotmail.com),
-                            Kris Bleakley, Andreas Naive
-
-  DSP-2 emulator code
-  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
-                     Lord Nightmare (lord_nightmare@users.sourceforge.net
-
-  OBC1 emulator code
-  (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
-                            Kris Bleakley
-  Ported from x86 assembler to C by sanmaiwashi
-
-  SPC7110 and RTC C++ emulator code
-  (c) Copyright 2002 Matthew Kendora with research by
-                     zsKnight, John Weidman, and Dark Force
-
-  S-DD1 C emulator code
-  (c) Copyright 2003 Brad Jorsch with research by
-                     Andreas Naive and John Weidman
- 
-  S-RTC C emulator code
-  (c) Copyright 2001 John Weidman
-  
-  ST010 C++ emulator code
-  (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
-
-  Super FX x86 assembler emulator code 
-  (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault 
-
-  Super FX C emulator code 
-  (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
-
-
-  SH assembler code partly based on x86 assembler code
-  (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) 
-
- 
-  Specific ports contains the works of other authors. See headers in
-  individual files.
- 
-  Snes9x homepage: http://www.snes9x.com
- 
-  Permission to use, copy, modify and distribute Snes9x in both binary and
-  source form, for non-commercial purposes, is hereby granted without fee,
-  providing that this license information and copyright notice appear with
-  all copies and any derived work.
- 
-  This software is provided 'as-is', without any express or implied
-  warranty. In no event shall the authors be held liable for any damages
-  arising from the use of this software.
- 
-  Snes9x is freeware for PERSONAL USE only. Commercial users should
-  seek permission of the copyright holders first. Commercial use includes
-  charging money for Snes9x or software derived from Snes9x.
- 
-  The copyright holders request that bug fixes and improvements to the code
-  should be forwarded to them so everyone can benefit from the modifications
-  in future versions.
- 
-  Super NES and Super Nintendo Entertainment System are trademarks of
-  Nintendo Co., Limited and its subsidiary companies.
-*******************************************************************************/
-/* S-DD1 decompressor
- *
- * Based on code and documentation by Andreas Naive, who deserves a great deal
- * of thanks and credit for figuring this out.
- *
- * Andreas says:
- * The author is greatly indebted with The Dumper, without whose help and 
- * patience providing him with real S-DD1 data the research had never been 
- * possible. He also wish to note that in the very beggining of his research,
- * Neviksti had done some steps in the right direction. By last, the author is
- * indirectly indebted to all the people that worked and contributed in the
- * S-DD1 issue in the past.
- */
-
-#include <string.h>
-#include "port.h"
-#include "sdd1emu.h"
-
-static int valid_bits;
-static uint16 in_stream;
-static uint8 *in_buf;
-static uint8 bit_ctr[8];
-static uint8 context_states[32];
-static int context_MPS[32];
-static int bitplane_type;
-static int high_context_bits;
-static int low_context_bits;
-static int prev_bits[8];
-
-static struct {
-    uint8 code_size;
-    uint8 MPS_next;
-    uint8 LPS_next;
-} evolution_table[] = {
-    /*  0 */ { 0,25,25},
-    /*  1 */ { 0, 2, 1},
-    /*  2 */ { 0, 3, 1},
-    /*  3 */ { 0, 4, 2},
-    /*  4 */ { 0, 5, 3},
-    /*  5 */ { 1, 6, 4},
-    /*  6 */ { 1, 7, 5},
-    /*  7 */ { 1, 8, 6},
-    /*  8 */ { 1, 9, 7},
-    /*  9 */ { 2,10, 8},
-    /* 10 */ { 2,11, 9},
-    /* 11 */ { 2,12,10},
-    /* 12 */ { 2,13,11},
-    /* 13 */ { 3,14,12},
-    /* 14 */ { 3,15,13},
-    /* 15 */ { 3,16,14},
-    /* 16 */ { 3,17,15},
-    /* 17 */ { 4,18,16},
-    /* 18 */ { 4,19,17},
-    /* 19 */ { 5,20,18},
-    /* 20 */ { 5,21,19},
-    /* 21 */ { 6,22,20},
-    /* 22 */ { 6,23,21},
-    /* 23 */ { 7,24,22},
-    /* 24 */ { 7,24,23},
-    /* 25 */ { 0,26, 1},
-    /* 26 */ { 1,27, 2},
-    /* 27 */ { 2,28, 4},
-    /* 28 */ { 3,29, 8},
-    /* 29 */ { 4,30,12},
-    /* 30 */ { 5,31,16},
-    /* 31 */ { 6,32,18},
-    /* 32 */ { 7,24,22}
-};
-
-static uint8 run_table[128] = {
-    128,  64,  96,  32, 112,  48,  80,  16, 120,  56,  88,  24, 104,  40,  72,
-      8, 124,  60,  92,  28, 108,  44,  76,  12, 116,  52,  84,  20, 100,  36,
-     68,   4, 126,  62,  94,  30, 110,  46,  78,  14, 118,  54,  86,  22, 102,
-     38,  70,   6, 122,  58,  90,  26, 106,  42,  74,  10, 114,  50,  82,  18,
-     98,  34,  66,   2, 127,  63,  95,  31, 111,  47,  79,  15, 119,  55,  87,
-     23, 103,  39,  71,   7, 123,  59,  91,  27, 107,  43,  75,  11, 115,  51,
-     83,  19,  99,  35,  67,   3, 125,  61,  93,  29, 109,  45,  77,  13, 117,
-     53,  85,  21, 101,  37,  69,   5, 121,  57,  89,  25, 105,  41,  73,   9,
-    113,  49,  81,  17,  97,  33,  65,   1
-};
-
-static inline uint8 GetCodeword(int bits){
-    uint8 tmp;
-
-    if(!valid_bits){
-        in_stream|=*(in_buf++);
-        valid_bits=8;
-    }
-    in_stream<<=1;
-    valid_bits--;
-    in_stream^=0x8000;
-    if(in_stream&0x8000) return 0x80+(1<<bits);
-    tmp=(in_stream>>8) | (0x7f>>bits);
-    in_stream<<=bits;
-    valid_bits-=bits;
-    if(valid_bits<0){
-        in_stream |= (*(in_buf++))<<(-valid_bits);
-        valid_bits+=8;
-    }
-    return run_table[tmp];
-}
-
-static inline uint8 GolombGetBit(int code_size){
-    if(!bit_ctr[code_size]) bit_ctr[code_size]=GetCodeword(code_size);
-    bit_ctr[code_size]--;
-    if(bit_ctr[code_size]==0x80){
-        bit_ctr[code_size]=0;
-        return 2; /* secret code for 'last zero'. ones are always last. */
-    }
-    return (bit_ctr[code_size]==0)?1:0;
-}
-
-static inline uint8 ProbGetBit(uint8 context){
-    uint8 state=context_states[context];
-    uint8 bit=GolombGetBit(evolution_table[state].code_size);
-
-    if(bit&1){
-        context_states[context]=evolution_table[state].LPS_next;
-        if(state<2){
-            context_MPS[context]^=1;
-            return context_MPS[context]; /* just inverted, so just return it */
-        } else{
-            return context_MPS[context]^1; /* we know bit is 1, so use a constant */
-        }
-    } else if(bit){
-        context_states[context]=evolution_table[state].MPS_next;
-        /* zero here, zero there, no difference so drop through. */
-    }
-    return context_MPS[context]; /* we know bit is 0, so don't bother xoring */
-}
-
-static inline uint8 GetBit(uint8 cur_bitplane){
-    uint8 bit;
-    
-    bit=ProbGetBit(((cur_bitplane&1)<<4)
-                   | ((prev_bits[cur_bitplane]&high_context_bits)>>5)
-                   | (prev_bits[cur_bitplane]&low_context_bits));
-
-    prev_bits[cur_bitplane] <<= 1;
-    prev_bits[cur_bitplane] |= bit;
-    return bit;
-}
-
-void SDD1_decompress(uint8 *out, uint8 *in, int len){
-    uint8 bit, i, plane;
-    uint8 byte1, byte2;
-
-    if(len==0) len=0x10000;
-    
-    bitplane_type=in[0]>>6;
-
-    switch(in[0]&0x30){
-      case 0x00:
-        high_context_bits=0x01c0;
-        low_context_bits =0x0001;
-        break;
-      case 0x10:
-        high_context_bits=0x0180;
-        low_context_bits =0x0001;
-        break;
-      case 0x20:
-        high_context_bits=0x00c0;
-        low_context_bits =0x0001;
-        break;
-      case 0x30:
-        high_context_bits=0x0180;
-        low_context_bits =0x0003;
-        break;
-    }
-
-    in_stream=(in[0]<<11) | (in[1]<<3);
-    valid_bits=5;
-    in_buf=in+2;
-    memset(bit_ctr, 0, sizeof(bit_ctr));
-    memset(context_states, 0, sizeof(context_states));
-    memset(context_MPS, 0, sizeof(context_MPS));
-    memset(prev_bits, 0, sizeof(prev_bits));
-
-    switch(bitplane_type){
-      case 0:
-        while(1) {
-            for(byte1=byte2=0, bit=0x80; bit; bit>>=1){
-                if(GetBit(0)) byte1 |= bit;
-                if(GetBit(1)) byte2 |= bit;
-            }
-            *(out++)=byte1;
-            if(!--len) return;
-            *(out++)=byte2;
-            if(!--len) return;
-        }
-        break;
-      case 1:
-        i=plane=0;
-        while(1) {
-            for(byte1=byte2=0, bit=0x80; bit; bit>>=1){
-                if(GetBit(plane)) byte1 |= bit;
-                if(GetBit(plane+1)) byte2 |= bit;
-            }
-            *(out++)=byte1;
-            if(!--len) return;
-            *(out++)=byte2;
-            if(!--len) return;
-            if(!(i+=32)) plane = (plane+2)&7;
-        }
-        break;
-      case 2:
-        i=plane=0;
-        while(1) {
-            for(byte1=byte2=0, bit=0x80; bit; bit>>=1){
-                if(GetBit(plane)) byte1 |= bit;
-                if(GetBit(plane+1)) byte2 |= bit;
-            }
-            *(out++)=byte1;
-            if(!--len) return;
-            *(out++)=byte2;
-            if(!--len) return;
-            if(!(i+=32)) plane ^= 2;
-        }
-        break;
-      case 3:
-        do {
-            for(byte1=plane=0, bit=1; bit; bit<<=1, plane++){
-                if(GetBit(plane)) byte1 |= bit;
-            }
-            *(out++)=byte1;
-        } while(--len);
-        break;
-    }
-}
-
-static uint8 cur_plane;
-static uint8 num_bits;
-static uint8 next_byte;
-
-void SDD1_init(uint8 *in){
-    bitplane_type=in[0]>>6;
-
-    switch(in[0]&0x30){
-      case 0x00:
-        high_context_bits=0x01c0;
-        low_context_bits =0x0001;
-        break;
-      case 0x10:
-        high_context_bits=0x0180;
-        low_context_bits =0x0001;
-        break;
-      case 0x20:
-        high_context_bits=0x00c0;
-        low_context_bits =0x0001;
-        break;
-      case 0x30:
-        high_context_bits=0x0180;
-        low_context_bits =0x0003;
-        break;
-    }
-
-    in_stream=(in[0]<<11) | (in[1]<<3);
-    valid_bits=5;
-    in_buf=in+2;
-    memset(bit_ctr, 0, sizeof(bit_ctr));
-    memset(context_states, 0, sizeof(context_states));
-    memset(context_MPS, 0, sizeof(context_MPS));
-    memset(prev_bits, 0, sizeof(prev_bits));
-
-    cur_plane=0;
-    num_bits=0;
-}
-
-uint8 SDD1_get_byte(void){
-    uint8 bit;
-    uint8 byte=0;
-    
-    switch(bitplane_type){
-      case 0:
-        num_bits+=16;
-        if(num_bits&16){
-            next_byte=0;
-            for(bit=0x80; bit; bit>>=1){
-                if(GetBit(0)) byte |= bit;
-                if(GetBit(1)) next_byte |= bit;
-            }
-            return byte;
-        } else {
-            return next_byte;
-        }
-
-      case 1:
-        num_bits+=16;
-        if(num_bits&16){
-            next_byte=0;
-            for(bit=0x80; bit; bit>>=1){
-                if(GetBit(cur_plane)) byte |= bit;
-                if(GetBit(cur_plane+1)) next_byte |= bit;
-            }
-            return byte;
-        } else {
-            if(!num_bits) cur_plane = (cur_plane+2)&7;
-            return next_byte;
-        }
-
-      case 2:
-        num_bits+=16;
-        if(num_bits&16){
-            next_byte=0;
-            for(bit=0x80; bit; bit>>=1){
-                if(GetBit(cur_plane)) byte |= bit;
-                if(GetBit(cur_plane+1)) next_byte |= bit;
-            }
-            return byte;
-        } else {
-            if(!num_bits) cur_plane ^= 2;
-            return next_byte;
-        }
-
-      case 3:
-        for(cur_plane=0, bit=1; bit; bit<<=1, cur_plane++){
-            if(GetBit(cur_plane)) byte |= bit;
-        }
-        return byte;
-
-      default:
-        /* should never happen */
-        return 0;
-    }
-}
-