大话西游2与梦幻西游的地图提取器(包含遮挡图),C++完整源码

/* * Cloud Wu's JPEG decoder * * 2000/3/4 第 1 版 * * 允许非赢利性质的自由使用, 但如果使用此代码的全部或部分 * 请署上 Cloud Wu (云风) * * 商业使用请向作者直接联系 * * www.codingnow.com * cloudwu@263.net * * MMX 版本 8x8 AAN IDCT * 本函数摘取修改自 developer.intel.com */ #define mmword dword #ifndef WORD #define WORD unsigned short #endif static __int64 x0005000200010001=0x0005000200010001; static __int64 x0040000000000000=0x40000000000000; static __int64 x5a825a825a825a82=0x5a825a825a825a82; // 23170 static __int64 x539f539f539f539f=0x539f539f539f539f; // 21407 static __int64 x4546454645464546=0x4546454645464546; // 17734 static __int64 x61f861f861f861f8=0x61f861f861f861f8; // 25080 static __int64 scratch1=0; static __int64 scratch3=0; static __int64 scratch5=0; static __int64 scratch7=0; static WORD preSC[64]={ 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 12873, 17855, 16819, 15137, 25746, 20228, 13933, 7103, 17734, 24598, 23170, 20853, 17734, 13933, 9597, 4892, 18081, 25080, 23624, 21261, 18081, 14206, 9785, 4988 }; __declspec( naked ) void jpeg_idct8x8aan (short *src_result) { __asm { push ebp lea ecx, [preSC] mov ebp, esp push esi mov esi, DWORD PTR [ebp+8] // source //slot // column 0: even part // use V4, V12, V0, V8 to produce V22..V25 movq mm0, mmword ptr [ecx+8*12] // maybe the first mul can be done together // with the dequantization in iHuff module ? //slot pmulhw mm0, mmword ptr [esi+8*12] // V12 //slot movq mm1, mmword ptr [ecx+8*4] //slot pmulhw mm1, mmword ptr [esi+8*4] // V4 //slot movq mm3, mmword ptr [ecx+8*0] psraw mm0, 1 // t64=t66 pmulhw mm3, mmword ptr [esi+8*0] // V0 //slot movq mm5, mmword ptr [ecx+8*8] // duplicate V4 movq mm2, mm1 // added 11/1/96 pmulhw mm5, mmword ptr [esi+8*8] // V8 psubsw mm1, mm0 // V16 pmulhw mm1, mmword ptr x5a825a825a825a82 // 23170 ->V18 paddsw mm2, mm0 // V17 movq mm0, mm2 // duplicate V17 psraw mm2, 1 // t75=t82 psraw mm0, 2 // t72 movq mm4, mm3 // duplicate V0 paddsw mm3, mm5 // V19 psubsw mm4, mm5 // V20 //mm5 free //moved from the block below movq mm7, mmword ptr [ecx+8*10] psraw mm3, 1 // t74=t81 movq mm6, mm3 // duplicate t74=t81 psraw mm4, 2 // t77=t79 psubsw mm1, mm0 // V21 // mm0 free paddsw mm3, mm2 // V22 movq mm5, mm1 // duplicate V21 paddsw mm1, mm4 // V23 movq mmword ptr [esi+8*4], mm3 // V22 psubsw mm4, mm5 // V24 // mm5 free movq mmword ptr [esi+8*12], mm1 // V23 psubsw mm6, mm2 // V25 // mm2 free movq mmword ptr [esi+8*0], mm4 // V24 //slot // keep mm6 alive all along the next block //movq mmword ptr [esi+8*8], mm6 // V25 // column 0: odd part // use V2, V6, V10, V14 to produce V31, V39, V40, V41 //moved above //movq mm7, mmword ptr [ecx+8*10] pmulhw mm7, mmword ptr [esi+8*10] // V10 //slot movq mm0, mmword ptr [ecx+8*6] //slot pmulhw mm0, mmword ptr [esi+8*6] // V6 //slot movq mm5, mmword ptr [ecx+8*2] movq mm3, mm7 // duplicate V10 pmulhw mm5, mmword ptr [esi+8*2] // V2 //slot movq mm4, mmword ptr [ecx+8*14] psubsw mm7, mm0 // V26 pmulhw mm4, mmword ptr [esi+8*14] // V14 paddsw mm3, mm0 // V29 // free mm0 movq mm1, mm7 // duplicate V26 psraw mm3, 1 // t91=t94 pmulhw mm7, mmword ptr x539f539f539f539f // V33 psraw mm1, 1 // t96 movq mm0, mm5 // duplicate V2 psraw mm4, 2 // t85=t87 paddsw mm5, mm4 // V27 psubsw mm0, mm4 // V28 // free mm4 movq mm2, mm0 // duplicate V28 psraw mm5, 1 // t90=t93 pmulhw mm0, mmword ptr x4546454645464546 // V35 psraw mm2, 1 // t97 movq mm4, mm5 // duplicate t90=t93 psubsw mm1, mm2 // V32 // free mm2 pmulhw mm1, mmword ptr x61f861f861f861f8 // V36 psllw mm7, 1 // t107 paddsw mm5, mm3 // V31 psubsw mm4, mm3 // V30 // free mm3 pmulhw mm4, mmword ptr x5a825a825a825a82 // V34 nop //slot psubsw mm0, mm1 // V38 psubsw mm1, mm7 // V37 // free mm7 psllw mm1, 1 // t114 //move from the next block movq mm3, mm6 // duplicate V25 //move from the next block movq mm7, mmword ptr [esi+8*4] // V22 psllw mm0, 1 // t110 psubsw mm0, mm5 // V39 (mm5 still needed for next block) psllw mm4, 2 // t112 //move from the next block movq mm2, mmword ptr [esi+8*12] // V23 psubsw mm4, mm0 // V40 paddsw mm1, mm4 // V41 // free mm0 //move from the next block psllw mm2, 1 // t117=t125 // column 0: output butterfly //move above //movq mm3, mm6 // duplicate V25 //movq mm7, mmword ptr [esi+8*4] // V22 //movq mm2, mmword ptr [esi+8*12] // V23 //psllw mm2, 1 // t117=t125 psubsw mm6, mm1 // tm6 paddsw mm3, mm1 // tm8 // free mm1 movq mm1, mm7 // duplicate V22 paddsw mm7, mm5 // tm0 movq mmword ptr [esi+8*8], mm3 // tm8 // free mm3 psubsw mm1, mm5 // tm14 // free mm5 movq mmword ptr [esi+8*6], mm6 // tm6 // free mm6 movq mm3, mm2 // duplicate t117=t125 movq mm6, mmword ptr [esi+8*0] // V24 paddsw mm2, mm0 // tm2 movq mmword ptr [esi+8*0], mm7 // tm0 // free mm7 psubsw mm3, mm0 // tm12 // free mm0 movq mmword ptr [esi+8*14], mm1 // tm14 // free mm1 psllw mm6, 1 // t119=t123 movq mmword ptr [esi+8*2], mm2 // tm2 // free mm2 movq mm0, mm6 // duplicate t119=t123 movq mmword ptr [esi+8*12], mm3 // tm12 // free mm3 paddsw mm6, mm4 // tm4 //moved from next block movq mm1, mmword ptr [ecx+8*5] psubsw mm0, mm4 // tm10 // free mm4 //moved from next block pmulhw mm1, mmword ptr [esi+8*5] // V5 //slot movq mmword ptr [esi+8*4], mm6 // tm4 // free mm6 //slot movq mmword ptr [esi+8*10], mm0 // tm10 // free mm0 //slot // column 1: even part // use V5, V13, V1, V9 to produce V56..V59 //moved to prev block //movq mm1, mmword ptr [ecx+8*5] //pmulhw mm1, mmword ptr [esi+8*5] // V5 movq mm7, mmword ptr [ecx+8*13] psllw mm1, 1 // t128=t130 pmulhw mm7, mmword ptr [esi+8*13] // V13 movq mm2, mm1 // duplicate t128=t130 movq mm3, mmword ptr [ecx+8*1] //slot pmulhw mm3, mmword ptr [esi+8*1] // V1 //slot movq mm5, mmword ptr [ecx+8*9] psubsw mm1, mm7 // V50 pmulhw mm5, mmword ptr [esi+8*9] // V9 paddsw mm2, mm7 // V51 pmulhw mm1, mmword ptr x5a825a825a825a82 // 23170 ->V52 movq mm6, mm2 // duplicate V51 psraw mm2, 1 // t138=t144 movq mm4, mm3 // duplicate V1 psraw mm6, 2 // t136 paddsw mm3, mm5 // V53 psubsw mm4, mm5 // V54 //mm5 free movq mm7, mm3 // duplicate V53 //moved from next block movq mm0, mmword ptr [ecx+8*11] psraw mm4, 1 // t140=t142 psubsw mm1, mm6 // V55 // mm6 free paddsw mm3, mm2 // V56 movq mm5, mm4 // duplicate t140=t142 paddsw mm4, mm1 // V57 movq mmword ptr [esi+8*5], mm3 // V56 psubsw mm5, mm1 // V58 // mm1 free movq mmword ptr [esi+8*13], mm4 // V57 psubsw mm7, mm2 // V59 // mm2 free movq mmword ptr [esi+8*9], mm5 // V58 //slot // keep mm7 alive all along the