forked from dolphin-emu/dolphin
149 lines
3.7 KiB
C++
149 lines
3.7 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#ifndef _DATAREADER_H
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#define _DATAREADER_H
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extern u8* g_pVideoData;
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#if _M_SSE >= 0x301 && !(defined __GNUC__ && !defined __SSSE3__)
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#include <tmmintrin.h>
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#endif
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__forceinline void DataSkip(u32 skip)
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{
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g_pVideoData += skip;
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}
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// probably unnecessary
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template <int count>
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__forceinline void DataSkip()
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{
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g_pVideoData += count;
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}
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template <typename T>
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__forceinline T DataPeek(int _uOffset)
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{
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auto const result = Common::FromBigEndian(*reinterpret_cast<T*>(g_pVideoData + _uOffset));
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return result;
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}
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// TODO: kill these
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__forceinline u8 DataPeek8(int _uOffset)
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{
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return DataPeek<u8>(_uOffset);
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}
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__forceinline u16 DataPeek16(int _uOffset)
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{
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return DataPeek<u16>(_uOffset);
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}
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__forceinline u32 DataPeek32(int _uOffset)
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{
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return DataPeek<u32>(_uOffset);
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}
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template <typename T>
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__forceinline T DataRead()
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{
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auto const result = DataPeek<T>(0);
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DataSkip<sizeof(T)>();
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return result;
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}
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// TODO: kill these
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__forceinline u8 DataReadU8()
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{
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return DataRead<u8>();
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}
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__forceinline s8 DataReadS8()
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{
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return DataRead<s8>();
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}
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__forceinline u16 DataReadU16()
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{
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return DataRead<u16>();
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}
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__forceinline u32 DataReadU32()
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{
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return DataRead<u32>();
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}
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typedef void (*DataReadU32xNfunc)(u32 *buf);
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extern DataReadU32xNfunc DataReadU32xFuncs[16];
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#if _M_SSE >= 0x301
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const __m128i bs_mask = _mm_set_epi32(0x0C0D0E0FL, 0x08090A0BL, 0x04050607L, 0x00010203L);
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template<unsigned int N>
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void DataReadU32xN_SSSE3(u32 *bufx16)
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{
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memcpy(bufx16, g_pVideoData, sizeof(u32) * N);
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__m128i* buf = (__m128i *)bufx16;
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if (N>12) { _mm_store_si128(buf, _mm_shuffle_epi8(_mm_load_si128(buf), bs_mask)); buf++; }
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if (N>8) { _mm_store_si128(buf, _mm_shuffle_epi8(_mm_load_si128(buf), bs_mask)); buf++; }
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if (N>4) { _mm_store_si128(buf, _mm_shuffle_epi8(_mm_load_si128(buf), bs_mask)); buf++; }
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_mm_store_si128(buf, _mm_shuffle_epi8(_mm_load_si128(buf), bs_mask));
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g_pVideoData += (sizeof(u32) * N);
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}
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#endif
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template<unsigned int N>
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void DataReadU32xN(u32 *bufx16)
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{
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memcpy(bufx16, g_pVideoData, sizeof(u32) * N);
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if (N >= 1) bufx16[0] = Common::swap32(bufx16[0]);
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if (N >= 2) bufx16[1] = Common::swap32(bufx16[1]);
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if (N >= 3) bufx16[2] = Common::swap32(bufx16[2]);
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if (N >= 4) bufx16[3] = Common::swap32(bufx16[3]);
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if (N >= 5) bufx16[4] = Common::swap32(bufx16[4]);
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if (N >= 6) bufx16[5] = Common::swap32(bufx16[5]);
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if (N >= 7) bufx16[6] = Common::swap32(bufx16[6]);
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if (N >= 8) bufx16[7] = Common::swap32(bufx16[7]);
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if (N >= 9) bufx16[8] = Common::swap32(bufx16[8]);
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if (N >= 10) bufx16[9] = Common::swap32(bufx16[9]);
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if (N >= 11) bufx16[10] = Common::swap32(bufx16[10]);
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if (N >= 12) bufx16[11] = Common::swap32(bufx16[11]);
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if (N >= 13) bufx16[12] = Common::swap32(bufx16[12]);
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if (N >= 14) bufx16[13] = Common::swap32(bufx16[13]);
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if (N >= 15) bufx16[14] = Common::swap32(bufx16[14]);
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if (N >= 16) bufx16[15] = Common::swap32(bufx16[15]);
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g_pVideoData += (sizeof(u32) * N);
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}
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__forceinline u32 DataReadU32Unswapped()
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{
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u32 tmp = *(u32*)g_pVideoData;
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g_pVideoData += 4;
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return tmp;
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}
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__forceinline u8* DataGetPosition()
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{
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return g_pVideoData;
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}
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#endif
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