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hq2x.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2005 The ScummVM project
 *
 * 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.
 *
 * $Header: /cvsroot/scummvm/scummvm/common/scaler/hq2x.cpp,v 1.16.2.1 2005/10/18 02:11:18 sev Exp $
 *
 */

#include "common/scaler/intern.h"

#ifdef USE_NASM
// Assembly version of HQ2x

extern "C" {

#ifndef _WIN32
#define hq2x_16 _hq2x_16
#endif

void hq2x_16(const byte *, byte *, uint32, uint32, uint32, uint32);

}

void HQ2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
      hq2x_16(srcPtr, dstPtr, width, height, srcPitch, dstPitch);
}

#else

#ifdef HAS_ALTIVEC

#ifdef __amigaos4__
#include <proto/exec.h>
#include <altivec.h>
static bool isAltiVecAvailable() {
      uint32 vecUnit;
      IExec->GetCPUInfo(GCIT_VectorUnit, &vecUnit, TAG_DONE);
      if (vecUnit == VECTORTYPE_NONE)
            return false;
      else
            return true;
}
#else

#include <sys/sysctl.h>

static bool isAltiVecAvailable()  {
      int selectors[2] = { CTL_HW, HW_VECTORUNIT };
      int hasVectorUnit = 0;
      size_t length = sizeof(hasVectorUnit);
      int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
      if ( 0 == error )
            return hasVectorUnit != 0;
      return false;
}
#endif
#endif

#define PIXEL00_0 *(q) = w5;
#define PIXEL00_10      *(q) = interpolate16_2<bitFormat,3,1>(w5, w1);
#define PIXEL00_11      *(q) = interpolate16_2<bitFormat,3,1>(w5, w4);
#define PIXEL00_12      *(q) = interpolate16_2<bitFormat,3,1>(w5, w2);
#define PIXEL00_20      *(q) = interpolate16_3<bitFormat,2,1,1>(w5, w4, w2);
#define PIXEL00_21      *(q) = interpolate16_3<bitFormat,2,1,1>(w5, w1, w2);
#define PIXEL00_22      *(q) = interpolate16_3<bitFormat,2,1,1>(w5, w1, w4);
#define PIXEL00_60      *(q) = interpolate16_3<bitFormat,5,2,1>(w5, w2, w4);
#define PIXEL00_61      *(q) = interpolate16_3<bitFormat,5,2,1>(w5, w4, w2);
#define PIXEL00_70      *(q) = interpolate16_3<bitFormat,6,1,1>(w5, w4, w2);
#define PIXEL00_90      *(q) = interpolate16_3<bitFormat,2,3,3>(w5, w4, w2);
#define PIXEL00_100     *(q) = interpolate16_3<bitFormat,14,1,1>(w5, w4, w2);

#define PIXEL01_0 *(q+1) = w5;
#define PIXEL01_10      *(q+1) = interpolate16_2<bitFormat,3,1>(w5, w3);
#define PIXEL01_11      *(q+1) = interpolate16_2<bitFormat,3,1>(w5, w2);
#define PIXEL01_12      *(q+1) = interpolate16_2<bitFormat,3,1>(w5, w6);
#define PIXEL01_20      *(q+1) = interpolate16_3<bitFormat,2,1,1>(w5, w2, w6);
#define PIXEL01_21      *(q+1) = interpolate16_3<bitFormat,2,1,1>(w5, w3, w6);
#define PIXEL01_22      *(q+1) = interpolate16_3<bitFormat,2,1,1>(w5, w3, w2);
#define PIXEL01_60      *(q+1) = interpolate16_3<bitFormat,5,2,1>(w5, w6, w2);
#define PIXEL01_61      *(q+1) = interpolate16_3<bitFormat,5,2,1>(w5, w2, w6);
#define PIXEL01_70      *(q+1) = interpolate16_3<bitFormat,6,1,1>(w5, w2, w6);
#define PIXEL01_90      *(q+1) = interpolate16_3<bitFormat,2,3,3>(w5, w2, w6);
#define PIXEL01_100     *(q+1) = interpolate16_3<bitFormat,14,1,1>(w5, w2, w6);

#define PIXEL10_0 *(q+nextlineDst) = w5;
#define PIXEL10_10      *(q+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w7);
#define PIXEL10_11      *(q+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w8);
#define PIXEL10_12      *(q+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w4);
#define PIXEL10_20      *(q+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w8, w4);
#define PIXEL10_21      *(q+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w7, w4);
#define PIXEL10_22      *(q+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w7, w8);
#define PIXEL10_60      *(q+nextlineDst) = interpolate16_3<bitFormat,5,2,1>(w5, w4, w8);
#define PIXEL10_61      *(q+nextlineDst) = interpolate16_3<bitFormat,5,2,1>(w5, w8, w4);
#define PIXEL10_70      *(q+nextlineDst) = interpolate16_3<bitFormat,6,1,1>(w5, w8, w4);
#define PIXEL10_90      *(q+nextlineDst) = interpolate16_3<bitFormat,2,3,3>(w5, w8, w4);
#define PIXEL10_100     *(q+nextlineDst) = interpolate16_3<bitFormat,14,1,1>(w5, w8, w4);

#define PIXEL11_0 *(q+1+nextlineDst) = w5;
#define PIXEL11_10      *(q+1+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w9);
#define PIXEL11_11      *(q+1+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w6);
#define PIXEL11_12      *(q+1+nextlineDst) = interpolate16_2<bitFormat,3,1>(w5, w8);
#define PIXEL11_20      *(q+1+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w6, w8);
#define PIXEL11_21      *(q+1+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w9, w8);
#define PIXEL11_22      *(q+1+nextlineDst) = interpolate16_3<bitFormat,2,1,1>(w5, w9, w6);
#define PIXEL11_60      *(q+1+nextlineDst) = interpolate16_3<bitFormat,5,2,1>(w5, w8, w6);
#define PIXEL11_61      *(q+1+nextlineDst) = interpolate16_3<bitFormat,5,2,1>(w5, w6, w8);
#define PIXEL11_70      *(q+1+nextlineDst) = interpolate16_3<bitFormat,6,1,1>(w5, w6, w8);
#define PIXEL11_90      *(q+1+nextlineDst) = interpolate16_3<bitFormat,2,3,3>(w5, w6, w8);
#define PIXEL11_100     *(q+1+nextlineDst) = interpolate16_3<bitFormat,14,1,1>(w5, w6, w8);

#define YUV(x)    RGBtoYUV[w ## x]


#define bitFormat 565
void HQ2x_565(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
      #include "common/scaler/hq2x.h"
}
#undef bitFormat

#define bitFormat 555
void HQ2x_555(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
      #include "common/scaler/hq2x.h"
}
#undef bitFormat


#ifdef HAS_ALTIVEC
      #define USE_ALTIVEC     1

      #define bitFormat 565
      void HQ2x_565_Altivec(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
            #include "common/scaler/hq2x.h"
      }
      #undef bitFormat

      #define bitFormat 555
      void HQ2x_555_Altivec(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
            #include "common/scaler/hq2x.h"
      }
      #undef bitFormat
#endif

void HQ2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
#ifdef HAS_ALTIVEC
      if (isAltiVecAvailable()) {
            if (gBitFormat == 565)
                  HQ2x_565_Altivec(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
            else
                  HQ2x_555_Altivec(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
            return;
      }
#endif

      if (gBitFormat == 565)
            HQ2x_565(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
      else
            HQ2x_555(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
}

#endif //Assembly version

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