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-rw-r--r--common/scaler.cpp223
1 files changed, 4 insertions, 219 deletions
diff --git a/common/scaler.cpp b/common/scaler.cpp
index 9c8e471965..8ad000d56a 100644
--- a/common/scaler.cpp
+++ b/common/scaler.cpp
@@ -70,46 +70,6 @@ int Init_2xSaI(uint32 BitFormat) {
return 1;
}
-static inline int GetResult1(uint32 A, uint32 B, uint32 C, uint32 D, uint32 /* E */ ) {
- int x = 0;
- int y = 0;
- int r = 0;
-
- if (A == C)
- x += 1;
- else if (B == C)
- y += 1;
- if (A == D)
- x += 1;
- else if (B == D)
- y += 1;
- if (x <= 1)
- r += 1;
- if (y <= 1)
- r -= 1;
- return r;
-}
-
-static inline int GetResult2(uint32 A, uint32 B, uint32 C, uint32 D, uint32 /* E */ ) {
- int x = 0;
- int y = 0;
- int r = 0;
-
- if (A == C)
- x += 1;
- else if (B == C)
- y += 1;
- if (A == D)
- x += 1;
- else if (B == D)
- y += 1;
- if (x <= 1)
- r -= 1;
- if (y <= 1)
- r += 1;
- return r;
-}
-
static inline int GetResult(uint32 A, uint32 B, uint32 C, uint32 D) {
int x = 0;
int y = 0;
@@ -479,10 +439,10 @@ void _2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch
product1 = INTERPOLATE(colorA, colorC);
product = INTERPOLATE(colorA, colorB);
- r += GetResult1(colorA, colorB, colorG, colorE, colorI);
- r += GetResult2(colorB, colorA, colorK, colorF, colorJ);
- r += GetResult2(colorB, colorA, colorH, colorN, colorM);
- r += GetResult1(colorA, colorB, colorL, colorO, colorP);
+ r += GetResult(colorA, colorB, colorG, colorE);
+ r -= GetResult(colorB, colorA, colorK, colorF);
+ r -= GetResult(colorB, colorA, colorH, colorN);
+ r += GetResult(colorA, colorB, colorL, colorO);
if (r > 0)
product2 = colorA;
@@ -538,181 +498,6 @@ void _2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch
}
}
-static uint32 Bilinear(uint32 A, uint32 B, uint32 x) {
- unsigned long areaA, areaB;
- unsigned long result;
-
- if (A == B)
- return A;
-
- areaB = (x >> 11) & 0x1f; // reduce 16 bit fraction to 5 bits
- areaA = 0x20 - areaB;
-
- A = (A & redblueMask) | ((A & greenMask) << 16);
- B = (B & redblueMask) | ((B & greenMask) << 16);
-
- result = ((areaA * A) + (areaB * B)) >> 5;
-
- return (result & redblueMask) | ((result >> 16) & greenMask);
-}
-
-static uint32 Bilinear4(uint32 A, uint32 B, uint32 C, uint32 D, uint32 x, uint32 y) {
- unsigned long areaA, areaB, areaC, areaD;
- unsigned long result, xy;
-
- x = (x >> 11) & 0x1f;
- y = (y >> 11) & 0x1f;
- xy = (x * y) >> 5;
-
- A = (A & redblueMask) | ((A & greenMask) << 16);
- B = (B & redblueMask) | ((B & greenMask) << 16);
- C = (C & redblueMask) | ((C & greenMask) << 16);
- D = (D & redblueMask) | ((D & greenMask) << 16);
-
- areaA = 0x20 + xy - x - y;
- areaB = x - xy;
- areaC = y - xy;
- areaD = xy;
-
- result = ((areaA * A) + (areaB * B) + (areaC * C) + (areaD * D)) >> 5;
-
- return (result & redblueMask) | ((result >> 16) & greenMask);
-}
-
-// FIXME: Scale_2xSaI is not used anywhere; however, contrary to the _2xSaI function,
-// it seems to allow for arbitrary scale factors, not just 2x... hence I leave this in
-// for now, as that seems to be a very useful feature
-void Scale_2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
- uint32 dstWidth, uint32 dstHeight, int width, int height) {
- uint8 *dP;
- const uint16 *bP;
-
- uint32 w;
- uint32 h;
- uint32 dw;
- uint32 dh;
- uint32 hfinish;
- uint32 wfinish;
-
- uint32 Nextline = srcPitch >> 1;
-
- wfinish = (width - 1) << 16; // convert to fixed point
- dw = wfinish / (dstWidth - 1);
- hfinish = (height - 1) << 16; // convert to fixed point
- dh = hfinish / (dstHeight - 1);
-
- for (h = 0; h < hfinish; h += dh) {
- uint32 y1, y2;
-
- y1 = h & 0xffff; // fraction part of fixed point
- bP = (const uint16 *)(srcPtr + ((h >> 16) * srcPitch));
- dP = dstPtr;
- y2 = 0x10000 - y1;
-
- w = 0;
-
- for (; w < wfinish;) {
- uint32 A, B, C, D;
- uint32 E, F, G, H;
- uint32 I, J, K, L;
- uint32 x1, x2, a1, f1, f2;
- uint32 position, product1 = 0;
-
- position = w >> 16;
- A = bP[position]; // current pixel
- B = bP[position + 1]; // next pixel
- C = bP[position + Nextline];
- D = bP[position + Nextline + 1];
- E = bP[position - Nextline];
- F = bP[position - Nextline + 1];
- G = bP[position - 1];
- H = bP[position + Nextline - 1];
- I = bP[position + 2];
- J = bP[position + Nextline + 2];
- K = bP[position + Nextline + Nextline];
- L = bP[position + Nextline + Nextline + 1];
-
- x1 = w & 0xffff; // fraction part of fixed point
- x2 = 0x10000 - x1;
-
- /*0 */
- if (A == B && C == D && A == C)
- product1 = A;
- else
- /*1 */
- if (A == D && B != C) {
- f1 = (x1 >> 1) + (0x10000 >> 2);
- f2 = (y1 >> 1) + (0x10000 >> 2);
- if (y1 <= f1 && A == J && A != E) // close to B
- {
- a1 = f1 - y1;
- product1 = Bilinear(A, B, a1);
- } else if (y1 >= f1 && A == G && A != L) // close to C
- {
- a1 = y1 - f1;
- product1 = Bilinear(A, C, a1);
- } else if (x1 >= f2 && A == E && A != J) // close to B
- {
- a1 = x1 - f2;
- product1 = Bilinear(A, B, a1);
- } else if (x1 <= f2 && A == L && A != G) // close to C
- {
- a1 = f2 - x1;
- product1 = Bilinear(A, C, a1);
- } else if (y1 >= x1) // close to C
- {
- a1 = y1 - x1;
- product1 = Bilinear(A, C, a1);
- } else if (y1 <= x1) // close to B
- {
- a1 = x1 - y1;
- product1 = Bilinear(A, B, a1);
- }
- } else
- /*2 */
- if (B == C && A != D) {
- f1 = (x1 >> 1) + (0x10000 >> 2);
- f2 = (y1 >> 1) + (0x10000 >> 2);
- if (y2 >= f1 && B == H && B != F) // close to A
- {
- a1 = y2 - f1;
- product1 = Bilinear(B, A, a1);
- } else if (y2 <= f1 && B == I && B != K) // close to D
- {
- a1 = f1 - y2;
- product1 = Bilinear(B, D, a1);
- } else if (x2 >= f2 && B == F && B != H) // close to A
- {
- a1 = x2 - f2;
- product1 = Bilinear(B, A, a1);
- } else if (x2 <= f2 && B == K && B != I) // close to D
- {
- a1 = f2 - x2;
- product1 = Bilinear(B, D, a1);
- } else if (y2 >= x1) // close to A
- {
- a1 = y2 - x1;
- product1 = Bilinear(B, A, a1);
- } else if (y2 <= x1) // close to D
- {
- a1 = x1 - y2;
- product1 = Bilinear(B, D, a1);
- }
- }
- /*3 */
- else {
- product1 = Bilinear4(A, B, C, D, x1, y1);
- }
-
-//end First Pixel
- *(uint32 *)dP = product1;
- dP += 2;
- w += dw;
- }
- dstPtr += dstPitch;
- }
-}
-
void AdvMame2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 03:57:30 +0000