Remove the remainder of the skia source code from the Chromium repo....

skia/sgl/SkBitmapProcState.cpp

Index: skia/sgl/SkBitmapProcState.cpp
===================================================================
--- skia/sgl/SkBitmapProcState.cpp	(revision 16859)
+++ skia/sgl/SkBitmapProcState.cpp	(working copy)
@@ -1,477 +0,0 @@
-#include "SkBitmapProcState.h"
-#include "SkColorPriv.h"
-#include "SkFilterProc.h"
-#include "SkPaint.h"
-#include "SkShader.h"   // for tilemodes
-
-#ifdef SK_CPU_BENDIAN
-    #define UNPACK_PRIMARY_SHORT(packed)    ((uint32_t)(packed) >> 16)
-    #define UNPACK_SECONDARY_SHORT(packed)  ((packed) & 0xFFFF)
-#else
-    #define UNPACK_PRIMARY_SHORT(packed)    ((packed) & 0xFFFF)
-    #define UNPACK_SECONDARY_SHORT(packed)  ((uint32_t)(packed) >> 16)
-#endif
-
-static inline SkPMColor Filter_32(unsigned x, unsigned y,
-                                  SkPMColor a00, SkPMColor a01,
-                                  SkPMColor a10, SkPMColor a11) {
-    SkASSERT((unsigned)x <= 0xF);
-    SkASSERT((unsigned)y <= 0xF);
-    
-    int xy = x * y;
-    uint32_t mask = gMask_00FF00FF; //0xFF00FF;
-    
-    int scale = 256 - 16*y - 16*x + xy;
-    uint32_t lo = (a00 & mask) * scale;
-    uint32_t hi = ((a00 >> 8) & mask) * scale;
-    
-    scale = 16*x - xy;
-    lo += (a01 & mask) * scale;
-    hi += ((a01 >> 8) & mask) * scale;
-    
-    scale = 16*y - xy;
-    lo += (a10 & mask) * scale;
-    hi += ((a10 >> 8) & mask) * scale;
-    
-    lo += (a11 & mask) * xy;
-    hi += ((a11 >> 8) & mask) * xy;
-    
-    return ((lo >> 8) & mask) | (hi & ~mask);
-}
-
-// returns expanded * 5bits
-static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y,
-                                           uint32_t a00, uint32_t a01,
-                                           uint32_t a10, uint32_t a11) {
-    SkASSERT((unsigned)x <= 0xF);
-    SkASSERT((unsigned)y <= 0xF);
-    
-    a00 = SkExpand_rgb_16(a00);
-    a01 = SkExpand_rgb_16(a01);
-    a10 = SkExpand_rgb_16(a10);
-    a11 = SkExpand_rgb_16(a11);
-    
-    int xy = x * y >> 3;
-    return  a00 * (32 - 2*y - 2*x + xy) +
-            a01 * (2*x - xy) +
-            a10 * (2*y - xy) +
-            a11 * xy;
-}
-
-// turn an expanded 565 * 5bits into SkPMColor
-// g:11 | r:10 | x:1 | b:10
-static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) {
-    unsigned r = (c >> 13) & 0xFF;
-    unsigned g = (c >> 24);
-    unsigned b = (c >> 2) & 0xFF;
-    return SkPackARGB32(0xFF, r, g, b);
-}
-
-// returns answer in SkPMColor format
-static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y,
-                                        uint32_t a00, uint32_t a01,
-                                        uint32_t a10, uint32_t a11) {
-    SkASSERT((unsigned)x <= 0xF);
-    SkASSERT((unsigned)y <= 0xF);
-    
-    a00 = SkExpand_4444(a00);
-    a01 = SkExpand_4444(a01);
-    a10 = SkExpand_4444(a10);
-    a11 = SkExpand_4444(a11);
-
-    int xy = x * y >> 4;
-    uint32_t result =   a00 * (16 - y - x + xy) +
-                        a01 * (x - xy) +
-                        a10 * (y - xy) +
-                        a11 * xy;
-
-    return SkCompact_8888(result);
-}
-
-static inline U8CPU Filter_8(unsigned x, unsigned y,
-                             U8CPU a00, U8CPU a01,
-                             U8CPU a10, U8CPU a11) {
-    SkASSERT((unsigned)x <= 0xF);
-    SkASSERT((unsigned)y <= 0xF);
-    
-    int xy = x * y;
-    unsigned result =   a00 * (256 - 16*y - 16*x + xy) +
-                        a01 * (16*x - xy) +
-                        a10 * (16*y - xy) +
-                        a11 * xy;
-    
-    return result >> 8;
-}
-
-/*****************************************************************************
- *
- *  D32 functions
- *
- */
-
-// SRC == 8888
-
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_32(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        S32_opaque_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 SkPMColor
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
-                                SkASSERT(state.fAlphaScale == 256)
-#define RETURNDST(src)          src
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        c
-#include "SkBitmapProcState_sample.h"
-
-#define MAKENAME(suffix)        S32_alpha_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 SkPMColor
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
-                                SkASSERT(state.fAlphaScale < 256)
-#define PREAMBLE(state)         unsigned scale = state.fAlphaScale
-#define RETURNDST(src)          SkAlphaMulQ(src, scale)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkAlphaMulQ(c, scale)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == 565
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_565_Expanded(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        S16_opaque_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 uint16_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \
-                                SkASSERT(state.fAlphaScale == 256)
-#define RETURNDST(src)          SkPixel16ToPixel32(src)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkExpanded_565_To_PMColor(c)
-#include "SkBitmapProcState_sample.h"
-
-#define MAKENAME(suffix)        S16_alpha_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 uint16_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \
-                                SkASSERT(state.fAlphaScale < 256)
-#define PREAMBLE(state)         unsigned scale = state.fAlphaScale
-#define RETURNDST(src)          SkAlphaMulQ(SkPixel16ToPixel32(src), scale)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkAlphaMulQ(SkExpanded_565_To_PMColor(c), scale)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == Index8
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_32(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        SI8_opaque_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 uint8_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
-                                SkASSERT(state.fAlphaScale == 256)
-#define PREAMBLE(state)         const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors()
-#define RETURNDST(src)          table[src]
-#define SRC_TO_FILTER(src)      table[src]
-#define FILTER_TO_DST(c)        c
-#define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlockColors(false)
-#include "SkBitmapProcState_sample.h"
-
-#define MAKENAME(suffix)        SI8_alpha_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 uint8_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
-                                SkASSERT(state.fAlphaScale < 256)
-#define PREAMBLE(state)         unsigned scale = state.fAlphaScale; \
-                                const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors()
-#define RETURNDST(src)          SkAlphaMulQ(table[src], scale)
-#define SRC_TO_FILTER(src)      table[src]
-#define FILTER_TO_DST(c)        SkAlphaMulQ(c, scale)
-#define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlockColors(false)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == 4444
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_4444_D32(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        S4444_opaque_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 SkPMColor16
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \
-SkASSERT(state.fAlphaScale == 256)
-#define RETURNDST(src)          SkPixel4444ToPixel32(src)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        c
-#include "SkBitmapProcState_sample.h"
-
-#define MAKENAME(suffix)        S4444_alpha_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 SkPMColor16
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \
-SkASSERT(state.fAlphaScale < 256)
-#define PREAMBLE(state)         unsigned scale = state.fAlphaScale
-#define RETURNDST(src)          SkAlphaMulQ(SkPixel4444ToPixel32(src), scale)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkAlphaMulQ(c, scale)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == A8
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_8(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        SA8_alpha_D32 ## suffix
-#define DSTSIZE                 32
-#define SRCTYPE                 uint8_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kA8_Config); \
-                                SkASSERT(state.fAlphaScale == 256)
-#define PREAMBLE(state)         const SkPMColor pmColor = state.fPaintPMColor;
-#define RETURNDST(src)          SkAlphaMulQ(pmColor, SkAlpha255To256(src))
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkAlphaMulQ(pmColor, SkAlpha255To256(c))
-#include "SkBitmapProcState_sample.h"
-
-/*****************************************************************************
- *
- *  D16 functions
- *
- */
-
-// SRC == 8888
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_32(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        S32_D16 ## suffix
-#define DSTSIZE                 16
-#define SRCTYPE                 SkPMColor
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
-                                SkASSERT(state.fBitmap->isOpaque())
-#define RETURNDST(src)          SkPixel32ToPixel16(src)
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkPixel32ToPixel16(c)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == 565
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_565_Expanded(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        S16_D16 ## suffix
-#define DSTSIZE                 16
-#define SRCTYPE                 uint16_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config)
-#define RETURNDST(src)          src
-#define SRC_TO_FILTER(src)      src
-#define FILTER_TO_DST(c)        SkCompact_rgb_16((c) >> 5)
-#include "SkBitmapProcState_sample.h"
-
-// SRC == Index8
-
-#undef FILTER_PROC
-#define FILTER_PROC(x, y, a, b, c, d)   Filter_565_Expanded(x, y, a, b, c, d)
-
-#define MAKENAME(suffix)        SI8_D16 ## suffix
-#define DSTSIZE                 16
-#define SRCTYPE                 uint8_t
-#define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
-                                SkASSERT(state.fBitmap->isOpaque())
-#define PREAMBLE(state)         const uint16_t* SK_RESTRICT table = state.fBitmap->getColorTable()->lock16BitCache()
-#define RETURNDST(src)          table[src]
-#define SRC_TO_FILTER(src)      table[src]
-#define FILTER_TO_DST(c)        SkCompact_rgb_16(c >> 5)
-#define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlock16BitCache()
-#include "SkBitmapProcState_sample.h"
-
-static bool valid_for_filtering(unsigned dimension) {
-    // for filtering, width and height must fit in 14bits, since we use steal
-    // 2 bits from each to store our 4bit subpixel data
-    return (dimension & ~0x3FFF) == 0;
-}
-
-bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) {
-    if (fOrigBitmap.width() == 0 || fOrigBitmap.height() == 0) {
-        return false;
-    }
-    const SkMatrix* m;
-    
-    if (inv.getType() <= SkMatrix::kTranslate_Mask ||
-        (SkShader::kClamp_TileMode == fTileModeX &&
-         SkShader::kClamp_TileMode == fTileModeY)) {
-        m = &inv;
-    } else {
-        fUnitInvMatrix = inv;
-        fUnitInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height());
-        m = &fUnitInvMatrix;
-    }
-    
-    fBitmap = &fOrigBitmap;
-#ifdef SK_SUPPORT_MIPMAP
-    if (fOrigBitmap.hasMipMap()) {
-        int shift = fOrigBitmap.extractMipLevel(&fMipBitmap,
-                                                SkScalarToFixed(m->getScaleX()),
-                                                SkScalarToFixed(m->getSkewY()));
-        
-        if (shift > 0) {
-            if (m != &fUnitInvMatrix) {
-                fUnitInvMatrix = *m;
-                m = &fUnitInvMatrix;
-            }
-
-            SkScalar scale = SkFixedToScalar(SK_Fixed1 >> shift);
-            fUnitInvMatrix.postScale(scale, scale);
-            
-            // now point here instead of fOrigBitmap
-            fBitmap = &fMipBitmap;
-        }
-    }
-#endif
-
-    fInvMatrix      = m;
-    fInvProc        = m->getMapXYProc();
-    fInvType        = m->getType();
-    fInvSx          = SkScalarToFixed(m->getScaleX());
-    fInvSy          = SkScalarToFixed(m->getScaleY());
-    fInvKy          = SkScalarToFixed(m->getSkewY());
-    fInvTxPlusHalf  = SkScalarToFixed(m->getTranslateX()) + (fInvSx >> 1);
-    fInvTyPlusHalf  = SkScalarToFixed(m->getTranslateY()) + (fInvSy >> 1);
-
-    /*  the -1 keeps us symetric with general policy for rounding, which is
-        (x + 1/2) >> 16. This sends exact halves to the next large pixel
-        e.g. x==3.5, round(x) == 4. However, our state is working with the
-        inverse matrix, and so to match the result of "normal" rounding, we
-        subtract 1 so that we in effect behave the same at the half-way point.
-        To compare, try drawing a bitmap with y == exact-half using the sprite
-        blitters and with us. Without the -1, we will draw the colors a whole
-        pixel shifted up (yikes).
-    */
-    fInvTxPlusHalf -= 1;
-    fInvTyPlusHalf -= 1;
-
-    fAlphaScale = SkAlpha255To256(paint.getAlpha());
-
-    // pick-up filtering from the paint, but only if the matrix is
-    // more complex than identity/translate (i.e. no need to pay the cost
-    // of filtering if we're not scaled etc.).
-    // note: we explicitly check inv, since m might be scaled due to unitinv
-    //       trickery, but we don't want to see that for this test
-    fDoFilter = paint.isFilterBitmap() &&
-                (inv.getType() > SkMatrix::kTranslate_Mask &&
-                 valid_for_filtering(fBitmap->width() | fBitmap->height()));
-
-    fMatrixProc = this->chooseMatrixProc();
-    if (NULL == fMatrixProc) {
-        return false;
-    }
-
-    ///////////////////////////////////////////////////////////////////////
-    
-    int index = 0;
-    if (fAlphaScale < 256) {  // note: this distinction is not used for D16
-        index |= 1;
-    }
-    if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) {
-        index |= 2;
-    }
-    if (fDoFilter) {
-        index |= 4;
-    }
-    // bits 3,4,5 encoding the source bitmap format
-    switch (fBitmap->config()) {
-        case SkBitmap::kARGB_8888_Config:
-            index |= 0;
-            break;
-        case SkBitmap::kRGB_565_Config:
-            index |= 8;
-            break;
-        case SkBitmap::kIndex8_Config:
-            index |= 16;
-            break;
-        case SkBitmap::kARGB_4444_Config:
-            index |= 24;
-            break;
-        case SkBitmap::kA8_Config:
-            index |= 32;
-            fPaintPMColor = SkPreMultiplyColor(paint.getColor());
-        default:
-            return false;
-    }
-
-    static const SampleProc32 gSample32[] = {
-        S32_opaque_D32_nofilter_DXDY,
-        S32_alpha_D32_nofilter_DXDY,
-        S32_opaque_D32_nofilter_DX,
-        S32_alpha_D32_nofilter_DX,
-        S32_opaque_D32_filter_DXDY,
-        S32_alpha_D32_filter_DXDY,
-        S32_opaque_D32_filter_DX,
-        S32_alpha_D32_filter_DX,
-        
-        S16_opaque_D32_nofilter_DXDY,
-        S16_alpha_D32_nofilter_DXDY,
-        S16_opaque_D32_nofilter_DX,
-        S16_alpha_D32_nofilter_DX,
-        S16_opaque_D32_filter_DXDY,
-        S16_alpha_D32_filter_DXDY,
-        S16_opaque_D32_filter_DX,
-        S16_alpha_D32_filter_DX,
-        
-        SI8_opaque_D32_nofilter_DXDY,
-        SI8_alpha_D32_nofilter_DXDY,
-        SI8_opaque_D32_nofilter_DX,
-        SI8_alpha_D32_nofilter_DX,
-        SI8_opaque_D32_filter_DXDY,
-        SI8_alpha_D32_filter_DXDY,
-        SI8_opaque_D32_filter_DX,
-        SI8_alpha_D32_filter_DX,
-        
-        S4444_opaque_D32_nofilter_DXDY,
-        S4444_alpha_D32_nofilter_DXDY,
-        S4444_opaque_D32_nofilter_DX,
-        S4444_alpha_D32_nofilter_DX,
-        S4444_opaque_D32_filter_DXDY,
-        S4444_alpha_D32_filter_DXDY,
-        S4444_opaque_D32_filter_DX,
-        S4444_alpha_D32_filter_DX,
-        
-        // A8 treats alpha/opauqe the same (equally efficient)
-        SA8_alpha_D32_nofilter_DXDY,
-        SA8_alpha_D32_nofilter_DXDY,
-        SA8_alpha_D32_nofilter_DX,
-        SA8_alpha_D32_nofilter_DX,
-        SA8_alpha_D32_filter_DXDY,
-        SA8_alpha_D32_filter_DXDY,
-        SA8_alpha_D32_filter_DX,
-        SA8_alpha_D32_filter_DX
-    };
-    
-    static const SampleProc16 gSample16[] = {
-        S32_D16_nofilter_DXDY,
-        S32_D16_nofilter_DX,
-        S32_D16_filter_DXDY,
-        S32_D16_filter_DX,
-        
-        S16_D16_nofilter_DXDY,
-        S16_D16_nofilter_DX,
-        S16_D16_filter_DXDY,
-        S16_D16_filter_DX,
-        
-        SI8_D16_nofilter_DXDY,
-        SI8_D16_nofilter_DX,
-        SI8_D16_filter_DXDY,
-        SI8_D16_filter_DX,
-        
-        // Don't support 4444 -> 565
-        NULL, NULL, NULL, NULL,
-        // Don't support A8 -> 565
-        NULL, NULL, NULL, NULL
-    };
-    
-    fSampleProc32 = gSample32[index];
-    index >>= 1;    // shift away any opaque/alpha distinction
-    fSampleProc16 = gSample16[index];
-
-    return true;
-}
-