| |
| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "SkSpriteBlitter.h" |
| #include "SkBlitRow.h" |
| #include "SkTemplates.h" |
| #include "SkUtils.h" |
| #include "SkColorPriv.h" |
| |
| #define D16_S32A_Opaque_Pixel(dst, sc) \ |
| do { \ |
| if (sc) { \ |
| *dst = SkSrcOver32To16(sc, *dst); \ |
| } \ |
| } while (0) |
| |
| static inline void D16_S32A_Blend_Pixel_helper(uint16_t* dst, SkPMColor sc, |
| unsigned src_scale) { |
| uint16_t dc = *dst; |
| unsigned sa = SkGetPackedA32(sc); |
| unsigned dr, dg, db; |
| |
| if (255 == sa) { |
| dr = SkAlphaBlend(SkPacked32ToR16(sc), SkGetPackedR16(dc), src_scale); |
| dg = SkAlphaBlend(SkPacked32ToG16(sc), SkGetPackedG16(dc), src_scale); |
| db = SkAlphaBlend(SkPacked32ToB16(sc), SkGetPackedB16(dc), src_scale); |
| } else { |
| unsigned dst_scale = 255 - SkAlphaMul(sa, src_scale); |
| dr = (SkPacked32ToR16(sc) * src_scale + |
| SkGetPackedR16(dc) * dst_scale) >> 8; |
| dg = (SkPacked32ToG16(sc) * src_scale + |
| SkGetPackedG16(dc) * dst_scale) >> 8; |
| db = (SkPacked32ToB16(sc) * src_scale + |
| SkGetPackedB16(dc) * dst_scale) >> 8; |
| } |
| *dst = SkPackRGB16(dr, dg, db); |
| } |
| |
| #define D16_S32A_Blend_Pixel(dst, sc, src_scale) \ |
| do { if (sc) D16_S32A_Blend_Pixel_helper(dst, sc, src_scale); } while (0) |
| |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class Sprite_D16_S16_Opaque : public SkSpriteBlitter { |
| public: |
| Sprite_D16_S16_Opaque(const SkBitmap& source) |
| : SkSpriteBlitter(source) {} |
| |
| // overrides |
| virtual void blitRect(int x, int y, int width, int height) { |
| uint16_t* SK_RESTRICT dst = fDevice->getAddr16(x, y); |
| const uint16_t* SK_RESTRICT src = fSource->getAddr16(x - fLeft, |
| y - fTop); |
| unsigned dstRB = fDevice->rowBytes(); |
| unsigned srcRB = fSource->rowBytes(); |
| |
| while (--height >= 0) { |
| memcpy(dst, src, width << 1); |
| dst = (uint16_t*)((char*)dst + dstRB); |
| src = (const uint16_t*)((const char*)src + srcRB); |
| } |
| } |
| }; |
| |
| #define D16_S16_Blend_Pixel(dst, sc, scale) \ |
| do { \ |
| uint16_t dc = *dst; \ |
| *dst = SkBlendRGB16(sc, dc, scale); \ |
| } while (0) |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_S16_Blend |
| #define SkSPRITE_ARGS , uint8_t alpha |
| #define SkSPRITE_FIELDS uint8_t fSrcAlpha; |
| #define SkSPRITE_INIT fSrcAlpha = alpha; |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint16_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr16 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) int scale = SkAlpha255To256(fSrcAlpha); |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S16_Blend_Pixel(dst, src, scale) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) |
| #include "SkSpriteBlitterTemplate.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #define D16_S4444_Opaque(dst, sc) \ |
| do { \ |
| uint16_t dc = *dst; \ |
| *dst = SkSrcOver4444To16(sc, dc); \ |
| } while (0) |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_S4444_Opaque |
| #define SkSPRITE_ARGS |
| #define SkSPRITE_FIELDS |
| #define SkSPRITE_INIT |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE SkPMColor16 |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr16 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S4444_Opaque(dst, src) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) |
| #include "SkSpriteBlitterTemplate.h" |
| |
| #define D16_S4444_Blend(dst, sc, scale16) \ |
| do { \ |
| uint16_t dc = *dst; \ |
| *dst = SkBlend4444To16(sc, dc, scale16); \ |
| } while (0) |
| |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_S4444_Blend |
| #define SkSPRITE_ARGS , uint8_t alpha |
| #define SkSPRITE_FIELDS uint8_t fSrcAlpha; |
| #define SkSPRITE_INIT fSrcAlpha = alpha; |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint16_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr16 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) int scale = SkAlpha15To16(fSrcAlpha); |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S4444_Blend(dst, src, scale) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) |
| #include "SkSpriteBlitterTemplate.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_SIndex8A_Opaque |
| #define SkSPRITE_ARGS |
| #define SkSPRITE_FIELDS |
| #define SkSPRITE_INIT |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint8_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr8 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) const SkPMColor* ctable = srcBM.getColorTable()->lockColors() |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S32A_Opaque_Pixel(dst, ctable[src]) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) srcBM.getColorTable()->unlockColors(false) |
| #include "SkSpriteBlitterTemplate.h" |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_SIndex8A_Blend |
| #define SkSPRITE_ARGS , uint8_t alpha |
| #define SkSPRITE_FIELDS uint8_t fSrcAlpha; |
| #define SkSPRITE_INIT fSrcAlpha = alpha; |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint8_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr8 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) const SkPMColor* ctable = srcBM.getColorTable()->lockColors(); unsigned src_scale = SkAlpha255To256(fSrcAlpha); |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S32A_Blend_Pixel(dst, ctable[src], src_scale) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) srcBM.getColorTable()->unlockColors(false); |
| #include "SkSpriteBlitterTemplate.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static intptr_t asint(const void* ptr) { |
| return reinterpret_cast<const char*>(ptr) - (const char*)0; |
| } |
| |
| static void blitrow_d16_si8(uint16_t* SK_RESTRICT dst, |
| const uint8_t* SK_RESTRICT src, int count, |
| const uint16_t* SK_RESTRICT ctable) { |
| if (count <= 8) { |
| do { |
| *dst++ = ctable[*src++]; |
| } while (--count); |
| return; |
| } |
| |
| // eat src until we're on a 4byte boundary |
| while (asint(src) & 3) { |
| *dst++ = ctable[*src++]; |
| count -= 1; |
| } |
| |
| int qcount = count >> 2; |
| SkASSERT(qcount > 0); |
| const uint32_t* qsrc = reinterpret_cast<const uint32_t*>(src); |
| if (asint(dst) & 2) { |
| do { |
| uint32_t s4 = *qsrc++; |
| #ifdef SK_CPU_LENDIAN |
| *dst++ = ctable[s4 & 0xFF]; |
| *dst++ = ctable[(s4 >> 8) & 0xFF]; |
| *dst++ = ctable[(s4 >> 16) & 0xFF]; |
| *dst++ = ctable[s4 >> 24]; |
| #else // BENDIAN |
| *dst++ = ctable[s4 >> 24]; |
| *dst++ = ctable[(s4 >> 16) & 0xFF]; |
| *dst++ = ctable[(s4 >> 8) & 0xFF]; |
| *dst++ = ctable[s4 & 0xFF]; |
| #endif |
| } while (--qcount); |
| } else { // dst is on a 4byte boundary |
| uint32_t* ddst = reinterpret_cast<uint32_t*>(dst); |
| do { |
| uint32_t s4 = *qsrc++; |
| #ifdef SK_CPU_LENDIAN |
| *ddst++ = (ctable[(s4 >> 8) & 0xFF] << 16) | ctable[s4 & 0xFF]; |
| *ddst++ = (ctable[s4 >> 24] << 16) | ctable[(s4 >> 16) & 0xFF]; |
| #else // BENDIAN |
| *ddst++ = (ctable[s4 >> 24] << 16) | ctable[(s4 >> 16) & 0xFF]; |
| *ddst++ = (ctable[(s4 >> 8) & 0xFF] << 16) | ctable[s4 & 0xFF]; |
| #endif |
| } while (--qcount); |
| dst = reinterpret_cast<uint16_t*>(ddst); |
| } |
| src = reinterpret_cast<const uint8_t*>(qsrc); |
| count &= 3; |
| // catch any remaining (will be < 4) |
| while (--count >= 0) { |
| *dst++ = ctable[*src++]; |
| } |
| } |
| |
| #define SkSPRITE_ROW_PROC(d, s, n, x, y) blitrow_d16_si8(d, s, n, ctable) |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_SIndex8_Opaque |
| #define SkSPRITE_ARGS |
| #define SkSPRITE_FIELDS |
| #define SkSPRITE_INIT |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint8_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr8 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) const uint16_t* ctable = srcBM.getColorTable()->lock16BitCache() |
| #define SkSPRITE_BLIT_PIXEL(dst, src) *dst = ctable[src] |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) srcBM.getColorTable()->unlock16BitCache() |
| #include "SkSpriteBlitterTemplate.h" |
| |
| #define SkSPRITE_CLASSNAME Sprite_D16_SIndex8_Blend |
| #define SkSPRITE_ARGS , uint8_t alpha |
| #define SkSPRITE_FIELDS uint8_t fSrcAlpha; |
| #define SkSPRITE_INIT fSrcAlpha = alpha; |
| #define SkSPRITE_DST_TYPE uint16_t |
| #define SkSPRITE_SRC_TYPE uint8_t |
| #define SkSPRITE_DST_GETADDR getAddr16 |
| #define SkSPRITE_SRC_GETADDR getAddr8 |
| #define SkSPRITE_PREAMBLE(srcBM, x, y) const uint16_t* ctable = srcBM.getColorTable()->lock16BitCache(); unsigned src_scale = SkAlpha255To256(fSrcAlpha); |
| #define SkSPRITE_BLIT_PIXEL(dst, src) D16_S16_Blend_Pixel(dst, ctable[src], src_scale) |
| #define SkSPRITE_NEXT_ROW |
| #define SkSPRITE_POSTAMBLE(srcBM) srcBM.getColorTable()->unlock16BitCache(); |
| #include "SkSpriteBlitterTemplate.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class Sprite_D16_S32_BlitRowProc : public SkSpriteBlitter { |
| public: |
| Sprite_D16_S32_BlitRowProc(const SkBitmap& source) |
| : SkSpriteBlitter(source) {} |
| |
| // overrides |
| |
| virtual void setup(const SkBitmap& device, int left, int top, |
| const SkPaint& paint) { |
| this->INHERITED::setup(device, left, top, paint); |
| |
| unsigned flags = 0; |
| |
| if (paint.getAlpha() < 0xFF) { |
| flags |= SkBlitRow::kGlobalAlpha_Flag; |
| } |
| if (!fSource->isOpaque()) { |
| flags |= SkBlitRow::kSrcPixelAlpha_Flag; |
| } |
| if (paint.isDither()) { |
| flags |= SkBlitRow::kDither_Flag; |
| } |
| fProc = SkBlitRow::Factory(flags, SkBitmap::kRGB_565_Config); |
| } |
| |
| virtual void blitRect(int x, int y, int width, int height) { |
| uint16_t* SK_RESTRICT dst = fDevice->getAddr16(x, y); |
| const SkPMColor* SK_RESTRICT src = fSource->getAddr32(x - fLeft, |
| y - fTop); |
| unsigned dstRB = fDevice->rowBytes(); |
| unsigned srcRB = fSource->rowBytes(); |
| SkBlitRow::Proc proc = fProc; |
| U8CPU alpha = fPaint->getAlpha(); |
| |
| while (--height >= 0) { |
| proc(dst, src, width, alpha, x, y); |
| y += 1; |
| dst = (uint16_t* SK_RESTRICT)((char*)dst + dstRB); |
| src = (const SkPMColor* SK_RESTRICT)((const char*)src + srcRB); |
| } |
| } |
| |
| private: |
| SkBlitRow::Proc fProc; |
| |
| typedef SkSpriteBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkTemplatesPriv.h" |
| |
| SkSpriteBlitter* SkSpriteBlitter::ChooseD16(const SkBitmap& source, |
| const SkPaint& paint, |
| void* storage, size_t storageSize) { |
| if (paint.getMaskFilter() != NULL) { // may add cases for this |
| return NULL; |
| } |
| if (paint.getXfermode() != NULL) { // may add cases for this |
| return NULL; |
| } |
| if (paint.getColorFilter() != NULL) { // may add cases for this |
| return NULL; |
| } |
| |
| SkSpriteBlitter* blitter = NULL; |
| unsigned alpha = paint.getAlpha(); |
| |
| switch (source.getConfig()) { |
| case SkBitmap::kARGB_8888_Config: |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_S32_BlitRowProc, |
| storage, storageSize, (source)); |
| break; |
| case SkBitmap::kARGB_4444_Config: |
| if (255 == alpha) { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_S4444_Opaque, |
| storage, storageSize, (source)); |
| } else { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_S4444_Blend, |
| storage, storageSize, (source, alpha >> 4)); |
| } |
| break; |
| case SkBitmap::kRGB_565_Config: |
| if (255 == alpha) { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_S16_Opaque, |
| storage, storageSize, (source)); |
| } else { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_S16_Blend, |
| storage, storageSize, (source, alpha)); |
| } |
| break; |
| case SkBitmap::kIndex8_Config: |
| if (paint.isDither()) { |
| // we don't support dither yet in these special cases |
| break; |
| } |
| if (source.isOpaque()) { |
| if (255 == alpha) { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_SIndex8_Opaque, |
| storage, storageSize, (source)); |
| } else { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_SIndex8_Blend, |
| storage, storageSize, (source, alpha)); |
| } |
| } else { |
| if (255 == alpha) { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_SIndex8A_Opaque, |
| storage, storageSize, (source)); |
| } else { |
| SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D16_SIndex8A_Blend, |
| storage, storageSize, (source, alpha)); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| return blitter; |
| } |
