| OLD | NEW |
|---|
| (Empty) |
| 1 #include "SkFlipPixelRef.h" | |
| 2 #include "SkFlattenable.h" | |
| 3 #include "SkRegion.h" | |
| 4 | |
| 5 SkFlipPixelRef::SkFlipPixelRef(SkBitmap::Config config, int width, int height) | |
| 6 : fFlipper(width, height) { | |
| 7 fConfig = config; | |
| 8 fSize = SkBitmap::ComputeSize(config, width, height); | |
| 9 fStorage = sk_malloc_throw(fSize << 1); | |
| 10 fPage0 = fStorage; | |
| 11 fPage1 = (char*)fStorage + fSize; | |
| 12 } | |
| 13 | |
| 14 SkFlipPixelRef::~SkFlipPixelRef() { | |
| 15 sk_free(fStorage); | |
| 16 } | |
| 17 | |
| 18 const SkRegion& SkFlipPixelRef::beginUpdate(SkBitmap* device) { | |
| 19 void* writeAddr; | |
| 20 const void* readAddr; | |
| 21 this->getFrontBack(&readAddr, &writeAddr); | |
| 22 | |
| 23 device->setConfig(fConfig, fFlipper.width(), fFlipper.height()); | |
| 24 device->setPixels(writeAddr); | |
| 25 | |
| 26 SkRegion copyBits; | |
| 27 const SkRegion& dirty = fFlipper.update(©Bits); | |
| 28 | |
| 29 SkFlipPixelRef::CopyBitsFromAddr(*device, copyBits, readAddr); | |
| 30 return dirty; | |
| 31 } | |
| 32 | |
| 33 void SkFlipPixelRef::endUpdate() { | |
| 34 this->swapPages(); | |
| 35 } | |
| 36 | |
| 37 /////////////////////////////////////////////////////////////////////////////// | |
| 38 | |
| 39 void* SkFlipPixelRef::onLockPixels(SkColorTable** ct) { | |
| 40 fMutex.acquire(); | |
| 41 *ct = NULL; | |
| 42 return fPage0; | |
| 43 } | |
| 44 | |
| 45 void SkFlipPixelRef::onUnlockPixels() { | |
| 46 fMutex.release(); | |
| 47 } | |
| 48 | |
| 49 void SkFlipPixelRef::swapPages() { | |
| 50 fMutex.acquire(); | |
| 51 SkTSwap<void*>(fPage0, fPage1); | |
| 52 fMutex.release(); | |
| 53 } | |
| 54 | |
| 55 void SkFlipPixelRef::flatten(SkFlattenableWriteBuffer& buffer) const { | |
| 56 this->INHERITED::flatten(buffer); | |
| 57 | |
| 58 buffer.write32(fSize); | |
| 59 // only need to write page0 | |
| 60 buffer.writePad(fPage0, fSize); | |
| 61 } | |
| 62 | |
| 63 SkFlipPixelRef::SkFlipPixelRef(SkFlattenableReadBuffer& buffer) | |
| 64 : INHERITED(buffer, NULL) { | |
| 65 fSize = buffer.readU32(); | |
| 66 fStorage = sk_malloc_throw(fSize << 1); | |
| 67 fPage0 = fStorage; | |
| 68 fPage1 = (char*)fStorage + fSize; | |
| 69 buffer.read(fPage0, fSize); | |
| 70 } | |
| 71 | |
| 72 SkPixelRef* SkFlipPixelRef::Create(SkFlattenableReadBuffer& buffer) { | |
| 73 return SkNEW_ARGS(SkFlipPixelRef, (buffer)); | |
| 74 } | |
| 75 | |
| 76 static SkPixelRef::Registrar::Registrar reg("SkFlipPixelRef", | |
| 77 SkFlipPixelRef::Create); | |
| 78 | |
| 79 /////////////////////////////////////////////////////////////////////////////// | |
| 80 | |
| 81 static void copyRect(const SkBitmap& dst, const SkIRect& rect, | |
| 82 const void* srcAddr, int shift) { | |
| 83 const size_t offset = rect.fTop * dst.rowBytes() + (rect.fLeft << shift); | |
| 84 char* dstP = static_cast<char*>(dst.getPixels()) + offset; | |
| 85 const char* srcP = static_cast<const char*>(srcAddr) + offset; | |
| 86 const size_t rb = dst.rowBytes(); | |
| 87 const size_t bytes = rect.width() << shift; | |
| 88 | |
| 89 int height = rect.height(); | |
| 90 while (--height >= 0) { | |
| 91 memcpy(dstP, srcP, bytes); | |
| 92 dstP += rb; | |
| 93 srcP += rb; | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 static int getShift(SkBitmap::Config config) { | |
| 98 switch (config) { | |
| 99 case SkBitmap::kARGB_8888_Config: | |
| 100 return 2; | |
| 101 case SkBitmap::kRGB_565_Config: | |
| 102 case SkBitmap::kARGB_4444_Config: | |
| 103 return 1; | |
| 104 case SkBitmap::kIndex8_Config: | |
| 105 case SkBitmap::kA8_Config: | |
| 106 return 0; | |
| 107 default: | |
| 108 return -1; // signal not supported | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 void SkFlipPixelRef::CopyBitsFromAddr(const SkBitmap& dst, const SkRegion& clip, | |
| 113 const void* srcAddr) { | |
| 114 const int shift = getShift(dst.config()); | |
| 115 if (shift < 0) { | |
| 116 return; | |
| 117 } | |
| 118 | |
| 119 const SkIRect bounds = {0, 0, dst.width(), dst.height()}; | |
| 120 SkRegion::Cliperator iter(clip, bounds); | |
| 121 | |
| 122 while (!iter.done()) { | |
| 123 copyRect(dst, iter.rect(), srcAddr, shift); | |
| 124 iter.next(); | |
| 125 } | |
| 126 } | |
| 127 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 113827:
Remove the remainder of the skia source code from the Chromium repo.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/