| |
| /* |
| * Copyright 2008 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 "SkBitmap.h" |
| #include "SkColorPriv.h" |
| #include "SkDither.h" |
| #include "SkFlattenable.h" |
| #include "SkImagePriv.h" |
| #include "SkMallocPixelRef.h" |
| #include "SkMask.h" |
| #include "SkReadBuffer.h" |
| #include "SkWriteBuffer.h" |
| #include "SkPixelRef.h" |
| #include "SkThread.h" |
| #include "SkUnPreMultiply.h" |
| #include "SkUtils.h" |
| #include "SkValidationUtils.h" |
| #include "SkPackBits.h" |
| #include <new> |
| |
| static bool reset_return_false(SkBitmap* bm) { |
| bm->reset(); |
| return false; |
| } |
| |
| SkBitmap::SkBitmap() { |
| sk_bzero(this, sizeof(*this)); |
| } |
| |
| SkBitmap::SkBitmap(const SkBitmap& src) { |
| SkDEBUGCODE(src.validate();) |
| sk_bzero(this, sizeof(*this)); |
| *this = src; |
| SkDEBUGCODE(this->validate();) |
| } |
| |
| SkBitmap::~SkBitmap() { |
| SkDEBUGCODE(this->validate();) |
| this->freePixels(); |
| } |
| |
| SkBitmap& SkBitmap::operator=(const SkBitmap& src) { |
| if (this != &src) { |
| this->freePixels(); |
| memcpy(this, &src, sizeof(src)); |
| |
| // inc src reference counts |
| SkSafeRef(src.fPixelRef); |
| |
| // we reset our locks if we get blown away |
| fPixelLockCount = 0; |
| |
| if (fPixelRef) { |
| // ignore the values from the memcpy |
| fPixels = NULL; |
| fColorTable = NULL; |
| // Note that what to for genID is somewhat arbitrary. We have no |
| // way to track changes to raw pixels across multiple SkBitmaps. |
| // Would benefit from an SkRawPixelRef type created by |
| // setPixels. |
| // Just leave the memcpy'ed one but they'll get out of sync |
| // as soon either is modified. |
| } |
| } |
| |
| SkDEBUGCODE(this->validate();) |
| return *this; |
| } |
| |
| void SkBitmap::swap(SkBitmap& other) { |
| SkTSwap(fColorTable, other.fColorTable); |
| SkTSwap(fPixelRef, other.fPixelRef); |
| SkTSwap(fPixelRefOrigin, other.fPixelRefOrigin); |
| SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| SkTSwap(fPixels, other.fPixels); |
| SkTSwap(fInfo, other.fInfo); |
| SkTSwap(fRowBytes, other.fRowBytes); |
| SkTSwap(fFlags, other.fFlags); |
| |
| SkDEBUGCODE(this->validate();) |
| } |
| |
| void SkBitmap::reset() { |
| this->freePixels(); |
| sk_bzero(this, sizeof(*this)); |
| } |
| |
| void SkBitmap::getBounds(SkRect* bounds) const { |
| SkASSERT(bounds); |
| bounds->set(0, 0, |
| SkIntToScalar(fInfo.fWidth), SkIntToScalar(fInfo.fHeight)); |
| } |
| |
| void SkBitmap::getBounds(SkIRect* bounds) const { |
| SkASSERT(bounds); |
| bounds->set(0, 0, fInfo.fWidth, fInfo.fHeight); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkBitmap::setInfo(const SkImageInfo& origInfo, size_t rowBytes) { |
| SkImageInfo info = origInfo; |
| |
| if (!SkColorTypeValidateAlphaType(info.fColorType, info.fAlphaType, |
| &info.fAlphaType)) { |
| return reset_return_false(this); |
| } |
| |
| // require that rowBytes fit in 31bits |
| int64_t mrb = info.minRowBytes64(); |
| if ((int32_t)mrb != mrb) { |
| return reset_return_false(this); |
| } |
| if ((int64_t)rowBytes != (int32_t)rowBytes) { |
| return reset_return_false(this); |
| } |
| |
| if (info.width() < 0 || info.height() < 0) { |
| return reset_return_false(this); |
| } |
| |
| if (kUnknown_SkColorType == info.colorType()) { |
| rowBytes = 0; |
| } else if (0 == rowBytes) { |
| rowBytes = (size_t)mrb; |
| } else if (!info.validRowBytes(rowBytes)) { |
| return reset_return_false(this); |
| } |
| |
| this->freePixels(); |
| |
| fInfo = info; |
| fRowBytes = SkToU32(rowBytes); |
| return true; |
| } |
| |
| bool SkBitmap::setAlphaType(SkAlphaType alphaType) { |
| if (!SkColorTypeValidateAlphaType(fInfo.fColorType, alphaType, &alphaType)) { |
| return false; |
| } |
| if (fInfo.fAlphaType != alphaType) { |
| fInfo.fAlphaType = alphaType; |
| if (fPixelRef) { |
| fPixelRef->changeAlphaType(alphaType); |
| } |
| } |
| return true; |
| } |
| |
| void SkBitmap::updatePixelsFromRef() const { |
| if (NULL != fPixelRef) { |
| if (fPixelLockCount > 0) { |
| SkASSERT(fPixelRef->isLocked()); |
| |
| void* p = fPixelRef->pixels(); |
| if (NULL != p) { |
| p = (char*)p |
| + fPixelRefOrigin.fY * fRowBytes |
| + fPixelRefOrigin.fX * fInfo.bytesPerPixel(); |
| } |
| fPixels = p; |
| fColorTable = fPixelRef->colorTable(); |
| } else { |
| SkASSERT(0 == fPixelLockCount); |
| fPixels = NULL; |
| fColorTable = NULL; |
| } |
| } |
| } |
| |
| SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, int dx, int dy) { |
| #ifdef SK_DEBUG |
| if (pr) { |
| if (kUnknown_SkColorType != fInfo.colorType()) { |
| const SkImageInfo& prInfo = pr->info(); |
| SkASSERT(fInfo.fWidth <= prInfo.fWidth); |
| SkASSERT(fInfo.fHeight <= prInfo.fHeight); |
| SkASSERT(fInfo.fColorType == prInfo.fColorType); |
| switch (prInfo.fAlphaType) { |
| case kIgnore_SkAlphaType: |
| SkASSERT(fInfo.fAlphaType == kIgnore_SkAlphaType); |
| break; |
| case kOpaque_SkAlphaType: |
| case kPremul_SkAlphaType: |
| SkASSERT(fInfo.fAlphaType == kOpaque_SkAlphaType || |
| fInfo.fAlphaType == kPremul_SkAlphaType); |
| break; |
| case kUnpremul_SkAlphaType: |
| SkASSERT(fInfo.fAlphaType == kOpaque_SkAlphaType || |
| fInfo.fAlphaType == kUnpremul_SkAlphaType); |
| break; |
| } |
| } |
| } |
| #endif |
| |
| if (pr) { |
| const SkImageInfo& info = pr->info(); |
| fPixelRefOrigin.set(SkPin32(dx, 0, info.fWidth), |
| SkPin32(dy, 0, info.fHeight)); |
| } else { |
| // ignore dx,dy if there is no pixelref |
| fPixelRefOrigin.setZero(); |
| } |
| |
| if (fPixelRef != pr) { |
| this->freePixels(); |
| SkASSERT(NULL == fPixelRef); |
| |
| SkSafeRef(pr); |
| fPixelRef = pr; |
| this->updatePixelsFromRef(); |
| } |
| |
| SkDEBUGCODE(this->validate();) |
| return pr; |
| } |
| |
| void SkBitmap::lockPixels() const { |
| if (NULL != fPixelRef && 0 == sk_atomic_inc(&fPixelLockCount)) { |
| fPixelRef->lockPixels(); |
| this->updatePixelsFromRef(); |
| } |
| SkDEBUGCODE(this->validate();) |
| } |
| |
| void SkBitmap::unlockPixels() const { |
| SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| |
| if (NULL != fPixelRef && 1 == sk_atomic_dec(&fPixelLockCount)) { |
| fPixelRef->unlockPixels(); |
| this->updatePixelsFromRef(); |
| } |
| SkDEBUGCODE(this->validate();) |
| } |
| |
| bool SkBitmap::lockPixelsAreWritable() const { |
| return (fPixelRef) ? fPixelRef->lockPixelsAreWritable() : false; |
| } |
| |
| void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
| if (NULL == p) { |
| this->setPixelRef(NULL); |
| return; |
| } |
| |
| if (kUnknown_SkColorType == fInfo.colorType()) { |
| this->setPixelRef(NULL); |
| return; |
| } |
| |
| SkPixelRef* pr = SkMallocPixelRef::NewDirect(fInfo, p, fRowBytes, ctable); |
| if (NULL == pr) { |
| this->setPixelRef(NULL); |
| return; |
| } |
| |
| this->setPixelRef(pr)->unref(); |
| |
| // since we're already allocated, we lockPixels right away |
| this->lockPixels(); |
| SkDEBUGCODE(this->validate();) |
| } |
| |
| bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| HeapAllocator stdalloc; |
| |
| if (NULL == allocator) { |
| allocator = &stdalloc; |
| } |
| return allocator->allocPixelRef(this, ctable); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkBitmap::allocPixels(const SkImageInfo& requestedInfo, size_t rowBytes) { |
| if (kIndex_8_SkColorType == requestedInfo.colorType()) { |
| return reset_return_false(this); |
| } |
| if (!this->setInfo(requestedInfo, rowBytes)) { |
| return reset_return_false(this); |
| } |
| |
| // setInfo may have corrected info (e.g. 565 is always opaque). |
| const SkImageInfo& correctedInfo = this->info(); |
| // setInfo may have computed a valid rowbytes if 0 were passed in |
| rowBytes = this->rowBytes(); |
| |
| SkMallocPixelRef::PRFactory defaultFactory; |
| |
| SkPixelRef* pr = defaultFactory.create(correctedInfo, rowBytes, NULL); |
| if (NULL == pr) { |
| return reset_return_false(this); |
| } |
| this->setPixelRef(pr)->unref(); |
| |
| // TODO: lockPixels could/should return bool or void*/NULL |
| this->lockPixels(); |
| if (NULL == this->getPixels()) { |
| return reset_return_false(this); |
| } |
| return true; |
| } |
| |
| bool SkBitmap::allocPixels(const SkImageInfo& requestedInfo, SkPixelRefFactory* factory, |
| SkColorTable* ctable) { |
| if (kIndex_8_SkColorType == requestedInfo.fColorType && NULL == ctable) { |
| return reset_return_false(this); |
| } |
| if (!this->setInfo(requestedInfo)) { |
| return reset_return_false(this); |
| } |
| |
| // setInfo may have corrected info (e.g. 565 is always opaque). |
| const SkImageInfo& correctedInfo = this->info(); |
| |
| SkMallocPixelRef::PRFactory defaultFactory; |
| if (NULL == factory) { |
| factory = &defaultFactory; |
| } |
| |
| SkPixelRef* pr = factory->create(correctedInfo, correctedInfo.minRowBytes(), ctable); |
| if (NULL == pr) { |
| return reset_return_false(this); |
| } |
| this->setPixelRef(pr)->unref(); |
| |
| // TODO: lockPixels could/should return bool or void*/NULL |
| this->lockPixels(); |
| if (NULL == this->getPixels()) { |
| return reset_return_false(this); |
| } |
| return true; |
| } |
| |
| bool SkBitmap::installPixels(const SkImageInfo& requestedInfo, void* pixels, size_t rb, |
| SkColorTable* ct, void (*releaseProc)(void* addr, void* context), |
| void* context) { |
| if (!this->setInfo(requestedInfo, rb)) { |
| this->reset(); |
| return false; |
| } |
| |
| // setInfo may have corrected info (e.g. 565 is always opaque). |
| const SkImageInfo& correctedInfo = this->info(); |
| |
| SkPixelRef* pr = SkMallocPixelRef::NewWithProc(correctedInfo, rb, ct, pixels, releaseProc, |
| context); |
| if (!pr) { |
| this->reset(); |
| return false; |
| } |
| |
| this->setPixelRef(pr)->unref(); |
| |
| // since we're already allocated, we lockPixels right away |
| this->lockPixels(); |
| SkDEBUGCODE(this->validate();) |
| return true; |
| } |
| |
| bool SkBitmap::installMaskPixels(const SkMask& mask) { |
| if (SkMask::kA8_Format != mask.fFormat) { |
| this->reset(); |
| return false; |
| } |
| return this->installPixels(SkImageInfo::MakeA8(mask.fBounds.width(), |
| mask.fBounds.height()), |
| mask.fImage, mask.fRowBytes); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkBitmap::freePixels() { |
| if (NULL != fPixelRef) { |
| if (fPixelLockCount > 0) { |
| fPixelRef->unlockPixels(); |
| } |
| fPixelRef->unref(); |
| fPixelRef = NULL; |
| fPixelRefOrigin.setZero(); |
| } |
| fPixelLockCount = 0; |
| fPixels = NULL; |
| fColorTable = NULL; |
| } |
| |
| uint32_t SkBitmap::getGenerationID() const { |
| return (fPixelRef) ? fPixelRef->getGenerationID() : 0; |
| } |
| |
| void SkBitmap::notifyPixelsChanged() const { |
| SkASSERT(!this->isImmutable()); |
| if (fPixelRef) { |
| fPixelRef->notifyPixelsChanged(); |
| } |
| } |
| |
| GrTexture* SkBitmap::getTexture() const { |
| return fPixelRef ? fPixelRef->getTexture() : NULL; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /** We explicitly use the same allocator for our pixels that SkMask does, |
| so that we can freely assign memory allocated by one class to the other. |
| */ |
| bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| SkColorTable* ctable) { |
| const SkImageInfo info = dst->info(); |
| if (kUnknown_SkColorType == info.colorType()) { |
| // SkDebugf("unsupported config for info %d\n", dst->config()); |
| return false; |
| } |
| |
| SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, dst->rowBytes(), ctable); |
| if (NULL == pr) { |
| return false; |
| } |
| |
| dst->setPixelRef(pr)->unref(); |
| // since we're already allocated, we lockPixels right away |
| dst->lockPixels(); |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
| size_t dstRowBytes, bool preserveDstPad) const { |
| |
| if (0 == dstRowBytes) { |
| dstRowBytes = fRowBytes; |
| } |
| |
| if (dstRowBytes < fInfo.minRowBytes() || |
| dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) { |
| return false; |
| } |
| |
| if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
| size_t safeSize = this->getSafeSize(); |
| if (safeSize > dstSize || safeSize == 0) |
| return false; |
| else { |
| SkAutoLockPixels lock(*this); |
| // This implementation will write bytes beyond the end of each row, |
| // excluding the last row, if the bitmap's stride is greater than |
| // strictly required by the current config. |
| memcpy(dst, getPixels(), safeSize); |
| |
| return true; |
| } |
| } else { |
| // If destination has different stride than us, then copy line by line. |
| if (fInfo.getSafeSize(dstRowBytes) > dstSize) { |
| return false; |
| } else { |
| // Just copy what we need on each line. |
| size_t rowBytes = fInfo.minRowBytes(); |
| SkAutoLockPixels lock(*this); |
| const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| for (int row = 0; row < fInfo.fHeight; |
| row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| memcpy(dstP, srcP, rowBytes); |
| } |
| |
| return true; |
| } |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkBitmap::isImmutable() const { |
| return fPixelRef ? fPixelRef->isImmutable() : false; |
| } |
| |
| void SkBitmap::setImmutable() { |
| if (fPixelRef) { |
| fPixelRef->setImmutable(); |
| } |
| } |
| |
| bool SkBitmap::isVolatile() const { |
| return (fFlags & kImageIsVolatile_Flag) != 0; |
| } |
| |
| void SkBitmap::setIsVolatile(bool isVolatile) { |
| if (isVolatile) { |
| fFlags |= kImageIsVolatile_Flag; |
| } else { |
| fFlags &= ~kImageIsVolatile_Flag; |
| } |
| } |
| |
| void* SkBitmap::getAddr(int x, int y) const { |
| SkASSERT((unsigned)x < (unsigned)this->width()); |
| SkASSERT((unsigned)y < (unsigned)this->height()); |
| |
| char* base = (char*)this->getPixels(); |
| if (base) { |
| base += y * this->rowBytes(); |
| switch (this->colorType()) { |
| case kRGBA_8888_SkColorType: |
| case kBGRA_8888_SkColorType: |
| base += x << 2; |
| break; |
| case kARGB_4444_SkColorType: |
| case kRGB_565_SkColorType: |
| base += x << 1; |
| break; |
| case kAlpha_8_SkColorType: |
| case kIndex_8_SkColorType: |
| base += x; |
| break; |
| default: |
| SkDEBUGFAIL("Can't return addr for config"); |
| base = NULL; |
| break; |
| } |
| } |
| return base; |
| } |
| |
| SkColor SkBitmap::getColor(int x, int y) const { |
| SkASSERT((unsigned)x < (unsigned)this->width()); |
| SkASSERT((unsigned)y < (unsigned)this->height()); |
| |
| switch (this->colorType()) { |
| case kAlpha_8_SkColorType: { |
| uint8_t* addr = this->getAddr8(x, y); |
| return SkColorSetA(0, addr[0]); |
| } |
| case kIndex_8_SkColorType: { |
| SkPMColor c = this->getIndex8Color(x, y); |
| return SkUnPreMultiply::PMColorToColor(c); |
| } |
| case kRGB_565_SkColorType: { |
| uint16_t* addr = this->getAddr16(x, y); |
| return SkPixel16ToColor(addr[0]); |
| } |
| case kARGB_4444_SkColorType: { |
| uint16_t* addr = this->getAddr16(x, y); |
| SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| return SkUnPreMultiply::PMColorToColor(c); |
| } |
| case kBGRA_8888_SkColorType: |
| case kRGBA_8888_SkColorType: { |
| uint32_t* addr = this->getAddr32(x, y); |
| return SkUnPreMultiply::PMColorToColor(addr[0]); |
| } |
| default: |
| SkASSERT(false); |
| return 0; |
| } |
| SkASSERT(false); // Not reached. |
| return 0; |
| } |
| |
| bool SkBitmap::ComputeIsOpaque(const SkBitmap& bm) { |
| SkAutoLockPixels alp(bm); |
| if (!bm.getPixels()) { |
| return false; |
| } |
| |
| const int height = bm.height(); |
| const int width = bm.width(); |
| |
| switch (bm.colorType()) { |
| case kAlpha_8_SkColorType: { |
| unsigned a = 0xFF; |
| for (int y = 0; y < height; ++y) { |
| const uint8_t* row = bm.getAddr8(0, y); |
| for (int x = 0; x < width; ++x) { |
| a &= row[x]; |
| } |
| if (0xFF != a) { |
| return false; |
| } |
| } |
| return true; |
| } break; |
| case kIndex_8_SkColorType: { |
| SkAutoLockColors alc(bm); |
| const SkPMColor* table = alc.colors(); |
| if (!table) { |
| return false; |
| } |
| SkPMColor c = (SkPMColor)~0; |
| for (int i = bm.getColorTable()->count() - 1; i >= 0; --i) { |
| c &= table[i]; |
| } |
| return 0xFF == SkGetPackedA32(c); |
| } break; |
| case kRGB_565_SkColorType: |
| return true; |
| break; |
| case kARGB_4444_SkColorType: { |
| unsigned c = 0xFFFF; |
| for (int y = 0; y < height; ++y) { |
| const SkPMColor16* row = bm.getAddr16(0, y); |
| for (int x = 0; x < width; ++x) { |
| c &= row[x]; |
| } |
| if (0xF != SkGetPackedA4444(c)) { |
| return false; |
| } |
| } |
| return true; |
| } break; |
| case kBGRA_8888_SkColorType: |
| case kRGBA_8888_SkColorType: { |
| SkPMColor c = (SkPMColor)~0; |
| for (int y = 0; y < height; ++y) { |
| const SkPMColor* row = bm.getAddr32(0, y); |
| for (int x = 0; x < width; ++x) { |
| c &= row[x]; |
| } |
| if (0xFF != SkGetPackedA32(c)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static uint16_t pack_8888_to_4444(unsigned a, unsigned r, unsigned g, unsigned b) { |
| unsigned pixel = (SkA32To4444(a) << SK_A4444_SHIFT) | |
| (SkR32To4444(r) << SK_R4444_SHIFT) | |
| (SkG32To4444(g) << SK_G4444_SHIFT) | |
| (SkB32To4444(b) << SK_B4444_SHIFT); |
| return SkToU16(pixel); |
| } |
| |
| void SkBitmap::internalErase(const SkIRect& area, |
| U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| #ifdef SK_DEBUG |
| SkDEBUGCODE(this->validate();) |
| SkASSERT(!area.isEmpty()); |
| { |
| SkIRect total = { 0, 0, this->width(), this->height() }; |
| SkASSERT(total.contains(area)); |
| } |
| #endif |
| |
| switch (fInfo.colorType()) { |
| case kUnknown_SkColorType: |
| case kIndex_8_SkColorType: |
| return; // can't erase. Should we bzero so the memory is not uninitialized? |
| default: |
| break; |
| } |
| |
| SkAutoLockPixels alp(*this); |
| // perform this check after the lock call |
| if (!this->readyToDraw()) { |
| return; |
| } |
| |
| int height = area.height(); |
| const int width = area.width(); |
| const int rowBytes = fRowBytes; |
| |
| switch (this->colorType()) { |
| case kAlpha_8_SkColorType: { |
| uint8_t* p = this->getAddr8(area.fLeft, area.fTop); |
| while (--height >= 0) { |
| memset(p, a, width); |
| p += rowBytes; |
| } |
| break; |
| } |
| case kARGB_4444_SkColorType: |
| case kRGB_565_SkColorType: { |
| uint16_t* p = this->getAddr16(area.fLeft, area.fTop);; |
| uint16_t v; |
| |
| // make rgb premultiplied |
| if (255 != a) { |
| r = SkAlphaMul(r, a); |
| g = SkAlphaMul(g, a); |
| b = SkAlphaMul(b, a); |
| } |
| |
| if (kARGB_4444_SkColorType == this->colorType()) { |
| v = pack_8888_to_4444(a, r, g, b); |
| } else { |
| v = SkPackRGB16(r >> (8 - SK_R16_BITS), |
| g >> (8 - SK_G16_BITS), |
| b >> (8 - SK_B16_BITS)); |
| } |
| while (--height >= 0) { |
| sk_memset16(p, v, width); |
| p = (uint16_t*)((char*)p + rowBytes); |
| } |
| break; |
| } |
| case kBGRA_8888_SkColorType: |
| case kRGBA_8888_SkColorType: { |
| uint32_t* p = this->getAddr32(area.fLeft, area.fTop); |
| |
| if (255 != a && kPremul_SkAlphaType == this->alphaType()) { |
| r = SkAlphaMul(r, a); |
| g = SkAlphaMul(g, a); |
| b = SkAlphaMul(b, a); |
| } |
| uint32_t v = kRGBA_8888_SkColorType == this->colorType() ? |
| SkPackARGB_as_RGBA(a, r, g, b) : SkPackARGB_as_BGRA(a, r, g, b); |
| |
| while (--height >= 0) { |
| sk_memset32(p, v, width); |
| p = (uint32_t*)((char*)p + rowBytes); |
| } |
| break; |
| } |
| default: |
| return; // no change, so don't call notifyPixelsChanged() |
| } |
| |
| this->notifyPixelsChanged(); |
| } |
| |
| void SkBitmap::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| SkIRect area = { 0, 0, this->width(), this->height() }; |
| if (!area.isEmpty()) { |
| this->internalErase(area, a, r, g, b); |
| } |
| } |
| |
| void SkBitmap::eraseArea(const SkIRect& rect, SkColor c) const { |
| SkIRect area = { 0, 0, this->width(), this->height() }; |
| if (area.intersect(rect)) { |
| this->internalErase(area, SkColorGetA(c), SkColorGetR(c), |
| SkColorGetG(c), SkColorGetB(c)); |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////////////// |
| ////////////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| SkDEBUGCODE(this->validate();) |
| |
| if (NULL == result || NULL == fPixelRef) { |
| return false; // no src pixels |
| } |
| |
| SkIRect srcRect, r; |
| srcRect.set(0, 0, this->width(), this->height()); |
| if (!r.intersect(srcRect, subset)) { |
| return false; // r is empty (i.e. no intersection) |
| } |
| |
| if (fPixelRef->getTexture() != NULL) { |
| // Do a deep copy |
| SkPixelRef* pixelRef = fPixelRef->deepCopy(this->colorType(), &subset); |
| if (pixelRef != NULL) { |
| SkBitmap dst; |
| dst.setInfo(SkImageInfo::Make(subset.width(), subset.height(), |
| this->colorType(), this->alphaType())); |
| dst.setIsVolatile(this->isVolatile()); |
| dst.setPixelRef(pixelRef)->unref(); |
| SkDEBUGCODE(dst.validate()); |
| result->swap(dst); |
| return true; |
| } |
| } |
| |
| // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have |
| // exited above. |
| SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width())); |
| SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height())); |
| |
| SkBitmap dst; |
| dst.setInfo(SkImageInfo::Make(r.width(), r.height(), this->colorType(), this->alphaType()), |
| this->rowBytes()); |
| dst.setIsVolatile(this->isVolatile()); |
| |
| if (fPixelRef) { |
| SkIPoint origin = fPixelRefOrigin; |
| origin.fX += r.fLeft; |
| origin.fY += r.fTop; |
| // share the pixelref with a custom offset |
| dst.setPixelRef(fPixelRef, origin); |
| } |
| SkDEBUGCODE(dst.validate();) |
| |
| // we know we're good, so commit to result |
| result->swap(dst); |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkCanvas.h" |
| #include "SkPaint.h" |
| |
| bool SkBitmap::canCopyTo(SkColorType dstColorType) const { |
| const SkColorType srcCT = this->colorType(); |
| |
| if (srcCT == kUnknown_SkColorType) { |
| return false; |
| } |
| |
| bool sameConfigs = (srcCT == dstColorType); |
| switch (dstColorType) { |
| case kAlpha_8_SkColorType: |
| case kRGB_565_SkColorType: |
| case kRGBA_8888_SkColorType: |
| case kBGRA_8888_SkColorType: |
| break; |
| case kIndex_8_SkColorType: |
| if (!sameConfigs) { |
| return false; |
| } |
| break; |
| case kARGB_4444_SkColorType: |
| return sameConfigs || kN32_SkColorType == srcCT || kIndex_8_SkColorType == srcCT; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| #include "SkConfig8888.h" |
| |
| bool SkBitmap::readPixels(const SkImageInfo& requestedDstInfo, void* dstPixels, size_t dstRB, |
| int x, int y) const { |
| if (kUnknown_SkColorType == requestedDstInfo.colorType()) { |
| return false; |
| } |
| if (NULL == dstPixels || dstRB < requestedDstInfo.minRowBytes()) { |
| return false; |
| } |
| if (0 == requestedDstInfo.width() || 0 == requestedDstInfo.height()) { |
| return false; |
| } |
| |
| SkIRect srcR = SkIRect::MakeXYWH(x, y, requestedDstInfo.width(), requestedDstInfo.height()); |
| if (!srcR.intersect(0, 0, this->width(), this->height())) { |
| return false; |
| } |
| |
| SkImageInfo dstInfo = requestedDstInfo; |
| // the intersect may have shrunk info's logical size |
| dstInfo.fWidth = srcR.width(); |
| dstInfo.fHeight = srcR.height(); |
| |
| // if x or y are negative, then we have to adjust pixels |
| if (x > 0) { |
| x = 0; |
| } |
| if (y > 0) { |
| y = 0; |
| } |
| // here x,y are either 0 or negative |
| dstPixels = ((char*)dstPixels - y * dstRB - x * dstInfo.bytesPerPixel()); |
| |
| ////////////// |
| |
| SkAutoLockPixels alp(*this); |
| |
| // since we don't stop creating un-pixeled devices yet, check for no pixels here |
| if (NULL == this->getPixels()) { |
| return false; |
| } |
| |
| SkImageInfo srcInfo = this->info(); |
| srcInfo.fWidth = dstInfo.width(); |
| srcInfo.fHeight = dstInfo.height(); |
| |
| const void* srcPixels = this->getAddr(srcR.x(), srcR.y()); |
| return SkPixelInfo::CopyPixels(dstInfo, dstPixels, dstRB, srcInfo, srcPixels, this->rowBytes(), |
| this->getColorTable()); |
| } |
| |
| bool SkBitmap::copyTo(SkBitmap* dst, SkColorType dstColorType, Allocator* alloc) const { |
| if (!this->canCopyTo(dstColorType)) { |
| return false; |
| } |
| |
| // if we have a texture, first get those pixels |
| SkBitmap tmpSrc; |
| const SkBitmap* src = this; |
| |
| if (fPixelRef) { |
| SkIRect subset; |
| subset.setXYWH(fPixelRefOrigin.fX, fPixelRefOrigin.fY, |
| fInfo.width(), fInfo.height()); |
| if (fPixelRef->readPixels(&tmpSrc, &subset)) { |
| if (fPixelRef->info().alphaType() == kUnpremul_SkAlphaType) { |
| // FIXME: The only meaningful implementation of readPixels |
| // (GrPixelRef) assumes premultiplied pixels. |
| return false; |
| } |
| SkASSERT(tmpSrc.width() == this->width()); |
| SkASSERT(tmpSrc.height() == this->height()); |
| |
| // did we get lucky and we can just return tmpSrc? |
| if (tmpSrc.colorType() == dstColorType && NULL == alloc) { |
| dst->swap(tmpSrc); |
| // If the result is an exact copy, clone the gen ID. |
| if (dst->pixelRef() && dst->pixelRef()->info() == fPixelRef->info()) { |
| dst->pixelRef()->cloneGenID(*fPixelRef); |
| } |
| return true; |
| } |
| |
| // fall through to the raster case |
| src = &tmpSrc; |
| } |
| } |
| |
| // we lock this now, since we may need its colortable |
| SkAutoLockPixels srclock(*src); |
| if (!src->readyToDraw()) { |
| return false; |
| } |
| |
| // The only way to be readyToDraw is if fPixelRef is non NULL. |
| SkASSERT(fPixelRef != NULL); |
| |
| SkImageInfo dstInfo = src->info(); |
| dstInfo.fColorType = dstColorType; |
| |
| SkBitmap tmpDst; |
| if (!tmpDst.setInfo(dstInfo)) { |
| return false; |
| } |
| |
| // allocate colortable if srcConfig == kIndex8_Config |
| SkAutoTUnref<SkColorTable> ctable; |
| if (dstColorType == kIndex_8_SkColorType) { |
| // TODO: can we just ref() the src colortable? Is it reentrant-safe? |
| ctable.reset(SkNEW_ARGS(SkColorTable, (*src->getColorTable()))); |
| } |
| if (!tmpDst.allocPixels(alloc, ctable)) { |
| return false; |
| } |
| |
| if (!tmpDst.readyToDraw()) { |
| // allocator/lock failed |
| return false; |
| } |
| |
| // pixelRef must be non NULL or tmpDst.readyToDraw() would have |
| // returned false. |
| SkASSERT(tmpDst.pixelRef() != NULL); |
| |
| if (!src->readPixels(tmpDst.info(), tmpDst.getPixels(), tmpDst.rowBytes(), 0, 0)) { |
| return false; |
| } |
| |
| // (for BitmapHeap) Clone the pixelref genID even though we have a new pixelref. |
| // The old copyTo impl did this, so we continue it for now. |
| // |
| // TODO: should we ignore rowbytes (i.e. getSize)? Then it could just be |
| // if (src_pixelref->info == dst_pixelref->info) |
| // |
| if (src->colorType() == dstColorType && tmpDst.getSize() == src->getSize()) { |
| SkPixelRef* dstPixelRef = tmpDst.pixelRef(); |
| if (dstPixelRef->info() == fPixelRef->info()) { |
| dstPixelRef->cloneGenID(*fPixelRef); |
| } |
| } |
| |
| dst->swap(tmpDst); |
| return true; |
| } |
| |
| bool SkBitmap::deepCopyTo(SkBitmap* dst) const { |
| const SkColorType dstCT = this->colorType(); |
| |
| if (!this->canCopyTo(dstCT)) { |
| return false; |
| } |
| |
| // If we have a PixelRef, and it supports deep copy, use it. |
| // Currently supported only by texture-backed bitmaps. |
| if (fPixelRef) { |
| SkPixelRef* pixelRef = fPixelRef->deepCopy(dstCT, NULL); |
| if (pixelRef) { |
| uint32_t rowBytes; |
| if (this->colorType() == dstCT) { |
| // Since there is no subset to pass to deepCopy, and deepCopy |
| // succeeded, the new pixel ref must be identical. |
| SkASSERT(fPixelRef->info() == pixelRef->info()); |
| pixelRef->cloneGenID(*fPixelRef); |
| // Use the same rowBytes as the original. |
| rowBytes = fRowBytes; |
| } else { |
| // With the new config, an appropriate fRowBytes will be computed by setInfo. |
| rowBytes = 0; |
| } |
| |
| SkImageInfo info = fInfo; |
| info.fColorType = dstCT; |
| if (!dst->setInfo(info, rowBytes)) { |
| return false; |
| } |
| dst->setPixelRef(pixelRef, fPixelRefOrigin)->unref(); |
| return true; |
| } |
| } |
| |
| if (this->getTexture()) { |
| return false; |
| } else { |
| return this->copyTo(dst, dstCT, NULL); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
| int alphaRowBytes) { |
| SkASSERT(alpha != NULL); |
| SkASSERT(alphaRowBytes >= src.width()); |
| |
| SkColorType colorType = src.colorType(); |
| int w = src.width(); |
| int h = src.height(); |
| size_t rb = src.rowBytes(); |
| |
| SkAutoLockPixels alp(src); |
| if (!src.readyToDraw()) { |
| // zero out the alpha buffer and return |
| while (--h >= 0) { |
| memset(alpha, 0, w); |
| alpha += alphaRowBytes; |
| } |
| return false; |
| } |
| |
| if (kAlpha_8_SkColorType == colorType && !src.isOpaque()) { |
| const uint8_t* s = src.getAddr8(0, 0); |
| while (--h >= 0) { |
| memcpy(alpha, s, w); |
| s += rb; |
| alpha += alphaRowBytes; |
| } |
| } else if (kN32_SkColorType == colorType && !src.isOpaque()) { |
| const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| while (--h >= 0) { |
| for (int x = 0; x < w; x++) { |
| alpha[x] = SkGetPackedA32(s[x]); |
| } |
| s = (const SkPMColor*)((const char*)s + rb); |
| alpha += alphaRowBytes; |
| } |
| } else if (kARGB_4444_SkColorType == colorType && !src.isOpaque()) { |
| const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| while (--h >= 0) { |
| for (int x = 0; x < w; x++) { |
| alpha[x] = SkPacked4444ToA32(s[x]); |
| } |
| s = (const SkPMColor16*)((const char*)s + rb); |
| alpha += alphaRowBytes; |
| } |
| } else if (kIndex_8_SkColorType == colorType && !src.isOpaque()) { |
| SkColorTable* ct = src.getColorTable(); |
| if (ct) { |
| const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| while (--h >= 0) { |
| for (int x = 0; x < w; x++) { |
| alpha[x] = SkGetPackedA32(table[s[x]]); |
| } |
| s += rb; |
| alpha += alphaRowBytes; |
| } |
| ct->unlockColors(); |
| } |
| } else { // src is opaque, so just fill alpha[] with 0xFF |
| memset(alpha, 0xFF, h * alphaRowBytes); |
| } |
| return true; |
| } |
| |
| #include "SkPaint.h" |
| #include "SkMaskFilter.h" |
| #include "SkMatrix.h" |
| |
| bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
| Allocator *allocator, SkIPoint* offset) const { |
| SkDEBUGCODE(this->validate();) |
| |
| SkBitmap tmpBitmap; |
| SkMatrix identity; |
| SkMask srcM, dstM; |
| |
| srcM.fBounds.set(0, 0, this->width(), this->height()); |
| srcM.fRowBytes = SkAlign4(this->width()); |
| srcM.fFormat = SkMask::kA8_Format; |
| |
| SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| |
| // compute our (larger?) dst bounds if we have a filter |
| if (NULL != filter) { |
| identity.reset(); |
| srcM.fImage = NULL; |
| if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| goto NO_FILTER_CASE; |
| } |
| dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| } else { |
| NO_FILTER_CASE: |
| tmpBitmap.setInfo(SkImageInfo::MakeA8(this->width(), this->height()), srcM.fRowBytes); |
| if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| // Allocation of pixels for alpha bitmap failed. |
| SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| tmpBitmap.width(), tmpBitmap.height()); |
| return false; |
| } |
| GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
| if (offset) { |
| offset->set(0, 0); |
| } |
| tmpBitmap.swap(*dst); |
| return true; |
| } |
| srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
| |
| GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| goto NO_FILTER_CASE; |
| } |
| SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
| |
| tmpBitmap.setInfo(SkImageInfo::MakeA8(dstM.fBounds.width(), dstM.fBounds.height()), |
| dstM.fRowBytes); |
| if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| // Allocation of pixels for alpha bitmap failed. |
| SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| tmpBitmap.width(), tmpBitmap.height()); |
| return false; |
| } |
| memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
| if (offset) { |
| offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| } |
| SkDEBUGCODE(tmpBitmap.validate();) |
| |
| tmpBitmap.swap(*dst); |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkBitmap::WriteRawPixels(SkWriteBuffer* buffer, const SkBitmap& bitmap) { |
| const SkImageInfo info = bitmap.info(); |
| SkAutoLockPixels alp(bitmap); |
| if (0 == info.width() || 0 == info.height() || NULL == bitmap.getPixels()) { |
| buffer->writeUInt(0); // instead of snugRB, signaling no pixels |
| return; |
| } |
| |
| const size_t snugRB = info.width() * info.bytesPerPixel(); |
| const char* src = (const char*)bitmap.getPixels(); |
| const size_t ramRB = bitmap.rowBytes(); |
| |
| buffer->write32(SkToU32(snugRB)); |
| info.flatten(*buffer); |
| |
| const size_t size = snugRB * info.height(); |
| SkAutoMalloc storage(size); |
| char* dst = (char*)storage.get(); |
| for (int y = 0; y < info.height(); ++y) { |
| memcpy(dst, src, snugRB); |
| dst += snugRB; |
| src += ramRB; |
| } |
| buffer->writeByteArray(storage.get(), size); |
| |
| SkColorTable* ct = bitmap.getColorTable(); |
| if (kIndex_8_SkColorType == info.colorType() && ct) { |
| buffer->writeBool(true); |
| ct->writeToBuffer(*buffer); |
| } else { |
| buffer->writeBool(false); |
| } |
| } |
| |
| bool SkBitmap::ReadRawPixels(SkReadBuffer* buffer, SkBitmap* bitmap) { |
| const size_t snugRB = buffer->readUInt(); |
| if (0 == snugRB) { // no pixels |
| return false; |
| } |
| |
| SkImageInfo info; |
| info.unflatten(*buffer); |
| |
| // If there was an error reading "info", don't use it to compute minRowBytes() |
| if (!buffer->validate(true)) { |
| return false; |
| } |
| |
| const size_t ramRB = info.minRowBytes(); |
| const int height = info.height(); |
| const size_t snugSize = snugRB * height; |
| const size_t ramSize = ramRB * height; |
| if (!buffer->validate(snugSize <= ramSize)) { |
| return false; |
| } |
| |
| char* dst = (char*)sk_malloc_throw(ramSize); |
| buffer->readByteArray(dst, snugSize); |
| SkAutoDataUnref data(SkData::NewFromMalloc(dst, ramSize)); |
| |
| if (snugSize != ramSize) { |
| const char* srcRow = dst + snugRB * (height - 1); |
| char* dstRow = dst + ramRB * (height - 1); |
| for (int y = height - 1; y >= 1; --y) { |
| memmove(dstRow, srcRow, snugRB); |
| srcRow -= snugRB; |
| dstRow -= ramRB; |
| } |
| SkASSERT(srcRow == dstRow); // first row does not need to be moved |
| } |
| |
| SkAutoTUnref<SkColorTable> ctable; |
| if (buffer->readBool()) { |
| ctable.reset(SkNEW_ARGS(SkColorTable, (*buffer))); |
| } |
| |
| SkAutoTUnref<SkPixelRef> pr(SkMallocPixelRef::NewWithData(info, info.minRowBytes(), |
| ctable.get(), data.get())); |
| bitmap->setInfo(pr->info()); |
| bitmap->setPixelRef(pr, 0, 0); |
| return true; |
| } |
| |
| enum { |
| SERIALIZE_PIXELTYPE_NONE, |
| SERIALIZE_PIXELTYPE_REF_DATA |
| }; |
| |
| void SkBitmap::legacyUnflatten(SkReadBuffer& buffer) { |
| #ifdef SK_SUPPORT_LEGACY_PIXELREF_UNFLATTENABLE |
| this->reset(); |
| |
| SkImageInfo info; |
| info.unflatten(buffer); |
| size_t rowBytes = buffer.readInt(); |
| if (!buffer.validate((info.width() >= 0) && (info.height() >= 0) && |
| SkColorTypeIsValid(info.fColorType) && |
| SkAlphaTypeIsValid(info.fAlphaType) && |
| SkColorTypeValidateAlphaType(info.fColorType, info.fAlphaType) && |
| info.validRowBytes(rowBytes))) { |
| return; |
| } |
| |
| bool configIsValid = this->setInfo(info, rowBytes); |
| buffer.validate(configIsValid); |
| |
| int reftype = buffer.readInt(); |
| if (buffer.validate((SERIALIZE_PIXELTYPE_REF_DATA == reftype) || |
| (SERIALIZE_PIXELTYPE_NONE == reftype))) { |
| switch (reftype) { |
| case SERIALIZE_PIXELTYPE_REF_DATA: { |
| SkIPoint origin; |
| origin.fX = buffer.readInt(); |
| origin.fY = buffer.readInt(); |
| size_t offset = origin.fY * rowBytes + origin.fX * info.bytesPerPixel(); |
| SkPixelRef* pr = buffer.readFlattenable<SkPixelRef>(); |
| if (!buffer.validate((NULL == pr) || |
| (pr->getAllocatedSizeInBytes() >= (offset + this->getSafeSize())))) { |
| origin.setZero(); |
| } |
| SkSafeUnref(this->setPixelRef(pr, origin)); |
| break; |
| } |
| case SERIALIZE_PIXELTYPE_NONE: |
| break; |
| default: |
| SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
| sk_throw(); |
| } |
| } |
| #else |
| sk_throw(); |
| #endif |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| fHeight = height; |
| fYPtrs = (uint8_t**)sk_calloc_throw(height * sizeof(uint8_t*)); |
| } |
| |
| SkBitmap::RLEPixels::~RLEPixels() { |
| sk_free(fYPtrs); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #ifdef SK_DEBUG |
| void SkBitmap::validate() const { |
| fInfo.validate(); |
| |
| // ImageInfo may not require this, but Bitmap ensures that opaque-only |
| // colorTypes report opaque for their alphatype |
| if (kRGB_565_SkColorType == fInfo.colorType()) { |
| SkASSERT(kOpaque_SkAlphaType == fInfo.alphaType()); |
| } |
| |
| SkASSERT(fInfo.validRowBytes(fRowBytes)); |
| uint8_t allFlags = kImageIsVolatile_Flag; |
| #ifdef SK_BUILD_FOR_ANDROID |
| allFlags |= kHasHardwareMipMap_Flag; |
| #endif |
| SkASSERT((~allFlags & fFlags) == 0); |
| SkASSERT(fPixelLockCount >= 0); |
| |
| if (fPixels) { |
| SkASSERT(fPixelRef); |
| SkASSERT(fPixelLockCount > 0); |
| SkASSERT(fPixelRef->isLocked()); |
| SkASSERT(fPixelRef->rowBytes() == fRowBytes); |
| SkASSERT(fPixelRefOrigin.fX >= 0); |
| SkASSERT(fPixelRefOrigin.fY >= 0); |
| SkASSERT(fPixelRef->info().width() >= (int)this->width() + fPixelRefOrigin.fX); |
| SkASSERT(fPixelRef->info().fHeight >= (int)this->height() + fPixelRefOrigin.fY); |
| SkASSERT(fPixelRef->rowBytes() >= fInfo.minRowBytes()); |
| } else { |
| SkASSERT(NULL == fColorTable); |
| } |
| } |
| #endif |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkBitmap::toString(SkString* str) const { |
| |
| static const char* gColorTypeNames[kLastEnum_SkColorType + 1] = { |
| "UNKNOWN", "A8", "565", "4444", "RGBA", "BGRA", "INDEX8", |
| }; |
| |
| str->appendf("bitmap: ((%d, %d) %s", this->width(), this->height(), |
| gColorTypeNames[this->colorType()]); |
| |
| str->append(" ("); |
| if (this->isOpaque()) { |
| str->append("opaque"); |
| } else { |
| str->append("transparent"); |
| } |
| if (this->isImmutable()) { |
| str->append(", immutable"); |
| } else { |
| str->append(", not-immutable"); |
| } |
| str->append(")"); |
| |
| SkPixelRef* pr = this->pixelRef(); |
| if (NULL == pr) { |
| // show null or the explicit pixel address (rare) |
| str->appendf(" pixels:%p", this->getPixels()); |
| } else { |
| const char* uri = pr->getURI(); |
| if (NULL != uri) { |
| str->appendf(" uri:\"%s\"", uri); |
| } else { |
| str->appendf(" pixelref:%p", pr); |
| } |
| } |
| |
| str->append(")"); |
| } |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #ifdef SK_DEBUG |
| void SkImageInfo::validate() const { |
| SkASSERT(fWidth >= 0); |
| SkASSERT(fHeight >= 0); |
| SkASSERT(SkColorTypeIsValid(fColorType)); |
| SkASSERT(SkAlphaTypeIsValid(fAlphaType)); |
| } |
| #endif |
