bool SkGradientShaderBase::DescriptorScope::unflatten(SkReadBuffer& buffer) {
fCount = buffer.getArrayCount();
if (fCount > kStorageCount) {
size_t allocSize = (sizeof(SkColor) + sizeof(SkScalar)) * fCount;
fDynamicStorage.reset(allocSize);
fColors = (SkColor*)fDynamicStorage.get();
fPos = (SkScalar*)(fColors + fCount);
} else {
fColors = fColorStorage;
fPos = fPosStorage;
}
if (!buffer.readColorArray(const_cast<SkColor*>(fColors), fCount)) {
return false;
}
if (buffer.readBool()) {
if (!buffer.readScalarArray(const_cast<SkScalar*>(fPos), fCount)) {
return false;
}
} else {
fPos = nullptr;
}
fTileMode = (SkShader::TileMode)buffer.read32();
fGradFlags = buffer.read32();
if (buffer.readBool()) {
fLocalMatrix = &fLocalMatrixStorage;
buffer.readMatrix(&fLocalMatrixStorage);
} else {
fLocalMatrix = nullptr;
}
return buffer.isValid();
}
SkEmbossMaskFilter::SkEmbossMaskFilter(SkReadBuffer& buffer)
: SkMaskFilter(buffer) {
SkASSERT(buffer.getArrayCount() == sizeof(Light));
buffer.readByteArray(&fLight, sizeof(Light));
SkASSERT(fLight.fPad == 0); // for the font-cache lookup to be clean
fBlurSigma = buffer.readScalar();
}
sk_sp<SkFlattenable> SkMatrixConvolutionImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
SkISize kernelSize;
kernelSize.fWidth = buffer.readInt();
kernelSize.fHeight = buffer.readInt();
const int count = buffer.getArrayCount();
const int64_t kernelArea = sk_64_mul(kernelSize.width(), kernelSize.height());
if (!buffer.validate(kernelArea == count)) {
return nullptr;
}
SkAutoSTArray<16, SkScalar> kernel(count);
if (!buffer.readScalarArray(kernel.get(), count)) {
return nullptr;
}
SkScalar gain = buffer.readScalar();
SkScalar bias = buffer.readScalar();
SkIPoint kernelOffset;
kernelOffset.fX = buffer.readInt();
kernelOffset.fY = buffer.readInt();
TileMode tileMode = (TileMode)buffer.readInt();
bool convolveAlpha = buffer.readBool();
return Make(kernelSize, kernel.get(), gain, bias, kernelOffset, tileMode,
convolveAlpha, common.getInput(0), &common.cropRect());
}
SkDashPathEffect::SkDashPathEffect(SkReadBuffer& buffer) : INHERITED(buffer) {
bool useOldPic = buffer.isVersionLT(SkReadBuffer::kDashWritesPhaseIntervals_Version);
if (useOldPic) {
fInitialDashIndex = buffer.readInt();
fInitialDashLength = buffer.readScalar();
fIntervalLength = buffer.readScalar();
buffer.readBool(); // Dummy for old ScalarToFit field
} else {
fPhase = buffer.readScalar();
}
fCount = buffer.getArrayCount();
size_t allocSize = sizeof(SkScalar) * fCount;
if (buffer.validateAvailable(allocSize)) {
fIntervals = (SkScalar*)sk_malloc_throw(allocSize);
buffer.readScalarArray(fIntervals, fCount);
} else {
fIntervals = NULL;
}
if (useOldPic) {
fPhase = 0;
if (fInitialDashLength != -1) { // Signal for bad dash interval
for (int i = 0; i < fInitialDashIndex; ++i) {
fPhase += fIntervals[i];
}
fPhase += fIntervals[fInitialDashIndex] - fInitialDashLength;
}
} else {
this->setInternalMembers(fPhase);
}
}
void SkColorTable::Skip(SkReadBuffer& buffer) {
const int count = buffer.getArrayCount();
if (count < 0 || count > 256) {
buffer.validate(false);
} else {
buffer.skip(count * sizeof(SkPMColor));
}
}
sk_sp<SkFlattenable> SkDashPathEffect::CreateProc(SkReadBuffer& buffer) {
const SkScalar phase = buffer.readScalar();
uint32_t count = buffer.getArrayCount();
SkAutoSTArray<32, SkScalar> intervals(count);
if (buffer.readScalarArray(intervals.get(), count)) {
return Make(intervals.get(), SkToInt(count), phase);
}
return nullptr;
}
SkMergeImageFilter::SkMergeImageFilter(SkReadBuffer& buffer)
: INHERITED(-1, buffer) {
bool hasModes = buffer.readBool();
if (hasModes) {
this->initAllocModes();
int nbInputs = countInputs();
size_t size = nbInputs * sizeof(fModes[0]);
SkASSERT(buffer.getArrayCount() == size);
if (buffer.validate(buffer.getArrayCount() == size) &&
buffer.readByteArray(fModes, size)) {
for (int i = 0; i < nbInputs; ++i) {
buffer.validate(SkIsValidMode((SkXfermode::Mode)fModes[i]));
}
}
} else {
fModes = 0;
}
}
SkColorTable::SkColorTable(SkReadBuffer& buffer) {
if (buffer.isVersionLT(SkReadBuffer::kRemoveColorTableAlpha_Version)) {
/*fAlphaType = */buffer.readUInt();
}
fCount = buffer.getArrayCount();
size_t allocSize = fCount * sizeof(SkPMColor);
SkDEBUGCODE(bool success = false;)
if (buffer.validateAvailable(allocSize)) {
SkDashPathEffect::SkDashPathEffect(SkReadBuffer& buffer) : INHERITED(buffer) {
fInitialDashIndex = buffer.readInt();
fInitialDashLength = buffer.readScalar();
fIntervalLength = buffer.readScalar();
fScaleToFit = buffer.readBool();
fCount = buffer.getArrayCount();
size_t allocSize = sizeof(SkScalar) * fCount;
if (buffer.validateAvailable(allocSize)) {
fIntervals = (SkScalar*)sk_malloc_throw(allocSize);
buffer.readScalarArray(fIntervals, fCount);
} else {
fIntervals = NULL;
}
}
sk_sp<SkFlattenable> SkDashImpl::CreateProc(SkReadBuffer& buffer) {
const SkScalar phase = buffer.readScalar();
uint32_t count = buffer.getArrayCount();
// Don't allocate gigantic buffers if there's not data for them.
if (count > buffer.size() / sizeof(SkScalar)) {
return nullptr;
}
SkAutoSTArray<32, SkScalar> intervals(count);
if (buffer.readScalarArray(intervals.get(), count)) {
return SkDashPathEffect::Make(intervals.get(), SkToInt(count), phase);
}
return nullptr;
}
SkGradientShaderBase::SkGradientShaderBase(SkReadBuffer& buffer) : INHERITED(buffer) {
if (buffer.isVersionLT(SkReadBuffer::kNoUnitMappers_Version)) {
// skip the old SkUnitMapper slot
buffer.skipFlattenable();
}
int colorCount = fColorCount = buffer.getArrayCount();
if (colorCount > kColorStorageCount) {
size_t allocSize = (sizeof(SkColor) + sizeof(SkScalar) + sizeof(Rec)) * colorCount;
if (buffer.validateAvailable(allocSize)) {
fOrigColors = reinterpret_cast<SkColor*>(sk_malloc_throw(allocSize));
} else {
fOrigColors = NULL;
colorCount = fColorCount = 0;
}
} else {
fOrigColors = fStorage;
}
buffer.readColorArray(fOrigColors, colorCount);
fOrigPos = (SkScalar*)(fOrigColors + colorCount);
{
uint32_t packed = buffer.readUInt();
fGradFlags = SkToU8(unpack_flags(packed));
fTileMode = unpack_mode(packed);
}
fTileProc = gTileProcs[fTileMode];
fRecs = (Rec*)(fOrigPos + colorCount);
if (colorCount > 2) {
Rec* recs = fRecs;
recs[0].fPos = 0;
fOrigPos[0] = 0;
for (int i = 1; i < colorCount; i++) {
recs[i].fPos = buffer.readInt();
recs[i].fScale = buffer.readUInt();
fOrigPos[i] = SkFixedToScalar(recs[i].fPos);
}
} else {
fOrigPos = NULL;
}
buffer.readMatrix(&fPtsToUnit);
this->initCommon();
}
SkImageRef::SkImageRef(SkReadBuffer& buffer, SkBaseMutex* mutex)
: INHERITED(buffer, mutex), fErrorInDecoding(false) {
fSampleSize = buffer.readInt();
fDoDither = buffer.readBool();
size_t length = buffer.getArrayCount();
if (buffer.validateAvailable(length)) {
fStream = SkNEW_ARGS(SkMemoryStream, (length));
buffer.readByteArray((void*)fStream->getMemoryBase(), length);
} else {
fStream = NULL;
}
fPrev = fNext = NULL;
fFactory = NULL;
// This sets the colortype/alphatype to exactly match our info, so that this
// can get communicated down to the codec.
fBitmap.setInfo(this->info());
}
SkDashPathEffect::SkDashPathEffect(SkReadBuffer& buffer)
: INHERITED(buffer)
, fPhase(0)
, fInitialDashLength(0)
, fInitialDashIndex(0)
, fIntervalLength(0) {
bool useOldPic = buffer.isVersionLT(SkReadBuffer::kDashWritesPhaseIntervals_Version);
if (useOldPic) {
fInitialDashIndex = buffer.readInt();
fInitialDashLength = buffer.readScalar();
fIntervalLength = buffer.readScalar();
buffer.readBool(); // Dummy for old ScalarToFit field
} else {
fPhase = buffer.readScalar();
}
fCount = buffer.getArrayCount();
size_t allocSize = sizeof(SkScalar) * fCount;
if (buffer.validateAvailable(allocSize)) {
fIntervals = (SkScalar*)sk_malloc_throw(allocSize);
buffer.readScalarArray(fIntervals, fCount);
} else {
fIntervals = NULL;
}
if (useOldPic) {
fPhase = 0;
if (fInitialDashLength != -1) { // Signal for bad dash interval
for (int i = 0; i < fInitialDashIndex; ++i) {
fPhase += fIntervals[i];
}
fPhase += fIntervals[fInitialDashIndex] - fInitialDashLength;
}
} else {
// set the internal data members, fPhase should have been between 0 and intervalLength
// when written to buffer so no need to adjust it
SkDashPath::CalcDashParameters(fPhase, fIntervals, fCount,
&fInitialDashLength, &fInitialDashIndex, &fIntervalLength);
}
}
SkTableMaskFilter::SkTableMaskFilter(SkReadBuffer& rb) : INHERITED(rb) {
SkASSERT(256 == rb.getArrayCount());
rb.readByteArray(fTable, 256);
}
