diff options
Diffstat (limited to 'chromium/third_party/skia/src/core/SkOrderedWriteBuffer.cpp')
| -rw-r--r-- | chromium/third_party/skia/src/core/SkOrderedWriteBuffer.cpp | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/chromium/third_party/skia/src/core/SkOrderedWriteBuffer.cpp b/chromium/third_party/skia/src/core/SkOrderedWriteBuffer.cpp deleted file mode 100644 index 25ca769168d..00000000000 --- a/chromium/third_party/skia/src/core/SkOrderedWriteBuffer.cpp +++ /dev/null @@ -1,319 +0,0 @@ - -/* - * Copyright 2012 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "SkOrderedWriteBuffer.h" -#include "SkBitmap.h" -#include "SkData.h" -#include "SkPtrRecorder.h" -#include "SkStream.h" -#include "SkTypeface.h" - -SkOrderedWriteBuffer::SkOrderedWriteBuffer(size_t minSize) - : INHERITED() - , fFactorySet(NULL) - , fNamedFactorySet(NULL) - , fWriter(minSize) - , fBitmapHeap(NULL) - , fTFSet(NULL) - , fBitmapEncoder(NULL) { -} - -SkOrderedWriteBuffer::SkOrderedWriteBuffer(size_t minSize, void* storage, size_t storageSize) - : INHERITED() - , fFactorySet(NULL) - , fNamedFactorySet(NULL) - , fWriter(minSize, storage, storageSize) - , fBitmapHeap(NULL) - , fTFSet(NULL) - , fBitmapEncoder(NULL) { -} - -SkOrderedWriteBuffer::~SkOrderedWriteBuffer() { - SkSafeUnref(fFactorySet); - SkSafeUnref(fNamedFactorySet); - SkSafeUnref(fBitmapHeap); - SkSafeUnref(fTFSet); -} - -void SkOrderedWriteBuffer::writeByteArray(const void* data, size_t size) { - fWriter.write32(size); - fWriter.writePad(data, size); -} - -void SkOrderedWriteBuffer::writeBool(bool value) { - fWriter.writeBool(value); -} - -void SkOrderedWriteBuffer::writeFixed(SkFixed value) { - fWriter.write32(value); -} - -void SkOrderedWriteBuffer::writeScalar(SkScalar value) { - fWriter.writeScalar(value); -} - -void SkOrderedWriteBuffer::writeScalarArray(const SkScalar* value, uint32_t count) { - fWriter.write32(count); - fWriter.write(value, count * sizeof(SkScalar)); -} - -void SkOrderedWriteBuffer::writeInt(int32_t value) { - fWriter.write32(value); -} - -void SkOrderedWriteBuffer::writeIntArray(const int32_t* value, uint32_t count) { - fWriter.write32(count); - fWriter.write(value, count * sizeof(int32_t)); -} - -void SkOrderedWriteBuffer::writeUInt(uint32_t value) { - fWriter.write32(value); -} - -void SkOrderedWriteBuffer::write32(int32_t value) { - fWriter.write32(value); -} - -void SkOrderedWriteBuffer::writeString(const char* value) { - fWriter.writeString(value); -} - -void SkOrderedWriteBuffer::writeEncodedString(const void* value, size_t byteLength, - SkPaint::TextEncoding encoding) { - fWriter.writeInt(encoding); - fWriter.writeInt(byteLength); - fWriter.write(value, byteLength); -} - - -void SkOrderedWriteBuffer::writeColor(const SkColor& color) { - fWriter.write32(color); -} - -void SkOrderedWriteBuffer::writeColorArray(const SkColor* color, uint32_t count) { - fWriter.write32(count); - fWriter.write(color, count * sizeof(SkColor)); -} - -void SkOrderedWriteBuffer::writePoint(const SkPoint& point) { - fWriter.writeScalar(point.fX); - fWriter.writeScalar(point.fY); -} - -void SkOrderedWriteBuffer::writePointArray(const SkPoint* point, uint32_t count) { - fWriter.write32(count); - fWriter.write(point, count * sizeof(SkPoint)); -} - -void SkOrderedWriteBuffer::writeMatrix(const SkMatrix& matrix) { - fWriter.writeMatrix(matrix); -} - -void SkOrderedWriteBuffer::writeIRect(const SkIRect& rect) { - fWriter.write(&rect, sizeof(SkIRect)); -} - -void SkOrderedWriteBuffer::writeRect(const SkRect& rect) { - fWriter.writeRect(rect); -} - -void SkOrderedWriteBuffer::writeRegion(const SkRegion& region) { - fWriter.writeRegion(region); -} - -void SkOrderedWriteBuffer::writePath(const SkPath& path) { - fWriter.writePath(path); -} - -size_t SkOrderedWriteBuffer::writeStream(SkStream* stream, size_t length) { - fWriter.write32(length); - size_t bytesWritten = fWriter.readFromStream(stream, length); - if (bytesWritten < length) { - fWriter.reservePad(length - bytesWritten); - } - return bytesWritten; -} - -bool SkOrderedWriteBuffer::writeToStream(SkWStream* stream) { - return fWriter.writeToStream(stream); -} - -// Defined in SkBitmap.cpp -bool get_upper_left_from_offset(SkBitmap::Config config, size_t offset, size_t rowBytes, - int32_t* x, int32_t* y); - -void SkOrderedWriteBuffer::writeBitmap(const SkBitmap& bitmap) { - // Record the width and height. This way if readBitmap fails a dummy bitmap can be drawn at the - // right size. - this->writeInt(bitmap.width()); - this->writeInt(bitmap.height()); - - // Record information about the bitmap in one of three ways, in order of priority: - // 1. If there is an SkBitmapHeap, store it in the heap. The client can avoid serializing the - // bitmap entirely or serialize it later as desired. A boolean value of true will be written - // to the stream to signify that a heap was used. - // 2. If there is a function for encoding bitmaps, use it to write an encoded version of the - // bitmap. After writing a boolean value of false, signifying that a heap was not used, write - // the size of the encoded data. A non-zero size signifies that encoded data was written. - // 3. Call SkBitmap::flatten. After writing a boolean value of false, signifying that a heap was - // not used, write a zero to signify that the data was not encoded. - bool useBitmapHeap = fBitmapHeap != NULL; - // Write a bool: true if the SkBitmapHeap is to be used, in which case the reader must use an - // SkBitmapHeapReader to read the SkBitmap. False if the bitmap was serialized another way. - this->writeBool(useBitmapHeap); - if (useBitmapHeap) { - SkASSERT(NULL == fBitmapEncoder); - int32_t slot = fBitmapHeap->insert(bitmap); - fWriter.write32(slot); - // crbug.com/155875 - // The generation ID is not required information. We write it to prevent collisions - // in SkFlatDictionary. It is possible to get a collision when a previously - // unflattened (i.e. stale) instance of a similar flattenable is in the dictionary - // and the instance currently being written is re-using the same slot from the - // bitmap heap. - fWriter.write32(bitmap.getGenerationID()); - return; - } - if (fBitmapEncoder != NULL) { - SkASSERT(NULL == fBitmapHeap); - size_t offset = 0; - SkAutoDataUnref data(fBitmapEncoder(&offset, bitmap)); - if (data.get() != NULL) { - // Write the length to indicate that the bitmap was encoded successfully, followed - // by the actual data. - this->writeUInt(SkToU32(data->size())); - fWriter.writePad(data->data(), data->size()); - // Store the coordinate of the offset, rather than fPixelRefOffset, which may be - // different depending on the decoder. - int32_t x, y; - if (0 == offset || !get_upper_left_from_offset(bitmap.config(), offset, - bitmap.rowBytes(), &x, &y)) { - x = y = 0; - } - this->write32(x); - this->write32(y); - return; - } - } - // Bitmap was not encoded. Record a zero, implying that the reader need not decode. - this->writeUInt(0); - bitmap.flatten(*this); -} - -void SkOrderedWriteBuffer::writeTypeface(SkTypeface* obj) { - if (NULL == obj || NULL == fTFSet) { - fWriter.write32(0); - } else { - fWriter.write32(fTFSet->add(obj)); - } -} - -SkFactorySet* SkOrderedWriteBuffer::setFactoryRecorder(SkFactorySet* rec) { - SkRefCnt_SafeAssign(fFactorySet, rec); - if (fNamedFactorySet != NULL) { - fNamedFactorySet->unref(); - fNamedFactorySet = NULL; - } - return rec; -} - -SkNamedFactorySet* SkOrderedWriteBuffer::setNamedFactoryRecorder(SkNamedFactorySet* rec) { - SkRefCnt_SafeAssign(fNamedFactorySet, rec); - if (fFactorySet != NULL) { - fFactorySet->unref(); - fFactorySet = NULL; - } - return rec; -} - -SkRefCntSet* SkOrderedWriteBuffer::setTypefaceRecorder(SkRefCntSet* rec) { - SkRefCnt_SafeAssign(fTFSet, rec); - return rec; -} - -void SkOrderedWriteBuffer::setBitmapHeap(SkBitmapHeap* bitmapHeap) { - SkRefCnt_SafeAssign(fBitmapHeap, bitmapHeap); - if (bitmapHeap != NULL) { - SkASSERT(NULL == fBitmapEncoder); - fBitmapEncoder = NULL; - } -} - -void SkOrderedWriteBuffer::setBitmapEncoder(SkPicture::EncodeBitmap bitmapEncoder) { - fBitmapEncoder = bitmapEncoder; - if (bitmapEncoder != NULL) { - SkASSERT(NULL == fBitmapHeap); - SkSafeUnref(fBitmapHeap); - fBitmapHeap = NULL; - } -} - -void SkOrderedWriteBuffer::writeFlattenable(const SkFlattenable* flattenable) { - /* - * If we have a factoryset, then the first 32bits tell us... - * 0: failure to write the flattenable - * >0: (1-based) index into the SkFactorySet or SkNamedFactorySet - * If we don't have a factoryset, then the first "ptr" is either the - * factory, or null for failure. - * - * The distinction is important, since 0-index is 32bits (always), but a - * 0-functionptr might be 32 or 64 bits. - */ - - SkFlattenable::Factory factory = NULL; - if (flattenable) { - factory = flattenable->getFactory(); - } - if (NULL == factory) { - if (this->isValidating()) { - this->writeString(""); - SkASSERT(NULL == flattenable); // We shouldn't get in here in this scenario - } else if (fFactorySet != NULL || fNamedFactorySet != NULL) { - this->write32(0); - } else { - this->writeFunctionPtr(NULL); - } - return; - } - - /* - * We can write 1 of 3 versions of the flattenable: - * 1. function-ptr : this is the fastest for the reader, but assumes that - * the writer and reader are in the same process. - * 2. index into fFactorySet : This is assumes the writer will later - * resolve the function-ptrs into strings for its reader. SkPicture - * does exactly this, by writing a table of names (matching the indices) - * up front in its serialized form. - * 3. index into fNamedFactorySet. fNamedFactorySet will also store the - * name. SkGPipe uses this technique so it can write the name to its - * stream before writing the flattenable. - */ - if (this->isValidating()) { - this->writeString(flattenable->getTypeName()); - } else if (fFactorySet) { - this->write32(fFactorySet->add(factory)); - } else if (fNamedFactorySet) { - int32_t index = fNamedFactorySet->find(factory); - this->write32(index); - if (0 == index) { - return; - } - } else { - this->writeFunctionPtr((void*)factory); - } - - // make room for the size of the flattened object - (void)fWriter.reserve(sizeof(uint32_t)); - // record the current size, so we can subtract after the object writes. - uint32_t offset = fWriter.bytesWritten(); - // now flatten the object - flattenObject(flattenable, *this); - uint32_t objSize = fWriter.bytesWritten() - offset; - // record the obj's size - *fWriter.peek32(offset - sizeof(uint32_t)) = objSize; -} |