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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPictureFlat.h"
#include "SkChecksum.h"
#include "SkColorFilter.h"
#include "SkDrawLooper.h"
#include "SkMaskFilter.h"
#include "SkRasterizer.h"
#include "SkShader.h"
#include "SkTypeface.h"
#include "SkXfermode.h"
SK_DEFINE_INST_COUNT(SkFlatController)
///////////////////////////////////////////////////////////////////////////////
SkTypefacePlayback::SkTypefacePlayback() : fCount(0), fArray(NULL) {}
SkTypefacePlayback::~SkTypefacePlayback() {
this->reset(NULL);
}
void SkTypefacePlayback::reset(const SkRefCntSet* rec) {
for (int i = 0; i < fCount; i++) {
SkASSERT(fArray[i]);
fArray[i]->unref();
}
SkDELETE_ARRAY(fArray);
if (rec!= NULL && rec->count() > 0) {
fCount = rec->count();
fArray = SkNEW_ARRAY(SkRefCnt*, fCount);
rec->copyToArray(fArray);
for (int i = 0; i < fCount; i++) {
fArray[i]->ref();
}
} else {
fCount = 0;
fArray = NULL;
}
}
void SkTypefacePlayback::setCount(int count) {
this->reset(NULL);
fCount = count;
fArray = SkNEW_ARRAY(SkRefCnt*, count);
sk_bzero(fArray, count * sizeof(SkRefCnt*));
}
SkRefCnt* SkTypefacePlayback::set(int index, SkRefCnt* obj) {
SkASSERT((unsigned)index < (unsigned)fCount);
SkRefCnt_SafeAssign(fArray[index], obj);
return obj;
}
///////////////////////////////////////////////////////////////////////////////
SkFlatController::SkFlatController()
: fBitmapHeap(NULL)
, fTypefaceSet(NULL)
, fTypefacePlayback(NULL)
, fFactorySet(NULL)
, fWriteBufferFlags(0) {}
SkFlatController::~SkFlatController() {
SkSafeUnref(fBitmapHeap);
SkSafeUnref(fTypefaceSet);
SkSafeUnref(fFactorySet);
}
void SkFlatController::setBitmapHeap(SkBitmapHeap* heap) {
SkRefCnt_SafeAssign(fBitmapHeap, heap);
}
void SkFlatController::setTypefaceSet(SkRefCntSet *set) {
SkRefCnt_SafeAssign(fTypefaceSet, set);
}
void SkFlatController::setTypefacePlayback(SkTypefacePlayback* playback) {
fTypefacePlayback = playback;
}
SkNamedFactorySet* SkFlatController::setNamedFactorySet(SkNamedFactorySet* set) {
SkRefCnt_SafeAssign(fFactorySet, set);
return set;
}
///////////////////////////////////////////////////////////////////////////////
SkFlatData* SkFlatData::Create(SkFlatController* controller, const void* obj,
int index, void (*flattenProc)(SkOrderedWriteBuffer&, const void*)) {
// a buffer of 256 bytes should be sufficient for most paints, regions,
// and matrices.
intptr_t storage[256];
SkOrderedWriteBuffer buffer(256, storage, sizeof(storage));
buffer.setBitmapHeap(controller->getBitmapHeap());
buffer.setTypefaceRecorder(controller->getTypefaceSet());
buffer.setNamedFactoryRecorder(controller->getNamedFactorySet());
buffer.setFlags(controller->getWriteBufferFlags());
flattenProc(buffer, obj);
uint32_t size = buffer.size();
SkASSERT(SkIsAlign4(size));
/**
* Allocate enough memory to hold
* 1. SkFlatData struct
* 2. flattenProc's data (4-byte aligned)
* 3. 4-byte sentinel
*/
size_t allocSize = sizeof(SkFlatData) + size + sizeof(uint32_t);
SkFlatData* result = (SkFlatData*) controller->allocThrow(allocSize);
result->setIndex(index);
result->setTopBotUnwritten();
result->fFlatSize = size;
// put the serialized contents into the data section of the new allocation
buffer.writeToMemory(result->data());
result->fChecksum = SkChecksum::Compute(result->data32(), size);
result->setSentinelAsCandidate();
return result;
}
void SkFlatData::unflatten(void* result,
void (*unflattenProc)(SkOrderedReadBuffer&, void*),
SkBitmapHeap* bitmapHeap,
SkTypefacePlayback* facePlayback) const {
SkOrderedReadBuffer buffer(this->data(), fFlatSize);
if (bitmapHeap) {
buffer.setBitmapStorage(bitmapHeap);
}
if (facePlayback) {
facePlayback->setupBuffer(buffer);
}
unflattenProc(buffer, result);
SkASSERT(fFlatSize == (int32_t)buffer.offset());
}
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