blob: 6eb9ac3425767680edaaa09131b16b4ac3c39fb5 [file] [log] [blame]
* Copyright 2011 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkPicturePlayback_DEFINED
#define SkPicturePlayback_DEFINED
#include "SkPicture.h"
#include "SkReader32.h"
#include "SkBitmap.h"
#include "SkData.h"
#include "SkMatrix.h"
#include "SkOrderedReadBuffer.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkPathHeap.h"
#include "SkRegion.h"
#include "SkRRect.h"
#include "SkPictureFlat.h"
#include "SkThread.h"
class SkPictureRecord;
class SkStream;
class SkWStream;
class SkBBoxHierarchy;
class SkPictureStateTree;
struct SkPictInfo {
enum Flags {
kCrossProcess_Flag = 1 << 0,
kScalarIsFloat_Flag = 1 << 1,
kPtrIs64Bit_Flag = 1 << 2,
uint32_t fVersion;
uint32_t fWidth;
uint32_t fHeight;
uint32_t fFlags;
* Container for data that is needed to deep copy a SkPicture. The container
* enables the data to be generated once and reused for subsequent copies.
struct SkPictCopyInfo {
SkPictCopyInfo() : initialized(false), controller(1024) {}
bool initialized;
SkChunkFlatController controller;
SkTDArray<SkFlatData*> paintData;
class SkPicturePlayback {
SkPicturePlayback(const SkPicturePlayback& src, SkPictCopyInfo* deepCopyInfo = NULL);
explicit SkPicturePlayback(const SkPictureRecord& record, bool deepCopy = false);
static SkPicturePlayback* CreateFromStream(SkStream*, const SkPictInfo&,
virtual ~SkPicturePlayback();
void draw(SkCanvas& canvas, SkDrawPictureCallback*);
void serialize(SkWStream*, SkPicture::EncodeBitmap) const;
void dumpSize() const;
bool containsBitmaps() const;
// Can be called in the middle of playback (the draw() call). WIll abort the
// drawing and return from draw() after the "current" op code is done
void abort() { fAbortCurrentPlayback = true; }
bool parseStream(SkStream*, const SkPictInfo&,
virtual bool preDraw(int opIndex, int type);
virtual void postDraw(int opIndex);
class TextContainer {
size_t length() { return fByteLength; }
const void* text() { return (const void*) fText; }
size_t fByteLength;
const char* fText;
const SkBitmap& getBitmap(SkReader32& reader) {
const int index = reader.readInt();
if (SkBitmapHeap::INVALID_SLOT == index) {
#ifdef SK_DEBUG
SkDebugf("An invalid bitmap was recorded!\n");
return fBadBitmap;
return (*fBitmaps)[index];
const SkMatrix* getMatrix(SkReader32& reader) {
int index = reader.readInt();
if (index == 0) {
return NULL;
return &(*fMatrices)[index - 1];
const SkPath& getPath(SkReader32& reader) {
return (*fPathHeap)[reader.readInt() - 1];
SkPicture& getPicture(SkReader32& reader) {
int index = reader.readInt();
SkASSERT(index > 0 && index <= fPictureCount);
return *fPictureRefs[index - 1];
const SkPaint* getPaint(SkReader32& reader) {
int index = reader.readInt();
if (index == 0) {
return NULL;
return &(*fPaints)[index - 1];
const SkRect* getRectPtr(SkReader32& reader) {
if (reader.readBool()) {
return &reader.skipT<SkRect>();
} else {
return NULL;
const SkIRect* getIRectPtr(SkReader32& reader) {
if (reader.readBool()) {
return &reader.skipT<SkIRect>();
} else {
return NULL;
const SkRegion& getRegion(SkReader32& reader) {
int index = reader.readInt();
return (*fRegions)[index - 1];
void getText(SkReader32& reader, TextContainer* text) {
size_t length = text->fByteLength = reader.readInt();
text->fText = (const char*)reader.skip(length);
void init();
int size(size_t* sizePtr);
int bitmaps(size_t* size);
int paints(size_t* size);
int paths(size_t* size);
int regions(size_t* size);
void dumpBitmap(const SkBitmap& bitmap) const;
void dumpMatrix(const SkMatrix& matrix) const;
void dumpPaint(const SkPaint& paint) const;
void dumpPath(const SkPath& path) const;
void dumpPicture(const SkPicture& picture) const;
void dumpRegion(const SkRegion& region) const;
int dumpDrawType(char* bufferPtr, char* buffer, DrawType drawType);
int dumpInt(char* bufferPtr, char* buffer, char* name);
int dumpRect(char* bufferPtr, char* buffer, char* name);
int dumpPoint(char* bufferPtr, char* buffer, char* name);
void dumpPointArray(char** bufferPtrPtr, char* buffer, int count);
int dumpPtr(char* bufferPtr, char* buffer, char* name, void* ptr);
int dumpRectPtr(char* bufferPtr, char* buffer, char* name);
int dumpScalar(char* bufferPtr, char* buffer, char* name);
void dumpText(char** bufferPtrPtr, char* buffer);
void dumpStream();
void dump() const;
private: // these help us with reading/writing
bool parseStreamTag(SkStream*, const SkPictInfo&, uint32_t tag, size_t size,
bool parseBufferTag(SkOrderedReadBuffer&, uint32_t tag, size_t size);
void flattenToBuffer(SkOrderedWriteBuffer&) const;
// Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty
// bitmap allows playback to draw nothing and move on.
SkBitmap fBadBitmap;
SkAutoTUnref<SkBitmapHeap> fBitmapHeap;
SkAutoTUnref<SkPathHeap> fPathHeap;
SkTRefArray<SkBitmap>* fBitmaps;
SkTRefArray<SkMatrix>* fMatrices;
SkTRefArray<SkPaint>* fPaints;
SkTRefArray<SkRegion>* fRegions;
SkData* fOpData; // opcodes and parameters
SkPicture** fPictureRefs;
int fPictureCount;
SkBBoxHierarchy* fBoundingHierarchy;
SkPictureStateTree* fStateTree;
SkTypefacePlayback fTFPlayback;
SkFactoryPlayback* fFactoryPlayback;
SkMutex fDrawMutex;
bool fAbortCurrentPlayback;