}
enum {
- // flatten/unflatten will never return a value larger than this
+ // writeTo/readFromMemory will never return a value larger than this
kMaxFlattenSize = 9 * sizeof(SkScalar) + sizeof(uint32_t)
};
// return the number of bytes written, whether or not buffer is null
- uint32_t flatten(void* buffer) const;
+ uint32_t writeToMemory(void* buffer) const;
// return the number of bytes read
- uint32_t unflatten(const void* buffer);
+ uint32_t readFromMemory(const void* buffer);
void dump() const;
void toDumpString(SkString*) const;
virtual const void* skip(size_t size) { return fReader.skip(size); }
virtual void readMatrix(SkMatrix* m) { fReader.readMatrix(m); }
- virtual void readPath(SkPath* p) { p->unflatten(fReader); }
+ virtual void readPath(SkPath* p) { fReader.readPath(p); }
+
virtual void readPoint(SkPoint* p) {
p->fX = fReader.readScalar();
p->fY = fReader.readScalar();
virtual size_t readFromStream(SkStream* s, size_t length) { return fWriter.readFromStream(s, length); }
virtual void writeMatrix(const SkMatrix& matrix) { fWriter.writeMatrix(matrix); }
- virtual void writePath(const SkPath& path) { path.flatten(fWriter); };
+ virtual void writePath(const SkPath& path) { fWriter.writePath(path); };
virtual void writePoint(const SkPoint& point) {
fWriter.writeScalar(point.fX);
fWriter.writeScalar(point.fY);
void dump(bool forceClose, const char title[] = NULL) const;
void dump() const;
- void flatten(SkWriter32&) const;
- void unflatten(SkReader32&);
+ /**
+ * Write the region to the buffer, and return the number of bytes written.
+ * If buffer is NULL, it still returns the number of bytes.
+ */
+ uint32_t writeToMemory(void* buffer) const;
+ /**
+ * Initialized the region from the buffer, returning the number
+ * of bytes actually read.
+ */
+ uint32_t readFromMemory(const void* buffer);
#ifdef SK_BUILD_FOR_ANDROID
uint32_t getGenerationID() const;
#define SkReader32_DEFINED
#include "SkMatrix.h"
+#include "SkPath.h"
#include "SkRegion.h"
#include "SkScalar.h"
int32_t readS32() { return this->readInt(); }
uint32_t readU32() { return this->readInt(); }
+ void readPath(SkPath* path) {
+ size_t size = path->readFromMemory(this->peek());
+ SkASSERT(SkAlign4(size) == size);
+ (void)this->skip(size);
+ }
+
void readMatrix(SkMatrix* matrix) {
- size_t size = matrix->unflatten(this->peek());
+ size_t size = matrix->readFromMemory(this->peek());
SkASSERT(SkAlign4(size) == size);
(void)this->skip(size);
}
void readRegion(SkRegion* rgn) {
- size_t size = rgn->unflatten(this->peek());
+ size_t size = rgn->readFromMemory(this->peek());
SkASSERT(SkAlign4(size) == size);
(void)this->skip(size);
}
* Write the region to the buffer, and return the number of bytes written.
* If buffer is NULL, it still returns the number of bytes.
*/
- uint32_t flatten(void* buffer) const;
+ uint32_t writeToMemory(void* buffer) const;
/**
* Initialized the region from the buffer, returning the number
* of bytes actually read.
*/
- uint32_t unflatten(const void* buffer);
+ uint32_t readFromMemory(const void* buffer);
/**
* Returns a reference to a global empty region. Just a convenience for
#include "SkTypes.h"
#include "SkScalar.h"
+#include "SkPath.h"
#include "SkPoint.h"
#include "SkRect.h"
#include "SkMatrix.h"
*(SkRect*)this->reserve(sizeof(rect)) = rect;
}
+ void writePath(const SkPath& path) {
+ size_t size = path.writeToMemory(NULL);
+ SkASSERT(SkAlign4(size) == size);
+ path.writeToMemory(this->reserve(size));
+ }
+
void writeMatrix(const SkMatrix& matrix) {
- size_t size = matrix.flatten(NULL);
+ size_t size = matrix.writeToMemory(NULL);
SkASSERT(SkAlign4(size) == size);
- matrix.flatten(this->reserve(size));
+ matrix.writeToMemory(this->reserve(size));
}
void writeRegion(const SkRegion& rgn) {
- size_t size = rgn.flatten(NULL);
+ size_t size = rgn.writeToMemory(NULL);
SkASSERT(SkAlign4(size) == size);
- rgn.flatten(this->reserve(size));
+ rgn.writeToMemory(this->reserve(size));
}
// write count bytes (must be a multiple of 4)
{
char buffer[1000];
- size_t size = tmp.flatten(NULL);
+ size_t size = tmp.writeToMemory(NULL);
SkASSERT(size <= sizeof(buffer));
- size_t size2 = tmp.flatten(buffer);
+ size_t size2 = tmp.writeToMemory(buffer);
SkASSERT(size == size2);
SkRegion tmp3;
- size2 = tmp3.unflatten(buffer);
+ size2 = tmp3.readFromMemory(buffer);
SkASSERT(size == size2);
SkASSERT(tmp3 == tmp);
///////////////////////////////////////////////////////////////////////////////
-uint32_t SkMatrix::flatten(void* buffer) const {
+uint32_t SkMatrix::writeToMemory(void* buffer) const {
// TODO write less for simple matrices
if (buffer) {
memcpy(buffer, fMat, 9 * sizeof(SkScalar));
return 9 * sizeof(SkScalar);
}
-uint32_t SkMatrix::unflatten(const void* buffer) {
+uint32_t SkMatrix::readFromMemory(const void* buffer) {
if (buffer) {
memcpy(fMat, buffer, 9 * sizeof(SkScalar));
this->setTypeMask(kUnknown_Mask);
#include "SkPath.h"
-#include "SkReader32.h"
-#include "SkWriter32.h"
+#include "SkBuffer.h"
#include "SkMath.h"
// This value is just made-up for now. When count is 4, calling memset was much
///////////////////////////////////////////////////////////////////////////////
/*
- Format in flattened buffer: [ptCount, verbCount, pts[], verbs[]]
+ Format in compressed buffer: [ptCount, verbCount, pts[], verbs[]]
*/
-void SkPath::flatten(SkWriter32& buffer) const {
+uint32_t SkPath::writeToMemory(void* storage) const {
SkDEBUGCODE(this->validate();)
+ if (NULL == storage) {
+ const int byteCount = 3 * sizeof(int32_t)
+ + sizeof(SkPoint) * fPts.count()
+ + sizeof(uint8_t) * fVerbs.count();
+ return SkAlign4(byteCount);
+ }
+
+ SkWBuffer buffer(storage);
buffer.write32(fPts.count());
buffer.write32(fVerbs.count());
buffer.write32((fFillType << 8) | fSegmentMask);
- buffer.writeMul4(fPts.begin(), sizeof(SkPoint) * fPts.count());
- buffer.writePad(fVerbs.begin(), fVerbs.count());
+ buffer.write(fPts.begin(), sizeof(SkPoint) * fPts.count());
+ buffer.write(fVerbs.begin(), fVerbs.count());
+ buffer.padToAlign4();
+ return buffer.pos();
}
-void SkPath::unflatten(SkReader32& buffer) {
+uint32_t SkPath::readFromMemory(const void* storage) {
+ SkRBuffer buffer(storage);
fPts.setCount(buffer.readS32());
fVerbs.setCount(buffer.readS32());
uint32_t packed = buffer.readS32();
fSegmentMask = packed & 0xFF;
buffer.read(fPts.begin(), sizeof(SkPoint) * fPts.count());
buffer.read(fVerbs.begin(), fVerbs.count());
+ buffer.skipToAlign4();
GEN_ID_INC;
DIRTY_AFTER_EDIT;
SkDEBUGCODE(this->validate();)
+ return buffer.pos();
}
///////////////////////////////////////////////////////////////////////////////
#include "SkBuffer.h"
-uint32_t SkRegion::flatten(void* storage) const {
+uint32_t SkRegion::writeToMemory(void* storage) const {
if (NULL == storage) {
uint32_t size = sizeof(int32_t); // -1 (empty), 0 (rect), runCount
if (!this->isEmpty()) {
return buffer.pos();
}
-uint32_t SkRegion::unflatten(const void* storage) {
+uint32_t SkRegion::readFromMemory(const void* storage) {
SkRBuffer buffer(storage);
SkRegion tmp;
int32_t count;
static void clipPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32,
SkGPipeState* state) {
SkPath path;
- path.unflatten(*reader);
+ reader->readPath(&path);
canvas->clipPath(path, (SkRegion::Op)DrawOp_unpackData(op32),
reader->readBool());
}
static void drawPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32,
SkGPipeState* state) {
SkPath path;
- path.unflatten(*reader);
+ reader->readPath(&path);
canvas->drawPath(path, state->paint());
}
const void* text = reader->skip(SkAlign4(len));
SkPath path;
- path.unflatten(*reader);
+ reader->readPath(&path);
SkMatrix matrixStorage;
const SkMatrix* matrix = NULL;
return NULL;
}
-static size_t estimateFlattenSize(const SkPath& path) {
- int n = path.countPoints();
- size_t bytes = 3 * sizeof(int32_t);
- bytes += n * sizeof(SkPoint);
- bytes += SkAlign4(n + 2); // verbs: add 2 for move/close extras
-
-#ifdef SK_DEBUG
- {
- SkWriter32 writer(1024);
- path.flatten(writer);
- SkASSERT(writer.size() <= bytes);
- }
-#endif
- return bytes;
-}
-
static size_t writeTypeface(SkWriter32* writer, SkTypeface* typeface) {
SkASSERT(typeface);
SkDynamicMemoryWStream stream;
bool SkGPipeCanvas::concat(const SkMatrix& matrix) {
if (!matrix.isIdentity()) {
NOTIFY_SETUP(this);
- if (this->needOpBytes(matrix.flatten(NULL))) {
+ if (this->needOpBytes(matrix.writeToMemory(NULL))) {
this->writeOp(kConcat_DrawOp);
fWriter.writeMatrix(matrix);
}
void SkGPipeCanvas::setMatrix(const SkMatrix& matrix) {
NOTIFY_SETUP(this);
- if (this->needOpBytes(matrix.flatten(NULL))) {
+ if (this->needOpBytes(matrix.writeToMemory(NULL))) {
this->writeOp(kSetMatrix_DrawOp);
fWriter.writeMatrix(matrix);
}
bool SkGPipeCanvas::clipPath(const SkPath& path, SkRegion::Op rgnOp,
bool doAntiAlias) {
NOTIFY_SETUP(this);
- if (this->needOpBytes(estimateFlattenSize(path)) + sizeof(bool)) {
+ if (this->needOpBytes(path.writeToMemory(NULL)) + sizeof(bool)) {
this->writeOp(kClipPath_DrawOp, 0, rgnOp);
- path.flatten(fWriter);
+ fWriter.writePath(path);
fWriter.writeBool(doAntiAlias);
}
// we just pass on the bounds of the path
bool SkGPipeCanvas::clipRegion(const SkRegion& region, SkRegion::Op rgnOp) {
NOTIFY_SETUP(this);
- if (this->needOpBytes(region.flatten(NULL))) {
+ if (this->needOpBytes(region.writeToMemory(NULL))) {
this->writeOp(kClipRegion_DrawOp, 0, rgnOp);
fWriter.writeRegion(region);
}
void SkGPipeCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
NOTIFY_SETUP(this);
this->writePaint(paint);
- if (this->needOpBytes(estimateFlattenSize(path))) {
+ if (this->needOpBytes(path.writeToMemory(NULL))) {
this->writeOp(kDrawPath_DrawOp);
- path.flatten(fWriter);
+ fWriter.writePath(path);
}
}
if (byteLength) {
NOTIFY_SETUP(this);
unsigned flags = 0;
- size_t size = 4 + SkAlign4(byteLength) + estimateFlattenSize(path);
+ size_t size = 4 + SkAlign4(byteLength) + path.writeToMemory(NULL);
if (matrix) {
flags |= kDrawTextOnPath_HasMatrix_DrawOpFlag;
- size += matrix->flatten(NULL);
+ size += matrix->writeToMemory(NULL);
}
this->writePaint(paint);
if (this->needOpBytes(size)) {
fWriter.write32(byteLength);
fWriter.writePad(text, byteLength);
- path.flatten(fWriter);
+ fWriter.writePath(path);
if (matrix) {
fWriter.writeMatrix(*matrix);
}
static void test_flatten(skiatest::Reporter* reporter, const SkMatrix& m) {
// add 100 in case we have a bug, I don't want to kill my stack in the test
char buffer[SkMatrix::kMaxFlattenSize + 100];
- uint32_t size1 = m.flatten(NULL);
- uint32_t size2 = m.flatten(buffer);
+ uint32_t size1 = m.writeToMemory(NULL);
+ uint32_t size2 = m.writeToMemory(buffer);
REPORTER_ASSERT(reporter, size1 == size2);
REPORTER_ASSERT(reporter, size1 <= SkMatrix::kMaxFlattenSize);
SkMatrix m2;
- uint32_t size3 = m2.unflatten(buffer);
- REPORTER_ASSERT(reporter, size1 == size2);
+ uint32_t size3 = m2.readFromMemory(buffer);
+ REPORTER_ASSERT(reporter, size1 == size3);
REPORTER_ASSERT(reporter, are_equal(reporter, m, m2));
char buffer2[SkMatrix::kMaxFlattenSize + 100];
- size3 = m2.flatten(buffer2);
- REPORTER_ASSERT(reporter, size1 == size2);
+ size3 = m2.writeToMemory(buffer2);
+ REPORTER_ASSERT(reporter, size1 == size3);
REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0);
}
p.cubicTo(pts[4], pts[5], pts[6]);
SkWriter32 writer(100);
- p.flatten(writer);
+ writer.writePath(p);
size_t size = writer.size();
SkAutoMalloc storage(size);
writer.flatten(storage.get());
SkPath p1;
REPORTER_ASSERT(reporter, p1 != p);
- p1.unflatten(reader);
+ reader.readPath(&p1);
REPORTER_ASSERT(reporter, p1 == p);
+
+ // create a buffer that should be much larger than the path so we don't
+ // kill our stack if writer goes too far.
+ char buffer[1024];
+ uint32_t size1 = p.writeToMemory(NULL);
+ uint32_t size2 = p.writeToMemory(buffer);
+ REPORTER_ASSERT(reporter, size1 == size2);
+
+ SkPath p2;
+ uint32_t size3 = p2.readFromMemory(buffer);
+ REPORTER_ASSERT(reporter, size1 == size3);
+ REPORTER_ASSERT(reporter, p == p2);
+
+ char buffer2[1024];
+ size3 = p2.writeToMemory(buffer2);
+ REPORTER_ASSERT(reporter, size1 == size3);
+ REPORTER_ASSERT(reporter, memcmp(buffer, buffer2, size1) == 0);
}
static void test_transform(skiatest::Reporter* reporter) {
projects / platform / upstream / libSkiaSharp.git / commitdiff