friend class SkSurface_Raster;
+ void init(SkBitmap::Config config, int width, int height, bool isOpaque);
+
// used to change the backend's pixels (and possibly config/rowbytes)
// but cannot change the width/height, so there should be no change to
// any clip information.
/**
* Return a new SkMallocPixelRef, automatically allocating storage for the
- * pixels.
- *
- * If rowBytes is 0, an optimal value will be chosen automatically.
- * If rowBytes is > 0, then it will be used, unless it is invald for the
- * specified info, in which case NULL will be returned (failure).
+ * pixels. If rowBytes are 0, an optimal value will be chosen automatically.
+ * If rowBytes is > 0, then it will be respected, or NULL will be returned
+ * if rowBytes is invalid for the specified info.
*
* This pixelref will ref() the specified colortable (if not NULL).
*
SkMallocPixelRef(SkFlattenableReadBuffer& buffer);
virtual ~SkMallocPixelRef();
- virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE;
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
#include "SkRefCnt.h"
#include "SkString.h"
#include "SkFlattenable.h"
+#include "SkImageInfo.h"
#include "SkTDArray.h"
+//#define SK_SUPPORT_LEGACY_ONLOCKPIXELS
+
#ifdef SK_DEBUG
/**
* Defining SK_IGNORE_PIXELREF_SETPRELOCKED will force all pixelref
/** Return the pixel memory returned from lockPixels, or null if the
lockCount is 0.
*/
- void* pixels() const { return fPixels; }
+ void* pixels() const { return fRec.fPixels; }
/** Return the current colorTable (if any) if pixels are locked, or null.
*/
- SkColorTable* colorTable() const { return fColorTable; }
+ SkColorTable* colorTable() const { return fRec.fColorTable; }
/**
+ * To access the actual pixels of a pixelref, it must be "locked".
+ * Calling lockPixels returns a LockRec struct (on success).
+ */
+ struct LockRec {
+ void* fPixels;
+ SkColorTable* fColorTable;
+ size_t fRowBytes;
+
+ void zero() { sk_bzero(this, sizeof(*this)); }
+
+ bool isZero() const {
+ return NULL == fPixels && NULL == fColorTable && 0 == fRowBytes;
+ }
+ };
+
+ /**
* Returns true if the lockcount > 0
*/
bool isLocked() const { return fLockCount > 0; }
SkDEBUGCODE(int getLockCount() const { return fLockCount; })
- /** Call to access the pixel memory, which is returned. Balance with a call
- to unlockPixels().
- */
- void lockPixels();
+ /**
+ * Call to access the pixel memory. Return true on success. Balance this
+ * with a call to unlockPixels().
+ */
+ bool lockPixels();
+
+ /**
+ * Call to access the pixel memory. On success, return true and fill out
+ * the specified rec. On failure, return false and ignore the rec parameter.
+ * Balance this with a call to unlockPixels().
+ */
+ bool lockPixels(LockRec* rec);
+
/** Call to balanace a previous call to lockPixels(). Returns the pixels
(or null) after the unlock. NOTE: lock calls can be nested, but the
matching number of unlock calls must be made in order to free the
void addGenIDChangeListener(GenIDChangeListener* listener);
protected:
- /** Called when the lockCount goes from 0 to 1. The caller will have already
- acquire a mutex for thread safety, so this method need not do that.
- */
- virtual void* onLockPixels(SkColorTable**) = 0;
+#ifdef SK_SUPPORT_LEGACY_ONLOCKPIXELS
+ virtual void* onLockPixels(SkColorTable**);
+ virtual bool onNewLockPixels(LockRec*);
+#else
+ /**
+ * On success, returns true and fills out the LockRec for the pixels. On
+ * failure returns false and ignores the LockRec parameter.
+ *
+ * The caller will have already acquired a mutex for thread safety, so this
+ * method need not do that.
+ */
+ virtual bool onNewLockPixels(LockRec*) = 0;
+#endif
/**
- * Called when the lock count goes from 1 to 0. The caller will have
- * already acquire a mutex for thread safety, so this method need not do
- * that.
+ * Balancing the previous successful call to onNewLockPixels. The locked
+ * pixel address will no longer be referenced, so the subclass is free to
+ * move or discard that memory.
*
- * If the previous call to onLockPixels failed (i.e. returned NULL), then
- * the onUnlockPixels will NOT be called.
+ * The caller will have already acquired a mutex for thread safety, so this
+ * method need not do that.
*/
virtual void onUnlockPixels() = 0;
// only call from constructor. Flags this to always be locked, removing
// the need to grab the mutex and call onLockPixels/onUnlockPixels.
// Performance tweak to avoid those calls (esp. in multi-thread use case).
- void setPreLocked(void* pixels, SkColorTable* ctable);
+ void setPreLocked(void*, size_t rowBytes, SkColorTable*);
private:
SkBaseMutex* fMutex; // must remain in scope for the life of this object
const SkImageInfo fInfo;
- void* fPixels;
- SkColorTable* fColorTable; // we do not track ownership, subclass does
+ // LockRec is only valid if we're in a locked state (isLocked())
+ LockRec fRec;
int fLockCount;
mutable uint32_t fGenerationID;
virtual ~SkROLockPixelsPixelRef();
protected:
- // override from SkPixelRef
- virtual void* onLockPixels(SkColorTable** ptr);
- virtual void onUnlockPixels();
- virtual bool onLockPixelsAreWritable() const; // return false;
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
+ virtual void onUnlockPixels() SK_OVERRIDE;
+ virtual bool onLockPixelsAreWritable() const SK_OVERRIDE; // return false;
private:
SkBitmap fBitmap;
When these are called, we will have already acquired the mutex!
*/
- virtual void* onLockPixels(SkColorTable**);
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
// override this in your subclass to clean up when we're unlocking pixels
- virtual void onUnlockPixels() {}
+ virtual void onUnlockPixels() SK_OVERRIDE {}
SkImageRef(SkFlattenableReadBuffer&, SkBaseMutex* mutex = NULL);
virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
, fBitmap(bitmap) {
}
-SkBitmapDevice::SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque) {
+void SkBitmapDevice::init(SkBitmap::Config config, int width, int height, bool isOpaque) {
fBitmap.setConfig(config, width, height, 0, isOpaque ?
kOpaque_SkAlphaType : kPremul_SkAlphaType);
- if (!fBitmap.allocPixels()) {
- fBitmap.setConfig(config, 0, 0, 0, isOpaque ?
- kOpaque_SkAlphaType : kPremul_SkAlphaType);
- }
- if (!isOpaque) {
- fBitmap.eraseColor(SK_ColorTRANSPARENT);
+
+ if (SkBitmap::kNo_Config != config) {
+ if (!fBitmap.allocPixels()) {
+ // indicate failure by zeroing our bitmap
+ fBitmap.setConfig(config, 0, 0, 0, isOpaque ?
+ kOpaque_SkAlphaType : kPremul_SkAlphaType);
+ } else if (!isOpaque) {
+ fBitmap.eraseColor(SK_ColorTRANSPARENT);
+ }
}
}
+SkBitmapDevice::SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque) {
+ this->init(config, width, height, isOpaque);
+}
+
SkBitmapDevice::SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
const SkDeviceProperties& deviceProperties)
- : SkBaseDevice(deviceProperties) {
-
- fBitmap.setConfig(config, width, height, 0, isOpaque ?
- kOpaque_SkAlphaType : kPremul_SkAlphaType);
- if (!fBitmap.allocPixels()) {
- fBitmap.setConfig(config, 0, 0, 0, isOpaque ?
- kOpaque_SkAlphaType : kPremul_SkAlphaType);
- }
- if (!isOpaque) {
- fBitmap.eraseColor(SK_ColorTRANSPARENT);
- }
+ : SkBaseDevice(deviceProperties)
+{
+ this->init(config, width, height, isOpaque);
}
SkBitmapDevice::~SkBitmapDevice() {
fRB = rowBytes;
SkSafeRef(ctable);
- this->setPreLocked(fStorage, fCTable);
+ this->setPreLocked(fStorage, fRB, fCTable);
}
SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage,
fCTable = ctable;
fRB = rowBytes;
SkSafeRef(ctable);
-
- this->setPreLocked(fStorage, fCTable);
+
+ this->setPreLocked(fStorage, fRB, fCTable);
}
}
}
-void* SkMallocPixelRef::onLockPixels(SkColorTable** ctable) {
- *ctable = fCTable;
- return fStorage;
+bool SkMallocPixelRef::onNewLockPixels(LockRec* rec) {
+ rec->fPixels = fStorage;
+ rec->fRowBytes = fRB;
+ rec->fColorTable = fCTable;
+ return true;
}
void SkMallocPixelRef::onUnlockPixels() {
fCTable = NULL;
}
- this->setPreLocked(fStorage, fCTable);
+ this->setPreLocked(fStorage, fRB, fCTable);
}
// just need a > 0 value, so pick a funny one to aid in debugging
#define SKPIXELREF_PRELOCKED_LOCKCOUNT 123456789
-SkPixelRef::SkPixelRef(const SkImageInfo& info, SkBaseMutex* mutex) : fInfo(info) {
- this->setMutex(mutex);
- fPixels = NULL;
- fColorTable = NULL; // we do not track ownership of this
+SkPixelRef::SkPixelRef(const SkImageInfo& info) : fInfo(info) {
+ this->setMutex(NULL);
+ fRec.zero();
fLockCount = 0;
this->needsNewGenID();
fIsImmutable = false;
fPreLocked = false;
}
-SkPixelRef::SkPixelRef(const SkImageInfo& info) : fInfo(info) {
- this->setMutex(NULL);
- fPixels = NULL;
- fColorTable = NULL; // we do not track ownership of this
+
+SkPixelRef::SkPixelRef(const SkImageInfo& info, SkBaseMutex* mutex) : fInfo(info) {
+ this->setMutex(mutex);
+ fRec.zero();
fLockCount = 0;
this->needsNewGenID();
fIsImmutable = false;
, fInfo(read_info(buffer))
{
this->setMutex(mutex);
- fPixels = NULL;
- fColorTable = NULL; // we do not track ownership of this
+ fRec.zero();
fLockCount = 0;
fIsImmutable = buffer.readBool();
fGenerationID = buffer.readUInt();
that.fUniqueGenerationID = false;
}
-void SkPixelRef::setPreLocked(void* pixels, SkColorTable* ctable) {
+void SkPixelRef::setPreLocked(void* pixels, size_t rowBytes, SkColorTable* ctable) {
#ifndef SK_IGNORE_PIXELREF_SETPRELOCKED
// only call me in your constructor, otherwise fLockCount tracking can get
// out of sync.
- fPixels = pixels;
- fColorTable = ctable;
+ fRec.fPixels = pixels;
+ fRec.fColorTable = ctable;
+ fRec.fRowBytes = rowBytes;
fLockCount = SKPIXELREF_PRELOCKED_LOCKCOUNT;
fPreLocked = true;
#endif
}
}
-void SkPixelRef::lockPixels() {
+bool SkPixelRef::lockPixels(LockRec* rec) {
SkASSERT(!fPreLocked || SKPIXELREF_PRELOCKED_LOCKCOUNT == fLockCount);
-
+
if (!fPreLocked) {
SkAutoMutexAcquire ac(*fMutex);
-
+
if (1 == ++fLockCount) {
- fPixels = this->onLockPixels(&fColorTable);
- // If onLockPixels failed, it will return NULL
- if (NULL == fPixels) {
- fColorTable = NULL;
+ SkASSERT(fRec.isZero());
+
+ LockRec rec;
+ if (!this->onNewLockPixels(&rec)) {
+ return false;
}
+ SkASSERT(!rec.isZero()); // else why did onNewLock return true?
+ fRec = rec;
}
}
+ *rec = fRec;
+ return true;
+}
+
+bool SkPixelRef::lockPixels() {
+ LockRec rec;
+ return this->lockPixels(&rec);
}
void SkPixelRef::unlockPixels() {
SkASSERT(fLockCount > 0);
if (0 == --fLockCount) {
// don't call onUnlockPixels unless onLockPixels succeeded
- if (fPixels) {
+ if (fRec.fPixels) {
this->onUnlockPixels();
- fPixels = NULL;
- fColorTable = NULL;
+ fRec.zero();
} else {
- SkASSERT(NULL == fColorTable);
+ SkASSERT(fRec.isZero());
}
}
}
///////////////////////////////////////////////////////////////////////////////
+#ifdef SK_SUPPORT_LEGACY_ONLOCKPIXELS
+
+void* SkPixelRef::onLockPixels(SkColorTable** ctable) {
+ return NULL;
+}
+
+bool SkPixelRef::onNewLockPixels(LockRec* rec) {
+ SkColorTable* ctable;
+ void* pixels = this->onLockPixels(&ctable);
+ if (!pixels) {
+ return false;
+ }
+
+ rec->fPixels = pixels;
+ rec->fColorTable = ctable;
+ rec->fRowBytes = 0; // callers don't currently need this (thank goodness)
+ return true;
+}
+
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+
#ifdef SK_BUILD_FOR_ANDROID
void SkPixelRef::globalRef(void* data) {
this->ref();
SK_DECLARE_UNFLATTENABLE_OBJECT()
protected:
- virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE;
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
private:
- SkImageInfo fInfo; // remove when SkPixelRef gets this in baseclass
-
SkDiscardableMemory* fDM;
size_t fRB;
bool fFirstTime;
, fDM(dm)
, fRB(rowBytes)
{
- fInfo = info; // remove this redundant field when SkPixelRef has info
-
SkASSERT(dm->data());
fFirstTime = true;
}
SkDELETE(fDM);
}
-void* SkOneShotDiscardablePixelRef::onLockPixels(SkColorTable** ctable) {
+bool SkOneShotDiscardablePixelRef::onNewLockPixels(LockRec* rec) {
if (fFirstTime) {
// we're already locked
SkASSERT(fDM->data());
fFirstTime = false;
- return fDM->data();
+ goto SUCCESS;
}
// A previous call to onUnlock may have deleted our DM, so check for that
if (NULL == fDM) {
- return NULL;
+ return false;
}
if (!fDM->lock()) {
// since it failed, we delete it now, to free-up the resource
delete fDM;
fDM = NULL;
- return NULL;
+ return false;
}
- return fDM->data();
+
+SUCCESS:
+ rec->fPixels = fDM->data();
+ rec->fColorTable = NULL;
+ rec->fRowBytes = fRB;
+ return true;
}
void SkOneShotDiscardablePixelRef::onUnlockPixels() {
}
size_t SkOneShotDiscardablePixelRef::getAllocatedSizeInBytes() const {
- return fInfo.fHeight * fRB;
+ return this->info().getSafeSize(fRB);
}
class SkScaledImageCacheDiscardableAllocator : public SkBitmap::Allocator {
SkROLockPixelsPixelRef::~SkROLockPixelsPixelRef() {}
-void* SkROLockPixelsPixelRef::onLockPixels(SkColorTable** ctable) {
- if (ctable) {
- *ctable = NULL;
- }
+bool SkROLockPixelsPixelRef::onNewLockPixels(LockRec* rec) {
fBitmap.reset();
// SkDebugf("---------- calling readpixels in support of lockpixels\n");
if (!this->onReadPixels(&fBitmap, NULL)) {
SkDebugf("SkROLockPixelsPixelRef::onLockPixels failed!\n");
- return NULL;
+ return false;
}
fBitmap.lockPixels();
- return fBitmap.getPixels();
+ if (NULL == fBitmap.getPixels()) {
+ return false;
+ }
+
+ rec->fPixels = fBitmap.getPixels();
+ rec->fColorTable = NULL;
+ rec->fRowBytes = fBitmap.rowBytes();
+ return true;
}
void SkROLockPixelsPixelRef::onUnlockPixels() {
//#define DUMP_IMAGEREF_LIFECYCLE
-
///////////////////////////////////////////////////////////////////////////////
SkImageRef::SkImageRef(const SkImageInfo& info, SkStreamRewindable* stream,
int sampleSize, SkBaseMutex* mutex)
- : SkPixelRef(info, mutex), fErrorInDecoding(false) {
+ : INHERITED(info, mutex), fErrorInDecoding(false)
+{
SkASSERT(stream);
stream->ref();
fStream = stream;
#ifdef DUMP_IMAGEREF_LIFECYCLE
SkDebugf("delete ImageRef %p [%d] data=%d\n",
- this, fConfig, (int)fStream->getLength());
+ this, this->info().fColorType, (int)fStream->getLength());
#endif
fStream->unref();
return false;
}
-void* SkImageRef::onLockPixels(SkColorTable** ct) {
+bool SkImageRef::onNewLockPixels(LockRec* rec) {
if (NULL == fBitmap.getPixels()) {
(void)this->prepareBitmap(SkImageDecoder::kDecodePixels_Mode);
}
- if (ct) {
- *ct = fBitmap.getColorTable();
+ if (NULL == fBitmap.getPixels()) {
+ return false;
}
- return fBitmap.getPixels();
+ rec->fPixels = fBitmap.getPixels();
+ rec->fColorTable = NULL;
+ rec->fRowBytes = fBitmap.rowBytes();
+ return true;
}
size_t SkImageRef::ramUsed() const {
}
}
-void* SkImageRef_ashmem::onLockPixels(SkColorTable** ct) {
+bool SkImageRef_ashmem::onNewLockPixels(LockRec* rec) {
SkASSERT(fBitmap.getPixels() == NULL);
SkASSERT(fBitmap.getColorTable() == NULL);
#endif
} else {
SkDebugf("===== ashmem pin_region(%d) returned %d\n", fRec.fFD, pin);
- // return null result for failure
- if (ct) {
- *ct = NULL;
- }
- return NULL;
+ return false;
}
} else {
// no FD, will create an ashmem region in allocator
}
- return this->INHERITED::onLockPixels(ct);
+ return this->INHERITED::onNewLockPixels(rec);
}
void SkImageRef_ashmem::onUnlockPixels() {
SkBitmap* bitmap, SkBitmap::Config config,
SkImageDecoder::Mode mode);
- virtual void* onLockPixels(SkColorTable**);
- virtual void onUnlockPixels();
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
+ virtual void onUnlockPixels() SK_OVERRIDE;
private:
void closeFD();
#include "SkCachingPixelRef.h"
#include "SkScaledImageCache.h"
-
bool SkCachingPixelRef::Install(SkImageGenerator* generator,
SkBitmap* dst) {
SkImageInfo info;
// Assert always unlock before unref.
}
-void* SkCachingPixelRef::onLockPixels(SkColorTable**) {
- const SkImageInfo& info = this->info();
-
+bool SkCachingPixelRef::onNewLockPixels(LockRec* rec) {
if (fErrorInDecoding) {
- return NULL; // don't try again.
+ return false; // don't try again.
}
+
+ const SkImageInfo& info = this->info();
SkBitmap bitmap;
SkASSERT(NULL == fScaledCacheId);
fScaledCacheId = SkScaledImageCache::FindAndLock(this->getGenerationID(),
// Cache has been purged, must re-decode.
if ((!bitmap.setConfig(info, fRowBytes)) || !bitmap.allocPixels()) {
fErrorInDecoding = true;
- return NULL;
+ return false;
}
SkAutoLockPixels autoLockPixels(bitmap);
if (!fImageGenerator->getPixels(info, bitmap.getPixels(), fRowBytes)) {
fErrorInDecoding = true;
- return NULL;
+ return false;
}
fScaledCacheId = SkScaledImageCache::AddAndLock(this->getGenerationID(),
info.fWidth,
SkAutoLockPixels autoLockPixels(bitmap);
void* pixels = bitmap.getPixels();
SkASSERT(pixels != NULL);
+
// At this point, the autoLockPixels will unlockPixels()
// to remove bitmap's lock on the pixels. We will then
// destroy bitmap. The *only* guarantee that this pointer
// bitmap (SkScaledImageCache::Rec.fBitmap) that holds a
// reference to the concrete PixelRef while this record is
// locked.
- return pixels;
+ rec->fPixels = pixels;
+ rec->fColorTable = NULL;
+ rec->fRowBytes = bitmap.rowBytes();
+ return true;
}
void SkCachingPixelRef::onUnlockPixels() {
protected:
virtual ~SkCachingPixelRef();
- virtual void* onLockPixels(SkColorTable** colorTable) SK_OVERRIDE;
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; }
SkDELETE(fGenerator);
}
-void* SkDiscardablePixelRef::onLockPixels(SkColorTable**) {
+bool SkDiscardablePixelRef::onNewLockPixels(LockRec* rec) {
if (fDiscardableMemory != NULL) {
if (fDiscardableMemory->lock()) {
- return fDiscardableMemory->data();
+ rec->fPixels = fDiscardableMemory->data();
+ rec->fColorTable = NULL;
+ rec->fRowBytes = fRowBytes;
+ return true;
}
SkDELETE(fDiscardableMemory);
fDiscardableMemory = NULL;
}
-
+
const size_t size = this->info().getSafeSize(fRowBytes);
if (fDMFactory != NULL) {
fDiscardableMemory = SkDiscardableMemory::Create(size);
}
if (NULL == fDiscardableMemory) {
- return NULL; // Memory allocation failed.
+ return false; // Memory allocation failed.
}
+
void* pixels = fDiscardableMemory->data();
if (!fGenerator->getPixels(this->info(), pixels, fRowBytes)) {
fDiscardableMemory->unlock();
SkDELETE(fDiscardableMemory);
fDiscardableMemory = NULL;
- return NULL;
+ return false;
}
- return pixels;
+
+ rec->fPixels = pixels;
+ rec->fColorTable = NULL;
+ rec->fRowBytes = fRowBytes;
+ return true;
}
+
void SkDiscardablePixelRef::onUnlockPixels() {
fDiscardableMemory->unlock();
}
protected:
~SkDiscardablePixelRef();
- virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE;
+
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; }
SkDiscardablePixelRef(const SkImageInfo&, SkImageGenerator*,
size_t rowBytes,
SkDiscardableMemory::Factory* factory);
+
friend bool SkInstallDiscardablePixelRef(SkImageGenerator*,
SkBitmap*,
SkDiscardableMemory::Factory*);
+
typedef SkPixelRef INHERITED;
};
+
#endif // SkDiscardablePixelRef_DEFINED
projects / platform / upstream / libSkiaSharp.git / commitdiff