Remove SkImageRef and related functionality.

include/images/SkImageRef.h

-
-/*
- * Copyright 2008 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#ifndef SkImageRef_DEFINED
-#define SkImageRef_DEFINED
-
-#include "SkPixelRef.h"
-#include "SkBitmap.h"
-#include "SkImageDecoder.h"
-#include "SkString.h"
-
-class SkImageRefPool;
-class SkStreamRewindable;
-
-// define this to enable dumping whenever we add/remove/purge an imageref
-//#define DUMP_IMAGEREF_LIFECYCLE
-
-class SkImageRef : public SkPixelRef {
-public:
-    /** Create a new imageref from a stream. NOTE: the stream is not copied, but
-        since it may be accessed from another thread, the caller must ensure
-        that this imageref is the only owner of the stream. i.e. - sole
-        ownership of the stream object is transferred to this imageref object.
-
-        @param stream The stream containing the encoded image data. This may be
-                      retained (by calling ref()), so the caller should not
-                      explicitly delete it.
-        @param config The preferred config of the decoded bitmap.
-        @param sampleSize Requested sampleSize for decoding. Defaults to 1.
-    */
-    SkImageRef(const SkImageInfo&, SkStreamRewindable*, int sampleSize = 1,
-               SkBaseMutex* mutex = NULL);
-    virtual ~SkImageRef();
-
-    /** this value is passed onto the decoder. Default is true
-     */
-    void setDitherImage(bool dither) { fDoDither = dither; }
-
-    /** Return true if the image can be decoded. If so, and bitmap is non-null,
-        call its setConfig() with the corresponding values, but explicitly will
-        not set its pixels or colortable. Use SkPixelRef::lockPixels() for that.
-
-        If there has been an error decoding the bitmap, this will return false
-        and ignore the bitmap parameter.
-    */
-    bool getInfo(SkBitmap* bm);
-
-    /** Return true if the image can be decoded and is opaque. Calling this
-        method will decode and set the pixels in the specified bitmap and
-        sets the isOpaque flag.
-     */
-    bool isOpaque(SkBitmap* bm);
-
-    SkImageDecoderFactory* getDecoderFactory() const { return fFactory; }
-    // returns the factory parameter
-    SkImageDecoderFactory* setDecoderFactory(SkImageDecoderFactory*);
-
-protected:
-    /** Override if you want to install a custom allocator.
-        When this is called we will have already acquired the mutex!
-    */
-    virtual bool onDecode(SkImageDecoder* codec, SkStreamRewindable*, SkBitmap*,
-                          SkBitmap::Config, SkImageDecoder::Mode);
-
-    /*  Overrides from SkPixelRef
-        When these are called, we will have already acquired the mutex!
-     */
-
-    virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
-    // override this in your subclass to clean up when we're unlocking pixels
-    virtual void onUnlockPixels() SK_OVERRIDE {}
-
-    SkImageRef(SkFlattenableReadBuffer&, SkBaseMutex* mutex = NULL);
-    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
-
-    SkBitmap fBitmap;
-
-private:
-    SkStreamRewindable* setStream(SkStreamRewindable*);
-    // called with mutex already held. returns true if the bitmap is in the
-    // requested state (or further, i.e. has pixels)
-    bool prepareBitmap(SkImageDecoder::Mode);
-
-    SkImageDecoderFactory*  fFactory;    // may be null
-    SkStreamRewindable*     fStream;
-    int                     fSampleSize;
-    bool                    fDoDither;
-    bool                    fErrorInDecoding;
-
-    friend class SkImageRefPool;
-
-    SkImageRef*  fPrev, *fNext;
-    size_t ramUsed() const;
-
-    typedef SkPixelRef INHERITED;
-};
-
-#endif