remove SkGPipe

include/pipe/SkGPipe.h

-/*
- * 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 SkGPipe_DEFINED
-#define SkGPipe_DEFINED
-
-#include "SkFlattenable.h"
-#include "SkPicture.h"
-#include "SkWriter32.h"
-
-class SkCanvas;
-
-// XLib.h might have defined Status already (ugh)
-#ifdef Status
-    #undef Status
-#endif
-
-class SkGPipeReader {
-public:
-    SkGPipeReader();
-    SkGPipeReader(SkCanvas* target);
-    ~SkGPipeReader();
-
-    enum Status {
-        kDone_Status,   //!< no more data expected from reader
-        kEOF_Status,    //!< need more data from reader
-        kError_Status,  //!< encountered error
-        kReadAtom_Status//!< finished reading an atom
-    };
-
-    enum PlaybackFlags {
-        kReadAtom_PlaybackFlag = 0x1, //!< playback a single command from the stream
-        kSilent_PlaybackFlag   = 0x2, //!< playback without drawing
-    };
-
-    void setCanvas(SkCanvas*);
-
-    /**
-     *  Set a function for decoding bitmaps that have encoded data.
-     */
-    void setBitmapDecoder(SkPicture::InstallPixelRefProc proc) { fProc = proc; }
-
-    // data must be 4-byte aligned
-    // length must be a multiple of 4
-    Status playback(const void* data, size_t length, uint32_t playbackFlags = 0,
-                    size_t* bytesRead = NULL);
-private:
-    SkCanvas*                       fCanvas;
-    class SkGPipeState*             fState;
-    SkPicture::InstallPixelRefProc  fProc;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkGPipeCanvas;
-
-class SkGPipeController {
-public:
-    SkGPipeController() : fCanvas(NULL) {}
-    virtual ~SkGPipeController();
-
-    /**
-     *  Called periodically by the writer, to get a working buffer of RAM to
-     *  write into. The actual size of the block is also returned, and must be
-     *  actual >= minRequest. If NULL is returned, then actual is ignored and
-     *  writing will stop.
-     *
-     *  The returned block must be 4-byte aligned, and actual must be a
-     *  multiple of 4.
-     *  minRequest will always be a multiple of 4.
-     */
-    virtual void* requestBlock(size_t minRequest, size_t* actual) = 0;
-
-    /**
-     *  This is called each time some atomic portion of the data has been
-     *  written to the block (most recently returned by requestBlock()).
-     *  If bytes == 0, then the writer has finished.
-     *
-     *  bytes will always be a multiple of 4.
-     */
-    virtual void notifyWritten(size_t bytes) = 0;
-    virtual int numberOfReaders() const { return 1; }
-
-    /**
-     *  Release resource references that are held in internal caches.
-     *  This must only be called after the pipe has been completely flushed.
-     */
-    void purgeCaches();
-
-private:
-    friend class SkGPipeWriter;
-    void setCanvas(SkGPipeCanvas*);
-
-    SkGPipeCanvas* fCanvas;
-};
-
-class SkGPipeWriter {
-public:
-    SkGPipeWriter();
-    ~SkGPipeWriter();
-
-    bool isRecording() const { return SkToBool(fCanvas); }
-
-    enum Flags {
-        /**
-         *  Tells the writer that the reader will be in a different process, so
-         *  (for example) we cannot put function pointers in the stream.
-         */
-        kCrossProcess_Flag              = 1 << 0,
-
-        /**
-         *  Only meaningful if kCrossProcess_Flag is set. Tells the writer that
-         *  in spite of being cross process, it will have shared address space
-         *  with the reader, so the two can share large objects (like SkBitmaps).
-         */
-        kSharedAddressSpace_Flag        = 1 << 1,
-
-        /**
-         *  Tells the writer that there will be multiple threads reading the stream
-         *  simultaneously.
-         */
-        kSimultaneousReaders_Flag       = 1 << 2,
-    };
-
-    SkCanvas* startRecording(SkGPipeController*, uint32_t flags = 0,
-        uint32_t width = kDefaultRecordingCanvasSize,
-        uint32_t height = kDefaultRecordingCanvasSize);
-
-    // called in destructor, but can be called sooner once you know there
-    // should be no more drawing calls made into the recording canvas.
-    void endRecording();
-
-    /**
-     *  Tells the writer to commit all recorded draw commands to the
-     *  controller immediately.
-     *  @param detachCurrentBlock Set to true to request that the next draw
-     *      command be recorded in a new block.
-     */
-    void flushRecording(bool detachCurrentBlock);
-
-    /**
-     * Return the amount of bytes being used for recording. Note that this
-     * does not include the amount of storage written to the stream, which is
-     * controlled by the SkGPipeController.
-     * Currently only returns the amount used for SkBitmaps, since they are
-     * potentially unbounded (if the client is not calling playback).
-     */
-    size_t storageAllocatedForRecording() const;
-
-    /**
-     * Attempt to reduce the storage allocated for recording by evicting
-     * cache resources.
-     * @param bytesToFree minimum number of bytes that should be attempted to
-     *   be freed.
-     * @return number of bytes actually freed.
-     */
-    size_t freeMemoryIfPossible(size_t bytesToFree);
-
-private:
-    enum {
-        kDefaultRecordingCanvasSize = 32767,
-    };
-
-    SkGPipeCanvas* fCanvas;
-    SkWriter32     fWriter;
-};
-
-#endif