Remove SkImageRef and related functionality.

src/images/SkImageRef.cpp

-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "SkImageRef.h"
-#include "SkBitmap.h"
-#include "SkReadBuffer.h"
-#include "SkWriteBuffer.h"
-#include "SkImageDecoder.h"
-#include "SkStream.h"
-#include "SkTemplates.h"
-#include "SkThread.h"
-
-//#define DUMP_IMAGEREF_LIFECYCLE
-
-///////////////////////////////////////////////////////////////////////////////
-
-SkImageRef::SkImageRef(const SkImageInfo& info, SkStreamRewindable* stream,
-                       int sampleSize, SkBaseMutex* mutex)
-        : INHERITED(info, mutex), fErrorInDecoding(false)
-{
-    SkASSERT(stream);
-    stream->ref();
-    fStream = stream;
-    fSampleSize = sampleSize;
-    fDoDither = true;
-    fPrev = fNext = NULL;
-    fFactory = NULL;
-
-    // This sets the colortype/alphatype to exactly match our info, so that this
-    // can get communicated down to the codec.
-    fBitmap.setInfo(info);
-
-#ifdef DUMP_IMAGEREF_LIFECYCLE
-    SkDebugf("add ImageRef %p [%d] data=%d\n",
-              this, this->info().fColorType, (int)stream->getLength());
-#endif
-}
-
-SkImageRef::~SkImageRef() {
-
-#ifdef DUMP_IMAGEREF_LIFECYCLE
-    SkDebugf("delete ImageRef %p [%d] data=%d\n",
-              this, this->info().fColorType, (int)fStream->getLength());
-#endif
-
-    fStream->unref();
-    SkSafeUnref(fFactory);
-}
-
-bool SkImageRef::getInfo(SkBitmap* bitmap) {
-    SkAutoMutexAcquire ac(this->mutex());
-
-    if (!this->prepareBitmap(SkImageDecoder::kDecodeBounds_Mode)) {
-        return false;
-    }
-
-    SkASSERT(SkBitmap::kNo_Config != fBitmap.config());
-    if (bitmap) {
-        bitmap->setConfig(fBitmap.config(), fBitmap.width(), fBitmap.height());
-    }
-    return true;
-}
-
-bool SkImageRef::isOpaque(SkBitmap* bitmap) {
-    if (bitmap && bitmap->pixelRef() == this) {
-        bitmap->lockPixels();
-        // what about colortables??????
-        bitmap->setAlphaType(fBitmap.alphaType());
-        bitmap->unlockPixels();
-        return true;
-    }
-    return false;
-}
-
-SkImageDecoderFactory* SkImageRef::setDecoderFactory(
-                                                SkImageDecoderFactory* fact) {
-    SkRefCnt_SafeAssign(fFactory, fact);
-    return fact;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool SkImageRef::onDecode(SkImageDecoder* codec, SkStreamRewindable* stream,
-                          SkBitmap* bitmap, SkBitmap::Config config,
-                          SkImageDecoder::Mode mode) {
-    return codec->decode(stream, bitmap, config, mode);
-}
-
-bool SkImageRef::prepareBitmap(SkImageDecoder::Mode mode) {
-
-    if (fErrorInDecoding) {
-        return false;
-    }
-
-    if (NULL != fBitmap.getPixels() ||
-            (SkBitmap::kNo_Config != fBitmap.config() &&
-             SkImageDecoder::kDecodeBounds_Mode == mode)) {
-        return true;
-    }
-
-    SkASSERT(fBitmap.getPixels() == NULL);
-
-    if (!fStream->rewind()) {
-        SkDEBUGF(("Failed to rewind SkImageRef stream!"));
-        return false;
-    }
-
-    SkImageDecoder* codec;
-    if (fFactory) {
-        codec = fFactory->newDecoder(fStream);
-    } else {
-        codec = SkImageDecoder::Factory(fStream);
-    }
-
-    if (codec) {
-        SkAutoTDelete<SkImageDecoder> ad(codec);
-
-        codec->setSampleSize(fSampleSize);
-        codec->setDitherImage(fDoDither);
-        codec->setRequireUnpremultipliedColors(this->info().fAlphaType == kUnpremul_SkAlphaType);
-        if (this->onDecode(codec, fStream, &fBitmap, fBitmap.config(), mode)) {
-            if (kOpaque_SkAlphaType == fBitmap.alphaType()) {
-                this->changeAlphaType(kOpaque_SkAlphaType);
-            }
-            SkASSERT(this->info() == fBitmap.info());
-            return true;
-        }
-    }
-
-#ifdef DUMP_IMAGEREF_LIFECYCLE
-    if (NULL == codec) {
-        SkDebugf("--- ImageRef: <%s> failed to find codec\n", this->getURI());
-    } else {
-        SkDebugf("--- ImageRef: <%s> failed in codec for %d mode\n",
-                 this->getURI(), mode);
-    }
-#endif
-    fErrorInDecoding = true;
-    fBitmap.reset();
-    return false;
-}
-
-bool SkImageRef::onNewLockPixels(LockRec* rec) {
-    if (NULL == fBitmap.getPixels()) {
-        (void)this->prepareBitmap(SkImageDecoder::kDecodePixels_Mode);
-    }
-
-    if (NULL == fBitmap.getPixels()) {
-        return false;
-    }
-    rec->fPixels = fBitmap.getPixels();
-    rec->fColorTable = NULL;
-    rec->fRowBytes = fBitmap.rowBytes();
-    return true;
-}
-
-size_t SkImageRef::ramUsed() const {
-    size_t size = 0;
-
-    if (fBitmap.getPixels()) {
-        size = fBitmap.getSize();
-        if (fBitmap.getColorTable()) {
-            size += fBitmap.getColorTable()->count() * sizeof(SkPMColor);
-        }
-    }
-    return size;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-SkImageRef::SkImageRef(SkReadBuffer& buffer, SkBaseMutex* mutex)
-        : INHERITED(buffer, mutex), fErrorInDecoding(false) {
-    fSampleSize = buffer.readInt();
-    fDoDither = buffer.readBool();
-
-    size_t length = buffer.getArrayCount();
-    if (buffer.validateAvailable(length)) {
-        fStream = SkNEW_ARGS(SkMemoryStream, (length));
-        buffer.readByteArray((void*)fStream->getMemoryBase(), length);
-    } else {
-        fStream = NULL;
-    }
-
-    fPrev = fNext = NULL;
-    fFactory = NULL;
-
-    // This sets the colortype/alphatype to exactly match our info, so that this
-    // can get communicated down to the codec.
-    fBitmap.setInfo(this->info());
-}
-
-void SkImageRef::flatten(SkWriteBuffer& buffer) const {
-    this->INHERITED::flatten(buffer);
-
-    buffer.writeInt(fSampleSize);
-    buffer.writeBool(fDoDither);
-    // FIXME: Consider moving this logic should go into writeStream itself.
-    // writeStream currently has no other callers, so this may be fine for
-    // now.
-    if (!fStream->rewind()) {
-        SkDEBUGF(("Failed to rewind SkImageRef stream!"));
-        buffer.write32(0);
-    } else {
-        // FIXME: Handle getLength properly here. Perhaps this class should
-        // take an SkStreamAsset.
-        buffer.writeStream(fStream, fStream->getLength());
-    }
-}