bff83f61fa
Author: djsollen@google.com Reviewed By: bsalomon@google.com,borenet@google.com,reed@google.com Review URL: https://chromiumcodereview.appspot.com/12668007 git-svn-id: http://skia.googlecode.com/svn/trunk@8158 2bbb7eff-a529-9590-31e7-b0007b416f81
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* Copyright 2011 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkBitmapRegionDecoder_DEFINED
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#define SkBitmapRegionDecoder_DEFINED
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#include "SkBitmap.h"
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#include "SkImageDecoder.h"
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#include "SkStream.h"
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struct SkIRect;
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/**
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* SkBitmapRegionDecoder can be used to decode a specified rect from an image.
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* This is particularly useful when the original image is large and you only
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* need parts of the image.
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*
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* However, not all image codecs on all platforms support this feature so be
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* prepared to fallback to standard decoding if decodeRegion(...) returns false.
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*/
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class SkBitmapRegionDecoder {
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public:
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SkBitmapRegionDecoder(SkImageDecoder* decoder, SkStream* stream,
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int width, int height) {
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fDecoder = decoder;
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fStream = stream;
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fWidth = width;
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fHeight = height;
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}
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~SkBitmapRegionDecoder() {
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SkDELETE(fDecoder);
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SkSafeUnref(fStream);
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}
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bool decodeRegion(SkBitmap* bitmap, const SkIRect& rect,
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SkBitmap::Config pref, int sampleSize);
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SkImageDecoder* getDecoder() const { return fDecoder; }
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int getWidth() const { return fWidth; }
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int getHeight() const { return fHeight; }
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private:
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SkImageDecoder* fDecoder;
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SkStream* fStream;
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int fWidth;
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int fHeight;
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};
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#endif
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