5cb4885b4c
We no longer need to worry about namespace conflicts SkBitmapRegionDecoder in Android (which we are replacing). Additionally, the static Create() function does not need to repeat the name BitmapRegionDecoder. BUG=skia: Review URL: https://codereview.chromium.org/1415243007
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/*
|
|
* Copyright 2015 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkBitmap.h"
|
|
#include "SkBitmapRegionDecoder.h"
|
|
#include "SkCodec.h"
|
|
|
|
/*
|
|
* This class implements SkBitmapRegionDecoder using an SkCodec and
|
|
* an SkCanvas. It uses the scanline decoder to subset the height. It then
|
|
* will subset the width and scale by drawing to an SkCanvas.
|
|
*/
|
|
// FIXME (msarett): This implementation does not support WEBP, because WEBP
|
|
// does not have a scanline decoder.
|
|
class SkBitmapRegionCanvas : public SkBitmapRegionDecoder {
|
|
public:
|
|
|
|
/*
|
|
* Takes ownership of pointer to decoder
|
|
*/
|
|
SkBitmapRegionCanvas(SkCodec* decoder);
|
|
|
|
bool decodeRegion(SkBitmap* bitmap, SkBitmap::Allocator* allocator,
|
|
const SkIRect& desiredSubset, int sampleSize,
|
|
SkColorType colorType, bool requireUnpremul) override;
|
|
|
|
bool conversionSupported(SkColorType colorType) override;
|
|
|
|
SkEncodedFormat getEncodedFormat() override { return fDecoder->getEncodedFormat(); }
|
|
|
|
private:
|
|
|
|
SkAutoTDelete<SkCodec> fDecoder;
|
|
|
|
typedef SkBitmapRegionDecoder INHERITED;
|
|
|
|
};
|