blob: f41d5b94847fb78a26e97404128d1fc0ab0fff05 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/*
* 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;
};
|
