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1 /* | |
2 * Copyright 2015 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #include "SkBitmap.h" | |
9 #include "SkBitmapRegionDecoderInterface.h" | |
10 #include "SkImageDecoder.h" | |
11 #include "SkTemplates.h" | |
12 | |
13 /* | |
14 * This class aims to duplicate the current implementation of | |
15 * SkBitmapRegionDecoder in Android. | |
16 */ | |
17 class SkBitmapRegionSampler : public SkBitmapRegionDecoderInterface { | |
18 public: | |
19 | |
20 /* | |
21 * Takes ownership of pointer to decoder | |
22 */ | |
23 SkBitmapRegionSampler(SkImageDecoder* decoder, int width, int height); | |
24 | |
25 /* | |
26 * Three differences from the Android version: | |
27 * Returns a Skia bitmap instead of an Android bitmap. | |
28 * Android version attempts to reuse a recycled bitmap. | |
29 * Removed the options object and used parameters for color type and | |
30 * sample size. | |
31 */ | |
32 SkBitmap* decodeRegion(int start_x, int start_y, int width, int height, | |
33 int sampleSize, SkColorType prefColorType) override; | |
34 | |
35 private: | |
36 | |
37 SkAutoTDelete<SkImageDecoder> fDecoder; | |
38 | |
39 typedef SkBitmapRegionDecoderInterface INHERITED; | |
40 | |
41 }; | |
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