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Side by Side Diff: tools/SkBitmapRegionDecoder.h

Issue 1415243007: Rename SkBitmapRegionDecoder and Create function (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 5 years, 1 month ago
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1 /* 1 /*
2 * Copyright 2015 Google Inc. 2 * Copyright 2015 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #ifndef SkBitmapRegionDecoder_DEFINED 8 #ifndef SkBitmapRegionDecoder_DEFINED
9 #define SkBitmapRegionDecoder_DEFINED 9 #define SkBitmapRegionDecoder_DEFINED
10 10
11 #include "SkBitmap.h" 11 #include "SkBitmap.h"
12 #include "SkEncodedFormat.h" 12 #include "SkEncodedFormat.h"
13 #include "SkStream.h" 13 #include "SkStream.h"
14 14
15 /* 15 /*
16 * This class aims to provide an interface to test multiple implementations of 16 * This class aims to provide an interface to test multiple implementations of
17 * SkBitmapRegionDecoder. 17 * SkBitmapRegionDecoder.
18 */ 18 */
19 class SkBitmapRegionDecoderInterface { 19 class SkBitmapRegionDecoder {
20 public: 20 public:
21 21
22 enum Strategy { 22 enum Strategy {
23 kCanvas_Strategy, // Draw to the canvas, uses SkCodec 23 kCanvas_Strategy, // Draw to the canvas, uses SkCodec
24 kOriginal_Strategy, // Sampling, uses SkImageDecoder 24 kOriginal_Strategy, // Sampling, uses SkImageDecoder
25 kAndroidCodec_Strategy, // Uses SkAndroidCodec for scaling and subsettin g 25 kAndroidCodec_Strategy, // Uses SkAndroidCodec for scaling and subsettin g
26 }; 26 };
27 27
28 /* 28 /*
29 * @param data Refs the data while this object exists, unrefs on destruc tion 29 * @param data Refs the data while this object exists, unrefs on destruc tion
30 * @param strategy Strategy used for scaling and subsetting 30 * @param strategy Strategy used for scaling and subsetting
31 * @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure 31 * @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure
32 */ 32 */
33 static SkBitmapRegionDecoderInterface* CreateBitmapRegionDecoder( 33 static SkBitmapRegionDecoder* Create(
34 SkData* data, Strategy strategy); 34 SkData* data, Strategy strategy);
35 35
36 /* 36 /*
37 * @param stream Takes ownership of the stream 37 * @param stream Takes ownership of the stream
38 * @param strategy Strategy used for scaling and subsetting 38 * @param strategy Strategy used for scaling and subsetting
39 * @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure 39 * @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure
40 */ 40 */
41 static SkBitmapRegionDecoderInterface* CreateBitmapRegionDecoder( 41 static SkBitmapRegionDecoder* Create(
42 SkStreamRewindable* stream, Strategy strategy); 42 SkStreamRewindable* stream, Strategy strategy);
43 43
44 /* 44 /*
45 * Decode a scaled region of the encoded image stream 45 * Decode a scaled region of the encoded image stream
46 * 46 *
47 * @param bitmap Container for decoded pixels. It is assumed that the pixels 47 * @param bitmap Container for decoded pixels. It is assumed that the pixels
48 * are initially unallocated and will be allocated by this function. 48 * are initially unallocated and will be allocated by this function.
49 * @param allocator Allocator for the pixels. If this is NULL, the de fault 49 * @param allocator Allocator for the pixels. If this is NULL, the de fault
50 * allocator (HeapAllocator) will be used. 50 * allocator (HeapAllocator) will be used.
51 * @param desiredSubset Subset of the original image to decode. 51 * @param desiredSubset Subset of the original image to decode.
(...skipping 14 matching lines...) Expand all
66 * @param Requested destination color type 66 * @param Requested destination color type
67 * @return true if we support the requested color type and false otherwise 67 * @return true if we support the requested color type and false otherwise
68 */ 68 */
69 virtual bool conversionSupported(SkColorType colorType) = 0; 69 virtual bool conversionSupported(SkColorType colorType) = 0;
70 70
71 virtual SkEncodedFormat getEncodedFormat() = 0; 71 virtual SkEncodedFormat getEncodedFormat() = 0;
72 72
73 int width() const { return fWidth; } 73 int width() const { return fWidth; }
74 int height() const { return fHeight; } 74 int height() const { return fHeight; }
75 75
76 virtual ~SkBitmapRegionDecoderInterface() {} 76 virtual ~SkBitmapRegionDecoder() {}
77 77
78 protected: 78 protected:
79 79
80 SkBitmapRegionDecoderInterface(int width, int height) 80 SkBitmapRegionDecoder(int width, int height)
81 : fWidth(width) 81 : fWidth(width)
82 , fHeight(height) 82 , fHeight(height)
83 {} 83 {}
84 84
85 private: 85 private:
86 const int fWidth; 86 const int fWidth;
87 const int fHeight; 87 const int fHeight;
88 }; 88 };
89 89
90 #endif 90 #endif
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