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1 /* | |
2 * Copyright 2013 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 #ifndef SkCLImageDiffer_DEFINED | |
9 #define SkCLImageDiffer_DEFINED | |
10 | |
11 #if defined(SK_BUILD_FOR_MAC) | |
12 # include <OpenCL/cl.h> | |
13 #else | |
14 # include <CL/cl.h> | |
15 #endif | |
16 #include "SkTDArray.h" | |
17 | |
18 #include "SkImageDiffer.h" | |
19 | |
20 class SkStream; | |
21 | |
22 /** | |
23 * An SkImageDiffer that requires initialization with an OpenCL device and conte
xt. | |
24 */ | |
25 class SkCLImageDiffer : public SkImageDiffer { | |
26 public: | |
27 SkCLImageDiffer(); | |
28 | |
29 bool requiresOpenCL() const override { return true; } | |
30 | |
31 /** | |
32 * Initializes the OpenCL resources this differ needs to work | |
33 * @param device An OpenCL device | |
34 * @param context An OpenCL context of the given device | |
35 * @return True on success, false otherwise | |
36 */ | |
37 virtual bool init(cl_device_id device, cl_context context); | |
38 | |
39 protected: | |
40 /** | |
41 * Called by init after fDevice, fContext, and fCommandQueue are successfull
y initialized | |
42 * @return True on success, false otherwise | |
43 */ | |
44 virtual bool onInit() = 0; | |
45 | |
46 /** | |
47 * Loads an OpenCL kernel from the file with the given named entry point. Th
is only works after | |
48 * init is called. | |
49 * @param file The file path of the kernel | |
50 * @param name The name of the entry point of the desired kernel in the f
ile | |
51 * @param kernel A pointer to return the loaded kernel into | |
52 * @return True on success, false otherwise | |
53 */ | |
54 bool loadKernelFile(const char file[], const char name[], cl_kernel* kernel)
; | |
55 | |
56 /** | |
57 * Loads an OpenCL kernel from the stream with the given named entry point.
This only works | |
58 * after init is called. | |
59 * @param stream The stream that contains the kernel | |
60 * @param name The name of the entry point of the desired kernel in the
stream | |
61 * @param kernel A pointer to return the loaded kernel into | |
62 * @return True on success, false otherwise | |
63 */ | |
64 bool loadKernelStream(SkStream* stream, const char name[], cl_kernel* kernel
); | |
65 | |
66 /** | |
67 * Loads an OpenCL kernel from the source string with the given named entry
point. This only | |
68 * works after init is called. | |
69 * @param source The string that contains the kernel | |
70 * @param name The name of the entry point of the desired kernel in the
source string | |
71 * @param kernel A pointer to return the loaded kernel into | |
72 * @return True on success, false otherwise | |
73 */ | |
74 bool loadKernelSource(const char source[], const char name[], cl_kernel* ker
nel); | |
75 | |
76 /** | |
77 * Loads a read only copy of the given bitmap into device memory and returns
the block of | |
78 * memory. This only works after init is called. | |
79 * @param bitmap The bitmap to load into memory | |
80 * @param image A pointer to return the allocated image to | |
81 * @return True on success, false otherwise | |
82 */ | |
83 bool makeImage2D(SkBitmap* bitmap, cl_mem* image) const; | |
84 | |
85 cl_device_id fDevice; | |
86 cl_context fContext; | |
87 cl_command_queue fCommandQueue; | |
88 | |
89 protected: | |
90 bool fIsGood; | |
91 | |
92 private: | |
93 | |
94 typedef SkImageDiffer INHERITED; | |
95 }; | |
96 | |
97 #endif | |
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