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