widget/android/AndroidGraphicBuffer.h@b8a032363ba2 (annotated)
widget/android/AndroidGraphicBuffer.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef AndroidGraphicBuffer_h_ |
| michael@0 | 7 | #define AndroidGraphicBuffer_h_ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "gfxTypes.h" |
| michael@0 | 10 | |
| michael@0 | 11 | typedef void* EGLImageKHR; |
| michael@0 | 12 | typedef void* EGLClientBuffer; |
| michael@0 | 13 | |
| michael@0 | 14 | struct nsIntRect; |
| michael@0 | 15 | |
| michael@0 | 16 | namespace mozilla { |
| michael@0 | 17 | |
| michael@0 | 18 | /** |
| michael@0 | 19 | * This class allows access to Android's direct texturing mechanism. Locking |
| michael@0 | 20 | * the buffer gives you a pointer you can read/write to directly. It is fully |
| michael@0 | 21 | * threadsafe, but you probably really want to use the AndroidDirectTexture |
| michael@0 | 22 | * class which will handle double buffering. |
| michael@0 | 23 | * |
| michael@0 | 24 | * In order to use the buffer in OpenGL, just call Bind() and it will attach |
| michael@0 | 25 | * to whatever texture is bound to GL_TEXTURE_2D. |
| michael@0 | 26 | */ |
| michael@0 | 27 | class AndroidGraphicBuffer |
| michael@0 | 28 | { |
| michael@0 | 29 | public: |
| michael@0 | 30 | enum { |
| michael@0 | 31 | UsageSoftwareRead = 1, |
| michael@0 | 32 | UsageSoftwareWrite = 1 << 1, |
| michael@0 | 33 | UsageTexture = 1 << 2, |
| michael@0 | 34 | UsageTarget = 1 << 3, |
| michael@0 | 35 | Usage2D = 1 << 4 |
| michael@0 | 36 | }; |
| michael@0 | 37 | |
| michael@0 | 38 | AndroidGraphicBuffer(uint32_t width, uint32_t height, uint32_t usage, gfxImageFormat format); |
| michael@0 | 39 | virtual ~AndroidGraphicBuffer(); |
| michael@0 | 40 | |
| michael@0 | 41 | int Lock(uint32_t usage, unsigned char **bits); |
| michael@0 | 42 | int Lock(uint32_t usage, const nsIntRect& rect, unsigned char **bits); |
| michael@0 | 43 | int Unlock(); |
| michael@0 | 44 | bool Reallocate(uint32_t aWidth, uint32_t aHeight, gfxImageFormat aFormat); |
| michael@0 | 45 | |
| michael@0 | 46 | uint32_t Width() { return mWidth; } |
| michael@0 | 47 | uint32_t Height() { return mHeight; } |
| michael@0 | 48 | |
| michael@0 | 49 | bool Bind(); |
| michael@0 | 50 | |
| michael@0 | 51 | static bool IsBlacklisted(); |
| michael@0 | 52 | |
| michael@0 | 53 | private: |
| michael@0 | 54 | uint32_t mWidth; |
| michael@0 | 55 | uint32_t mHeight; |
| michael@0 | 56 | uint32_t mUsage; |
| michael@0 | 57 | gfxImageFormat mFormat; |
| michael@0 | 58 | |
| michael@0 | 59 | bool EnsureInitialized(); |
| michael@0 | 60 | bool EnsureEGLImage(); |
| michael@0 | 61 | |
| michael@0 | 62 | void DestroyBuffer(); |
| michael@0 | 63 | bool EnsureBufferCreated(); |
| michael@0 | 64 | |
| michael@0 | 65 | uint32_t GetAndroidUsage(uint32_t aUsage); |
| michael@0 | 66 | uint32_t GetAndroidFormat(gfxImageFormat aFormat); |
| michael@0 | 67 | |
| michael@0 | 68 | void *mHandle; |
| michael@0 | 69 | void *mEGLImage; |
| michael@0 | 70 | }; |
| michael@0 | 71 | |
| michael@0 | 72 | } /* mozilla */ |
| michael@0 | 73 | #endif /* AndroidGraphicBuffer_h_ */ |
