| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PPAPI_THUNK_PPB_IMAGE_DATA_API_H_ |
| #define PPAPI_THUNK_PPB_IMAGE_DATA_API_H_ |
| |
| #include "ppapi/c/pp_bool.h" |
| #include "ppapi/c/ppb_image_data.h" |
| |
| class SkCanvas; |
| |
| namespace ppapi { |
| namespace thunk { |
| |
| class PPB_ImageData_API { |
| public: |
| virtual ~PPB_ImageData_API() {} |
| |
| virtual PP_Bool Describe(PP_ImageDataDesc* desc) = 0; |
| virtual void* Map() = 0; |
| virtual void Unmap() = 0; |
| |
| // Trusted inteface. |
| virtual int32_t GetSharedMemory(int* handle, uint32_t* byte_count) = 0; |
| |
| // Get the platform-specific canvas that backs this ImageData, if there is |
| // one. |
| // The canvas will be NULL: |
| // * If the image is not mapped. |
| // * Within untrusted code (which does not have skia). |
| // * If the ImageData is not backed by a platform-specific image buffer. |
| // This will be the case for ImageDatas created for use in NaCl. |
| // For this last reason, you should prefer GetCanvas any time you don't need |
| // a platform-specific canvas (e.g., for use with platform-specific APIs). |
| // Anything that relies on having a PlatformCanvas will not work for ImageDat |
| // objects created from NaCl. |
| virtual SkCanvas* GetPlatformCanvas() = 0; |
| |
| // Get the canvas that backs this ImageData, if there is one. |
| // The canvas will be NULL: |
| // * If the image is not mapped. |
| // * Within untrusted code (which does not have skia). |
| virtual SkCanvas* GetCanvas() = 0; |
| |
| // Signal that this image is a good candidate for reuse. Call this from APIs |
| // that receive ImageData resources of a fixed size and where the plugin will |
| // release its reference to the ImageData. If the current implementation |
| // supports image data reuse (only supported out-of-process) then the |
| // ImageData will be marked and potentially cached for re-use. |
| virtual void SetIsCandidateForReuse() = 0; |
| }; |
| |
| } // namespace thunk |
| } // namespace ppapi |
| |
| #endif // PPAPI_THUNK_PPB_IMAGE_DATA_API_H_ |