ppapi/shared_impl/ppb_image_data_shared.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_
   6 #define PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_
   7
   8 #include "ppapi/c/pp_bool.h"
   9 #include "ppapi/c/ppb_image_data.h"
  10 #include "ppapi/shared_impl/ppapi_shared_export.h"
  11
  12 namespace ppapi {
  13
  14 // Contains the implementation of some simple image data functions that are
  15 // shared between the proxy and Chrome's implementation. Since these functions
  16 // are just lists of what we support, it's much easier to just have the same
  17 // code run in the plugin process than to proxy it.
  18 //
  19 // It's possible the implementation will get more complex. In this case, it's
  20 // probably best to have some kind of "configuration" message that the renderer
  21 // sends to the plugin process on startup that contains all of these kind of
  22 // settings.
  23 class PPAPI_SHARED_EXPORT PPB_ImageData_Shared {
  24  public:
  25   enum ImageDataType {
  26     // An ImageData backed by a PlatformCanvas. You must create this type if
  27     // you intend the ImageData to be usable in platform-specific APIs (like
  28     // font rendering or rendering widgets like scrollbars). This type is not
  29     // available in untrusted (NaCl) plugins.
  30     PLATFORM,
  31     // An ImageData that doesn't need access to the platform-specific canvas.
  32     // This is backed by a simple shared memory buffer. This is the only type
  33     // of ImageData that can be used by untrusted (NaCl) plugins.
  34     SIMPLE
  35   };
  36
  37   static PP_ImageDataFormat GetNativeImageDataFormat();
  38   static PP_Bool IsImageDataFormatSupported(PP_ImageDataFormat format);
  39   static PP_Bool IsImageDataDescValid(const PP_ImageDataDesc& desc);
  40 };
  41
  42 }  // namespace ppapi
  43
  44 #endif  // PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_