Move the Pepper implementation from webkit/glue/plugins/pepper_* to...

webkit/glue/plugins/pepper_image_data.h

-// Copyright (c) 2010 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 WEBKIT_GLUE_PLUGINS_PEPPER_IMAGE_DATA_H_
-#define WEBKIT_GLUE_PLUGINS_PEPPER_IMAGE_DATA_H_
-
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-#include "ppapi/c/ppb_image_data.h"
-#include "webkit/glue/plugins/pepper_plugin_delegate.h"
-#include "webkit/glue/plugins/pepper_resource.h"
-
-namespace skia {
-class PlatformCanvas;
-}
-
-struct PPB_ImageDataTrusted;
-class SkBitmap;
-
-namespace pepper {
-
-class ImageData : public Resource {
- public:
-  explicit ImageData(PluginModule* module);
-  virtual ~ImageData();
-
-  int width() const { return width_; }
-  int height() const { return height_; }
-
-  // Returns the image format.
-  PP_ImageDataFormat format() const { return format_; }
-
-  // Returns true if this image is mapped. False means that the image is either
-  // invalid or not mapped. See ImageDataAutoMapper below.
-  bool is_mapped() const { return !!mapped_canvas_.get(); }
-
-  PluginDelegate::PlatformImage2D* platform_image() const {
-    return platform_image_.get();
-  }
-
-  // Returns a pointer to the interface implementing PPB_ImageData that is
-  // exposed to the plugin.
-  static const PPB_ImageData* GetInterface();
-  static const PPB_ImageDataTrusted* GetTrustedInterface();
-
-  // Returns the image data format used by the browser. If the plugin uses the
-  // same format, there is no conversion. Otherwise the browser will be in
-  // charge of converting from a supported format to its native format.
-  static PP_ImageDataFormat GetNativeImageDataFormat();
-
-  // Returns true if the format is supported by the browser.
-  static bool IsImageDataFormatSupported(PP_ImageDataFormat format);
-
-  // Resource overrides.
-  virtual ImageData* AsImageData();
-
-  // PPB_ImageData implementation.
-  bool Init(PP_ImageDataFormat format,
-            int width, int height,
-            bool init_to_zero);
-  void Describe(PP_ImageDataDesc* desc) const;
-  void* Map();
-  void Unmap();
-
-  // PPB_ImageDataTrusted implementation.
-  int GetSharedMemoryHandle(uint32* byte_count) const;
-
-  // The mapped bitmap and canvas will be NULL if the image is not mapped.
-  skia::PlatformCanvas* mapped_canvas() const { return mapped_canvas_.get(); }
-  const SkBitmap* GetMappedBitmap() const;
-
-  // Swaps the guts of this image data with another.
-  void Swap(ImageData* other);
-
- private:
-  // This will be NULL before initialization, and if this ImageData is
-  // swapped with another.
-  scoped_ptr<PluginDelegate::PlatformImage2D> platform_image_;
-
-  // When the device is mapped, this is the image. Null when umapped.
-  scoped_ptr<skia::PlatformCanvas> mapped_canvas_;
-
-  PP_ImageDataFormat format_;
-  int width_;
-  int height_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageData);
-};
-
-// Manages mapping an image resource if necessary. Use this to ensure the
-// image is mapped. The destructor will put the image back into the previous
-// state. You must check is_valid() to make sure the image was successfully
-// mapped before using it.
-//
-// Example:
-//   ImageDataAutoMapper mapper(image_data);
-//   if (!mapper.is_valid())
-//     return utter_failure;
-//   image_data->mapped_canvas()->blah();  // Guaranteed valid.
-class ImageDataAutoMapper {
- public:
-  ImageDataAutoMapper(ImageData* image_data) : image_data_(image_data) {
-    if (image_data_->is_mapped()) {
-      is_valid_ = true;
-      needs_unmap_ = false;
-    } else {
-      is_valid_ = needs_unmap_ = !!image_data_->Map();
-    }
-  }
-
-  ~ImageDataAutoMapper() {
-    if (needs_unmap_)
-      image_data_->Unmap();
-  }
-
-  // Check this to see if the image was successfully mapped. If this is false,
-  // the image could not be mapped and is unusable.
-  bool is_valid() const { return is_valid_; }
-
- private:
-  ImageData* image_data_;
-  bool is_valid_;
-  bool needs_unmap_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageDataAutoMapper);
-};
-
-}  // namespace pepper
-
-#endif  // WEBKIT_GLUE_PLUGINS_PEPPER_IMAGE_DATA_H_