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// 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_PLUGINS_PPAPI_PPB_BUFFER_IMPL_H_
#define WEBKIT_PLUGINS_PPAPI_PPB_BUFFER_IMPL_H_
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "webkit/plugins/ppapi/resource.h"
struct PPB_Buffer_Dev;
namespace webkit {
namespace ppapi {
class PluginInstance;
class PPB_Buffer_Impl : public Resource {
public:
explicit PPB_Buffer_Impl(PluginInstance* instance);
virtual ~PPB_Buffer_Impl();
uint32_t size() const { return size_; }
unsigned char* mapped_buffer() { return mem_buffer_.get(); }
// Returns true if this buffer is mapped. False means that the buffer is
// either invalid or not mapped.
bool is_mapped() const { return !!mem_buffer_.get(); }
// Returns a pointer to the interface implementing PPB_PPB_Buffer_Impl that is
// exposed to the plugin.
static const PPB_Buffer_Dev* GetInterface();
// Resource overrides.
virtual PPB_Buffer_Impl* AsPPB_Buffer_Impl();
// PPB_PPB_Buffer_Impl implementation.
bool Init(uint32_t size);
void Describe(uint32_t* size_in_bytes) const;
void* Map();
void Unmap();
private:
uint32_t size_;
scoped_array<unsigned char> mem_buffer_;
DISALLOW_COPY_AND_ASSIGN(PPB_Buffer_Impl);
};
} // namespace ppapi
} // namespace webkit
#endif // WEBKIT_PLUGINS_PPAPI_PPB_BUFFER_IMPL_H_
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