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// Copyright 2013 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 CC_RESOURCES_TEXTURE_MAILBOX_H_
#define CC_RESOURCES_TEXTURE_MAILBOX_H_
#include <string>
#include "base/callback.h"
#include "base/memory/shared_memory.h"
#include "cc/base/cc_export.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "ui/gfx/size.h"
namespace cc {
// TODO(skaslev, danakj) Rename this class more apropriately since now it
// can hold a shared memory resource as well as a texture mailbox.
class CC_EXPORT TextureMailbox {
public:
typedef base::Callback<void(unsigned sync_point,
bool lost_resource)> ReleaseCallback;
TextureMailbox();
TextureMailbox(const std::string& mailbox_name,
const ReleaseCallback& callback);
TextureMailbox(const gpu::Mailbox& mailbox_name,
const ReleaseCallback& callback);
TextureMailbox(const gpu::Mailbox& mailbox_name,
const ReleaseCallback& callback,
unsigned sync_point);
TextureMailbox(const gpu::Mailbox& mailbox_name,
const ReleaseCallback& callback,
unsigned texture_target,
unsigned sync_point);
TextureMailbox(base::SharedMemory* shared_memory,
gfx::Size size,
const ReleaseCallback& callback);
~TextureMailbox();
bool IsValid() const { return IsTexture() || IsSharedMemory(); }
bool IsTexture() const { return !name_.IsZero(); }
bool IsSharedMemory() const { return shared_memory_ != NULL; }
bool Equals(const TextureMailbox&) const;
bool ContainsMailbox(const gpu::Mailbox&) const;
bool ContainsHandle(base::SharedMemoryHandle handle) const;
const ReleaseCallback& callback() const { return callback_; }
const int8* data() const { return name_.name; }
const gpu::Mailbox& name() const { return name_; }
void ResetSyncPoint() { sync_point_ = 0; }
void RunReleaseCallback(unsigned sync_point, bool lost_resource) const;
void SetName(const gpu::Mailbox&);
unsigned target() const { return target_; }
unsigned sync_point() const { return sync_point_; }
base::SharedMemory* shared_memory() const { return shared_memory_; }
gfx::Size shared_memory_size() const { return shared_memory_size_; }
size_t shared_memory_size_in_bytes() const;
TextureMailbox CopyWithNewCallback(const ReleaseCallback& callback) const;
private:
gpu::Mailbox name_;
ReleaseCallback callback_;
unsigned target_;
unsigned sync_point_;
base::SharedMemory* shared_memory_;
gfx::Size shared_memory_size_;
};
} // namespace cc
#endif // CC_RESOURCES_TEXTURE_MAILBOX_H_
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