/*
|
* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
|
*
|
* Use of this source code is governed by a BSD-style license
|
* that can be found in the LICENSE file in the root of the source
|
* tree. An additional intellectual property rights grant can be found
|
* in the file PATENTS. All contributing project authors may
|
* be found in the AUTHORS file in the root of the source tree.
|
*/
|
|
#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
#define WEBRTC_MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
|
#include <stddef.h>
|
|
#if defined(WEBRTC_WIN)
|
#include <windows.h>
|
#endif
|
|
#include "webrtc/base/constructormagic.h"
|
#include "webrtc/typedefs.h"
|
|
namespace webrtc {
|
|
// SharedMemory is a base class for shared memory. It stores all required
|
// parameters of the buffer, but doesn't have any logic to allocate or destroy
|
// the actual buffer. DesktopCapturer consumers that need to use shared memory
|
// for video frames must extend this class with creation and destruction logic
|
// specific for the target platform and then implement
|
// DesktopCapturer::Delegate::CreateSharedMemory() as appropriate.
|
class SharedMemory {
|
public:
|
#if defined(WEBRTC_WIN)
|
typedef HANDLE Handle;
|
static const Handle kInvalidHandle;
|
#else
|
typedef int Handle;
|
static const Handle kInvalidHandle;
|
#endif
|
|
void* data() const { return data_; }
|
size_t size() const { return size_; }
|
|
// Platform-specific handle of the buffer.
|
Handle handle() const { return handle_; }
|
|
// Integer identifier that can be used used by consumers of DesktopCapturer
|
// interface to identify shared memory buffers it created.
|
int id() const { return id_; }
|
|
virtual ~SharedMemory() {}
|
|
protected:
|
SharedMemory(void* data, size_t size, Handle handle, int id);
|
|
void* const data_;
|
const size_t size_;
|
const Handle handle_;
|
const int id_;
|
|
private:
|
RTC_DISALLOW_COPY_AND_ASSIGN(SharedMemory);
|
};
|
|
} // namespace webrtc
|
|
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
