8fefe9889d
FallbackDesktopCapturerWrapper is a DesktopCapturer implementation, which owns two DesktopCapturer implementations. If the main DesktopCapturer fails, it uses the secondary capturer. The logic is now used in ScreenCapturerWinMagnifier, and it can also be shared in ScreenCapturerWinDirectx to fallback to Gdi capturer on privilege prompt or login screen. BUG=684937 Review-Url: https://codereview.webrtc.org/2697453002 Cr-Commit-Position: refs/heads/master@{#16677}
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
|
|
* 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 <memory>
|
|
|
|
#include "webrtc/base/constructormagic.h"
|
|
#include "webrtc/base/thread_checker.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 call
|
|
// DesktopCapturer::SetSharedMemoryFactory().
|
|
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);
|
|
};
|
|
|
|
// Interface used to create SharedMemory instances.
|
|
class SharedMemoryFactory {
|
|
public:
|
|
SharedMemoryFactory() {}
|
|
virtual ~SharedMemoryFactory() {}
|
|
|
|
virtual std::unique_ptr<SharedMemory> CreateSharedMemory(size_t size) = 0;
|
|
|
|
private:
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(SharedMemoryFactory);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
|
|