mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-13 05:40:42 +01:00
604fd2f1ab
Bug: webrtc:13555, webrtc:13082 Change-Id: I2c2cbcbd918f0cfa970c1a964893220ba11d4b41 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/247960 Reviewed-by: Artem Titov <titovartem@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: (Daniel.L) Byoungchan Lee <daniel.l@hpcnt.com> Cr-Commit-Position: refs/heads/main@{#35771}
82 lines
2.4 KiB
C++
82 lines
2.4 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 MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
|
#define MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|
|
|
|
#include <stddef.h>
|
|
|
|
#if defined(WEBRTC_WIN)
|
|
// Forward declare HANDLE in a windows.h compatible way so that we can avoid
|
|
// including windows.h.
|
|
typedef void* HANDLE;
|
|
#endif
|
|
|
|
#include <memory>
|
|
|
|
#include "rtc_base/system/rtc_export.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 RTC_EXPORT 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() {}
|
|
|
|
SharedMemory(const SharedMemory&) = delete;
|
|
SharedMemory& operator=(const SharedMemory&) = delete;
|
|
|
|
protected:
|
|
SharedMemory(void* data, size_t size, Handle handle, int id);
|
|
|
|
void* const data_;
|
|
const size_t size_;
|
|
const Handle handle_;
|
|
const int id_;
|
|
};
|
|
|
|
// Interface used to create SharedMemory instances.
|
|
class SharedMemoryFactory {
|
|
public:
|
|
SharedMemoryFactory() {}
|
|
virtual ~SharedMemoryFactory() {}
|
|
|
|
SharedMemoryFactory(const SharedMemoryFactory&) = delete;
|
|
SharedMemoryFactory& operator=(const SharedMemoryFactory&) = delete;
|
|
|
|
virtual std::unique_ptr<SharedMemory> CreateSharedMemory(size_t size) = 0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_DESKTOP_CAPTURE_SHARED_MEMORY_H_
|