mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-12 21:30:45 +01:00
88fa60357d
I've added the proper headers to the only file in Chromium which includes screen_capture_frame_queue.h (see https://chromium-review.googlesource.com/c/chromium/src/+/3836317). I've also built the remoting host and Chrome on Windows and Linux with this change and did not see any build errors. The only build error I encountered was in shared_screencast_stream when building webrtc so I added the required header there. Bug: webrtc:14378 Change-Id: Ie88e606dfa52f18514a87b87e5904424543d7df3 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/271922 Commit-Queue: Joe Downing <joedow@google.com> Reviewed-by: Alexander Cooper <alcooper@chromium.org> Cr-Commit-Position: refs/heads/main@{#37811}
75 lines
2.7 KiB
C++
75 lines
2.7 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_SCREEN_CAPTURE_FRAME_QUEUE_H_
|
|
#define MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURE_FRAME_QUEUE_H_
|
|
|
|
#include <memory>
|
|
|
|
namespace webrtc {
|
|
|
|
// Represents a queue of reusable video frames. Provides access to the 'current'
|
|
// frame - the frame that the caller is working with at the moment, and to the
|
|
// 'previous' frame - the predecessor of the current frame swapped by
|
|
// MoveToNextFrame() call, if any.
|
|
//
|
|
// The caller is expected to (re)allocate frames if current_frame() returns
|
|
// NULL. The caller can mark all frames in the queue for reallocation (when,
|
|
// say, frame dimensions change). The queue records which frames need updating
|
|
// which the caller can query.
|
|
//
|
|
// Frame consumer is expected to never hold more than kQueueLength frames
|
|
// created by this function and it should release the earliest one before trying
|
|
// to capture a new frame (i.e. before MoveToNextFrame() is called).
|
|
template <typename FrameType>
|
|
class ScreenCaptureFrameQueue {
|
|
public:
|
|
ScreenCaptureFrameQueue() = default;
|
|
~ScreenCaptureFrameQueue() = default;
|
|
|
|
ScreenCaptureFrameQueue(const ScreenCaptureFrameQueue&) = delete;
|
|
ScreenCaptureFrameQueue& operator=(const ScreenCaptureFrameQueue&) = delete;
|
|
|
|
// Moves to the next frame in the queue, moving the 'current' frame to become
|
|
// the 'previous' one.
|
|
void MoveToNextFrame() { current_ = (current_ + 1) % kQueueLength; }
|
|
|
|
// Replaces the current frame with a new one allocated by the caller. The
|
|
// existing frame (if any) is destroyed. Takes ownership of `frame`.
|
|
void ReplaceCurrentFrame(std::unique_ptr<FrameType> frame) {
|
|
frames_[current_] = std::move(frame);
|
|
}
|
|
|
|
// Marks all frames obsolete and resets the previous frame pointer. No
|
|
// frames are freed though as the caller can still access them.
|
|
void Reset() {
|
|
for (int i = 0; i < kQueueLength; i++) {
|
|
frames_[i].reset();
|
|
}
|
|
current_ = 0;
|
|
}
|
|
|
|
FrameType* current_frame() const { return frames_[current_].get(); }
|
|
|
|
FrameType* previous_frame() const {
|
|
return frames_[(current_ + kQueueLength - 1) % kQueueLength].get();
|
|
}
|
|
|
|
private:
|
|
// Index of the current frame.
|
|
int current_ = 0;
|
|
|
|
static const int kQueueLength = 2;
|
|
std::unique_ptr<FrameType> frames_[kQueueLength];
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURE_FRAME_QUEUE_H_
|