4485ffb58d
Any file that uses the RTC_DISALLOW_* macros should #include "webrtc/base/constructormagic.h", but a shocking number of them don't. This causes trouble when we try to wean files off of #including scoped_ptr.h, since a bunch of files get their constructormagic macros only from there. Rather than fixing these errors one by one as they turn up, this CL simply ensures that every file in the WebRTC tree that uses the RTC_DISALLOW_* macros #includes "webrtc/base/constructormagic.h". BUG=webrtc:5520 Review URL: https://codereview.webrtc.org/1917043005 Cr-Commit-Position: refs/heads/master@{#12509}
81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
/*
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* Copyright (c) 2010 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MEDIA_BASE_VIDEOADAPTER_H_
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#define WEBRTC_MEDIA_BASE_VIDEOADAPTER_H_
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#include "webrtc/base/constructormagic.h"
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/base/optional.h"
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#include "webrtc/media/base/videocommon.h"
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namespace cricket {
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// VideoAdapter adapts an input video frame to an output frame based on the
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// specified input and output formats. The adaptation includes dropping frames
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// to reduce frame rate and scaling frames.
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// VideoAdapter is thread safe.
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class VideoAdapter {
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public:
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VideoAdapter();
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virtual ~VideoAdapter();
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// Sets the expected frame interval. This controls how often frames should
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// be dropped if |OnOutputFormatRequest| is called with a lower frame
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// interval.
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void SetExpectedInputFrameInterval(int64_t interval);
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// Return the adapted resolution given the input resolution. The returned
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// resolution will be 0x0 if the frame should be dropped.
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VideoFormat AdaptFrameResolution(int in_width, int in_height);
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// Requests the output frame size and frame interval from
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// |AdaptFrameResolution| to not be larger than |format|.
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void OnOutputFormatRequest(const VideoFormat& format);
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// Requests the output frame size from |AdaptFrameResolution| to not have
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// more than |max_pixel_count| pixels and have "one step" up more pixels than
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// max_pixel_count_step_up.
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void OnResolutionRequest(rtc::Optional<int> max_pixel_count,
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rtc::Optional<int> max_pixel_count_step_up);
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const VideoFormat& input_format() const;
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private:
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void SetInputFormat(const VideoFormat& format);
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bool Adapt(int max_num_pixels, int max_pixel_count_step_up);
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VideoFormat input_format_;
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VideoFormat output_format_;
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int output_num_pixels_;
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int frames_in_; // Number of input frames.
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int frames_out_; // Number of output frames.
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int frames_scaled_; // Number of frames scaled.
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int adaption_changes_; // Number of changes in scale factor.
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int previous_width_; // Previous adapter output width.
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int previous_height_; // Previous adapter output height.
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int64_t interval_next_frame_;
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// Max number of pixels requested via calls to OnOutputFormatRequest,
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// OnResolutionRequest respectively.
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// The adapted output format is the minimum of these.
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int format_request_max_pixel_count_;
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int resolution_request_max_pixel_count_;
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// The critical section to protect the above variables.
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rtc::CriticalSection critical_section_;
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RTC_DISALLOW_COPY_AND_ASSIGN(VideoAdapter);
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};
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} // namespace cricket
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#endif // WEBRTC_MEDIA_BASE_VIDEOADAPTER_H_
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