1 // Copyright 2022 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_MOJO_SERVICES_WEBRTC_VIDEO_PERF_RECORDER_H_
6 #define MEDIA_MOJO_SERVICES_WEBRTC_VIDEO_PERF_RECORDER_H_
10 #include "media/base/video_codecs.h"
11 #include "media/mojo/mojom/media_types.mojom.h"
12 #include "media/mojo/mojom/webrtc_video_perf.mojom.h"
13 #include "media/mojo/services/media_mojo_export.h"
14 #include "media/mojo/services/webrtc_video_perf_history.h"
18 // This class implements the mojo interface WebrtcVideoPerfRecorder. The purpose
19 // of the class is to receive video perf data from the browser process and pass
20 // the data on to the WebrtcVideoPerfHistory save callback.
21 class MEDIA_MOJO_EXPORT WebrtcVideoPerfRecorder
22 : public media::mojom::WebrtcVideoPerfRecorder {
24 // Creates a WebrtcVideoPerfRecorder. `webrtc_video_perf_history` is required
25 // to save stats to local database and report metrics. Callers must ensure
26 // that `webrtc_video_perf_history` outlives this object; may be nullptr if
27 // database recording is currently disabled.
29 media::WebrtcVideoPerfHistory* webrtc_video_perf_history,
30 mojo::PendingReceiver<media::mojom::WebrtcVideoPerfRecorder> receiver);
32 explicit WebrtcVideoPerfRecorder(
33 WebrtcVideoPerfHistory::SaveCallback save_cb);
34 ~WebrtcVideoPerfRecorder() override;
35 WebrtcVideoPerfRecorder(const WebrtcVideoPerfRecorder&) = delete;
36 WebrtcVideoPerfRecorder& operator=(const WebrtcVideoPerfRecorder&) = delete;
38 // mojom::WebrtcVideoPerfRecorder implementation. Tracks `features` and
39 // `video_stats` individually for encode and decode. Flushes the data to the
40 // database by calling `save_cb_` whenever `features` is changed. An empty
41 // pair of `features` and `video_stats` may be passed to the function to
42 // signal that no more data is expected for the current `features` and force a
43 // call to `save_cb_` with the current state.
44 void UpdateRecord(media::mojom::WebrtcPredictionFeaturesPtr features,
45 media::mojom::WebrtcVideoStatsPtr video_stats) override;
48 // Starts a new recording of stats, this essentially means flushing any
49 // existing stats to the DB and storing the specified `features`.
50 void StartNewRecord(media::mojom::WebrtcPredictionFeaturesPtr features);
51 // Save most recent stats values to the database. Called during destruction
52 // and upon starting a new record.
53 void FinalizeRecord(int encode_or_decode_index);
55 const WebrtcVideoPerfHistory::SaveCallback save_cb_;
56 // `features_` tracks the last video configuration that was supplied to
57 // UpdateRecord(). This is individually tracked for encode and decode stats
58 // per the video configuration.
59 media::mojom::WebrtcPredictionFeatures features_[2];
60 media::mojom::WebrtcVideoStats video_stats_[2];
65 #endif // MEDIA_MOJO_SERVICES_WEBRTC_VIDEO_PERF_RECORDER_H_