Index: media/base/android/media_statistics.cc |
diff --git a/media/base/android/media_statistics.cc b/media/base/android/media_statistics.cc |
deleted file mode 100644 |
index e141bbbc5839564c462a555b7cbe7bf4e79956a4..0000000000000000000000000000000000000000 |
--- a/media/base/android/media_statistics.cc |
+++ /dev/null |
@@ -1,125 +0,0 @@ |
-// Copyright 2015 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "media/base/android/media_statistics.h" |
- |
-#include "base/logging.h" |
-#include "base/metrics/histogram_macros.h" |
-#include "media/base/android/demuxer_stream_player_params.h" |
- |
-namespace media { |
- |
-// Minimum playback interval to report. |
-const int kMinDurationInSeconds = 2; |
- |
-// Maximum playback interval to report. |
-const int kMaxDurationInSeconds = 3600; |
- |
-// Number of slots in the histogram for playback interval. |
-const int kNumDurationSlots = 50; |
- |
-// For easier reading. |
-const int kOneMillion = 1000000; |
- |
-void FrameStatistics::IncrementLateFrameCount() { |
- // Do not collect the late frame if this is the first frame after the start. |
- // Right now we do not want to consider the late video frame which is the |
- // first after preroll, preroll may be inacurate in this respect. |
- // The first audio frame cannot be late by definition and by not considering |
- // it we can simplify audio decoder code. |
- if (total == 1) |
- return; |
- |
- ++late; |
-} |
- |
-MediaStatistics::MediaStatistics() {} |
- |
-MediaStatistics::~MediaStatistics() {} |
- |
-void MediaStatistics::Start(base::TimeDelta current_playback_time) { |
- DVLOG(1) << __FUNCTION__; |
- |
- if (start_time_ == kNoTimestamp) { |
- Clear(); |
- start_time_ = current_playback_time; |
- } |
-} |
- |
-void MediaStatistics::StopAndReport(base::TimeDelta current_playback_time) { |
- DVLOG(1) << __FUNCTION__; |
- |
- if (start_time_ == kNoTimestamp) |
- return; // skip if there was no prior Start(). |
- |
- if (current_playback_time == kNoTimestamp) { |
- // Cancel the start event and skip if current time is unknown. |
- start_time_ = kNoTimestamp; |
- return; |
- } |
- |
- base::TimeDelta duration = current_playback_time - start_time_; |
- |
- // Reset start time. |
- start_time_ = kNoTimestamp; |
- |
- if (duration < base::TimeDelta::FromSeconds(kMinDurationInSeconds)) |
- return; // duration is too short. |
- |
- if (duration > base::TimeDelta::FromSeconds(kMaxDurationInSeconds)) |
- return; // duration is too long. |
- |
- Report(duration); |
-} |
- |
-void MediaStatistics::Clear() { |
- start_time_ = kNoTimestamp; |
- audio_frame_stats_.Clear(); |
- video_frame_stats_.Clear(); |
- num_starvations_ = 0; |
-} |
- |
-void MediaStatistics::Report(base::TimeDelta duration) { |
- DVLOG(1) << __FUNCTION__ << " duration:" << duration |
- << " audio frames:" |
- << audio_frame_stats_.late << "/" << audio_frame_stats_.total |
- << " video frames:" |
- << video_frame_stats_.late << "/" << video_frame_stats_.total |
- << " starvations:" << num_starvations_; |
- |
- // Playback duration is the time interval between the moment playback starts |
- // and the moment it is interrupted either by stopping or by seeking, changing |
- // to full screen, minimizing the browser etc. The interval is measured by |
- // media time. |
- |
- UMA_HISTOGRAM_CUSTOM_TIMES( |
- "Media.MSE.PlaybackDuration", duration, |
- base::TimeDelta::FromSeconds(kMinDurationInSeconds), |
- base::TimeDelta::FromSeconds(kMaxDurationInSeconds), kNumDurationSlots); |
- |
- // Number of late frames per one million frames. |
- |
- if (audio_frame_stats_.total) { |
- UMA_HISTOGRAM_COUNTS( |
- "Media.MSE.LateAudioFrames", |
- kOneMillion * audio_frame_stats_.late / audio_frame_stats_.total); |
- } |
- |
- if (video_frame_stats_.total) { |
- UMA_HISTOGRAM_COUNTS( |
- "Media.MSE.LateVideoFrames", |
- kOneMillion * video_frame_stats_.late / video_frame_stats_.total); |
- } |
- |
- // Number of starvations per one million frames. |
- |
- uint32_t total_frames = audio_frame_stats_.total ? audio_frame_stats_.total |
- : video_frame_stats_.total; |
- if (total_frames) { |
- UMA_HISTOGRAM_COUNTS("Media.MSE.Starvations", |
- kOneMillion * num_starvations_ / total_frames); |
- } |
-} |
- |
-} // namespace media |