media/base/media_log_event.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BASE_MEDIA_LOG_EVENT_H_
   6 #define MEDIA_BASE_MEDIA_LOG_EVENT_H_
   7
   8 #include "base/time/time.h"
   9 #include "base/values.h"
  10
  11 namespace media {
  12
  13 struct MediaLogEvent {
  14   MediaLogEvent() {}
  15
  16   MediaLogEvent(const MediaLogEvent& event) {
  17     *this = event;
  18   }
  19
  20   MediaLogEvent& operator=(const MediaLogEvent& event) {
  21     id = event.id;
  22     type = event.type;
  23     scoped_ptr<base::DictionaryValue> event_copy(event.params.DeepCopy());
  24     params.Swap(event_copy.get());
  25     time = event.time;
  26     return *this;
  27   }
  28
  29   enum Type {
  30     // A WebMediaPlayer is being created or destroyed.
  31     // params: none.
  32     WEBMEDIAPLAYER_CREATED,
  33     WEBMEDIAPLAYER_DESTROYED,
  34
  35     // A Pipeline is being created or destroyed.
  36     // params: none.
  37     PIPELINE_CREATED,
  38     PIPELINE_DESTROYED,
  39
  40     // A media player is loading a resource.
  41     // params: "url": <URL of the resource>.
  42     LOAD,
  43
  44     // A media player has started seeking.
  45     // params: "seek_target": <number of seconds to which to seek>.
  46     SEEK,
  47
  48     // A media player has been told to play or pause.
  49     // params: none.
  50     PLAY,
  51     PAUSE,
  52
  53     // The state of Pipeline has changed.
  54     // params: "pipeline_state": <string name of the state>.
  55     PIPELINE_STATE_CHANGED,
  56
  57     // An error has occurred in the pipeline.
  58     // params: "pipeline_error": <string name of the error>.
  59     PIPELINE_ERROR,
  60
  61     // The size of the video has been determined.
  62     // params: "width": <integral width of the video>.
  63     //         "height": <integral height of the video>.
  64     VIDEO_SIZE_SET,
  65
  66     // A property of the pipeline has been set by a filter.
  67     // These take a single parameter based upon the name of the event and of
  68     // the appropriate type. e.g. DURATION_SET: "duration" of type TimeDelta.
  69     DURATION_SET,
  70     TOTAL_BYTES_SET,
  71     NETWORK_ACTIVITY_SET,
  72
  73     // Audio/Video stream playback has ended.
  74     ENDED,
  75
  76     // Text stream playback has ended.
  77     TEXT_ENDED,
  78
  79     // The extents of the sliding buffer have changed.
  80     // params: "buffer_start": <first buffered byte>.
  81     //         "buffer_current": <current offset>.
  82     //         "buffer_end": <last buffered byte>.
  83     BUFFERED_EXTENTS_CHANGED,
  84
  85     // Errors reported by Media Source Extensions code.
  86     MEDIA_SOURCE_ERROR,
  87     // params: "error": Error string describing the error detected.
  88
  89     // A property has changed without any special event occurring.
  90     PROPERTY_CHANGE,
  91
  92     TYPE_LAST = PROPERTY_CHANGE
  93   };
  94
  95   int32 id;
  96   Type type;
  97   base::DictionaryValue params;
  98   base::TimeTicks time;
  99 };
 100
 101 }  // namespace media
 102
 103 #endif  // MEDIA_BASE_MEDIA_LOG_EVENT_H_