1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 
18 #ifndef ANDROID_METRICSSUMMARIZER_H
19 #define ANDROID_METRICSSUMMARIZER_H
20 
21 #include <utils/threads.h>
22 #include <utils/Errors.h>
23 #include <utils/KeyedVector.h>
24 #include <utils/String8.h>
25 #include <utils/List.h>
26 
27 #include <media/IMediaAnalyticsService.h>
28 
29 
30 namespace android {
31 
32 class MetricsSummarizer
33 {
34 
35  public:
36 
37     MetricsSummarizer(const char *key);
38     virtual ~MetricsSummarizer();
39 
40     // show the key
41     const char * getKey();
42 
43     // should the record be given to this summarizer
44     bool isMine(MediaAnalyticsItem &item);
45 
46     // hand the record to this summarizer
47     void handleRecord(MediaAnalyticsItem *item);
48 
49     virtual void mergeRecord(MediaAnalyticsItem &have, MediaAnalyticsItem &incoming);
50 
51     // dump the summarized records (for dumpsys)
52     AString dumpSummary(int &slot);
53     AString dumpSummary(int &slot, const char *only);
54 
55     void setIgnorables(const char **);
56     const char **getIgnorables();
57 
58  protected:
59 
60     // various comparators
61     // "do these records have same attributes and values in those attrs"
62     // ditto, but watch for "error" fields
63     bool sameAttributes(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignoreables);
64     // attributes + from the same app/userid
65     bool sameAttributesId(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignoreables);
66 
67     static int PropSorter(const void *a, const void *b);
68     void sortProps(MediaAnalyticsItem *item);
69 
70  private:
71     const char *mKey;
72     const char **mIgnorables;
73     List<MediaAnalyticsItem *> *mSummaries;
74 
75 
76 };
77 
78 // ----------------------------------------------------------------------------
79 
80 }; // namespace android
81 
82 #endif // ANDROID_METRICSSUMMARIZER_H
83