- Add method in MediaPlayerService to collect and pull
codec usage (duration) for the battery app
- Collect MediaPlayer decoding usage data
Change-Id: I0ef4e32b6a041ba1fe73c19f9c67185c61d03965
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 60bdd62..8c6f76b 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -23,6 +23,7 @@
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/time.h>
#include <dirent.h>
#include <unistd.h>
@@ -51,6 +52,8 @@
#include <media/Metadata.h>
#include <media/AudioTrack.h>
+#include <private/android_filesystem_config.h>
+
#include "MediaRecorderClient.h"
#include "MediaPlayerService.h"
#include "MetadataRetrieverClient.h"
@@ -1762,4 +1765,93 @@
return 0;
}
+void MediaPlayerService::addBatteryData(uint32_t params)
+{
+ Mutex::Autolock lock(mLock);
+ int uid = IPCThreadState::self()->getCallingUid();
+ if (uid == AID_MEDIA) {
+ return;
+ }
+ int index = mBatteryData.indexOfKey(uid);
+ int32_t time = systemTime() / 1000000L;
+
+ if (index < 0) { // create a new entry for this UID
+ BatteryUsageInfo info;
+ info.audioTotalTime = 0;
+ info.videoTotalTime = 0;
+ info.audioLastTime = 0;
+ info.videoLastTime = 0;
+ info.refCount = 0;
+
+ mBatteryData.add(uid, info);
+ }
+
+ BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
+
+ if (params & kBatteryDataCodecStarted) {
+ if (params & kBatteryDataTrackAudio) {
+ info.audioLastTime -= time;
+ info.refCount ++;
+ }
+ if (params & kBatteryDataTrackVideo) {
+ info.videoLastTime -= time;
+ info.refCount ++;
+ }
+ } else {
+ if (info.refCount == 0) {
+ LOGW("Battery track warning: refCount is already 0");
+ return;
+ } else if (info.refCount < 0) {
+ LOGE("Battery track error: refCount < 0");
+ mBatteryData.removeItem(uid);
+ return;
+ }
+
+ if (params & kBatteryDataTrackAudio) {
+ info.audioLastTime += time;
+ info.refCount --;
+ }
+ if (params & kBatteryDataTrackVideo) {
+ info.videoLastTime += time;
+ info.refCount --;
+ }
+
+ // no stream is being played by this UID
+ if (info.refCount == 0) {
+ info.audioTotalTime += info.audioLastTime;
+ info.audioLastTime = 0;
+ info.videoTotalTime += info.videoLastTime;
+ info.videoLastTime = 0;
+ }
+ }
+}
+
+status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
+ Mutex::Autolock lock(mLock);
+ BatteryUsageInfo info;
+ int size = mBatteryData.size();
+
+ reply->writeInt32(size);
+ int i = 0;
+
+ while (i < size) {
+ info = mBatteryData.valueAt(i);
+
+ reply->writeInt32(mBatteryData.keyAt(i)); //UID
+ reply->writeInt32(info.audioTotalTime);
+ reply->writeInt32(info.videoTotalTime);
+
+ info.audioTotalTime = 0;
+ info.videoTotalTime = 0;
+
+ // remove the UID entry where no stream is being played
+ if (info.refCount <= 0) {
+ mBatteryData.removeItemsAt(i);
+ size --;
+ i --;
+ }
+ i++;
+ }
+ return NO_ERROR;
+}
} // namespace android
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 62f8ed6..9f41db0 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -204,7 +204,31 @@
void removeClient(wp<Client> client);
+ // For battery usage tracking purpose
+ struct BatteryUsageInfo {
+ // how many streams are being played by one UID
+ int refCount;
+ // a temp variable to store the duration(ms) of audio codecs
+ // when we start a audio codec, we minus the system time from audioLastTime
+ // when we pause it, we add the system time back to the audioLastTime
+ // so after the pause, audioLastTime = pause time - start time
+ // if multiple audio streams are played (or recorded), then audioLastTime
+ // = the total playing time of all the streams
+ int32_t audioLastTime;
+ // when all the audio streams are being paused, we assign audioLastTime to
+ // this variable, so this value could be provided to the battery app
+ // in the next pullBatteryData call
+ int32_t audioTotalTime;
+ int32_t videoLastTime;
+ int32_t videoTotalTime;
+ };
+ KeyedVector<int, BatteryUsageInfo> mBatteryData;
+
+ // Collect info of the codec usage from media player and media recorder
+ virtual void addBatteryData(uint32_t params);
+ // API for the Battery app to pull the data of codecs usage
+ virtual status_t pullBatteryData(Parcel* reply);
private:
class Client : public BnMediaPlayer {