This pull requests complements pull request #2178 by reducing general computational time for the method getTimeString.
On my local machine (Desktop PC with Java) my tests with a sample size of 10000 calls to the method with param 86400001 showed a performance improvement of about 50%.
See sample code below to reproduce:
private static final StringBuilder stringBuilder = new StringBuilder();
private static final Formatter stringFormatter = new Formatter(stringBuilder, Locale.getDefault());
public static String getTimeString(int milliSeconds) {
int seconds = (milliSeconds % 60000) / 1000;
int minutes = (milliSeconds % 3600000) / 60000;
int hours = (milliSeconds % 86400000) / 3600000;
int days = (milliSeconds % (86400000 * 7)) / 86400000;
stringBuilder.setLength(0);
return days > 0 ? stringFormatter.format("%d:%02d:%02d:%02d", days, hours, minutes, seconds).toString()
: hours > 0 ? stringFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString()
: stringFormatter.format("%02d:%02d", minutes, seconds).toString();
}
public static String getTimeStringL(int milliSeconds) {
long seconds = (milliSeconds % 60000L) / 1000L;
long minutes = (milliSeconds % 3600000L) / 60000L;
long hours = (milliSeconds % 86400000L) / 3600000L;
long days = (milliSeconds % (86400000L * 7L)) / 86400000L;
stringBuilder.setLength(0);
return days > 0 ? stringFormatter.format("%d:%02d:%02d:%02d", days, hours, minutes, seconds).toString()
: hours > 0 ? stringFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString()
: stringFormatter.format("%02d:%02d", minutes, seconds).toString();
}
public static void main(String[] args) throws Exception {
final int SAMPLE_SIZE = 25000;
long[] results = new long[SAMPLE_SIZE];
for(int i = 0; i < SAMPLE_SIZE; i++) {
long now = System.nanoTime();
getTimeString(86400001);
results[i] = System.nanoTime() - now;
}
long sum = 0;
for(int i = 0; i < SAMPLE_SIZE; i++) {
sum += results[i];
}
System.out.println("Average execution time: " + (sum/SAMPLE_SIZE));
results = new long[SAMPLE_SIZE];
for(int i = 0; i < SAMPLE_SIZE; i++) {
long now = System.nanoTime();
getTimeStringL(86400001);
results[i] = System.nanoTime() - now;
}
sum = 0;
for(int i = 0; i < SAMPLE_SIZE; i++) {
sum += results[i];
}
System.out.println("Average execution time: " + (sum/SAMPLE_SIZE));
In VideoPlayer the Duration String is cached effectively by setting it to the playbackSeekBar. As the playbackSeekBar doesn't exist in BackgroundPlayer, using two addition variables will reduce performance impact of notification updates by almost 50% and thus perform similar to VideoPlayer.
This addresses issue #2170
Scenario: listening to a video on NewPipe over Bluetooth and a Notification Sound causes audio focus event AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK.
Problem: With the current implementation animateAudio would cause the audio to reach the target volume AFTER the notification sound is played, which is irritating and annoying.
Solution: animateAudio should just be used on focusGain where it is sensible to increase audio gradually. On ducking event the reaction should be immediate.
This very simple fix does this. Please approve.
Post-processing infrastructure
* remove interfaces with one implementation
* fix download resources with unknow length
* marquee style for ProgressDrawable
* "view details" option in mission context menu
* notification for finished downloads
* postprocessing infrastructure: sub-missions, circular file, layers for layers of abstractions for Java IO streams
* Mp4 muxing (only DASH brand)
* WebM muxing
* Captions downloading
* alert dialog for overwrite existing downloads finished or not.
Misc changes
* delete SQLiteDownloadDataSource.java
* delete DownloadMissionSQLiteHelper.java
* implement Localization from #114
Misc fixes (this branch)
* restore old mission listeners variables. Prevents registered listeners get de-referenced on low-end devices
* DownloadManagerService.checkForRunningMission() now return false if the mission has a error.
* use Intent.FLAG_ACTIVITY_NEW_TASK when launching an activity from gigaget threads (apparently it is required in old versions of android)
More changes
* proper error handling "infrastructure"
* queue instead of multiple downloads
* move serialized pending downloads (.giga files) to app data
* stop downloads when swicthing to mobile network (never works, see 2nd point)
* save the thread count for next downloads
* a lot of incoherences fixed
* delete DownloadManagerTest.java (too many changes to keep this file updated)
