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code cleanup

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* migrate few annotations to androidx
* mission recovery: better error handling (except StreamExtractor.getErrorMessage() method always returns an error)
* post-processing: more detailed progress

[file specific changes]

DownloadMission.java
* remove redundant/boilerplate code (again)
* make few variables volatile
* better file "length" approximation
* use "done" variable to count the amount of bytes downloaded (simplify percent calc in UI code)

Postprocessing.java
* if case of error use "ERROR_POSTPROCESSING" instead of "ERROR_UNKNOWN_EXCEPTION"
* simplify source stream init

DownloadManager.java
* move all "service message sending" code to DownloadMission
* remove not implemented method "notifyUserPendingDownloads()" also his unused strings

DownloadManagerService.java
* use START_STICKY instead of START_NOT_STICKY
* simplify addMissionEventListener()/removeMissionEventListener() methods (always are called from the main thread)

Deleter.java
* better method definition

MissionAdapter.java
* better method definition
* code cleanup
* the UI is now refreshed every 750ms
* simplify download progress calculation
* indicates if the download is actually recovering
* smooth download speed measure
* show estimated remain time

MainFragment.java:
* check if viewPager is null (issued by "Apply changes" feature of Android Studio)
This commit is contained in:
kapodamy 2019-10-09 23:49:23 -03:00
parent 763995d4c9
commit e6d9d8e26d
53 changed files with 554 additions and 622 deletions
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29
app/src/main/java/us/shandian/giga/get/DownloadRunnableFallback.java
View file

@ -1,8 +1,9 @@
package us.shandian.giga.get;
import androidx.annotation.NonNull;
import android.util.Log;
import androidx.annotation.NonNull;
import org.schabi.newpipe.streams.io.SharpStream;
import java.io.IOException;
@ -47,22 +48,10 @@ public class DownloadRunnableFallback extends Thread {
if (mF != null) mF.close();
}
private long loadPosition() {
synchronized (mMission.LOCK) {
return mMission.fallbackResumeOffset;
}
}
private void savePosition(long position) {
synchronized (mMission.LOCK) {
mMission.fallbackResumeOffset = position;
}
}
@Override
public void run() {
boolean done;
long start = loadPosition();
long start = mMission.fallbackResumeOffset;
if (DEBUG && !mMission.unknownLength && start > 0) {
Log.i(TAG, "Resuming a single-thread download at " + start);
@ -83,6 +72,7 @@ public class DownloadRunnableFallback extends Thread {
// check if the download can be resumed
if (mConn.getResponseCode() == 416 && start > 0) {
mMission.notifyProgress(-start);
start = 0;
mRetryCount--;
throw new DownloadMission.HttpError(416);
@ -92,6 +82,11 @@ public class DownloadRunnableFallback extends Thread {
if (!mMission.unknownLength)
mMission.unknownLength = Utility.getContentLength(mConn) == -1;
if (mMission.unknownLength || mConn.getResponseCode() == 200) {
// restart amount of bytes downloaded
mMission.done = mMission.offsets[mMission.current] - mMission.offsets[0];
}
mF = mMission.storage.getStream();
mF.seek(mMission.offsets[mMission.current] + start);
@ -113,14 +108,14 @@ public class DownloadRunnableFallback extends Thread {
} catch (Exception e) {
dispose();
savePosition(start);
mMission.fallbackResumeOffset = start;
if (!mMission.running || e instanceof ClosedByInterruptException) return;
if (e instanceof HttpError && ((HttpError) e).statusCode == ERROR_HTTP_FORBIDDEN) {
// for youtube streams. The url has expired, recover
dispose();
mMission.doRecover(e);
mMission.doRecover(ERROR_HTTP_FORBIDDEN);
return;
}
@ -140,7 +135,7 @@ public class DownloadRunnableFallback extends Thread {
if (done) {
mMission.notifyFinished();
} else {
savePosition(start);
mMission.fallbackResumeOffset = start;
}
}