From 9378dba5a2b4bad6549998256963c074c4f5901d Mon Sep 17 00:00:00 2001
From: Stefan Schueller <sschueller@nunight.com>
Date: Sun, 11 Mar 2018 02:24:06 +0100
Subject: [PATCH] Basic playback of torrents

---
 app/build.gradle                              |   5 +-
 app/src/main/AndroidManifest.xml              |   2 +
 .../activity/TorrentVideoPlayActivity.java    | 181 +++++++++++++++---
 .../peertube/activity/VideoListActivity.java  |  12 ++
 .../layout/activity_torrent_video_play.xml    |  65 +++++--
 .../res/layout/content_torrent_video_play.xml |  11 --
 app/src/main/res/values/colors.xml            |   1 +
 7 files changed, 222 insertions(+), 55 deletions(-)
 delete mode 100644 app/src/main/res/layout/content_torrent_video_play.xml

diff --git a/app/build.gradle b/app/build.gradle
index 62fbd80..1162fec 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -38,12 +38,15 @@ dependencies {
 
     implementation 'com.google.code.gson:gson:2.8.2'
 
-    implementation 'org.webrtc:google-webrtc:1.0.+'
+//    implementation 'org.webrtc:google-webrtc:1.0.+'
     implementation 'com.android.support:design:27.1.0'
 
     implementation 'com.blackboardtheory:android-iconify-fontawesome:3.0.1-SNAPSHOT'
 
     implementation 'com.github.TorrentStream:TorrentStream-Android:2.5.0'
+    implementation 'com.google.android.exoplayer:exoplayer:2.7.0'
+//    implementation "com.github.TorrentStream:TorrentStreamServer-Android:1.0.1"
+//    implementation 'com.devbrackets.android:exomedia:4.1.0'
 
     implementation 'com.android.support:support-v4:27.1.0'
     testImplementation 'junit:junit:4.12'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4b061f6..bc79cb4 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -8,6 +8,8 @@
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     <uses-permission android:name="android.permission.READ_PROFILE" />
     <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
 
     <application
         android:allowBackup="true"
diff --git a/app/src/main/java/net/schueller/peertube/activity/TorrentVideoPlayActivity.java b/app/src/main/java/net/schueller/peertube/activity/TorrentVideoPlayActivity.java
index d20c596..15cbb39 100644
--- a/app/src/main/java/net/schueller/peertube/activity/TorrentVideoPlayActivity.java
+++ b/app/src/main/java/net/schueller/peertube/activity/TorrentVideoPlayActivity.java
@@ -3,23 +3,40 @@ package net.schueller.peertube.activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.net.Uri;
 import android.os.Bundle;
+
 import android.os.Environment;
 import android.support.annotation.NonNull;
-import android.support.design.widget.FloatingActionButton;
-import android.support.design.widget.Snackbar;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
 import android.util.Log;
-import android.view.View;
+import android.widget.ProgressBar;
+import android.widget.TextView;
 import android.widget.Toast;
 
+import com.github.se_bastiaan.torrentstream.StreamStatus;
+import com.github.se_bastiaan.torrentstream.Torrent;
 import com.github.se_bastiaan.torrentstream.TorrentOptions;
 import com.github.se_bastiaan.torrentstream.TorrentStream;
+import com.github.se_bastiaan.torrentstream.listeners.TorrentListener;
+import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.ExtractorMediaSource;
+import com.google.android.exoplayer2.source.MediaSource;
+import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
+import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
+import com.google.android.exoplayer2.trackselection.TrackSelection;
+import com.google.android.exoplayer2.trackselection.TrackSelector;
+import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.android.exoplayer2.upstream.BandwidthMeter;
+import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+import com.google.android.exoplayer2.util.Util;
 
 import net.schueller.peertube.R;
 import net.schueller.peertube.model.Video;
-import net.schueller.peertube.model.VideoList;
+
 import net.schueller.peertube.network.GetVideoDataService;
 import net.schueller.peertube.network.RetrofitInstance;
 
@@ -29,27 +46,93 @@ import retrofit2.Response;
 
 public class TorrentVideoPlayActivity extends AppCompatActivity {
 
+    private static final String TAG = "TorrentVideoPlayActivity";
+
+    private ProgressBar progressBar;
+    private PlayerView videoView;
+    private SimpleExoPlayer player;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_torrent_video_play);
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
-
-        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
-        fab.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
-                        .setAction("Action", null).show();
-            }
-        });
 
         // get video ID
         Intent intent = getIntent();
         String videoID = intent.getStringExtra(VideoListActivity.EXTRA_VIDEOID);
-        Log.v("TorrentVideoPlayActivity", "click: " + videoID);
+        Log.v(TAG, "click: " + videoID);
 
+        progressBar = findViewById(R.id.progress);
+        progressBar.setMax(100);
+
+        videoView = findViewById(R.id.video_view);
+
+        // 1. Create a default TrackSelector
+        BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
+        TrackSelection.Factory videoTrackSelectionFactory =
+                new AdaptiveTrackSelection.Factory(bandwidthMeter);
+        TrackSelector trackSelector =
+                new DefaultTrackSelector(videoTrackSelectionFactory);
+
+        // 2. Create the player
+        player = ExoPlayerFactory.newSimpleInstance(getApplicationContext(), trackSelector);
+        videoView.setPlayer(player);
+
+
+        TorrentOptions torrentOptions = new TorrentOptions.Builder()
+                .saveLocation(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS))
+                .removeFilesAfterStop(true)
+                .build();
+
+        TorrentStream torrentStream = TorrentStream.init(torrentOptions);
+
+        torrentStream.addListener(new TorrentListener() {
+            @Override
+            public void onStreamReady(Torrent torrent) {
+                Log.d(TAG, "Ready");
+
+                setupVideoView(torrent);
+
+            }
+
+            @Override
+            public void onStreamProgress(Torrent torrent, StreamStatus streamStatus) {
+                if(streamStatus.bufferProgress <= 100 && progressBar.getProgress() < 100 && progressBar.getProgress() != streamStatus.bufferProgress) {
+                    //Log.d(TAG, "Progress: " + streamStatus.bufferProgress);
+                    progressBar.setProgress(streamStatus.bufferProgress);
+                }
+            }
+
+            @Override
+            public void onStreamStopped() {
+                Log.d(TAG, "Stopped");
+            }
+
+            @Override
+            public void onStreamPrepared(Torrent torrent) {
+                Log.d(TAG, "Prepared");
+
+                if(!torrentStream.isStreaming()) {
+                    torrent.startDownload();
+                }
+
+
+
+                // If you set TorrentOptions#autoDownload(false) then this is probably the place to call
+                // torrent.startDownload();
+            }
+
+            @Override
+            public void onStreamStarted(Torrent torrent) {
+                Log.d(TAG, "Started");
+            }
+
+            @Override
+            public void onStreamError(Torrent torrent, Exception e) {
+                Log.d(TAG, "Error: " + e.getMessage());
+            }
+
+        });
 
         // get video details from api
         SharedPreferences sharedPref = this.getPreferences(Context.MODE_PRIVATE);
@@ -63,27 +146,73 @@ public class TorrentVideoPlayActivity extends AppCompatActivity {
             @Override
             public void onResponse(@NonNull Call<Video> call, @NonNull Response<Video> response) {
 
-                Toast.makeText(TorrentVideoPlayActivity.this, response.body().getDescription(), Toast.LENGTH_SHORT).show();
+//                Toast.makeText(TorrentVideoPlayActivity.this, response.body().getDescription(), Toast.LENGTH_SHORT).show();
 
-                // response.body().getFiles()
-//                TorrentOptions torrentOptions = new TorrentOptions.Builder()
-//                        .removeFilesAfterStop(true)
-//                        .build();
-//
-//                TorrentStream torrentStream = TorrentStream.init(torrentOptions);
-//                torrentStream.startStream("https://butterpoject.org/test.torrent");
+                String streamUrl = null;
+
+                TextView videoName = findViewById(R.id.name);
+                TextView videoDescription = findViewById(R.id.description);
+
+                try {
+                    streamUrl = response.body().getFiles().get(0).getTorrentUrl();
+
+                    videoName.setText(response.body().getName());
+                    videoDescription.setText(response.body().getDescription());
+
+                } catch (NullPointerException e) {
+                    e.getStackTrace();
+                }
+
+                Log.v(TAG, streamUrl);
+
+                torrentStream.startStream(streamUrl);
 
             }
 
             @Override
             public void onFailure(@NonNull Call<Video> call, @NonNull Throwable t) {
-                Log.wtf("err", t.fillInStackTrace());
+                Log.wtf(TAG, t.fillInStackTrace());
                 Toast.makeText(TorrentVideoPlayActivity.this, "Something went wrong...Please try later!", Toast.LENGTH_SHORT).show();
             }
         });
 
 
+    }
+
+    private void setupVideoView(Torrent torrent) {
+
+        Log.d(TAG, "Play Video");
+
+        // Produces DataSource instances through which media data is loaded.
+        DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(),
+                Util.getUserAgent(getApplicationContext(), "yourApplicationName"), null);
+        // This is the MediaSource representing the media to be played.
+        MediaSource videoSource = new ExtractorMediaSource.Factory(dataSourceFactory)
+                .createMediaSource(Uri.fromFile(torrent.getVideoFile()));
+
+        player.setPlayWhenReady(true);
+
+        // Prepare the player with the source.
+        player.prepare(videoSource);
 
     }
 
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        player.release();
+
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        player.stop();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        player.setPlayWhenReady(true);
+    }
 }
diff --git a/app/src/main/java/net/schueller/peertube/activity/VideoListActivity.java b/app/src/main/java/net/schueller/peertube/activity/VideoListActivity.java
index 9dc60b9..49a7a62 100644
--- a/app/src/main/java/net/schueller/peertube/activity/VideoListActivity.java
+++ b/app/src/main/java/net/schueller/peertube/activity/VideoListActivity.java
@@ -1,11 +1,14 @@
 package net.schueller.peertube.activity;
 
+import android.Manifest;
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.support.annotation.NonNull;
 import android.support.design.widget.BottomNavigationView;
+import android.support.v4.app.ActivityCompat;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
@@ -254,4 +257,13 @@ public class VideoListActivity extends AppCompatActivity {
             Log.e("SecurityException", "Google Play Services not available.");
         }
     }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
+        }
+    }
 }
diff --git a/app/src/main/res/layout/activity_torrent_video_play.xml b/app/src/main/res/layout/activity_torrent_video_play.xml
index 5420612..4bfa014 100644
--- a/app/src/main/res/layout/activity_torrent_video_play.xml
+++ b/app/src/main/res/layout/activity_torrent_video_play.xml
@@ -6,28 +6,59 @@
     android:layout_height="match_parent"
     tools:context="net.schueller.peertube.activity.TorrentVideoPlayActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:theme="@style/AppTheme.AppBarOverlay">
+        android:layout_height="match_parent">
 
-        <android.support.v7.widget.Toolbar
-            android:id="@+id/toolbar"
+
+        <com.google.android.exoplayer2.ui.PlayerView
+            android:id="@+id/video_view"
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
-            android:background="?attr/colorPrimary"
-            app:popupTheme="@style/AppTheme.PopupOverlay" />
+            android:layout_height="250dp"
+            android:background="@color/black"
 
-    </android.support.design.widget.AppBarLayout>
+            app:layout_constraintDimensionRatio="H,3:1"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
 
-    <include layout="@layout/content_torrent_video_play" />
+            >
 
-    <android.support.design.widget.FloatingActionButton
-        android:id="@+id/fab"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="bottom|end"
-        android:layout_margin="@dimen/fab_margin"
-        app:srcCompat="@android:drawable/ic_dialog_email" />
+        </com.google.android.exoplayer2.ui.PlayerView>
+
+        <ProgressBar
+            android:id="@+id/progress"
+            style="?android:attr/progressBarStyleHorizontal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/video_view"
+            android:background="@color/black"
+            android:indeterminate="false"
+            android:max="100" />
+
+        <android.support.v7.widget.LinearLayoutCompat
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_below="@id/progress"
+            android:padding="16dp"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/name"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textAppearance="@style/Base.TextAppearance.AppCompat.Title" />
+
+            <TextView
+                android:id="@+id/description"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textAppearance="@style/Base.TextAppearance.AppCompat.Body1" />
+
+        </android.support.v7.widget.LinearLayoutCompat>
+
+
+    </RelativeLayout>
 
 </android.support.design.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/content_torrent_video_play.xml b/app/src/main/res/layout/content_torrent_video_play.xml
deleted file mode 100644
index 979be36..0000000
--- a/app/src/main/res/layout/content_torrent_video_play.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    app:layout_behavior="@string/appbar_scrolling_view_behavior"
-    tools:context="net.schueller.peertube.activity.TorrentVideoPlayActivity"
-    tools:showIn="@layout/activity_torrent_video_play">
-
-</android.support.constraint.ConstraintLayout>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index a284985..54e7120 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -7,4 +7,5 @@
     <color name="album_title">#4c4c4c</color>
 
     <color name="black_overlay">#66000000</color>
+    <color name="black">#000000</color>
 </resources>