- added: variable load check interval for progressive stream.

- added: preferences to allow user setting of above.

Author: karyogamy

app/src/main/java/org/schabi/newpipe/player/helper/PlayerDataSource.java

@@ -31,11 +31,13 @@ public class PlayerDataSource {
     private static final int MANIFEST_MINIMUM_RETRY = 5;
     private static final int EXTRACTOR_MINIMUM_RETRY = Integer.MAX_VALUE;
 
+    private final int continueLoadingCheckIntervalBytes;
     private final DataSource.Factory cacheDataSourceFactory;
     private final DataSource.Factory cachelessDataSourceFactory;
 
     public PlayerDataSource(@NonNull final Context context, @NonNull final String userAgent,
                             @NonNull final TransferListener transferListener) {
+        continueLoadingCheckIntervalBytes = PlayerHelper.getProgressiveLoadIntervalBytes(context);
         cacheDataSourceFactory = new CacheFactory(context, userAgent, transferListener);
         cachelessDataSourceFactory
                 = new DefaultDataSourceFactory(context, userAgent, transferListener);
@@ -91,6 +93,7 @@ public DashMediaSource.Factory getDashMediaSourceFactory() {
 
     public ProgressiveMediaSource.Factory getExtractorMediaSourceFactory() {
         return new ProgressiveMediaSource.Factory(cacheDataSourceFactory)
+                .setContinueLoadingCheckIntervalBytes(continueLoadingCheckIntervalBytes)
                 .setLoadErrorHandlingPolicy(
                         new DefaultLoadErrorHandlingPolicy(EXTRACTOR_MINIMUM_RETRY));
     }

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHelper.java

@@ -34,6 +34,7 @@
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player.RepeatMode;
 import com.google.android.exoplayer2.SeekParameters;
+import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.ExoTrackSelection;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
@@ -391,6 +392,19 @@ public static boolean globalScreenOrientationLocked(final Context context) {
                 context.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0) == 0;
     }
 
+    public static int getProgressiveLoadIntervalBytes(@NonNull final Context context) {
+        final String preferredIntervalBytes = getPreferences(context).getString(
+                context.getString(R.string.progressive_load_interval_key),
+                context.getString(R.string.progressive_load_interval_default_value));
+
+        if (context.getString(R.string.progressive_load_interval_default_value)
+                .equals(preferredIntervalBytes)) {
+            return ProgressiveMediaSource.DEFAULT_LOADING_CHECK_INTERVAL_BYTES;
+        }
+        // Keeping the same KiB unit used by ProgressiveMediaSource
+        return Integer.parseInt(preferredIntervalBytes) * 1024;
+    }
+
     ////////////////////////////////////////////////////////////////////////////
     // Private helpers
     ////////////////////////////////////////////////////////////////////////////

app/src/main/res/values/settings_keys.xml

@@ -55,6 +55,23 @@
         <item>30000</item>
     </string-array>
 
+    <string name="progressive_load_interval_key">progressive_load_interval</string>
+    <string name="progressive_load_interval_default_value">default</string>
+    <string-array name="progressive_load_interval_descriptions">
+        <item>1 KiB</item>
+        <item>16 KiB</item>
+        <item>64 KiB</item>
+        <item>256 KiB</item>
+        <item>@string/progressive_load_interval_default</item>
+    </string-array>
+    <string-array name="progressive_load_interval_values">
+        <item>1</item>
+        <item>16</item>
+        <item>64</item>
+        <item>256</item>
+        <item>default</item>
+    </string-array>
+
     <string name="minimize_on_exit_key">minimize_on_exit_key</string>
     <string name="minimize_on_exit_value">@string/minimize_on_exit_background_key</string>
     <string name="minimize_on_exit_none_key">minimize_on_exit_none_key</string>

app/src/main/res/values/strings.xml

@@ -78,6 +78,8 @@
     <string name="use_inexact_seek_title">Use fast inexact seek</string>
     <string name="use_inexact_seek_summary">Inexact seek allows the player to seek to positions faster with reduced precision. Seeking for 5, 15 or 25 seconds doesn\'t work with this</string>
     <string name="seek_duration_title">Fast-forward/-rewind seek duration</string>
+    <string name="progressive_load_interval_title">Playback load interval size</string>
+    <string name="progressive_load_interval_summary">Change the load interval size (currently at %s). A lower value may speed up initial video loading. Changes require a player restart.</string>
     <string name="clear_queue_confirmation_title">Ask for confirmation before clearing a queue</string>
     <string name="clear_queue_confirmation_summary">Switching from one player to another may replace your queue</string>
     <string name="clear_queue_confirmation_description">The active player queue will be replaced</string>
@@ -702,4 +704,6 @@
     <!-- Show Channel Details -->
     <string name="error_show_channel_details">Error at Show Channel Details</string>
     <string name="loading_channel_details">Loading Channel Details…</string>
+    <!-- Progressive Load Interval -->
+    <string name="progressive_load_interval_default">ExoPlayer default</string>
 </resources>

app/src/main/res/xml/video_audio_settings.xml

@@ -206,6 +206,16 @@
             app:singleLineTitle="false"
             app:iconSpaceReserved="false" />
 
+        <ListPreference
+            android:defaultValue="@string/progressive_load_interval_default_value"
+            android:entries="@array/progressive_load_interval_descriptions"
+            android:entryValues="@array/progressive_load_interval_values"
+            android:key="@string/progressive_load_interval_key"
+            android:summary="@string/progressive_load_interval_summary"
+            android:title="@string/progressive_load_interval_title"
+            app:singleLineTitle="false"
+            app:iconSpaceReserved="false" />
+
         <SwitchPreferenceCompat
             android:defaultValue="false"
             android:key="@string/clear_queue_confirmation_key"