add loading interval size option

app/src/main/java/com/github/libretube/constants/PreferenceKeys.kt

@@ -78,6 +78,7 @@ object PreferenceKeys {
     const val PLAYER_RESIZE_MODE = "player_resize_mode"
     const val SB_SKIP_MANUALLY = "sb_skip_manually_key"
     const val LIMIT_HLS = "limit_hls"
+    const val PROGRESSIVE_LOADING_INTERVAL_SIZE = "progressive_loading_interval"
 
     /**
      * Background mode

app/src/main/java/com/github/libretube/ui/fragments/PlayerFragment.kt

@@ -167,6 +167,7 @@ class PlayerFragment : BaseFragment() {
     private var skipButtonsEnabled = false
     private var pipEnabled = true
     private var skipSegmentsManually = false
+    private var progressiveLoadingIntervalSize = "64"
 
     /**
      * for autoplay
@@ -339,6 +340,11 @@ class PlayerFragment : BaseFragment() {
             PreferenceKeys.SB_SKIP_MANUALLY,
             false
         )
+
+        progressiveLoadingIntervalSize = PreferenceHelper.getString(
+            PreferenceKeys.PROGRESSIVE_LOADING_INTERVAL_SIZE,
+            "64"
+        )
     }
 
     @SuppressLint("ClickableViewAccessibility")
@@ -467,7 +473,7 @@ class PlayerFragment : BaseFragment() {
                         videosNameArray[which] == "LBRY HLS"
                     ) {
                         // set the progressive media source
-                        setProgressiveMediaSource(videosUrlArray[which])
+                        setHLSMediaSource(videosUrlArray[which])
                     } else {
                         val videoUri = videosUrlArray[which]
                         val audioUrl =
@@ -1192,7 +1198,7 @@ class PlayerFragment : BaseFragment() {
 
     /**
      * Get the name of the currently played chapter
-      */
+     */
     private fun getCurrentChapterIndex(): Int {
         val currentPosition = exoPlayer.currentPosition
         var chapterIndex = 0
@@ -1211,24 +1217,35 @@ class PlayerFragment : BaseFragment() {
         videoUri: Uri,
         audioUrl: String
     ) {
+        val checkIntervalSize = when (progressiveLoadingIntervalSize) {
+            "default" -> ProgressiveMediaSource.DEFAULT_LOADING_CHECK_INTERVAL_BYTES
+            else -> progressiveLoadingIntervalSize.toInt() * 1024
+        }
+
         val dataSourceFactory: DataSource.Factory =
             DefaultHttpDataSource.Factory()
+
         val videoItem: MediaItem = MediaItem.Builder()
             .setUri(videoUri)
             .setSubtitleConfigurations(subtitle)
             .build()
+
         val videoSource: MediaSource =
-            DefaultMediaSourceFactory(dataSourceFactory)
+            ProgressiveMediaSource.Factory(dataSourceFactory)
+                .setContinueLoadingCheckIntervalBytes(checkIntervalSize)
                 .createMediaSource(videoItem)
+
         val audioSource: MediaSource =
             ProgressiveMediaSource.Factory(dataSourceFactory)
+                .setContinueLoadingCheckIntervalBytes(checkIntervalSize)
                 .createMediaSource(fromUri(audioUrl))
+
         val mergeSource: MediaSource =
             MergingMediaSource(videoSource, audioSource)
         exoPlayer.setMediaSource(mergeSource)
     }
 
-    private fun setProgressiveMediaSource(uri: Uri) {
+    private fun setHLSMediaSource(uri: Uri) {
         val mediaItem: MediaItem = MediaItem.Builder()
             .setUri(uri)
             .setSubtitleConfigurations(subtitle)
@@ -1317,7 +1334,7 @@ class PlayerFragment : BaseFragment() {
 
         // if default resolution isn't set or available, use hls if available
         if (streams.hls != null) {
-            setProgressiveMediaSource(Uri.parse(streams.hls))
+            setHLSMediaSource(Uri.parse(streams.hls))
             return
         }
 

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

@@ -408,4 +408,22 @@
         <item>512</item>
     </string-array>
 
+    <string-array name="loadingInterval">
+        <item>1KiB</item>
+        <item>16KiB</item>
+        <item>64KiB</item>
+        <item>128KiB</item>
+        <item>256KiB</item>
+        <item>@string/default_load_interval</item>
+    </string-array>
+
+    <string-array name="loadingIntervalValues">
+        <item>1</item>
+        <item>16</item>
+        <item>64</item>
+        <item>128</item>
+        <item>256</item>
+        <item>default</item>
+    </string-array>
+
 </resources>

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

@@ -334,6 +334,9 @@
     <string name="select_at_least_one">Please select at least one item</string>
     <string name="change_region">Trending seems to be unavailable for the current region. Please select another in the settings.</string>
     <string name="limit_hls">Limit HLS to 1080p</string>
+    <string name="progressive_load_interval">Progressive load interval size</string>
+    <string name="progressive_load_interval_summary">A lower value may speed up initial video loading.</string>
+    <string name="default_load_interval">Default</string>
 
     <!-- Notification channel strings -->
     <string name="download_channel_name">Download Service</string>

app/src/main/res/xml/audio_video_settings.xml

@@ -72,6 +72,15 @@
             android:title="@string/limit_hls"
             app:key="limit_hls" />
 
+        <ListPreference
+            android:icon="@drawable/ic_loading"
+            app:defaultValue="64"
+            app:entries="@array/loadingInterval"
+            app:entryValues="@array/loadingIntervalValues"
+            app:key="progressive_loading_interval"
+            app:summary="@string/progressive_load_interval_summary"
+            app:title="@string/progressive_load_interval" />
+
     </PreferenceCategory>
 
     <PreferenceCategory app:title="@string/background_mode">