Parse PLAYLIST.UMD: streams, chapters and timestamps

- Add little-endian readers to UmdIsoFile
- Playlist parser (streams + chapter markers) ported from JPCSP
- dump command now lists streams, durations and chapter markers
- Unit test for chapter/timestamp mapping

cli/src/main/java/dev/quoije/umd/cli/Main.java

@@ -3,6 +3,7 @@ package dev.quoije.umd.cli;
 
 import dev.quoije.umd.iso.UmdIsoFile;
 import dev.quoije.umd.iso.UmdIsoReader;
+import dev.quoije.umd.playlist.Playlist;
 import dev.quoije.umd.sfo.Sfo;
 
 import java.io.IOException;
@@ -65,6 +66,8 @@ public final class Main {
             printSfo(iso);
             System.out.println();
             printTree(iso);
+            System.out.println();
+            printPlaylist(iso);
         }
         return 0;
     }
@@ -120,6 +123,34 @@ public final class Main {
         }
     }
 
+    private static void printPlaylist(UmdIsoReader iso) {
+        try {
+            Playlist playlist = Playlist.parse(iso);
+            System.out.println("Playlist (" + playlist.streams().size() + " streams):");
+            for (Playlist.Stream stream : playlist.streams()) {
+                System.out.printf("  %s  %dx%d  %s .. %s  (%d chapters)%n",
+                        stream.name(), stream.width(), stream.height(),
+                        formatTimestamp(stream.firstTimestamp()),
+                        formatTimestamp(stream.lastTimestamp()),
+                        stream.markers().size());
+                for (Playlist.Marker marker : stream.markers()) {
+                    System.out.printf("      %s @ %s%n", marker.name(), formatTimestamp(marker.timestamp()));
+                }
+            }
+        } catch (Exception e) {
+            System.out.println("Playlist: error: " + e.getMessage());
+        }
+    }
+
+    private static String formatTimestamp(long timestamp) {
+        long seconds = timestamp / 90000; // 90 kHz MPEG clock
+        long hundredth = (timestamp - seconds * 90000) * 100 / 90000;
+        long hours = seconds / 3600;
+        long minutes = (seconds % 3600) / 60;
+        long secs = seconds % 60;
+        return String.format("%02d:%02d:%02d.%02d", hours, minutes, secs, hundredth);
+    }
+
     private static byte[] readFile(UmdIsoReader iso, String path) throws IOException {
         if (!iso.hasFile(path)) {
             return null;