Podlite 1.12: a build for Android 4.1 (Xperia J) with ExoPlayer, speed and skip silences

- One build per Android level, as in Tenda and Plexamp Lite: build/Podlite.apk (Android 2.2+, versionCode 1308) and
  build/Podlite-api16.apk (Android 4.1+, 1316), from shared src/ plus platform/api8 or platform/api16; build.sh now
  runs on the local toolchain (aapt2, dx or R8, signapk.py; the JKS key converted for the run).
- Android 4.1 build: ExoPlayer 2.18.7 behind an Engine interface, with playback speed (player header) and skipping
  silences (Settings), a 3-minute buffer and MediaPlayer as fallback for audio it can't decode; a notification and
  lock screen with the cover and buttons; Holo; a menu button on phones without a Menu key; metered networks for
  "download on Wi-Fi only".
- Both builds: tlskit's Http.abort fix (a finished response's pooled connection is no longer closed under a later
  request); the lock screen's and newer headsets' play/pause keys.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/scan_dalvik.py

@@ -0,0 +1,46 @@
+# Find invokeinterface calls to java.lang.Object methods (toString/equals/hashCode/getClass) through an
+# interface that doesn't declare them itself: Dalvik before 4.0 can't resolve those (NoSuchMethodError).
+import os, re, subprocess, sys, zipfile
+classes = sys.argv[1]; android_jar = sys.argv[2]
+OBJ = {"toString:()Ljava/lang/String;", "equals:(Ljava/lang/Object;)Z", "hashCode:()I", "getClass:()Ljava/lang/Class;"}
+z = zipfile.ZipFile(android_jar)
+declared = {}
+def declares(iface, m):
+    key = (iface, m)
+    if key in declared: return declared[key]
+    path = os.path.join(classes, iface + ".class")
+    src = path if os.path.exists(path) else None
+    args = ["javap", "-p", "-s", "-cp", classes if src else android_jar, iface.replace("/", ".")]
+    out = subprocess.run(args, capture_output=True, text=True).stdout
+    name, desc = m.split(":")
+    found = False
+    lines = out.splitlines()
+    for i, l in enumerate(lines):
+        if re.search(r"\b" + name + r"\(", l) and i + 1 < len(lines) and desc in lines[i + 1]:
+            found = True
+    # superinterfaces declaring it also count
+    if not found:
+        mm = re.search(r"interface \S+ extends (.+?) \{", out)
+        if mm:
+            for sup in mm.group(1).split(","):
+                sup = sup.strip().split("<")[0].replace(".", "/")
+                if sup and declares(sup, m): found = True
+    declared[key] = found
+    return found
+hits = {}
+files = [os.path.join(dp, f) for dp, _, fs in os.walk(classes) for f in fs if f.endswith(".class")]
+for i in range(0, len(files), 200):
+    out = subprocess.run(["javap", "-c", "-p"] + files[i:i+200], capture_output=True, text=True).stdout
+    cur = None
+    for line in out.splitlines():
+        m = re.match(r"^(?:public |final |abstract |class |interface )*.*?(?:class|interface) (\S+)", line)
+        if m and not line.startswith(" "): cur = m.group(1)
+        mi = re.search(r"invokeinterface\s+#\d+,\s*\d+\s*// InterfaceMethod (\S+)\.(\w+):(\S+)", line)
+        if mi:
+            iface, name, desc = mi.group(1), mi.group(2), mi.group(3)
+            sig = name + ":" + desc
+            if sig in OBJ and not declares(iface, sig):
+                hits.setdefault((iface, sig), set()).add(cur)
+for (iface, sig), users in sorted(hits.items()):
+    print(f"{iface}.{sig}  <- {len(users)} class(es): " + ", ".join(sorted(users))[:300])
+print("total patterns:", len(hits))