fix(video): vsync remote canvas draws

.gitignore

@@ -12,6 +12,11 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 dev-debug.log
+
+# Debug frame dump artifacts
+android-frame-dumps/
+wzp-frame-dumps.tar
+
 # Dependency directories
 node_modules/
 # Environment variables

desktop/src/main.ts

@@ -739,6 +739,10 @@ let remoteFrameSerial = 0;
 let remoteDrawInFlight = false;
 let remotePendingFrame: { serial: number; width: number; height: number; jpeg_b64: string } | null = null;
 
+function nextAnimationFrame() {
+  return new Promise<void>(resolve => requestAnimationFrame(() => resolve()));
+}
+
 async function drawRemoteFrame(frame: { serial: number; width: number; height: number; jpeg_b64: string }) {
   const img = new Image();
   img.src = `data:image/jpeg;base64,${frame.jpeg_b64}`;
@@ -751,6 +755,8 @@ async function drawRemoteFrame(frame: { serial: number; width: number; height: n
     });
   }
 
+  if (frame.serial !== remoteFrameSerial) return;
+  await nextAnimationFrame();
   if (frame.serial !== remoteFrameSerial) return;
   if (vdRemoteVideo.width !== frame.width) vdRemoteVideo.width = frame.width;
   if (vdRemoteVideo.height !== frame.height) vdRemoteVideo.height = frame.height;

scripts/pull-android-frame-dumps.sh

@@ -3,9 +3,9 @@ set -euo pipefail
 
 PACKAGE="${1:-com.wzp.desktop}"
 OUT_DIR="${2:-android-frame-dumps}"
-REMOTE_TAR="/sdcard/wzp-frame-dumps.tar"
 LOCAL_TAR="wzp-frame-dumps.tar"
-APP_DUMP_DIR="files/com.wzp.desktop/.wzp"
+APP_DUMP_DIR="${WZP_ANDROID_DUMP_ROOT:-.wzp}"
+trap 'rm -f "$LOCAL_TAR"' EXIT
 
 if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
     echo "Usage: $0 [package] [out-dir]"
@@ -15,11 +15,7 @@ if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
 fi
 
 echo ">>> Packaging frame dumps from $PACKAGE..."
-adb shell "run-as $PACKAGE tar -C $APP_DUMP_DIR -cf $REMOTE_TAR frame-dumps"
-
-echo ">>> Pulling $REMOTE_TAR..."
-adb pull "$REMOTE_TAR" "$LOCAL_TAR"
-adb shell "rm -f $REMOTE_TAR" >/dev/null 2>&1 || true
+adb exec-out "run-as $PACKAGE tar -C $APP_DUMP_DIR -cf - frame-dumps" > "$LOCAL_TAR"
 
 rm -rf "$OUT_DIR"
 mkdir -p "$OUT_DIR"