identify-disc support for bluray

[transcoding] / identify-disc-mpv

diff --git a/identify-disc-mpv b/identify-disc-mpv
new file mode 100755 (executable)
index 0000000..440e249
--- /dev/null
+++ b/identify-disc-mpv
@@ -0,0 +1,53 @@
+#!/bin/bash -e
+
+if [ -z "$1" -o -z "$2" ]; then
+    echo "Usage: $0 --bluray-device|--dvd-device SOMEDIRECTORY"
+    exit 1
+fi
+
+device_param="$1"
+device_path="$2"
+if [ "$device_param" = "--bluray-device" ]; then
+    device_scheme="bd"
+elif [ "$device_param" = "--dvd-device" ]; then
+    device_scheme="dvd"
+else
+    echo "Unknown device type: $device_param"
+    exit 1
+fi
+
+function mpv_wrap {
+    mpv 2> /dev/null \
+        --quiet \
+        --ao=null \
+        --vo=null \
+        --frames 1 \
+        --no-cache \
+        --no-config \
+        "$@"
+}
+
+function get_highest_title {
+    mpv_wrap \
+        "$device_param" "$device_path" "${device_scheme}://" \
+        --term-playing-msg='${disc-title-list}TITLE_LIST_END' \
+    | grep -B2 'TITLE_LIST_END' \
+    | head -n1 \
+    | cut -d':' -f1
+}
+
+function get_length {
+    mpv_wrap \
+        "$device_param" "$device_path" "${device_scheme}://${1}" \
+        --term-playing-msg='TITLE_LENGTH=${length}' \
+    | grep 'TITLE_LENGTH' \
+    | head -n1 \
+    | cut -d'=' -f2
+}
+
+highest_title="$(get_highest_title)"
+for title in $(seq 0 "$highest_title"); do
+    echo -n "$title "
+    get_length "$title"
+done
+