From 048334c396f5fed17d3b608af0495cdf95c38499 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sun, 8 Mar 2020 19:08:41 +0100
Subject: command: add libass-version property

A bit of a mess with that ifdeffery, but fuck it.
---
 DOCS/man/input.rst |  5 +++++
 player/command.c   | 15 +++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/DOCS/man/input.rst b/DOCS/man/input.rst
index 082776f66d..7c7a6b3d44 100644
--- a/DOCS/man/input.rst
+++ b/DOCS/man/input.rst
@@ -2749,6 +2749,11 @@ Property list
     still named the same.) This property is unavailable if mpv is linked against
     older FFmpeg and Libav versions.
 
+``libass-version``
+    Return the value of ``ass_library_version()``. This is an integer, encoded
+    in a somewhat weird form (apparently "hex BCD"), indicating the release
+    version of the libass library linked to mpv.
+
 ``options/<name>`` (RW)
     Read-only access to value of option ``--<name>``. Most options can be
     changed at runtime by writing to this property. Note that many options
diff --git a/player/command.c b/player/command.c
index ec4b35e137..93fd640d52 100644
--- a/player/command.c
+++ b/player/command.c
@@ -74,6 +74,10 @@
 #include <windows.h>
 #endif
 
+#if HAVE_LIBASS
+#include <ass/ass.h>
+#endif
+
 struct command_ctx {
     // All properties, terminated with a {0} item.
     struct m_property *properties;
@@ -3008,6 +3012,16 @@ static int mp_property_ffmpeg(void *ctx, struct m_property *prop,
     return m_property_strdup_ro(action, arg, av_version_info());
 }
 
+static int mp_property_libass_version(void *ctx, struct m_property *prop,
+                                      int action, void *arg)
+{
+#if HAVE_LIBASS
+    return m_property_int64_ro(action, arg, ass_library_version());
+#else
+    return M_PROPERTY_UNAVAILABLE;
+#endif
+}
+
 static int mp_property_alias(void *ctx, struct m_property *prop,
                              int action, void *arg)
 {
@@ -3449,6 +3463,7 @@ static const struct m_property mp_properties_base[] = {
     {"mpv-version", mp_property_version},
     {"mpv-configuration", mp_property_configuration},
     {"ffmpeg-version", mp_property_ffmpeg},
+    {"libass-version", mp_property_libass_version},
 
     {"options", mp_property_options},
     {"file-local-options", mp_property_local_options},
-- 
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