From a7b959cdfed6801d27963808f91eca0abb146b7e Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 9 Sep 2016 12:32:52 +0200
Subject: qml_direct: add a test for mpv_opengl_cb_uninit_gl()

That function is awfully corner-caseish, so it's nice to have a good way
to test it.
---
 libmpv/qml_direct/main.cpp | 16 +++++++++++++++-
 libmpv/qml_direct/main.h   |  2 ++
 libmpv/qml_direct/main.qml | 17 +++++++++++++++--
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/libmpv/qml_direct/main.cpp b/libmpv/qml_direct/main.cpp
index 37c6119..7f7e22b 100644
--- a/libmpv/qml_direct/main.cpp
+++ b/libmpv/qml_direct/main.cpp
@@ -51,7 +51,7 @@ void MpvRenderer::paint()
 }
 
 MpvObject::MpvObject(QQuickItem * parent)
-    : QQuickItem(parent), mpv_gl(0), renderer(0)
+    : QQuickItem(parent), mpv_gl(0), renderer(0), killOnce(false)
 {
     mpv = mpv::qt::Handle::FromRawHandle(mpv_create());
     if (!mpv)
@@ -101,6 +101,10 @@ void MpvObject::handleWindowChanged(QQuickWindow *win)
 
 void MpvObject::sync()
 {
+    if (killOnce)
+        cleanup();
+    killOnce = false;
+
     if (!renderer) {
         renderer = new MpvRenderer(mpv, mpv_gl);
         connect(window(), &QQuickWindow::beforeRendering,
@@ -140,6 +144,16 @@ void MpvObject::command(const QVariant& params)
     mpv::qt::command_variant(mpv, params);
 }
 
+void MpvObject::reinitRenderer()
+{
+    // Don't make it stop playback if the VO dies.
+    mpv_set_option_string(mpv, "stop-playback-on-init-failure", "no");
+    // Make it recreate the renderer, which involves calling
+    // mpv_opengl_cb_uninit_gl() (which is the thing we want to test).
+    killOnce = true;
+    window()->update();
+}
+
 int main(int argc, char **argv)
 {
     QGuiApplication app(argc, argv);
diff --git a/libmpv/qml_direct/main.h b/libmpv/qml_direct/main.h
index b0310ff..c872b56 100644
--- a/libmpv/qml_direct/main.h
+++ b/libmpv/qml_direct/main.h
@@ -30,6 +30,7 @@ class MpvObject : public QQuickItem
     mpv::qt::Handle mpv;
     mpv_opengl_cb_context *mpv_gl;
     MpvRenderer *renderer;
+    bool killOnce;
 
 public:
     MpvObject(QQuickItem * parent = 0);
@@ -39,6 +40,7 @@ public slots:
     void sync();
     void swapped();
     void cleanup();
+    void reinitRenderer();
 signals:
     void onUpdate();
 private slots:
diff --git a/libmpv/qml_direct/main.qml b/libmpv/qml_direct/main.qml
index 92be9bc..a8a68d5 100644
--- a/libmpv/qml_direct/main.qml
+++ b/libmpv/qml_direct/main.qml
@@ -18,7 +18,7 @@ Item {
 
     MouseArea {
         anchors.fill: parent
-        onClicked: renderer.command(["loadfile", "../../../test.mkv"])
+        onClicked: renderer.command(["loadfile", "test.mkv"])
     }
 
     Rectangle {
@@ -43,7 +43,20 @@ Item {
             wrapMode: Text.WordWrap
             text: "QtQuick and mpv are both rendering stuff.\n
                    In this example, mpv is always in the background.\n
-                   Click to load ../../../test.mkv"
+                   Click to load test.mkv"
+        }
+
+        Column {
+            Button {
+                anchors.margins: 10
+                text: "Reinit QQuickItem renderer (for testing opengl-cb uninit during playback)"
+                onClicked: renderer.reinitRenderer()
+            }
+            Button {
+                anchors.margins: 10
+                text: "Cycle video"
+                onClicked: renderer.command(["cycle", "video"])
+            }
         }
     }
 }
-- 
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