1 files changed, 114 insertions, 1 deletions
diff --git a/DOCS/client_api_examples/qml/main.cpp b/DOCS/client_api_examples/qml/main.cpp
index cc86302be6..2794d87c1a 100644
--- a/DOCS/client_api_examples/qml/main.cpp
+++ b/DOCS/client_api_examples/qml/main.cpp
@@ -1,8 +1,121 @@
+#include "main.h"
+
+#include <stdexcept>
+
+#include <QObject>
+#include <QtGlobal>
+#include <QOpenGLContext>
 #include <QGuiApplication>
 
+#include <QtGui/QOpenGLFramebufferObject>
+
+#include <QtQuick/QQuickWindow>
 #include <QtQuick/QQuickView>
 
-#include "mpvrenderer.h"
+class MpvRenderer : public QQuickFramebufferObject::Renderer
+{
+    static void *get_proc_address(void *ctx, const char *name) {
+        (void)ctx;
+        QOpenGLContext *glctx = QOpenGLContext::currentContext();
+        if (!glctx)
+            return NULL;
+        return (void *)glctx->getProcAddress(QByteArray(name));
+    }
+
+    mpv::qt::Handle mpv;
+    QQuickWindow *window;
+    mpv_opengl_cb_context *mpv_gl;
+public:
+    MpvRenderer(const MpvObject *obj)
+        : mpv(obj->mpv), window(obj->window()), mpv_gl(obj->mpv_gl)
+    {
+        int r = mpv_opengl_cb_init_gl(mpv_gl, NULL, get_proc_address, NULL);
+        if (r < 0)
+            throw std::runtime_error("could not initialize OpenGL");
+    }
+
+    virtual ~MpvRenderer()
+    {
+        // Until this call is done, we need to make sure the player remains
+        // alive. This is done implicitly with the mpv::qt::Handle instance
+        // in this class.
+        mpv_opengl_cb_uninit_gl(mpv_gl);
+    }
+
+    void render()
+    {
+        QOpenGLFramebufferObject *fbo = framebufferObject();
+        int vp[4] = {0, 0, fbo->width(), fbo->height()};
+        window->resetOpenGLState();
+        mpv_opengl_cb_render(mpv_gl, fbo->handle(), vp);
+        window->resetOpenGLState();
+    }
+};
+
+MpvObject::MpvObject(QQuickItem * parent)
+    : QQuickFramebufferObject(parent), mpv_gl(0)
+{
+    mpv = mpv::qt::Handle::FromRawHandle(mpv_create());
+    if (!mpv)
+        throw std::runtime_error("could not create mpv context");
+
+    mpv_set_option_string(mpv, "terminal", "yes");
+    mpv_set_option_string(mpv, "msg-level", "all=v");
+
+    if (mpv_initialize(mpv) < 0)
+        throw std::runtime_error("could not initialize mpv context");
+
+    // Make use of the MPV_SUB_API_OPENGL_CB API.
+    mpv::qt::set_option_variant(mpv, "vo", "opengl-cb");
+
+    // Request hw decoding, just for testing.
+    mpv::qt::set_option_variant(mpv, "hwdec", "auto");
+
+    // Setup the callback that will make QtQuick update and redraw if there
+    // is a new video frame. Use a queued connection: this makes sure the
+    // doUpdate() function is run on the GUI thread.
+    mpv_gl = (mpv_opengl_cb_context *)mpv_get_sub_api(mpv, MPV_SUB_API_OPENGL_CB);
+    if (!mpv_gl)
+        throw std::runtime_error("OpenGL not compiled in");
+    mpv_opengl_cb_set_update_callback(mpv_gl, MpvObject::on_update, (void *)this);
+    connect(this, &MpvObject::onUpdate, this, &MpvObject::doUpdate,
+            Qt::QueuedConnection);
+}
+
+MpvObject::~MpvObject()
+{
+    if (mpv_gl)
+        mpv_opengl_cb_set_update_callback(mpv_gl, NULL, NULL);
+}
+
+void MpvObject::on_update(void *ctx)
+{
+    MpvObject *self = (MpvObject *)ctx;
+    emit self->onUpdate();
+}
+
+// connected to onUpdate(); signal makes sure it runs on the GUI thread
+void MpvObject::doUpdate()
+{
+    update();
+}
+
+void MpvObject::command(const QVariant& params)
+{
+    mpv::qt::command_variant(mpv, params);
+}
+
+void MpvObject::setProperty(const QString& name, const QVariant& value)
+{
+    mpv::qt::set_property_variant(mpv, name, value);
+}
+
+QQuickFramebufferObject::Renderer *MpvObject::createRenderer() const
+{
+    window()->setPersistentOpenGLContext(true);
+    window()->setPersistentSceneGraph(true);
+    return new MpvRenderer(this);
+}
 
 int main(int argc, char **argv)
 {