新增视频播放mdk内核

video/playmdk/mdk/mdkwidget.cpp

@@ -0,0 +1,55 @@
+#include "mdkwidget.h"
+
+MdkWidget::MdkWidget(QWidget *parent): OpenGLWidget(parent)
+{
+    player = new mdk::Player;
+    player->setRenderCallback([this](void *) {
+        QMetaObject::invokeMethod(this, "update", Qt::QueuedConnection);
+    });
+}
+
+MdkWidget::~MdkWidget()
+{
+    makeCurrent();
+    mdk::Player::foreignGLContextDestroyed();
+    doneCurrent();
+}
+
+void MdkWidget::setUrl(const QString &url)
+{
+    player->setMedia(url.toUtf8().constData());
+}
+
+void MdkWidget::play()
+{
+    player->set(mdk::State::Playing);
+}
+
+void MdkWidget::pause()
+{
+    player->set(mdk::State::Paused);
+}
+
+void MdkWidget::stop()
+{
+    player->set(mdk::State::Stopped);
+}
+
+void MdkWidget::initializeGL()
+{
+
+}
+
+void MdkWidget::resizeGL(int w, int h)
+{
+    float ratio = 1;
+#if (QT_VERSION >= QT_VERSION_CHECK(5,6,0))
+    ratio = devicePixelRatioF();
+#endif
+    player->setVideoSurfaceSize(w * ratio, h * ratio, this);
+}
+
+void MdkWidget::paintGL()
+{
+    player->renderVideo(this);
+}