diff options
Diffstat (limited to 'DOCS/client_api_examples/qml/mpvrenderer.cpp')
-rw-r--r-- | DOCS/client_api_examples/qml/mpvrenderer.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/DOCS/client_api_examples/qml/mpvrenderer.cpp b/DOCS/client_api_examples/qml/mpvrenderer.cpp new file mode 100644 index 0000000000..af62fd2762 --- /dev/null +++ b/DOCS/client_api_examples/qml/mpvrenderer.cpp @@ -0,0 +1,125 @@ +#include "mpvrenderer.h" + +#include <QObject> +#include <QtGlobal> +#include <QOpenGLContext> + +#include <QtGui/QOpenGLFramebufferObject> + +#include <QtQuick/QQuickWindow> +#include <qsgsimpletexturenode.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_opengl_cb_context *mpv_gl; + QQuickWindow *window; +public: + MpvRenderer(mpv_opengl_cb_context *a_mpv_gl) + : mpv_gl(a_mpv_gl), window(NULL) + { + int r = mpv_opengl_cb_init_gl(mpv_gl, NULL, get_proc_address, NULL); + if (r < 0) + throw "could not initialize OpenGL"; + } + + virtual ~MpvRenderer() + { + mpv_opengl_cb_uninit_gl(mpv_gl); + } + + void render() + { + assert(window); // must have been set by synchronize() + + 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(); + } + + QOpenGLFramebufferObject *createFramebufferObject(const QSize &size) + { + QOpenGLFramebufferObjectFormat format; + format.setSamples(4); + return new QOpenGLFramebufferObject(size, format); + } + +protected: + virtual void synchronize(QQuickFramebufferObject *item) + { + window = item->window(); + } +}; + +MpvObject::MpvObject(QQuickItem * parent) + : QQuickFramebufferObject(parent) +{ + mpv = mpv_create(); + if (!mpv) + throw "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) { + mpv_terminate_destroy(mpv); + throw "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"); + + mpv_gl = (mpv_opengl_cb_context *)mpv_get_sub_api(mpv, MPV_SUB_API_OPENGL_CB); + if (!mpv_gl) { + mpv_terminate_destroy(mpv); + throw "OpenGL not compiled in"; + } + + mpv_opengl_cb_set_update_callback(mpv_gl, on_update, (void *)this); + + connect(this, &MpvObject::onUpdate, this, &MpvObject::doUpdate, Qt::QueuedConnection); +} + +MpvObject::~MpvObject() +{ + mpv_terminate_destroy(mpv); +} + +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::loadfile(const QString& filename) +{ + QVariantList cmd; + cmd.append("loadfile"); + cmd.append(filename); + mpv::qt::command_variant(mpv, cmd); +} + +QQuickFramebufferObject::Renderer *MpvObject::createRenderer() const +{ + window()->setPersistentOpenGLContext(true); + window()->setPersistentSceneGraph(true); + return new MpvRenderer(mpv_gl); +} |