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🎥 Command line media player
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4.0 kB · 137 lines
C++
at release/0.8
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138#include "main.h"
#include <stdexcept>#include <clocale>
#include <QObject>#include <QtGlobal>#include <QOpenGLContext>#include <QGuiApplication>
#include <QtGui/QOpenGLFramebufferObject>
#include <QtQuick/QQuickWindow>#include <QtQuick/QQuickView>
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 threadvoid 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){ QGuiApplication app(argc, argv);
// Qt sets the locale in the QGuiApplication constructor, but libmpv // requires the LC_NUMERIC category to be set to "C", so change it back. std::setlocale(LC_NUMERIC, "C");
qmlRegisterType<MpvObject>("mpvtest", 1, 0, "MpvObject");
QQuickView view; view.setResizeMode(QQuickView::SizeRootObjectToView); view.setSource(QUrl("qrc:///mpvtest/main.qml")); view.show();
return app.exec();}