git.sesse.net Git - nageru/blob - glwidget.cpp

   1 #include <qmetatype.h>  // Needs to come before egl.h.
   2 #include <qdatastream.h>  // Needs to come before egl.h.
   3 #include <qtextstream.h>  // Needs to come before egl.h.
   4 #include <qcursor.h>  // Needs to come before egl.h.
   5 #include <qcoreevent.h>  // Needs to come before egl.h.
   6 #include <qevent.h>  // Needs to come before egl.h.
   7 #include <epoxy/gl.h>
   8 #include <epoxy/egl.h>
   9 #include <QSurfaceFormat>
  10
  11 #include "glwidget.h"
  12 #include "mainwindow.h"
  13
  14 #include <movit/resource_pool.h>
  15 #include <stdio.h>
  16 #include <mutex>
  17
  18 #include "context.h"
  19 #include "mixer.h"
  20 #include "ref_counted_gl_sync.h"
  21 #include "vumeter.h"
  22
  23 class MainWindow;
  24 class QSurface;
  25 class QWidget;
  26
  27 #undef Success
  28 #include <movit/util.h>
  29 #include <string>
  30
  31 using namespace std;
  32
  33 GLWidget::GLWidget(QWidget *parent)
  34     : QGLWidget(parent, global_share_widget),
  35       resource_pool(new movit::ResourcePool)
  36 {
  37 }
  38
  39 GLWidget::~GLWidget()
  40 {
  41 }
  42
  43 void GLWidget::initializeGL()
  44 {
  45         printf("egl context=%p\n", eglGetCurrentContext());
  46         //printf("threads: %p %p\n", QThread::currentThread(), qGuiApp->thread());
  47
  48         static std::once_flag flag;
  49         std::call_once(flag, [this]{
  50                 global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()));
  51                 global_mixer->set_audio_level_callback([this](float level_lufs, float peak_db){
  52                         global_vu_meter->set_level(level_lufs);
  53
  54                         char buf[256];
  55                         snprintf(buf, sizeof(buf), "%.1f", peak_db);
  56                         global_peak_display->setText(buf);
  57                 });
  58                 global_mixer->start();
  59         });
  60         global_mixer->set_frame_ready_callback(output, [this]{
  61                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  62                 emit transition_names_updated(global_mixer->get_transition_names());
  63         });
  64
  65         glDisable(GL_BLEND);
  66         glDisable(GL_DEPTH_TEST);
  67         glDepthMask(GL_FALSE);
  68 }
  69
  70 void GLWidget::resizeGL(int width, int height)
  71 {
  72         glViewport(0, 0, width, height);
  73 }
  74
  75 void GLWidget::paintGL()
  76 {
  77         Mixer::DisplayFrame frame;
  78         if (!global_mixer->get_display_frame(output, &frame)) {
  79                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  80                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  81                 return;
  82         }
  83
  84         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
  85         frame.setup_chain();
  86         frame.chain->render_to_screen();
  87         check_error();
  88 }
  89
  90 void GLWidget::mousePressEvent(QMouseEvent *event)
  91 {
  92         emit clicked();
  93 }