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 <QAction>
  10 #include <QMenu>
  11 #include <QSurfaceFormat>
  12 #include <movit/resource_pool.h>
  13
  14 #include "glwidget.h"
  15
  16 #include <stdio.h>
  17 #include <functional>
  18 #include <mutex>
  19
  20 #include "context.h"
  21 #include "effect_chain.h"
  22 #include "flags.h"
  23 #include "mainwindow.h"
  24 #include "mixer.h"
  25 #include "qnamespace.h"
  26 #include "ref_counted_gl_sync.h"
  27
  28 class QMouseEvent;
  29 class QWidget;
  30
  31 #undef Success
  32 #include <movit/util.h>
  33 #include <string>
  34
  35 using namespace std;
  36 using namespace std::placeholders;
  37
  38 GLWidget::GLWidget(QWidget *parent)
  39     : QGLWidget(parent, global_share_widget)
  40 {
  41 }
  42
  43 void GLWidget::clean_context()
  44 {
  45         if (resource_pool != nullptr) {
  46                 makeCurrent();
  47                 resource_pool->clean_context();
  48         }
  49 }
  50
  51 void GLWidget::initializeGL()
  52 {
  53         static once_flag flag;
  54         call_once(flag, [this]{
  55                 global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()), global_flags.num_cards);
  56                 global_mainwindow->mixer_created(global_mixer);
  57                 global_mixer->start();
  58         });
  59         global_mixer->set_frame_ready_callback(output, [this]{
  60                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  61                 emit transition_names_updated(global_mixer->get_transition_names());
  62                 emit resolution_updated(output);
  63         });
  64
  65         if (output >= Mixer::OUTPUT_INPUT0) {
  66                 int signal_num = global_mixer->get_channel_signal(output);
  67                 if (signal_num != -1) {
  68                         setContextMenuPolicy(Qt::CustomContextMenu);
  69                         connect(this, &QWidget::customContextMenuRequested,
  70                                 bind(&GLWidget::show_context_menu, this, signal_num, _1));
  71                 }
  72         }
  73
  74         glDisable(GL_BLEND);
  75         glDisable(GL_DEPTH_TEST);
  76         glDepthMask(GL_FALSE);
  77 }
  78
  79 void GLWidget::resizeGL(int width, int height)
  80 {
  81         glViewport(0, 0, width, height);
  82 }
  83
  84 void GLWidget::paintGL()
  85 {
  86         Mixer::DisplayFrame frame;
  87         if (!global_mixer->get_display_frame(output, &frame)) {
  88                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  89                 check_error();
  90                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  91                 check_error();
  92                 return;
  93         }
  94
  95         check_error();
  96         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
  97         check_error();
  98         frame.setup_chain();
  99         check_error();
 100         frame.chain->render_to_screen();
 101         check_error();
 102
 103         if (resource_pool == nullptr) {
 104                 resource_pool = frame.chain->get_resource_pool();
 105         } else {
 106                 assert(resource_pool == frame.chain->get_resource_pool());
 107         }
 108 }
 109
 110 void GLWidget::mousePressEvent(QMouseEvent *event)
 111 {
 112         emit clicked();
 113 }
 114
 115 void GLWidget::show_context_menu(int signal_num, const QPoint &pos)
 116 {
 117         QPoint global_pos = mapToGlobal(pos);
 118
 119         QMenu menu;
 120         QActionGroup group(&menu);
 121
 122         unsigned num_cards = global_mixer->get_num_cards();
 123         unsigned current_card = global_mixer->map_signal(signal_num);
 124         for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 125                 QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 126                 QAction *action = new QAction(description, &group);
 127                 action->setCheckable(true);
 128                 if (current_card == card_index) {
 129                         action->setChecked(true);
 130                 }
 131                 action->setData(card_index);
 132                 menu.addAction(action);
 133         }
 134         QAction *selected_item = menu.exec(global_pos);
 135         if (selected_item) {
 136                 unsigned card_index = selected_item->data().toInt(nullptr);
 137                 global_mixer->set_signal_mapping(signal_num, card_index);
 138         }
 139 }