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
  13 #include "glwidget.h"
  14
  15 #include <stdio.h>
  16 #include <functional>
  17 #include <mutex>
  18 #include <movit/effect_chain.h>
  19 #include <movit/resource_pool.h>
  20
  21 #include "context.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                 emit color_updated(output);
  64         });
  65
  66         if (output >= Mixer::OUTPUT_INPUT0) {
  67                 int signal_num = global_mixer->get_channel_signal(output);
  68                 if (signal_num != -1) {
  69                         setContextMenuPolicy(Qt::CustomContextMenu);
  70                         connect(this, &QWidget::customContextMenuRequested,
  71                                 bind(&GLWidget::show_context_menu, this, signal_num, _1));
  72                 }
  73         }
  74
  75         glDisable(GL_BLEND);
  76         glDisable(GL_DEPTH_TEST);
  77         glDepthMask(GL_FALSE);
  78 }
  79
  80 void GLWidget::resizeGL(int width, int height)
  81 {
  82         glViewport(0, 0, width, height);
  83 }
  84
  85 void GLWidget::paintGL()
  86 {
  87         Mixer::DisplayFrame frame;
  88         if (!global_mixer->get_display_frame(output, &frame)) {
  89                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  90                 check_error();
  91                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  92                 check_error();
  93                 return;
  94         }
  95
  96         check_error();
  97         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
  98         check_error();
  99         frame.setup_chain();
 100         check_error();
 101         frame.chain->render_to_screen();
 102         check_error();
 103
 104         if (resource_pool == nullptr) {
 105                 resource_pool = frame.chain->get_resource_pool();
 106         } else {
 107                 assert(resource_pool == frame.chain->get_resource_pool());
 108         }
 109 }
 110
 111 void GLWidget::mousePressEvent(QMouseEvent *event)
 112 {
 113         emit clicked();
 114 }
 115
 116 void GLWidget::show_context_menu(unsigned signal_num, const QPoint &pos)
 117 {
 118         QPoint global_pos = mapToGlobal(pos);
 119
 120         QMenu menu;
 121
 122         // Add a submenu for selecting input card, with an action for each card.
 123         QMenu card_submenu;
 124         QActionGroup card_group(&card_submenu);
 125
 126         unsigned num_cards = global_mixer->get_num_cards();
 127         unsigned current_card = global_mixer->map_signal(signal_num);
 128         for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 129                 QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 130                 QAction *action = new QAction(description, &card_group);
 131                 action->setCheckable(true);
 132                 if (current_card == card_index) {
 133                         action->setChecked(true);
 134                 }
 135                 action->setData(QList<QVariant>{"card", card_index});
 136                 card_submenu.addAction(action);
 137         }
 138
 139         card_submenu.setTitle("Input source");
 140         menu.addMenu(&card_submenu);
 141
 142         // --- The choices in the next few options depend a lot on which card is active ---
 143
 144         // Add a submenu for selecting video input, with an action for each input.
 145         QMenu video_input_submenu;
 146         QActionGroup video_input_group(&video_input_submenu);
 147         std::map<uint32_t, string> video_inputs = global_mixer->get_available_video_inputs(current_card);
 148         uint32_t current_video_input = global_mixer->get_current_video_input(current_card);
 149         for (const auto &mode : video_inputs) {
 150                 QString description(QString::fromStdString(mode.second));
 151                 QAction *action = new QAction(description, &video_input_group);
 152                 action->setCheckable(true);
 153                 if (mode.first == current_video_input) {
 154                         action->setChecked(true);
 155                 }
 156                 action->setData(QList<QVariant>{"video_input", mode.first});
 157                 video_input_submenu.addAction(action);
 158         }
 159
 160         video_input_submenu.setTitle("Video input");
 161         menu.addMenu(&video_input_submenu);
 162
 163         // The same for audio input.
 164         QMenu audio_input_submenu;
 165         QActionGroup audio_input_group(&audio_input_submenu);
 166         std::map<uint32_t, string> audio_inputs = global_mixer->get_available_audio_inputs(current_card);
 167         uint32_t current_audio_input = global_mixer->get_current_audio_input(current_card);
 168         for (const auto &mode : audio_inputs) {
 169                 QString description(QString::fromStdString(mode.second));
 170                 QAction *action = new QAction(description, &audio_input_group);
 171                 action->setCheckable(true);
 172                 if (mode.first == current_audio_input) {
 173                         action->setChecked(true);
 174                 }
 175                 action->setData(QList<QVariant>{"audio_input", mode.first});
 176                 audio_input_submenu.addAction(action);
 177         }
 178
 179         audio_input_submenu.setTitle("Audio input");
 180         menu.addMenu(&audio_input_submenu);
 181
 182         // The same for resolution.
 183         QMenu mode_submenu;
 184         QActionGroup mode_group(&mode_submenu);
 185         std::map<uint32_t, VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
 186         uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
 187         bool has_auto_mode = false;
 188         for (const auto &mode : video_modes) {
 189                 QString description(QString::fromStdString(mode.second.name));
 190                 QAction *action = new QAction(description, &mode_group);
 191                 action->setCheckable(true);
 192                 if (mode.first == current_video_mode) {
 193                         action->setChecked(true);
 194                 }
 195                 action->setData(QList<QVariant>{"video_mode", mode.first});
 196                 mode_submenu.addAction(action);
 197
 198                 // TODO: Relying on the 0 value here (from bmusb.h) is ugly, it should be a named constant.
 199                 if (mode.first == 0) {
 200                         has_auto_mode = true;
 201                 }
 202         }
 203
 204         // Add a “scan” menu if there's no “auto” mode.
 205         if (!has_auto_mode) {
 206                 QAction *action = new QAction("Scan", &mode_group);
 207                 action->setData(QList<QVariant>{"video_mode", 0});
 208                 mode_submenu.addSeparator();
 209                 mode_submenu.addAction(action);
 210         }
 211
 212         mode_submenu.setTitle("Input mode");
 213         menu.addMenu(&mode_submenu);
 214
 215         // --- End of card-dependent choices ---
 216
 217         // Add an audio source selector.
 218         QAction *audio_source_action = new QAction("Use as audio source", &menu);
 219         audio_source_action->setCheckable(true);
 220         if (global_mixer->get_audio_source() == signal_num) {
 221                 audio_source_action->setChecked(true);
 222                 audio_source_action->setEnabled(false);
 223         }
 224         menu.addAction(audio_source_action);
 225
 226         // And a master clock selector.
 227         QAction *master_clock_action = new QAction("Use as master clock", &menu);
 228         master_clock_action->setCheckable(true);
 229         if (global_mixer->get_master_clock() == signal_num) {
 230                 master_clock_action->setChecked(true);
 231                 master_clock_action->setEnabled(false);
 232         }
 233         menu.addAction(master_clock_action);
 234
 235         // Show the menu and look at the result.
 236         QAction *selected_item = menu.exec(global_pos);
 237         if (selected_item == audio_source_action) {
 238                 global_mixer->set_audio_source(signal_num);
 239         } else if (selected_item == master_clock_action) {
 240                 global_mixer->set_master_clock(signal_num);
 241         } else if (selected_item != nullptr) {
 242                 QList<QVariant> selected = selected_item->data().toList();
 243                 if (selected[0].toString() == "video_mode") {
 244                         uint32_t mode = selected[1].toUInt(nullptr);
 245                         if (mode == 0 && !has_auto_mode) {
 246                                 global_mixer->start_mode_scanning(current_card);
 247                         } else {
 248                                 global_mixer->set_video_mode(current_card, mode);
 249                         }
 250                 } else if (selected[0].toString() == "video_input") {
 251                         uint32_t input = selected[1].toUInt(nullptr);
 252                         global_mixer->set_video_input(current_card, input);
 253                 } else if (selected[0].toString() == "audio_input") {
 254                         uint32_t input = selected[1].toUInt(nullptr);
 255                         global_mixer->set_audio_input(current_card, input);
 256                 } else if (selected[0].toString() == "card") {
 257                         unsigned card_index = selected[1].toUInt(nullptr);
 258                         global_mixer->set_signal_mapping(signal_num, card_index);
 259                 } else {
 260                         assert(false);
 261                 }
 262         }
 263 }