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_audio_mixer = global_mixer->get_audio_mixer();
  57                 global_mainwindow->mixer_created(global_mixer);
  58                 global_mixer->start();
  59         });
  60         global_mixer->set_frame_ready_callback(output, [this]{
  61                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  62         });
  63         if (output == Mixer::OUTPUT_LIVE) {
  64                 global_mixer->set_transition_names_updated_callback(output, [this](const vector<string> &names){
  65                         emit transition_names_updated(names);
  66                 });
  67         }
  68         if (output >= Mixer::OUTPUT_INPUT0) {
  69                 global_mixer->set_name_updated_callback(output, [this](const string &name){
  70                         emit name_updated(output, name);
  71                 });
  72                 global_mixer->set_color_updated_callback(output, [this](const string &color){
  73                         emit color_updated(output, color);
  74                 });
  75
  76                 int signal_num = global_mixer->get_channel_signal(output);
  77                 if (signal_num != -1) {
  78                         setContextMenuPolicy(Qt::CustomContextMenu);
  79                         connect(this, &QWidget::customContextMenuRequested,
  80                                 bind(&GLWidget::show_context_menu, this, signal_num, _1));
  81                 }
  82         }
  83
  84         glDisable(GL_BLEND);
  85         glDisable(GL_DEPTH_TEST);
  86         glDepthMask(GL_FALSE);
  87 }
  88
  89 void GLWidget::resizeGL(int width, int height)
  90 {
  91         glViewport(0, 0, width, height);
  92 }
  93
  94 void GLWidget::paintGL()
  95 {
  96         Mixer::DisplayFrame frame;
  97         if (!global_mixer->get_display_frame(output, &frame)) {
  98                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  99                 check_error();
 100                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 101                 check_error();
 102                 return;
 103         }
 104
 105         check_error();
 106         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
 107         check_error();
 108         frame.setup_chain();
 109         check_error();
 110         frame.chain->render_to_screen();
 111         check_error();
 112
 113         if (resource_pool == nullptr) {
 114                 resource_pool = frame.chain->get_resource_pool();
 115         } else {
 116                 assert(resource_pool == frame.chain->get_resource_pool());
 117         }
 118 }
 119
 120 void GLWidget::mousePressEvent(QMouseEvent *event)
 121 {
 122         emit clicked();
 123 }
 124
 125 void GLWidget::show_context_menu(unsigned signal_num, const QPoint &pos)
 126 {
 127         QPoint global_pos = mapToGlobal(pos);
 128
 129         QMenu menu;
 130
 131         // Add a submenu for selecting input card, with an action for each card.
 132         QMenu card_submenu;
 133         QActionGroup card_group(&card_submenu);
 134
 135         unsigned num_cards = global_mixer->get_num_cards();
 136         unsigned current_card = global_mixer->map_signal(signal_num);
 137         for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 138                 QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 139                 QAction *action = new QAction(description, &card_group);
 140                 action->setCheckable(true);
 141                 if (current_card == card_index) {
 142                         action->setChecked(true);
 143                 }
 144                 action->setData(QList<QVariant>{"card", card_index});
 145                 card_submenu.addAction(action);
 146         }
 147
 148         card_submenu.setTitle("Input source");
 149         menu.addMenu(&card_submenu);
 150
 151         // --- The choices in the next few options depend a lot on which card is active ---
 152
 153         // Add a submenu for selecting video input, with an action for each input.
 154         QMenu video_input_submenu;
 155         QActionGroup video_input_group(&video_input_submenu);
 156         std::map<uint32_t, string> video_inputs = global_mixer->get_available_video_inputs(current_card);
 157         uint32_t current_video_input = global_mixer->get_current_video_input(current_card);
 158         for (const auto &mode : video_inputs) {
 159                 QString description(QString::fromStdString(mode.second));
 160                 QAction *action = new QAction(description, &video_input_group);
 161                 action->setCheckable(true);
 162                 if (mode.first == current_video_input) {
 163                         action->setChecked(true);
 164                 }
 165                 action->setData(QList<QVariant>{"video_input", mode.first});
 166                 video_input_submenu.addAction(action);
 167         }
 168
 169         video_input_submenu.setTitle("Video input");
 170         menu.addMenu(&video_input_submenu);
 171
 172         // The same for audio input.
 173         QMenu audio_input_submenu;
 174         QActionGroup audio_input_group(&audio_input_submenu);
 175         std::map<uint32_t, string> audio_inputs = global_mixer->get_available_audio_inputs(current_card);
 176         uint32_t current_audio_input = global_mixer->get_current_audio_input(current_card);
 177         for (const auto &mode : audio_inputs) {
 178                 QString description(QString::fromStdString(mode.second));
 179                 QAction *action = new QAction(description, &audio_input_group);
 180                 action->setCheckable(true);
 181                 if (mode.first == current_audio_input) {
 182                         action->setChecked(true);
 183                 }
 184                 action->setData(QList<QVariant>{"audio_input", mode.first});
 185                 audio_input_submenu.addAction(action);
 186         }
 187
 188         audio_input_submenu.setTitle("Audio input");
 189         menu.addMenu(&audio_input_submenu);
 190
 191         // The same for resolution.
 192         QMenu mode_submenu;
 193         QActionGroup mode_group(&mode_submenu);
 194         std::map<uint32_t, bmusb::VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
 195         uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
 196         bool has_auto_mode = false;
 197         for (const auto &mode : video_modes) {
 198                 QString description(QString::fromStdString(mode.second.name));
 199                 QAction *action = new QAction(description, &mode_group);
 200                 action->setCheckable(true);
 201                 if (mode.first == current_video_mode) {
 202                         action->setChecked(true);
 203                 }
 204                 action->setData(QList<QVariant>{"video_mode", mode.first});
 205                 mode_submenu.addAction(action);
 206
 207                 // TODO: Relying on the 0 value here (from bmusb.h) is ugly, it should be a named constant.
 208                 if (mode.first == 0) {
 209                         has_auto_mode = true;
 210                 }
 211         }
 212
 213         // Add a “scan” menu if there's no “auto” mode.
 214         if (!has_auto_mode) {
 215                 QAction *action = new QAction("Scan", &mode_group);
 216                 action->setData(QList<QVariant>{"video_mode", 0});
 217                 mode_submenu.addSeparator();
 218                 mode_submenu.addAction(action);
 219         }
 220
 221         mode_submenu.setTitle("Input mode");
 222         menu.addMenu(&mode_submenu);
 223
 224         // --- End of card-dependent choices ---
 225
 226         // Add an audio source selector.
 227         QAction *audio_source_action = new QAction("Use as audio source", &menu);
 228         audio_source_action->setCheckable(true);
 229         if (global_mixer->get_audio_source() == signal_num) {
 230                 audio_source_action->setChecked(true);
 231                 audio_source_action->setEnabled(false);
 232         }
 233         menu.addAction(audio_source_action);
 234
 235         // And a master clock selector.
 236         QAction *master_clock_action = new QAction("Use as master clock", &menu);
 237         master_clock_action->setCheckable(true);
 238         if (global_mixer->get_master_clock() == signal_num) {
 239                 master_clock_action->setChecked(true);
 240                 master_clock_action->setEnabled(false);
 241         }
 242         menu.addAction(master_clock_action);
 243
 244         // Show the menu and look at the result.
 245         QAction *selected_item = menu.exec(global_pos);
 246         if (selected_item == audio_source_action) {
 247                 global_mixer->set_audio_source(signal_num);
 248         } else if (selected_item == master_clock_action) {
 249                 global_mixer->set_master_clock(signal_num);
 250         } else if (selected_item != nullptr) {
 251                 QList<QVariant> selected = selected_item->data().toList();
 252                 if (selected[0].toString() == "video_mode") {
 253                         uint32_t mode = selected[1].toUInt(nullptr);
 254                         if (mode == 0 && !has_auto_mode) {
 255                                 global_mixer->start_mode_scanning(current_card);
 256                         } else {
 257                                 global_mixer->set_video_mode(current_card, mode);
 258                         }
 259                 } else if (selected[0].toString() == "video_input") {
 260                         uint32_t input = selected[1].toUInt(nullptr);
 261                         global_mixer->set_video_input(current_card, input);
 262                 } else if (selected[0].toString() == "audio_input") {
 263                         uint32_t input = selected[1].toUInt(nullptr);
 264                         global_mixer->set_audio_input(current_card, input);
 265                 } else if (selected[0].toString() == "card") {
 266                         unsigned card_index = selected[1].toUInt(nullptr);
 267                         global_mixer->set_signal_mapping(signal_num, card_index);
 268                 } else {
 269                         assert(false);
 270                 }
 271         }
 272 }