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 <limits>
  18 #include <mutex>
  19 #include <movit/effect_chain.h>
  20 #include <movit/resource_pool.h>
  21
  22 #include "context.h"
  23 #include "flags.h"
  24 #include "mainwindow.h"
  25 #include "mixer.h"
  26 #include "qnamespace.h"
  27 #include "ref_counted_gl_sync.h"
  28
  29 class QMouseEvent;
  30 class QWidget;
  31
  32 #undef Success
  33 #include <movit/util.h>
  34 #include <string>
  35
  36 using namespace std;
  37 using namespace std::placeholders;
  38
  39 GLWidget::GLWidget(QWidget *parent)
  40     : QGLWidget(parent, global_share_widget)
  41 {
  42 }
  43
  44 void GLWidget::clean_context()
  45 {
  46         if (resource_pool != nullptr) {
  47                 makeCurrent();
  48                 resource_pool->clean_context();
  49         }
  50 }
  51
  52 void GLWidget::initializeGL()
  53 {
  54         static once_flag flag;
  55         call_once(flag, [this]{
  56                 global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()), global_flags.num_cards);
  57                 global_audio_mixer = global_mixer->get_audio_mixer();
  58                 global_mainwindow->mixer_created(global_mixer);
  59                 global_mixer->start();
  60         });
  61         global_mixer->set_frame_ready_callback(output, [this]{
  62                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  63         });
  64         if (output == Mixer::OUTPUT_LIVE) {
  65                 global_mixer->set_transition_names_updated_callback(output, [this](const vector<string> &names){
  66                         emit transition_names_updated(names);
  67                 });
  68         }
  69         if (output >= Mixer::OUTPUT_INPUT0) {
  70                 global_mixer->set_name_updated_callback(output, [this](const string &name){
  71                         emit name_updated(output, name);
  72                 });
  73                 global_mixer->set_color_updated_callback(output, [this](const string &color){
  74                         emit color_updated(output, color);
  75                 });
  76
  77                 int signal_num = global_mixer->get_channel_signal(output);
  78                 if (signal_num != -1) {
  79                         setContextMenuPolicy(Qt::CustomContextMenu);
  80                         connect(this, &QWidget::customContextMenuRequested,
  81                                 bind(&GLWidget::show_context_menu, this, signal_num, _1));
  82                 }
  83         }
  84
  85         glDisable(GL_BLEND);
  86         glDisable(GL_DEPTH_TEST);
  87         glDepthMask(GL_FALSE);
  88 }
  89
  90 void GLWidget::resizeGL(int width, int height)
  91 {
  92         glViewport(0, 0, width, height);
  93 }
  94
  95 void GLWidget::paintGL()
  96 {
  97         Mixer::DisplayFrame frame;
  98         if (!global_mixer->get_display_frame(output, &frame)) {
  99                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
 100                 check_error();
 101                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 102                 check_error();
 103                 return;
 104         }
 105
 106         check_error();
 107         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
 108         check_error();
 109         frame.setup_chain();
 110         check_error();
 111         frame.chain->render_to_screen();
 112         check_error();
 113
 114         if (resource_pool == nullptr) {
 115                 resource_pool = frame.chain->get_resource_pool();
 116         } else {
 117                 assert(resource_pool == frame.chain->get_resource_pool());
 118         }
 119 }
 120
 121 void GLWidget::mousePressEvent(QMouseEvent *event)
 122 {
 123         emit clicked();
 124 }
 125
 126 void GLWidget::show_context_menu(unsigned signal_num, const QPoint &pos)
 127 {
 128         QPoint global_pos = mapToGlobal(pos);
 129
 130         QMenu menu;
 131
 132         // Add a submenu for selecting input card, with an action for each card.
 133         QMenu card_submenu;
 134         QActionGroup card_group(&card_submenu);
 135
 136         unsigned num_cards = global_mixer->get_num_cards();
 137         unsigned current_card = global_mixer->map_signal(signal_num);
 138         for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 139                 QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 140                 QAction *action = new QAction(description, &card_group);
 141                 action->setCheckable(true);
 142                 if (current_card == card_index) {
 143                         action->setChecked(true);
 144                 }
 145                 action->setData(QList<QVariant>{"card", card_index});
 146                 card_submenu.addAction(action);
 147         }
 148
 149         card_submenu.setTitle("Input source");
 150         menu.addMenu(&card_submenu);
 151
 152         // --- The choices in the next few options depend a lot on which card is active ---
 153
 154         // Add a submenu for selecting video input, with an action for each input.
 155         QMenu video_input_submenu;
 156         QActionGroup video_input_group(&video_input_submenu);
 157         std::map<uint32_t, string> video_inputs = global_mixer->get_available_video_inputs(current_card);
 158         uint32_t current_video_input = global_mixer->get_current_video_input(current_card);
 159         for (const auto &mode : video_inputs) {
 160                 QString description(QString::fromStdString(mode.second));
 161                 QAction *action = new QAction(description, &video_input_group);
 162                 action->setCheckable(true);
 163                 if (mode.first == current_video_input) {
 164                         action->setChecked(true);
 165                 }
 166                 action->setData(QList<QVariant>{"video_input", mode.first});
 167                 video_input_submenu.addAction(action);
 168         }
 169
 170         video_input_submenu.setTitle("Video input");
 171         menu.addMenu(&video_input_submenu);
 172
 173         // The same for audio input.
 174         QMenu audio_input_submenu;
 175         QActionGroup audio_input_group(&audio_input_submenu);
 176         std::map<uint32_t, string> audio_inputs = global_mixer->get_available_audio_inputs(current_card);
 177         uint32_t current_audio_input = global_mixer->get_current_audio_input(current_card);
 178         for (const auto &mode : audio_inputs) {
 179                 QString description(QString::fromStdString(mode.second));
 180                 QAction *action = new QAction(description, &audio_input_group);
 181                 action->setCheckable(true);
 182                 if (mode.first == current_audio_input) {
 183                         action->setChecked(true);
 184                 }
 185                 action->setData(QList<QVariant>{"audio_input", mode.first});
 186                 audio_input_submenu.addAction(action);
 187         }
 188
 189         audio_input_submenu.setTitle("Audio input");
 190         menu.addMenu(&audio_input_submenu);
 191
 192         // The same for resolution.
 193         QMenu mode_submenu;
 194         QActionGroup mode_group(&mode_submenu);
 195         std::map<uint32_t, bmusb::VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
 196         uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
 197         bool has_auto_mode = false;
 198         for (const auto &mode : video_modes) {
 199                 QString description(QString::fromStdString(mode.second.name));
 200                 QAction *action = new QAction(description, &mode_group);
 201                 action->setCheckable(true);
 202                 if (mode.first == current_video_mode) {
 203                         action->setChecked(true);
 204                 }
 205                 action->setData(QList<QVariant>{"video_mode", mode.first});
 206                 mode_submenu.addAction(action);
 207
 208                 // TODO: Relying on the 0 value here (from bmusb.h) is ugly, it should be a named constant.
 209                 if (mode.first == 0) {
 210                         has_auto_mode = true;
 211                 }
 212         }
 213
 214         // Add a “scan” menu if there's no “auto” mode.
 215         if (!has_auto_mode) {
 216                 QAction *action = new QAction("Scan", &mode_group);
 217                 action->setData(QList<QVariant>{"video_mode", 0});
 218                 mode_submenu.addSeparator();
 219                 mode_submenu.addAction(action);
 220         }
 221
 222         mode_submenu.setTitle("Input mode");
 223         menu.addMenu(&mode_submenu);
 224
 225         // --- End of card-dependent choices ---
 226
 227         // Add an audio source selector.
 228         QAction *audio_source_action = nullptr;
 229         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 230                 audio_source_action = new QAction("Use as audio source", &menu);
 231                 audio_source_action->setCheckable(true);
 232                 if (global_audio_mixer->get_simple_input() == signal_num) {
 233                         audio_source_action->setChecked(true);
 234                         audio_source_action->setEnabled(false);
 235                 }
 236                 menu.addAction(audio_source_action);
 237         }
 238
 239         // And a master clock selector.
 240         QAction *master_clock_action = new QAction("Use as master clock", &menu);
 241         master_clock_action->setCheckable(true);
 242         if (global_mixer->get_master_clock() == signal_num) {
 243                 master_clock_action->setChecked(true);
 244                 master_clock_action->setEnabled(false);
 245         }
 246         menu.addAction(master_clock_action);
 247
 248         // Show the menu and look at the result.
 249         QAction *selected_item = menu.exec(global_pos);
 250         if (audio_source_action != nullptr && selected_item == audio_source_action) {
 251                 global_audio_mixer->set_simple_input(signal_num);
 252         } else if (selected_item == master_clock_action) {
 253                 global_mixer->set_master_clock(signal_num);
 254         } else if (selected_item != nullptr) {
 255                 QList<QVariant> selected = selected_item->data().toList();
 256                 if (selected[0].toString() == "video_mode") {
 257                         uint32_t mode = selected[1].toUInt(nullptr);
 258                         if (mode == 0 && !has_auto_mode) {
 259                                 global_mixer->start_mode_scanning(current_card);
 260                         } else {
 261                                 global_mixer->set_video_mode(current_card, mode);
 262                         }
 263                 } else if (selected[0].toString() == "video_input") {
 264                         uint32_t input = selected[1].toUInt(nullptr);
 265                         global_mixer->set_video_input(current_card, input);
 266                 } else if (selected[0].toString() == "audio_input") {
 267                         uint32_t input = selected[1].toUInt(nullptr);
 268                         global_mixer->set_audio_input(current_card, input);
 269                 } else if (selected[0].toString() == "card") {
 270                         unsigned card_index = selected[1].toUInt(nullptr);
 271                         global_mixer->set_signal_mapping(signal_num, card_index);
 272                 } else {
 273                         assert(false);
 274                 }
 275         }
 276 }