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