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         });
  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(unsigned signal_num, const QPoint &pos)
 116 {
 117         QPoint global_pos = mapToGlobal(pos);
 118
 119         QMenu menu;
 120
 121         // Add a submenu for selecting input card, with an action for each card.
 122         QMenu card_submenu;
 123         QActionGroup card_group(&card_submenu);
 124
 125         unsigned num_cards = global_mixer->get_num_cards();
 126         unsigned current_card = global_mixer->map_signal(signal_num);
 127         for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 128                 QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 129                 QAction *action = new QAction(description, &card_group);
 130                 action->setCheckable(true);
 131                 if (current_card == card_index) {
 132                         action->setChecked(true);
 133                 }
 134                 action->setData(QList<QVariant>{"card", card_index});
 135                 card_submenu.addAction(action);
 136         }
 137
 138         card_submenu.setTitle("Input source");
 139         menu.addMenu(&card_submenu);
 140
 141         // --- The choices in the next few options depend a lot on which card is active ---
 142
 143         // Add a submenu for selecting video input, with an action for each input.
 144         QMenu video_input_submenu;
 145         QActionGroup video_input_group(&video_input_submenu);
 146         std::map<uint32_t, string> video_inputs = global_mixer->get_available_video_inputs(current_card);
 147         uint32_t current_video_input = global_mixer->get_current_video_input(current_card);
 148         for (const auto &mode : video_inputs) {
 149                 QString description(QString::fromStdString(mode.second));
 150                 QAction *action = new QAction(description, &video_input_group);
 151                 action->setCheckable(true);
 152                 if (mode.first == current_video_input) {
 153                         action->setChecked(true);
 154                 }
 155                 action->setData(QList<QVariant>{"video_input", mode.first});
 156                 video_input_submenu.addAction(action);
 157         }
 158
 159         video_input_submenu.setTitle("Video input");
 160         menu.addMenu(&video_input_submenu);
 161
 162         // The same for audio input.
 163         QMenu audio_input_submenu;
 164         QActionGroup audio_input_group(&audio_input_submenu);
 165         std::map<uint32_t, string> audio_inputs = global_mixer->get_available_audio_inputs(current_card);
 166         uint32_t current_audio_input = global_mixer->get_current_audio_input(current_card);
 167         for (const auto &mode : audio_inputs) {
 168                 QString description(QString::fromStdString(mode.second));
 169                 QAction *action = new QAction(description, &audio_input_group);
 170                 action->setCheckable(true);
 171                 if (mode.first == current_audio_input) {
 172                         action->setChecked(true);
 173                 }
 174                 action->setData(QList<QVariant>{"audio_input", mode.first});
 175                 audio_input_submenu.addAction(action);
 176         }
 177
 178         audio_input_submenu.setTitle("Audio input");
 179         menu.addMenu(&audio_input_submenu);
 180
 181         // The same for resolution.
 182         QMenu mode_submenu;
 183         QActionGroup mode_group(&mode_submenu);
 184         std::map<uint32_t, VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
 185         uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
 186         bool has_auto_mode = false;
 187         for (const auto &mode : video_modes) {
 188                 QString description(QString::fromStdString(mode.second.name));
 189                 QAction *action = new QAction(description, &mode_group);
 190                 action->setCheckable(true);
 191                 if (mode.first == current_video_mode) {
 192                         action->setChecked(true);
 193                 }
 194                 action->setData(QList<QVariant>{"video_mode", mode.first});
 195                 mode_submenu.addAction(action);
 196
 197                 // TODO: Relying on the 0 value here (from bmusb.h) is ugly, it should be a named constant.
 198                 if (mode.first == 0) {
 199                         has_auto_mode = true;
 200                 }
 201         }
 202
 203         // Add a “scan” menu if there's no “auto” mode.
 204         if (!has_auto_mode) {
 205                 QAction *action = new QAction("Scan", &mode_group);
 206                 action->setData(QList<QVariant>{"video_mode", 0});
 207                 mode_submenu.addSeparator();
 208                 mode_submenu.addAction(action);
 209         }
 210
 211         mode_submenu.setTitle("Input mode");
 212         menu.addMenu(&mode_submenu);
 213
 214
 215         // Add an audio source selector.
 216         QAction *audio_source_action = new QAction("Use as audio source", &menu);
 217         audio_source_action->setCheckable(true);
 218         if (global_mixer->get_audio_source() == signal_num) {
 219                 audio_source_action->setChecked(true);
 220                 audio_source_action->setEnabled(false);
 221         }
 222         menu.addAction(audio_source_action);
 223
 224         // Show the menu and look at the result.
 225         QAction *selected_item = menu.exec(global_pos);
 226         if (selected_item == audio_source_action) {
 227                 global_mixer->set_audio_source(signal_num);
 228         } else if (selected_item != nullptr) {
 229                 QList<QVariant> selected = selected_item->data().toList();
 230                 if (selected[0].toString() == "video_mode") {
 231                         uint32_t mode = selected[1].toUInt(nullptr);
 232                         if (mode == 0 && !has_auto_mode) {
 233                                 global_mixer->start_mode_scanning(current_card);
 234                         } else {
 235                                 global_mixer->set_video_mode(current_card, mode);
 236                         }
 237                 } else if (selected[0].toString() == "video_input") {
 238                         uint32_t input = selected[1].toUInt(nullptr);
 239                         global_mixer->set_video_input(current_card, input);
 240                 } else if (selected[0].toString() == "audio_input") {
 241                         uint32_t input = selected[1].toUInt(nullptr);
 242                         global_mixer->set_audio_input(current_card, input);
 243                 } else if (selected[0].toString() == "card") {
 244                         unsigned card_index = selected[1].toUInt(nullptr);
 245                         global_mixer->set_signal_mapping(signal_num, card_index);
 246                 } else {
 247                         assert(false);
 248                 }
 249         }
 250 }