git.sesse.net Git - nageru/blob - glwidget.cpp

   1 #include "glwidget.h"
   2
   3 #include <assert.h>
   4 #include <bmusb/bmusb.h>
   5 #include <movit/effect_chain.h>
   6 #include <movit/resource_pool.h>
   7 #include <stdbool.h>
   8 #include <stdint.h>
   9 #include <QAction>
  10 #include <QActionGroup>
  11 #include <QInputDialog>
  12 #include <QList>
  13 #include <QMenu>
  14 #include <QPoint>
  15 #include <QVariant>
  16 #include <QWidget>
  17 #include <functional>
  18 #include <map>
  19 #include <mutex>
  20 #include <utility>
  21
  22 #include "audio_mixer.h"
  23 #include "context.h"
  24 #include "context_menus.h"
  25 #include "flags.h"
  26 #include "mainwindow.h"
  27 #include "mixer.h"
  28 #include "ref_counted_gl_sync.h"
  29
  30 class QMouseEvent;
  31
  32 #undef Success
  33 #include <movit/util.h>
  34 #include <string>
  35
  36 using namespace movit;
  37 using namespace std;
  38 using namespace std::placeholders;
  39
  40 namespace {
  41
  42 double srgb_to_linear(double x)
  43 {
  44         if (x < 0.04045) {
  45                 return x / 12.92;
  46         } else {
  47                 return pow((x + 0.055) / 1.055, 2.4);
  48         }
  49 }
  50
  51 }  // namespace
  52
  53 GLWidget::GLWidget(QWidget *parent)
  54     : QGLWidget(parent, global_share_widget)
  55 {
  56 }
  57
  58 GLWidget::~GLWidget()
  59 {
  60 }
  61
  62 void GLWidget::shutdown()
  63 {
  64         if (resource_pool != nullptr) {
  65                 makeCurrent();
  66                 resource_pool->clean_context();
  67         }
  68         global_mixer->remove_frame_ready_callback(output, this);
  69 }
  70
  71 void GLWidget::grab_white_balance(unsigned channel, unsigned x, unsigned y)
  72 {
  73         // Set the white balance to neutral for the grab. It's probably going to
  74         // flicker a bit, but hopefully this display is not live anyway.
  75         global_mixer->set_wb(output, 0.5, 0.5, 0.5);
  76         global_mixer->wait_for_next_frame();
  77
  78         // Mark that the next paintGL() should grab the given pixel.
  79         grab_x = x;
  80         grab_y = y;
  81         grab_output = Mixer::Output(Mixer::OUTPUT_INPUT0 + channel);
  82         should_grab = true;
  83
  84         updateGL();
  85 }
  86
  87 void GLWidget::initializeGL()
  88 {
  89         static once_flag flag;
  90         call_once(flag, [this]{
  91                 global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()), global_flags.num_cards);
  92                 global_audio_mixer = global_mixer->get_audio_mixer();
  93                 global_mainwindow->mixer_created(global_mixer);
  94                 global_mixer->start();
  95         });
  96         global_mixer->add_frame_ready_callback(output, this, [this]{
  97                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  98         });
  99         if (output == Mixer::OUTPUT_LIVE) {
 100                 global_mixer->set_transition_names_updated_callback(output, [this](const vector<string> &names){
 101                         emit transition_names_updated(names);
 102                 });
 103         }
 104         if (output >= Mixer::OUTPUT_INPUT0) {
 105                 global_mixer->set_name_updated_callback(output, [this](const string &name){
 106                         emit name_updated(output, name);
 107                 });
 108                 global_mixer->set_color_updated_callback(output, [this](const string &color){
 109                         emit color_updated(output, color);
 110                 });
 111         }
 112         setContextMenuPolicy(Qt::CustomContextMenu);
 113         connect(this, &QWidget::customContextMenuRequested, bind(&GLWidget::show_context_menu, this, _1));
 114
 115         glDisable(GL_BLEND);
 116         glDisable(GL_DEPTH_TEST);
 117         glDepthMask(GL_FALSE);
 118 }
 119
 120 void GLWidget::resizeGL(int width, int height)
 121 {
 122         current_width = width;
 123         current_height = height;
 124         glViewport(0, 0, width, height);
 125 }
 126
 127 void GLWidget::paintGL()
 128 {
 129         Mixer::DisplayFrame frame;
 130         if (!global_mixer->get_display_frame(output, &frame)) {
 131                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
 132                 check_error();
 133                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 134                 check_error();
 135                 return;
 136         }
 137
 138         check_error();
 139         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
 140         check_error();
 141         frame.setup_chain();
 142         check_error();
 143         glDisable(GL_FRAMEBUFFER_SRGB);
 144         check_error();
 145         frame.chain->render_to_fbo(0, current_width, current_height);
 146         check_error();
 147
 148         if (resource_pool == nullptr) {
 149                 resource_pool = frame.chain->get_resource_pool();
 150         } else {
 151                 assert(resource_pool == frame.chain->get_resource_pool());
 152         }
 153
 154         if (should_grab) {
 155                 GLfloat reference_color[4];
 156                 glReadPixels(grab_x, current_height - grab_y - 1, 1, 1, GL_BGRA, GL_FLOAT, reference_color);
 157
 158                 double r = srgb_to_linear(reference_color[2]);
 159                 double g = srgb_to_linear(reference_color[1]);
 160                 double b = srgb_to_linear(reference_color[0]);
 161                 global_mixer->set_wb(grab_output, r, g, b);
 162                 should_grab = false;
 163         }
 164 }
 165
 166 void GLWidget::mousePressEvent(QMouseEvent *event)
 167 {
 168         emit clicked();
 169 }
 170
 171 void GLWidget::show_context_menu(const QPoint &pos)
 172 {
 173         if (output == Mixer::OUTPUT_LIVE) {
 174                 show_live_context_menu(pos);
 175         }
 176         if (output >= Mixer::OUTPUT_INPUT0) {
 177                 int signal_num = global_mixer->get_channel_signal(output);
 178                 if (signal_num != -1) {
 179                         show_preview_context_menu(signal_num, pos);
 180                 }
 181         }
 182 }
 183
 184 void GLWidget::show_live_context_menu(const QPoint &pos)
 185 {
 186         QPoint global_pos = mapToGlobal(pos);
 187
 188         QMenu menu;
 189
 190         // Add a submenu for selecting output card, with an action for each card.
 191         QMenu card_submenu;
 192         fill_hdmi_sdi_output_device_menu(&card_submenu);
 193         card_submenu.setTitle("HDMI/SDI output device");
 194         menu.addMenu(&card_submenu);
 195
 196         // Add a submenu for choosing the output resolution. Since this is
 197         // card-dependent, it is disabled if we haven't chosen a card
 198         // (but it's still there so that the user will know it exists).
 199         QMenu resolution_submenu;
 200         fill_hdmi_sdi_output_resolution_menu(&resolution_submenu);
 201         resolution_submenu.setTitle("HDMI/SDI output resolution");
 202         menu.addMenu(&resolution_submenu);
 203
 204         // Show the menu; if there's an action selected, it will deal with it itself.
 205         menu.exec(global_pos);
 206 }
 207
 208 void GLWidget::show_preview_context_menu(unsigned signal_num, const QPoint &pos)
 209 {
 210         QPoint global_pos = mapToGlobal(pos);
 211
 212         QMenu menu;
 213
 214         // Add a submenu for selecting input card, with an action for each card.
 215         QMenu card_submenu;
 216         QActionGroup card_group(&card_submenu);
 217
 218         QMenu interpretation_submenu;
 219         QActionGroup interpretation_group(&interpretation_submenu);
 220
 221         QMenu video_input_submenu;
 222         QActionGroup video_input_group(&video_input_submenu);
 223
 224         QMenu audio_input_submenu;
 225         QActionGroup audio_input_group(&audio_input_submenu);
 226
 227         QMenu mode_submenu;
 228         QActionGroup mode_group(&mode_submenu);
 229
 230         unsigned num_cards = global_mixer->get_num_cards();
 231         unsigned current_card = global_mixer->map_signal(signal_num);
 232         bool is_ffmpeg = global_mixer->card_is_ffmpeg(current_card);
 233
 234         if (!is_ffmpeg) {  // FFmpeg inputs are not connected to any card; they're locked to a given input and have a given Y'CbCr interpretatio and have a given Y'CbCr interpretationn.
 235                 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
 236                         QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
 237                         QAction *action = new QAction(description, &card_group);
 238                         action->setCheckable(true);
 239                         if (current_card == card_index) {
 240                                 action->setChecked(true);
 241                         }
 242                         action->setData(QList<QVariant>{"card", card_index});
 243                         card_submenu.addAction(action);
 244                 }
 245
 246                 card_submenu.setTitle("Input source");
 247                 menu.addMenu(&card_submenu);
 248
 249                 // Note that this setting depends on which card is active.
 250
 251                 YCbCrInterpretation current_interpretation = global_mixer->get_input_ycbcr_interpretation(current_card);
 252                 {
 253                         QAction *action = new QAction("Auto", &interpretation_group);
 254                         action->setCheckable(true);
 255                         if (current_interpretation.ycbcr_coefficients_auto) {
 256                                 action->setChecked(true);
 257                         }
 258                         action->setData(QList<QVariant>{"interpretation", true, YCBCR_REC_709, false});
 259                         interpretation_submenu.addAction(action);
 260                 }
 261                 for (YCbCrLumaCoefficients ycbcr_coefficients : { YCBCR_REC_709, YCBCR_REC_601 }) {
 262                         for (bool full_range : { false, true }) {
 263                                 std::string description;
 264                                 if (ycbcr_coefficients == YCBCR_REC_709) {
 265                                         description = "Rec. 709 (HD)";
 266                                 } else {
 267                                         description = "Rec. 601 (SD)";
 268                                 }
 269                                 if (full_range) {
 270                                         description += ", full range (nonstandard)";
 271                                 }
 272                                 QAction *action = new QAction(QString::fromStdString(description), &interpretation_group);
 273                                 action->setCheckable(true);
 274                                 if (!current_interpretation.ycbcr_coefficients_auto &&
 275                                     ycbcr_coefficients == current_interpretation.ycbcr_coefficients &&
 276                                     full_range == current_interpretation.full_range) {
 277                                         action->setChecked(true);
 278                                 }
 279                                 action->setData(QList<QVariant>{"interpretation", false, ycbcr_coefficients, full_range});
 280                                 interpretation_submenu.addAction(action);
 281                         }
 282                 }
 283
 284                 interpretation_submenu.setTitle("Input interpretation");
 285                 menu.addMenu(&interpretation_submenu);
 286         }
 287
 288         // --- The choices in the next few options depend a lot on which card is active ---
 289
 290         bool has_auto_mode = false;
 291         QAction *change_url_action = nullptr;
 292         if (is_ffmpeg) {
 293                 // Add a menu to change the source URL if we're an FFmpeg card.
 294                 // (The theme can still override.)
 295                 if (global_mixer->card_is_ffmpeg(current_card)) {
 296                         change_url_action = new QAction("Change source filename/URL…", &menu);
 297                         menu.addAction(change_url_action);
 298                 }
 299         } else {
 300                 // Add a submenu for selecting video input, with an action for each input.
 301                 std::map<uint32_t, string> video_inputs = global_mixer->get_available_video_inputs(current_card);
 302                 uint32_t current_video_input = global_mixer->get_current_video_input(current_card);
 303                 for (const auto &mode : video_inputs) {
 304                         QString description(QString::fromStdString(mode.second));
 305                         QAction *action = new QAction(description, &video_input_group);
 306                         action->setCheckable(true);
 307                         if (mode.first == current_video_input) {
 308                                 action->setChecked(true);
 309                         }
 310                         action->setData(QList<QVariant>{"video_input", mode.first});
 311                         video_input_submenu.addAction(action);
 312                 }
 313
 314                 video_input_submenu.setTitle("Video input");
 315                 menu.addMenu(&video_input_submenu);
 316
 317                 // The same for audio input.
 318                 std::map<uint32_t, string> audio_inputs = global_mixer->get_available_audio_inputs(current_card);
 319                 uint32_t current_audio_input = global_mixer->get_current_audio_input(current_card);
 320                 for (const auto &mode : audio_inputs) {
 321                         QString description(QString::fromStdString(mode.second));
 322                         QAction *action = new QAction(description, &audio_input_group);
 323                         action->setCheckable(true);
 324                         if (mode.first == current_audio_input) {
 325                                 action->setChecked(true);
 326                         }
 327                         action->setData(QList<QVariant>{"audio_input", mode.first});
 328                         audio_input_submenu.addAction(action);
 329                 }
 330
 331                 audio_input_submenu.setTitle("Audio input");
 332                 menu.addMenu(&audio_input_submenu);
 333
 334                 // The same for resolution.
 335                 std::map<uint32_t, bmusb::VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
 336                 uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
 337                 for (const auto &mode : video_modes) {
 338                         QString description(QString::fromStdString(mode.second.name));
 339                         QAction *action = new QAction(description, &mode_group);
 340                         action->setCheckable(true);
 341                         if (mode.first == current_video_mode) {
 342                                 action->setChecked(true);
 343                         }
 344                         action->setData(QList<QVariant>{"video_mode", mode.first});
 345                         mode_submenu.addAction(action);
 346
 347                         // TODO: Relying on the 0 value here (from bmusb.h) is ugly, it should be a named constant.
 348                         if (mode.first == 0) {
 349                                 has_auto_mode = true;
 350                         }
 351                 }
 352
 353                 // Add a “scan” menu if there's no “auto” mode.
 354                 if (!has_auto_mode) {
 355                         QAction *action = new QAction("Scan", &mode_group);
 356                         action->setData(QList<QVariant>{"video_mode", 0});
 357                         mode_submenu.addSeparator();
 358                         mode_submenu.addAction(action);
 359                 }
 360
 361                 mode_submenu.setTitle("Input mode");
 362                 menu.addMenu(&mode_submenu);
 363         }
 364
 365         // --- End of card-dependent choices ---
 366
 367         // Add an audio source selector.
 368         QAction *audio_source_action = nullptr;
 369         if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::SIMPLE) {
 370                 audio_source_action = new QAction("Use as audio source", &menu);
 371                 audio_source_action->setCheckable(true);
 372                 if (global_audio_mixer->get_simple_input() == current_card) {
 373                         audio_source_action->setChecked(true);
 374                         audio_source_action->setEnabled(false);
 375                 }
 376                 menu.addAction(audio_source_action);
 377         }
 378
 379         // And a master clock selector.
 380         QAction *master_clock_action = new QAction("Use as master clock", &menu);
 381         master_clock_action->setCheckable(true);
 382         if (global_mixer->get_output_card_index() != -1) {
 383                 master_clock_action->setChecked(false);
 384                 master_clock_action->setEnabled(false);
 385         } else if (global_mixer->get_master_clock() == signal_num) {
 386                 master_clock_action->setChecked(true);
 387                 master_clock_action->setEnabled(false);
 388         }
 389         menu.addAction(master_clock_action);
 390
 391         // Show the menu and look at the result.
 392         QAction *selected_item = menu.exec(global_pos);
 393         if (audio_source_action != nullptr && selected_item == audio_source_action) {
 394                 global_audio_mixer->set_simple_input(current_card);
 395         } else if (change_url_action != nullptr && selected_item == change_url_action) {
 396                 // NOTE: We can't use “this” as parent, since the dialog would inherit our style sheet.
 397                 bool ok;
 398                 const string url = global_mixer->get_ffmpeg_filename(current_card);
 399                 QString new_url = QInputDialog::getText(window(), tr("Change URL"),
 400                         tr("Enter new filename/URL for the given video input:"), QLineEdit::Normal,
 401                                 QString::fromStdString(url), &ok);
 402                 // FIXME prefill the input
 403                 if (ok) {
 404                         global_mixer->set_ffmpeg_filename(current_card, new_url.toStdString());
 405                 }
 406         } else if (selected_item == master_clock_action) {
 407                 global_mixer->set_master_clock(signal_num);
 408         } else if (selected_item != nullptr) {
 409                 QList<QVariant> selected = selected_item->data().toList();
 410                 if (selected[0].toString() == "video_mode") {
 411                         uint32_t mode = selected[1].toUInt(nullptr);
 412                         if (mode == 0 && !has_auto_mode) {
 413                                 global_mixer->start_mode_scanning(current_card);
 414                         } else {
 415                                 global_mixer->set_video_mode(current_card, mode);
 416                         }
 417                 } else if (selected[0].toString() == "video_input") {
 418                         uint32_t input = selected[1].toUInt(nullptr);
 419                         global_mixer->set_video_input(current_card, input);
 420                 } else if (selected[0].toString() == "audio_input") {
 421                         uint32_t input = selected[1].toUInt(nullptr);
 422                         global_mixer->set_audio_input(current_card, input);
 423                 } else if (selected[0].toString() == "card") {
 424                         unsigned card_index = selected[1].toUInt(nullptr);
 425                         global_mixer->set_signal_mapping(signal_num, card_index);
 426                 } else if (selected[0].toString() == "interpretation") {
 427                         YCbCrInterpretation interpretation;
 428                         interpretation.ycbcr_coefficients_auto = selected[1].toBool();
 429                         interpretation.ycbcr_coefficients = YCbCrLumaCoefficients(selected[2].toUInt(nullptr));
 430                         interpretation.full_range = selected[3].toBool();
 431                         global_mixer->set_input_ycbcr_interpretation(current_card, interpretation);
 432                 } else {
 433                         assert(false);
 434                 }
 435         }
 436 }