Add a menu option where the user can change the input resolution.

[nageru] / glwidget.cpp

diff --git a/glwidget.cpp b/glwidget.cpp
index 01d372f1adb92f0ca6abee6f07119056a8dc9ed2..9215fcad2219360a047e5878d61b0b77b0335c62 100644 (file)
--- a/glwidget.cpp
+++ b/glwidget.cpp
@@ -6,17 +6,19 @@
 #include <qevent.h>  // Needs to come before egl.h.
 #include <epoxy/gl.h>
 #include <epoxy/egl.h>
+#include <QAction>
+#include <QMenu>
 #include <QSurfaceFormat>
-#include <movit/resource_pool.h>
 
 #include "glwidget.h"
 
 #include <stdio.h>
 #include <functional>
 #include <mutex>
+#include <movit/effect_chain.h>
+#include <movit/resource_pool.h>
 
 #include "context.h"
-#include "effect_chain.h"
 #include "flags.h"
 #include "mainwindow.h"
 #include "mixer.h"
@@ -31,6 +33,7 @@ class QWidget;
 #include <string>
 
 using namespace std;
+using namespace std::placeholders;
 
 GLWidget::GLWidget(QWidget *parent)
     : QGLWidget(parent, global_share_widget)
@@ -47,8 +50,8 @@ void GLWidget::clean_context()
 
 void GLWidget::initializeGL()
 {
-       static std::once_flag flag;
-       std::call_once(flag, [this]{
+       static once_flag flag;
+       call_once(flag, [this]{
                global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()), global_flags.num_cards);
                global_mainwindow->mixer_created(global_mixer);
                global_mixer->start();
@@ -59,6 +62,15 @@ void GLWidget::initializeGL()
                emit resolution_updated(output);
        });
 
+       if (output >= Mixer::OUTPUT_INPUT0) {
+               int signal_num = global_mixer->get_channel_signal(output);
+               if (signal_num != -1) {
+                       setContextMenuPolicy(Qt::CustomContextMenu);
+                       connect(this, &QWidget::customContextMenuRequested,
+                               bind(&GLWidget::show_context_menu, this, signal_num, _1));
+               }
+       }
+
        glDisable(GL_BLEND);
        glDisable(GL_DEPTH_TEST);
        glDepthMask(GL_FALSE);
@@ -99,3 +111,76 @@ void GLWidget::mousePressEvent(QMouseEvent *event)
 {
        emit clicked();
 }
+
+void GLWidget::show_context_menu(unsigned signal_num, const QPoint &pos)
+{
+       QPoint global_pos = mapToGlobal(pos);
+
+       QMenu menu;
+
+       // Add a submenu for selecting input card, with an action for each card.
+       QMenu card_submenu;
+       QActionGroup card_group(&card_submenu);
+
+       unsigned num_cards = global_mixer->get_num_cards();
+       unsigned current_card = global_mixer->map_signal(signal_num);
+       for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
+               QString description(QString::fromStdString(global_mixer->get_card_description(card_index)));
+               QAction *action = new QAction(description, &card_group);
+               action->setCheckable(true);
+               if (current_card == card_index) {
+                       action->setChecked(true);
+               }
+               action->setData(QList<QVariant>{"card", card_index});
+               card_submenu.addAction(action);
+       }
+
+       card_submenu.setTitle("Input source");
+       menu.addMenu(&card_submenu);
+
+       // Add a submenu for selecting resolution, with an action for each resolution.
+       // Note that the choice depends a lot on which card is active.
+       QMenu mode_submenu;
+       QActionGroup mode_group(&mode_submenu);
+       std::map<uint32_t, VideoMode> video_modes = global_mixer->get_available_video_modes(current_card);
+       uint32_t current_video_mode = global_mixer->get_current_video_mode(current_card);
+       for (const auto &mode : video_modes) {
+               QString description(QString::fromStdString(mode.second.name));
+               QAction *action = new QAction(description, &mode_group);
+               action->setCheckable(true);
+               if (mode.first == current_video_mode) {
+                       action->setChecked(true);
+               }
+               action->setData(QList<QVariant>{"video_mode", mode.first});
+               mode_submenu.addAction(action);
+       }
+
+       mode_submenu.setTitle("Input mode");
+       menu.addMenu(&mode_submenu);
+
+       // Add an audio source selector.
+       QAction *audio_source_action = new QAction("Use as audio source", &menu);
+       audio_source_action->setCheckable(true);
+       if (global_mixer->get_audio_source() == signal_num) {
+               audio_source_action->setChecked(true);
+               audio_source_action->setEnabled(false);
+       }
+       menu.addAction(audio_source_action);
+
+       // Show the menu and look at the result.
+       QAction *selected_item = menu.exec(global_pos);
+       if (selected_item == audio_source_action) {
+               global_mixer->set_audio_source(signal_num);
+       } else if (selected_item != nullptr) {
+               QList<QVariant> selected = selected_item->data().toList();
+               if (selected[0].toString() == "video_mode") {
+                       uint32_t mode = selected[1].toUInt(nullptr);
+                       global_mixer->set_video_mode(current_card, mode);
+               } else if (selected[0].toString() == "card") {
+                       unsigned card_index = selected[1].toUInt(nullptr);
+                       global_mixer->set_signal_mapping(signal_num, card_index);
+               } else {
+                       assert(false);
+               }
+       }
+}