SoundPlayer: Added playback controls

The playback of a file can now be paused, stopped, continued and the user can seek to any part of the file.
2025-05-28 10:15:07 +00:00 · 2019-11-04 19:45:19 +01:00 · 2019-11-04 19:45:19 +01:00 · 77f3c12dc9
commit 77f3c12dc9
parent 2f13517a1a
7 changed files with 405 additions and 49 deletions
--- a/Applications/SoundPlayer/SoundPlayerWidget.cpp
+++ b/Applications/SoundPlayer/SoundPlayerWidget.cpp
@ -0,0 +1,124 @@
+#include "SoundPlayerWidget.h"
+#include <AK/StringBuilder.h>
+#include <LibGUI/GBoxLayout.h>
+#include <LibGUI/GButton.h>
+#include <LibGUI/GLabel.h>
+#include <LibM/math.h>
+
+SoundPlayerWidget::SoundPlayerWidget(NonnullRefPtr<AClientConnection> connection, AWavLoader& loader)
+    : m_manager(PlaybackManager(connection, loader))
+{
+    set_fill_with_background_color(true);
+    set_layout(make<GBoxLayout>(Orientation::Vertical));
+    layout()->set_margins({ 2, 2, 2, 2 });
+
+    m_sample_ratio = PLAYBACK_MANAGER_RATE / static_cast<float>(loader.sample_rate());
+
+    auto status_widget = GWidget::construct(this);
+    status_widget->set_fill_with_background_color(true);
+    status_widget->set_layout(make<GBoxLayout>(Orientation::Horizontal));
+
+    m_elapsed = GLabel::construct(status_widget);
+    m_elapsed->set_frame_shape(FrameShape::Container);
+    m_elapsed->set_frame_shadow(FrameShadow::Sunken);
+    m_elapsed->set_frame_thickness(2);
+    m_elapsed->set_size_policy(SizePolicy::Fixed, SizePolicy::Fill);
+    m_elapsed->set_preferred_size(80, 0);
+
+    m_sample_widget = SampleWidget::construct(status_widget);
+
+    m_remaining = GLabel::construct(status_widget);
+    m_remaining->set_frame_shape(FrameShape::Container);
+    m_remaining->set_frame_shadow(FrameShadow::Sunken);
+    m_remaining->set_frame_thickness(2);
+    m_remaining->set_size_policy(SizePolicy::Fixed, SizePolicy::Fill);
+    m_remaining->set_preferred_size(80, 0);
+
+    m_slider = Slider::construct(Orientation::Horizontal, this);
+    m_slider->set_min(0);
+    m_slider->set_max(normalize_rate(static_cast<int>(loader.total_samples())));
+    m_slider->on_knob_released = [&](int value) { m_manager.seek(denormalize_rate(value)); };
+
+    auto control_widget = GWidget::construct(this);
+    control_widget->set_fill_with_background_color(true);
+    control_widget->set_layout(make<GBoxLayout>(Orientation::Horizontal));
+    control_widget->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
+    control_widget->set_preferred_size(0, 30);
+    control_widget->layout()->set_margins({ 10, 2, 10, 2 });
+    control_widget->layout()->set_spacing(10);
+
+    m_play = GButton::construct(control_widget);
+    m_play->set_icon(*m_pause_icon);
+    m_play->on_click = [this](GButton& button) {
+        button.set_icon(m_manager.toggle_pause() ? *m_play_icon : *m_pause_icon);
+    };
+
+    auto stop = GButton::construct(control_widget);
+    stop->set_icon(GraphicsBitmap::load_from_file("/res/icons/16x16/stop.png"));
+    stop->on_click = [&](GButton&) { m_manager.stop(); };
+
+    m_status = GLabel::construct(this);
+    m_status->set_frame_shape(FrameShape::Box);
+    m_status->set_frame_shadow(FrameShadow::Raised);
+    m_status->set_frame_thickness(4);
+    m_status->set_text_alignment(TextAlignment::CenterLeft);
+    m_status->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
+    m_status->set_preferred_size(0, 18);
+
+    m_status->set_text(String::format(
+        "Sample rate %uHz, %u channels, %u bits per sample",
+        loader.sample_rate(),
+        loader.num_channels(),
+        loader.bits_per_sample()));
+
+    update_position(0);
+
+    m_manager.on_update = [&]() { update_ui(); };
+    m_manager.play();
+}
+
+SoundPlayerWidget::~SoundPlayerWidget()
+{
+}
+
+SoundPlayerWidget::Slider::~Slider()
+{
+}
+
+int SoundPlayerWidget::normalize_rate(int rate) const
+{
+    return static_cast<int>(rate * m_sample_ratio);
+}
+
+int SoundPlayerWidget::denormalize_rate(int rate) const
+{
+    return static_cast<int>(rate / m_sample_ratio);
+}
+
+void SoundPlayerWidget::update_ui()
+{
+    m_sample_widget->set_buffer(m_manager.current_buffer());
+    m_play->set_icon(m_manager.is_paused() ? *m_play_icon : *m_pause_icon);
+    update_position(m_manager.connection()->get_played_samples());
+}
+
+void SoundPlayerWidget::update_position(const int position)
+{
+    int total_norm_samples = position + normalize_rate(m_manager.last_seek());
+    float seconds = (total_norm_samples / static_cast<float>(PLAYBACK_MANAGER_RATE));
+    float remaining_seconds = m_manager.total_length() - seconds;
+
+    m_elapsed->set_text(String::format(
+        "Position:\n%u:%02u.%02u",
+        static_cast<int>(seconds / 60),
+        static_cast<int>(seconds) % 60,
+        static_cast<int>(seconds * 100) % 100));
+
+    m_remaining->set_text(String::format(
+        "Remaining:\n%u:%02u.%02u",
+        static_cast<int>(remaining_seconds / 60),
+        static_cast<int>(remaining_seconds) % 60,
+        static_cast<int>(remaining_seconds * 100) % 100));
+
+    m_slider->set_value(total_norm_samples);
+}