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VideoPlayer: Start fleshing out the user interface
This adds player widget with working play/pause controls, a seek bar which currently only displays the current playback position, and a button to cycle between the scaling modes. The player uses the new PlaybackManager class to handle demuxing, decoding, and frame presentation timing. Currently, the volume control is non-functional.
This commit is contained in:
Zaggy1024
Andreas Kling
parent
353e1c2b4d
commit
f99d356a17
6 changed files with 429 additions and 82 deletions
187
Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
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187
Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
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/*
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* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGUI/Action.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/ImageWidget.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/MessageBox.h>
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#include <LibGUI/SeparatorWidget.h>
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#include <LibGUI/Slider.h>
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#include <LibGUI/Toolbar.h>
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#include <LibGUI/ToolbarContainer.h>
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#include <LibGUI/Window.h>
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#include "VideoPlayerWidget.h"
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namespace VideoPlayer {
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VideoPlayerWidget::VideoPlayerWidget(GUI::Window& window)
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: m_window(window)
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{
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set_fill_with_background_color(true);
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set_layout<GUI::VerticalBoxLayout>();
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m_video_display = add<VideoFrameWidget>();
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m_video_display->set_auto_resize(false);
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m_video_display->on_click = [&]() { toggle_pause(); };
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auto& player_controls_widget = add<GUI::Widget>();
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player_controls_widget.set_layout<GUI::VerticalBoxLayout>();
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player_controls_widget.set_max_height(50);
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m_seek_slider = player_controls_widget.add<GUI::HorizontalSlider>();
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m_seek_slider->set_fixed_height(20);
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m_seek_slider->set_enabled(false);
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auto& toolbar_container = player_controls_widget.add<GUI::ToolbarContainer>();
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m_toolbar = toolbar_container.add<GUI::Toolbar>();
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m_play_icon = Gfx::Bitmap::try_load_from_file("/res/icons/16x16/play.png"sv).release_value_but_fixme_should_propagate_errors();
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m_pause_icon = Gfx::Bitmap::try_load_from_file("/res/icons/16x16/pause.png"sv).release_value_but_fixme_should_propagate_errors();
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m_play_pause_action = GUI::Action::create("Play", { Key_Space }, m_play_icon, [&](auto&) {
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toggle_pause();
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});
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m_cycle_sizing_modes_action = GUI::Action::create("Sizing", [&](auto&) {
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cycle_sizing_modes();
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});
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m_toolbar->add_action(*m_play_pause_action);
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m_toolbar->add<GUI::VerticalSeparator>();
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m_timestamp_label = m_toolbar->add<GUI::Label>();
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m_timestamp_label->set_fixed_width(50);
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m_toolbar->add<GUI::Widget>(); // Filler widget
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m_toolbar->add_action(*m_cycle_sizing_modes_action);
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m_toolbar->add<GUI::VerticalSeparator>();
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m_volume_slider = m_toolbar->add<GUI::HorizontalSlider>();
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m_volume_slider->set_min(0);
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m_volume_slider->set_max(100);
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m_volume_slider->set_fixed_width(100);
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}
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void VideoPlayerWidget::open_file(StringView filename)
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{
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auto load_file_result = Video::PlaybackManager::from_file(this, filename);
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if (load_file_result.is_error()) {
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on_decoding_error(load_file_result.release_error());
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return;
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}
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m_playback_manager = load_file_result.release_value();
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resume_playback();
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}
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void VideoPlayerWidget::update_play_pause_icon()
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{
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if (!m_playback_manager) {
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m_play_pause_action->set_enabled(false);
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m_play_pause_action->set_icon(m_play_icon);
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return;
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}
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m_play_pause_action->set_enabled(true);
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if (m_playback_manager->is_playing() || m_playback_manager->is_buffering())
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m_play_pause_action->set_icon(m_pause_icon);
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else
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m_play_pause_action->set_icon(m_play_icon);
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}
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void VideoPlayerWidget::resume_playback()
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{
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if (!m_playback_manager)
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return;
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m_playback_manager->resume_playback();
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update_play_pause_icon();
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}
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void VideoPlayerWidget::pause_playback()
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{
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if (!m_playback_manager)
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return;
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m_playback_manager->pause_playback();
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update_play_pause_icon();
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}
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void VideoPlayerWidget::toggle_pause()
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{
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if (!m_playback_manager)
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return;
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if (m_playback_manager->is_playing() || m_playback_manager->is_buffering())
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pause_playback();
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else
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resume_playback();
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}
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void VideoPlayerWidget::on_decoding_error(Video::DecoderError error)
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{
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StringView text_format;
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switch (error.category()) {
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case Video::DecoderErrorCategory::IO:
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text_format = "Error while reading video:\n{}"sv;
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break;
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case Video::DecoderErrorCategory::Memory:
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text_format = "Ran out of memory:\n{}"sv;
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break;
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case Video::DecoderErrorCategory::Corrupted:
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text_format = "Video was corrupted:\n{}"sv;
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break;
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case Video::DecoderErrorCategory::Invalid:
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text_format = "Invalid call:\n{}"sv;
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break;
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case Video::DecoderErrorCategory::NotImplemented:
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text_format = "Video feature is not yet implemented:\n{}"sv;
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break;
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default:
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text_format = "Unexpected error:\n{}"sv;
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break;
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}
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GUI::MessageBox::show(&m_window, String::formatted(text_format, error.string_literal()), "Video Player encountered an error"sv);
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}
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void VideoPlayerWidget::event(Core::Event& event)
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{
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if (event.type() == Video::EventType::DecoderErrorOccurred) {
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auto& error_event = static_cast<Video::DecoderErrorEvent&>(event);
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on_decoding_error(error_event.error());
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error_event.accept();
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} else if (event.type() == Video::EventType::VideoFramePresent) {
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auto& frame_event = static_cast<Video::VideoFramePresentEvent&>(event);
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m_video_display->set_bitmap(frame_event.frame());
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m_video_display->repaint();
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m_seek_slider->set_max(m_playback_manager->duration().to_milliseconds());
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m_seek_slider->set_value(m_playback_manager->current_playback_time().to_milliseconds());
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m_seek_slider->set_enabled(true);
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frame_event.accept();
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} else if (event.type() == Video::EventType::PlaybackStatusChange) {
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update_play_pause_icon();
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event.accept();
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}
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Widget::event(event);
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}
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void VideoPlayerWidget::cycle_sizing_modes()
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{
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auto sizing_mode = m_video_display->sizing_mode();
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sizing_mode = static_cast<VideoSizingMode>((to_underlying(sizing_mode) + 1) % to_underlying(VideoSizingMode::Sentinel));
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m_video_display->set_sizing_mode(sizing_mode);
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m_video_display->update();
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}
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}
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