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Code Issues Activity Actions

VideoPlayer: Start fleshing out the user interface

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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 2022-10-08 19:06:31 -05:00 • committed by Andreas Kling
parent 353e1c2b4d
commit f99d356a17
6 changed files with 429 additions and 82 deletions
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91
Userland/Applications/VideoPlayer/VideoFrameWidget.cpp Normal file
View file

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/*
* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
#include "VideoFrameWidget.h"
namespace VideoPlayer {
VideoFrameWidget::VideoFrameWidget()
{
set_auto_resize(true);
}
void VideoFrameWidget::set_bitmap(Gfx::Bitmap const* bitmap)
{
if (m_bitmap == bitmap)
return;
m_bitmap = bitmap;
if (m_bitmap && m_auto_resize)
set_fixed_size(m_bitmap->size());
update();
}
void VideoFrameWidget::set_auto_resize(bool value)
{
m_auto_resize = value;
if (m_bitmap)
set_fixed_size(m_bitmap->size());
}
void VideoFrameWidget::mousedown_event(GUI::MouseEvent&)
{
if (on_click)
on_click();
}
void VideoFrameWidget::paint_event(GUI::PaintEvent& event)
{
Frame::paint_event(event);
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.fill_rect(frame_inner_rect(), Gfx::Color::Black);
if (!m_bitmap)
return;
if (m_sizing_mode == VideoSizingMode::Stretch) {
painter.draw_scaled_bitmap(frame_inner_rect(), *m_bitmap, m_bitmap->rect(), 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
return;
}
auto center = frame_inner_rect().center();
if (m_sizing_mode == VideoSizingMode::FullSize) {
painter.blit(center.translated(-m_bitmap->width() / 2, -m_bitmap->height() / 2), *m_bitmap, m_bitmap->rect());
return;
}
VERIFY(m_sizing_mode < VideoSizingMode::Sentinel);
auto aspect_ratio = m_bitmap->width() / static_cast<float>(m_bitmap->height());
auto display_aspect_ratio = frame_inner_rect().width() / static_cast<float>(frame_inner_rect().height());
Gfx::IntSize display_size;
if ((display_aspect_ratio > aspect_ratio) == (m_sizing_mode == VideoSizingMode::Fit)) {
display_size = {
(frame_inner_rect().height() * m_bitmap->width()) / m_bitmap->height(),
frame_inner_rect().height(),
};
} else {
display_size = {
frame_inner_rect().width(),
(frame_inner_rect().width() * m_bitmap->height()) / m_bitmap->width(),
};
}
auto display_rect = Gfx::IntRect(center.translated(-display_size.width() / 2, -display_size.height() / 2), display_size);
painter.draw_scaled_bitmap(display_rect, *m_bitmap, m_bitmap->rect(), 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
}
}