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VideoPlayer: Create application to parse (and eventually play) videos

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This application will eventually be able to actually play videos, but
for now it is used to parse and dump decoded data from the VP9 decoder.
This commit is contained in:
FalseHonesty 2021-06-05 16:42:25 -04:00 • committed by Ali Mohammad Pur
parent baff94e44d
commit fa101d6bf6
3 changed files with 60 additions and 0 deletions
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53
Userland/Applications/VideoPlayer/main.cpp Normal file
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/*
* Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibAudio/ClientConnection.h>
#include <LibCore/EventLoop.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/ImageWidget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibVideo/MatroskaReader.h>
#include <LibVideo/VP9/Decoder.h>
int main(int argc, char** argv)
{
auto app = GUI::Application::construct(argc, argv);
auto window = GUI::Window::construct();
auto document = Video::MatroskaReader::parse_matroska_from_file("/home/anon/Videos/test-webm.webm");
const auto& optional_track = document->track_for_track_type(Video::TrackEntry::TrackType::Video);
if (!optional_track.has_value())
return 1;
const auto& track = optional_track.value();
const auto video_track = track.video_track().value();
auto image = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, Gfx::IntSize(video_track.pixel_height, video_track.pixel_width));
auto& main_widget = window->set_main_widget<GUI::Widget>();
main_widget.set_fill_with_background_color(true);
main_widget.set_layout<GUI::VerticalBoxLayout>();
auto& image_widget = main_widget.add<GUI::ImageWidget>();
image_widget.set_bitmap(image);
image_widget.set_fixed_size(video_track.pixel_height, video_track.pixel_width);
main_widget.add_child(image_widget);
Video::VP9::Decoder vp9_decoder;
for (const auto& cluster : document->clusters()) {
for (const auto& block : cluster.blocks()) {
if (block.track_number() != track.track_number())
continue;
const auto& frame = block.frame(0);
dbgln("Reading frame 0 from block @ {}", block.timestamp());
vp9_decoder.parse_frame(frame);
vp9_decoder.dump_info();
}
}
window->show();
return app->exec();
}