mirror of
https://github.com/RGBCube/serenity
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1ecb7462b7
In order to repaint the GUI after the sound thread has produced some sweet new waves, we post a CCustomEvent to the main thread's event loop and then wake up that event loop via CEventLoop::wake().
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
#include "Music.h"
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#include "PianoWidget.h"
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#include <LibAudio/AClientConnection.h>
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#include <LibCore/CFile.h>
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#include <LibCore/CThread.h>
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#include <LibGUI/GApplication.h>
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#include <LibGUI/GEventLoop.h>
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#include <LibGUI/GWindow.h>
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int main(int argc, char** argv)
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{
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AClientConnection audio_connection;
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GApplication app(argc, argv);
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auto* window = new GWindow;
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window->set_title("Piano");
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window->set_rect(100, 100, 512, 512);
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auto* piano_widget = new PianoWidget;
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window->set_main_widget(piano_widget);
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window->show();
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window->set_icon_path("/res/icons/16x16/app-piano.png");
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CThread sound_thread([](void* context) -> int {
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auto* piano_widget = (PianoWidget*)context;
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CFile audio("/dev/audio");
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if (!audio.open(CIODevice::WriteOnly)) {
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dbgprintf("Can't open audio device: %s", audio.error_string());
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return 1;
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}
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for (;;) {
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u8 buffer[4096];
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piano_widget->fill_audio_buffer(buffer, sizeof(buffer));
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audio.write(buffer, sizeof(buffer));
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GEventLoop::current().post_event(*piano_widget, make<CCustomEvent>(0));
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GEventLoop::current().wake();
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}
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},
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piano_widget);
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return app.exec();
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}
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