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Qt: Smoothly start/stop audio with fade in and fade out

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This commit is contained in:
Megamouse 2026-03-23 09:32:16 +01:00
parent 26c3aca611
commit 37ba1992dd
1 changed files with 49 additions and 8 deletions
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57
rpcs3/rpcs3qt/qt_video_source.cpp
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@ -8,6 +8,7 @@
#include "Loader/ISO.h"
#include <QAudioOutput>
#include <QPropertyAnimation>
#include <QFile>
struct qt_audio_instance
@ -24,10 +25,17 @@ struct qt_audio_instance
static std::array<qt_audio_instance, 2> s_audio_instance = {};
static constexpr int emu_timeout_start_ms = 0;
static constexpr int gui_timeout_start_ms = 1000;
static constexpr int gui_fade_in_ms = 2000;
static constexpr int gui_fade_out_ms = 1000;
static_assert(gui_fade_out_ms <= gui_timeout_start_ms);
qt_video_source::qt_video_source(bool is_emulation)
: video_source()
, m_audio_instance_index(is_emulation ? qt_audio_instance::emu_index : qt_audio_instance::gui_index)
, m_video_timer_timeout_ms(is_emulation ? 0 : 1000)
, m_video_timer_timeout_ms(is_emulation ? emu_timeout_start_ms : gui_timeout_start_ms)
{
}
@ -301,7 +309,13 @@ void qt_video_source::start_audio()
volume = audio::get_volume();
}
audio.output->setVolume(std::clamp(volume, 0.0f, 1.0f));
QPropertyAnimation* fade_in = new QPropertyAnimation(audio.output.get(), "volume", audio.output.get());
fade_in->setDuration(gui_fade_in_ms);
fade_in->setStartValue(0.0);
fade_in->setEndValue(std::clamp(volume, 0.0f, 1.0f));
fade_in->setEasingCurve(QEasingCurve::InSine);
fade_in->start(QAbstractAnimation::DeleteWhenStopped);
audio.player->play();
audio.source = this;
}
@ -313,15 +327,42 @@ void qt_video_source::stop_audio()
audio.source = nullptr;
if (audio.player)
QMediaPlayer* player = audio.player.release();
QAudioOutput* output = audio.output.release();
QBuffer* buffer = audio.buffer.release();
QByteArray* data = audio.data.release();
const auto reset_player = [=]()
{
audio.player->stop();
audio.player.reset();
if (player)
{
player->stop();
delete player;
}
if (output) delete output;
if (buffer) delete buffer;
if (data) delete data;
};
if (output)
{
QPropertyAnimation* fade_out = new QPropertyAnimation(output, "volume", output);
fade_out->setDuration(gui_fade_out_ms);
fade_out->setEasingCurve(QEasingCurve::OutSine);
fade_out->setStartValue(output->volume());
fade_out->setEndValue(0.0);
QObject::connect(fade_out, &QPropertyAnimation::finished, [reset_player]()
{
reset_player();
});
fade_out->start(QAbstractAnimation::DeleteWhenStopped);
return;
}
audio.output.reset();
audio.buffer.reset();
audio.data.reset();
reset_player();
}
QPixmap qt_video_source::get_movie_image(const QVideoFrame& frame) const