mirror of
https://github.com/isledecomp/SIEdit.git
synced 2024-12-14 01:31:03 -05:00
117 lines
2.8 KiB
C++
117 lines
2.8 KiB
C++
#include "wavpanel.h"
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#include <iostream>
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#include <object.h>
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#include <QGroupBox>
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#include <QHBoxLayout>
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WavPanel::WavPanel(QWidget *parent) :
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Panel(parent),
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audio_out_(nullptr)
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{
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int row = 0;
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auto wav_group = new QGroupBox(tr("Playback"));
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layout()->addWidget(wav_group, row, 0, 1, 2);
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auto wav_layout = new QHBoxLayout(wav_group);
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playhead_slider_ = new QSlider(Qt::Horizontal);
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playhead_slider_->setMinimum(0);
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connect(playhead_slider_, &QSlider::valueChanged, this, &WavPanel::SliderMoved);
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wav_layout->addWidget(playhead_slider_);
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play_btn_ = new QPushButton(tr("Play"));
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play_btn_->setCheckable(true);
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connect(play_btn_, &QPushButton::clicked, this, &WavPanel::Play);
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wav_layout->addWidget(play_btn_);
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FinishLayout();
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buffer_.setBuffer(&array_);
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playback_timer_ = new QTimer(this);
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playback_timer_->setInterval(100);
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connect(playback_timer_, &QTimer::timeout, this, &WavPanel::TimerUpdate);
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}
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void WavPanel::OnOpeningData(void *data)
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{
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si::Object *o = static_cast<si::Object*>(data);
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// Find fmt and data
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header_ = *o->GetFileHeader().cast<si::WAVFmt>();
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playhead_slider_->setMaximum(o->GetFileBodySize()/GetSampleSize());
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}
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void WavPanel::OnClosingData(void *data)
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{
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Play(false);
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playhead_slider_->setValue(0);
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}
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int WavPanel::GetSampleSize() const
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{
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return (header_.BitsPerSample/8) * header_.Channels;
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}
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void WavPanel::Play(bool e)
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{
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if (audio_out_) {
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audio_out_->stop();
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delete audio_out_;
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audio_out_ = nullptr;
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}
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buffer_.close();
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array_.clear();
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playback_timer_->stop();
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if (e) {
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si::Object *o = static_cast<si::Object*>(GetData());
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si::bytearray pcm = o->GetFileBody();
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array_ = QByteArray(pcm.data(), pcm.size());
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buffer_.open(QBuffer::ReadOnly);
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size_t start = 0;
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if (playhead_slider_->value() < playhead_slider_->maximum()) {
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start += playhead_slider_->value() * GetSampleSize();
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}
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buffer_.seek(start);
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QAudioFormat audio_fmt;
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audio_fmt.setSampleRate(header_.SampleRate);
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audio_fmt.setChannelCount(header_.Channels);
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audio_fmt.setSampleSize(header_.BitsPerSample);
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audio_fmt.setByteOrder(QAudioFormat::LittleEndian);
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audio_fmt.setCodec(QStringLiteral("audio/pcm"));
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audio_fmt.setSampleType(QAudioFormat::SignedInt);
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audio_out_ = new QAudioOutput(audio_fmt, this);
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connect(audio_out_, &QAudioOutput::stateChanged, this, &WavPanel::OutputChanged);
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audio_out_->start(&buffer_);
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playback_timer_->start();
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}
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}
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void WavPanel::TimerUpdate()
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{
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playhead_slider_->setValue(buffer_.pos() / GetSampleSize());
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}
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void WavPanel::OutputChanged(QAudio::State state)
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{
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if (state != QAudio::ActiveState) {
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Play(false);
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play_btn_->setChecked(false);
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}
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}
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void WavPanel::SliderMoved(int i)
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{
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if (buffer_.isOpen()) {
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buffer_.seek(i * GetSampleSize());
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}
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}
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