1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "AudioProcessorQt.h"
  7
  8#include "AudioDevice.h"
  9#include "LogController.h"
 10
 11#include <QAudioOutput>
 12
 13#include "core/thread.h"
 14
 15using namespace QGBA;
 16
 17AudioProcessorQt::AudioProcessorQt(QObject* parent)
 18	: AudioProcessor(parent)
 19	, m_audioOutput(nullptr)
 20	, m_device(nullptr)
 21	, m_sampleRate(44100)
 22{
 23}
 24
 25void AudioProcessorQt::setInput(mCoreThread* input) {
 26	AudioProcessor::setInput(input);
 27	if (m_device) {
 28		m_device->setInput(input);
 29		if (m_audioOutput) {
 30			m_device->setFormat(m_audioOutput->format());
 31		}
 32	}
 33}
 34
 35bool AudioProcessorQt::start() {
 36	if (!input()) {
 37		LOG(QT, WARN) << tr("Can't start an audio processor without input");
 38		return false;
 39	}
 40
 41	if (!m_device) {
 42		m_device = new AudioDevice(this);
 43	}
 44
 45	if (!m_audioOutput) {
 46		QAudioFormat format;
 47		format.setSampleRate(m_sampleRate);
 48		format.setChannelCount(2);
 49		format.setSampleSize(16);
 50		format.setCodec("audio/pcm");
 51		format.setByteOrder(QAudioFormat::Endian(QSysInfo::ByteOrder));
 52		format.setSampleType(QAudioFormat::SignedInt);
 53
 54		m_audioOutput = new QAudioOutput(format, this);
 55		m_audioOutput->setCategory("game");
 56	}
 57
 58	m_device->setInput(input());
 59	m_device->setFormat(m_audioOutput->format());
 60	m_audioOutput->setBufferSize(input()->core->getAudioBufferSize(input()->core) * 4);
 61
 62	m_audioOutput->start(m_device);
 63	return m_audioOutput->state() == QAudio::ActiveState;
 64}
 65
 66void AudioProcessorQt::pause() {
 67	if (m_audioOutput) {
 68		m_audioOutput->stop();
 69	}
 70}
 71
 72void AudioProcessorQt::setBufferSamples(int samples) {
 73	AudioProcessor::setBufferSamples(samples);
 74	if (m_audioOutput) {
 75		m_audioOutput->stop();
 76		m_audioOutput->setBufferSize(samples * 4);
 77		m_audioOutput->start(m_device);
 78	}
 79}
 80
 81void AudioProcessorQt::inputParametersChanged() {
 82	if (m_device) {
 83		m_device->setFormat(m_audioOutput->format());
 84	}
 85}
 86
 87void AudioProcessorQt::requestSampleRate(unsigned rate) {
 88	m_sampleRate = rate;
 89	if (m_device) {
 90		QAudioFormat format(m_audioOutput->format());
 91		format.setSampleRate(rate);
 92		m_device->setFormat(format);
 93	}
 94}
 95
 96unsigned AudioProcessorQt::sampleRate() const {
 97	if (!m_audioOutput) {
 98		return 0;
 99	}
100	return m_audioOutput->format().sampleRate();
101}