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//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qcoreapplication.h>
#include <QtMultimedia/qaudioformat.h>
#include <QtNetwork>
#include <QTime>
#include "qmediacontent.h"
#include "qmediaplayer.h"
#include "qsoundeffect_p.h"
#include "wavedecoder.h"
#include "qsoundeffect_pulse_p.h"
#if(QT_MULTIMEDIA_MAEMO5)
#include <pulse/ext-stream-restore.h>
#endif
// Less than ideal
#define PA_SCACHE_ENTRY_SIZE_MAX (1024*1024*16)
namespace
{
inline pa_sample_spec audioFormatToSampleSpec(const QAudioFormat &format)
{
pa_sample_spec spec;
spec.rate = format.frequency();
spec.channels = format.channels();
if (format.sampleSize() == 8)
spec.format = PA_SAMPLE_U8;
else if (format.sampleSize() == 16) {
switch (format.byteOrder()) {
case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S16BE; break;
case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S16LE; break;
}
}
else if (format.sampleSize() == 32) {
switch (format.byteOrder()) {
case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S32BE; break;
case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S32LE; break;
}
}
return spec;
}
class PulseDaemon
{
public:
PulseDaemon():m_prepared(false)
{
prepare();
}
~PulseDaemon()
{
if (m_prepared)
release();
}
inline void lock()
{
pa_threaded_mainloop_lock(m_mainLoop);
}
inline void unlock()
{
pa_threaded_mainloop_unlock(m_mainLoop);
}
inline pa_context *context() const
{
return m_context;
}
int volume()
{
return m_volume;
}
private:
void prepare()
{
m_volume = 100;
m_mainLoop = pa_threaded_mainloop_new();
if (m_mainLoop == 0) {
qWarning("PulseAudioService: unable to create pulseaudio mainloop");
return;
}
if (pa_threaded_mainloop_start(m_mainLoop) != 0) {
qWarning("PulseAudioService: unable to start pulseaudio mainloop");
pa_threaded_mainloop_free(m_mainLoop);
return;
}
m_mainLoopApi = pa_threaded_mainloop_get_api(m_mainLoop);
lock();
m_context = pa_context_new(m_mainLoopApi, QString("QtPulseAudio:%1").arg(::getpid()).toAscii().constData());
#if(QT_MULTIMEDIA_MAEMO5)
pa_context_set_state_callback(m_context, context_state_callback, this);
#endif
if (m_context == 0) {
qWarning("PulseAudioService: Unable to create new pulseaudio context");
pa_threaded_mainloop_free(m_mainLoop);
return;
}
if (pa_context_connect(m_context, NULL, (pa_context_flags_t)0, NULL) < 0) {
qWarning("PulseAudioService: pa_context_connect() failed");
pa_context_unref(m_context);
pa_threaded_mainloop_free(m_mainLoop);
return;
}
unlock();
m_prepared = true;
}
void release()
{
if (!m_prepared) return;
pa_threaded_mainloop_stop(m_mainLoop);
pa_threaded_mainloop_free(m_mainLoop);
m_prepared = false;
}
#if(QT_MULTIMEDIA_MAEMO5)
static void context_state_callback(pa_context *c, void *userdata)
{
PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);
switch (pa_context_get_state(c)) {
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_READY:
pa_ext_stream_restore_set_subscribe_cb(c, &stream_restore_monitor_callback, self);
pa_ext_stream_restore_subscribe(c, 1, NULL, self);
break;
default:
break;
}
}
static void stream_restore_monitor_callback(pa_context *c, void *userdata)
{
PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);
pa_ext_stream_restore2_read(c, &stream_restore_info_callback, self);
}
static void stream_restore_info_callback(pa_context *c, const pa_ext_stream_restore2_info *info,
int eol, void *userdata)
{
Q_UNUSED(c)
PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);
if (!eol) {
if (QString(info->name).startsWith(QLatin1String("sink-input-by-media-role:x-maemo"))) {
const unsigned str_length = 256;
char str[str_length];
pa_cvolume_snprint(str, str_length, &info->volume);
self->m_volume = QString(str).replace(" ","").replace("%","").mid(2).toInt();
}
}
}
#endif
int m_volume;
bool m_prepared;
pa_context *m_context;
pa_threaded_mainloop *m_mainLoop;
pa_mainloop_api *m_mainLoopApi;
};
}
Q_GLOBAL_STATIC(PulseDaemon, daemon)
QSoundEffectPrivate::QSoundEffectPrivate(QObject* parent):
QObject(parent),
m_muted(false),
m_playQueued(false),
m_volume(100),
m_duration(0),
m_dataUploaded(0),
m_state(QMediaPlayer::StoppedState),
m_status(QMediaPlayer::NoMedia),
m_reply(0),
m_stream(0),
m_networkAccessManager(0)
{
}
QSoundEffectPrivate::~QSoundEffectPrivate()
{
delete m_reply;
unloadSample();
}
qint64 QSoundEffectPrivate::duration() const
{
return m_duration;
}
int QSoundEffectPrivate::volume() const
{
return m_volume;
}
bool QSoundEffectPrivate::isMuted() const
{
return m_muted;
}
QMediaContent QSoundEffectPrivate::media() const
{
return m_media;
}
QMediaPlayer::State QSoundEffectPrivate::state() const
{
return m_state;
}
QMediaPlayer::MediaStatus QSoundEffectPrivate::mediaStatus() const
{
return m_status;
}
void QSoundEffectPrivate::play()
{
if (m_status == QMediaPlayer::LoadingMedia) {
m_playQueued = true;
return;
}
if (m_status != QMediaPlayer::BufferedMedia ||
m_state == QMediaPlayer::PlayingState)
return;
pa_volume_t m_vol = PA_VOLUME_NORM;
daemon()->lock();
#if(QT_MULTIMEDIA_MAEMO5)
m_vol = PA_VOLUME_NORM/100*((daemon()->volume()+m_volume)/2);
#endif
pa_operation_unref(
pa_context_play_sample(daemon()->context(),
m_name.constData(),
0,
m_vol,
play_callback,
this)
);
daemon()->unlock();
m_playbackTime.start();
emit stateChanged(m_state = QMediaPlayer::PlayingState);
}
void QSoundEffectPrivate::stop()
{
emit stateChanged(m_state = QMediaPlayer::StoppedState);
}
void QSoundEffectPrivate::setVolume(int volume)
{
m_volume = volume;
}
void QSoundEffectPrivate::setMuted(bool muted)
{
m_muted = muted;
}
void QSoundEffectPrivate::setMedia(const QMediaContent &media)
{
if (media.isNull()) {
m_media = QMediaContent();
unloadSample();
return;
}
if (m_media == media)
return;
m_media = media;
if (m_networkAccessManager == 0)
m_networkAccessManager = new QNetworkAccessManager(this);
m_stream = m_networkAccessManager->get(QNetworkRequest(m_media.canonicalUrl()));
unloadSample();
loadSample();
emit mediaChanged(m_media);
}
void QSoundEffectPrivate::decoderReady()
{
if (m_waveDecoder->size() >= PA_SCACHE_ENTRY_SIZE_MAX) {
m_status = QMediaPlayer::InvalidMedia;
emit mediaStatusChanged(m_status);
qWarning("QtPulseAudio: attempting to load to large a sample");
return;
}
if (m_name.isNull())
m_name = QString("QtPulseSample-%1-%2").arg(::getpid()).arg(int(this)).toUtf8();
pa_sample_spec spec = audioFormatToSampleSpec(m_waveDecoder->audioFormat());
daemon()->lock();
pa_stream *stream = pa_stream_new(daemon()->context(), m_name.constData(), &spec, 0);
pa_stream_set_state_callback(stream, stream_state_callback, this);
pa_stream_set_write_callback(stream, stream_write_callback, this);
pa_stream_connect_upload(stream, (size_t)m_waveDecoder->size());
daemon()->unlock();
}
void QSoundEffectPrivate::decoderError()
{
emit mediaStatusChanged(m_status = QMediaPlayer::InvalidMedia);
}
void QSoundEffectPrivate::checkPlayTime()
{
int elapsed = m_playbackTime.elapsed();
if (elapsed >= m_duration) {
m_state = QMediaPlayer::StoppedState;
emit stateChanged(m_state);
}
else
startTimer(m_duration - elapsed);
}
void QSoundEffectPrivate::loadSample()
{
m_waveDecoder = new WaveDecoder(m_stream);
connect(m_waveDecoder, SIGNAL(formatKnown()), SLOT(decoderReady()));
connect(m_waveDecoder, SIGNAL(invalidFormat()), SLOT(decoderError()));
m_status = QMediaPlayer::LoadingMedia;
emit mediaStatusChanged(m_status);
}
void QSoundEffectPrivate::unloadSample()
{
if (m_status != QMediaPlayer::BufferedMedia)
return;
m_status = QMediaPlayer::NoMedia;
daemon()->lock();
pa_context_remove_sample(daemon()->context(), m_name.constData(), NULL, NULL);
daemon()->unlock();
m_duration = 0;
m_dataUploaded = 0;
}
void QSoundEffectPrivate::timerEvent(QTimerEvent *event)
{
if (m_state == QMediaPlayer::PlayingState) {
m_state = QMediaPlayer::StoppedState;
emit stateChanged(m_state);
}
killTimer(event->timerId());
}
void QSoundEffectPrivate::stream_write_callback(pa_stream *s, size_t length, void *userdata)
{
Q_UNUSED(length);
QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);
size_t bufferSize = qMin(pa_stream_writable_size(s),
size_t(self->m_waveDecoder->bytesAvailable()));
char buffer[bufferSize];
size_t len = 0;
while (len < length) {
qint64 read = self->m_waveDecoder->read(buffer, qMin(bufferSize, length -len));
if (read > 0) {
if (pa_stream_write(s, buffer, size_t(read), 0, 0, PA_SEEK_RELATIVE) == 0)
len += size_t(read);
else
break;
}
}
self->m_dataUploaded += len;
if (self->m_waveDecoder->size() == self->m_dataUploaded) {
pa_stream_finish_upload(s);
self->m_duration = self->m_waveDecoder->duration();
emit self->durationChanged(self->m_duration);
self->m_status = QMediaPlayer::BufferedMedia;
emit self->mediaStatusChanged(self->m_status);
self->m_waveDecoder->deleteLater();
if (!self->m_media.isNull())
self->m_stream->deleteLater();
if (self->m_playQueued) {
self->m_playQueued = false;
QMetaObject::invokeMethod(self, "play");
}
}
}
void QSoundEffectPrivate::stream_state_callback(pa_stream *s, void *userdata)
{
QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);
switch (pa_stream_get_state(s)) {
case PA_STREAM_CREATING:
case PA_STREAM_READY:
case PA_STREAM_TERMINATED:
break;
case PA_STREAM_FAILED:
default:
self->m_status = QMediaPlayer::InvalidMedia;
emit self->mediaStatusChanged(self->m_status);
break;
}
}
void QSoundEffectPrivate::play_callback(pa_context *c, int success, void *userdata)
{
Q_UNUSED(c);
QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);
if (success == 1)
QMetaObject::invokeMethod(self, "checkPlayTime", Qt::QueuedConnection);
else {
self->m_state = QMediaPlayer::StoppedState;
emit self->stateChanged(self->m_state);
}
}