diff options
Diffstat (limited to 'src/multimedia/effects/qsoundeffect_pulse_p.cpp')
| -rw-r--r-- | src/multimedia/effects/qsoundeffect_pulse_p.cpp | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/src/multimedia/effects/qsoundeffect_pulse_p.cpp b/src/multimedia/effects/qsoundeffect_pulse_p.cpp new file mode 100644 index 0000000..e379259 --- /dev/null +++ b/src/multimedia/effects/qsoundeffect_pulse_p.cpp @@ -0,0 +1,499 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtMultimedia module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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 "wavedecoder_p.h" + +#include "qsoundeffect_pulse_p.h" + +#if defined(Q_WS_MAEMO_5) +#include <pulse/ext-stream-restore.h> +#endif + +#include <unistd.h> + +// Less than ideal +#define PA_SCACHE_ENTRY_SIZE_MAX (1024*1024*16) + +QT_BEGIN_NAMESPACE + +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_vol; + } + +private: + void prepare() + { + m_vol = 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(QLatin1String("QtPulseAudio:%1")).arg(::getpid()).toAscii().constData()); + +#if defined(Q_WS_MAEMO_5) + 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 defined(Q_WS_MAEMO_5) + 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_vol = QString(str).replace(" ","").replace("%","").mid(2).toInt(); + } + } + } +#endif + + int m_vol; + 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_retry(false), + m_muted(false), + m_playQueued(false), + m_sampleLoaded(false), + m_volume(100), + m_duration(0), + m_dataUploaded(0), + m_loopCount(1), + m_runningCount(0), + m_reply(0), + m_stream(0), + m_networkAccessManager(0) +{ +} + +QSoundEffectPrivate::~QSoundEffectPrivate() +{ + m_reply->deleteLater(); + unloadSample(); +} + +QUrl QSoundEffectPrivate::source() const +{ + return m_source; +} + +void QSoundEffectPrivate::setSource(const QUrl &url) +{ + if (url.isEmpty()) { + m_source = QUrl(); + unloadSample(); + return; + } + + m_source = url; + + if (m_networkAccessManager == 0) + m_networkAccessManager = new QNetworkAccessManager(this); + + m_stream = m_networkAccessManager->get(QNetworkRequest(m_source)); + + unloadSample(); + loadSample(); +} + +int QSoundEffectPrivate::loopCount() const +{ + return m_loopCount; +} + +void QSoundEffectPrivate::setLoopCount(int loopCount) +{ + m_loopCount = loopCount; +} + +int QSoundEffectPrivate::volume() const +{ + return m_volume; +} + +void QSoundEffectPrivate::setVolume(int volume) +{ + m_volume = volume; +} + +bool QSoundEffectPrivate::isMuted() const +{ + return m_muted; +} + +void QSoundEffectPrivate::setMuted(bool muted) +{ + m_muted = muted; +} + +void QSoundEffectPrivate::play() +{ + if (m_retry) { + m_retry = false; + setSource(m_source); + return; + } + + if (!m_sampleLoaded) { + m_playQueued = true; + return; + } + + m_runningCount += m_loopCount; + + playSample(); +} + +void QSoundEffectPrivate::decoderReady() +{ + if (m_waveDecoder->size() >= PA_SCACHE_ENTRY_SIZE_MAX) { + m_waveDecoder->deleteLater(); + qWarning("QSoundEffect(pulseaudio): Attempting to load to large a sample"); + return; + } + + if (m_name.isNull()) + m_name = QString(QLatin1String("QtPulseSample-%1-%2")).arg(::getpid()).arg(quintptr(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()); + m_pulseStream = stream; + daemon()->unlock(); +} + +void QSoundEffectPrivate::decoderError() +{ + qWarning("QSoundEffect(pulseaudio): Error decoding source"); +} + +void QSoundEffectPrivate::checkPlayTime() +{ + int elapsed = m_playbackTime.elapsed(); + + if (elapsed < m_duration) + startTimer(m_duration - elapsed); +} + +void QSoundEffectPrivate::loadSample() +{ + m_sampleLoaded = false; + m_dataUploaded = 0; + m_waveDecoder = new WaveDecoder(m_stream); + connect(m_waveDecoder, SIGNAL(formatKnown()), SLOT(decoderReady())); + connect(m_waveDecoder, SIGNAL(invalidFormat()), SLOT(decoderError())); +} + +void QSoundEffectPrivate::unloadSample() +{ + if (!m_sampleLoaded) + return; + + daemon()->lock(); + pa_context_remove_sample(daemon()->context(), m_name.constData(), NULL, NULL); + daemon()->unlock(); + + m_duration = 0; + m_dataUploaded = 0; + m_sampleLoaded = false; +} + +void QSoundEffectPrivate::uploadSample() +{ + daemon()->lock(); + + size_t bufferSize = qMin(pa_stream_writable_size(m_pulseStream), + size_t(m_waveDecoder->bytesAvailable())); + char buffer[bufferSize]; + + size_t len = 0; + while (len < (m_waveDecoder->size())) { + qint64 read = m_waveDecoder->read(buffer, qMin((int)bufferSize, + (int)(m_waveDecoder->size()-len))); + if (read > 0) { + if (pa_stream_write(m_pulseStream, buffer, size_t(read), 0, 0, PA_SEEK_RELATIVE) == 0) + len += size_t(read); + else + break; + } + } + + m_dataUploaded += len; + pa_stream_set_write_callback(m_pulseStream, NULL, NULL); + + if (m_waveDecoder->size() == m_dataUploaded) { + int err = pa_stream_finish_upload(m_pulseStream); + if(err != 0) { + qWarning("pa_stream_finish_upload() err=%d",err); + pa_stream_disconnect(m_pulseStream); + m_retry = true; + m_playQueued = false; + QMetaObject::invokeMethod(this, "play"); + daemon()->unlock(); + return; + } + m_duration = m_waveDecoder->duration(); + m_waveDecoder->deleteLater(); + m_stream->deleteLater(); + m_sampleLoaded = true; + if (m_playQueued) { + m_playQueued = false; + QMetaObject::invokeMethod(this, "play"); + } + } + daemon()->unlock(); +} + +void QSoundEffectPrivate::playSample() +{ + pa_volume_t volume = PA_VOLUME_NORM; + + daemon()->lock(); +#ifdef Q_WS_MAEMO_5 + volume = PA_VOLUME_NORM / 100 * ((daemon()->volume() + m_volume) / 2); +#endif + pa_operation_unref( + pa_context_play_sample(daemon()->context(), + m_name.constData(), + 0, + volume, + play_callback, + this) + ); + daemon()->unlock(); + + m_playbackTime.start(); +} + +void QSoundEffectPrivate::timerEvent(QTimerEvent *event) +{ + if (m_runningCount > 0) + playSample(); + + 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); + + QMetaObject::invokeMethod(self, "uploadSample", Qt::QueuedConnection); +} + +void QSoundEffectPrivate::stream_state_callback(pa_stream *s, void *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: + qWarning("QSoundEffect(pulseaudio): Error in pulse audio stream"); + break; + } +} + +void QSoundEffectPrivate::play_callback(pa_context *c, int success, void *userdata) +{ + Q_UNUSED(c); + + QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata); + + if (success == 1) { + self->m_runningCount--; + QMetaObject::invokeMethod(self, "checkPlayTime", Qt::QueuedConnection); + } +} + +QT_END_NAMESPACE |