From 4bae7697257e5294721211fdd0b9bad5731f70c9 Mon Sep 17 00:00:00 2001 From: Yoann Lopes Date: Tue, 20 Sep 2016 19:28:40 +0300 Subject: PulseAudio: make code more robust Some asynchronous operations return a pa_operation pointer, which can be null if the operation fails. In some cases we were not checking that the returned object was non null, leading to some asserts being raised in pa_operation_unref. Change-Id: Iff1cc67b7f79b758fa81d79e658debb1d737b29f Reviewed-by: Christian Stromme --- src/multimedia/audio/qsoundeffect_pulse_p.cpp | 61 +++++++++++++++++++++------ 1 file changed, 47 insertions(+), 14 deletions(-) (limited to 'src/multimedia/audio') diff --git a/src/multimedia/audio/qsoundeffect_pulse_p.cpp b/src/multimedia/audio/qsoundeffect_pulse_p.cpp index 1fb10d121..5bb5119a8 100644 --- a/src/multimedia/audio/qsoundeffect_pulse_p.cpp +++ b/src/multimedia/audio/qsoundeffect_pulse_p.cpp @@ -437,7 +437,11 @@ void QSoundEffectPrivate::setSource(const QUrl &url) if (m_pulseStream && !pa_stream_is_corked(m_pulseStream)) { pa_stream_set_write_callback(m_pulseStream, 0, 0); pa_stream_set_underflow_callback(m_pulseStream, 0, 0); - pa_operation_unref(pa_stream_cork(m_pulseStream, 1, 0, 0)); + pa_operation *op = pa_stream_cork(m_pulseStream, 1, 0, 0); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to cork stream"); } setPlaying(false); @@ -619,7 +623,11 @@ void QSoundEffectPrivate::emptyStream(EmptyStreamOptions options) m_emptying = true; pa_stream_set_write_callback(m_pulseStream, 0, 0); pa_stream_set_underflow_callback(m_pulseStream, 0, 0); - pa_operation_unref(pa_stream_flush(m_pulseStream, flushCompleteCb, m_ref->getRef())); + pa_operation *op = pa_stream_flush(m_pulseStream, flushCompleteCb, m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to flush stream"); } void QSoundEffectPrivate::emptyComplete(void *stream, bool reload) @@ -631,8 +639,13 @@ void QSoundEffectPrivate::emptyComplete(void *stream, bool reload) m_emptying = false; - if ((pa_stream *)stream == m_pulseStream) - pa_operation_unref(pa_stream_cork(m_pulseStream, 1, reload ? stream_cork_callback : 0, m_ref->getRef())); + if ((pa_stream *)stream == m_pulseStream) { + pa_operation *op = pa_stream_cork(m_pulseStream, 1, reload ? stream_cork_callback : 0, m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to cork stream"); + } } void QSoundEffectPrivate::sampleReady() @@ -666,7 +679,11 @@ void QSoundEffectPrivate::sampleReady() pa_buffer_attr newBufferAttr; newBufferAttr = *bufferAttr; newBufferAttr.prebuf = m_sample->data().size(); - pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef())); + pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); } else { streamReady(); } @@ -679,12 +696,20 @@ void QSoundEffectPrivate::sampleReady() newBufferAttr.minreq = bufferAttr->tlength / 2; newBufferAttr.prebuf = -1; newBufferAttr.fragsize = -1; - pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_reset_buffer_callback, m_ref->getRef())); + pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_reset_buffer_callback, m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); } else if (bufferAttr->prebuf > uint32_t(m_sample->data().size())) { pa_buffer_attr newBufferAttr; newBufferAttr = *bufferAttr; newBufferAttr.prebuf = m_sample->data().size(); - pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef())); + pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); } else { streamReady(); } @@ -989,7 +1014,11 @@ void QSoundEffectPrivate::stream_state_callback(pa_stream *s, void *userdata) pa_buffer_attr newBufferAttr; newBufferAttr = *bufferAttr; newBufferAttr.prebuf = self->m_sample->data().size(); - pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, self->m_ref->getRef()); + pa_operation *op = pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, self->m_ref->getRef()); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); } else { QMetaObject::invokeMethod(self, "streamReady", Qt::QueuedConnection); } @@ -1026,7 +1055,7 @@ void QSoundEffectPrivate::stream_reset_buffer_callback(pa_stream *s, int success return; if (!success) - qWarning("QSoundEffect(pulseaudio): faild to reset buffer attribute"); + qWarning("QSoundEffect(pulseaudio): failed to reset buffer attribute"); #ifdef QT_PA_DEBUG qDebug() << self << "stream_reset_buffer_callback"; #endif @@ -1036,7 +1065,11 @@ void QSoundEffectPrivate::stream_reset_buffer_callback(pa_stream *s, int success pa_buffer_attr newBufferAttr; newBufferAttr = *bufferAttr; newBufferAttr.prebuf = self->m_sample->data().size(); - pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, userdata); + pa_operation *op = pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, userdata); + if (op) + pa_operation_unref(op); + else + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); } else { QMetaObject::invokeMethod(self, "streamReady", Qt::QueuedConnection); } @@ -1055,7 +1088,7 @@ void QSoundEffectPrivate::stream_adjust_prebuffer_callback(pa_stream *s, int suc return; if (!success) - qWarning("QSoundEffect(pulseaudio): faild to adjust pre-buffer attribute"); + qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute"); #ifdef QT_PA_DEBUG qDebug() << self << "stream_adjust_prebuffer_callback"; #endif @@ -1090,7 +1123,7 @@ void QSoundEffectPrivate::stream_cork_callback(pa_stream *s, int success, void * return; if (!success) - qWarning("QSoundEffect(pulseaudio): faild to stop"); + qWarning("QSoundEffect(pulseaudio): failed to stop"); #ifdef QT_PA_DEBUG qDebug() << self << "stream_cork_callback"; #endif @@ -1110,7 +1143,7 @@ void QSoundEffectPrivate::stream_flush_callback(pa_stream *s, int success, void return; if (!success) - qWarning("QSoundEffect(pulseaudio): faild to drain"); + qWarning("QSoundEffect(pulseaudio): failed to drain"); QMetaObject::invokeMethod(self, "emptyComplete", Qt::QueuedConnection, Q_ARG(void*, s), Q_ARG(bool, false)); } @@ -1128,7 +1161,7 @@ void QSoundEffectPrivate::stream_flush_reload_callback(pa_stream *s, int success return; if (!success) - qWarning("QSoundEffect(pulseaudio): faild to drain"); + qWarning("QSoundEffect(pulseaudio): failed to drain"); QMetaObject::invokeMethod(self, "emptyComplete", Qt::QueuedConnection, Q_ARG(void*, s), Q_ARG(bool, true)); } -- cgit v1.2.1