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/***************************************************************************
* Copyright (C) 2006-2012 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
extern "C"{
#include <pulse/error.h>
}
#include "outputpulseaudio.h"
OutputPulseAudio::OutputPulseAudio(QObject * parent)
: Output(parent)
{
m_connection = 0;
}
OutputPulseAudio::~OutputPulseAudio()
{
uninitialize();
}
bool OutputPulseAudio::initialize(quint32 freq, int chan, Qmmp::AudioFormat format)
{
pa_sample_spec ss;
switch (format)
{
case Qmmp::PCM_S8:
ss.format = PA_SAMPLE_U8;
break;
case Qmmp::PCM_S16LE:
ss.format = PA_SAMPLE_S16LE;
break;
case Qmmp::PCM_S24LE:
ss.format = PA_SAMPLE_S24_32LE;
break;
case Qmmp::PCM_S32LE:
ss.format = PA_SAMPLE_S32LE;
break;
default:
ss.format = PA_SAMPLE_S16LE;
}
ss.channels = chan;
ss.rate = freq;
int error;
m_connection = pa_simple_new(NULL, // Use the default server.
"Qmmp", // Our application's name.
PA_STREAM_PLAYBACK,
NULL, // Use the default device.
"Music", // Description of our stream.
&ss, // Our sample format.
NULL, // Use default channel map
NULL, // Use default buffering attributes.
&error // Error code.
);
if (!m_connection)
{
qWarning("OutputPulseAudio: pa_simple_new() failed: %s", pa_strerror(error));
return false;
}
Output::configure(freq, chan, format);
return true;
}
qint64 OutputPulseAudio::latency()
{
if (!m_connection)
return 0;
int error = 0;
qint64 delay = pa_simple_get_latency(m_connection, &error)/1000;
if (error)
{
qWarning("OutputPulseAudio: %s", pa_strerror (error));
delay = 0;
}
return delay;
}
qint64 OutputPulseAudio::writeAudio(unsigned char *data, qint64 maxSize)
{
int error;
if (!m_connection)
return -1;
int i = 0;
if ((i = pa_simple_write(m_connection, data, maxSize, &error)) < 0)
{
qWarning("OutputPulseAudio: pa_simple_write() failed: %s", pa_strerror(error));
return -1;
}
return maxSize;
}
void OutputPulseAudio::drain()
{
int error;
if (m_connection)
pa_simple_drain(m_connection, &error);
}
void OutputPulseAudio::reset()
{
int error;
if (m_connection)
pa_simple_flush(m_connection, &error);
}
void OutputPulseAudio::uninitialize()
{
if (m_connection)
{
qDebug("OutputPulseAudio: closing connection");
pa_simple_free(m_connection);
m_connection = 0;
}
}
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