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/***************************************************************************
streaming-job.cpp - description
-------------------
begin : Sun Sept 3 2006
copyright : (C) 2006 by Martin Witte
email : witte@kawo1.rwth-aachen.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "streaming-job.h"
#include "../../src/include/utils.h"
#include <kurl.h>
#include <kio/job.h>
StreamingJob::StreamingJob()
: QObject(),
m_URL(QString::null),
m_SoundFormat(),
m_BufferSize(65536),
m_Buffer(m_BufferSize),
m_OpenCounter(0),
m_StreamPos(0),
m_StartTime(0),
m_SkipCount(0),
m_KIO_Job(NULL),
m_capturing(false)
{
}
StreamingJob::StreamingJob(const QString &_URL, const SoundFormat &_SoundFormat, size_t _bufferSize)
: QObject(),
m_URL(_URL),
m_SoundFormat(_SoundFormat),
m_BufferSize(_bufferSize),
m_Buffer(m_BufferSize),
m_OpenCounter(0),
m_StreamPos(0),
m_StartTime(0),
m_SkipCount(0),
m_KIO_Job(NULL),
m_capturing(false)
{
}
StreamingJob::StreamingJob(const StreamingJob &c)
: QObject(),
m_URL(c.m_URL),
m_SoundFormat(c.m_SoundFormat),
m_BufferSize(c.m_BufferSize),
m_Buffer(m_BufferSize),
m_OpenCounter(0),
m_StreamPos(0),
m_StartTime(0),
m_SkipCount(0),
m_KIO_Job(NULL),
m_capturing(c.m_capturing)
{
}
StreamingJob::~StreamingJob()
{
}
void StreamingJob::setURL(const QString &url)
{
if (m_URL != url) {
m_URL = url;
delete m_KIO_Job;
m_KIO_Job = NULL;
if (!m_capturing) {
startPutJob();
} else {
startGetJob();
}
}
}
void StreamingJob::setSoundFormat(const SoundFormat &sf)
{
m_SoundFormat = sf;
}
void StreamingJob::setBufferSize(size_t buffer_size)
{
if (m_BufferSize != buffer_size) {
m_Buffer.clear();
m_Buffer.resize(m_BufferSize = buffer_size);
}
}
bool StreamingJob::startPutJob()
{
m_KIO_Job = KIO::put(m_URL, -1, true, false, false);
if (!m_KIO_Job)
return false;
m_KIO_Job->setAsyncDataEnabled(true);
connect (m_KIO_Job, SIGNAL(dataReq(KIO::Job *job, QByteArray &data)),
this, SLOT(slotWriteData (KIO::Job *job, QByteArray &data)));
connect (m_KIO_Job, SIGNAL(result(KIO::Job *)),
this, SLOT(slotIOJobResult(KIO::Job *)));
return true;
}
bool StreamingJob::startPlayback()
{
if (!m_OpenCounter) {
m_Buffer.clear();
m_OpenCounter = 1;
if (!startPutJob())
return false;
m_StartTime = time(NULL);
m_StreamPos = 0;
if (m_KIO_Job->error()) {
emit logStreamError(m_URL, m_KIO_Job->errorString());
}
return m_KIO_Job->error() == 0;
}
else {
return true;
}
}
bool StreamingJob::stopPlayback()
{
if (m_OpenCounter) {
if (!--m_OpenCounter) {
delete m_KIO_Job;
m_KIO_Job = NULL;
}
}
return true;
}
bool StreamingJob::startGetJob()
{
m_KIO_Job = KIO::get(m_URL, false, false);
if (!m_KIO_Job)
return false;
m_KIO_Job->setAsyncDataEnabled(true);
connect (m_KIO_Job, SIGNAL(data(KIO::Job *, const QByteArray &)),
this, SLOT(slotReadData(KIO::Job *, const QByteArray &)));
connect (m_KIO_Job, SIGNAL(result(KIO::Job *)),
this, SLOT(slotIOJobResult(KIO::Job *)));
return true;
}
bool StreamingJob::startCapture(const SoundFormat &/*proposed_format*/,
SoundFormat &real_format,
bool /*force_format*/)
{
if (!m_OpenCounter) {
m_capturing = true;
m_Buffer.clear();
if (!startGetJob())
return false;
m_StartTime = time(NULL);
m_StreamPos = 0;
if (m_KIO_Job->error()) {
emit logStreamError(m_URL, m_KIO_Job->errorString());
}
return m_KIO_Job->error() == 0;
}
++m_OpenCounter;
real_format = m_SoundFormat;
return true;
}
bool StreamingJob::stopCapture()
{
if (m_OpenCounter) {
if (!--m_OpenCounter) {
delete m_KIO_Job;
m_KIO_Job = NULL;
}
}
return true;
}
void StreamingJob::slotReadData (KIO::Job */*job*/, const QByteArray &data)
{
size_t free = m_Buffer.getFreeSize();
if (free < data.size()) {
m_SkipCount += data.size() - free;
emit logStreamWarning(m_URL, i18n("skipped %1 bytes").arg(data.size() - free));
}
else {
free = data.size();
}
m_Buffer.addData(data.data(), free);
m_StreamPos += free;
if (m_Buffer.getFreeSize() < data.size()) {
m_KIO_Job->suspend();
}
}
void StreamingJob::slotWriteData (KIO::Job */*job*/, QByteArray &)
{
size_t size = m_Buffer.getFillSize();
if (size) {
char *buf = new char [size];
size = m_Buffer.takeData(buf, size);
QByteArray data;
data.assign(buf, size);
m_KIO_Job->sendAsyncData(data);
m_StreamPos += size;
}
else {
// does a warning really make sense here?
//emit logStreamWarning(m_URL, i18n("buffer underrun"));
m_SkipCount++;
}
}
void StreamingJob::playData(const char *data, size_t size, size_t &consumed_size)
{
size_t free = m_Buffer.getFreeSize();
consumed_size = (consumed_size == SIZE_T_DONT_CARE) ? free : min(consumed_size, free);
if (free > size) {
free = size;
}
m_Buffer.addData(data, free);
}
bool StreamingJob::hasRecordedData() const
{
return m_Buffer.getFillSize() > m_Buffer.getSize() / 3;
}
void StreamingJob::lockData(const char *&data, size_t &size, SoundMetaData &meta_data)
{
data = m_Buffer.getData(size);
time_t cur_time = time(NULL);
meta_data = SoundMetaData(m_StreamPos, cur_time - m_StartTime, cur_time, m_URL);
}
void StreamingJob::removeData(size_t size)
{
m_Buffer.removeData(size);
if (m_Buffer.getFreeSize() > m_Buffer.getSize() / 2) {
m_KIO_Job->resume();
}
}
void StreamingJob::slotIOJobResult (KIO::Job *job)
{
if (job && job->error()) {
emit logStreamError(m_URL, job->errorString());
}
}
#include "streaming-job.moc"
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