playqueue.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
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static const char* const PlayQueue_cxx_Version =
    "$Id: PlayQueue.cxx,v 1.2.2.1 2003/02/06 06:55:27 sprajpat Exp $";

#include "global.h"
#include "PlayQueue.h"
#include <unistd.h>
#include <fcntl.h>
#include "cpLog.h"
#include <errno.h>


PlayQueue::PlayQueue()
{
    m_iFd = 0;
    m_bActive = false;
}


PlayQueue::~PlayQueue()
{
    m_bActive = false;
    if(m_iFd) ::sf_close(m_iFd);
}


void PlayQueue::add(const string & fileName)
{
    cpLog(LOG_DEBUG, "added %s to play queue", fileName.c_str());
    m_xFileQueue.push(fileName);
}


int PlayQueue::start()
{
    if( m_bActive )
    {
	return true;
    }
    m_bActive = true;

    while ( !m_xFileQueue.empty() )
    {
        SF_INFO info;
        string fileName = m_xFileQueue.front();
        cpLog(LOG_DEBUG, "Opening: %s" , fileName.c_str());
        m_xFileQueue.pop();
	cpLog(LOG_DEBUG,"Next file in queue %s",fileName.c_str());
        m_iFd = ::sf_open_read(fileName.c_str(), &info);
	if ( m_iFd != NULL )
	{
            cpLog(LOG_DEBUG, "Opened: %s" , fileName.c_str());
	    return m_bActive;
	}
	else
	{
	    cpLog(LOG_ERR, "cannot open file %s: %d", fileName.c_str(), errno);
	    m_bActive = false;
	    return false;
	}
    }
    cpLog(LOG_DEBUG, "finished playing queue");
    m_bActive = false;
    return false;
}


int PlayQueue::getData(void *buffer, int size)
{
    if ( !m_bActive ) 
    {
	//cpLog(LOG_DEBUG, "tried to get data when not playing");
	return true;
    }

    int rc = ::sf_read_raw(m_iFd, buffer, size);
    char errBuf[256];
    sf_error_str(m_iFd, errBuf, 256);
    if ( rc != size )
    {
	cpLog(LOG_DEBUG, "finished reading sound file");
        if ( ((char *)buffer)[rc] == 0 )
	{
	    ((char *)buffer)[rc] = 0x7F;
	}
        memset((char *)buffer + rc, 0x7F, size - rc);
        ::sf_close(m_iFd);
        m_iFd = 0;
	m_bActive=false;
        return start();
    }

    return true;
}


void PlayQueue::stop()
{
    m_bActive = false;
    while ( !m_xFileQueue.empty() ) 
    {
	m_xFileQueue.pop();
    }
}


/* Local Variables: */
/* c-file-style:"stroustrup" */
/* c-basic-offset:4 */
/* c-file-offsets:((inclass . ++)) */
/* indent-tabs-mode:nil */
/* End: */