/* ====================================================================
 * The Vovida Software License, Version 1.0
 *
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact vocal@vovida.org.
 *
 * 4. Products derived from this software may not be called "VOCAL", nor 
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * ====================================================================
 *
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

//static const char* const phoneJack_cxx_Version =
//    "$Id: soundcardTest.cxx,v 1.1 2001/03/09 01:40:55 kimle Exp $";
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/soundcard.h>

//#include "RtpSession.hxx"
//#include "cpLog.h"

#define NETWORK_RTP_RATE 160

static int deviceFD;
//RtpSession* audioStack;
//RtpPacket* outRtpPkt;
//RtpPacket* inRtpPkt;

//RtpPayloadType apiCodec;
static int apiRate;
audio_buf_info info;
void *iPtr,*oPtr;

int openAudioHardware( const char* pname ,int samplingRate)
{
    //cerr <<"Opening audio hardware\n";

    int audioFD,min_size,blk_size=1024,cond,i,p;
    int ioctlParam;
    

    // open audio device
    if( ( audioFD = open( pname, O_RDWR, 0 ) ) == -1 )
    {
        perror("Open failed:");
        return -1;
    }
#if 0
	ioctl(audioFD,SNDCTL_DSP_GETBLKSIZE,&min_size);
	if(min_size > blk_size)
	{
		cond=1;
		p=min_size/blk_size;
		while(cond)
		{
			i=ioctl(audioFD,SNDCTL_DSP_SUBDIVIDE,&p);
			if((i==0)||(p==1)) cond=0;
			else p=p/2;
		}
	}
	ioctl(audioFD,SNDCTL_DSP_GETBLKSIZE,&min_size);
	printf("SNDCTL_DSP_GETBLKSIZE(size)=%d\n",min_size);
#endif	
    // query audio formats
    ioctlParam = 16;
    if( ioctl( audioFD, SNDCTL_DSP_SAMPLESIZE, &ioctlParam ) == -1 )
    {
        perror("SNDCTL_DSP_SAMPLESIZE");
        return -1;
    }
    ioctlParam = -1;
    if( ioctl( audioFD, SNDCTL_DSP_GETFMTS, &ioctlParam ) == -1 )
    {
        perror("SNDCTL_DSP_GETFMTS");
        return -1;
    }

    // choose codec
    if( ioctlParam & AFMT_MU_LAW )
    {
        //cpLog(LOG_DEBUG,"Setting sound card to ulaw");
        ioctlParam = AFMT_MU_LAW;
        //apiCodec = rtpPayloadPCMU;
        //apiRate = 160;
    }
    else if( ioctlParam & AFMT_S16_LE )
    {
        //cpLog(LOG_DEBUG,"Setting sound card to linear16");
        ioctlParam = AFMT_S16_LE;
        //apiCodec = rtpPayloadL16_mono;
        //apiRate = 320;
    }
    else
    {
        //cpLog(LOG_ERR,"Sound card doesn't support any known encodings");
        printf("Sound card supports the following (Mask:%d:)\n", ioctlParam);
        if( ioctlParam & AFMT_MU_LAW )     printf("  AFMT_MU_LAW\n");
        if( ioctlParam & AFMT_A_LAW )      printf("  AFMT_A_LAW\n");
        if( ioctlParam & AFMT_IMA_ADPCM )  printf("  AFMT_IMA_ADPCM\n");
        if( ioctlParam & AFMT_U8 )         printf("  AFMT_U8\n");
        if( ioctlParam & AFMT_S16_LE )     printf("  AFMT_S16_LE\n");
        if( ioctlParam & AFMT_S16_BE )     printf("  AFMT_S16_BE\n");
        if( ioctlParam & AFMT_S8 )         printf("  AFMT_S8\n");
        if( ioctlParam & AFMT_U16_LE )     printf("  AFMT_U16_LE\n");
        if( ioctlParam & AFMT_U16_BE )     printf("  AFMT_U16_BE\n");
        if( ioctlParam & AFMT_MPEG )       printf("  AFMT_MPEG\n");
        return -1;
    }
    //Setting Duplex
    if( ioctl( audioFD, SNDCTL_DSP_SETDUPLEX,0 ) == -1 )
    {
        perror("SNDCTL_DSP_SETDUPLEX");
        return -1;
    }
    
    // setting audio device parameters
    int ioctlParamSave = ioctlParam;
    if( ioctl( audioFD, SNDCTL_DSP_SETFMT, &ioctlParam ) == -1 )
    {
        perror("SNDCTL_DSP_SETFMT");
        return -1;
    }
    if( ioctlParam != ioctlParamSave )
    {
        perror("Failed to set DSP Format, sound card returned format");
        return -1;
    }
    ioctlParam = 1;
    if( ioctl( audioFD, SNDCTL_DSP_CHANNELS, &ioctlParam ) == -1 )
    {
        perror("SNDCTL_DSP_CHANNELS");
        return -1;
    }
    if( ioctlParam != 1)
    {
        perror("Failed to set channels");
        return -1;
    }

    ioctlParam = samplingRate;
    if( ioctl( audioFD, SNDCTL_DSP_SPEED, &ioctlParam ) == -1 )
    {
        perror("SNDCTL_DSP_SPEED");
        return -1;
    }
    if( ioctlParam != samplingRate )
    {
        perror("Failed to set sample rate");
        return -1;
    }
#if 0
    ioctl(audioFD,SNDCTL_DSP_GETISPACE,&info);
    printf("ISpace\nNo of Fragments:%d,\nTotal fragments allocated for buffering:%d,\nFragment size:%d,\nTotal Available Bytes %d \n\n",info.fragments,info.fragstotal,info.fragsize,info.bytes);
    ioctl(audioFD,SNDCTL_DSP_GETOSPACE,&info);
    printf("OSpace\nNo of Fragments:%d,\nTotal fragments allocated for buffering:%d,\nFragment size:%d,\nTotal Available Bytes %d \n\n",info.fragments,info.fragstotal,info.fragsize,info.bytes);

    //ioctl(audioFD,SNDCTL_DSP_GETOPTR,oPtr);
    //ioctl(audioFD,SNDCTL_DSP_GETOPTR,iPtr);
#endif

    return audioFD;
}


int closeAudioHardware( int audioFD )
{
    //cerr <<"Closing audio hardware\n";

    if( ioctl( audioFD, SNDCTL_DSP_RESET, 0 ) == -1 )
    {
        perror("SNDCTL_DSP_RESET");
    }

    close( audioFD );

    return 1;
}