www.pudn.com > VOIP(H323).rar > oomedialx.c

/*
 * Copyright (C) 2004 by Objective Systems, Inc.
 *
 * This software is furnished under an open source license and may be 
 * used and copied only in accordance with the terms of this license. 
 * The text of the license may generally be found in the root 
 * directory of this installation in the LICENSE.txt file.  It 
 * can also be viewed online at the following URL:
 *
 *   http://www.obj-sys.com/open/license.html
 *
 * Any redistributions of this file including modified versions must 
 * maintain this copyright notice.
 *
 *****************************************************************************/


#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 
#include "oomedialx.h"
#include "ooCommon.h"

int ooOpenAudioDevice()
{
   
   int sampleSize, numChannels, rate;
   ghSoundDevice = open("/dev/dsp", O_RDWR);
   if(ghSoundDevice == -1)
   {
      OOLOG2(1, "Error: Opening sound device for read/write");
      return -1;
   }
   OOLOG2(1, "Audio device open successful");
   ioctl(ghSoundDevice, SOUND_PCM_READ_BITS, &sampleSize);
   /*   sampleSize =8; */
   /*   ioctl(context->ooSoundDevice, SOUND_PCM_WRITE_BITS, &sampleSize);*/
   ioctl(ghSoundDevice, SOUND_PCM_READ_CHANNELS, &numChannels);
   ioctl(ghSoundDevice, SOUND_PCM_READ_RATE, &rate);
   int on =1;
   /*   ioctl(context->ooSoundDevice, FIONBIO, &on);*/
   OOLOG5(1, "Sampe size %d bits, channels %d, rate %d", 
          sampleSize, numChannels, rate);

   return 0;
}


int ooPlayAudioBuffer(unsigned char * buff, long size)
{
   int ret = 0;
   ret = write(ghSoundDevice, buff, size);
   return ret;
}

int ooGetMicAudioBuffer(unsigned char * buff, long size)
{
   int ret;
   ret = read(ghSoundDevice, buff, size);
   return ret;
}

int ooOpenWaveFileForRead(char * filename)
{
   ghSndFile = 0;
   ghSndFile = open(filename, O_RDONLY);
   if(ghSndFile == 0)
   {
      OOLOG2(1, "ERROR: Failed to open the raw audio file");
      return -1;
   }
   return 0;
}

int ooReadWaveFileData(char * databuf, int size)
{
   int ret = 0;
   ret = read(ghSndFile, databuf, size);
   if(ret < 0)
   {
      OOLOG2(1, "ERROR:Reading raw audio file");
      return -1;
   }
   return ret;
}

int ooCloseWaveFile()
{
   int ret = 0;
   ret = close(ghSndFile);
   return ret;
}