Audio.hh

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/*

    Class for OSS audio IO operations
    Copyright (c) 1998-2002 Jussi Laako

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/


#ifndef USE_OSSLITE
#include "sys/soundcard.h"
#else
#include <sys/soundcard.h>
#endif


#ifndef AUDIO_HH
    #define AUDIO_HH

    #ifndef BUF_SIZE
        #define BUF_SIZE        4096
    #endif


    enum
    {
        AUDIO_READ = 0,
        AUDIO_WRITE = 1,
        AUDIO_DUPLEX = 2
    };


    class clAudio
    {
            int iDevH;
            int iErrorCode;
        public:
            clAudio ();
            clAudio (const char *, int *, int *, int *, int);
            ~clAudio ();
            bool Open (const char *, int *, int *, int *, int);
            void Close ();
            bool SetParams (int *, int *, int *);
            bool SetFormat (int *);
            bool SetChannels (int *);
            bool SetSampleRate (int *);
            int Read (void *, int);
            int Write (const void *, int);
            bool Sync ();
            bool Reset ();
            bool Post ();
            int GetFragmentSize ();
            bool SubDivide (int *);
            bool SetFragment (int, int);
            int GetFormats ();
            bool GetInBufInfo (audio_buf_info *);
            bool GetOutBufInfo (audio_buf_info *);
            bool GetInBufStat (count_info *);
            bool GetOutBufStat (count_info *);
            int GetCaps ();
            bool SetDuplex ();
            bool SetNonBlock ();
            bool SetSynchronous ();
            int GetTrigger ();
            bool SetTrigger (int);
            bool MapInBuffer (buffmem_desc *);
            bool MapOutBuffer (buffmem_desc *);
            int GetOutDelay ();
            #ifndef USE_OSSLITE

            bool GetErrorInfo (audio_errinfo *);
            #endif

            int GetVersion ();
            void DeIntStereo (const signed short *, signed short *, 
                signed short *, unsigned int);
            void DeIntStereo (const unsigned char *, unsigned char *, 
                unsigned char *, unsigned int);
            void IntStereo (signed short *, const signed short *,
                const signed short *, unsigned int);
            void IntStereo (unsigned char *, const unsigned char *,
                const unsigned char *, unsigned int);
            int GetHandle() { return iDevH; }
            int GetError() { return iErrorCode; }
            int GetErrno() { return iErrorCode; }
   };
   

#endif

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