AudioA2.hh

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/*

    ALSA audio I/O
    Copyright (C) 2000-2002 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

*/


#ifdef USE_ALSA09


#include <sys/types.h>
#include <alsa/asoundlib.h>


#ifndef AUDIOA_HH
    #define AUDIOA_HH

    #define AA_MODE_PLAY            SND_PCM_STREAM_PLAYBACK
    #define AA_MODE_RECORD          SND_PCM_STREAM_CAPTURE


    class clAudioA2
    {
            unsigned int uiActRate;
            unsigned int uiActBufSize;
            unsigned int uiActFragSize;
            unsigned int uiActFragCount;
            size_t uiFrameSize;
            snd_output_t *sndoutErr;
            snd_pcm_t *sndpcmPcm;
            snd_pcm_info_t *sndpcmInfo;
            snd_pcm_hw_params_t *sndpcmHwParams;
            snd_pcm_sw_params_t *sndpcmSwParams;
        public:
            clAudioA2 ();
            ~clAudioA2 ();
            /* - Internal stuff - */
            snd_pcm_t *GetPcmHandle ()
                {
                    return sndpcmPcm;
                }
            /* - Card specifics - */
            bool CardOpen (int);
            void CardClose ();
            const char *CardGetName (int);
            const char *CardGetLongName (int);
            int CardGetChannelCount ();
            /* - Device specifics - */
            bool PcmOpen (const char *, snd_pcm_stream_t eMode);
            void PcmClose ();
            bool PcmSetSetup (int, int, int, int, int);
            int PcmGetChannels ();
            int PcmGetSampleRate ();
            int PcmGetBits ();
            int PcmGetBufferSize ();
            int PcmGetFragmentSize ();
            int PcmGetFragmentCount ();
            int PcmGetStatus ();
            const char *PcmGetStatusStr (int);
            const char *PcmGetName ();
            bool PcmLink (clAudioA2 &);
            bool PcmUnlink ();
            bool PcmPrepare ();
            bool PcmStart ();
            bool PcmReset ();
            bool PcmDrain ();
            int PcmRead (void *, int);
            int PcmWrite (const void *, int);
    };

#endif

#endif  // USE_ALSA09

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