/[svn]/linuxsampler/trunk/src/audioio.h
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revision 12 by schoenebeck, Wed Nov 5 14:47:10 2003 UTC revision 13 by schoenebeck, Fri Nov 21 15:07:23 2003 UTC
# Line 25  Line 25 
25    
26  // We only support Alsa at the moment  // We only support Alsa at the moment
27    
28    #include <string>
29  #include <stdio.h>  #include <stdio.h>
30  #include <stdlib.h>  #include <stdlib.h>
31  #include <string.h>  #include <string.h>
# Line 33  Line 34 
34  #include <sched.h>  #include <sched.h>
35  #include <sys/mman.h>  #include <sys/mman.h>
36    
37    #include "global.h"
38    
39  class AudioIO {  class AudioIO {
40      public:      public:
41          int16_t* pOutputBuffer;    ///< This is the buffer where the final mix will be copied to and send to the sound card          bool     Initialized;
42            int16_t* pOutputBuffer;  ///< This is the buffer where the final mix will be copied to and send to the sound card
43          uint     Channels;          uint     Channels;
44          uint     Samplerate;          uint     Samplerate;
45          uint     Fragments;          uint     Fragments;
46          uint     FragmentSize;     ///< in sample points          uint     FragmentSize;   ///< in sample points
47    
48          AudioIO();          AudioIO();
49         ~AudioIO();         ~AudioIO();
# Line 47  class AudioIO { Line 51  class AudioIO {
51          int  Output();          int  Output();
52          void Close();          void Close();
53      private:      private:
54          snd_pcm_t* pcm_handle; ///< Handle for the PCM device          typedef std::string  String;
55    
56            String               pcm_name;    ///< Name of the PCM device, like plughw:0,0 the first number is the number of the soundcard, the second number is the number of the device.
57            snd_pcm_t*           pcm_handle;  ///< Handle for the PCM device
58            snd_pcm_stream_t     stream;
59            snd_pcm_hw_params_t* hwparams;    ///< This structure contains information about the hardware and can be used to specify the configuration to be used for the PCM stream.
60            snd_pcm_sw_params_t* swparams;
61    
62            bool HardwareParametersSupported(uint channels, int samplerate, uint numfragments, uint fragmentsize);
63  };  };
64    
65  #endif // __AUDIO_H__  #endif // __AUDIO_H__
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