wmmixer/mixctl.h

   1 // mixctl.h - MixCtl class provides control of audio mixer functions
   2 //
   3 // Release 1.5
   4 // Copyright (C) 1998  Sam Hawker <shawkie@geocities.com>
   5 // Copyright (C) 2002 Gordon Fraser <gordon@debian.org>
   6 // This software comes with ABSOLUTELY NO WARRANTY
   7 // This software is free software, and you are welcome to redistribute it
   8 // under certain conditions
   9 // See the COPYING file for details.
  10
  11 #ifndef __mixctl_h__
  12 #define __mixctl_h__
  13
  14
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <sys/ioctl.h>
  18 #include <sys/types.h>
  19 #include <sys/stat.h>
  20 #include <fcntl.h>
  21 #include <unistd.h>
  22 #include <string.h>
  23 #ifdef __NetBSD__
  24 #include <soundcard.h>
  25 #endif
  26 #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
  27 #include <sys/soundcard.h>
  28 #endif
  29 #ifdef __linux__
  30 #include <linux/soundcard.h>
  31 #endif
  32 #ifdef __GNU__  // Hurd
  33 #include <sys/soundcard.h>
  34 #endif
  35
  36 #include "exception.h"
  37
  38 //----------------------------------------------------------------------
  39 struct _MixerDevice_{
  40   bool support;
  41   bool stereo;
  42   bool recsrc;
  43   bool records;
  44   char *name;
  45   char *label;
  46   int value;
  47   int mask;
  48   int muted;
  49 };
  50
  51 typedef struct _MixerDevice_ MixerDevice;
  52
  53 //----------------------------------------------------------------------
  54 class MixCtl
  55 {
  56  protected:
  57   int mixfd;
  58   int mixfdopen;
  59   char* device_;
  60   int muted_;
  61
  62   unsigned num_devices_;       // maximum number of devices
  63   int devmask;         // supported devices
  64   int stmask;          // stereo devices
  65   int recmask;         // devices which can be recorded from
  66   int caps;            // capabilities
  67   int recsrc;          // devices which are being recorded from
  68   int modify_counter;
  69   MixerDevice* mixer_devices_;
  70
  71   void doStatus();
  72
  73  public:
  74   MixCtl(char *dname) throw(MixerDeviceException);
  75   virtual ~MixCtl();
  76   int readVol(int, bool);
  77   int readLeft(int);
  78   int readRight(int);
  79   void writeVol(int);
  80
  81   void setVol(int, int);
  82   void setBoth(int, int, int);
  83   void setLeft(int, int);
  84   void setRight(int, int);
  85
  86   bool readRec(int, bool);
  87   void writeRec();
  88   void setRec(int, bool);
  89
  90   char *getDevName();
  91   unsigned getNrDevices();
  92   int getCapabilities();
  93   bool getSupport(int);
  94   bool getStereo(int);
  95   bool getRecords(int);
  96   char *getName(int);
  97   char *getLabel(int);
  98   bool hasChanged();
  99
 100   bool isMuted(int);
 101   void mute(int);
 102   void unmute(int);
 103 };
 104
 105 #endif // __mixctl_h__
 106