linux/include/linux/dtlk.h
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   1#define DTLK_MINOR      0
   2#define DTLK_IO_EXTENT  0x02
   3
   4        /* ioctl's use magic number of 0xa3 */
   5#define DTLK_INTERROGATE 0xa390 /* get settings from the DoubleTalk */
   6#define DTLK_STATUS 0xa391      /* get status from the DoubleTalk */
   7
   8
   9#define DTLK_CLEAR 0x18         /* stops speech */
  10
  11#define DTLK_MAX_RETRIES (loops_per_jiffy/(10000/HZ))
  12
  13        /* TTS Port Status Flags */
  14#define TTS_READABLE     0x80   /* mask for bit which is nonzero if a
  15                                   byte can be read from the TTS port */
  16#define TTS_SPEAKING     0x40   /* mask for SYNC bit, which is nonzero
  17                                   while DoubleTalk is producing
  18                                   output with TTS, PCM or CVSD
  19                                   synthesizers or tone generators
  20                                   (that is, all but LPC) */
  21#define TTS_SPEAKING2    0x20   /* mask for SYNC2 bit,
  22                                   which falls to zero up to 0.4 sec
  23                                   before speech stops */
  24#define TTS_WRITABLE     0x10   /* mask for RDY bit, which when set to
  25                                   1, indicates the TTS port is ready
  26                                   to accept a byte of data.  The RDY
  27                                   bit goes zero 2-3 usec after
  28                                   writing, and goes 1 again 180-190
  29                                   usec later. */
  30#define TTS_ALMOST_FULL  0x08   /* mask for AF bit: When set to 1,
  31                                   indicates that less than 300 free
  32                                   bytes are available in the TTS
  33                                   input buffer. AF is always 0 in the
  34                                   PCM, TGN and CVSD modes. */
  35#define TTS_ALMOST_EMPTY 0x04   /* mask for AE bit: When set to 1,
  36                                   indicates that less than 300 bytes
  37                                   of data remain in DoubleTalk's
  38                                   input (TTS or PCM) buffer. AE is
  39                                   always 1 in the TGN and CVSD
  40                                   modes. */
  41
  42        /* LPC speak commands */
  43#define LPC_5220_NORMAL 0x60    /* 5220 format decoding table, normal rate */
  44#define LPC_5220_FAST 0x64      /* 5220 format decoding table, fast rate */
  45#define LPC_D6_NORMAL 0x20      /* D6 format decoding table, normal rate */
  46#define LPC_D6_FAST 0x24        /* D6 format decoding table, fast rate */
  47
  48        /* LPC Port Status Flags (valid only after one of the LPC
  49           speak commands) */
  50#define LPC_SPEAKING     0x80   /* mask for TS bit: When set to 1,
  51                                   indicates the LPC synthesizer is
  52                                   producing speech.*/
  53#define LPC_BUFFER_LOW   0x40   /* mask for BL bit: When set to 1,
  54                                   indicates that the hardware LPC
  55                                   data buffer has less than 30 bytes
  56                                   remaining. (Total internal buffer
  57                                   size = 4096 bytes.) */
  58#define LPC_BUFFER_EMPTY 0x20   /* mask for BE bit: When set to 1,
  59                                   indicates that the LPC data buffer
  60                                   ran out of data (error condition if
  61                                   TS is also 1).  */
  62
  63                                /* data returned by Interrogate command */
  64struct dtlk_settings
  65{
  66  unsigned short serial_number; /* 0-7Fh:0-7Fh */
  67  unsigned char rom_version[24]; /* null terminated string */
  68  unsigned char mode;           /* 0=Character; 1=Phoneme; 2=Text */
  69  unsigned char punc_level;     /* nB; 0-7 */
  70  unsigned char formant_freq;   /* nF; 0-9 */
  71  unsigned char pitch;          /* nP; 0-99 */
  72  unsigned char speed;          /* nS; 0-9 */
  73  unsigned char volume;         /* nV; 0-9 */
  74  unsigned char tone;           /* nX; 0-2 */
  75  unsigned char expression;     /* nE; 0-9 */
  76  unsigned char ext_dict_loaded; /* 1=exception dictionary loaded */
  77  unsigned char ext_dict_status; /* 1=exception dictionary enabled */
  78  unsigned char free_ram;       /* # pages (truncated) remaining for
  79                                   text buffer */
  80  unsigned char articulation;   /* nA; 0-9 */
  81  unsigned char reverb;         /* nR; 0-9 */
  82  unsigned char eob;            /* 7Fh value indicating end of
  83                                   parameter block */
  84  unsigned char has_indexing;   /* nonzero if indexing is implemented */
  85};
  86
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