drivers/accessibility/speakup/speakup_dtlk.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* speakup_dtlk.h - header file for speakups DoubleTalk driver. */
   3
   4 #define SYNTH_IO_EXTENT 0x02
   5 #define SYNTH_CLEAR     0x18            /* stops speech */
   6         /* TTS Port Status Flags */
   7 #define TTS_READABLE    0x80    /* mask for bit which is nonzero if a
   8                                  * byte can be read from the TTS port
   9                                  */
  10 #define TTS_SPEAKING    0x40    /* mask for SYNC bit, which is nonzero
  11                                  * while DoubleTalk is producing
  12                                  * output with TTS, PCM or CVSD
  13                                  * synthesizers or tone generators
  14                                  * (that is, all but LPC)
  15                                  */
  16 #define TTS_SPEAKING2   0x20    /* mask for SYNC2 bit,
  17                                  * which falls to zero up to 0.4 sec
  18                                  * before speech stops
  19                                  */
  20 #define TTS_WRITABLE    0x10    /* mask for RDY bit, which when set to
  21                                  * 1, indicates the TTS port is ready
  22                                  * to accept a byte of data.  The RDY
  23                                  * bit goes zero 2-3 usec after
  24                                  * writing, and goes 1 again 180-190
  25                                  * usec later.
  26                                  */
  27 #define TTS_ALMOST_FULL 0x08    /* mask for AF bit: When set to 1,
  28                                  * indicates that less than 300 bytes
  29                                  * are available in the TTS input
  30                                  * buffer. AF is always 0 in the PCM,
  31                                  * TGN and CVSD modes.
  32                                  */
  33 #define TTS_ALMOST_EMPTY 0x04   /* mask for AE bit: When set to 1,
  34                                  * indicates that less than 300 bytes
  35                                  * are remaining in DoubleTalk's input
  36                                  * (TTS or PCM) buffer. AE is always 1
  37                                  * in the TGN and CVSD modes.
  38                                  */
  39
  40                                 /* data returned by Interrogate command */
  41 struct synth_settings {
  42         u_short serial_number;  /* 0-7Fh:0-7Fh */
  43         u_char rom_version[24]; /* null terminated string */
  44         u_char mode;            /* 0=Character; 1=Phoneme; 2=Text */
  45         u_char punc_level;      /* nB; 0-7 */
  46         u_char formant_freq;    /* nF; 0-9 */
  47         u_char pitch;           /* nP; 0-99 */
  48         u_char speed;           /* nS; 0-9 */
  49         u_char volume;          /* nV; 0-9 */
  50         u_char tone;            /* nX; 0-2 */
  51         u_char expression;      /* nE; 0-9 */
  52         u_char ext_dict_loaded; /* 1=exception dictionary loaded */
  53         u_char ext_dict_status; /* 1=exception dictionary enabled */
  54         u_char free_ram;        /* # pages (truncated) remaining for
  55                                  * text buffer
  56                                  */
  57         u_char articulation;    /* nA; 0-9 */
  58         u_char reverb;          /* nR; 0-9 */
  59         u_char eob;             /* 7Fh value indicating end of
  60                                  * parameter block
  61                                  */
  62         u_char has_indexing;    /* nonzero if indexing is implemented */
  63 };