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/* SPDX-License-Identifier: GPL-2.0 */
#define DTLK_MINOR 0
#define DTLK_IO_EXTENT 0x02
/* ioctl's use magic number of 0xa3 */
#define DTLK_INTERROGATE 0xa390 /* get settings from the DoubleTalk */
#define DTLK_STATUS 0xa391 /* get status from the DoubleTalk */
#define DTLK_CLEAR 0x18 /* stops speech */
#define DTLK_MAX_RETRIES (loops_per_jiffy/(10000/HZ))
/* TTS Port Status Flags */
#define TTS_READABLE 0x80 /* mask for bit which is nonzero if a
byte can be read from the TTS port */
#define TTS_SPEAKING 0x40 /* mask for SYNC bit, which is nonzero
while DoubleTalk is producing
output with TTS, PCM or CVSD
synthesizers or tone generators
(that is, all but LPC) */
#define TTS_SPEAKING2 0x20 /* mask for SYNC2 bit,
which falls to zero up to 0.4 sec
before speech stops */
#define TTS_WRITABLE 0x10 /* mask for RDY bit, which when set to
1, indicates the TTS port is ready
to accept a byte of data. The RDY
bit goes zero 2-3 usec after
writing, and goes 1 again 180-190
usec later. */
#define TTS_ALMOST_FULL 0x08 /* mask for AF bit: When set to 1,
indicates that less than 300 free
bytes are available in the TTS
input buffer. AF is always 0 in the
PCM, TGN and CVSD modes. */
#define TTS_ALMOST_EMPTY 0x04 /* mask for AE bit: When set to 1,
indicates that less than 300 bytes
of data remain in DoubleTalk's
input (TTS or PCM) buffer. AE is
always 1 in the TGN and CVSD
modes. */
/* LPC speak commands */
#define LPC_5220_NORMAL 0x60 /* 5220 format decoding table, normal rate */
#define LPC_5220_FAST 0x64 /* 5220 format decoding table, fast rate */
#define LPC_D6_NORMAL 0x20 /* D6 format decoding table, normal rate */
#define LPC_D6_FAST 0x24 /* D6 format decoding table, fast rate */
/* LPC Port Status Flags (valid only after one of the LPC
speak commands) */
#define LPC_SPEAKING 0x80 /* mask for TS bit: When set to 1,
indicates the LPC synthesizer is
producing speech.*/
#define LPC_BUFFER_LOW 0x40 /* mask for BL bit: When set to 1,
indicates that the hardware LPC
data buffer has less than 30 bytes
remaining. (Total internal buffer
size = 4096 bytes.) */
#define LPC_BUFFER_EMPTY 0x20 /* mask for BE bit: When set to 1,
indicates that the LPC data buffer
ran out of data (error condition if
TS is also 1). */
/* data returned by Interrogate command */
struct dtlk_settings
{
unsigned short serial_number; /* 0-7Fh:0-7Fh */
unsigned char rom_version[24]; /* null terminated string */
unsigned char mode; /* 0=Character; 1=Phoneme; 2=Text */
unsigned char punc_level; /* nB; 0-7 */
unsigned char formant_freq; /* nF; 0-9 */
unsigned char pitch; /* nP; 0-99 */
unsigned char speed; /* nS; 0-9 */
unsigned char volume; /* nV; 0-9 */
unsigned char tone; /* nX; 0-2 */
unsigned char expression; /* nE; 0-9 */
unsigned char ext_dict_loaded; /* 1=exception dictionary loaded */
unsigned char ext_dict_status; /* 1=exception dictionary enabled */
unsigned char free_ram; /* # pages (truncated) remaining for
text buffer */
unsigned char articulation; /* nA; 0-9 */
unsigned char reverb; /* nR; 0-9 */
unsigned char eob; /* 7Fh value indicating end of
parameter block */
unsigned char has_indexing; /* nonzero if indexing is implemented */
};