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