/* SPDX-License-Identifier: GPL-2.0 */
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/* speakup_dtlk.h - header file for speakups DoubleTalk driver. */
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#define SYNTH_IO_EXTENT 0x02
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#define SYNTH_CLEAR 0x18 /* stops speech */
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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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*/
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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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*/
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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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*/
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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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*/
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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 bytes
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* are available in the TTS input
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* buffer. AF is always 0 in the PCM,
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* TGN and CVSD modes.
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*/
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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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* are remaining in DoubleTalk's input
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* (TTS or PCM) buffer. AE is always 1
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* in the TGN and CVSD modes.
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*/
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/* data returned by Interrogate command */
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struct synth_settings {
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u_short serial_number; /* 0-7Fh:0-7Fh */
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u_char rom_version[24]; /* null terminated string */
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u_char mode; /* 0=Character; 1=Phoneme; 2=Text */
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u_char punc_level; /* nB; 0-7 */
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u_char formant_freq; /* nF; 0-9 */
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u_char pitch; /* nP; 0-99 */
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u_char speed; /* nS; 0-9 */
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u_char volume; /* nV; 0-9 */
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u_char tone; /* nX; 0-2 */
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u_char expression; /* nE; 0-9 */
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u_char ext_dict_loaded; /* 1=exception dictionary loaded */
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u_char ext_dict_status; /* 1=exception dictionary enabled */
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u_char free_ram; /* # pages (truncated) remaining for
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* text buffer
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*/
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u_char articulation; /* nA; 0-9 */
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u_char reverb; /* nR; 0-9 */
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u_char eob; /* 7Fh value indicating end of
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* parameter block
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*/
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u_char has_indexing; /* nonzero if indexing is implemented */
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};
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