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