xref: /linux/include/linux/dtlk.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #define DTLK_MINOR	0
3 #define DTLK_IO_EXTENT	0x02
4 
5 	/* ioctl's use magic number of 0xa3 */
6 #define DTLK_INTERROGATE 0xa390	/* get settings from the DoubleTalk */
7 #define DTLK_STATUS 0xa391	/* get status from the DoubleTalk */
8 
9 
10 #define DTLK_CLEAR 0x18		/* stops speech */
11 
12 #define DTLK_MAX_RETRIES (loops_per_jiffy/(10000/HZ))
13 
14 	/* TTS Port Status Flags */
15 #define TTS_READABLE     0x80	/* mask for bit which is nonzero if a
16 				   byte can be read from the TTS port */
17 #define TTS_SPEAKING     0x40	/* mask for SYNC bit, which is nonzero
18 				   while DoubleTalk is producing
19 				   output with TTS, PCM or CVSD
20 				   synthesizers or tone generators
21 				   (that is, all but LPC) */
22 #define TTS_SPEAKING2    0x20	/* mask for SYNC2 bit,
23 				   which falls to zero up to 0.4 sec
24 				   before speech stops */
25 #define TTS_WRITABLE     0x10	/* mask for RDY bit, which when set to
26              			   1, indicates the TTS port is ready
27              			   to accept a byte of data.  The RDY
28              			   bit goes zero 2-3 usec after
29              			   writing, and goes 1 again 180-190
30              			   usec later. */
31 #define TTS_ALMOST_FULL  0x08	/* mask for AF bit: When set to 1,
32 				   indicates that less than 300 free
33 				   bytes are available in the TTS
34 				   input buffer. AF is always 0 in the
35 				   PCM, TGN and CVSD modes. */
36 #define TTS_ALMOST_EMPTY 0x04	/* mask for AE bit: When set to 1,
37 				   indicates that less than 300 bytes
38 				   of data remain in DoubleTalk's
39 				   input (TTS or PCM) buffer. AE is
40 				   always 1 in the TGN and CVSD
41 				   modes. */
42 
43 	/* LPC speak commands */
44 #define LPC_5220_NORMAL 0x60	/* 5220 format decoding table, normal rate */
45 #define LPC_5220_FAST 0x64	/* 5220 format decoding table, fast rate */
46 #define LPC_D6_NORMAL 0x20	/* D6 format decoding table, normal rate */
47 #define LPC_D6_FAST 0x24	/* D6 format decoding table, fast rate */
48 
49 	/* LPC Port Status Flags (valid only after one of the LPC
50            speak commands) */
51 #define LPC_SPEAKING     0x80	/* mask for TS bit: When set to 1,
52 				   indicates the LPC synthesizer is
53 				   producing speech.*/
54 #define LPC_BUFFER_LOW   0x40	/* mask for BL bit: When set to 1,
55 				   indicates that the hardware LPC
56 				   data buffer has less than 30 bytes
57 				   remaining. (Total internal buffer
58 				   size = 4096 bytes.) */
59 #define LPC_BUFFER_EMPTY 0x20	/* mask for BE bit: When set to 1,
60 				   indicates that the LPC data buffer
61 				   ran out of data (error condition if
62 				   TS is also 1).  */
63 
64 				/* data returned by Interrogate command */
65 struct dtlk_settings
66 {
67   unsigned short serial_number;	/* 0-7Fh:0-7Fh */
68   unsigned char rom_version[24]; /* null terminated string */
69   unsigned char mode;		/* 0=Character; 1=Phoneme; 2=Text */
70   unsigned char punc_level;	/* nB; 0-7 */
71   unsigned char formant_freq;	/* nF; 0-9 */
72   unsigned char pitch;		/* nP; 0-99 */
73   unsigned char speed;		/* nS; 0-9 */
74   unsigned char volume;		/* nV; 0-9 */
75   unsigned char tone;		/* nX; 0-2 */
76   unsigned char expression;	/* nE; 0-9 */
77   unsigned char ext_dict_loaded; /* 1=exception dictionary loaded */
78   unsigned char ext_dict_status; /* 1=exception dictionary enabled */
79   unsigned char free_ram;	/* # pages (truncated) remaining for
80                                    text buffer */
81   unsigned char articulation;	/* nA; 0-9 */
82   unsigned char reverb;		/* nR; 0-9 */
83   unsigned char eob;		/* 7Fh value indicating end of
84                                    parameter block */
85   unsigned char has_indexing;	/* nonzero if indexing is implemented */
86 };
87