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12#include <linux/unistd.h>
13#include <linux/miscdevice.h>
14#include <linux/poll.h>
15
16
17#include <linux/sched/signal.h>
18
19#include "spk_priv.h"
20#include "speakup.h"
21
22#define DRV_VERSION "2.6"
23#define PROCSPEECH 0x0d
24#define CLEAR_SYNTH 0x18
25
26static int softsynth_probe(struct spk_synth *synth);
27static void softsynth_release(struct spk_synth *synth);
28static int softsynth_is_alive(struct spk_synth *synth);
29static unsigned char get_index(struct spk_synth *synth);
30
31static struct miscdevice synth_device, synthu_device;
32static int init_pos;
33static int misc_registered;
34
35static struct var_t vars[] = {
36 { CAPS_START, .u.s = {"\x01+3p" } },
37 { CAPS_STOP, .u.s = {"\x01-3p" } },
38 { PAUSE, .u.n = {"\x01P" } },
39 { RATE, .u.n = {"\x01%ds", 2, 0, 9, 0, 0, NULL } },
40 { PITCH, .u.n = {"\x01%dp", 5, 0, 9, 0, 0, NULL } },
41 { INFLECTION, .u.n = {"\x01%dr", 5, 0, 9, 0, 0, NULL } },
42 { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
43 { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
44 { PUNCT, .u.n = {"\x01%db", 0, 0, 2, 0, 0, NULL } },
45 { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
46 { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
47 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
48 V_LAST_VAR
49};
50
51
52
53static struct kobj_attribute caps_start_attribute =
54 __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
55static struct kobj_attribute caps_stop_attribute =
56 __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
57static struct kobj_attribute freq_attribute =
58 __ATTR(freq, 0644, spk_var_show, spk_var_store);
59static struct kobj_attribute pitch_attribute =
60 __ATTR(pitch, 0644, spk_var_show, spk_var_store);
61static struct kobj_attribute inflection_attribute =
62 __ATTR(inflection, 0644, spk_var_show, spk_var_store);
63static struct kobj_attribute punct_attribute =
64 __ATTR(punct, 0644, spk_var_show, spk_var_store);
65static struct kobj_attribute rate_attribute =
66 __ATTR(rate, 0644, spk_var_show, spk_var_store);
67static struct kobj_attribute tone_attribute =
68 __ATTR(tone, 0644, spk_var_show, spk_var_store);
69static struct kobj_attribute voice_attribute =
70 __ATTR(voice, 0644, spk_var_show, spk_var_store);
71static struct kobj_attribute vol_attribute =
72 __ATTR(vol, 0644, spk_var_show, spk_var_store);
73
74
75
76
77
78
79
80
81static struct kobj_attribute delay_time_attribute =
82 __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
83static struct kobj_attribute direct_attribute =
84 __ATTR(direct, 0644, spk_var_show, spk_var_store);
85static struct kobj_attribute full_time_attribute =
86 __ATTR(full_time, 0644, spk_var_show, spk_var_store);
87static struct kobj_attribute jiffy_delta_attribute =
88 __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
89static struct kobj_attribute trigger_time_attribute =
90 __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
91
92
93
94
95
96static struct attribute *synth_attrs[] = {
97 &caps_start_attribute.attr,
98 &caps_stop_attribute.attr,
99 &freq_attribute.attr,
100
101 &pitch_attribute.attr,
102 &inflection_attribute.attr,
103 &punct_attribute.attr,
104 &rate_attribute.attr,
105 &tone_attribute.attr,
106 &voice_attribute.attr,
107 &vol_attribute.attr,
108 &delay_time_attribute.attr,
109 &direct_attribute.attr,
110 &full_time_attribute.attr,
111 &jiffy_delta_attribute.attr,
112 &trigger_time_attribute.attr,
113 NULL,
114};
115
116static struct spk_synth synth_soft = {
117 .name = "soft",
118 .version = DRV_VERSION,
119 .long_name = "software synth",
120 .init = "\01@\x01\x31y\n",
121 .procspeech = PROCSPEECH,
122 .delay = 0,
123 .trigger = 0,
124 .jiffies = 0,
125 .full = 0,
126 .startup = SYNTH_START,
127 .checkval = SYNTH_CHECK,
128 .vars = vars,
129 .io_ops = NULL,
130 .probe = softsynth_probe,
131 .release = softsynth_release,
132 .synth_immediate = NULL,
133 .catch_up = NULL,
134 .flush = NULL,
135 .is_alive = softsynth_is_alive,
136 .synth_adjust = NULL,
137 .read_buff_add = NULL,
138 .get_index = get_index,
139 .indexing = {
140 .command = "\x01%di",
141 .lowindex = 1,
142 .highindex = 5,
143 .currindex = 1,
144 },
145 .attributes = {
146 .attrs = synth_attrs,
147 .name = "soft",
148 },
149};
150
151static char *get_initstring(void)
152{
153 static char buf[40];
154 char *cp;
155 struct var_t *var;
156 size_t len;
157 size_t n;
158
159 memset(buf, 0, sizeof(buf));
160 cp = buf;
161 len = sizeof(buf);
162
163 var = synth_soft.vars;
164 while (var->var_id != MAXVARS) {
165 if (var->var_id != CAPS_START && var->var_id != CAPS_STOP &&
166 var->var_id != PAUSE && var->var_id != DIRECT) {
167 n = scnprintf(cp, len, var->u.n.synth_fmt,
168 var->u.n.value);
169 cp = cp + n;
170 len = len - n;
171 }
172 var++;
173 }
174 cp = cp + scnprintf(cp, len, "\n");
175 return buf;
176}
177
178static int softsynth_open(struct inode *inode, struct file *fp)
179{
180 unsigned long flags;
181
182
183 spin_lock_irqsave(&speakup_info.spinlock, flags);
184 if (synth_soft.alive) {
185 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
186 return -EBUSY;
187 }
188 synth_soft.alive = 1;
189 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
190 return 0;
191}
192
193static int softsynth_close(struct inode *inode, struct file *fp)
194{
195 unsigned long flags;
196
197 spin_lock_irqsave(&speakup_info.spinlock, flags);
198 synth_soft.alive = 0;
199 init_pos = 0;
200 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
201
202 speakup_start_ttys();
203 return 0;
204}
205
206static ssize_t softsynthx_read(struct file *fp, char __user *buf, size_t count,
207 loff_t *pos, int unicode)
208{
209 int chars_sent = 0;
210 char __user *cp;
211 char *init;
212 size_t bytes_per_ch = unicode ? 3 : 1;
213 u16 ch;
214 int empty;
215 unsigned long flags;
216 DEFINE_WAIT(wait);
217
218 if (count < bytes_per_ch)
219 return -EINVAL;
220
221 spin_lock_irqsave(&speakup_info.spinlock, flags);
222 synth_soft.alive = 1;
223 while (1) {
224 prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
225 if (synth_current() == &synth_soft) {
226 if (!unicode)
227 synth_buffer_skip_nonlatin1();
228 if (!synth_buffer_empty() || speakup_info.flushing)
229 break;
230 }
231 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
232 if (fp->f_flags & O_NONBLOCK) {
233 finish_wait(&speakup_event, &wait);
234 return -EAGAIN;
235 }
236 if (signal_pending(current)) {
237 finish_wait(&speakup_event, &wait);
238 return -ERESTARTSYS;
239 }
240 schedule();
241 spin_lock_irqsave(&speakup_info.spinlock, flags);
242 }
243 finish_wait(&speakup_event, &wait);
244
245 cp = buf;
246 init = get_initstring();
247
248
249 while (chars_sent <= count - bytes_per_ch) {
250 if (synth_current() != &synth_soft)
251 break;
252 if (speakup_info.flushing) {
253 speakup_info.flushing = 0;
254 ch = '\x18';
255 } else if (init[init_pos]) {
256 ch = init[init_pos++];
257 } else {
258 if (!unicode)
259 synth_buffer_skip_nonlatin1();
260 if (synth_buffer_empty())
261 break;
262 ch = synth_buffer_getc();
263 }
264 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
265
266 if ((!unicode && ch < 0x100) || (unicode && ch < 0x80)) {
267 u_char c = ch;
268
269 if (copy_to_user(cp, &c, 1))
270 return -EFAULT;
271
272 chars_sent++;
273 cp++;
274 } else if (unicode && ch < 0x800) {
275 u_char s[2] = {
276 0xc0 | (ch >> 6),
277 0x80 | (ch & 0x3f)
278 };
279
280 if (copy_to_user(cp, s, sizeof(s)))
281 return -EFAULT;
282
283 chars_sent += sizeof(s);
284 cp += sizeof(s);
285 } else if (unicode) {
286 u_char s[3] = {
287 0xe0 | (ch >> 12),
288 0x80 | ((ch >> 6) & 0x3f),
289 0x80 | (ch & 0x3f)
290 };
291
292 if (copy_to_user(cp, s, sizeof(s)))
293 return -EFAULT;
294
295 chars_sent += sizeof(s);
296 cp += sizeof(s);
297 }
298
299 spin_lock_irqsave(&speakup_info.spinlock, flags);
300 }
301 *pos += chars_sent;
302 empty = synth_buffer_empty();
303 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
304 if (empty) {
305 speakup_start_ttys();
306 *pos = 0;
307 }
308 return chars_sent;
309}
310
311static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
312 loff_t *pos)
313{
314 return softsynthx_read(fp, buf, count, pos, 0);
315}
316
317static ssize_t softsynthu_read(struct file *fp, char __user *buf, size_t count,
318 loff_t *pos)
319{
320 return softsynthx_read(fp, buf, count, pos, 1);
321}
322
323static int last_index;
324
325static ssize_t softsynth_write(struct file *fp, const char __user *buf,
326 size_t count, loff_t *pos)
327{
328 unsigned long supplied_index = 0;
329 int converted;
330
331 converted = kstrtoul_from_user(buf, count, 0, &supplied_index);
332
333 if (converted < 0)
334 return converted;
335
336 last_index = supplied_index;
337 return count;
338}
339
340static __poll_t softsynth_poll(struct file *fp, struct poll_table_struct *wait)
341{
342 unsigned long flags;
343 __poll_t ret = 0;
344
345 poll_wait(fp, &speakup_event, wait);
346
347 spin_lock_irqsave(&speakup_info.spinlock, flags);
348 if (synth_current() == &synth_soft &&
349 (!synth_buffer_empty() || speakup_info.flushing))
350 ret = EPOLLIN | EPOLLRDNORM;
351 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
352 return ret;
353}
354
355static unsigned char get_index(struct spk_synth *synth)
356{
357 int rv;
358
359 rv = last_index;
360 last_index = 0;
361 return rv;
362}
363
364static const struct file_operations softsynth_fops = {
365 .owner = THIS_MODULE,
366 .poll = softsynth_poll,
367 .read = softsynth_read,
368 .write = softsynth_write,
369 .open = softsynth_open,
370 .release = softsynth_close,
371};
372
373static const struct file_operations softsynthu_fops = {
374 .owner = THIS_MODULE,
375 .poll = softsynth_poll,
376 .read = softsynthu_read,
377 .write = softsynth_write,
378 .open = softsynth_open,
379 .release = softsynth_close,
380};
381
382static int softsynth_probe(struct spk_synth *synth)
383{
384 if (misc_registered != 0)
385 return 0;
386 memset(&synth_device, 0, sizeof(synth_device));
387 synth_device.minor = MISC_DYNAMIC_MINOR;
388 synth_device.name = "softsynth";
389 synth_device.fops = &softsynth_fops;
390 if (misc_register(&synth_device)) {
391 pr_warn("Couldn't initialize miscdevice /dev/softsynth.\n");
392 return -ENODEV;
393 }
394
395 memset(&synthu_device, 0, sizeof(synthu_device));
396 synthu_device.minor = MISC_DYNAMIC_MINOR;
397 synthu_device.name = "softsynthu";
398 synthu_device.fops = &softsynthu_fops;
399 if (misc_register(&synthu_device)) {
400 pr_warn("Couldn't initialize miscdevice /dev/softsynthu.\n");
401 return -ENODEV;
402 }
403
404 misc_registered = 1;
405 pr_info("initialized device: /dev/softsynth, node (MAJOR 10, MINOR %d)\n",
406 synth_device.minor);
407 pr_info("initialized device: /dev/softsynthu, node (MAJOR 10, MINOR %d)\n",
408 synthu_device.minor);
409 return 0;
410}
411
412static void softsynth_release(struct spk_synth *synth)
413{
414 misc_deregister(&synth_device);
415 misc_deregister(&synthu_device);
416 misc_registered = 0;
417 pr_info("unregistered /dev/softsynth\n");
418 pr_info("unregistered /dev/softsynthu\n");
419}
420
421static int softsynth_is_alive(struct spk_synth *synth)
422{
423 if (synth_soft.alive)
424 return 1;
425 return 0;
426}
427
428module_param_named(start, synth_soft.startup, short, 0444);
429
430MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
431
432module_spk_synth(synth_soft);
433
434MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
435MODULE_DESCRIPTION("Speakup userspace software synthesizer support");
436MODULE_LICENSE("GPL");
437MODULE_VERSION(DRV_VERSION);
438
