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1.16 ! ratchov 1: /* $OpenBSD$ */
1.1 ratchov 2: /*
3: * Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #include <sys/types.h>
18: #include <netinet/in.h>
19: #include <errno.h>
20: #include <poll.h>
21: #include <stdio.h>
22: #include <stdlib.h>
23: #include <string.h>
24: #include <unistd.h>
25:
26: #include "abuf.h"
27: #include "defs.h"
28: #include "dev.h"
29: #include "file.h"
30: #include "midi.h"
31: #include "opt.h"
32: #include "sock.h"
33: #include "utils.h"
34:
1.7 ratchov 35: void sock_log(struct sock *);
1.1 ratchov 36: void sock_close(struct sock *);
37: void sock_slot_fill(void *);
38: void sock_slot_flush(void *);
39: void sock_slot_eof(void *);
1.12 ratchov 40: void sock_slot_onmove(void *);
1.7 ratchov 41: void sock_slot_onvol(void *, unsigned int);
42: void sock_midi_imsg(void *, unsigned char *, int);
43: void sock_midi_omsg(void *, unsigned char *, int);
44: void sock_midi_fill(void *, int);
45: struct sock *sock_new(int);
1.1 ratchov 46: void sock_exit(void *);
1.7 ratchov 47: int sock_fdwrite(struct sock *, void *, int);
48: int sock_fdread(struct sock *, void *, int);
49: int sock_rmsg(struct sock *);
50: int sock_wmsg(struct sock *);
51: int sock_rdata(struct sock *);
52: int sock_wdata(struct sock *);
53: int sock_setpar(struct sock *);
54: int sock_auth(struct sock *);
55: int sock_hello(struct sock *);
56: int sock_execmsg(struct sock *);
57: int sock_buildmsg(struct sock *);
58: int sock_read(struct sock *);
59: int sock_write(struct sock *);
60: int sock_pollfd(void *, struct pollfd *);
61: int sock_revents(void *, struct pollfd *);
62: void sock_in(void *);
63: void sock_out(void *);
64: void sock_hup(void *);
1.1 ratchov 65:
66: struct fileops sock_fileops = {
67: "sock",
68: sock_pollfd,
69: sock_revents,
70: sock_in,
71: sock_out,
72: sock_hup
73: };
74:
75: struct slotops sock_slotops = {
76: sock_slot_onmove,
77: sock_slot_onvol,
78: sock_slot_fill,
79: sock_slot_flush,
80: sock_slot_eof,
81: sock_exit
82: };
83:
84: struct midiops sock_midiops = {
85: sock_midi_imsg,
86: sock_midi_omsg,
87: sock_midi_fill,
88: sock_exit
89: };
90:
91: struct sock *sock_list = NULL;
92: unsigned int sock_sesrefs = 0; /* connections to the session */
93: uint8_t sock_sescookie[AMSG_COOKIELEN]; /* owner of the session */
94:
95: void
96: sock_log(struct sock *f)
97: {
98: #ifdef DEBUG
99: static char *rstates[] = { "ridl", "rmsg", "rdat", "rret" };
100: static char *wstates[] = { "widl", "wmsg", "wdat" };
101: #endif
102: if (f->slot)
103: slot_log(f->slot);
104: else if (f->midi)
105: midi_log(f->midi);
106: else
107: log_puts("sock");
108: #ifdef DEBUG
109: if (log_level >= 3) {
110: log_puts(",");
111: log_puts(rstates[f->rstate]);
112: log_puts(",");
113: log_puts(wstates[f->wstate]);
114: }
115: #endif
116: }
117:
118: void
119: sock_close(struct sock *f)
120: {
121: struct sock **pf;
122:
123: for (pf = &sock_list; *pf != f; pf = &(*pf)->next) {
124: #ifdef DEBUG
125: if (*pf == NULL) {
126: log_puts("sock_close: not on list\n");
127: panic();
128: }
129: #endif
130: }
131: *pf = f->next;
132:
133: #ifdef DEBUG
134: if (log_level >= 3) {
135: sock_log(f);
136: log_puts(": closing\n");
137: }
138: #endif
139: if (f->pstate > SOCK_AUTH)
140: sock_sesrefs--;
141: if (f->slot) {
142: slot_del(f->slot);
143: f->slot = NULL;
144: }
145: if (f->midi) {
146: midi_del(f->midi);
147: f->midi = NULL;
148: }
1.3 ratchov 149: if (f->port) {
150: port_unref(f->port);
151: f->port = NULL;
152: }
1.1 ratchov 153: file_del(f->file);
154: close(f->fd);
1.16 ! ratchov 155: file_slowaccept = 0;
1.1 ratchov 156: xfree(f);
157: }
158:
159: void
160: sock_slot_fill(void *arg)
161: {
162: struct sock *f = arg;
163: struct slot *s = f->slot;
164:
165: f->fillpending += s->round;
166: #ifdef DEBUG
167: if (log_level >= 4) {
168: sock_log(f);
169: log_puts(": fill, rmax -> ");
170: log_puti(f->rmax);
171: log_puts(", pending -> ");
172: log_puti(f->fillpending);
173: log_puts("\n");
174: }
175: #endif
176: }
177:
178: void
179: sock_slot_flush(void *arg)
180: {
181: struct sock *f = arg;
182: struct slot *s = f->slot;
183:
184: f->wmax += s->round * s->sub.bpf;
185: #ifdef DEBUG
186: if (log_level >= 4) {
187: sock_log(f);
188: log_puts(": flush, wmax -> ");
189: log_puti(f->wmax);
190: log_puts("\n");
191: }
192: #endif
193: }
194:
195: void
196: sock_slot_eof(void *arg)
197: {
198: struct sock *f = arg;
199:
200: #ifdef DEBUG
201: if (log_level >= 3) {
202: sock_log(f);
203: log_puts(": stopped\n");
204: }
205: #endif
206: f->stoppending = 1;
207: }
208:
209: void
1.12 ratchov 210: sock_slot_onmove(void *arg)
1.1 ratchov 211: {
212: struct sock *f = (struct sock *)arg;
213: struct slot *s = f->slot;
214:
215: #ifdef DEBUG
216: if (log_level >= 4) {
217: sock_log(f);
218: log_puts(": onmove: delta -> ");
219: log_puti(s->delta);
220: log_puts("\n");
221: }
222: #endif
223: if (s->pstate != SOCK_START)
224: return;
225: f->tickpending++;
226: }
227:
228: void
229: sock_slot_onvol(void *arg, unsigned int delta)
230: {
231: struct sock *f = (struct sock *)arg;
232: struct slot *s = f->slot;
233:
234: #ifdef DEBUG
235: if (log_level >= 4) {
236: sock_log(f);
237: log_puts(": onvol: vol -> ");
238: log_puti(s->vol);
239: log_puts("\n");
240: }
241: #endif
242: if (s->pstate != SOCK_START)
243: return;
244: }
245:
246: void
247: sock_midi_imsg(void *arg, unsigned char *msg, int size)
248: {
249: struct sock *f = arg;
250:
251: midi_send(f->midi, msg, size);
252: }
253:
254: void
255: sock_midi_omsg(void *arg, unsigned char *msg, int size)
256: {
257: struct sock *f = arg;
258:
259: midi_out(f->midi, msg, size);
260: }
261:
262: void
263: sock_midi_fill(void *arg, int count)
264: {
265: struct sock *f = arg;
266:
267: f->fillpending += count;
268: }
269:
270: struct sock *
271: sock_new(int fd)
272: {
273: struct sock *f;
274:
275: f = xmalloc(sizeof(struct sock));
276: f->pstate = SOCK_AUTH;
277: f->opt = NULL;
278: f->slot = NULL;
1.13 ratchov 279: f->port = NULL;
1.1 ratchov 280: f->midi = NULL;
281: f->tickpending = 0;
282: f->fillpending = 0;
283: f->stoppending = 0;
284: f->wstate = SOCK_WIDLE;
285: f->wtodo = 0xdeadbeef;
286: f->rstate = SOCK_RMSG;
287: f->rtodo = sizeof(struct amsg);
288: f->wmax = f->rmax = 0;
289: f->lastvol = -1;
290: f->file = file_new(&sock_fileops, f, "sock", 1);
291: f->fd = fd;
292: if (f->file == NULL) {
293: xfree(f);
294: return NULL;
295: }
296: f->next = sock_list;
297: sock_list = f;
298: return f;
299: }
300:
301: void
302: sock_exit(void *arg)
303: {
304: struct sock *f = (struct sock *)arg;
305:
306: #ifdef DEBUG
307: if (log_level >= 3) {
308: sock_log(f);
309: log_puts(": exit\n");
310: }
311: #endif
312: sock_close(f);
313: }
314:
315: /*
316: * write on the socke fd and handle errors
317: */
318: int
319: sock_fdwrite(struct sock *f, void *data, int count)
320: {
321: int n;
322:
323: n = write(f->fd, data, count);
324: if (n < 0) {
325: #ifdef DEBUG
326: if (errno == EFAULT) {
327: log_puts("sock_fdwrite: fault\n");
328: panic();
329: }
330: #endif
331: if (errno != EAGAIN) {
332: if (log_level >= 1) {
333: sock_log(f);
334: log_puts(": write filed, errno = ");
335: log_puti(errno);
336: log_puts("\n");
337: }
338: sock_close(f);
339: } else {
340: #ifdef DEBUG
341: if (log_level >= 4) {
342: sock_log(f);
343: log_puts(": write blocked\n");
344: }
345: #endif
346: }
347: return 0;
348: }
349: if (n == 0) {
350: sock_close(f);
351: return 0;
352: }
353: return n;
354: }
355:
356: /*
357: * read from the socke fd and handle errors
358: */
359: int
360: sock_fdread(struct sock *f, void *data, int count)
361: {
362: int n;
363:
364: n = read(f->fd, data, count);
365: if (n < 0) {
366: #ifdef DEBUG
367: if (errno == EFAULT) {
368: log_puts("sock_fdread: fault\n");
369: panic();
370: }
371: #endif
372: if (errno != EAGAIN) {
373: if (log_level >= 1) {
374: sock_log(f);
375: log_puts(": read failed, errno = ");
376: log_puti(errno);
377: log_puts("\n");
378: }
379: sock_close(f);
380: } else {
381: #ifdef DEBUG
382: if (log_level >= 4) {
383: sock_log(f);
384: log_puts(": read blocked\n");
385: }
386: #endif
387: }
388: return 0;
389: }
390: if (n == 0) {
391: sock_close(f);
392: return 0;
393: }
394: return n;
395: }
396:
397: /*
398: * read the next message into f->rmsg, return 1 on success
399: */
400: int
401: sock_rmsg(struct sock *f)
402: {
403: int n;
404: char *data;
405:
406: #ifdef DEBUG
407: if (f->rtodo == 0) {
408: sock_log(f);
409: log_puts(": sock_rmsg: nothing to read\n");
410: panic();
411: }
412: #endif
413: data = (char *)&f->rmsg + sizeof(struct amsg) - f->rtodo;
414: n = sock_fdread(f, data, f->rtodo);
415: if (n == 0)
416: return 0;
417: if (n < f->rtodo) {
418: f->rtodo -= n;
419: return 0;
420: }
421: f->rtodo = 0;
422: #ifdef DEBUG
423: if (log_level >= 4) {
424: sock_log(f);
425: log_puts(": read full message\n");
426: }
427: #endif
428: return 1;
429: }
430:
431: /*
432: * write the message in f->rmsg, return 1 on success
433: */
434: int
435: sock_wmsg(struct sock *f)
436: {
437: int n;
438: char *data;
439:
440: #ifdef DEBUG
441: if (f->wtodo == 0) {
442: sock_log(f);
443: log_puts(": sock_wmsg: already written\n");
444: }
445: #endif
446: data = (char *)&f->wmsg + sizeof(struct amsg) - f->wtodo;
447: n = sock_fdwrite(f, data, f->wtodo);
448: if (n == 0)
449: return 0;
450: if (n < f->wtodo) {
451: f->wtodo -= n;
452: return 0;
453: }
454: f->wtodo = 0;
455: #ifdef DEBUG
456: if (log_level >= 4) {
457: sock_log(f);
458: log_puts(": wrote full message\n");
459: }
460: #endif
461: return 1;
462: }
463:
464: /*
465: * read data into the slot/midi ring buffer
466: */
467: int
468: sock_rdata(struct sock *f)
469: {
1.2 ratchov 470: unsigned char midibuf[MIDI_BUFSZ];
1.1 ratchov 471: unsigned char *data;
472: int n, count;
473:
474: #ifdef DEBUG
475: if (f->rtodo == 0) {
476: sock_log(f);
477: log_puts(": data block already read\n");
478: panic();
479: }
480: #endif
481: while (f->rtodo > 0) {
1.2 ratchov 482: if (f->slot)
483: data = abuf_wgetblk(&f->slot->mix.buf, &count);
484: else {
485: data = midibuf;
486: count = MIDI_BUFSZ;
487: }
1.1 ratchov 488: if (count > f->rtodo)
489: count = f->rtodo;
490: n = sock_fdread(f, data, count);
491: if (n == 0)
492: return 0;
493: f->rtodo -= n;
1.2 ratchov 494: if (f->slot)
495: abuf_wcommit(&f->slot->mix.buf, n);
496: else
497: midi_in(f->midi, midibuf, n);
1.1 ratchov 498: }
499: #ifdef DEBUG
500: if (log_level >= 4) {
501: sock_log(f);
502: log_puts(": read complete block\n");
503: }
504: #endif
505: if (f->slot)
506: slot_write(f->slot);
507: return 1;
508: }
509:
510: /*
511: * read data into the slot/midi ring buffer
512: */
513: int
514: sock_wdata(struct sock *f)
515: {
516: static unsigned char dummy[AMSG_DATAMAX];
517: unsigned char *data = NULL;
518: int n, count;
519:
520: #ifdef DEBUG
521: if (f->wtodo == 0) {
522: sock_log(f);
523: log_puts(": attempted to write zero-sized data block\n");
524: panic();
525: }
526: #endif
527: if (f->pstate == SOCK_STOP) {
528: while (f->wtodo > 0) {
529: n = sock_fdwrite(f, dummy, f->wtodo);
530: if (n == 0)
531: return 0;
532: f->wtodo -= n;
533: }
534: #ifdef DEBUG
535: if (log_level >= 4) {
536: sock_log(f);
537: log_puts(": zero-filled remaining block\n");
538: }
539: #endif
540: return 1;
541: }
542: while (f->wtodo > 0) {
1.15 ratchov 543: if (f->slot)
544: data = abuf_rgetblk(&f->slot->sub.buf, &count);
545: else if (f->midi)
546: data = abuf_rgetblk(&f->midi->obuf, &count);
1.1 ratchov 547: if (count > f->wtodo)
548: count = f->wtodo;
549: n = sock_fdwrite(f, data, count);
550: if (n == 0)
551: return 0;
552: f->wtodo -= n;
1.15 ratchov 553: if (f->slot)
554: abuf_rdiscard(&f->slot->sub.buf, n);
555: else if (f->midi)
556: abuf_rdiscard(&f->midi->obuf, n);
1.1 ratchov 557: }
558: if (f->slot)
559: slot_read(f->slot);
560: if (f->midi)
561: midi_fill(f->midi);
562: #ifdef DEBUG
563: if (log_level >= 4) {
564: sock_log(f);
565: log_puts(": wrote complete block\n");
566: }
567: #endif
568: return 1;
569: }
570:
571: int
572: sock_setpar(struct sock *f)
573: {
574: struct slot *s = f->slot;
575: struct dev *d = s->dev;
576: struct amsg_par *p = &f->rmsg.u.par;
1.9 ratchov 577: unsigned int min, max;
578: uint32_t rate, appbufsz;
579: uint16_t pchan, rchan;
1.1 ratchov 580:
581: rchan = ntohs(p->rchan);
582: pchan = ntohs(p->pchan);
583: appbufsz = ntohl(p->appbufsz);
584: rate = ntohl(p->rate);
585:
586: if (AMSG_ISSET(p->bits)) {
587: if (p->bits < BITS_MIN || p->bits > BITS_MAX) {
588: #ifdef DEBUG
589: if (log_level >= 1) {
590: sock_log(f);
591: log_puts(": ");
592: log_putu(p->bits);
593: log_puts(": bits out of bounds\n");
594: }
595: #endif
596: return 0;
597: }
598: if (AMSG_ISSET(p->bps)) {
599: if (p->bps < ((p->bits + 7) / 8) || p->bps > 4) {
600: #ifdef DEBUG
601: if (log_level >= 1) {
602: sock_log(f);
603: log_puts(": ");
604: log_putu(p->bps);
605: log_puts(": wrong bytes per sample\n");
606: }
607: #endif
608: return 0;
609: }
610: } else
611: p->bps = APARAMS_BPS(p->bits);
612: s->par.bits = p->bits;
613: s->par.bps = p->bps;
614: }
615: if (AMSG_ISSET(p->sig))
616: s->par.sig = p->sig ? 1 : 0;
617: if (AMSG_ISSET(p->le))
618: s->par.le = p->le ? 1 : 0;
619: if (AMSG_ISSET(p->msb))
620: s->par.msb = p->msb ? 1 : 0;
621: if (AMSG_ISSET(rchan) && (s->mode & MODE_RECMASK)) {
622: if (rchan < 1)
623: rchan = 1;
624: if (rchan > NCHAN_MAX)
625: rchan = NCHAN_MAX;
626: s->sub.slot_cmin = f->opt->rmin;
627: s->sub.slot_cmax = f->opt->rmin + rchan - 1;
628: s->sub.dev_cmin = f->opt->rmin;
629: s->sub.dev_cmax = f->opt->rmax;
630: #ifdef DEBUG
631: if (log_level >= 3) {
632: sock_log(f);
633: log_puts(": recording channels ");
1.6 ratchov 634: log_putu(s->sub.dev_cmin);
635: log_puts(":");
636: log_putu(s->sub.dev_cmax);
637: log_puts(" -> ");
1.1 ratchov 638: log_putu(s->sub.slot_cmin);
639: log_puts(":");
640: log_putu(s->sub.slot_cmax);
641: log_puts("\n");
642: }
643: #endif
644: }
645: if (AMSG_ISSET(pchan) && (s->mode & MODE_PLAY)) {
646: if (pchan < 1)
647: pchan = 1;
648: if (pchan > NCHAN_MAX)
649: pchan = NCHAN_MAX;
650: s->mix.slot_cmin = f->opt->pmin;
651: s->mix.slot_cmax = f->opt->pmin + pchan - 1;
652: s->mix.dev_cmin = f->opt->pmin;
653: s->mix.dev_cmax = f->opt->pmax;
654: #ifdef DEBUG
655: if (log_level >= 3) {
656: sock_log(f);
657: log_puts(": playback channels ");
658: log_putu(s->mix.slot_cmin);
659: log_puts(":");
660: log_putu(s->mix.slot_cmax);
661: log_puts(" -> ");
662: log_putu(s->mix.dev_cmin);
663: log_puts(":");
664: log_putu(s->mix.dev_cmax);
665: log_puts("\n");
666: }
667: #endif
668: }
669: if (AMSG_ISSET(rate)) {
670: if (rate < RATE_MIN)
671: rate = RATE_MIN;
672: if (rate > RATE_MAX)
673: rate = RATE_MAX;
674: s->round = dev_roundof(d, rate);
675: s->rate = rate;
676: if (!AMSG_ISSET(appbufsz)) {
677: appbufsz = d->bufsz / d->round * s->round;
678: #ifdef DEBUG
679: if (log_level >= 3) {
680: sock_log(f);
681: log_puts(": ");
682: log_putu(appbufsz);
683: log_puts(" frame buffer\n");
684: }
685: #endif
686: }
687: #ifdef DEBUG
688: if (log_level >= 3) {
689: sock_log(f);
690: log_puts(": ");
691: log_putu(rate);
692: log_puts("Hz sample rate, ");
693: log_putu(s->round);
694: log_puts(" frame blocks\n");
695: }
696: #endif
697: }
698: if (AMSG_ISSET(p->xrun)) {
699: if (p->xrun != XRUN_IGNORE &&
700: p->xrun != XRUN_SYNC &&
701: p->xrun != XRUN_ERROR) {
702: #ifdef DEBUG
703: if (log_level >= 1) {
704: sock_log(f);
705: log_puts(": ");
706: log_putx(p->xrun);
707: log_puts(": bad xrun policy\n");
708: }
709: #endif
710: return 0;
711: }
712: s->xrun = p->xrun;
713: if (f->opt->mmc && s->xrun == XRUN_IGNORE)
714: s->xrun = XRUN_SYNC;
715: #ifdef DEBUG
716: if (log_level >= 3) {
717: sock_log(f);
718: log_puts(": 0x");
719: log_putx(s->xrun);
720: log_puts(" xrun policy\n");
721: }
722: #endif
723: }
724: if (AMSG_ISSET(appbufsz)) {
725: rate = s->rate;
726: min = 1;
727: max = 1 + rate / d->round;
728: min *= s->round;
729: max *= s->round;
1.8 ratchov 730: appbufsz += s->round / 2;
1.1 ratchov 731: appbufsz -= appbufsz % s->round;
732: if (appbufsz < min)
733: appbufsz = min;
734: if (appbufsz > max)
735: appbufsz = max;
736: s->appbufsz = appbufsz;
737: #ifdef DEBUG
738: if (log_level >= 3) {
739: sock_log(f);
740: log_puts(": ");
741: log_putu(s->appbufsz);
742: log_puts(" frame buffer\n");
743: }
744: #endif
745: }
746: return 1;
747: }
748:
749: int
750: sock_auth(struct sock *f)
751: {
752: struct amsg_auth *p = &f->rmsg.u.auth;
753:
754: if (sock_sesrefs == 0) {
755: /* start a new session */
756: memcpy(sock_sescookie, p->cookie, AMSG_COOKIELEN);
757: } else if (memcmp(sock_sescookie, p->cookie, AMSG_COOKIELEN) != 0) {
758: /* another session is active, drop connection */
759: return 0;
760: }
761: sock_sesrefs++;
762: f->pstate = SOCK_HELLO;
763: return 1;
764: }
765:
766: int
767: sock_hello(struct sock *f)
768: {
769: struct amsg_hello *p = &f->rmsg.u.hello;
770: struct slot *s;
771: struct port *c;
772: struct dev *d;
773: unsigned int mode;
774:
775: mode = ntohs(p->mode);
776: #ifdef DEBUG
777: if (log_level >= 3) {
778: sock_log(f);
779: log_puts(": hello from <");
780: log_puts(p->who);
781: log_puts(">, mode = ");
782: log_putx(mode);
783: log_puts(", ver ");
784: log_putu(p->version);
785: log_puts("\n");
786: }
787: #endif
788: if (p->version != AMSG_VERSION) {
789: if (log_level >= 1) {
790: sock_log(f);
791: log_puts(": ");
792: log_putu(p->version);
793: log_puts(": unsupported protocol version\n");
794: }
795: return 0;
796: }
797: switch (mode) {
798: case MODE_MIDIIN:
799: case MODE_MIDIOUT:
800: case MODE_MIDIOUT | MODE_MIDIIN:
801: case MODE_REC:
802: case MODE_PLAY:
803: case MODE_PLAY | MODE_REC:
804: break;
805: default:
806: #ifdef DEBUG
807: if (log_level >= 1) {
808: sock_log(f);
809: log_puts(": ");
810: log_putx(mode);
811: log_puts(": unsupported mode\n");
812: }
813: #endif
814: return 0;
815: }
816: f->pstate = SOCK_INIT;
1.5 ratchov 817: f->port = NULL;
1.1 ratchov 818: if (mode & MODE_MIDIMASK) {
819: f->slot = NULL;
820: f->midi = midi_new(&sock_midiops, f, mode);
821: if (f->midi == NULL)
822: return 0;
823: /* XXX: add 'devtype' to libsndio */
824: if (p->devnum < 16) {
825: d = dev_bynum(p->devnum);
826: if (d == NULL)
827: return 0;
828: midi_tag(f->midi, p->devnum);
829: } else if (p->devnum < 32) {
830: midi_tag(f->midi, p->devnum);
831: } else if (p->devnum < 48) {
832: c = port_bynum(p->devnum - 32);
1.3 ratchov 833: if (c == NULL || !port_ref(c))
1.1 ratchov 834: return 0;
1.3 ratchov 835: f->port = c;
1.2 ratchov 836: midi_link(f->midi, c->midi);
1.1 ratchov 837: } else
838: return 0;
839: return 1;
840: }
841: f->opt = opt_byname(p->opt, p->devnum);
842: if (f->opt == NULL)
843: return 0;
844: #ifdef DEBUG
845: if (log_level >= 3) {
846: sock_log(f);
847: log_puts(": using ");
848: dev_log(f->opt->dev);
849: log_puts(".");
850: log_puts(f->opt->name);
851: log_puts(", mode = ");
852: log_putx(mode);
853: log_puts("\n");
854: }
855: #endif
856: if ((mode & MODE_REC) && (f->opt->mode & MODE_MON)) {
857: mode |= MODE_MON;
858: mode &= ~MODE_REC;
859: }
860: if ((mode & f->opt->mode) != mode) {
861: if (log_level >= 1) {
862: sock_log(f);
863: log_puts(": requested mode not allowed\n");
864: }
865: return 0;
866: }
867: s = slot_new(f->opt->dev, p->who, &sock_slotops, f, mode);
868: if (s == NULL)
869: return 0;
870: f->midi = NULL;
871: if (s->mode & MODE_PLAY) {
1.6 ratchov 872: s->mix.slot_cmin = s->mix.dev_cmin = f->opt->pmin;
873: s->mix.slot_cmax = s->mix.dev_cmax = f->opt->pmax;
1.1 ratchov 874: }
875: if (s->mode & MODE_RECMASK) {
1.6 ratchov 876: s->sub.slot_cmin = s->sub.dev_cmin = f->opt->rmin;
877: s->sub.slot_cmax = s->sub.dev_cmax = f->opt->rmax;
1.1 ratchov 878: }
879: if (f->opt->mmc) {
880: s->xrun = XRUN_SYNC;
881: s->tstate = MMC_STOP;
882: } else {
883: s->xrun = XRUN_IGNORE;
884: s->tstate = MMC_OFF;
885: }
886: s->mix.maxweight = f->opt->maxweight;
887: s->dup = f->opt->dup;
888: f->slot = s;
889: return 1;
890: }
891:
892: /*
893: * execute the message in f->rmsg, return 1 on success
894: */
895: int
896: sock_execmsg(struct sock *f)
897: {
898: struct slot *s = f->slot;
899: struct amsg *m = &f->rmsg;
900: unsigned char *data;
901: int size, ctl;
902:
903: switch (ntohl(m->cmd)) {
904: case AMSG_DATA:
905: #ifdef DEBUG
906: if (log_level >= 4) {
907: sock_log(f);
908: log_puts(": DATA message\n");
909: }
910: #endif
911: if (s != NULL && f->pstate != SOCK_START) {
912: #ifdef DEBUG
913: if (log_level >= 1) {
914: sock_log(f);
915: log_puts(": DATA, wrong state\n");
916: }
917: #endif
918: sock_close(f);
919: return 0;
920: }
921: if ((f->slot && !(f->slot->mode & MODE_PLAY)) ||
922: (f->midi && !(f->midi->mode & MODE_MIDIOUT))) {
923: #ifdef DEBUG
924: if (log_level >= 1) {
925: sock_log(f);
926: log_puts(": DATA, input-only mode\n");
927: }
928: #endif
929: sock_close(f);
930: return 0;
931: }
932: size = ntohl(m->u.data.size);
933: if (size <= 0) {
934: #ifdef DEBUG
935: if (log_level >= 1) {
936: sock_log(f);
937: log_puts(": zero size payload\n");
938: }
939: #endif
940: sock_close(f);
941: return 0;
942: }
943: if (s != NULL && size % s->mix.bpf != 0) {
944: #ifdef DEBUG
945: if (log_level >= 1) {
946: sock_log(f);
947: log_puts(": not aligned to frame\n");
948: }
949: #endif
950: sock_close(f);
951: return 0;
952: }
953: if (s != NULL && size > f->ralign) {
954: #ifdef DEBUG
955: if (log_level >= 1) {
956: sock_log(f);
957: log_puts(": size = ");
958: log_puti(size);
959: log_puts(": ralign = ");
960: log_puti(f->ralign);
961: log_puts(": not aligned to block\n");
962: }
963: #endif
964: sock_close(f);
965: return 0;
966: }
967: f->rstate = SOCK_RDATA;
968: f->rsize = f->rtodo = size;
969: if (s != NULL) {
970: f->ralign -= size;
971: if (f->ralign == 0)
972: f->ralign = s->round * s->mix.bpf;
973: }
974: if (f->rtodo > f->rmax) {
975: #ifdef DEBUG
976: if (log_level >= 1) {
977: sock_log(f);
978: log_puts(": unexpected data, size = ");
979: log_putu(size);
980: log_puts(", rmax = ");
981: log_putu(f->rmax);
982: log_puts("\n");
983: }
984: #endif
985: sock_close(f);
986: return 0;
987: }
988: f->rmax -= f->rtodo;
989: if (f->rtodo == 0) {
990: #ifdef DEBUG
991: if (log_level >= 1) {
992: sock_log(f);
993: log_puts(": zero-length data chunk\n");
994: }
995: #endif
996: sock_close(f);
997: return 0;
998: }
999: break;
1000: case AMSG_START:
1001: #ifdef DEBUG
1002: if (log_level >= 3) {
1003: sock_log(f);
1004: log_puts(": START message\n");
1005: }
1006: #endif
1.15 ratchov 1007: if (f->pstate != SOCK_INIT || s == NULL) {
1.1 ratchov 1008: #ifdef DEBUG
1009: if (log_level >= 1) {
1010: sock_log(f);
1011: log_puts(": START, wrong state\n");
1012: }
1013: #endif
1014: sock_close(f);
1015: return 0;
1016: }
1017: f->tickpending = 0;
1018: f->stoppending = 0;
1019: slot_start(s);
1020: if (s->mode & MODE_PLAY) {
1021: f->fillpending = s->appbufsz;
1022: f->ralign = s->round * s->mix.bpf;
1023: f->rmax = 0;
1024: }
1025: if (s->mode & MODE_RECMASK) {
1026: f->walign = s->round * s->sub.bpf;
1027: f->wmax = 0;
1028: }
1029: f->pstate = SOCK_START;
1030: f->rstate = SOCK_RMSG;
1031: f->rtodo = sizeof(struct amsg);
1032: if (log_level >= 2) {
1033: slot_log(f->slot);
1034: log_puts(": ");
1035: log_putu(s->rate);
1036: log_puts("Hz, ");
1037: aparams_log(&s->par);
1038: if (s->mode & MODE_PLAY) {
1039: log_puts(", play ");
1040: log_puti(s->mix.slot_cmin);
1041: log_puts(":");
1042: log_puti(s->mix.slot_cmax);
1043: }
1044: if (s->mode & MODE_RECMASK) {
1045: log_puts(", rec ");
1046: log_puti(s->sub.slot_cmin);
1047: log_puts(":");
1048: log_puti(s->sub.slot_cmax);
1049: }
1050: log_puts(", ");
1051: log_putu(s->appbufsz / s->round);
1052: log_puts(" blocks of ");
1053: log_putu(s->round);
1054: log_puts(" frames\n");
1055: }
1056: break;
1057: case AMSG_STOP:
1058: #ifdef DEBUG
1059: if (log_level >= 3) {
1060: sock_log(f);
1061: log_puts(": STOP message\n");
1062: }
1063: #endif
1064: if (f->pstate != SOCK_START) {
1065: #ifdef DEBUG
1066: if (log_level >= 1) {
1067: sock_log(f);
1068: log_puts(": STOP, wrong state\n");
1069: }
1070: #endif
1071: sock_close(f);
1072: return 0;
1073: }
1074: f->rmax = 0;
1075: if (!(s->mode & MODE_PLAY))
1076: f->stoppending = 1;
1077: f->pstate = SOCK_STOP;
1078: f->rstate = SOCK_RMSG;
1079: f->rtodo = sizeof(struct amsg);
1080: if (s->mode & MODE_PLAY) {
1081: if (f->ralign < s->round * s->mix.bpf) {
1082: data = abuf_wgetblk(&s->mix.buf, &size);
1083: #ifdef DEBUG
1084: if (size < f->ralign) {
1085: sock_log(f);
1086: log_puts(": unaligned stop, size = ");
1087: log_putu(size);
1088: log_puts(", ralign = ");
1089: log_putu(f->ralign);
1090: log_puts("\n");
1091: panic();
1092: }
1093: #endif
1094: memset(data, 0, f->ralign);
1095: abuf_wcommit(&s->mix.buf, f->ralign);
1096: f->ralign = s->round * s->mix.bpf;
1097: }
1098: }
1099: slot_stop(s);
1100: break;
1101: case AMSG_SETPAR:
1102: #ifdef DEBUG
1103: if (log_level >= 3) {
1104: sock_log(f);
1105: log_puts(": SETPAR message\n");
1106: }
1107: #endif
1.15 ratchov 1108: if (f->pstate != SOCK_INIT || s == NULL) {
1.1 ratchov 1109: #ifdef DEBUG
1110: if (log_level >= 1) {
1111: sock_log(f);
1112: log_puts(": SETPAR, wrong state\n");
1113: }
1114: #endif
1115: sock_close(f);
1116: return 0;
1117: }
1118: if (!sock_setpar(f)) {
1119: sock_close(f);
1120: return 0;
1121: }
1122: f->rtodo = sizeof(struct amsg);
1123: f->rstate = SOCK_RMSG;
1124: break;
1125: case AMSG_GETPAR:
1126: #ifdef DEBUG
1127: if (log_level >= 3) {
1128: sock_log(f);
1129: log_puts(": GETPAR message\n");
1130: }
1131: #endif
1.15 ratchov 1132: if (f->pstate != SOCK_INIT || s == NULL) {
1.1 ratchov 1133: #ifdef DEBUG
1134: if (log_level >= 1) {
1135: sock_log(f);
1136: log_puts(": GETPAR, wrong state\n");
1137: }
1138: #endif
1139: sock_close(f);
1140: return 0;
1141: }
1142: AMSG_INIT(m);
1143: m->cmd = htonl(AMSG_GETPAR);
1144: m->u.par.legacy_mode = s->mode;
1.14 ratchov 1145: m->u.par.xrun = s->xrun;
1.1 ratchov 1146: m->u.par.bits = s->par.bits;
1147: m->u.par.bps = s->par.bps;
1148: m->u.par.sig = s->par.sig;
1149: m->u.par.le = s->par.le;
1150: m->u.par.msb = s->par.msb;
1151: if (s->mode & MODE_PLAY) {
1152: m->u.par.pchan = htons(s->mix.slot_cmax -
1153: s->mix.slot_cmin + 1);
1154: }
1155: if (s->mode & MODE_RECMASK) {
1156: m->u.par.rchan = htons(s->sub.slot_cmax -
1157: s->sub.slot_cmin + 1);
1158: }
1159: m->u.par.rate = htonl(s->rate);
1160: m->u.par.appbufsz = htonl(s->appbufsz);
1161: m->u.par.bufsz = htonl(SLOT_BUFSZ(s));
1162: m->u.par.round = htonl(s->round);
1163: f->rstate = SOCK_RRET;
1164: f->rtodo = sizeof(struct amsg);
1165: break;
1166: case AMSG_SETVOL:
1167: #ifdef DEBUG
1168: if (log_level >= 3) {
1169: sock_log(f);
1170: log_puts(": SETVOL message\n");
1171: }
1172: #endif
1.15 ratchov 1173: if (f->pstate < SOCK_INIT || s == NULL) {
1.1 ratchov 1174: #ifdef DEBUG
1175: if (log_level >= 1) {
1176: sock_log(f);
1177: log_puts(": SETVOL, wrong state\n");
1178: }
1179: #endif
1180: sock_close(f);
1181: return 0;
1182: }
1183: ctl = ntohl(m->u.vol.ctl);
1184: if (ctl > MIDI_MAXCTL) {
1185: #ifdef DEBUG
1186: if (log_level >= 1) {
1187: sock_log(f);
1188: log_puts(": SETVOL, volume out of range\n");
1189: }
1190: #endif
1191: sock_close(f);
1192: return 0;
1193: }
1194: f->rtodo = sizeof(struct amsg);
1195: f->rstate = SOCK_RMSG;
1196: f->lastvol = ctl; /* dont trigger feedback message */
1.15 ratchov 1197: slot_setvol(s, ctl);
1.1 ratchov 1198: dev_midi_vol(s->dev, s);
1199: break;
1200: case AMSG_AUTH:
1201: #ifdef DEBUG
1202: if (log_level >= 3) {
1203: sock_log(f);
1204: log_puts(": AUTH message\n");
1205: }
1206: #endif
1207: if (f->pstate != SOCK_AUTH) {
1208: #ifdef DEBUG
1209: if (log_level >= 1) {
1210: sock_log(f);
1211: log_puts(": AUTH, wrong state\n");
1212: }
1213: #endif
1214: sock_close(f);
1215: return 0;
1216: }
1217: if (!sock_auth(f)) {
1218: sock_close(f);
1219: return 0;
1220: }
1221: f->rstate = SOCK_RMSG;
1222: f->rtodo = sizeof(struct amsg);
1223: break;
1224: case AMSG_HELLO:
1225: #ifdef DEBUG
1226: if (log_level >= 3) {
1227: sock_log(f);
1228: log_puts(": HELLO message\n");
1229: }
1230: #endif
1231: if (f->pstate != SOCK_HELLO) {
1232: #ifdef DEBUG
1233: if (log_level >= 1) {
1234: sock_log(f);
1235: log_puts(": HELLO, wrong state\n");
1236: }
1237: #endif
1238: sock_close(f);
1239: return 0;
1240: }
1241: if (!sock_hello(f)) {
1242: sock_close(f);
1243: return 0;
1244: }
1245: AMSG_INIT(m);
1246: m->cmd = htonl(AMSG_ACK);
1247: f->rstate = SOCK_RRET;
1248: f->rtodo = sizeof(struct amsg);
1249: break;
1250: case AMSG_BYE:
1251: #ifdef DEBUG
1252: if (log_level >= 3) {
1253: sock_log(f);
1254: log_puts(": BYE message\n");
1255: }
1256: #endif
1257: if (s != NULL && f->pstate != SOCK_INIT) {
1258: #ifdef DEBUG
1259: if (log_level >= 1) {
1260: sock_log(f);
1261: log_puts(": BYE, wrong state\n");
1262: }
1263: #endif
1264: }
1265: sock_close(f);
1266: return 0;
1267: default:
1268: #ifdef DEBUG
1269: if (log_level >= 1) {
1270: sock_log(f);
1271: log_puts(": unknown command in message\n");
1272: }
1273: #endif
1274: sock_close(f);
1275: return 0;
1276: }
1277: return 1;
1278: }
1279:
1280: /*
1281: * build a message in f->wmsg, return 1 on success and 0 if
1282: * there's nothing to do. Assume f->wstate is SOCK_WIDLE
1283: */
1284: int
1285: sock_buildmsg(struct sock *f)
1286: {
1287: unsigned int size;
1288:
1289: /*
1290: * If pos changed (or initial tick), build a MOVE message.
1291: */
1292: if (f->tickpending) {
1293: #ifdef DEBUG
1294: if (log_level >= 4) {
1295: sock_log(f);
1296: log_puts(": building MOVE message, delta = ");
1297: log_puti(f->slot->delta);
1298: log_puts("\n");
1299: }
1300: #endif
1301: AMSG_INIT(&f->wmsg);
1302: f->wmsg.cmd = htonl(AMSG_MOVE);
1303: f->wmsg.u.ts.delta = htonl(f->slot->delta);
1304: f->wtodo = sizeof(struct amsg);
1305: f->wstate = SOCK_WMSG;
1306: f->tickpending = 0;
1307: /*
1308: * XXX: use tickpending as accumulator rather than
1309: * slot->delta
1310: */
1311: f->slot->delta = 0;
1312: return 1;
1313: }
1314:
1315: if (f->fillpending > 0) {
1316: AMSG_INIT(&f->wmsg);
1317: f->wmsg.cmd = htonl(AMSG_FLOWCTL);
1318: f->wmsg.u.ts.delta = htonl(f->fillpending);
1319: size = f->fillpending;
1320: if (f->slot)
1321: size *= f->slot->mix.bpf;
1322: f->rmax += size;
1323: #ifdef DEBUG
1324: if (log_level >= 4) {
1325: sock_log(f);
1326: log_puts(": building FLOWCTL message, count = ");
1327: log_puti(f->fillpending);
1328: log_puts(", rmax -> ");
1329: log_puti(f->rmax);
1330: log_puts("\n");
1331: }
1332: #endif
1333: f->wtodo = sizeof(struct amsg);
1334: f->wstate = SOCK_WMSG;
1335: f->fillpending = 0;
1336: return 1;
1337: }
1338:
1339: /*
1340: * if volume changed build a SETVOL message
1341: */
1342: if (f->pstate >= SOCK_START && f->slot->vol != f->lastvol) {
1343: #ifdef DEBUG
1344: if (log_level >= 3) {
1345: sock_log(f);
1346: log_puts(": building SETVOL message, vol = ");
1347: log_puti(f->slot->vol);
1348: log_puts("\n");
1349: }
1350: #endif
1351: AMSG_INIT(&f->wmsg);
1352: f->wmsg.cmd = htonl(AMSG_SETVOL);
1353: f->wmsg.u.vol.ctl = htonl(f->slot->vol);
1354: f->wtodo = sizeof(struct amsg);
1355: f->wstate = SOCK_WMSG;
1356: f->lastvol = f->slot->vol;
1357: return 1;
1358: }
1359:
1360: if (f->midi != NULL && f->midi->obuf.used > 0) {
1361: size = f->midi->obuf.used;
1362: if (size > AMSG_DATAMAX)
1363: size = AMSG_DATAMAX;
1364: AMSG_INIT(&f->wmsg);
1365: f->wmsg.cmd = htonl(AMSG_DATA);
1366: f->wmsg.u.data.size = htonl(size);
1367: f->wtodo = sizeof(struct amsg);
1368: f->wstate = SOCK_WMSG;
1369: return 1;
1370: }
1371:
1372: /*
1373: * If data available, build a DATA message.
1374: */
1.10 ratchov 1375: if (f->slot != NULL && f->wmax > 0 && f->slot->sub.buf.used > 0) {
1.1 ratchov 1376: size = f->slot->sub.buf.used;
1377: if (size > AMSG_DATAMAX)
1378: size = AMSG_DATAMAX;
1379: if (size > f->walign)
1380: size = f->walign;
1381: if (size > f->wmax)
1382: size = f->wmax;
1383: size -= size % f->slot->sub.bpf;
1384: #ifdef DEBUG
1385: if (size == 0) {
1386: sock_log(f);
1387: log_puts(": sock_buildmsg size == 0\n");
1388: panic();
1389: }
1390: #endif
1391: f->walign -= size;
1392: f->wmax -= size;
1393: if (f->walign == 0)
1394: f->walign = f->slot->round * f->slot->sub.bpf;
1395: #ifdef DEBUG
1396: if (log_level >= 4) {
1397: sock_log(f);
1398: log_puts(": building audio DATA message, size = ");
1399: log_puti(size);
1400: log_puts("\n");
1401: }
1402: #endif
1403: AMSG_INIT(&f->wmsg);
1404: f->wmsg.cmd = htonl(AMSG_DATA);
1405: f->wmsg.u.data.size = htonl(size);
1406: f->wtodo = sizeof(struct amsg);
1407: f->wstate = SOCK_WMSG;
1408: return 1;
1409: }
1410:
1411: if (f->stoppending) {
1412: #ifdef DEBUG
1413: if (log_level >= 3) {
1414: sock_log(f);
1415: log_puts(": building STOP message\n");
1416: }
1417: #endif
1418: f->stoppending = 0;
1419: f->pstate = SOCK_INIT;
1420: AMSG_INIT(&f->wmsg);
1421: f->wmsg.cmd = htonl(AMSG_STOP);
1422: f->wtodo = sizeof(struct amsg);
1423: f->wstate = SOCK_WMSG;
1424: return 1;
1425: }
1426: #ifdef DEBUG
1427: if (log_level >= 4) {
1428: sock_log(f);
1429: log_puts(": no messages to build anymore, idling...\n");
1430: }
1431: #endif
1432: f->wstate = SOCK_WIDLE;
1433: return 0;
1434: }
1435:
1436: /*
1437: * iteration of the socket reader loop, return 1 on success
1438: */
1439: int
1440: sock_read(struct sock *f)
1441: {
1442: #ifdef DEBUG
1443: if (log_level >= 4) {
1444: sock_log(f);
1445: log_puts(": reading ");
1446: log_putu(f->rtodo);
1447: log_puts(" todo\n");
1448: }
1449: #endif
1450: switch (f->rstate) {
1451: case SOCK_RIDLE:
1452: return 0;
1453: case SOCK_RMSG:
1454: if (!sock_rmsg(f))
1455: return 0;
1456: if (!sock_execmsg(f))
1457: return 0;
1458: break;
1459: case SOCK_RDATA:
1460: if (!sock_rdata(f))
1461: return 0;
1462: f->rstate = SOCK_RMSG;
1463: f->rtodo = sizeof(struct amsg);
1464: break;
1465: case SOCK_RRET:
1466: if (f->wstate != SOCK_WIDLE) {
1467: #ifdef DEBUG
1468: if (log_level >= 4) {
1469: sock_log(f);
1470: log_puts(": can't reply, write-end blocked\n");
1471: }
1472: #endif
1473: return 0;
1474: }
1475: f->wmsg = f->rmsg;
1476: f->wstate = SOCK_WMSG;
1477: f->wtodo = sizeof(struct amsg);
1478: f->rstate = SOCK_RMSG;
1479: f->rtodo = sizeof(struct amsg);
1480: #ifdef DEBUG
1481: if (log_level >= 4) {
1482: sock_log(f);
1483: log_puts(": copied RRET message\n");
1484: }
1485: #endif
1486: }
1487: return 1;
1488: }
1489:
1490: /*
1491: * iteration of the socket writer loop, return 1 on success
1492: */
1493: int
1494: sock_write(struct sock *f)
1495: {
1496: #ifdef DEBUG
1497: if (log_level >= 4) {
1498: sock_log(f);
1499: log_puts(": writing");
1500: if (f->wstate != SOCK_WIDLE) {
1501: log_puts(" todo = ");
1502: log_putu(f->wtodo);
1503: }
1504: log_puts("\n");
1505: }
1506: #endif
1507: switch (f->wstate) {
1508: case SOCK_WMSG:
1509: if (!sock_wmsg(f))
1510: return 0;
1511: if (ntohl(f->wmsg.cmd) != AMSG_DATA) {
1512: f->wstate = SOCK_WIDLE;
1513: f->wtodo = 0xdeadbeef;
1514: break;
1515: }
1516: f->wstate = SOCK_WDATA;
1517: f->wsize = f->wtodo = ntohl(f->wmsg.u.data.size);
1518: /* PASSTHROUGH */
1519: case SOCK_WDATA:
1520: if (!sock_wdata(f))
1521: return 0;
1522: if (f->wtodo > 0)
1523: break;
1524: f->wstate = SOCK_WIDLE;
1525: f->wtodo = 0xdeadbeef;
1526: if (f->pstate == SOCK_STOP) {
1527: f->pstate = SOCK_INIT;
1528: f->wmax = 0;
1529: #ifdef DEBUG
1530: if (log_level >= 4) {
1531: sock_log(f);
1532: log_puts(": drained, moved to INIT state\n");
1533: }
1534: #endif
1535: }
1536: /* PASSTHROUGH */
1537: case SOCK_WIDLE:
1538: if (f->rstate == SOCK_RRET) {
1539: f->wmsg = f->rmsg;
1540: f->wstate = SOCK_WMSG;
1541: f->wtodo = sizeof(struct amsg);
1542: f->rstate = SOCK_RMSG;
1543: f->rtodo = sizeof(struct amsg);
1544: #ifdef DEBUG
1545: if (log_level >= 4) {
1546: sock_log(f);
1547: log_puts(": copied RRET message\n");
1548: }
1549: #endif
1550: } else {
1551: if (!sock_buildmsg(f))
1552: return 0;
1553: }
1554: break;
1555: #ifdef DEBUG
1556: default:
1557: sock_log(f);
1558: log_puts(": bad writing end state\n");
1559: panic();
1560: #endif
1561: }
1562: return 1;
1563: }
1564:
1565: int
1566: sock_pollfd(void *arg, struct pollfd *pfd)
1567: {
1568: struct sock *f = arg;
1569: int events = 0;
1570:
1571: /*
1572: * feedback counters, clock ticks and alike may have changed,
1573: * prepare a message to trigger writes
1574: *
1575: * XXX: doing this at the beginning of the cycle is not optimal,
1576: * because state is changed at the end of the read cycle, and
1577: * thus counters, ret message and alike are generated then.
1578: */
1579: if (f->wstate == SOCK_WIDLE && f->rstate != SOCK_RRET)
1580: sock_buildmsg(f);
1581:
1582: if (f->rstate == SOCK_RMSG ||
1583: f->rstate == SOCK_RDATA)
1584: events |= POLLIN;
1585: if (f->rstate == SOCK_RRET ||
1586: f->wstate == SOCK_WMSG ||
1587: f->wstate == SOCK_WDATA)
1588: events |= POLLOUT;
1589: pfd->fd = f->fd;
1590: pfd->events = events;
1591: return 1;
1592: }
1593:
1594: int
1595: sock_revents(void *arg, struct pollfd *pfd)
1596: {
1597: return pfd->revents;
1598: }
1599:
1600: void
1601: sock_in(void *arg)
1602: {
1603: struct sock *f = arg;
1604:
1605: while (sock_read(f))
1606: ;
1607: }
1608:
1609: void
1610: sock_out(void *arg)
1611: {
1612: struct sock *f = arg;
1613:
1614: while (sock_write(f))
1615: ;
1616: }
1617:
1618: void
1619: sock_hup(void *arg)
1620: {
1621: struct sock *f = arg;
1622:
1623: sock_close(f);
1624: }