1 |
/* |
/* -*- c-basic-offset: 8 -*- |
2 |
rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
3 |
Sound Channel Process Functions |
Sound Channel Process Functions |
4 |
Copyright (C) Matthew Chapman 2003 |
Copyright (C) Matthew Chapman 2003 |
19 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 |
*/ |
*/ |
21 |
|
|
22 |
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#include <assert.h> |
23 |
|
|
24 |
#include "rdesktop.h" |
#include "rdesktop.h" |
25 |
|
#include "rdpsnd.h" |
26 |
|
#include "rdpsnd_dsp.h" |
27 |
|
|
28 |
#define RDPSND_CLOSE 1 |
#define RDPSND_CLOSE 1 |
29 |
#define RDPSND_WRITE 2 |
#define RDPSND_WRITE 2 |
30 |
#define RDPSND_SET_VOLUME 3 |
#define RDPSND_SET_VOLUME 3 |
31 |
#define RDPSND_UNKNOWN4 4 |
#define RDPSND_UNKNOWN4 4 |
32 |
#define RDPSND_COMPLETION 5 |
#define RDPSND_COMPLETION 5 |
33 |
#define RDPSND_UNKNOWN6 6 |
#define RDPSND_PING 6 |
34 |
#define RDPSND_NEGOTIATE 7 |
#define RDPSND_NEGOTIATE 7 |
35 |
|
|
36 |
#define MAX_FORMATS 10 |
#define MAX_FORMATS 10 |
37 |
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#define MAX_QUEUE 10 |
38 |
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|
39 |
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BOOL g_dsp_busy = False; |
40 |
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int g_dsp_fd; |
41 |
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|
42 |
static VCHANNEL *rdpsnd_channel; |
static VCHANNEL *rdpsnd_channel; |
43 |
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static struct audio_driver *drivers = NULL; |
44 |
|
struct audio_driver *current_driver = NULL; |
45 |
|
|
46 |
static BOOL device_open; |
static BOOL device_open; |
47 |
static WAVEFORMATEX formats[MAX_FORMATS]; |
static WAVEFORMATEX formats[MAX_FORMATS]; |
48 |
static unsigned int format_count; |
static unsigned int format_count; |
49 |
static unsigned int current_format; |
static unsigned int current_format; |
50 |
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unsigned int queue_hi, queue_lo, queue_pending; |
51 |
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struct audio_packet packet_queue[MAX_QUEUE]; |
52 |
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53 |
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void (*wave_out_play) (void); |
54 |
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|
55 |
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static void rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index); |
56 |
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static void rdpsnd_queue_init(void); |
57 |
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static void rdpsnd_queue_complete_pending(void); |
58 |
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static long rdpsnd_queue_next_completion(void); |
59 |
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|
60 |
static STREAM |
static STREAM |
61 |
rdpsnd_init_packet(uint16 type, uint16 size) |
rdpsnd_init_packet(uint16 type, uint16 size) |
79 |
channel_send(s, rdpsnd_channel); |
channel_send(s, rdpsnd_channel); |
80 |
} |
} |
81 |
|
|
82 |
void |
static void |
83 |
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
84 |
{ |
{ |
85 |
STREAM s; |
STREAM s; |
86 |
|
|
87 |
s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
88 |
out_uint16_le(s, tick + 50); |
out_uint16_le(s, tick); |
89 |
out_uint8(s, packet_index); |
out_uint8(s, packet_index); |
90 |
out_uint8(s, 0); |
out_uint8(s, 0); |
91 |
s_mark_end(s); |
s_mark_end(s); |
95 |
static void |
static void |
96 |
rdpsnd_process_negotiate(STREAM in) |
rdpsnd_process_negotiate(STREAM in) |
97 |
{ |
{ |
98 |
unsigned int in_format_count, i; |
uint16 in_format_count, i; |
99 |
|
uint8 pad; |
100 |
|
uint16 version; |
101 |
WAVEFORMATEX *format; |
WAVEFORMATEX *format; |
102 |
STREAM out; |
STREAM out; |
103 |
BOOL device_available = False; |
BOOL device_available = False; |
104 |
int readcnt; |
int readcnt; |
105 |
int discardcnt; |
int discardcnt; |
106 |
|
|
107 |
in_uint8s(in, 14); /* flags, volume, pitch, UDP port */ |
in_uint8s(in, 14); /* initial bytes not valid from server */ |
108 |
in_uint16_le(in, in_format_count); |
in_uint16_le(in, in_format_count); |
109 |
in_uint8s(in, 4); /* pad, status, pad */ |
in_uint8(in, pad); |
110 |
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in_uint16_le(in, version); |
111 |
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in_uint8s(in, 1); /* padding */ |
112 |
|
|
113 |
if (wave_out_open()) |
if (current_driver->wave_out_open()) |
114 |
{ |
{ |
115 |
wave_out_close(); |
current_driver->wave_out_close(); |
116 |
device_available = True; |
device_available = True; |
117 |
} |
} |
118 |
|
|
143 |
in_uint8a(in, format->cb, readcnt); |
in_uint8a(in, format->cb, readcnt); |
144 |
in_uint8s(in, discardcnt); |
in_uint8s(in, discardcnt); |
145 |
|
|
146 |
if (device_available && wave_out_format_supported(format)) |
if (device_available && current_driver->wave_out_format_supported(format)) |
147 |
{ |
{ |
148 |
format_count++; |
format_count++; |
149 |
if (format_count == MAX_FORMATS) |
if (format_count == MAX_FORMATS) |
159 |
out_uint16(out, 0); /* UDP port */ |
out_uint16(out, 0); /* UDP port */ |
160 |
|
|
161 |
out_uint16_le(out, format_count); |
out_uint16_le(out, format_count); |
162 |
out_uint8(out, 0x95); /* pad? */ |
out_uint8(out, 0); /* padding */ |
163 |
out_uint16_le(out, 2); /* status */ |
out_uint16_le(out, 2); /* version */ |
164 |
out_uint8(out, 0x77); /* pad? */ |
out_uint8(out, 0); /* padding */ |
165 |
|
|
166 |
for (i = 0; i < format_count; i++) |
for (i = 0; i < format_count; i++) |
167 |
{ |
{ |
180 |
} |
} |
181 |
|
|
182 |
static void |
static void |
183 |
rdpsnd_process_unknown6(STREAM in) |
rdpsnd_process_ping(STREAM in) |
184 |
{ |
{ |
185 |
uint16 unknown1, unknown2; |
uint16 tick; |
186 |
STREAM out; |
STREAM out; |
187 |
|
|
188 |
/* in_uint8s(in, 4); unknown */ |
in_uint16_le(in, tick); |
189 |
in_uint16_le(in, unknown1); |
|
190 |
in_uint16_le(in, unknown2); |
out = rdpsnd_init_packet(RDPSND_PING | 0x2300, 4); |
191 |
|
out_uint16_le(out, tick); |
192 |
out = rdpsnd_init_packet(RDPSND_UNKNOWN6 | 0x2300, 4); |
out_uint16_le(out, 0); |
|
out_uint16_le(out, unknown1); |
|
|
out_uint16_le(out, unknown2); |
|
193 |
s_mark_end(out); |
s_mark_end(out); |
194 |
rdpsnd_send(out); |
rdpsnd_send(out); |
195 |
} |
} |
199 |
{ |
{ |
200 |
uint8 type; |
uint8 type; |
201 |
uint16 datalen; |
uint16 datalen; |
202 |
uint32 volume; |
uint16 vol_left, vol_right; |
203 |
static uint16 tick, format; |
static uint16 tick, format; |
204 |
static uint8 packet_index; |
static uint8 packet_index; |
205 |
static BOOL awaiting_data_packet; |
static BOOL awaiting_data_packet; |
206 |
|
static unsigned char missing_bytes[4] = { 0, 0, 0, 0 }; |
207 |
|
|
208 |
#ifdef RDPSND_DEBUG |
#ifdef RDPSND_DEBUG |
209 |
printf("RDPSND recv:\n"); |
printf("RDPSND recv:\n"); |
220 |
|
|
221 |
if (!device_open || (format != current_format)) |
if (!device_open || (format != current_format)) |
222 |
{ |
{ |
223 |
if (!device_open && !wave_out_open()) |
if (!device_open && !current_driver->wave_out_open()) |
224 |
{ |
{ |
225 |
rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
226 |
return; |
return; |
227 |
} |
} |
228 |
if (!wave_out_set_format(&formats[format])) |
if (!current_driver->wave_out_set_format(&formats[format])) |
229 |
{ |
{ |
230 |
rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
231 |
wave_out_close(); |
current_driver->wave_out_close(); |
232 |
device_open = False; |
device_open = False; |
233 |
return; |
return; |
234 |
} |
} |
236 |
current_format = format; |
current_format = format; |
237 |
} |
} |
238 |
|
|
239 |
wave_out_write(s, tick, packet_index); |
/* Insert the 4 missing bytes retrieved from last RDPSND_WRITE */ |
240 |
|
memcpy(s->data, missing_bytes, 4); |
241 |
|
|
242 |
|
rdpsnd_queue_write(rdpsnd_dsp_process |
243 |
|
(s, current_driver, &formats[current_format]), tick, |
244 |
|
packet_index); |
245 |
awaiting_data_packet = False; |
awaiting_data_packet = False; |
246 |
return; |
return; |
247 |
} |
} |
256 |
in_uint16_le(s, tick); |
in_uint16_le(s, tick); |
257 |
in_uint16_le(s, format); |
in_uint16_le(s, format); |
258 |
in_uint8(s, packet_index); |
in_uint8(s, packet_index); |
259 |
|
/* Here are our lost bytes, but why? */ |
260 |
|
memcpy(missing_bytes, s->end - 4, 4); |
261 |
awaiting_data_packet = True; |
awaiting_data_packet = True; |
262 |
break; |
break; |
263 |
case RDPSND_CLOSE: |
case RDPSND_CLOSE: |
264 |
wave_out_close(); |
current_driver->wave_out_close(); |
265 |
device_open = False; |
device_open = False; |
266 |
break; |
break; |
267 |
case RDPSND_NEGOTIATE: |
case RDPSND_NEGOTIATE: |
268 |
rdpsnd_process_negotiate(s); |
rdpsnd_process_negotiate(s); |
269 |
break; |
break; |
270 |
case RDPSND_UNKNOWN6: |
case RDPSND_PING: |
271 |
rdpsnd_process_unknown6(s); |
rdpsnd_process_ping(s); |
272 |
break; |
break; |
273 |
case RDPSND_SET_VOLUME: |
case RDPSND_SET_VOLUME: |
274 |
in_uint32(s, volume); |
in_uint16_le(s, vol_left); |
275 |
|
in_uint16_le(s, vol_right); |
276 |
if (device_open) |
if (device_open) |
277 |
{ |
current_driver->wave_out_volume(vol_left, vol_right); |
|
wave_out_volume((volume & 0xffff), (volume & 0xffff0000) >> 16); |
|
|
} |
|
278 |
break; |
break; |
279 |
default: |
default: |
280 |
unimpl("RDPSND packet type %d\n", type); |
unimpl("RDPSND packet type %d\n", type); |
282 |
} |
} |
283 |
} |
} |
284 |
|
|
285 |
|
static BOOL |
286 |
|
rdpsnd_auto_open(void) |
287 |
|
{ |
288 |
|
static BOOL failed = False; |
289 |
|
|
290 |
|
if (!failed) |
291 |
|
{ |
292 |
|
struct audio_driver *auto_driver = current_driver; |
293 |
|
|
294 |
|
current_driver = drivers; |
295 |
|
while (current_driver != NULL) |
296 |
|
{ |
297 |
|
DEBUG(("trying %s...\n", current_driver->name)); |
298 |
|
if (current_driver->wave_out_open()) |
299 |
|
{ |
300 |
|
DEBUG(("selected %s\n", current_driver->name)); |
301 |
|
return True; |
302 |
|
} |
303 |
|
g_dsp_fd = 0; |
304 |
|
current_driver = current_driver->next; |
305 |
|
} |
306 |
|
|
307 |
|
warning("no working audio-driver found\n"); |
308 |
|
failed = True; |
309 |
|
current_driver = auto_driver; |
310 |
|
} |
311 |
|
|
312 |
|
return False; |
313 |
|
} |
314 |
|
|
315 |
|
static void |
316 |
|
rdpsnd_register_drivers(char *options) |
317 |
|
{ |
318 |
|
struct audio_driver **reg; |
319 |
|
|
320 |
|
/* The order of registrations define the probe-order |
321 |
|
when opening the device for the first time */ |
322 |
|
reg = &drivers; |
323 |
|
#if defined(RDPSND_ALSA) |
324 |
|
*reg = alsa_register(options); |
325 |
|
assert(*reg); |
326 |
|
reg = &((*reg)->next); |
327 |
|
#endif |
328 |
|
#if defined(RDPSND_SUN) |
329 |
|
*reg = sun_register(options); |
330 |
|
assert(*reg); |
331 |
|
reg = &((*reg)->next); |
332 |
|
#endif |
333 |
|
#if defined(RDPSND_OSS) |
334 |
|
*reg = oss_register(options); |
335 |
|
assert(*reg); |
336 |
|
reg = &((*reg)->next); |
337 |
|
#endif |
338 |
|
#if defined(RDPSND_SGI) |
339 |
|
*reg = sgi_register(options); |
340 |
|
assert(*reg); |
341 |
|
reg = &((*reg)->next); |
342 |
|
#endif |
343 |
|
#if defined(RDPSND_LIBAO) |
344 |
|
*reg = libao_register(options); |
345 |
|
assert(*reg); |
346 |
|
reg = &((*reg)->next); |
347 |
|
#endif |
348 |
|
*reg = NULL; |
349 |
|
} |
350 |
|
|
351 |
BOOL |
BOOL |
352 |
rdpsnd_init(void) |
rdpsnd_init(char *optarg) |
353 |
{ |
{ |
354 |
|
static struct audio_driver auto_driver; |
355 |
|
struct audio_driver *pos; |
356 |
|
char *driver = NULL, *options = NULL; |
357 |
|
|
358 |
|
drivers = NULL; |
359 |
|
|
360 |
rdpsnd_channel = |
rdpsnd_channel = |
361 |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
362 |
rdpsnd_process); |
rdpsnd_process); |
363 |
return (rdpsnd_channel != NULL); |
|
364 |
|
if (rdpsnd_channel == NULL) |
365 |
|
{ |
366 |
|
error("channel_register\n"); |
367 |
|
return False; |
368 |
|
} |
369 |
|
|
370 |
|
rdpsnd_queue_init(); |
371 |
|
|
372 |
|
if (optarg != NULL && strlen(optarg) > 0) |
373 |
|
{ |
374 |
|
driver = options = optarg; |
375 |
|
|
376 |
|
while (*options != '\0' && *options != ':') |
377 |
|
options++; |
378 |
|
|
379 |
|
if (*options == ':') |
380 |
|
{ |
381 |
|
*options = '\0'; |
382 |
|
options++; |
383 |
|
} |
384 |
|
|
385 |
|
if (*options == '\0') |
386 |
|
options = NULL; |
387 |
|
} |
388 |
|
|
389 |
|
rdpsnd_register_drivers(options); |
390 |
|
|
391 |
|
if (!driver) |
392 |
|
{ |
393 |
|
auto_driver.wave_out_open = &rdpsnd_auto_open; |
394 |
|
current_driver = &auto_driver; |
395 |
|
return True; |
396 |
|
} |
397 |
|
|
398 |
|
pos = drivers; |
399 |
|
while (pos != NULL) |
400 |
|
{ |
401 |
|
if (!strcmp(pos->name, driver)) |
402 |
|
{ |
403 |
|
DEBUG(("selected %s\n", pos->name)); |
404 |
|
current_driver = pos; |
405 |
|
return True; |
406 |
|
} |
407 |
|
pos = pos->next; |
408 |
|
} |
409 |
|
return False; |
410 |
|
} |
411 |
|
|
412 |
|
void |
413 |
|
rdpsnd_show_help(void) |
414 |
|
{ |
415 |
|
struct audio_driver *pos; |
416 |
|
|
417 |
|
rdpsnd_register_drivers(NULL); |
418 |
|
|
419 |
|
pos = drivers; |
420 |
|
while (pos != NULL) |
421 |
|
{ |
422 |
|
fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
423 |
|
pos = pos->next; |
424 |
|
} |
425 |
|
} |
426 |
|
|
427 |
|
void |
428 |
|
rdpsnd_play(void) |
429 |
|
{ |
430 |
|
current_driver->wave_out_play(); |
431 |
|
} |
432 |
|
|
433 |
|
void |
434 |
|
rdpsnd_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
435 |
|
{ |
436 |
|
long next_pending; |
437 |
|
|
438 |
|
if (g_dsp_busy) |
439 |
|
{ |
440 |
|
FD_SET(g_dsp_fd, wfds); |
441 |
|
*n = (g_dsp_fd > *n) ? g_dsp_fd : *n; |
442 |
|
} |
443 |
|
|
444 |
|
next_pending = rdpsnd_queue_next_completion(); |
445 |
|
if (next_pending >= 0) |
446 |
|
{ |
447 |
|
long cur_timeout; |
448 |
|
|
449 |
|
cur_timeout = tv->tv_sec * 1000000 + tv->tv_usec; |
450 |
|
if (cur_timeout > next_pending) |
451 |
|
{ |
452 |
|
tv->tv_sec = next_pending / 1000000; |
453 |
|
tv->tv_usec = next_pending % 1000000; |
454 |
|
} |
455 |
|
} |
456 |
|
} |
457 |
|
|
458 |
|
void |
459 |
|
rdpsnd_check_fds(fd_set * rfds, fd_set * wfds) |
460 |
|
{ |
461 |
|
rdpsnd_queue_complete_pending(); |
462 |
|
|
463 |
|
if (g_dsp_busy && FD_ISSET(g_dsp_fd, wfds)) |
464 |
|
rdpsnd_play(); |
465 |
|
} |
466 |
|
|
467 |
|
static void |
468 |
|
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
469 |
|
{ |
470 |
|
struct audio_packet *packet = &packet_queue[queue_hi]; |
471 |
|
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
472 |
|
|
473 |
|
if (next_hi == queue_pending) |
474 |
|
{ |
475 |
|
error("No space to queue audio packet\n"); |
476 |
|
return; |
477 |
|
} |
478 |
|
|
479 |
|
queue_hi = next_hi; |
480 |
|
|
481 |
|
packet->s = *s; |
482 |
|
packet->tick = tick; |
483 |
|
packet->index = index; |
484 |
|
|
485 |
|
gettimeofday(&packet->arrive_tv, NULL); |
486 |
|
|
487 |
|
if (!g_dsp_busy) |
488 |
|
current_driver->wave_out_play(); |
489 |
|
} |
490 |
|
|
491 |
|
struct audio_packet * |
492 |
|
rdpsnd_queue_current_packet(void) |
493 |
|
{ |
494 |
|
return &packet_queue[queue_lo]; |
495 |
|
} |
496 |
|
|
497 |
|
BOOL |
498 |
|
rdpsnd_queue_empty(void) |
499 |
|
{ |
500 |
|
return (queue_lo == queue_hi); |
501 |
|
} |
502 |
|
|
503 |
|
static void |
504 |
|
rdpsnd_queue_init(void) |
505 |
|
{ |
506 |
|
queue_pending = queue_lo = queue_hi = 0; |
507 |
|
} |
508 |
|
|
509 |
|
void |
510 |
|
rdpsnd_queue_next(unsigned long completed_in_us) |
511 |
|
{ |
512 |
|
struct audio_packet *packet; |
513 |
|
|
514 |
|
assert(!rdpsnd_queue_empty()); |
515 |
|
|
516 |
|
packet = &packet_queue[queue_lo]; |
517 |
|
|
518 |
|
gettimeofday(&packet->completion_tv, NULL); |
519 |
|
|
520 |
|
packet->completion_tv.tv_usec += completed_in_us; |
521 |
|
packet->completion_tv.tv_sec += packet->completion_tv.tv_usec / 1000000; |
522 |
|
packet->completion_tv.tv_usec %= 1000000; |
523 |
|
|
524 |
|
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
525 |
|
|
526 |
|
rdpsnd_queue_complete_pending(); |
527 |
|
} |
528 |
|
|
529 |
|
int |
530 |
|
rdpsnd_queue_next_tick(void) |
531 |
|
{ |
532 |
|
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
533 |
|
{ |
534 |
|
return packet_queue[(queue_lo + 1) % MAX_QUEUE].tick; |
535 |
|
} |
536 |
|
else |
537 |
|
{ |
538 |
|
return (packet_queue[queue_lo].tick + 65535) % 65536; |
539 |
|
} |
540 |
|
} |
541 |
|
|
542 |
|
static void |
543 |
|
rdpsnd_queue_complete_pending(void) |
544 |
|
{ |
545 |
|
struct timeval now; |
546 |
|
long elapsed; |
547 |
|
struct audio_packet *packet; |
548 |
|
|
549 |
|
gettimeofday(&now, NULL); |
550 |
|
|
551 |
|
while (queue_pending != queue_lo) |
552 |
|
{ |
553 |
|
packet = &packet_queue[queue_pending]; |
554 |
|
|
555 |
|
if (now.tv_sec < packet->completion_tv.tv_sec) |
556 |
|
break; |
557 |
|
|
558 |
|
if ((now.tv_sec == packet->completion_tv.tv_sec) && |
559 |
|
(now.tv_usec < packet->completion_tv.tv_usec)) |
560 |
|
break; |
561 |
|
|
562 |
|
elapsed = (packet->completion_tv.tv_sec - packet->arrive_tv.tv_sec) * 1000000 + |
563 |
|
(packet->completion_tv.tv_usec - packet->arrive_tv.tv_usec); |
564 |
|
elapsed /= 1000; |
565 |
|
|
566 |
|
xfree(packet->s.data); |
567 |
|
rdpsnd_send_completion((packet->tick + elapsed) % 65536, packet->index); |
568 |
|
queue_pending = (queue_pending + 1) % MAX_QUEUE; |
569 |
|
} |
570 |
|
} |
571 |
|
|
572 |
|
static long |
573 |
|
rdpsnd_queue_next_completion(void) |
574 |
|
{ |
575 |
|
struct audio_packet *packet; |
576 |
|
long remaining; |
577 |
|
struct timeval now; |
578 |
|
|
579 |
|
if (queue_pending == queue_lo) |
580 |
|
return -1; |
581 |
|
|
582 |
|
gettimeofday(&now, NULL); |
583 |
|
|
584 |
|
packet = &packet_queue[queue_pending]; |
585 |
|
|
586 |
|
remaining = (packet->completion_tv.tv_sec - now.tv_sec) * 1000000 + |
587 |
|
(packet->completion_tv.tv_usec - now.tv_usec); |
588 |
|
|
589 |
|
if (remaining < 0) |
590 |
|
return 0; |
591 |
|
|
592 |
|
return remaining; |
593 |
} |
} |