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 |
20 |
*/ |
*/ |
21 |
|
|
22 |
#include "rdesktop.h" |
#include "rdesktop.h" |
23 |
|
#include "rdpsnd.h" |
24 |
|
|
25 |
#define RDPSND_CLOSE 1 |
#define RDPSND_CLOSE 1 |
26 |
#define RDPSND_WRITE 2 |
#define RDPSND_WRITE 2 |
27 |
#define RDPSND_SET_VOLUME 3 |
#define RDPSND_SET_VOLUME 3 |
28 |
#define RDPSND_UNKNOWN4 4 |
#define RDPSND_UNKNOWN4 4 |
29 |
#define RDPSND_COMPLETION 5 |
#define RDPSND_COMPLETION 5 |
30 |
#define RDPSND_UNKNOWN6 6 |
#define RDPSND_SERVERTICK 6 |
31 |
#define RDPSND_NEGOTIATE 7 |
#define RDPSND_NEGOTIATE 7 |
32 |
|
|
33 |
#define MAX_FORMATS 10 |
#define MAX_FORMATS 10 |
34 |
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#define MAX_QUEUE 10 |
35 |
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|
36 |
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BOOL g_dsp_busy = False; |
37 |
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int g_dsp_fd; |
38 |
|
|
39 |
static VCHANNEL *rdpsnd_channel; |
static VCHANNEL *rdpsnd_channel; |
40 |
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static struct audio_driver *drivers = NULL; |
41 |
|
static struct audio_driver *current_driver = NULL; |
42 |
|
|
43 |
static BOOL device_open; |
static BOOL device_open; |
44 |
static WAVEFORMATEX formats[MAX_FORMATS]; |
static WAVEFORMATEX formats[MAX_FORMATS]; |
45 |
static unsigned int format_count; |
static unsigned int format_count; |
46 |
static unsigned int current_format; |
static unsigned int current_format; |
47 |
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static unsigned int queue_hi, queue_lo; |
48 |
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static struct audio_packet packet_queue[MAX_QUEUE]; |
49 |
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|
50 |
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void (*wave_out_play) (void); |
51 |
|
|
52 |
STREAM |
static STREAM |
53 |
rdpsnd_init_packet(uint16 type, uint16 size) |
rdpsnd_init_packet(uint16 type, uint16 size) |
54 |
{ |
{ |
55 |
STREAM s; |
STREAM s; |
56 |
|
|
57 |
s = channel_init(rdpsnd_channel, size+4); |
s = channel_init(rdpsnd_channel, size + 4); |
58 |
out_uint16_le(s, type); |
out_uint16_le(s, type); |
59 |
out_uint16_le(s, size); |
out_uint16_le(s, size); |
60 |
return s; |
return s; |
61 |
} |
} |
62 |
|
|
63 |
void |
static void |
64 |
rdpsnd_send(STREAM s) |
rdpsnd_send(STREAM s) |
65 |
{ |
{ |
66 |
#ifdef RDPSND_DEBUG |
#ifdef RDPSND_DEBUG |
67 |
printf("RDPSND send:\n"); |
printf("RDPSND send:\n"); |
68 |
hexdump(s->channel_hdr+8, s->end-s->channel_hdr-8); |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); |
69 |
#endif |
#endif |
70 |
|
|
71 |
channel_send(s, rdpsnd_channel); |
channel_send(s, rdpsnd_channel); |
72 |
} |
} |
73 |
|
|
74 |
void rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
void |
75 |
|
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
76 |
{ |
{ |
77 |
STREAM s; |
STREAM s; |
78 |
|
|
79 |
s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
s = rdpsnd_init_packet(RDPSND_COMPLETION, 4); |
80 |
out_uint16_le(s, tick+50); |
out_uint16_le(s, tick); |
81 |
out_uint8(s, packet_index); |
out_uint8(s, packet_index); |
82 |
out_uint8(s, 0); |
out_uint8(s, 0); |
83 |
s_mark_end(s); |
s_mark_end(s); |
84 |
rdpsnd_send(s); |
rdpsnd_send(s); |
85 |
} |
} |
86 |
|
|
87 |
void |
static void |
88 |
rdpsnd_process_negotiate(STREAM in) |
rdpsnd_process_negotiate(STREAM in) |
89 |
{ |
{ |
90 |
unsigned int in_format_count, i; |
unsigned int in_format_count, i; |
91 |
WAVEFORMATEX *format; |
WAVEFORMATEX *format; |
92 |
STREAM out; |
STREAM out; |
93 |
BOOL device_available = False; |
BOOL device_available = False; |
94 |
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int readcnt; |
95 |
|
int discardcnt; |
96 |
|
|
97 |
in_uint8s(in, 14); /* flags, volume, pitch, UDP port */ |
in_uint8s(in, 14); /* flags, volume, pitch, UDP port */ |
98 |
in_uint16_le(in, in_format_count); |
in_uint16_le(in, in_format_count); |
99 |
in_uint8s(in, 4); /* pad, status, pad */ |
in_uint8s(in, 4); /* pad, status, pad */ |
100 |
|
|
101 |
if (wave_out_open()) |
if (current_driver->wave_out_open()) |
102 |
{ |
{ |
103 |
wave_out_close(); |
current_driver->wave_out_close(); |
104 |
device_available = True; |
device_available = True; |
105 |
} |
} |
106 |
|
|
107 |
format_count = 0; |
format_count = 0; |
108 |
if (s_check_rem(in, 18*in_format_count)) |
if (s_check_rem(in, 18 * in_format_count)) |
109 |
{ |
{ |
110 |
for (i = 0; i < in_format_count; i++) |
for (i = 0; i < in_format_count; i++) |
111 |
{ |
{ |
119 |
in_uint16_le(in, format->cbSize); |
in_uint16_le(in, format->cbSize); |
120 |
|
|
121 |
/* read in the buffer of unknown use */ |
/* read in the buffer of unknown use */ |
122 |
int readcnt = format->cbSize; |
readcnt = format->cbSize; |
123 |
int discardcnt = 0; |
discardcnt = 0; |
124 |
if (format->cbSize > MAX_CBSIZE) |
if (format->cbSize > MAX_CBSIZE) |
125 |
{ |
{ |
126 |
fprintf(stderr, "cbSize too large for buffer: %d\n", format->cbSize); |
fprintf(stderr, "cbSize too large for buffer: %d\n", |
127 |
|
format->cbSize); |
128 |
readcnt = MAX_CBSIZE; |
readcnt = MAX_CBSIZE; |
129 |
discardcnt = format->cbSize - MAX_CBSIZE; |
discardcnt = format->cbSize - MAX_CBSIZE; |
130 |
} |
} |
131 |
in_uint8a(in, format->cb, readcnt); |
in_uint8a(in, format->cb, readcnt); |
132 |
in_uint8s(in, discardcnt); |
in_uint8s(in, discardcnt); |
133 |
|
|
134 |
if (device_available && wave_out_format_supported(format)) |
if (device_available && current_driver->wave_out_format_supported(format)) |
135 |
{ |
{ |
136 |
format_count++; |
format_count++; |
137 |
if (format_count == MAX_FORMATS) |
if (format_count == MAX_FORMATS) |
140 |
} |
} |
141 |
} |
} |
142 |
|
|
143 |
out = rdpsnd_init_packet(RDPSND_NEGOTIATE | 0x200, 20 + 18*format_count); |
out = rdpsnd_init_packet(RDPSND_NEGOTIATE | 0x200, 20 + 18 * format_count); |
144 |
out_uint32_le(out, 3); /* flags */ |
out_uint32_le(out, 3); /* flags */ |
145 |
out_uint32(out, 0xffffffff); /* volume */ |
out_uint32(out, 0xffffffff); /* volume */ |
146 |
out_uint32(out, 0); /* pitch */ |
out_uint32(out, 0); /* pitch */ |
147 |
out_uint16(out, 0); /* UDP port */ |
out_uint16(out, 0); /* UDP port */ |
148 |
|
|
149 |
out_uint16_le(out, format_count); |
out_uint16_le(out, format_count); |
150 |
out_uint8(out, 0x95); /* pad? */ |
out_uint8(out, 0x95); /* pad? */ |
151 |
out_uint16_le(out, 2); /* status */ |
out_uint16_le(out, 2); /* status */ |
152 |
out_uint8(out, 0x77); /* pad? */ |
out_uint8(out, 0x77); /* pad? */ |
153 |
|
|
154 |
for (i = 0; i < format_count; i++) |
for (i = 0; i < format_count; i++) |
155 |
{ |
{ |
160 |
out_uint32_le(out, format->nAvgBytesPerSec); |
out_uint32_le(out, format->nAvgBytesPerSec); |
161 |
out_uint16_le(out, format->nBlockAlign); |
out_uint16_le(out, format->nBlockAlign); |
162 |
out_uint16_le(out, format->wBitsPerSample); |
out_uint16_le(out, format->wBitsPerSample); |
163 |
out_uint16(out, 0); /* cbSize */ |
out_uint16(out, 0); /* cbSize */ |
164 |
} |
} |
165 |
|
|
166 |
s_mark_end(out); |
s_mark_end(out); |
167 |
rdpsnd_send(out); |
rdpsnd_send(out); |
168 |
} |
} |
169 |
|
|
170 |
void |
static void |
171 |
rdpsnd_process_unknown6(STREAM in) |
rdpsnd_process_servertick(STREAM in) |
172 |
{ |
{ |
173 |
uint16 unknown1, unknown2; |
uint16 tick1, tick2; |
174 |
STREAM out; |
STREAM out; |
175 |
|
|
176 |
/* in_uint8s(in, 4); unknown */ |
/* in_uint8s(in, 4); unknown */ |
177 |
in_uint16_le(in, unknown1); |
in_uint16_le(in, tick1); |
178 |
in_uint16_le(in, unknown2); |
in_uint16_le(in, tick2); |
179 |
|
|
180 |
out = rdpsnd_init_packet(RDPSND_UNKNOWN6 | 0x2300, 4); |
out = rdpsnd_init_packet(RDPSND_SERVERTICK | 0x2300, 4); |
181 |
out_uint16_le(out, unknown1); |
out_uint16_le(out, tick1); |
182 |
out_uint16_le(out, unknown2); |
out_uint16_le(out, tick2); |
183 |
s_mark_end(out); |
s_mark_end(out); |
184 |
rdpsnd_send(out); |
rdpsnd_send(out); |
185 |
} |
} |
186 |
|
|
187 |
void |
static void |
188 |
rdpsnd_process(STREAM s) |
rdpsnd_process(STREAM s) |
189 |
{ |
{ |
190 |
uint8 type; |
uint8 type; |
196 |
|
|
197 |
#ifdef RDPSND_DEBUG |
#ifdef RDPSND_DEBUG |
198 |
printf("RDPSND recv:\n"); |
printf("RDPSND recv:\n"); |
199 |
hexdump(s->p, s->end-s->p); |
hexdump(s->p, s->end - s->p); |
200 |
#endif |
#endif |
201 |
|
|
202 |
if (awaiting_data_packet) |
if (awaiting_data_packet) |
209 |
|
|
210 |
if (!device_open || (format != current_format)) |
if (!device_open || (format != current_format)) |
211 |
{ |
{ |
212 |
if (!device_open && !wave_out_open()) |
if (!device_open && !current_driver->wave_out_open()) |
213 |
{ |
{ |
214 |
rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
215 |
return; |
return; |
216 |
} |
} |
217 |
if (!wave_out_set_format(&formats[format])) |
if (!current_driver->wave_out_set_format(&formats[format])) |
218 |
{ |
{ |
219 |
rdpsnd_send_completion(tick, packet_index); |
rdpsnd_send_completion(tick, packet_index); |
220 |
wave_out_close(); |
current_driver->wave_out_close(); |
221 |
device_open = False; |
device_open = False; |
222 |
return; |
return; |
223 |
} |
} |
225 |
current_format = format; |
current_format = format; |
226 |
} |
} |
227 |
|
|
228 |
wave_out_write(s, tick, packet_index); |
current_driver->wave_out_write(s, tick, packet_index); |
229 |
awaiting_data_packet = False; |
awaiting_data_packet = False; |
230 |
return; |
return; |
231 |
} |
} |
232 |
|
|
233 |
in_uint8(s, type); |
in_uint8(s, type); |
234 |
in_uint8s(s, 1); /* unknown? */ |
in_uint8s(s, 1); /* unknown? */ |
235 |
in_uint16_le(s, datalen); |
in_uint16_le(s, datalen); |
236 |
|
|
237 |
switch (type) |
switch (type) |
238 |
{ |
{ |
239 |
case RDPSND_WRITE: |
case RDPSND_WRITE: |
240 |
in_uint16_le(s, tick); |
in_uint16_le(s, tick); |
241 |
in_uint16_le(s, format); |
in_uint16_le(s, format); |
242 |
in_uint8(s, packet_index); |
in_uint8(s, packet_index); |
243 |
awaiting_data_packet = True; |
awaiting_data_packet = True; |
244 |
break; |
break; |
245 |
case RDPSND_CLOSE: |
case RDPSND_CLOSE: |
246 |
wave_out_close(); |
current_driver->wave_out_close(); |
247 |
device_open = False; |
device_open = False; |
248 |
break; |
break; |
249 |
case RDPSND_NEGOTIATE: |
case RDPSND_NEGOTIATE: |
250 |
rdpsnd_process_negotiate(s); |
rdpsnd_process_negotiate(s); |
251 |
break; |
break; |
252 |
case RDPSND_UNKNOWN6: |
case RDPSND_SERVERTICK: |
253 |
rdpsnd_process_unknown6(s); |
rdpsnd_process_servertick(s); |
254 |
break; |
break; |
255 |
case RDPSND_SET_VOLUME: |
case RDPSND_SET_VOLUME: |
256 |
in_uint32(s, volume); |
in_uint32(s, volume); |
257 |
if ( device_open ) |
if (device_open) |
258 |
{ |
{ |
259 |
wave_out_volume((volume & 0xffff), (volume & 0xffff0000) >> 16); |
current_driver->wave_out_volume((volume & 0xffff), |
260 |
} |
(volume & 0xffff0000) >> 16); |
261 |
break; |
} |
262 |
default: |
break; |
263 |
unimpl("RDPSND packet type %d\n", type); |
default: |
264 |
break; |
unimpl("RDPSND packet type %d\n", type); |
265 |
|
break; |
266 |
} |
} |
267 |
} |
} |
268 |
|
|
272 |
rdpsnd_channel = |
rdpsnd_channel = |
273 |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
274 |
rdpsnd_process); |
rdpsnd_process); |
275 |
|
|
276 |
return (rdpsnd_channel != NULL); |
return (rdpsnd_channel != NULL); |
277 |
} |
} |
278 |
|
|
279 |
|
BOOL |
280 |
|
rdpsnd_auto_open(void) |
281 |
|
{ |
282 |
|
current_driver = drivers; |
283 |
|
while (current_driver != NULL) |
284 |
|
{ |
285 |
|
DEBUG(("trying %s...\n", current_driver->name)); |
286 |
|
if (current_driver->wave_out_open()) |
287 |
|
{ |
288 |
|
DEBUG(("selected %s\n", current_driver->name)); |
289 |
|
return True; |
290 |
|
} |
291 |
|
g_dsp_fd = 0; |
292 |
|
current_driver = current_driver->next; |
293 |
|
} |
294 |
|
|
295 |
|
warning("no working audio-driver found\n"); |
296 |
|
|
297 |
|
return False; |
298 |
|
} |
299 |
|
|
300 |
|
void |
301 |
|
rdpsnd_register_drivers(char *options) |
302 |
|
{ |
303 |
|
struct audio_driver **reg; |
304 |
|
|
305 |
|
/* The order of registrations define the probe-order |
306 |
|
when opening the device for the first time */ |
307 |
|
reg = &drivers; |
308 |
|
#if defined(RDPSND_ALSA) |
309 |
|
*reg = alsa_register(options); |
310 |
|
reg = &((*reg)->next); |
311 |
|
#endif |
312 |
|
#if defined(RDPSND_OSS) |
313 |
|
*reg = oss_register(options); |
314 |
|
reg = &((*reg)->next); |
315 |
|
#endif |
316 |
|
#if defined(RDPSND_SUN) |
317 |
|
*reg = sun_register(options); |
318 |
|
reg = &((*reg)->next); |
319 |
|
#endif |
320 |
|
#if defined(RDPSND_SGI) |
321 |
|
*reg = sgi_register(options); |
322 |
|
reg = &((*reg)->next); |
323 |
|
#endif |
324 |
|
#if defined(RDPSND_LIBAO) |
325 |
|
*reg = libao_register(options); |
326 |
|
reg = &((*reg)->next); |
327 |
|
#endif |
328 |
|
} |
329 |
|
|
330 |
|
BOOL |
331 |
|
rdpsnd_select_driver(char *driver, char *options) |
332 |
|
{ |
333 |
|
static struct audio_driver auto_driver; |
334 |
|
struct audio_driver *pos; |
335 |
|
|
336 |
|
drivers = NULL; |
337 |
|
rdpsnd_register_drivers(options); |
338 |
|
|
339 |
|
if (!driver) |
340 |
|
{ |
341 |
|
auto_driver.wave_out_open = &rdpsnd_auto_open; |
342 |
|
current_driver = &auto_driver; |
343 |
|
return True; |
344 |
|
} |
345 |
|
|
346 |
|
pos = drivers; |
347 |
|
while (pos != NULL) |
348 |
|
{ |
349 |
|
if (!strcmp(pos->name, driver)) |
350 |
|
{ |
351 |
|
DEBUG(("selected %s\n", pos->name)); |
352 |
|
current_driver = pos; |
353 |
|
return True; |
354 |
|
} |
355 |
|
pos = pos->next; |
356 |
|
} |
357 |
|
return False; |
358 |
|
} |
359 |
|
|
360 |
|
void |
361 |
|
rdpsnd_show_help(void) |
362 |
|
{ |
363 |
|
struct audio_driver *pos; |
364 |
|
|
365 |
|
rdpsnd_register_drivers(NULL); |
366 |
|
|
367 |
|
pos = drivers; |
368 |
|
while (pos != NULL) |
369 |
|
{ |
370 |
|
fprintf(stderr, " %s:\t%s\n", pos->name, pos->description); |
371 |
|
pos = pos->next; |
372 |
|
} |
373 |
|
} |
374 |
|
|
375 |
|
inline void |
376 |
|
rdpsnd_play(void) |
377 |
|
{ |
378 |
|
current_driver->wave_out_play(); |
379 |
|
} |
380 |
|
|
381 |
|
void |
382 |
|
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
383 |
|
{ |
384 |
|
struct audio_packet *packet = &packet_queue[queue_hi]; |
385 |
|
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
386 |
|
|
387 |
|
if (next_hi == queue_lo) |
388 |
|
{ |
389 |
|
error("No space to queue audio packet\n"); |
390 |
|
return; |
391 |
|
} |
392 |
|
|
393 |
|
queue_hi = next_hi; |
394 |
|
|
395 |
|
packet->s = *s; |
396 |
|
packet->tick = tick; |
397 |
|
packet->index = index; |
398 |
|
packet->s.p += 4; |
399 |
|
|
400 |
|
/* we steal the data buffer from s, give it a new one */ |
401 |
|
s->data = malloc(s->size); |
402 |
|
|
403 |
|
if (!g_dsp_busy) |
404 |
|
current_driver->wave_out_play(); |
405 |
|
} |
406 |
|
|
407 |
|
inline struct audio_packet * |
408 |
|
rdpsnd_queue_current_packet(void) |
409 |
|
{ |
410 |
|
return &packet_queue[queue_lo]; |
411 |
|
} |
412 |
|
|
413 |
|
inline BOOL |
414 |
|
rdpsnd_queue_empty(void) |
415 |
|
{ |
416 |
|
return (queue_lo == queue_hi); |
417 |
|
} |
418 |
|
|
419 |
|
inline void |
420 |
|
rdpsnd_queue_init(void) |
421 |
|
{ |
422 |
|
queue_lo = queue_hi = 0; |
423 |
|
} |
424 |
|
|
425 |
|
inline void |
426 |
|
rdpsnd_queue_next(void) |
427 |
|
{ |
428 |
|
free(packet_queue[queue_lo].s.data); |
429 |
|
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
430 |
|
} |
431 |
|
|
432 |
|
inline int |
433 |
|
rdpsnd_queue_next_tick(void) |
434 |
|
{ |
435 |
|
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
436 |
|
{ |
437 |
|
return packet_queue[(queue_lo + 1) % MAX_QUEUE].tick; |
438 |
|
} |
439 |
|
else |
440 |
|
{ |
441 |
|
return (packet_queue[queue_lo].tick + 65535) % 65536; |
442 |
|
} |
443 |
|
} |