1 |
/* -*- c-basic-offset: 8 -*- |
/* -*- 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 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB |
5 |
Copyright (C) Matthew Chapman 2003 |
Copyright (C) Matthew Chapman 2003 |
6 |
Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
7 |
|
|
20 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 |
*/ |
*/ |
22 |
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23 |
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#include <assert.h> |
24 |
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25 |
#include "rdesktop.h" |
#include "rdesktop.h" |
26 |
#include "rdpsnd.h" |
#include "rdpsnd.h" |
27 |
#include "rdpsnd_dsp.h" |
#include "rdpsnd_dsp.h" |
31 |
#define RDPSND_SET_VOLUME 3 |
#define RDPSND_SET_VOLUME 3 |
32 |
#define RDPSND_UNKNOWN4 4 |
#define RDPSND_UNKNOWN4 4 |
33 |
#define RDPSND_COMPLETION 5 |
#define RDPSND_COMPLETION 5 |
34 |
#define RDPSND_SERVERTICK 6 |
#define RDPSND_PING 6 |
35 |
#define RDPSND_NEGOTIATE 7 |
#define RDPSND_NEGOTIATE 7 |
36 |
|
|
37 |
#define MAX_FORMATS 10 |
#define MAX_FORMATS 10 |
48 |
static WAVEFORMATEX formats[MAX_FORMATS]; |
static WAVEFORMATEX formats[MAX_FORMATS]; |
49 |
static unsigned int format_count; |
static unsigned int format_count; |
50 |
static unsigned int current_format; |
static unsigned int current_format; |
51 |
unsigned int queue_hi, queue_lo; |
unsigned int queue_hi, queue_lo, queue_pending; |
52 |
struct audio_packet packet_queue[MAX_QUEUE]; |
struct audio_packet packet_queue[MAX_QUEUE]; |
53 |
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54 |
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static uint8 packet_opcode; |
55 |
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static struct stream packet; |
56 |
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57 |
void (*wave_out_play) (void); |
void (*wave_out_play) (void); |
58 |
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59 |
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static void rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index); |
60 |
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static void rdpsnd_queue_init(void); |
61 |
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static void rdpsnd_queue_complete_pending(void); |
62 |
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static long rdpsnd_queue_next_completion(void); |
63 |
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64 |
static STREAM |
static STREAM |
65 |
rdpsnd_init_packet(uint16 type, uint16 size) |
rdpsnd_init_packet(uint16 type, uint16 size) |
66 |
{ |
{ |
75 |
static void |
static void |
76 |
rdpsnd_send(STREAM s) |
rdpsnd_send(STREAM s) |
77 |
{ |
{ |
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#ifdef RDPSND_DEBUG |
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printf("RDPSND send:\n"); |
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hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); |
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#endif |
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78 |
channel_send(s, rdpsnd_channel); |
channel_send(s, rdpsnd_channel); |
79 |
} |
} |
80 |
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81 |
void |
static void |
82 |
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
rdpsnd_send_completion(uint16 tick, uint8 packet_index) |
83 |
{ |
{ |
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STREAM s; |
STREAM s; |
89 |
out_uint8(s, 0); |
out_uint8(s, 0); |
90 |
s_mark_end(s); |
s_mark_end(s); |
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rdpsnd_send(s); |
rdpsnd_send(s); |
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93 |
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DEBUG_SOUND(("RDPSND: -> RDPSND_COMPLETION(tick: %u, index: %u)\n", |
94 |
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(unsigned) tick, (unsigned) packet_index)); |
95 |
} |
} |
96 |
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97 |
static void |
static void |
98 |
rdpsnd_process_negotiate(STREAM in) |
rdpsnd_process_negotiate(STREAM in) |
99 |
{ |
{ |
100 |
unsigned int in_format_count, i; |
uint16 in_format_count, i; |
101 |
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uint8 pad; |
102 |
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uint16 version; |
103 |
WAVEFORMATEX *format; |
WAVEFORMATEX *format; |
104 |
STREAM out; |
STREAM out; |
105 |
BOOL device_available = False; |
BOOL device_available = False; |
106 |
int readcnt; |
int readcnt; |
107 |
int discardcnt; |
int discardcnt; |
108 |
|
|
109 |
in_uint8s(in, 14); /* flags, volume, pitch, UDP port */ |
in_uint8s(in, 14); /* initial bytes not valid from server */ |
110 |
in_uint16_le(in, in_format_count); |
in_uint16_le(in, in_format_count); |
111 |
in_uint8s(in, 4); /* pad, status, pad */ |
in_uint8(in, pad); |
112 |
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in_uint16_le(in, version); |
113 |
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in_uint8s(in, 1); /* padding */ |
114 |
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115 |
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DEBUG_SOUND(("RDPSND: RDPSND_NEGOTIATE(formats: %d, pad1: 0x%02x, version: %x)\n", |
116 |
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(int) in_format_count, (unsigned) pad1, (unsigned) version)); |
117 |
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118 |
if (current_driver->wave_out_open()) |
if (current_driver->wave_out_open()) |
119 |
{ |
{ |
164 |
out_uint16(out, 0); /* UDP port */ |
out_uint16(out, 0); /* UDP port */ |
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out_uint16_le(out, format_count); |
out_uint16_le(out, format_count); |
167 |
out_uint8(out, 0x95); /* pad? */ |
out_uint8(out, 0); /* padding */ |
168 |
out_uint16_le(out, 2); /* status */ |
out_uint16_le(out, 2); /* version */ |
169 |
out_uint8(out, 0x77); /* pad? */ |
out_uint8(out, 0); /* padding */ |
170 |
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|
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for (i = 0; i < format_count; i++) |
for (i = 0; i < format_count; i++) |
172 |
{ |
{ |
181 |
} |
} |
182 |
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183 |
s_mark_end(out); |
s_mark_end(out); |
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185 |
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DEBUG_SOUND(("RDPSND: -> RDPSND_NEGOTIATE(formats: %d)\n", (int) format_count)); |
186 |
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|
187 |
rdpsnd_send(out); |
rdpsnd_send(out); |
188 |
} |
} |
189 |
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190 |
static void |
static void |
191 |
rdpsnd_process_servertick(STREAM in) |
rdpsnd_process_ping(STREAM in) |
192 |
{ |
{ |
193 |
uint16 tick1, tick2; |
uint16 tick; |
194 |
STREAM out; |
STREAM out; |
195 |
|
|
196 |
/* in_uint8s(in, 4); unknown */ |
in_uint16_le(in, tick); |
197 |
in_uint16_le(in, tick1); |
|
198 |
in_uint16_le(in, tick2); |
DEBUG_SOUND(("RDPSND: RDPSND_PING(tick: 0x%04x)\n", (unsigned) tick)); |
199 |
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|
200 |
out = rdpsnd_init_packet(RDPSND_SERVERTICK | 0x2300, 4); |
out = rdpsnd_init_packet(RDPSND_PING | 0x2300, 4); |
201 |
out_uint16_le(out, tick1); |
out_uint16_le(out, tick); |
202 |
out_uint16_le(out, tick2); |
out_uint16_le(out, 0); |
203 |
s_mark_end(out); |
s_mark_end(out); |
204 |
rdpsnd_send(out); |
rdpsnd_send(out); |
205 |
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206 |
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DEBUG_SOUND(("RDPSND: -> (tick: 0x%04x)\n", (unsigned) tick)); |
207 |
} |
} |
208 |
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|
209 |
static void |
static void |
210 |
rdpsnd_process(STREAM s) |
rdpsnd_process_packet(uint8 opcode, STREAM s) |
211 |
{ |
{ |
212 |
uint8 type; |
uint16 vol_left, vol_right; |
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uint16 datalen; |
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uint32 volume; |
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213 |
static uint16 tick, format; |
static uint16 tick, format; |
214 |
static uint8 packet_index; |
static uint8 packet_index; |
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static BOOL awaiting_data_packet; |
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static unsigned char missing_bytes[4] = { 0, 0, 0, 0 }; |
|
215 |
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216 |
#ifdef RDPSND_DEBUG |
switch (opcode) |
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printf("RDPSND recv:\n"); |
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hexdump(s->p, s->end - s->p); |
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#endif |
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if (awaiting_data_packet) |
|
217 |
{ |
{ |
218 |
if (format >= MAX_FORMATS) |
case RDPSND_WRITE: |
219 |
{ |
in_uint16_le(s, tick); |
220 |
error("RDPSND: Invalid format index\n"); |
in_uint16_le(s, format); |
221 |
return; |
in_uint8(s, packet_index); |
222 |
} |
in_uint8s(s, 3); |
223 |
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DEBUG_SOUND(("RDPSND: RDPSND_WRITE(tick: %u, format: %u, index: %u, data: %u bytes)\n", (unsigned) tick, (unsigned) format, (unsigned) packet_index, (unsigned) s->size - 8)); |
224 |
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|
225 |
if (!device_open || (format != current_format)) |
if (format >= MAX_FORMATS) |
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{ |
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if (!device_open && !current_driver->wave_out_open()) |
|
226 |
{ |
{ |
227 |
rdpsnd_send_completion(tick, packet_index); |
error("RDPSND: Invalid format index\n"); |
228 |
return; |
break; |
229 |
} |
} |
230 |
if (!current_driver->wave_out_set_format(&formats[format])) |
|
231 |
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if (!device_open || (format != current_format)) |
232 |
{ |
{ |
233 |
rdpsnd_send_completion(tick, packet_index); |
if (!device_open && !current_driver->wave_out_open()) |
234 |
current_driver->wave_out_close(); |
{ |
235 |
device_open = False; |
rdpsnd_send_completion(tick, packet_index); |
236 |
return; |
break; |
237 |
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} |
238 |
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if (!current_driver->wave_out_set_format(&formats[format])) |
239 |
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{ |
240 |
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rdpsnd_send_completion(tick, packet_index); |
241 |
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current_driver->wave_out_close(); |
242 |
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device_open = False; |
243 |
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break; |
244 |
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} |
245 |
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device_open = True; |
246 |
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current_format = format; |
247 |
} |
} |
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device_open = True; |
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current_format = format; |
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} |
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248 |
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|
249 |
/* Insert the 4 missing bytes retrieved from last RDPSND_WRITE */ |
rdpsnd_queue_write(rdpsnd_dsp_process |
250 |
memcpy(s->data, missing_bytes, 4); |
(s->p, s->end - s->p, current_driver, |
251 |
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&formats[current_format]), tick, packet_index); |
252 |
current_driver-> |
return; |
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wave_out_write(rdpsnd_dsp_process |
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(s, current_driver, &formats[current_format]), tick, |
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packet_index); |
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awaiting_data_packet = False; |
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return; |
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} |
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in_uint8(s, type); |
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in_uint8s(s, 1); /* unknown? */ |
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in_uint16_le(s, datalen); |
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switch (type) |
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{ |
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case RDPSND_WRITE: |
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in_uint16_le(s, tick); |
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in_uint16_le(s, format); |
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in_uint8(s, packet_index); |
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/* Here are our lost bytes, but why? */ |
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memcpy(missing_bytes, s->end - 4, 4); |
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awaiting_data_packet = True; |
|
253 |
break; |
break; |
254 |
case RDPSND_CLOSE: |
case RDPSND_CLOSE: |
255 |
|
DEBUG_SOUND(("RDPSND: RDPSND_CLOSE()\n")); |
256 |
current_driver->wave_out_close(); |
current_driver->wave_out_close(); |
257 |
device_open = False; |
device_open = False; |
258 |
break; |
break; |
259 |
case RDPSND_NEGOTIATE: |
case RDPSND_NEGOTIATE: |
260 |
rdpsnd_process_negotiate(s); |
rdpsnd_process_negotiate(s); |
261 |
break; |
break; |
262 |
case RDPSND_SERVERTICK: |
case RDPSND_PING: |
263 |
rdpsnd_process_servertick(s); |
rdpsnd_process_ping(s); |
264 |
break; |
break; |
265 |
case RDPSND_SET_VOLUME: |
case RDPSND_SET_VOLUME: |
266 |
in_uint32(s, volume); |
in_uint16_le(s, vol_left); |
267 |
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in_uint16_le(s, vol_right); |
268 |
|
DEBUG_SOUND(("RDPSND: RDPSND_VOLUME(left: 0x%04x (%u %%), right: 0x%04x (%u %%))\n", (unsigned) vol_left, (unsigned) vol_left / 655, (unsigned) vol_right, (unsigned) vol_right / 655)); |
269 |
if (device_open) |
if (device_open) |
270 |
{ |
current_driver->wave_out_volume(vol_left, vol_right); |
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current_driver->wave_out_volume((volume & 0xffff), |
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(volume & 0xffff0000) >> 16); |
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} |
|
271 |
break; |
break; |
272 |
default: |
default: |
273 |
unimpl("RDPSND packet type %d\n", type); |
unimpl("RDPSND packet type %x\n", opcode); |
274 |
break; |
break; |
275 |
} |
} |
276 |
} |
} |
277 |
|
|
278 |
BOOL |
static void |
279 |
rdpsnd_init(void) |
rdpsnd_process(STREAM s) |
280 |
{ |
{ |
281 |
rdpsnd_channel = |
uint16 len; |
282 |
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
|
283 |
rdpsnd_process); |
while (!s_check_end(s)) |
284 |
|
{ |
285 |
|
/* New packet */ |
286 |
|
if (packet.size == 0) |
287 |
|
{ |
288 |
|
if ((s->end - s->p) < 4) |
289 |
|
{ |
290 |
|
error("RDPSND: Split at packet header. Things will go south from here...\n"); |
291 |
|
return; |
292 |
|
} |
293 |
|
in_uint8(s, packet_opcode); |
294 |
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in_uint8s(s, 1); /* Padding */ |
295 |
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in_uint16_le(s, len); |
296 |
|
|
297 |
|
DEBUG_SOUND(("RDPSND: == Opcode %x Length: %d ==\n", |
298 |
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(int) packet_opcode, (int) len)); |
299 |
|
|
300 |
|
packet.p = packet.data; |
301 |
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packet.end = packet.data + len; |
302 |
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packet.size = len; |
303 |
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} |
304 |
|
else |
305 |
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{ |
306 |
|
len = MIN(s->end - s->p, packet.end - packet.p); |
307 |
|
|
308 |
return (rdpsnd_channel != NULL); |
/* Microsoft's server is so broken it's not even funny... */ |
309 |
|
if (packet_opcode == RDPSND_WRITE) |
310 |
|
{ |
311 |
|
if ((packet.p - packet.data) < 12) |
312 |
|
len = MIN(len, 12 - (packet.p - packet.data)); |
313 |
|
else if ((packet.p - packet.data) == 12) |
314 |
|
{ |
315 |
|
DEBUG_SOUND(("RDPSND: Eating 4 bytes of %d bytes...\n", |
316 |
|
len)); |
317 |
|
in_uint8s(s, 4); |
318 |
|
len -= 4; |
319 |
|
} |
320 |
|
} |
321 |
|
|
322 |
|
in_uint8a(s, packet.p, len); |
323 |
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packet.p += len; |
324 |
|
} |
325 |
|
|
326 |
|
/* Packet fully assembled */ |
327 |
|
if (packet.p == packet.end) |
328 |
|
{ |
329 |
|
packet.p = packet.data; |
330 |
|
rdpsnd_process_packet(packet_opcode, &packet); |
331 |
|
packet.size = 0; |
332 |
|
} |
333 |
|
} |
334 |
} |
} |
335 |
|
|
336 |
BOOL |
static BOOL |
337 |
rdpsnd_auto_open(void) |
rdpsnd_auto_open(void) |
338 |
{ |
{ |
339 |
current_driver = drivers; |
static BOOL failed = False; |
340 |
while (current_driver != NULL) |
|
341 |
|
if (!failed) |
342 |
{ |
{ |
343 |
DEBUG(("trying %s...\n", current_driver->name)); |
struct audio_driver *auto_driver = current_driver; |
344 |
if (current_driver->wave_out_open()) |
|
345 |
|
current_driver = drivers; |
346 |
|
while (current_driver != NULL) |
347 |
{ |
{ |
348 |
DEBUG(("selected %s\n", current_driver->name)); |
DEBUG(("trying %s...\n", current_driver->name)); |
349 |
return True; |
if (current_driver->wave_out_open()) |
350 |
|
{ |
351 |
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DEBUG(("selected %s\n", current_driver->name)); |
352 |
|
return True; |
353 |
|
} |
354 |
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g_dsp_fd = 0; |
355 |
|
current_driver = current_driver->next; |
356 |
} |
} |
|
g_dsp_fd = 0; |
|
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current_driver = current_driver->next; |
|
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} |
|
357 |
|
|
358 |
warning("no working audio-driver found\n"); |
warning("no working audio-driver found\n"); |
359 |
|
failed = True; |
360 |
|
current_driver = auto_driver; |
361 |
|
} |
362 |
|
|
363 |
return False; |
return False; |
364 |
} |
} |
365 |
|
|
366 |
void |
static void |
367 |
rdpsnd_register_drivers(char *options) |
rdpsnd_register_drivers(char *options) |
368 |
{ |
{ |
369 |
struct audio_driver **reg; |
struct audio_driver **reg; |
373 |
reg = &drivers; |
reg = &drivers; |
374 |
#if defined(RDPSND_ALSA) |
#if defined(RDPSND_ALSA) |
375 |
*reg = alsa_register(options); |
*reg = alsa_register(options); |
376 |
|
assert(*reg); |
377 |
reg = &((*reg)->next); |
reg = &((*reg)->next); |
378 |
#endif |
#endif |
379 |
#if defined(RDPSND_SUN) |
#if defined(RDPSND_SUN) |
380 |
*reg = sun_register(options); |
*reg = sun_register(options); |
381 |
|
assert(*reg); |
382 |
reg = &((*reg)->next); |
reg = &((*reg)->next); |
383 |
#endif |
#endif |
384 |
#if defined(RDPSND_OSS) |
#if defined(RDPSND_OSS) |
385 |
*reg = oss_register(options); |
*reg = oss_register(options); |
386 |
|
assert(*reg); |
387 |
reg = &((*reg)->next); |
reg = &((*reg)->next); |
388 |
#endif |
#endif |
389 |
#if defined(RDPSND_SGI) |
#if defined(RDPSND_SGI) |
390 |
*reg = sgi_register(options); |
*reg = sgi_register(options); |
391 |
|
assert(*reg); |
392 |
reg = &((*reg)->next); |
reg = &((*reg)->next); |
393 |
#endif |
#endif |
394 |
#if defined(RDPSND_LIBAO) |
#if defined(RDPSND_LIBAO) |
395 |
*reg = libao_register(options); |
*reg = libao_register(options); |
396 |
|
assert(*reg); |
397 |
reg = &((*reg)->next); |
reg = &((*reg)->next); |
398 |
#endif |
#endif |
399 |
|
*reg = NULL; |
400 |
} |
} |
401 |
|
|
402 |
BOOL |
BOOL |
403 |
rdpsnd_select_driver(char *driver, char *options) |
rdpsnd_init(char *optarg) |
404 |
{ |
{ |
405 |
static struct audio_driver auto_driver; |
static struct audio_driver auto_driver; |
406 |
struct audio_driver *pos; |
struct audio_driver *pos; |
407 |
|
char *driver = NULL, *options = NULL; |
408 |
|
|
409 |
drivers = NULL; |
drivers = NULL; |
410 |
|
|
411 |
|
packet.data = xmalloc(65536); |
412 |
|
packet.p = packet.end = packet.data; |
413 |
|
packet.size = 0; |
414 |
|
|
415 |
|
rdpsnd_channel = |
416 |
|
channel_register("rdpsnd", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP, |
417 |
|
rdpsnd_process); |
418 |
|
|
419 |
|
if (rdpsnd_channel == NULL) |
420 |
|
{ |
421 |
|
error("channel_register\n"); |
422 |
|
return False; |
423 |
|
} |
424 |
|
|
425 |
|
rdpsnd_queue_init(); |
426 |
|
|
427 |
|
if (optarg != NULL && strlen(optarg) > 0) |
428 |
|
{ |
429 |
|
driver = options = optarg; |
430 |
|
|
431 |
|
while (*options != '\0' && *options != ':') |
432 |
|
options++; |
433 |
|
|
434 |
|
if (*options == ':') |
435 |
|
{ |
436 |
|
*options = '\0'; |
437 |
|
options++; |
438 |
|
} |
439 |
|
|
440 |
|
if (*options == '\0') |
441 |
|
options = NULL; |
442 |
|
} |
443 |
|
|
444 |
rdpsnd_register_drivers(options); |
rdpsnd_register_drivers(options); |
445 |
|
|
446 |
if (!driver) |
if (!driver) |
479 |
} |
} |
480 |
} |
} |
481 |
|
|
482 |
inline void |
void |
483 |
rdpsnd_play(void) |
rdpsnd_play(void) |
484 |
{ |
{ |
485 |
current_driver->wave_out_play(); |
current_driver->wave_out_play(); |
486 |
} |
} |
487 |
|
|
488 |
void |
void |
489 |
|
rdpsnd_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
490 |
|
{ |
491 |
|
long next_pending; |
492 |
|
|
493 |
|
if (g_dsp_busy) |
494 |
|
{ |
495 |
|
FD_SET(g_dsp_fd, wfds); |
496 |
|
*n = (g_dsp_fd > *n) ? g_dsp_fd : *n; |
497 |
|
} |
498 |
|
|
499 |
|
next_pending = rdpsnd_queue_next_completion(); |
500 |
|
if (next_pending >= 0) |
501 |
|
{ |
502 |
|
long cur_timeout; |
503 |
|
|
504 |
|
cur_timeout = tv->tv_sec * 1000000 + tv->tv_usec; |
505 |
|
if (cur_timeout > next_pending) |
506 |
|
{ |
507 |
|
tv->tv_sec = next_pending / 1000000; |
508 |
|
tv->tv_usec = next_pending % 1000000; |
509 |
|
} |
510 |
|
} |
511 |
|
} |
512 |
|
|
513 |
|
void |
514 |
|
rdpsnd_check_fds(fd_set * rfds, fd_set * wfds) |
515 |
|
{ |
516 |
|
rdpsnd_queue_complete_pending(); |
517 |
|
|
518 |
|
if (g_dsp_busy && FD_ISSET(g_dsp_fd, wfds)) |
519 |
|
rdpsnd_play(); |
520 |
|
} |
521 |
|
|
522 |
|
static void |
523 |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
rdpsnd_queue_write(STREAM s, uint16 tick, uint8 index) |
524 |
{ |
{ |
525 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
struct audio_packet *packet = &packet_queue[queue_hi]; |
526 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
527 |
|
|
528 |
if (next_hi == queue_lo) |
if (next_hi == queue_pending) |
529 |
{ |
{ |
530 |
error("No space to queue audio packet\n"); |
error("No space to queue audio packet\n"); |
531 |
return; |
return; |
537 |
packet->tick = tick; |
packet->tick = tick; |
538 |
packet->index = index; |
packet->index = index; |
539 |
|
|
540 |
|
gettimeofday(&packet->arrive_tv, NULL); |
541 |
|
|
542 |
if (!g_dsp_busy) |
if (!g_dsp_busy) |
543 |
current_driver->wave_out_play(); |
current_driver->wave_out_play(); |
544 |
} |
} |
545 |
|
|
546 |
inline struct audio_packet * |
struct audio_packet * |
547 |
rdpsnd_queue_current_packet(void) |
rdpsnd_queue_current_packet(void) |
548 |
{ |
{ |
549 |
return &packet_queue[queue_lo]; |
return &packet_queue[queue_lo]; |
550 |
} |
} |
551 |
|
|
552 |
inline BOOL |
BOOL |
553 |
rdpsnd_queue_empty(void) |
rdpsnd_queue_empty(void) |
554 |
{ |
{ |
555 |
return (queue_lo == queue_hi); |
return (queue_lo == queue_hi); |
556 |
} |
} |
557 |
|
|
558 |
inline void |
static void |
559 |
rdpsnd_queue_init(void) |
rdpsnd_queue_init(void) |
560 |
{ |
{ |
561 |
queue_lo = queue_hi = 0; |
queue_pending = queue_lo = queue_hi = 0; |
562 |
} |
} |
563 |
|
|
564 |
inline void |
void |
565 |
rdpsnd_queue_next(void) |
rdpsnd_queue_next(unsigned long completed_in_us) |
566 |
{ |
{ |
567 |
xfree(packet_queue[queue_lo].s.data); |
struct audio_packet *packet; |
568 |
|
|
569 |
|
assert(!rdpsnd_queue_empty()); |
570 |
|
|
571 |
|
packet = &packet_queue[queue_lo]; |
572 |
|
|
573 |
|
gettimeofday(&packet->completion_tv, NULL); |
574 |
|
|
575 |
|
packet->completion_tv.tv_usec += completed_in_us; |
576 |
|
packet->completion_tv.tv_sec += packet->completion_tv.tv_usec / 1000000; |
577 |
|
packet->completion_tv.tv_usec %= 1000000; |
578 |
|
|
579 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
580 |
|
|
581 |
|
rdpsnd_queue_complete_pending(); |
582 |
} |
} |
583 |
|
|
584 |
inline int |
int |
585 |
rdpsnd_queue_next_tick(void) |
rdpsnd_queue_next_tick(void) |
586 |
{ |
{ |
587 |
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
if (((queue_lo + 1) % MAX_QUEUE) != queue_hi) |
593 |
return (packet_queue[queue_lo].tick + 65535) % 65536; |
return (packet_queue[queue_lo].tick + 65535) % 65536; |
594 |
} |
} |
595 |
} |
} |
596 |
|
|
597 |
|
static void |
598 |
|
rdpsnd_queue_complete_pending(void) |
599 |
|
{ |
600 |
|
struct timeval now; |
601 |
|
long elapsed; |
602 |
|
struct audio_packet *packet; |
603 |
|
|
604 |
|
gettimeofday(&now, NULL); |
605 |
|
|
606 |
|
while (queue_pending != queue_lo) |
607 |
|
{ |
608 |
|
packet = &packet_queue[queue_pending]; |
609 |
|
|
610 |
|
if (now.tv_sec < packet->completion_tv.tv_sec) |
611 |
|
break; |
612 |
|
|
613 |
|
if ((now.tv_sec == packet->completion_tv.tv_sec) && |
614 |
|
(now.tv_usec < packet->completion_tv.tv_usec)) |
615 |
|
break; |
616 |
|
|
617 |
|
elapsed = (packet->completion_tv.tv_sec - packet->arrive_tv.tv_sec) * 1000000 + |
618 |
|
(packet->completion_tv.tv_usec - packet->arrive_tv.tv_usec); |
619 |
|
elapsed /= 1000; |
620 |
|
|
621 |
|
xfree(packet->s.data); |
622 |
|
rdpsnd_send_completion((packet->tick + elapsed) % 65536, packet->index); |
623 |
|
queue_pending = (queue_pending + 1) % MAX_QUEUE; |
624 |
|
} |
625 |
|
} |
626 |
|
|
627 |
|
static long |
628 |
|
rdpsnd_queue_next_completion(void) |
629 |
|
{ |
630 |
|
struct audio_packet *packet; |
631 |
|
long remaining; |
632 |
|
struct timeval now; |
633 |
|
|
634 |
|
if (queue_pending == queue_lo) |
635 |
|
return -1; |
636 |
|
|
637 |
|
gettimeofday(&now, NULL); |
638 |
|
|
639 |
|
packet = &packet_queue[queue_pending]; |
640 |
|
|
641 |
|
remaining = (packet->completion_tv.tv_sec - now.tv_sec) * 1000000 + |
642 |
|
(packet->completion_tv.tv_usec - now.tv_usec); |
643 |
|
|
644 |
|
if (remaining < 0) |
645 |
|
return 0; |
646 |
|
|
647 |
|
return remaining; |
648 |
|
} |