1 |
/* |
---|
2 |
* Copyright (C) 2005-2008 by Pieter Palmers |
---|
3 |
* |
---|
4 |
* This file is part of FFADO |
---|
5 |
* FFADO = Free Firewire (pro-)audio drivers for linux |
---|
6 |
* |
---|
7 |
* FFADO is based upon FreeBoB. |
---|
8 |
* |
---|
9 |
* This program is free software: you can redistribute it and/or modify |
---|
10 |
* it under the terms of the GNU General Public License as published by |
---|
11 |
* the Free Software Foundation, either version 2 of the License, or |
---|
12 |
* (at your option) version 3 of the License. |
---|
13 |
* |
---|
14 |
* This program is distributed in the hope that it will be useful, |
---|
15 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
17 |
* GNU General Public License for more details. |
---|
18 |
* |
---|
19 |
* You should have received a copy of the GNU General Public License |
---|
20 |
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
---|
21 |
* |
---|
22 |
*/ |
---|
23 |
|
---|
24 |
#include "config.h" |
---|
25 |
#include "IsoHandlerManager.h" |
---|
26 |
#include "ieee1394service.h" |
---|
27 |
#include "IsoHandler.h" |
---|
28 |
#include "libstreaming/generic/StreamProcessor.h" |
---|
29 |
|
---|
30 |
#include "libutil/Atomic.h" |
---|
31 |
|
---|
32 |
#include "libutil/PosixThread.h" |
---|
33 |
|
---|
34 |
#include "libutil/SystemTimeSource.h" |
---|
35 |
|
---|
36 |
#include <assert.h> |
---|
37 |
|
---|
38 |
IMPL_DEBUG_MODULE( IsoHandlerManager, IsoHandlerManager, DEBUG_LEVEL_NORMAL ); |
---|
39 |
IMPL_DEBUG_MODULE( IsoTask, IsoTask, DEBUG_LEVEL_NORMAL ); |
---|
40 |
|
---|
41 |
using namespace Streaming; |
---|
42 |
|
---|
43 |
// --- ISO Thread --- // |
---|
44 |
|
---|
45 |
IsoTask::IsoTask(IsoHandlerManager& manager, enum IsoTask::eTaskType t) |
---|
46 |
: m_manager( manager ) |
---|
47 |
, m_type( t ) |
---|
48 |
{ |
---|
49 |
} |
---|
50 |
|
---|
51 |
bool |
---|
52 |
IsoTask::Init() |
---|
53 |
{ |
---|
54 |
request_update = 0; |
---|
55 |
|
---|
56 |
int i; |
---|
57 |
for (i=0; i < ISOHANDLERMANAGER_MAX_ISO_HANDLERS_PER_PORT; i++) { |
---|
58 |
m_IsoHandler_map_shadow[i] = NULL; |
---|
59 |
m_poll_fds_shadow[i].events = 0; |
---|
60 |
} |
---|
61 |
m_poll_nfds_shadow = 0; |
---|
62 |
return true; |
---|
63 |
} |
---|
64 |
|
---|
65 |
bool |
---|
66 |
IsoTask::requestShadowMapUpdate() |
---|
67 |
{ |
---|
68 |
debugOutput(DEBUG_LEVEL_VERBOSE, "enter\n"); |
---|
69 |
INC_ATOMIC(&request_update); |
---|
70 |
return true; |
---|
71 |
} |
---|
72 |
|
---|
73 |
// updates the internal stream map |
---|
74 |
// note that this should be executed with the guarantee that |
---|
75 |
// nobody will modify |
---|
76 |
void |
---|
77 |
IsoTask::updateShadowMapHelper() |
---|
78 |
{ |
---|
79 |
debugOutput( DEBUG_LEVEL_VERBOSE, "updating shadow vars...\n"); |
---|
80 |
unsigned int i, cnt, max; |
---|
81 |
max = m_manager.m_IsoHandlers.size(); |
---|
82 |
for (i = 0, cnt = 0; i < max; i++) { |
---|
83 |
IsoHandler *h = m_manager.m_IsoHandlers.at(i); |
---|
84 |
assert(h); |
---|
85 |
|
---|
86 |
// skip handlers of the wrong type |
---|
87 |
if (h->getType() == IsoHandler::eHT_Receive && m_type == eTT_Transmit) continue; |
---|
88 |
if (h->getType() == IsoHandler::eHT_Transmit && m_type == eTT_Receive) continue; |
---|
89 |
|
---|
90 |
if (h->isEnabled()) { |
---|
91 |
m_IsoHandler_map_shadow[cnt] = h; |
---|
92 |
m_poll_fds_shadow[cnt].fd = h->getFileDescriptor(); |
---|
93 |
m_poll_fds_shadow[cnt].revents = 0; |
---|
94 |
m_poll_fds_shadow[cnt].events = POLLIN; |
---|
95 |
cnt++; |
---|
96 |
debugOutput( DEBUG_LEVEL_VERBOSE, "%s handler %p added\n", h->getTypeString(), h); |
---|
97 |
} else { |
---|
98 |
debugOutput( DEBUG_LEVEL_VERBOSE, "%s handler %p skipped (disabled)\n", h->getTypeString(), h); |
---|
99 |
} |
---|
100 |
if(cnt > ISOHANDLERMANAGER_MAX_ISO_HANDLERS_PER_PORT) { |
---|
101 |
debugWarning("Too much ISO Handlers in thread...\n"); |
---|
102 |
break; |
---|
103 |
} |
---|
104 |
} |
---|
105 |
m_poll_nfds_shadow = cnt; |
---|
106 |
debugOutput( DEBUG_LEVEL_VERBOSE, " updated shadow vars...\n"); |
---|
107 |
} |
---|
108 |
|
---|
109 |
bool |
---|
110 |
IsoTask::Execute() |
---|
111 |
{ |
---|
112 |
debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, |
---|
113 |
"(%p, %s) Execute\n", |
---|
114 |
this, m_type==eTT_Transmit?"Transmit":"Receive"); |
---|
115 |
int err; |
---|
116 |
unsigned int i; |
---|
117 |
unsigned int m_poll_timeout = 10; |
---|
118 |
|
---|
119 |
// if some other thread requested a shadow map update, do it |
---|
120 |
if(request_update) { |
---|
121 |
updateShadowMapHelper(); |
---|
122 |
DEC_ATOMIC(&request_update); // ack the update |
---|
123 |
} |
---|
124 |
|
---|
125 |
// bypass if no handlers are registered |
---|
126 |
if (m_poll_nfds_shadow == 0) { |
---|
127 |
debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, |
---|
128 |
"(%p, %8s) bypass iterate since no handlers to poll\n", |
---|
129 |
this, m_type==eTT_Transmit?"Transmit":"Receive"); |
---|
130 |
usleep(m_poll_timeout * 1000); |
---|
131 |
return true; |
---|
132 |
} |
---|
133 |
|
---|
134 |
// FIXME: what can happen is that poll() returns, but not all clients are |
---|
135 |
// ready. there might be some busy waiting behavior that still has to be solved. |
---|
136 |
|
---|
137 |
// setup the poll here |
---|
138 |
// we should prevent a poll() where no events are specified, since that will only time-out |
---|
139 |
bool no_one_to_poll = true; |
---|
140 |
while(no_one_to_poll) { |
---|
141 |
if (m_type==eTT_Transmit) { |
---|
142 |
// if we are a transmit thread, we should only poll on |
---|
143 |
// those handlers that have a client that is ready to send |
---|
144 |
// something. poll'ing the others will only cause busy-wait |
---|
145 |
// looping. |
---|
146 |
for (i = 0; i < m_poll_nfds_shadow; i++) { |
---|
147 |
short events = 0; |
---|
148 |
if (m_IsoHandler_map_shadow[i]->tryWaitForClient()) { |
---|
149 |
events = POLLIN | POLLPRI; |
---|
150 |
no_one_to_poll = false; |
---|
151 |
} |
---|
152 |
m_poll_fds_shadow[i].events = events; |
---|
153 |
} |
---|
154 |
} else { |
---|
155 |
// for receive handlers, we can do the same. we might not have to though |
---|
156 |
for (i = 0; i < m_poll_nfds_shadow; i++) { |
---|
157 |
short events = 0; |
---|
158 |
if (m_IsoHandler_map_shadow[i]->tryWaitForClient()) { |
---|
159 |
events = POLLIN | POLLERR | POLLHUP; |
---|
160 |
no_one_to_poll = false; |
---|
161 |
} |
---|
162 |
m_poll_fds_shadow[i].events = events; |
---|
163 |
} |
---|
164 |
} |
---|
165 |
if(no_one_to_poll) { |
---|
166 |
debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, |
---|
167 |
"(%p, %8s) No one to poll, waiting on the first handler to become ready\n", |
---|
168 |
this, m_type==eTT_Transmit?"Transmit":"Receive"); |
---|
169 |
|
---|
170 |
m_IsoHandler_map_shadow[0]->waitForClient(); |
---|
171 |
|
---|
172 |
debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, |
---|
173 |
"(%p, %8s) handler ready\n", |
---|
174 |
this, m_type==eTT_Transmit?"Transmit":"Receive"); |
---|
175 |
} |
---|
176 |
} |
---|
177 |
|
---|
178 |
// Use a shadow map of the fd's such that the poll call is not in a critical section |
---|
179 |
err = poll (m_poll_fds_shadow, m_poll_nfds_shadow, m_poll_timeout); |
---|
180 |
|
---|
181 |
if (err < 0) { |
---|
182 |
if (errno == EINTR) { |
---|
183 |
return true; |
---|
184 |
} |
---|
185 |
debugFatal("poll error: %s\n", strerror (errno)); |
---|
186 |
return false; |
---|
187 |
} |
---|
188 |
|
---|
189 |
for (i = 0; i < m_poll_nfds_shadow; i++) { |
---|
190 |
#ifdef DEBUG |
---|
191 |
if(m_poll_fds_shadow[i].revents) { |
---|
192 |
debugOutput(DEBUG_LEVEL_VERY_VERBOSE, |
---|
193 |
"received events: %08X for (%d/%d, %p, %s)\n", |
---|
194 |
m_poll_fds_shadow[i].revents, |
---|
195 |
i, m_poll_nfds_shadow, |
---|
196 |
m_IsoHandler_map_shadow[i], |
---|
197 |
m_IsoHandler_map_shadow[i]->getTypeString()); |
---|
198 |
} |
---|
199 |
#endif |
---|
200 |
|
---|
201 |
// if we get here, it means two things: |
---|
202 |
// 1) the kernel can accept or provide packets (poll returned POLLIN) |
---|
203 |
// 2) the client can provide or accept packets (we enabled polling) |
---|
204 |
if(m_poll_fds_shadow[i].revents & (POLLIN)) { |
---|
205 |
m_IsoHandler_map_shadow[i]->iterate(); |
---|
206 |
} else { |
---|
207 |
// there might be some error condition |
---|
208 |
if (m_poll_fds_shadow[i].revents & POLLERR) { |
---|
209 |
debugWarning("error on fd for %d\n",i); |
---|
210 |
} |
---|
211 |
if (m_poll_fds_shadow[i].revents & POLLHUP) { |
---|
212 |
debugWarning("hangup on fd for %d\n",i); |
---|
213 |
} |
---|
214 |
} |
---|
215 |
|
---|
216 |
// #ifdef DEBUG |
---|
217 |
// // check if the handler is still alive |
---|
218 |
// if(m_IsoHandler_map_shadow[i]->isDead()) { |
---|
219 |
// debugError("Iso handler (%p, %s) is dead!\n", |
---|
220 |
// m_IsoHandler_map_shadow[i], |
---|
221 |
// m_IsoHandler_map_shadow[i]->getTypeString()); |
---|
222 |
// return false; // shutdown the system |
---|
223 |
// } |
---|
224 |
// #endif |
---|
225 |
|
---|
226 |
} |
---|
227 |
return true; |
---|
228 |
|
---|
229 |
} |
---|
230 |
|
---|
231 |
void IsoTask::setVerboseLevel(int i) { |
---|
232 |
setDebugLevel(i); |
---|
233 |
} |
---|
234 |
|
---|
235 |
// -- the ISO handler manager -- // |
---|
236 |
IsoHandlerManager::IsoHandlerManager(Ieee1394Service& service) |
---|
237 |
: m_State(E_Created) |
---|
238 |
, m_service( service ) |
---|
239 |
, m_realtime(false), m_priority(0) |
---|
240 |
, m_ReceiveThread ( NULL ) |
---|
241 |
, m_TransmitThread ( NULL ) |
---|
242 |
, m_ReceiveTask ( NULL ) |
---|
243 |
, m_TransmitTask ( NULL ) |
---|
244 |
{} |
---|
245 |
|
---|
246 |
IsoHandlerManager::IsoHandlerManager(Ieee1394Service& service, bool run_rt, int rt_prio) |
---|
247 |
: m_State(E_Created) |
---|
248 |
, m_service( service ) |
---|
249 |
, m_realtime(run_rt), m_priority(rt_prio) |
---|
250 |
, m_ReceiveThread ( NULL ) |
---|
251 |
, m_TransmitThread ( NULL ) |
---|
252 |
, m_ReceiveTask ( NULL ) |
---|
253 |
, m_TransmitTask ( NULL ) |
---|
254 |
{} |
---|
255 |
|
---|
256 |
IsoHandlerManager::~IsoHandlerManager() |
---|
257 |
{ |
---|
258 |
stopHandlers(); |
---|
259 |
pruneHandlers(); |
---|
260 |
if(m_IsoHandlers.size() > 0) { |
---|
261 |
debugError("Still some handlers in use\n"); |
---|
262 |
} |
---|
263 |
if (m_ReceiveThread) { |
---|
264 |
m_ReceiveThread->Stop(); |
---|
265 |
delete m_ReceiveThread; |
---|
266 |
} |
---|
267 |
if (m_ReceiveTask) { |
---|
268 |
delete m_ReceiveTask; |
---|
269 |
} |
---|
270 |
|
---|
271 |
if (m_TransmitThread) { |
---|
272 |
m_TransmitThread->Stop(); |
---|
273 |
delete m_TransmitThread; |
---|
274 |
} |
---|
275 |
if (m_TransmitTask) { |
---|
276 |
delete m_TransmitTask; |
---|
277 |
} |
---|
278 |
} |
---|
279 |
|
---|
280 |
bool |
---|
281 |
IsoHandlerManager::setThreadParameters(bool rt, int priority) { |
---|
282 |
debugOutput( DEBUG_LEVEL_VERBOSE, "(%p) switch to: (rt=%d, prio=%d)...\n", this, rt, priority); |
---|
283 |
if (priority > THREAD_MAX_RTPRIO) priority = THREAD_MAX_RTPRIO; // cap the priority |
---|
284 |
m_realtime = rt; |
---|
285 |
m_priority = priority; |
---|
286 |
bool result = true; |
---|
287 |
|
---|
288 |
if (m_ReceiveThread) { |
---|
289 |
if (m_realtime) { |
---|
290 |
m_ReceiveThread->AcquireRealTime(m_priority); |
---|
291 |
} else { |
---|
292 |
m_ReceiveThread->DropRealTime(); |
---|
293 |
} |
---|
294 |
} |
---|
295 |
if (m_TransmitThread) { |
---|
296 |
if (m_realtime) { |
---|
297 |
m_TransmitThread->AcquireRealTime(m_priority); |
---|
298 |
} else { |
---|
299 |
m_TransmitThread->DropRealTime(); |
---|
300 |
} |
---|
301 |
} |
---|
302 |
|
---|
303 |
return result; |
---|
304 |
} |
---|
305 |
|
---|
306 |
bool IsoHandlerManager::init() |
---|
307 |
{ |
---|
308 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Initializing ISO manager %p...\n", this); |
---|
309 |
// check state |
---|
310 |
if(m_State != E_Created) { |
---|
311 |
debugError("Manager already initialized...\n"); |
---|
312 |
return false; |
---|
313 |
} |
---|
314 |
|
---|
315 |
// create a thread to iterate our receive handlers |
---|
316 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Create receive thread for %p...\n", this); |
---|
317 |
m_ReceiveTask = new IsoTask( *this, IsoTask::eTT_Receive ); |
---|
318 |
if(!m_ReceiveTask) { |
---|
319 |
debugFatal("No task\n"); |
---|
320 |
return false; |
---|
321 |
} |
---|
322 |
m_ReceiveThread = new Util::PosixThread(m_ReceiveTask, m_realtime, |
---|
323 |
m_priority + ISOHANDLERMANAGER_RECEIVE_PRIO_INCREASE, |
---|
324 |
PTHREAD_CANCEL_DEFERRED); |
---|
325 |
|
---|
326 |
if(!m_ReceiveThread) { |
---|
327 |
debugFatal("No thread\n"); |
---|
328 |
return false; |
---|
329 |
} |
---|
330 |
if (m_ReceiveThread->Start() != 0) { |
---|
331 |
debugFatal("Could not start receive thread\n"); |
---|
332 |
return false; |
---|
333 |
} |
---|
334 |
|
---|
335 |
// create a thread to iterate our transmit handlers |
---|
336 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Create transmit thread for %p...\n", this); |
---|
337 |
m_TransmitTask = new IsoTask( *this, IsoTask::eTT_Transmit ); |
---|
338 |
if(!m_TransmitTask) { |
---|
339 |
debugFatal("No task\n"); |
---|
340 |
return false; |
---|
341 |
} |
---|
342 |
m_TransmitThread = new Util::PosixThread(m_TransmitTask, m_realtime, |
---|
343 |
m_priority + ISOHANDLERMANAGER_TRANSMIT_PRIO_INCREASE, |
---|
344 |
PTHREAD_CANCEL_DEFERRED); |
---|
345 |
if(!m_TransmitThread) { |
---|
346 |
debugFatal("No thread\n"); |
---|
347 |
return false; |
---|
348 |
} |
---|
349 |
if (m_TransmitThread->Start() != 0) { |
---|
350 |
debugFatal("Could not start transmit thread\n"); |
---|
351 |
return false; |
---|
352 |
} |
---|
353 |
|
---|
354 |
m_State=E_Running; |
---|
355 |
return true; |
---|
356 |
} |
---|
357 |
|
---|
358 |
|
---|
359 |
bool |
---|
360 |
IsoHandlerManager::updateShadowMapFor(IsoHandler *h) |
---|
361 |
{ |
---|
362 |
// update the shadow map |
---|
363 |
if(h->getType() == IsoHandler::eHT_Receive) { |
---|
364 |
if(!m_ReceiveTask->requestShadowMapUpdate()) { |
---|
365 |
debugError("failed to update shadow map\n"); |
---|
366 |
return false; |
---|
367 |
} |
---|
368 |
} else { |
---|
369 |
if(!m_TransmitTask->requestShadowMapUpdate()) { |
---|
370 |
debugError("failed to update shadow map\n"); |
---|
371 |
return false; |
---|
372 |
} |
---|
373 |
} |
---|
374 |
return true; |
---|
375 |
} |
---|
376 |
|
---|
377 |
bool |
---|
378 |
IsoHandlerManager::disable(IsoHandler *h) { |
---|
379 |
bool result; |
---|
380 |
int i=0; |
---|
381 |
debugOutput(DEBUG_LEVEL_VERBOSE, "Disable on IsoHandler %p\n", h); |
---|
382 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
383 |
it != m_IsoHandlers.end(); |
---|
384 |
++it ) |
---|
385 |
{ |
---|
386 |
if ((*it) == h) { |
---|
387 |
result = h->disable(); |
---|
388 |
result &= updateShadowMapFor(h); |
---|
389 |
debugOutput(DEBUG_LEVEL_VERY_VERBOSE, " disabled\n"); |
---|
390 |
return result; |
---|
391 |
} |
---|
392 |
i++; |
---|
393 |
} |
---|
394 |
debugError("Handler not found\n"); |
---|
395 |
return false; |
---|
396 |
} |
---|
397 |
|
---|
398 |
bool |
---|
399 |
IsoHandlerManager::enable(IsoHandler *h) { |
---|
400 |
bool result; |
---|
401 |
int i=0; |
---|
402 |
debugOutput(DEBUG_LEVEL_VERBOSE, "Enable on IsoHandler %p\n", h); |
---|
403 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
404 |
it != m_IsoHandlers.end(); |
---|
405 |
++it ) |
---|
406 |
{ |
---|
407 |
if ((*it) == h) { |
---|
408 |
result = h->enable(); |
---|
409 |
result &= updateShadowMapFor(h); |
---|
410 |
debugOutput(DEBUG_LEVEL_VERY_VERBOSE, " enabled\n"); |
---|
411 |
return result; |
---|
412 |
} |
---|
413 |
i++; |
---|
414 |
} |
---|
415 |
debugError("Handler not found\n"); |
---|
416 |
return false; |
---|
417 |
} |
---|
418 |
|
---|
419 |
bool IsoHandlerManager::registerHandler(IsoHandler *handler) |
---|
420 |
{ |
---|
421 |
debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
---|
422 |
assert(handler); |
---|
423 |
handler->setVerboseLevel(getDebugLevel()); |
---|
424 |
m_IsoHandlers.push_back(handler); |
---|
425 |
return updateShadowMapFor(handler); |
---|
426 |
} |
---|
427 |
|
---|
428 |
bool IsoHandlerManager::unregisterHandler(IsoHandler *handler) |
---|
429 |
{ |
---|
430 |
debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
---|
431 |
assert(handler); |
---|
432 |
|
---|
433 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
434 |
it != m_IsoHandlers.end(); |
---|
435 |
++it ) |
---|
436 |
{ |
---|
437 |
if ( *it == handler ) { |
---|
438 |
m_IsoHandlers.erase(it); |
---|
439 |
return updateShadowMapFor(handler); |
---|
440 |
} |
---|
441 |
} |
---|
442 |
debugFatal("Could not find handler (%p)\n", handler); |
---|
443 |
return false; //not found |
---|
444 |
} |
---|
445 |
|
---|
446 |
/** |
---|
447 |
* Registers an StreamProcessor with the IsoHandlerManager. |
---|
448 |
* |
---|
449 |
* If nescessary, an IsoHandler is created to handle this stream. |
---|
450 |
* Once an StreamProcessor is registered to the handler, it will be included |
---|
451 |
* in the ISO streaming cycle (i.e. receive/transmit of it will occur). |
---|
452 |
* |
---|
453 |
* @param stream the stream to register |
---|
454 |
* @return true if registration succeeds |
---|
455 |
* |
---|
456 |
* \todo : currently there is a one-to-one mapping |
---|
457 |
* between streams and handlers, this is not ok for |
---|
458 |
* multichannel receive |
---|
459 |
*/ |
---|
460 |
bool IsoHandlerManager::registerStream(StreamProcessor *stream) |
---|
461 |
{ |
---|
462 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Registering stream %p\n",stream); |
---|
463 |
assert(stream); |
---|
464 |
|
---|
465 |
IsoHandler* h = NULL; |
---|
466 |
|
---|
467 |
// make sure the stream isn't already attached to a handler |
---|
468 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
469 |
it != m_IsoHandlers.end(); |
---|
470 |
++it ) |
---|
471 |
{ |
---|
472 |
if((*it)->isStreamRegistered(stream)) { |
---|
473 |
debugError( "stream already registered!\n"); |
---|
474 |
return false; |
---|
475 |
} |
---|
476 |
} |
---|
477 |
|
---|
478 |
// clean up all handlers that aren't used |
---|
479 |
pruneHandlers(); |
---|
480 |
|
---|
481 |
// allocate a handler for this stream |
---|
482 |
if (stream->getType()==StreamProcessor::ePT_Receive) { |
---|
483 |
// setup the optimal parameters for the raw1394 ISO buffering |
---|
484 |
unsigned int packets_per_period = stream->getPacketsPerPeriod(); |
---|
485 |
unsigned int max_packet_size = stream->getMaxPacketSize(); |
---|
486 |
unsigned int page_size = getpagesize() - 2; // for one reason or another this is necessary |
---|
487 |
|
---|
488 |
// Ensure we don't request a packet size bigger than the |
---|
489 |
// kernel-enforced maximum which is currently 1 page. |
---|
490 |
if (max_packet_size > page_size) { |
---|
491 |
debugError("max packet size (%u) > page size (%u)\n", max_packet_size, page_size); |
---|
492 |
return false; |
---|
493 |
} |
---|
494 |
|
---|
495 |
unsigned int irq_interval = packets_per_period / MINIMUM_INTERRUPTS_PER_PERIOD; |
---|
496 |
if(irq_interval <= 0) irq_interval=1; |
---|
497 |
|
---|
498 |
// the receive buffer size doesn't matter for the latency, |
---|
499 |
// but it has a minimal value in order for libraw to operate correctly (300) |
---|
500 |
int buffers=400; |
---|
501 |
|
---|
502 |
// create the actual handler |
---|
503 |
h = new IsoHandler(*this, IsoHandler::eHT_Receive, |
---|
504 |
buffers, max_packet_size, irq_interval); |
---|
505 |
|
---|
506 |
debugOutput( DEBUG_LEVEL_VERBOSE, " creating IsoRecvHandler\n"); |
---|
507 |
|
---|
508 |
if(!h) { |
---|
509 |
debugFatal("Could not create IsoRecvHandler\n"); |
---|
510 |
return false; |
---|
511 |
} |
---|
512 |
|
---|
513 |
} else if (stream->getType()==StreamProcessor::ePT_Transmit) { |
---|
514 |
// setup the optimal parameters for the raw1394 ISO buffering |
---|
515 |
unsigned int packets_per_period = stream->getPacketsPerPeriod(); |
---|
516 |
unsigned int max_packet_size = stream->getMaxPacketSize(); |
---|
517 |
// unsigned int page_size = getpagesize(); |
---|
518 |
|
---|
519 |
// Ensure we don't request a packet size bigger than the |
---|
520 |
// kernel-enforced maximum which is currently 1 page. |
---|
521 |
// if (max_packet_size > page_size) { |
---|
522 |
// debugError("max packet size (%u) > page size (%u)\n", max_packet_size, page_size); |
---|
523 |
// return false; |
---|
524 |
// } |
---|
525 |
if (max_packet_size > MAX_XMIT_PACKET_SIZE) { |
---|
526 |
debugError("max packet size (%u) > MAX_XMIT_PACKET_SIZE (%u)\n", |
---|
527 |
max_packet_size, MAX_XMIT_PACKET_SIZE); |
---|
528 |
return false; |
---|
529 |
} |
---|
530 |
|
---|
531 |
// the SP specifies how many packets to ISO-buffer |
---|
532 |
int buffers = stream->getNbPacketsIsoXmitBuffer(); |
---|
533 |
if (buffers > MAX_XMIT_NB_BUFFERS) { |
---|
534 |
debugOutput(DEBUG_LEVEL_VERBOSE, |
---|
535 |
"nb buffers (%u) > MAX_XMIT_NB_BUFFERS (%u)\n", |
---|
536 |
buffers, MAX_XMIT_NB_BUFFERS); |
---|
537 |
buffers = MAX_XMIT_NB_BUFFERS; |
---|
538 |
} |
---|
539 |
unsigned int irq_interval = buffers / MINIMUM_INTERRUPTS_PER_PERIOD; |
---|
540 |
if(irq_interval <= 0) irq_interval=1; |
---|
541 |
|
---|
542 |
debugOutput( DEBUG_LEVEL_VERBOSE, " creating IsoXmitHandler\n"); |
---|
543 |
|
---|
544 |
// create the actual handler |
---|
545 |
h = new IsoHandler(*this, IsoHandler::eHT_Transmit, |
---|
546 |
buffers, max_packet_size, irq_interval); |
---|
547 |
|
---|
548 |
if(!h) { |
---|
549 |
debugFatal("Could not create IsoXmitHandler\n"); |
---|
550 |
return false; |
---|
551 |
} |
---|
552 |
|
---|
553 |
} else { |
---|
554 |
debugFatal("Bad stream type\n"); |
---|
555 |
return false; |
---|
556 |
} |
---|
557 |
|
---|
558 |
h->setVerboseLevel(getDebugLevel()); |
---|
559 |
|
---|
560 |
// init the handler |
---|
561 |
if(!h->init()) { |
---|
562 |
debugFatal("Could not initialize receive handler\n"); |
---|
563 |
return false; |
---|
564 |
} |
---|
565 |
|
---|
566 |
// register the stream with the handler |
---|
567 |
if(!h->registerStream(stream)) { |
---|
568 |
debugFatal("Could not register receive stream with handler\n"); |
---|
569 |
return false; |
---|
570 |
} |
---|
571 |
|
---|
572 |
// register the handler with the manager |
---|
573 |
if(!registerHandler(h)) { |
---|
574 |
debugFatal("Could not register receive handler with manager\n"); |
---|
575 |
return false; |
---|
576 |
} |
---|
577 |
debugOutput( DEBUG_LEVEL_VERBOSE, " registered stream (%p) with handler (%p)\n", stream, h); |
---|
578 |
|
---|
579 |
m_StreamProcessors.push_back(stream); |
---|
580 |
debugOutput( DEBUG_LEVEL_VERBOSE, " %d streams, %d handlers registered\n", |
---|
581 |
m_StreamProcessors.size(), m_IsoHandlers.size()); |
---|
582 |
return true; |
---|
583 |
} |
---|
584 |
|
---|
585 |
bool IsoHandlerManager::unregisterStream(StreamProcessor *stream) |
---|
586 |
{ |
---|
587 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Unregistering stream %p\n",stream); |
---|
588 |
assert(stream); |
---|
589 |
|
---|
590 |
// make sure the stream isn't attached to a handler anymore |
---|
591 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
592 |
it != m_IsoHandlers.end(); |
---|
593 |
++it ) |
---|
594 |
{ |
---|
595 |
if((*it)->isStreamRegistered(stream)) { |
---|
596 |
if(!(*it)->unregisterStream(stream)) { |
---|
597 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not unregister stream (%p) from handler (%p)...\n",stream,*it); |
---|
598 |
return false; |
---|
599 |
} |
---|
600 |
debugOutput( DEBUG_LEVEL_VERBOSE, " unregistered stream (%p) from handler (%p)...\n",stream,*it); |
---|
601 |
} |
---|
602 |
} |
---|
603 |
|
---|
604 |
// clean up all handlers that aren't used |
---|
605 |
pruneHandlers(); |
---|
606 |
|
---|
607 |
// remove the stream from the registered streams list |
---|
608 |
for ( StreamProcessorVectorIterator it = m_StreamProcessors.begin(); |
---|
609 |
it != m_StreamProcessors.end(); |
---|
610 |
++it ) |
---|
611 |
{ |
---|
612 |
if ( *it == stream ) { |
---|
613 |
m_StreamProcessors.erase(it); |
---|
614 |
debugOutput( DEBUG_LEVEL_VERBOSE, " deleted stream (%p) from list...\n", *it); |
---|
615 |
return true; |
---|
616 |
} |
---|
617 |
} |
---|
618 |
return false; //not found |
---|
619 |
} |
---|
620 |
|
---|
621 |
/** |
---|
622 |
* @brief unregister a handler from the manager |
---|
623 |
* @note called without the lock held. |
---|
624 |
*/ |
---|
625 |
void IsoHandlerManager::pruneHandlers() { |
---|
626 |
debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
---|
627 |
IsoHandlerVector toUnregister; |
---|
628 |
|
---|
629 |
// find all handlers that are not in use |
---|
630 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
631 |
it != m_IsoHandlers.end(); |
---|
632 |
++it ) |
---|
633 |
{ |
---|
634 |
if(!((*it)->inUse())) { |
---|
635 |
debugOutput( DEBUG_LEVEL_VERBOSE, " handler (%p) not in use\n",*it); |
---|
636 |
toUnregister.push_back(*it); |
---|
637 |
} |
---|
638 |
} |
---|
639 |
// delete them |
---|
640 |
for ( IsoHandlerVectorIterator it = toUnregister.begin(); |
---|
641 |
it != toUnregister.end(); |
---|
642 |
++it ) |
---|
643 |
{ |
---|
644 |
unregisterHandler(*it); |
---|
645 |
|
---|
646 |
debugOutput( DEBUG_LEVEL_VERBOSE, " deleting handler (%p)\n",*it); |
---|
647 |
|
---|
648 |
// Now the handler's been unregistered it won't be reused |
---|
649 |
// again. Therefore it really needs to be formally deleted |
---|
650 |
// to free up the raw1394 handle. Otherwise things fall |
---|
651 |
// apart after several xrun recoveries as the system runs |
---|
652 |
// out of resources to support all the disused but still |
---|
653 |
// allocated raw1394 handles. At least this is the current |
---|
654 |
// theory as to why we end up with "memory allocation" |
---|
655 |
// failures after several Xrun recoveries. |
---|
656 |
delete *it; |
---|
657 |
} |
---|
658 |
} |
---|
659 |
|
---|
660 |
bool |
---|
661 |
IsoHandlerManager::stopHandlerForStream(Streaming::StreamProcessor *stream) { |
---|
662 |
// check state |
---|
663 |
if(m_State != E_Running) { |
---|
664 |
debugError("Incorrect state, expected E_Running, got %s\n", eHSToString(m_State)); |
---|
665 |
return false; |
---|
666 |
} |
---|
667 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
668 |
it != m_IsoHandlers.end(); |
---|
669 |
++it ) |
---|
670 |
{ |
---|
671 |
if((*it)->isStreamRegistered(stream)) { |
---|
672 |
debugOutput( DEBUG_LEVEL_VERBOSE, " stopping handler %p for stream %p\n", *it, stream); |
---|
673 |
if(!(*it)->disable()) { |
---|
674 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not disable handler (%p)\n",*it); |
---|
675 |
return false; |
---|
676 |
} |
---|
677 |
if(!updateShadowMapFor(*it)) { |
---|
678 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not update shadow map for handler (%p)\n",*it); |
---|
679 |
return false; |
---|
680 |
} |
---|
681 |
return true; |
---|
682 |
} |
---|
683 |
} |
---|
684 |
debugError("Stream %p has no attached handler\n", stream); |
---|
685 |
return false; |
---|
686 |
} |
---|
687 |
|
---|
688 |
int |
---|
689 |
IsoHandlerManager::getPacketLatencyForStream(Streaming::StreamProcessor *stream) { |
---|
690 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
691 |
it != m_IsoHandlers.end(); |
---|
692 |
++it ) |
---|
693 |
{ |
---|
694 |
if((*it)->isStreamRegistered(stream)) { |
---|
695 |
return (*it)->getPacketLatency(); |
---|
696 |
} |
---|
697 |
} |
---|
698 |
debugError("Stream %p has no attached handler\n", stream); |
---|
699 |
return 0; |
---|
700 |
} |
---|
701 |
|
---|
702 |
void |
---|
703 |
IsoHandlerManager::flushHandlerForStream(Streaming::StreamProcessor *stream) { |
---|
704 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
705 |
it != m_IsoHandlers.end(); |
---|
706 |
++it ) |
---|
707 |
{ |
---|
708 |
if((*it)->isStreamRegistered(stream)) { |
---|
709 |
return (*it)->flush(); |
---|
710 |
} |
---|
711 |
} |
---|
712 |
debugError("Stream %p has no attached handler\n", stream); |
---|
713 |
return; |
---|
714 |
} |
---|
715 |
|
---|
716 |
bool |
---|
717 |
IsoHandlerManager::startHandlerForStream(Streaming::StreamProcessor *stream) { |
---|
718 |
return startHandlerForStream(stream, -1); |
---|
719 |
} |
---|
720 |
|
---|
721 |
bool |
---|
722 |
IsoHandlerManager::startHandlerForStream(Streaming::StreamProcessor *stream, int cycle) { |
---|
723 |
// check state |
---|
724 |
if(m_State != E_Running) { |
---|
725 |
debugError("Incorrect state, expected E_Running, got %s\n", eHSToString(m_State)); |
---|
726 |
return false; |
---|
727 |
} |
---|
728 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
729 |
it != m_IsoHandlers.end(); |
---|
730 |
++it ) |
---|
731 |
{ |
---|
732 |
if((*it)->isStreamRegistered(stream)) { |
---|
733 |
debugOutput( DEBUG_LEVEL_VERBOSE, " starting handler %p for stream %p\n", *it, stream); |
---|
734 |
if(!(*it)->enable(cycle)) { |
---|
735 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not enable handler (%p)\n",*it); |
---|
736 |
return false; |
---|
737 |
} |
---|
738 |
if(!updateShadowMapFor(*it)) { |
---|
739 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not update shadow map for handler (%p)\n",*it); |
---|
740 |
return false; |
---|
741 |
} |
---|
742 |
return true; |
---|
743 |
} |
---|
744 |
} |
---|
745 |
debugError("Stream %p has no attached handler\n", stream); |
---|
746 |
return false; |
---|
747 |
} |
---|
748 |
|
---|
749 |
bool IsoHandlerManager::stopHandlers() { |
---|
750 |
debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
---|
751 |
|
---|
752 |
// check state |
---|
753 |
if(m_State != E_Running) { |
---|
754 |
debugError("Incorrect state, expected E_Running, got %s\n", eHSToString(m_State)); |
---|
755 |
return false; |
---|
756 |
} |
---|
757 |
|
---|
758 |
bool retval=true; |
---|
759 |
|
---|
760 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
761 |
it != m_IsoHandlers.end(); |
---|
762 |
++it ) |
---|
763 |
{ |
---|
764 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Stopping handler (%p)\n",*it); |
---|
765 |
if(!(*it)->disable()){ |
---|
766 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not stop handler (%p)\n",*it); |
---|
767 |
retval=false; |
---|
768 |
} |
---|
769 |
if(!updateShadowMapFor(*it)) { |
---|
770 |
debugOutput( DEBUG_LEVEL_VERBOSE, " could not update shadow map for handler (%p)\n",*it); |
---|
771 |
retval=false; |
---|
772 |
} |
---|
773 |
} |
---|
774 |
|
---|
775 |
if (retval) { |
---|
776 |
m_State=E_Prepared; |
---|
777 |
} else { |
---|
778 |
m_State=E_Error; |
---|
779 |
} |
---|
780 |
return retval; |
---|
781 |
} |
---|
782 |
|
---|
783 |
bool IsoHandlerManager::reset() { |
---|
784 |
debugOutput( DEBUG_LEVEL_VERBOSE, "enter...\n"); |
---|
785 |
// check state |
---|
786 |
if(m_State == E_Error) { |
---|
787 |
debugFatal("Resetting from error condition not yet supported...\n"); |
---|
788 |
return false; |
---|
789 |
} |
---|
790 |
// if not in an error condition, reset means stop the handlers |
---|
791 |
return stopHandlers(); |
---|
792 |
} |
---|
793 |
|
---|
794 |
void IsoHandlerManager::setVerboseLevel(int i) { |
---|
795 |
setDebugLevel(i); |
---|
796 |
// propagate the debug level |
---|
797 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
798 |
it != m_IsoHandlers.end(); |
---|
799 |
++it ) |
---|
800 |
{ |
---|
801 |
(*it)->setVerboseLevel(i); |
---|
802 |
} |
---|
803 |
if(m_ReceiveThread) m_ReceiveThread->setVerboseLevel(i); |
---|
804 |
if(m_ReceiveTask) m_ReceiveTask->setVerboseLevel(i); |
---|
805 |
if(m_TransmitThread) m_TransmitThread->setVerboseLevel(i); |
---|
806 |
if(m_TransmitTask) m_TransmitTask->setVerboseLevel(i); |
---|
807 |
} |
---|
808 |
|
---|
809 |
void IsoHandlerManager::dumpInfo() { |
---|
810 |
int i=0; |
---|
811 |
debugOutputShort( DEBUG_LEVEL_NORMAL, "Dumping IsoHandlerManager Stream handler information...\n"); |
---|
812 |
debugOutputShort( DEBUG_LEVEL_NORMAL, " State: %d\n",(int)m_State); |
---|
813 |
|
---|
814 |
for ( IsoHandlerVectorIterator it = m_IsoHandlers.begin(); |
---|
815 |
it != m_IsoHandlers.end(); |
---|
816 |
++it ) |
---|
817 |
{ |
---|
818 |
debugOutputShort( DEBUG_LEVEL_NORMAL, " IsoHandler %d (%p)\n",i++,*it); |
---|
819 |
(*it)->dumpInfo(); |
---|
820 |
} |
---|
821 |
} |
---|
822 |
|
---|
823 |
const char * |
---|
824 |
IsoHandlerManager::eHSToString(enum eHandlerStates s) { |
---|
825 |
switch (s) { |
---|
826 |
default: return "Invalid"; |
---|
827 |
case E_Created: return "Created"; |
---|
828 |
case E_Prepared: return "Prepared"; |
---|
829 |
case E_Running: return "Running"; |
---|
830 |
case E_Error: return "Error"; |
---|
831 |
} |
---|
832 |
} |
---|