root/trunk/libffado/src/ffado.cpp

Revision 967, 13.8 kB (checked in by ppalmers, 15 years ago)

- first attempt at not causing total havoc when devices are removed from the bus.

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1 /*
2  * Copyright (C) 2005-2008 by Daniel Wagner
3  * Copyright (C) 2005-2008 by Pieter Palmers
4  *
5  * This file is part of FFADO
6  * FFADO = Free Firewire (pro-)audio drivers for linux
7  *
8  * FFADO is based upon FreeBoB
9  *
10  * This program is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 2 of the License, or
13  * (at your option) version 3 of the License.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
22  *
23  */
24
25 /*
26  * Implementation of the FFADO external C API
27  */
28
29 #include "config.h"
30
31 #include "../libffado/ffado.h"
32 #include "libstreaming/generic/StreamProcessor.h"
33 #include "libstreaming/generic/Port.h"
34
35 #include "debugmodule/debugmodule.h"
36 #include "fbtypes.h"
37 #include "devicemanager.h"
38 #include "ffadodevice.h"
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <assert.h>
44 #include <string>
45
46 DECLARE_GLOBAL_DEBUG_MODULE;
47 IMPL_GLOBAL_DEBUG_MODULE( FFADO, DEBUG_LEVEL_VERBOSE );
48
49 #ifdef __cplusplus
50 extern "C" {
51 #endif
52
53 // this is very much nescessary, as otherwise the
54 // message buffer thread doesn't get killed when the
55 // library is dlclose()'d
56
57 static void exitfunc(void) __attribute__((destructor));
58
59 static void exitfunc(void)
60 {
61     delete DebugModuleManager::instance();
62
63 }
64 #ifdef __cplusplus
65 }
66 #endif
67
68 const char*
69 ffado_get_version() {
70     return PACKAGE_STRING;
71 }
72
73 int
74 ffado_get_api_version() {
75     return FFADO_API_VERSION;
76 }
77
78 #warning this should be cleaned up
79 #include "libavc/general/avc_generic.h"
80 void ffado_sleep_after_avc_command( int time )
81 {
82     AVC::AVCCommand::setSleepAfterAVCCommand( time );
83 }
84
85 struct _ffado_device
86 {
87     DeviceManager * m_deviceManager;
88
89     ffado_options_t options;
90     ffado_device_info_t device_info;
91 };
92
93 ffado_device_t *ffado_streaming_init (ffado_device_info_t device_info, ffado_options_t options) {
94     unsigned int i=0;
95     setDebugLevel(options.verbose);
96
97     struct _ffado_device *dev = new struct _ffado_device;
98
99     debugWarning("%s built %s %s\n", ffado_get_version(), __DATE__, __TIME__);
100
101     if(!dev) {
102         debugFatal( "Could not allocate streaming device\n" );
103         return 0;
104     }
105
106     memcpy((void *)&dev->options, (void *)&options, sizeof(dev->options));
107
108     dev->m_deviceManager = new DeviceManager();
109     if ( !dev->m_deviceManager ) {
110         debugFatal( "Could not allocate device manager\n" );
111         delete dev;
112         return 0;
113     }
114
115     dev->m_deviceManager->setVerboseLevel(dev->options.verbose);
116     dev->m_deviceManager->setThreadParameters(dev->options.realtime, dev->options.packetizer_priority);
117
118     for (i = 0; i < device_info.nb_device_spec_strings; i++) {
119         char *s = device_info.device_spec_strings[i];
120         if ( !dev->m_deviceManager->addSpecString(s) ) {
121             debugFatal( "Could not add spec string %s to device manager\n", s );
122             delete dev->m_deviceManager;
123             delete dev;
124             return 0;
125         }
126     }
127     // create a processor manager to manage the actual stream
128     // processors
129     if ( !dev->m_deviceManager->setStreamingParams(dev->options.period_size,
130                                                    dev->options.sample_rate,
131                                                    dev->options.nb_buffers))
132     {
133         debugFatal( "Could not set streaming parameters of device manager\n" );
134         delete dev->m_deviceManager;
135         delete dev;
136         return 0;
137     }
138
139     // set slave mode option
140     bool slaveMode=(dev->options.slave_mode != 0);
141     debugOutput(DEBUG_LEVEL_VERBOSE, "setting slave mode to %d\n", slaveMode);
142     if(!dev->m_deviceManager->setOption("slaveMode", slaveMode)) {
143             debugWarning("Failed to set slave mode option\n");
144     }
145     // set snoop mode option
146     bool snoopMode=(dev->options.snoop_mode != 0);
147     debugOutput(DEBUG_LEVEL_VERBOSE, "setting snoop mode to %d\n", snoopMode);
148     if(!dev->m_deviceManager->setOption("snoopMode", snoopMode)) {
149             debugWarning("Failed to set snoop mode option\n");
150     }
151
152     if ( !dev->m_deviceManager->initialize() ) {
153         debugFatal( "Could not initialize device manager\n" );
154         delete dev->m_deviceManager;
155         delete dev;
156         return 0;
157     }
158     // discover the devices on the bus
159     if(!dev->m_deviceManager->discover()) {
160         debugFatal("Could not discover devices\n");
161         delete dev->m_deviceManager;
162         delete dev;
163         return 0;
164     }
165     // are there devices on the bus?
166     if(dev->m_deviceManager->getAvDeviceCount() == 0) {
167         debugFatal("There are no devices on the bus\n");
168         delete dev->m_deviceManager;
169         delete dev;
170         return 0;
171     }
172     // prepare here or there are no ports for jack
173     if(!dev->m_deviceManager->initStreaming()) {
174         debugFatal("Could not init the streaming system\n");
175         return 0;
176     }
177     // we are ready!
178     return dev;
179 }
180
181 int ffado_streaming_prepare(ffado_device_t *dev) {
182     debugOutput(DEBUG_LEVEL_VERBOSE, "Preparing...\n");
183     // prepare here or there are no ports for jack
184     if(!dev->m_deviceManager->prepareStreaming()) {
185         debugFatal("Could not prepare the streaming system\n");
186         return -1;
187     }
188     return 0;
189 }
190
191 void ffado_streaming_finish(ffado_device_t *dev) {
192     assert(dev);
193     if(!dev->m_deviceManager->finishStreaming()) {
194         debugError("Could not finish the streaming\n");
195     }
196     delete dev->m_deviceManager;
197     delete dev;
198     return;
199 }
200
201 int ffado_streaming_start(ffado_device_t *dev) {
202     debugOutput(DEBUG_LEVEL_VERBOSE,"------------- Start -------------\n");
203     if(!dev->m_deviceManager->startStreaming()) {
204         debugFatal("Could not start the streaming system\n");
205         return -1;
206     }
207     return 0;
208 }
209
210 int ffado_streaming_stop(ffado_device_t *dev) {
211     debugOutput(DEBUG_LEVEL_VERBOSE,"------------- Stop -------------\n");
212     if(!dev->m_deviceManager->stopStreaming()) {
213         debugFatal("Could not stop the streaming system\n");
214         return -1;
215     }
216     return 0;
217 }
218
219 int ffado_streaming_reset(ffado_device_t *dev) {
220     debugOutput(DEBUG_LEVEL_VERBOSE,"------------- Reset -------------\n");
221     if(!dev->m_deviceManager->resetStreaming()) {
222         debugFatal("Could not reset the streaming system\n");
223         return -1;
224     }
225     return 0;
226 }
227
228 ffado_wait_response
229 ffado_streaming_wait(ffado_device_t *dev) {
230     static int periods=0;
231     static int periods_print=0;
232     static int xruns=0;
233
234     periods++;
235     if(periods>periods_print) {
236         debugOutputShort(DEBUG_LEVEL_NORMAL, "\nffado_streaming_wait\n");
237         debugOutputShort(DEBUG_LEVEL_NORMAL, "============================================\n");
238         debugOutputShort(DEBUG_LEVEL_NORMAL, "Xruns: %d\n", xruns);
239         debugOutputShort(DEBUG_LEVEL_NORMAL, "============================================\n");
240         dev->m_deviceManager->showStreamingInfo();
241         debugOutputShort(DEBUG_LEVEL_NORMAL, "\n");
242         periods_print+=100;
243     }
244
245     enum DeviceManager::eWaitResult result;
246     result = dev->m_deviceManager->waitForPeriod();
247     if(result == DeviceManager::eWR_OK) {
248         return ffado_wait_ok;
249     } else if (result == DeviceManager::eWR_Xrun) {
250         debugWarning("Handled XRUN\n");
251         xruns++;
252         return ffado_wait_xrun;
253     } else if (result == DeviceManager::eWR_Shutdown) {
254         debugWarning("Streaming system requests shutdown.\n");
255         return ffado_wait_shutdown;
256     } else {
257         debugError("Error condition while waiting (Unhandled XRUN)\n");
258         xruns++;
259         return ffado_wait_error;
260     }
261 }
262
263 int ffado_streaming_transfer_capture_buffers(ffado_device_t *dev) {
264     return dev->m_deviceManager->getStreamProcessorManager().transfer(Streaming::StreamProcessor::ePT_Receive);
265 }
266
267 int ffado_streaming_transfer_playback_buffers(ffado_device_t *dev) {
268     return dev->m_deviceManager->getStreamProcessorManager().transfer(Streaming::StreamProcessor::ePT_Transmit);
269 }
270
271 int ffado_streaming_transfer_buffers(ffado_device_t *dev) {
272     return dev->m_deviceManager->getStreamProcessorManager().transfer();
273 }
274
275 int ffado_streaming_get_nb_capture_streams(ffado_device_t *dev) {
276     return dev->m_deviceManager->getStreamProcessorManager().getPortCount(Streaming::Port::E_Capture);
277 }
278
279 int ffado_streaming_get_nb_playback_streams(ffado_device_t *dev) {
280     return dev->m_deviceManager->getStreamProcessorManager().getPortCount(Streaming::Port::E_Playback);
281 }
282
283 int ffado_streaming_get_capture_stream_name(ffado_device_t *dev, int i, char* buffer, size_t buffersize) {
284     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Capture);
285     if(!p) {
286         debugWarning("Could not get capture port at index %d\n",i);
287         return -1;
288     }
289
290     std::string name=p->getName();
291     if (!strncpy(buffer, name.c_str(), buffersize)) {
292         debugWarning("Could not copy name\n");
293         return -1;
294     } else return 0;
295 }
296
297 int ffado_streaming_get_playback_stream_name(ffado_device_t *dev, int i, char* buffer, size_t buffersize) {
298     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Playback);
299     if(!p) {
300         debugWarning("Could not get playback port at index %d\n",i);
301         return -1;
302     }
303
304     std::string name=p->getName();
305     if (!strncpy(buffer, name.c_str(), buffersize)) {
306         debugWarning("Could not copy name\n");
307         return -1;
308     } else return 0;
309 }
310
311 ffado_streaming_stream_type ffado_streaming_get_capture_stream_type(ffado_device_t *dev, int i) {
312     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Capture);
313     if(!p) {
314         debugWarning("Could not get capture port at index %d\n",i);
315         return ffado_stream_type_invalid;
316     }
317     switch(p->getPortType()) {
318     case Streaming::Port::E_Audio:
319         return ffado_stream_type_audio;
320     case Streaming::Port::E_Midi:
321         return ffado_stream_type_midi;
322     case Streaming::Port::E_Control:
323         return ffado_stream_type_control;
324     default:
325         return ffado_stream_type_unknown;
326     }
327 }
328
329 ffado_streaming_stream_type ffado_streaming_get_playback_stream_type(ffado_device_t *dev, int i) {
330     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Playback);
331     if(!p) {
332         debugWarning("Could not get playback port at index %d\n",i);
333         return ffado_stream_type_invalid;
334     }
335     switch(p->getPortType()) {
336     case Streaming::Port::E_Audio:
337         return ffado_stream_type_audio;
338     case Streaming::Port::E_Midi:
339         return ffado_stream_type_midi;
340     case Streaming::Port::E_Control:
341         return ffado_stream_type_control;
342     default:
343         return ffado_stream_type_unknown;
344     }
345 }
346
347 int ffado_streaming_set_audio_datatype(ffado_device_t *dev,
348     ffado_streaming_audio_datatype t) {
349     switch(t) {
350         case ffado_audio_datatype_int24:
351             if(!dev->m_deviceManager->getStreamProcessorManager().setAudioDataType(
352                Streaming::StreamProcessorManager::eADT_Int24)) {
353                 debugError("Could not set datatype\n");
354                 return -1;
355             }
356             break;
357         case ffado_audio_datatype_float:
358             if(!dev->m_deviceManager->getStreamProcessorManager().setAudioDataType(
359                Streaming::StreamProcessorManager::eADT_Float)) {
360                 debugError("Could not set datatype\n");
361                 return -1;
362             }
363             break;
364         default:
365             debugError("Invalid audio datatype\n");
366             return -1;
367     }
368     return 0;
369 }
370
371 ffado_streaming_audio_datatype ffado_streaming_get_audio_datatype(ffado_device_t *dev) {
372     switch(dev->m_deviceManager->getStreamProcessorManager().getAudioDataType()) {
373         case Streaming::StreamProcessorManager::eADT_Int24:
374             return ffado_audio_datatype_int24;
375         case Streaming::StreamProcessorManager::eADT_Float:
376             return ffado_audio_datatype_float;
377         default:
378             debugError("Invalid audio datatype\n");
379             return ffado_audio_datatype_error;
380     }
381     #warning FIXME
382 }
383
384 int ffado_streaming_stream_onoff(ffado_device_t *dev, int i,
385     int on, enum Streaming::Port::E_Direction direction) {
386     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, direction);
387     if(!p) {
388         debugWarning("Could not get %s port at index %d\n",
389             (direction==Streaming::Port::E_Playback?"Playback":"Capture"),i);
390         return -1;
391     }
392     if(on) {
393         p->enable();
394     } else {
395         p->disable();
396     }
397     return 0;
398 }
399
400 int ffado_streaming_playback_stream_onoff(ffado_device_t *dev, int number, int on) {
401     return ffado_streaming_stream_onoff(dev, number, on, Streaming::Port::E_Playback);
402 }
403
404 int ffado_streaming_capture_stream_onoff(ffado_device_t *dev, int number, int on) {
405     return ffado_streaming_stream_onoff(dev, number, on, Streaming::Port::E_Capture);
406 }
407
408 int ffado_streaming_set_capture_stream_buffer(ffado_device_t *dev, int i, char *buff) {
409     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Capture);
410     // use an assert here performancewise,
411     // it should already have failed before, if not correct
412     assert(p);
413     p->setBufferAddress((void *)buff);
414     return 0;
415 }
416
417 int ffado_streaming_set_playback_stream_buffer(ffado_device_t *dev, int i, char *buff) {
418     Streaming::Port *p = dev->m_deviceManager->getStreamProcessorManager().getPortByIndex(i, Streaming::Port::E_Playback);
419     // use an assert here performancewise,
420     // it should already have failed before, if not correct
421     assert(p);
422     p->setBufferAddress((void *)buff);
423     return 0;
424 }
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