1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "APM::Serializer"
18 //#define LOG_NDEBUG 0
19
20 #include "Serializer.h"
21 #include <media/convert.h>
22 #include "TypeConverter.h"
23 #include <libxml/parser.h>
24 #include <libxml/xinclude.h>
25 #include <string>
26 #include <sstream>
27 #include <istream>
28
29 using std::string;
30
31 namespace android {
32
getXmlAttribute(const xmlNode * cur,const char * attribute)33 string getXmlAttribute(const xmlNode *cur, const char *attribute)
34 {
35 xmlChar *xmlValue = xmlGetProp(cur, (const xmlChar*)attribute);
36 if (xmlValue == NULL) {
37 return "";
38 }
39 string value((const char*)xmlValue);
40 xmlFree(xmlValue);
41 return value;
42 }
43
44 using utilities::convertTo;
45
46 const char *const PolicySerializer::rootName = "audioPolicyConfiguration";
47 const char *const PolicySerializer::versionAttribute = "version";
48 const uint32_t PolicySerializer::gMajor = 1;
49 const uint32_t PolicySerializer::gMinor = 0;
50 static const char *const gReferenceElementName = "reference";
51 static const char *const gReferenceAttributeName = "name";
52
53 template <class Trait>
getReference(const _xmlNode * root,const _xmlNode * & refNode,const string & refName)54 static void getReference(const _xmlNode *root, const _xmlNode *&refNode, const string &refName)
55 {
56 const _xmlNode *col = root;
57 while (col != NULL) {
58 if (!xmlStrcmp(col->name, (const xmlChar *)Trait::collectionTag)) {
59 const xmlNode *cur = col->children;
60 while (cur != NULL) {
61 if ((!xmlStrcmp(cur->name, (const xmlChar *)gReferenceElementName))) {
62 string name = getXmlAttribute(cur, gReferenceAttributeName);
63 if (refName == name) {
64 refNode = cur;
65 return;
66 }
67 }
68 cur = cur->next;
69 }
70 }
71 col = col->next;
72 }
73 return;
74 }
75
76 template <class Trait>
deserializeCollection(_xmlDoc * doc,const _xmlNode * cur,typename Trait::Collection & collection,typename Trait::PtrSerializingCtx serializingContext)77 static status_t deserializeCollection(_xmlDoc *doc, const _xmlNode *cur,
78 typename Trait::Collection &collection,
79 typename Trait::PtrSerializingCtx serializingContext)
80 {
81 const xmlNode *root = cur->xmlChildrenNode;
82 while (root != NULL) {
83 if (xmlStrcmp(root->name, (const xmlChar *)Trait::collectionTag) &&
84 xmlStrcmp(root->name, (const xmlChar *)Trait::tag)) {
85 root = root->next;
86 continue;
87 }
88 const xmlNode *child = root;
89 if (!xmlStrcmp(child->name, (const xmlChar *)Trait::collectionTag)) {
90 child = child->xmlChildrenNode;
91 }
92 while (child != NULL) {
93 if (!xmlStrcmp(child->name, (const xmlChar *)Trait::tag)) {
94 typename Trait::PtrElement element;
95 status_t status = Trait::deserialize(doc, child, element, serializingContext);
96 if (status != NO_ERROR) {
97 return status;
98 }
99 if (collection.add(element) < 0) {
100 ALOGE("%s: could not add element to %s collection", __FUNCTION__,
101 Trait::collectionTag);
102 }
103 }
104 child = child->next;
105 }
106 if (!xmlStrcmp(root->name, (const xmlChar *)Trait::tag)) {
107 return NO_ERROR;
108 }
109 root = root->next;
110 }
111 return NO_ERROR;
112 }
113
114 const char *const AudioGainTraits::tag = "gain";
115 const char *const AudioGainTraits::collectionTag = "gains";
116
117 const char AudioGainTraits::Attributes::mode[] = "mode";
118 const char AudioGainTraits::Attributes::channelMask[] = "channel_mask";
119 const char AudioGainTraits::Attributes::minValueMB[] = "minValueMB";
120 const char AudioGainTraits::Attributes::maxValueMB[] = "maxValueMB";
121 const char AudioGainTraits::Attributes::defaultValueMB[] = "defaultValueMB";
122 const char AudioGainTraits::Attributes::stepValueMB[] = "stepValueMB";
123 const char AudioGainTraits::Attributes::minRampMs[] = "minRampMs";
124 const char AudioGainTraits::Attributes::maxRampMs[] = "maxRampMs";
125
deserialize(_xmlDoc *,const _xmlNode * root,PtrElement & gain,PtrSerializingCtx)126 status_t AudioGainTraits::deserialize(_xmlDoc */*doc*/, const _xmlNode *root, PtrElement &gain,
127 PtrSerializingCtx /*serializingContext*/)
128 {
129 static uint32_t index = 0;
130 gain = new Element(index++, true);
131
132 string mode = getXmlAttribute(root, Attributes::mode);
133 if (!mode.empty()) {
134 gain->setMode(GainModeConverter::maskFromString(mode));
135 }
136
137 string channelsLiteral = getXmlAttribute(root, Attributes::channelMask);
138 if (!channelsLiteral.empty()) {
139 gain->setChannelMask(channelMaskFromString(channelsLiteral));
140 }
141
142 string minValueMBLiteral = getXmlAttribute(root, Attributes::minValueMB);
143 int32_t minValueMB;
144 if (!minValueMBLiteral.empty() && convertTo(minValueMBLiteral, minValueMB)) {
145 gain->setMinValueInMb(minValueMB);
146 }
147
148 string maxValueMBLiteral = getXmlAttribute(root, Attributes::maxValueMB);
149 int32_t maxValueMB;
150 if (!maxValueMBLiteral.empty() && convertTo(maxValueMBLiteral, maxValueMB)) {
151 gain->setMaxValueInMb(maxValueMB);
152 }
153
154 string defaultValueMBLiteral = getXmlAttribute(root, Attributes::defaultValueMB);
155 int32_t defaultValueMB;
156 if (!defaultValueMBLiteral.empty() && convertTo(defaultValueMBLiteral, defaultValueMB)) {
157 gain->setDefaultValueInMb(defaultValueMB);
158 }
159
160 string stepValueMBLiteral = getXmlAttribute(root, Attributes::stepValueMB);
161 uint32_t stepValueMB;
162 if (!stepValueMBLiteral.empty() && convertTo(stepValueMBLiteral, stepValueMB)) {
163 gain->setStepValueInMb(stepValueMB);
164 }
165
166 string minRampMsLiteral = getXmlAttribute(root, Attributes::minRampMs);
167 uint32_t minRampMs;
168 if (!minRampMsLiteral.empty() && convertTo(minRampMsLiteral, minRampMs)) {
169 gain->setMinRampInMs(minRampMs);
170 }
171
172 string maxRampMsLiteral = getXmlAttribute(root, Attributes::maxRampMs);
173 uint32_t maxRampMs;
174 if (!maxRampMsLiteral.empty() && convertTo(maxRampMsLiteral, maxRampMs)) {
175 gain->setMaxRampInMs(maxRampMs);
176 }
177 ALOGV("%s: adding new gain mode %08x channel mask %08x min mB %d max mB %d", __FUNCTION__,
178 gain->getMode(), gain->getChannelMask(), gain->getMinValueInMb(),
179 gain->getMaxValueInMb());
180
181 if (gain->getMode() == 0) {
182 return BAD_VALUE;
183 }
184 return NO_ERROR;
185 }
186
187 const char *const AudioProfileTraits::collectionTag = "profiles";
188 const char *const AudioProfileTraits::tag = "profile";
189
190 const char AudioProfileTraits::Attributes::name[] = "name";
191 const char AudioProfileTraits::Attributes::samplingRates[] = "samplingRates";
192 const char AudioProfileTraits::Attributes::format[] = "format";
193 const char AudioProfileTraits::Attributes::channelMasks[] = "channelMasks";
194
deserialize(_xmlDoc *,const _xmlNode * root,PtrElement & profile,PtrSerializingCtx)195 status_t AudioProfileTraits::deserialize(_xmlDoc */*doc*/, const _xmlNode *root, PtrElement &profile,
196 PtrSerializingCtx /*serializingContext*/)
197 {
198 string samplingRates = getXmlAttribute(root, Attributes::samplingRates);
199 string format = getXmlAttribute(root, Attributes::format);
200 string channels = getXmlAttribute(root, Attributes::channelMasks);
201
202 profile = new Element(formatFromString(format, gDynamicFormat),
203 channelMasksFromString(channels, ","),
204 samplingRatesFromString(samplingRates, ","));
205
206 profile->setDynamicFormat(profile->getFormat() == gDynamicFormat);
207 profile->setDynamicChannels(profile->getChannels().isEmpty());
208 profile->setDynamicRate(profile->getSampleRates().isEmpty());
209
210 return NO_ERROR;
211 }
212
213
214 const char *const MixPortTraits::collectionTag = "mixPorts";
215 const char *const MixPortTraits::tag = "mixPort";
216
217 const char MixPortTraits::Attributes::name[] = "name";
218 const char MixPortTraits::Attributes::role[] = "role";
219 const char MixPortTraits::Attributes::flags[] = "flags";
220 const char MixPortTraits::Attributes::maxOpenCount[] = "maxOpenCount";
221 const char MixPortTraits::Attributes::maxActiveCount[] = "maxActiveCount";
222
deserialize(_xmlDoc * doc,const _xmlNode * child,PtrElement & mixPort,PtrSerializingCtx)223 status_t MixPortTraits::deserialize(_xmlDoc *doc, const _xmlNode *child, PtrElement &mixPort,
224 PtrSerializingCtx /*serializingContext*/)
225 {
226 string name = getXmlAttribute(child, Attributes::name);
227 if (name.empty()) {
228 ALOGE("%s: No %s found", __FUNCTION__, Attributes::name);
229 return BAD_VALUE;
230 }
231 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::name, name.c_str());
232 string role = getXmlAttribute(child, Attributes::role);
233 if (role.empty()) {
234 ALOGE("%s: No %s found", __FUNCTION__, Attributes::role);
235 return BAD_VALUE;
236 }
237 ALOGV("%s: Role=%s", __FUNCTION__, role.c_str());
238 audio_port_role_t portRole = role == "source" ? AUDIO_PORT_ROLE_SOURCE : AUDIO_PORT_ROLE_SINK;
239
240 mixPort = new Element(String8(name.c_str()), portRole);
241
242 AudioProfileTraits::Collection profiles;
243 deserializeCollection<AudioProfileTraits>(doc, child, profiles, NULL);
244 if (profiles.isEmpty()) {
245 sp <AudioProfile> dynamicProfile = new AudioProfile(gDynamicFormat,
246 ChannelsVector(), SampleRateVector());
247 dynamicProfile->setDynamicFormat(true);
248 dynamicProfile->setDynamicChannels(true);
249 dynamicProfile->setDynamicRate(true);
250 profiles.add(dynamicProfile);
251 }
252 mixPort->setAudioProfiles(profiles);
253
254 string flags = getXmlAttribute(child, Attributes::flags);
255 if (!flags.empty()) {
256 // Source role
257 if (portRole == AUDIO_PORT_ROLE_SOURCE) {
258 mixPort->setFlags(OutputFlagConverter::maskFromString(flags));
259 } else {
260 // Sink role
261 mixPort->setFlags(InputFlagConverter::maskFromString(flags));
262 }
263 }
264 string maxOpenCount = getXmlAttribute(child, Attributes::maxOpenCount);
265 if (!maxOpenCount.empty()) {
266 convertTo(maxOpenCount, mixPort->maxOpenCount);
267 }
268 string maxActiveCount = getXmlAttribute(child, Attributes::maxActiveCount);
269 if (!maxActiveCount.empty()) {
270 convertTo(maxActiveCount, mixPort->maxActiveCount);
271 }
272 // Deserialize children
273 AudioGainTraits::Collection gains;
274 deserializeCollection<AudioGainTraits>(doc, child, gains, NULL);
275 mixPort->setGains(gains);
276
277 return NO_ERROR;
278 }
279
280 const char *const DevicePortTraits::tag = "devicePort";
281 const char *const DevicePortTraits::collectionTag = "devicePorts";
282
283 const char DevicePortTraits::Attributes::tagName[] = "tagName";
284 const char DevicePortTraits::Attributes::type[] = "type";
285 const char DevicePortTraits::Attributes::role[] = "role";
286 const char DevicePortTraits::Attributes::address[] = "address";
287 const char DevicePortTraits::Attributes::roleSource[] = "source";
288
deserialize(_xmlDoc * doc,const _xmlNode * root,PtrElement & deviceDesc,PtrSerializingCtx)289 status_t DevicePortTraits::deserialize(_xmlDoc *doc, const _xmlNode *root, PtrElement &deviceDesc,
290 PtrSerializingCtx /*serializingContext*/)
291 {
292 string name = getXmlAttribute(root, Attributes::tagName);
293 if (name.empty()) {
294 ALOGE("%s: No %s found", __FUNCTION__, Attributes::tagName);
295 return BAD_VALUE;
296 }
297 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::tagName, name.c_str());
298 string typeName = getXmlAttribute(root, Attributes::type);
299 if (typeName.empty()) {
300 ALOGE("%s: no type for %s", __FUNCTION__, name.c_str());
301 return BAD_VALUE;
302 }
303 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::type, typeName.c_str());
304 string role = getXmlAttribute(root, Attributes::role);
305 if (role.empty()) {
306 ALOGE("%s: No %s found", __FUNCTION__, Attributes::role);
307 return BAD_VALUE;
308 }
309 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::role, role.c_str());
310 audio_port_role_t portRole = (role == Attributes::roleSource) ?
311 AUDIO_PORT_ROLE_SOURCE : AUDIO_PORT_ROLE_SINK;
312
313 audio_devices_t type = AUDIO_DEVICE_NONE;
314 if (!deviceFromString(typeName, type) ||
315 (!audio_is_input_device(type) && portRole == AUDIO_PORT_ROLE_SOURCE) ||
316 (!audio_is_output_devices(type) && portRole == AUDIO_PORT_ROLE_SINK)) {
317 ALOGW("%s: bad type %08x", __FUNCTION__, type);
318 return BAD_VALUE;
319 }
320 deviceDesc = new Element(type, String8(name.c_str()));
321
322 string address = getXmlAttribute(root, Attributes::address);
323 if (!address.empty()) {
324 ALOGV("%s: address=%s for %s", __FUNCTION__, address.c_str(), name.c_str());
325 deviceDesc->mAddress = String8(address.c_str());
326 }
327
328 AudioProfileTraits::Collection profiles;
329 deserializeCollection<AudioProfileTraits>(doc, root, profiles, NULL);
330 if (profiles.isEmpty()) {
331 sp <AudioProfile> dynamicProfile = new AudioProfile(gDynamicFormat,
332 ChannelsVector(), SampleRateVector());
333 dynamicProfile->setDynamicFormat(true);
334 dynamicProfile->setDynamicChannels(true);
335 dynamicProfile->setDynamicRate(true);
336 profiles.add(dynamicProfile);
337 }
338 deviceDesc->setAudioProfiles(profiles);
339
340 // Deserialize AudioGain children
341 deserializeCollection<AudioGainTraits>(doc, root, deviceDesc->mGains, NULL);
342 ALOGV("%s: adding device tag %s type %08x address %s", __FUNCTION__,
343 deviceDesc->getName().string(), type, deviceDesc->mAddress.string());
344 return NO_ERROR;
345 }
346
347 const char *const RouteTraits::tag = "route";
348 const char *const RouteTraits::collectionTag = "routes";
349
350 const char RouteTraits::Attributes::type[] = "type";
351 const char RouteTraits::Attributes::typeMix[] = "mix";
352 const char RouteTraits::Attributes::sink[] = "sink";
353 const char RouteTraits::Attributes::sources[] = "sources";
354
355
deserialize(_xmlDoc *,const _xmlNode * root,PtrElement & element,PtrSerializingCtx ctx)356 status_t RouteTraits::deserialize(_xmlDoc */*doc*/, const _xmlNode *root, PtrElement &element,
357 PtrSerializingCtx ctx)
358 {
359 string type = getXmlAttribute(root, Attributes::type);
360 if (type.empty()) {
361 ALOGE("%s: No %s found", __FUNCTION__, Attributes::type);
362 return BAD_VALUE;
363 }
364 audio_route_type_t routeType = (type == Attributes::typeMix) ?
365 AUDIO_ROUTE_MIX : AUDIO_ROUTE_MUX;
366
367 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::type, type.c_str());
368 element = new Element(routeType);
369
370 string sinkAttr = getXmlAttribute(root, Attributes::sink);
371 if (sinkAttr.empty()) {
372 ALOGE("%s: No %s found", __FUNCTION__, Attributes::sink);
373 return BAD_VALUE;
374 }
375 // Convert Sink name to port pointer
376 sp<AudioPort> sink = ctx->findPortByTagName(String8(sinkAttr.c_str()));
377 if (sink == NULL) {
378 ALOGE("%s: no sink found with name=%s", __FUNCTION__, sinkAttr.c_str());
379 return BAD_VALUE;
380 }
381 element->setSink(sink);
382
383 string sourcesAttr = getXmlAttribute(root, Attributes::sources);
384 if (sourcesAttr.empty()) {
385 ALOGE("%s: No %s found", __FUNCTION__, Attributes::sources);
386 return BAD_VALUE;
387 }
388 // Tokenize and Convert Sources name to port pointer
389 AudioPortVector sources;
390 char *sourcesLiteral = strndup(sourcesAttr.c_str(), strlen(sourcesAttr.c_str()));
391 char *devTag = strtok(sourcesLiteral, ",");
392 while (devTag != NULL) {
393 if (strlen(devTag) != 0) {
394 sp<AudioPort> source = ctx->findPortByTagName(String8(devTag));
395 if (source == NULL) {
396 ALOGE("%s: no source found with name=%s", __FUNCTION__, devTag);
397 free(sourcesLiteral);
398 return BAD_VALUE;
399 }
400 sources.add(source);
401 }
402 devTag = strtok(NULL, ",");
403 }
404 free(sourcesLiteral);
405
406 sink->addRoute(element);
407 for (size_t i = 0; i < sources.size(); i++) {
408 sp<AudioPort> source = sources.itemAt(i);
409 source->addRoute(element);
410 }
411 element->setSources(sources);
412 return NO_ERROR;
413 }
414
415 const char *const ModuleTraits::childAttachedDevicesTag = "attachedDevices";
416 const char *const ModuleTraits::childAttachedDeviceTag = "item";
417 const char *const ModuleTraits::childDefaultOutputDeviceTag = "defaultOutputDevice";
418
419 const char *const ModuleTraits::tag = "module";
420 const char *const ModuleTraits::collectionTag = "modules";
421
422 const char ModuleTraits::Attributes::name[] = "name";
423 const char ModuleTraits::Attributes::version[] = "halVersion";
424
deserialize(xmlDocPtr doc,const xmlNode * root,PtrElement & module,PtrSerializingCtx ctx)425 status_t ModuleTraits::deserialize(xmlDocPtr doc, const xmlNode *root, PtrElement &module,
426 PtrSerializingCtx ctx)
427 {
428 string name = getXmlAttribute(root, Attributes::name);
429 if (name.empty()) {
430 ALOGE("%s: No %s found", __FUNCTION__, Attributes::name);
431 return BAD_VALUE;
432 }
433 uint32_t versionMajor = 0, versionMinor = 0;
434 string versionLiteral = getXmlAttribute(root, Attributes::version);
435 if (!versionLiteral.empty()) {
436 sscanf(versionLiteral.c_str(), "%u.%u", &versionMajor, &versionMinor);
437 ALOGV("%s: mHalVersion = major %u minor %u", __FUNCTION__,
438 versionMajor, versionMajor);
439 }
440
441 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, Attributes::name, name.c_str());
442
443 module = new Element(name.c_str(), versionMajor, versionMinor);
444
445 // Deserialize childrens: Audio Mix Port, Audio Device Ports (Source/Sink), Audio Routes
446 MixPortTraits::Collection mixPorts;
447 deserializeCollection<MixPortTraits>(doc, root, mixPorts, NULL);
448 module->setProfiles(mixPorts);
449
450 DevicePortTraits::Collection devicePorts;
451 deserializeCollection<DevicePortTraits>(doc, root, devicePorts, NULL);
452 module->setDeclaredDevices(devicePorts);
453
454 RouteTraits::Collection routes;
455 deserializeCollection<RouteTraits>(doc, root, routes, module.get());
456 module->setRoutes(routes);
457
458 const xmlNode *children = root->xmlChildrenNode;
459 while (children != NULL) {
460 if (!xmlStrcmp(children->name, (const xmlChar *)childAttachedDevicesTag)) {
461 ALOGV("%s: %s %s found", __FUNCTION__, tag, childAttachedDevicesTag);
462 const xmlNode *child = children->xmlChildrenNode;
463 while (child != NULL) {
464 if (!xmlStrcmp(child->name, (const xmlChar *)childAttachedDeviceTag)) {
465 xmlChar *attachedDevice = xmlNodeListGetString(doc, child->xmlChildrenNode, 1);
466 if (attachedDevice != NULL) {
467 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, childAttachedDeviceTag,
468 (const char*)attachedDevice);
469 sp<DeviceDescriptor> device =
470 module->getDeclaredDevices().getDeviceFromTagName(String8((const char*)attachedDevice));
471 ctx->addAvailableDevice(device);
472 xmlFree(attachedDevice);
473 }
474 }
475 child = child->next;
476 }
477 }
478 if (!xmlStrcmp(children->name, (const xmlChar *)childDefaultOutputDeviceTag)) {
479 xmlChar *defaultOutputDevice = xmlNodeListGetString(doc, children->xmlChildrenNode, 1);;
480 if (defaultOutputDevice != NULL) {
481 ALOGV("%s: %s %s=%s", __FUNCTION__, tag, childDefaultOutputDeviceTag,
482 (const char*)defaultOutputDevice);
483 sp<DeviceDescriptor> device =
484 module->getDeclaredDevices().getDeviceFromTagName(String8((const char*)defaultOutputDevice));
485 if (device != 0 && ctx->getDefaultOutputDevice() == 0) {
486 ctx->setDefaultOutputDevice(device);
487 ALOGV("%s: default is %08x", __FUNCTION__, ctx->getDefaultOutputDevice()->type());
488 }
489 xmlFree(defaultOutputDevice);
490 }
491 }
492 children = children->next;
493 }
494 return NO_ERROR;
495 }
496
497 const char *const GlobalConfigTraits::tag = "globalConfiguration";
498
499 const char GlobalConfigTraits::Attributes::speakerDrcEnabled[] = "speaker_drc_enabled";
500
501
deserialize(const xmlNode * cur,AudioPolicyConfig & config)502 status_t GlobalConfigTraits::deserialize(const xmlNode *cur, AudioPolicyConfig &config)
503 {
504 const xmlNode *root = cur->xmlChildrenNode;
505 while (root != NULL) {
506 if (!xmlStrcmp(root->name, (const xmlChar *)tag)) {
507 string speakerDrcEnabled =
508 getXmlAttribute(root, Attributes::speakerDrcEnabled);
509 bool isSpeakerDrcEnabled;
510 if (!speakerDrcEnabled.empty() &&
511 convertTo<string, bool>(speakerDrcEnabled, isSpeakerDrcEnabled)) {
512 config.setSpeakerDrcEnabled(isSpeakerDrcEnabled);
513 }
514 return NO_ERROR;
515 }
516 root = root->next;
517 }
518 return NO_ERROR;
519 }
520
521
522 const char *const VolumeTraits::tag = "volume";
523 const char *const VolumeTraits::collectionTag = "volumes";
524 const char *const VolumeTraits::volumePointTag = "point";
525
526 const char VolumeTraits::Attributes::stream[] = "stream";
527 const char VolumeTraits::Attributes::deviceCategory[] = "deviceCategory";
528 const char VolumeTraits::Attributes::reference[] = "ref";
529
deserialize(_xmlDoc * doc,const _xmlNode * root,PtrElement & element,PtrSerializingCtx)530 status_t VolumeTraits::deserialize(_xmlDoc *doc, const _xmlNode *root, PtrElement &element,
531 PtrSerializingCtx /*serializingContext*/)
532 {
533 string streamTypeLiteral = getXmlAttribute(root, Attributes::stream);
534 if (streamTypeLiteral.empty()) {
535 ALOGE("%s: No %s found", __FUNCTION__, Attributes::stream);
536 return BAD_VALUE;
537 }
538 audio_stream_type_t streamType;
539 if (!StreamTypeConverter::fromString(streamTypeLiteral, streamType)) {
540 ALOGE("%s: Invalid %s", __FUNCTION__, Attributes::stream);
541 return BAD_VALUE;
542 }
543 string deviceCategoryLiteral = getXmlAttribute(root, Attributes::deviceCategory);
544 if (deviceCategoryLiteral.empty()) {
545 ALOGE("%s: No %s found", __FUNCTION__, Attributes::deviceCategory);
546 return BAD_VALUE;
547 }
548 device_category deviceCategory;
549 if (!DeviceCategoryConverter::fromString(deviceCategoryLiteral, deviceCategory)) {
550 ALOGE("%s: Invalid %s=%s", __FUNCTION__, Attributes::deviceCategory,
551 deviceCategoryLiteral.c_str());
552 return BAD_VALUE;
553 }
554
555 string referenceName = getXmlAttribute(root, Attributes::reference);
556 const _xmlNode *ref = NULL;
557 if (!referenceName.empty()) {
558 getReference<VolumeTraits>(root->parent, ref, referenceName);
559 if (ref == NULL) {
560 ALOGE("%s: No reference Ptr found for %s", __FUNCTION__, referenceName.c_str());
561 return BAD_VALUE;
562 }
563 }
564
565 element = new Element(deviceCategory, streamType);
566
567 const xmlNode *child = referenceName.empty() ? root->xmlChildrenNode : ref->xmlChildrenNode;
568 while (child != NULL) {
569 if (!xmlStrcmp(child->name, (const xmlChar *)volumePointTag)) {
570 xmlChar *pointDefinition = xmlNodeListGetString(doc, child->xmlChildrenNode, 1);;
571 if (pointDefinition == NULL) {
572 return BAD_VALUE;
573 }
574 ALOGV("%s: %s=%s", __FUNCTION__, tag, (const char*)pointDefinition);
575 Vector<int32_t> point;
576 collectionFromString<DefaultTraits<int32_t> >((const char*)pointDefinition, point, ",");
577 if (point.size() != 2) {
578 ALOGE("%s: Invalid %s: %s", __FUNCTION__, volumePointTag,
579 (const char*)pointDefinition);
580 return BAD_VALUE;
581 }
582 element->add(CurvePoint(point[0], point[1]));
583 xmlFree(pointDefinition);
584 }
585 child = child->next;
586 }
587 return NO_ERROR;
588 }
589
PolicySerializer()590 PolicySerializer::PolicySerializer() : mRootElementName(rootName)
591 {
592 std::ostringstream oss;
593 oss << gMajor << "." << gMinor;
594 mVersion = oss.str();
595 ALOGV("%s: Version=%s Root=%s", __FUNCTION__, mVersion.c_str(), mRootElementName.c_str());
596 }
597
deserialize(const char * configFile,AudioPolicyConfig & config)598 status_t PolicySerializer::deserialize(const char *configFile, AudioPolicyConfig &config)
599 {
600 xmlDocPtr doc;
601 doc = xmlParseFile(configFile);
602 if (doc == NULL) {
603 ALOGE("%s: Could not parse %s document.", __FUNCTION__, configFile);
604 return BAD_VALUE;
605 }
606 xmlNodePtr cur = xmlDocGetRootElement(doc);
607 if (cur == NULL) {
608 ALOGE("%s: Could not parse %s document: empty.", __FUNCTION__, configFile);
609 xmlFreeDoc(doc);
610 return BAD_VALUE;
611 }
612 if (xmlXIncludeProcess(doc) < 0) {
613 ALOGE("%s: libxml failed to resolve XIncludes on %s document.", __FUNCTION__, configFile);
614 }
615
616 if (xmlStrcmp(cur->name, (const xmlChar *) mRootElementName.c_str())) {
617 ALOGE("%s: No %s root element found in xml data %s.", __FUNCTION__, mRootElementName.c_str(),
618 (const char *)cur->name);
619 xmlFreeDoc(doc);
620 return BAD_VALUE;
621 }
622
623 string version = getXmlAttribute(cur, versionAttribute);
624 if (version.empty()) {
625 ALOGE("%s: No version found in root node %s", __FUNCTION__, mRootElementName.c_str());
626 return BAD_VALUE;
627 }
628 if (version != mVersion) {
629 ALOGE("%s: Version does not match; expect %s got %s", __FUNCTION__, mVersion.c_str(),
630 version.c_str());
631 return BAD_VALUE;
632 }
633 // Lets deserialize children
634 // Modules
635 ModuleTraits::Collection modules;
636 deserializeCollection<ModuleTraits>(doc, cur, modules, &config);
637 config.setHwModules(modules);
638
639 // deserialize volume section
640 VolumeTraits::Collection volumes;
641 deserializeCollection<VolumeTraits>(doc, cur, volumes, &config);
642 config.setVolumes(volumes);
643
644 // Global Configuration
645 GlobalConfigTraits::deserialize(cur, config);
646
647 xmlFreeDoc(doc);
648 return android::OK;
649 }
650
651 } // namespace android
652