oculus1: e2f9e4603129 libovr/Src/OVR

oculus1

view libovr/Src/OVR_Profile.cpp @ 1:e2f9e4603129

added LibOVR and started a simple vr wrapper.

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sat, 14 Sep 2013 16:14:59 +0300
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children

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1 /************************************************************************************

3 PublicHeader: None

4 Filename : OVR_Profile.cpp

5 Content : Structs and functions for loading and storing device profile settings

6 Created : February 14, 2013

7 Notes :

9 Profiles are used to store per-user settings that can be transferred and used

10 across multiple applications. For example, player IPD can be configured once

11 and reused for a unified experience across games. Configuration and saving of profiles

12 can be accomplished in game via the Profile API or by the official Oculus Configuration

13 Utility.

17 Use of this software is subject to the terms of the Oculus license

18 agreement provided at the time of installation or download, or which

19 otherwise accompanies this software in either electronic or hard copy form.

21 ************************************************************************************/

23 #include "OVR_Profile.h"

24 #include "OVR_JSON.h"

25 #include "Kernel/OVR_Types.h"

26 #include "Kernel/OVR_SysFile.h"

27 #include "Kernel/OVR_Allocator.h"

28 #include "Kernel/OVR_Array.h"

30 #ifdef OVR_OS_WIN32

31 #include <Shlobj.h>

32 #else

33 #include <dirent.h>

34 #include <sys/stat.h>

36 #ifdef OVR_OS_LINUX

37 #include <unistd.h>

38 #include <pwd.h>

39 #endif

41 #endif

43 #define PROFILE_VERSION 1.0

45 namespace OVR {

47 //-----------------------------------------------------------------------------

48 // Returns the pathname of the JSON file containing the stored profiles

49 String GetBaseOVRPath(bool create_dir)

50 {

51 String path;

53 #if defined(OVR_OS_WIN32)

55 TCHAR data_path[MAX_PATH];

56 SHGetFolderPath(0, CSIDL_LOCAL_APPDATA, NULL, 0, data_path);

57 path = String(data_path);

59 path += "/Oculus";

61 if (create_dir)

62 { // Create the Oculus directory if it doesn't exist

63 WCHAR wpath[128];

64 OVR::UTF8Util::DecodeString(wpath, path.ToCStr());

66 DWORD attrib = GetFileAttributes(wpath);

67 bool exists = attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY);

68 if (!exists)

69 {

70 CreateDirectory(wpath, NULL);

71 }

72 }

74 #elif defined(OVR_OS_MAC)

76 const char* home = getenv("HOME");

77 path = home;

78 path += "/Library/Preferences/Oculus";

80 if (create_dir)

81 { // Create the Oculus directory if it doesn't exist

82 DIR* dir = opendir(path);

83 if (dir == NULL)

84 {

85 mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO);

86 }

87 else

88 {

89 closedir(dir);

90 }

91 }

93 #else

95 passwd* pwd = getpwuid(getuid());

96 const char* home = pwd->pw_dir;

97 path = home;

98 path += "/.config/Oculus";

100 if (create_dir)

101 { // Create the Oculus directory if it doesn't exist

102 DIR* dir = opendir(path);

103 if (dir == NULL)

104 {

105 mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO);

106 }

107 else

108 {

109 closedir(dir);

110 }

111 }

112

113 #endif

114

115 return path;

116 }

117

118 String GetProfilePath(bool create_dir)

119 {

120 String path = GetBaseOVRPath(create_dir);

121 path += "/Profiles.json";

122 return path;

123 }

124

125 //-----------------------------------------------------------------------------

126 // ***** ProfileManager

127

128 ProfileManager::ProfileManager()

129 {

130 Changed = false;

131 CacheDevice = Profile_Unknown;

132 }

133

134 ProfileManager::~ProfileManager()

135 {

136 // If the profiles have been altered then write out the profile file

137 if (Changed)

138 SaveCache();

139

140 ClearCache();

141 }

142

143 ProfileManager* ProfileManager::Create()

144 {

145 return new ProfileManager();

146 }

147

148 Profile* ProfileManager::CreateProfileObject(const char* user,

149 ProfileType device,

150 const char** device_name)

151 {

152 Lock::Locker lockScope(&ProfileLock);

153

154 Profile* profile = NULL;

155 switch (device)

156 {

157 case Profile_RiftDK1:

158 *device_name = "RiftDK1";

159 profile = new RiftDK1Profile(user);

160 break;

161 case Profile_RiftDKHD:

162 case Profile_Unknown:

163 break;

164 }

165

166 return profile;

167 }

168

169

170 // Clear the local profile cache

171 void ProfileManager::ClearCache()

172 {

173 Lock::Locker lockScope(&ProfileLock);

174

175 ProfileCache.Clear();

176 CacheDevice = Profile_Unknown;

177 }

178

179

180 // Poplulates the local profile cache. This occurs on the first access of the profile

181 // data. All profile operations are performed against the local cache until the

182 // ProfileManager is released or goes out of scope at which time the cache is serialized

183 // to disk.

184 void ProfileManager::LoadCache(ProfileType device)

185 {

186 Lock::Locker lockScope(&ProfileLock);

187

188 ClearCache();

189

190 String path = GetProfilePath(false);

191

192 Ptr<JSON> root = *JSON::Load(path);

193 if (!root || root->GetItemCount() < 3)

194 return;

195

196 // First read the file type and version to make sure this is a valid file

197 JSON* item0 = root->GetFirstItem();

198 JSON* item1 = root->GetNextItem(item0);

199 JSON* item2 = root->GetNextItem(item1);

200

201 if (OVR_strcmp(item0->Name, "Oculus Profile Version") == 0)

202 { // In the future I may need to check versioning to determine parse method

203 }

204 else

205 {

206 return;

207 }

208

209 DefaultProfile = item1->Value;

210

211 // Read the number of profiles

212 int profileCount = (int)item2->dValue;

213 JSON* profileItem = item2;

214

215 for (int p=0; p<profileCount; p++)

216 {

217 profileItem = profileItem->GetNextItem(profileItem);

218 if (!profileItem)

219 break;

220

221 // Read the required Name field

222 const char* profileName;

223 JSON* item = profileItem->GetFirstItem();

224

225 if (item && (OVR_strcmp(item->Name, "Name") == 0))

226 {

227 profileName = item->Value;

228 }

229 else

230 {

231 return; // invalid field

232 }

233

234 const char* deviceName = 0;

235 bool deviceFound = false;

236 Ptr<Profile> profile = *CreateProfileObject(profileName, device, &deviceName);

237

238 // Read the base profile fields.

239 if (profile)

240 {

241 while (item = profileItem->GetNextItem(item), item)

242 {

243 if (item->Type != JSON_Object)

244 {

245 profile->ParseProperty(item->Name, item->Value);

246 }

247 else

248 { // Search for the matching device to get device specific fields

249 if (!deviceFound && OVR_strcmp(item->Name, deviceName) == 0)

250 {

251 deviceFound = true;

252

253 for (JSON* deviceItem = item->GetFirstItem(); deviceItem;

254 deviceItem = item->GetNextItem(deviceItem))

255 {

256 profile->ParseProperty(deviceItem->Name, deviceItem->Value);

257 }

258 }

259 }

260 }

261 }

262

263 // Add the new profile

264 if (deviceFound)

265 ProfileCache.PushBack(profile);

266 }

267

268 CacheDevice = device;

269 }

270

271

272 // Serializes the profiles to disk.

273 void ProfileManager::SaveCache()

274 {

275 String path = GetProfilePath(true);

276

277 Lock::Locker lockScope(&ProfileLock);

278

279 // TODO: Since there is only a single device type now, a full tree overwrite

280 // is sufficient but in the future a selective device branch replacement will

281 // be necessary

282

283 Ptr<JSON> root = *JSON::CreateObject();

284 root->AddNumberItem("Oculus Profile Version", PROFILE_VERSION);

285 root->AddStringItem("CurrentProfile", DefaultProfile);

286 root->AddNumberItem("ProfileCount", (double) ProfileCache.GetSize());

287

288 // Generate a JSON subtree for each profile

289 for (unsigned int i=0; i<ProfileCache.GetSize(); i++)

290 {

291 Profile* profile = ProfileCache[i];

292

293 JSON* json_profile = JSON::CreateObject();

294 json_profile->Name = "Profile";

295 json_profile->AddStringItem("Name", profile->Name);

296 const char* gender;

297 switch (profile->GetGender())

298 {

299 case Profile::Gender_Male: gender = "Male"; break;

300 case Profile::Gender_Female: gender = "Female"; break;

301 default: gender = "Unspecified";

302 }

303 json_profile->AddStringItem("Gender", gender);

304 json_profile->AddNumberItem("PlayerHeight", profile->PlayerHeight);

305 json_profile->AddNumberItem("IPD", profile->IPD);

306

307 if (profile->Type == Profile_RiftDK1)

308 {

309 RiftDK1Profile* riftdk1 = (RiftDK1Profile*)profile;

310 JSON* json_riftdk1 = JSON::CreateObject();

311 json_profile->AddItem("RiftDK1", json_riftdk1);

312

313 const char* eyecup = "A";

314 switch (riftdk1->EyeCups)

315 {

316 case RiftDK1Profile::EyeCup_A: eyecup = "A"; break;

317 case RiftDK1Profile::EyeCup_B: eyecup = "B"; break;

318 case RiftDK1Profile::EyeCup_C: eyecup = "C"; break;

319 }

320 json_riftdk1->AddStringItem("EyeCup", eyecup);

321 json_riftdk1->AddNumberItem("LL", riftdk1->LL);

322 json_riftdk1->AddNumberItem("LR", riftdk1->LR);

323 json_riftdk1->AddNumberItem("RL", riftdk1->RL);

324 json_riftdk1->AddNumberItem("RR", riftdk1->RR);

325 }

326

327 root->AddItem("Profile", json_profile);

328 }

329

330 root->Save(path);

331 }

332

333 // Returns the number of stored profiles for this device type

334 int ProfileManager::GetProfileCount(ProfileType device)

335 {

336 Lock::Locker lockScope(&ProfileLock);

337

338 if (CacheDevice == Profile_Unknown)

339 LoadCache(device);

340

341 return (int)ProfileCache.GetSize();

342 }

343

344 // Returns the profile name of a specific profile in the list. The returned

345 // memory is locally allocated and should not be stored or deleted. Returns NULL

346 // if the index is invalid

347 const char* ProfileManager::GetProfileName(ProfileType device, unsigned int index)

348 {

349 Lock::Locker lockScope(&ProfileLock);

350

351 if (CacheDevice == Profile_Unknown)

352 LoadCache(device);

353

354 if (index < ProfileCache.GetSize())

355 {

356 Profile* profile = ProfileCache[index];

357 OVR_strcpy(NameBuff, Profile::MaxNameLen, profile->Name);

358 return NameBuff;

359 }

360 else

361 {

362 return NULL;

363 }

364 }

365

366 bool ProfileManager::HasProfile(ProfileType device, const char* name)

367 {

368 Lock::Locker lockScope(&ProfileLock);

369

370 if (CacheDevice == Profile_Unknown)

371 LoadCache(device);

372

373 for (unsigned i = 0; i< ProfileCache.GetSize(); i++)

374 {

375 if (ProfileCache[i] && OVR_strcmp(ProfileCache[i]->Name, name) == 0)

376 return true;

377 }

378 return false;

379 }

380

381

382 // Returns a specific profile object in the list. The returned memory should be

383 // encapsulated in a Ptr<> object or released after use. Returns NULL if the index

384 // is invalid

385 Profile* ProfileManager::LoadProfile(ProfileType device, unsigned int index)

386 {

387 Lock::Locker lockScope(&ProfileLock);

388

389 if (CacheDevice == Profile_Unknown)

390 LoadCache(device);

391

392 if (index < ProfileCache.GetSize())

393 {

394 Profile* profile = ProfileCache[index];

395 return profile->Clone();

396 }

397 else

398 {

399 return NULL;

400 }

401 }

402

403 // Returns a profile object for a particular device and user name. The returned

404 // memory should be encapsulated in a Ptr<> object or released after use. Returns

405 // NULL if the profile is not found

406 Profile* ProfileManager::LoadProfile(ProfileType device, const char* user)

407 {

408 if (user == NULL)

409 return NULL;

410

411 Lock::Locker lockScope(&ProfileLock);

412

413 if (CacheDevice == Profile_Unknown)

414 LoadCache(device);

415

416 for (unsigned int i=0; i<ProfileCache.GetSize(); i++)

417 {

418 if (OVR_strcmp(user, ProfileCache[i]->Name) == 0)

419 { // Found the requested user profile

420 Profile* profile = ProfileCache[i];

421 return profile->Clone();

422 }

423 }

424

425 return NULL;

426 }

427

428 // Returns a profile with all system default values

429 Profile* ProfileManager::GetDeviceDefaultProfile(ProfileType device)

430 {

431 const char* device_name = NULL;

432 return CreateProfileObject("default", device, &device_name);

433 }

434

435 // Returns the name of the profile that is marked as the current default user.

436 const char* ProfileManager::GetDefaultProfileName(ProfileType device)

437 {

438 Lock::Locker lockScope(&ProfileLock);

439

440 if (CacheDevice == Profile_Unknown)

441 LoadCache(device);

442

443 if (ProfileCache.GetSize() > 0)

444 {

445 OVR_strcpy(NameBuff, Profile::MaxNameLen, DefaultProfile);

446 return NameBuff;

447 }

448 else

449 {

450 return NULL;

451 }

452 }

453

454 // Marks a particular user as the current default user.

455 bool ProfileManager::SetDefaultProfileName(ProfileType device, const char* name)

456 {

457 Lock::Locker lockScope(&ProfileLock);

458

459 if (CacheDevice == Profile_Unknown)

460 LoadCache(device);

461 // TODO: I should verify that the user is valid

462 if (ProfileCache.GetSize() > 0)

463 {

464 DefaultProfile = name;

465 Changed = true;

466 return true;

467 }

468 else

469 {

470 return false;

471 }

472 }

473

474

475 // Saves a new or existing profile. Returns true on success or false on an

476 // invalid or failed save.

477 bool ProfileManager::Save(const Profile* profile)

478 {

479 Lock::Locker lockScope(&ProfileLock);

480

481 if (OVR_strcmp(profile->Name, "default") == 0)

482 return false; // don't save a default profile

483

484 // TODO: I should also verify that this profile type matches the current cache

485 if (CacheDevice == Profile_Unknown)

486 LoadCache(profile->Type);

487

488 // Look for the pre-existence of this profile

489 bool added = false;

490 for (unsigned int i=0; i<ProfileCache.GetSize(); i++)

491 {

492 int compare = OVR_strcmp(profile->Name, ProfileCache[i]->Name);

493

494 if (compare == 0)

495 {

496 // TODO: I should do a proper field comparison to avoid unnecessary

497 // overwrites and file saves

498

499 // Replace the previous instance with the new profile

500 ProfileCache[i] = *profile->Clone();

501 added = true;

502 Changed = true;

503 break;

504 }

505 }

506

507 if (!added)

508 {

509 ProfileCache.PushBack(*profile->Clone());

510 if (ProfileCache.GetSize() == 1)

511 CacheDevice = profile->Type;

512

513 Changed = true;

514 }

515

516 return true;

517 }

518

519 // Removes an existing profile. Returns true if the profile was found and deleted

520 // and returns false otherwise.

521 bool ProfileManager::Delete(const Profile* profile)

522 {

523 Lock::Locker lockScope(&ProfileLock);

524

525 if (OVR_strcmp(profile->Name, "default") == 0)

526 return false; // don't delete a default profile

527

528 if (CacheDevice == Profile_Unknown)

529 LoadCache(profile->Type);

530

531 // Look for the existence of this profile

532 for (unsigned int i=0; i<ProfileCache.GetSize(); i++)

533 {

534 if (OVR_strcmp(profile->Name, ProfileCache[i]->Name) == 0)

535 {

536 if (OVR_strcmp(profile->Name, DefaultProfile) == 0)

537 DefaultProfile.Clear();

538

539 ProfileCache.RemoveAt(i);

540 Changed = true;

541 return true;

542 }

543 }

544

545 return false;

546 }

547

548

549

550 //-----------------------------------------------------------------------------

551 // ***** Profile

552

553 Profile::Profile(ProfileType device, const char* name)

554 {

555 Type = device;

556 Gender = Gender_Unspecified;

557 PlayerHeight = 1.778f; // 5'10" inch man

558 IPD = 0.064f;

559 OVR_strcpy(Name, MaxNameLen, name);

560 }

561

562

563 bool Profile::ParseProperty(const char* prop, const char* sval)

564 {

565 if (OVR_strcmp(prop, "Name") == 0)

566 {

567 OVR_strcpy(Name, MaxNameLen, sval);

568 return true;

569 }

570 else if (OVR_strcmp(prop, "Gender") == 0)

571 {

572 if (OVR_strcmp(sval, "Male") == 0)

573 Gender = Gender_Male;

574 else if (OVR_strcmp(sval, "Female") == 0)

575 Gender = Gender_Female;

576 else

577 Gender = Gender_Unspecified;

578

579 return true;

580 }

581 else if (OVR_strcmp(prop, "PlayerHeight") == 0)

582 {

583 PlayerHeight = (float)atof(sval);

584 return true;

585 }

586 else if (OVR_strcmp(prop, "IPD") == 0)

587 {

588 IPD = (float)atof(sval);

589 return true;

590 }

591

592 return false;

593 }

594

595

596 // Computes the eye height from the metric head height

597 float Profile::GetEyeHeight()

598 {

599 const float EYE_TO_HEADTOP_RATIO = 0.44538f;

600 const float MALE_AVG_HEAD_HEIGHT = 0.232f;

601 const float FEMALE_AVG_HEAD_HEIGHT = 0.218f;

602

603 // compute distance from top of skull to the eye

604 float head_height;

605 if (Gender == Gender_Female)

606 head_height = FEMALE_AVG_HEAD_HEIGHT;

607 else

608 head_height = MALE_AVG_HEAD_HEIGHT;

609

610 float skull = EYE_TO_HEADTOP_RATIO * head_height;

611

612 float eye_height = PlayerHeight - skull;

613 return eye_height;

614 }

615

616

617 //-----------------------------------------------------------------------------

618 // ***** RiftDK1Profile

619

620 RiftDK1Profile::RiftDK1Profile(const char* name) : Profile(Profile_RiftDK1, name)

621 {

622 EyeCups = EyeCup_A;

623 LL = 0;

624 LR = 0;

625 RL = 0;

626 RR = 0;

627 }

628

629 bool RiftDK1Profile::ParseProperty(const char* prop, const char* sval)

630 {

631 if (OVR_strcmp(prop, "EyeCup") == 0)

632 {

633 switch (sval[0])

634 {

635 case 'C': EyeCups = EyeCup_C; break;

636 case 'B': EyeCups = EyeCup_B; break;

637 default: EyeCups = EyeCup_A; break;

638 }

639 return true;

640 }

641 else if (OVR_strcmp(prop, "LL") == 0)

642 {

643 LL = atoi(sval);

644 return true;

645 }

646 else if (OVR_strcmp(prop, "LR") == 0)

647 {

648 LR = atoi(sval);

649 return true;

650 }

651 else if (OVR_strcmp(prop, "RL") == 0)

652 {

653 RL = atoi(sval);

654 return true;

655 }

656 else if (OVR_strcmp(prop, "RR") == 0)

657 {

658 RR = atoi(sval);

659 return true;

660 }

661

662 return Profile::ParseProperty(prop, sval);

663 }

664

665 Profile* RiftDK1Profile::Clone() const

666 {

667 RiftDK1Profile* profile = new RiftDK1Profile(*this);

668 return profile;

669 }

670

671 } // OVR