andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "device_info_impl.h" |
| 12 | #include "video_capture_config.h" |
| 13 | #include "trace.h" |
| 14 | #include <stdlib.h> |
| 15 | |
| 16 | #ifndef abs |
| 17 | #define abs(a) (a>=0?a:-a) |
| 18 | #endif |
| 19 | |
| 20 | namespace webrtc |
| 21 | { |
| 22 | namespace videocapturemodule |
| 23 | { |
| 24 | DeviceInfoImpl::DeviceInfoImpl(const WebRtc_Word32 id) |
| 25 | : _id(id), _apiLock(*RWLockWrapper::CreateRWLock()), _lastUsedDeviceName(NULL), |
| 26 | _lastUsedDeviceNameLength(0) |
| 27 | { |
| 28 | } |
| 29 | |
| 30 | DeviceInfoImpl::~DeviceInfoImpl(void) |
| 31 | { |
| 32 | _apiLock.AcquireLockExclusive(); |
| 33 | // Reset old capability list |
| 34 | MapItem* item = NULL; |
| 35 | while ((item = _captureCapabilities.Last())) |
| 36 | { |
| 37 | delete (VideoCaptureCapability*) item->GetItem(); |
| 38 | _captureCapabilities.Erase(item); |
| 39 | } |
| 40 | free(_lastUsedDeviceName); |
| 41 | _apiLock.ReleaseLockExclusive(); |
| 42 | |
| 43 | delete &_apiLock; |
| 44 | } |
| 45 | WebRtc_Word32 DeviceInfoImpl::NumberOfCapabilities( |
| 46 | const char* deviceUniqueIdUTF8) |
| 47 | { |
| 48 | |
| 49 | if (!deviceUniqueIdUTF8) |
| 50 | return -1; |
| 51 | |
| 52 | _apiLock.AcquireLockShared(); |
| 53 | |
| 54 | if (_lastUsedDeviceNameLength == strlen((char*) deviceUniqueIdUTF8)) |
| 55 | { |
| 56 | // Is it the same device that is asked for again. |
| 57 | #if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX) |
| 58 | if(strncasecmp((char*)_lastUsedDeviceName, |
| 59 | (char*) deviceUniqueIdUTF8, |
| 60 | _lastUsedDeviceNameLength)==0) |
| 61 | #else |
| 62 | if (_strnicmp((char*) _lastUsedDeviceName, |
| 63 | (char*) deviceUniqueIdUTF8, |
| 64 | _lastUsedDeviceNameLength) == 0) |
| 65 | #endif |
| 66 | { |
| 67 | //yes |
| 68 | _apiLock.ReleaseLockShared(); |
| 69 | return _captureCapabilities.Size(); |
| 70 | } |
| 71 | } |
| 72 | // Need to get exclusive rights to create the new capability map. |
| 73 | _apiLock.ReleaseLockShared(); |
| 74 | WriteLockScoped cs2(_apiLock); |
| 75 | |
| 76 | WebRtc_Word32 ret = CreateCapabilityMap(deviceUniqueIdUTF8); |
| 77 | return ret; |
| 78 | } |
| 79 | |
| 80 | WebRtc_Word32 DeviceInfoImpl::GetCapability(const char* deviceUniqueIdUTF8, |
| 81 | const WebRtc_UWord32 deviceCapabilityNumber, |
| 82 | VideoCaptureCapability& capability) |
| 83 | { |
| 84 | |
| 85 | if (!deviceUniqueIdUTF8) |
| 86 | { |
| 87 | WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, _id, |
| 88 | "deviceUniqueIdUTF8 parameter not set in call to GetCapability"); |
| 89 | return -1; |
| 90 | } |
| 91 | ReadLockScoped cs(_apiLock); |
| 92 | |
| 93 | if ((_lastUsedDeviceNameLength != strlen((char*) deviceUniqueIdUTF8)) |
| 94 | #if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX) |
| 95 | || (strncasecmp((char*)_lastUsedDeviceName, |
| 96 | (char*) deviceUniqueIdUTF8, |
| 97 | _lastUsedDeviceNameLength)!=0)) |
| 98 | #else |
| 99 | || (_strnicmp((char*) _lastUsedDeviceName, |
| 100 | (char*) deviceUniqueIdUTF8, |
| 101 | _lastUsedDeviceNameLength) != 0)) |
| 102 | #endif |
| 103 | |
| 104 | { |
| 105 | _apiLock.ReleaseLockShared(); |
| 106 | _apiLock.AcquireLockExclusive(); |
| 107 | if (-1 == CreateCapabilityMap(deviceUniqueIdUTF8)) |
| 108 | { |
| 109 | _apiLock.ReleaseLockExclusive(); |
| 110 | _apiLock.AcquireLockShared(); |
| 111 | return -1; |
| 112 | } |
| 113 | _apiLock.ReleaseLockExclusive(); |
| 114 | _apiLock.AcquireLockShared(); |
| 115 | } |
| 116 | |
| 117 | // Make sure the number is valid |
| 118 | if (deviceCapabilityNumber >= (unsigned int) _captureCapabilities.Size()) |
| 119 | { |
| 120 | WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, _id, |
| 121 | "deviceCapabilityNumber %d is invalid in call to GetCapability", |
| 122 | deviceCapabilityNumber); |
| 123 | return -1; |
| 124 | } |
| 125 | |
| 126 | MapItem* item = _captureCapabilities.Find(deviceCapabilityNumber); |
| 127 | if (!item) |
| 128 | { |
| 129 | WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, _id, |
| 130 | "Failed to find capability number %d of %d possible", |
| 131 | deviceCapabilityNumber, _captureCapabilities.Size()); |
| 132 | return -1; |
| 133 | } |
| 134 | |
| 135 | VideoCaptureCapability* capPointer = static_cast<VideoCaptureCapability*> |
| 136 | (item->GetItem()); |
| 137 | if (!capPointer) |
| 138 | { |
| 139 | return -1; |
| 140 | } |
| 141 | |
| 142 | capability = *capPointer; |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | WebRtc_Word32 DeviceInfoImpl::GetBestMatchedCapability( |
| 147 | const char*deviceUniqueIdUTF8, |
| 148 | const VideoCaptureCapability& requested, |
| 149 | VideoCaptureCapability& resulting) |
| 150 | { |
| 151 | |
| 152 | |
| 153 | if (!deviceUniqueIdUTF8) |
| 154 | return -1; |
| 155 | |
| 156 | ReadLockScoped cs(_apiLock); |
| 157 | if ((_lastUsedDeviceNameLength != strlen((char*) deviceUniqueIdUTF8)) |
| 158 | #if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX) |
| 159 | || (strncasecmp((char*)_lastUsedDeviceName, |
| 160 | (char*) deviceUniqueIdUTF8, |
| 161 | _lastUsedDeviceNameLength)!=0)) |
| 162 | #else |
| 163 | || (_strnicmp((char*) _lastUsedDeviceName, |
| 164 | (char*) deviceUniqueIdUTF8, |
| 165 | _lastUsedDeviceNameLength) != 0)) |
| 166 | #endif |
| 167 | { |
| 168 | _apiLock.ReleaseLockShared(); |
| 169 | _apiLock.AcquireLockExclusive(); |
| 170 | if (-1 == CreateCapabilityMap(deviceUniqueIdUTF8)) |
| 171 | { |
| 172 | return -1; |
| 173 | } |
| 174 | _apiLock.ReleaseLockExclusive(); |
| 175 | _apiLock.AcquireLockShared(); |
| 176 | } |
| 177 | |
| 178 | WebRtc_Word32 bestformatIndex = -1; |
| 179 | WebRtc_Word32 bestWidth = 0; |
| 180 | WebRtc_Word32 bestHeight = 0; |
| 181 | WebRtc_Word32 bestFrameRate = 0; |
| 182 | RawVideoType bestRawType = kVideoUnknown; |
| 183 | webrtc::VideoCodecType bestCodecType = webrtc::kVideoCodecUnknown; |
| 184 | |
| 185 | const WebRtc_Word32 numberOfCapabilies = _captureCapabilities.Size(); |
| 186 | |
| 187 | for (WebRtc_Word32 tmp = 0; tmp < numberOfCapabilies; ++tmp) // Loop through all capabilities |
| 188 | { |
| 189 | MapItem* item = _captureCapabilities.Find(tmp); |
| 190 | if (!item) |
| 191 | return -1; |
| 192 | |
| 193 | VideoCaptureCapability& capability = *static_cast<VideoCaptureCapability*> |
| 194 | (item->GetItem()); |
| 195 | |
| 196 | const WebRtc_Word32 diffWidth = capability.width - requested.width; |
| 197 | const WebRtc_Word32 diffHeight = capability.height - requested.height; |
| 198 | const WebRtc_Word32 diffFrameRate = capability.maxFPS - requested.maxFPS; |
| 199 | |
| 200 | const WebRtc_Word32 currentbestDiffWith = bestWidth - requested.width; |
| 201 | const WebRtc_Word32 currentbestDiffHeight = bestHeight - requested.height; |
| 202 | const WebRtc_Word32 currentbestDiffFrameRate = bestFrameRate - requested.maxFPS; |
| 203 | |
| 204 | if ((diffHeight >= 0 && diffHeight <= abs(currentbestDiffHeight)) // Height better or equalt that previouse. |
| 205 | || (currentbestDiffHeight < 0 && diffHeight >= currentbestDiffHeight)) |
| 206 | { |
| 207 | |
| 208 | if (diffHeight == currentbestDiffHeight) // Found best height. Care about the width) |
| 209 | { |
| 210 | if ((diffWidth >= 0 && diffWidth <= abs(currentbestDiffWith)) // Width better or equal |
| 211 | || (currentbestDiffWith < 0 && diffWidth >= currentbestDiffWith)) |
| 212 | { |
| 213 | if (diffWidth == currentbestDiffWith && diffHeight |
| 214 | == currentbestDiffHeight) // Same size as previously |
| 215 | { |
| 216 | //Also check the best frame rate if the diff is the same as previouse |
| 217 | if (((diffFrameRate >= 0 && |
| 218 | diffFrameRate <= currentbestDiffFrameRate) // Frame rate to high but better match than previouse and we have not selected IUV |
| 219 | || |
| 220 | (currentbestDiffFrameRate < 0 && |
| 221 | diffFrameRate >= currentbestDiffFrameRate)) // Current frame rate is lower than requested. This is better. |
| 222 | ) |
| 223 | { |
| 224 | if ((currentbestDiffFrameRate == diffFrameRate) // Same frame rate as previous or frame rate allready good enough |
| 225 | || (currentbestDiffFrameRate >= 0)) |
| 226 | { |
| 227 | if (bestRawType != requested.rawType |
| 228 | && requested.rawType != kVideoUnknown |
| 229 | && (capability.rawType == requested.rawType |
| 230 | || capability.rawType == kVideoI420 |
| 231 | || capability.rawType == kVideoYUY2 |
| 232 | || capability.rawType == kVideoYV12)) |
| 233 | { |
| 234 | bestCodecType = capability.codecType; |
| 235 | bestRawType = capability.rawType; |
| 236 | bestformatIndex = tmp; |
| 237 | } |
| 238 | // If width height and frame rate is full filled we can use the camera for encoding if it is supported. |
| 239 | if (capability.height == requested.height |
| 240 | && capability.width == requested.width |
| 241 | && capability.maxFPS >= requested.maxFPS) |
| 242 | { |
| 243 | if (capability.codecType == requested.codecType |
| 244 | && bestCodecType != requested.codecType) |
| 245 | { |
| 246 | bestCodecType = capability.codecType; |
| 247 | bestformatIndex = tmp; |
| 248 | } |
| 249 | } |
| 250 | } |
| 251 | else // Better frame rate |
| 252 | { |
| 253 | if (requested.codecType == capability.codecType) |
| 254 | { |
| 255 | |
| 256 | bestWidth = capability.width; |
| 257 | bestHeight = capability.height; |
| 258 | bestFrameRate = capability.maxFPS; |
| 259 | bestCodecType = capability.codecType; |
| 260 | bestRawType = capability.rawType; |
| 261 | bestformatIndex = tmp; |
| 262 | } |
| 263 | } |
| 264 | } |
| 265 | } |
| 266 | else // Better width than previously |
| 267 | { |
| 268 | if (requested.codecType == capability.codecType) |
| 269 | { |
| 270 | bestWidth = capability.width; |
| 271 | bestHeight = capability.height; |
| 272 | bestFrameRate = capability.maxFPS; |
| 273 | bestCodecType = capability.codecType; |
| 274 | bestRawType = capability.rawType; |
| 275 | bestformatIndex = tmp; |
| 276 | } |
| 277 | } |
| 278 | }// else width no good |
| 279 | } |
| 280 | else // Better height |
| 281 | { |
| 282 | if (requested.codecType == capability.codecType) |
| 283 | { |
| 284 | bestWidth = capability.width; |
| 285 | bestHeight = capability.height; |
| 286 | bestFrameRate = capability.maxFPS; |
| 287 | bestCodecType = capability.codecType; |
| 288 | bestRawType = capability.rawType; |
| 289 | bestformatIndex = tmp; |
| 290 | } |
| 291 | } |
| 292 | }// else height not good |
| 293 | }//end for |
| 294 | |
| 295 | WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, _id, |
| 296 | "Best camera format: Width %d, Height %d, Frame rate %d, Color format %d", |
| 297 | bestWidth, bestHeight, bestFrameRate, bestRawType); |
| 298 | |
| 299 | // Copy the capability |
| 300 | MapItem* item = _captureCapabilities.Find(bestformatIndex); |
| 301 | if (!item) |
| 302 | return -1; |
| 303 | VideoCaptureCapability* capPointer = |
| 304 | static_cast<VideoCaptureCapability*> (item->GetItem()); |
| 305 | if (!capPointer) |
| 306 | return -1; |
| 307 | |
| 308 | resulting = *capPointer; |
| 309 | |
| 310 | return bestformatIndex; |
| 311 | } |
| 312 | |
| 313 | /* Returns the expected Capture delay*/ |
| 314 | WebRtc_Word32 DeviceInfoImpl::GetExpectedCaptureDelay( |
| 315 | const DelayValues delayValues[], |
| 316 | const WebRtc_UWord32 sizeOfDelayValues, |
| 317 | const char* productId, |
| 318 | const WebRtc_UWord32 width, |
| 319 | const WebRtc_UWord32 height) |
| 320 | { |
| 321 | WebRtc_Word32 bestDelay = kDefaultCaptureDelay; |
| 322 | |
| 323 | for (WebRtc_UWord32 device = 0; device < sizeOfDelayValues; ++device) |
| 324 | { |
| 325 | if (delayValues[device].productId && strncmp((char*) productId, |
| 326 | (char*) delayValues[device].productId, |
| 327 | kVideoCaptureProductIdLength) == 0) |
| 328 | { |
| 329 | // We have found the camera |
| 330 | |
| 331 | WebRtc_Word32 bestWidth = 0; |
| 332 | WebRtc_Word32 bestHeight = 0; |
| 333 | |
| 334 | //Loop through all tested sizes and find one that seems fitting |
| 335 | for (WebRtc_UWord32 delayIndex = 0; delayIndex < NoOfDelayValues; ++delayIndex) |
| 336 | { |
| 337 | const DelayValue& currentValue = delayValues[device].delayValues[delayIndex]; |
| 338 | |
| 339 | const WebRtc_Word32 diffWidth = currentValue.width - width; |
| 340 | const WebRtc_Word32 diffHeight = currentValue.height - height; |
| 341 | |
| 342 | const WebRtc_Word32 currentbestDiffWith = bestWidth - width; |
| 343 | const WebRtc_Word32 currentbestDiffHeight = bestHeight - height; |
| 344 | |
| 345 | if ((diffHeight >= 0 && diffHeight <= abs(currentbestDiffHeight)) // Height better or equal than previous. |
| 346 | || (currentbestDiffHeight < 0 && diffHeight >= currentbestDiffHeight)) |
| 347 | { |
| 348 | |
| 349 | if (diffHeight == currentbestDiffHeight) // Found best height. Care about the width) |
| 350 | { |
| 351 | if ((diffWidth >= 0 && diffWidth <= abs(currentbestDiffWith)) // Width better or equal |
| 352 | || (currentbestDiffWith < 0 && diffWidth >= currentbestDiffWith)) |
| 353 | { |
| 354 | if (diffWidth == currentbestDiffWith && diffHeight |
| 355 | == currentbestDiffHeight) // Same size as previous |
| 356 | { |
| 357 | } |
| 358 | else // Better width than previously |
| 359 | { |
| 360 | bestWidth = currentValue.width; |
| 361 | bestHeight = currentValue.height; |
| 362 | bestDelay = currentValue.delay; |
| 363 | } |
| 364 | }// else width no good |
| 365 | } |
| 366 | else // Better height |
| 367 | { |
| 368 | bestWidth = currentValue.width; |
| 369 | bestHeight = currentValue.height; |
| 370 | bestDelay = currentValue.delay; |
| 371 | } |
| 372 | }// else height not good |
| 373 | }//end for |
| 374 | break; |
| 375 | } |
| 376 | } |
| 377 | if (bestDelay > kMaxCaptureDelay) |
| 378 | { |
| 379 | WEBRTC_TRACE(webrtc::kTraceWarning, webrtc::kTraceVideoCapture, _id, |
| 380 | "Expected capture delay too high. %dms, will use %d", bestDelay, |
| 381 | kMaxCaptureDelay); |
| 382 | bestDelay = kMaxCaptureDelay; |
| 383 | |
| 384 | } |
| 385 | |
| 386 | return bestDelay; |
| 387 | |
| 388 | } |
| 389 | |
| 390 | //Default implementation. This should be overridden by Mobile implementations. |
| 391 | WebRtc_Word32 DeviceInfoImpl::GetOrientation(const char* deviceUniqueIdUTF8, |
| 392 | VideoCaptureRotation& orientation) |
| 393 | { |
| 394 | orientation = kCameraRotate0; |
| 395 | return -1; |
| 396 | } |
| 397 | } //namespace videocapturemodule |
| 398 | } // namespace webrtc |
| 399 | |
| 400 | |