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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/browser/chromeos/camera_detector.h" | 5 #include "chrome/browser/chromeos/camera_detector.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/file_util.h" | 8 #include "base/file_util.h" |
| 9 #include "base/files/file_enumerator.h" | 9 #include "base/files/file_enumerator.h" |
| 10 #include "base/location.h" | 10 #include "base/location.h" |
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| 66 // static | 66 // static |
| 67 bool CameraDetector::CheckPresence() { | 67 bool CameraDetector::CheckPresence() { |
| 68 // We do a quick check using udev database because opening each /dev/videoX | 68 // We do a quick check using udev database because opening each /dev/videoX |
| 69 // device may trigger costly device initialization. | 69 // device may trigger costly device initialization. |
| 70 base::FileEnumerator file_enum( | 70 base::FileEnumerator file_enum( |
| 71 base::FilePath(kV4LSubsystemDir), false /* not recursive */, | 71 base::FilePath(kV4LSubsystemDir), false /* not recursive */, |
| 72 base::FileEnumerator::FILES | base::FileEnumerator::SHOW_SYM_LINKS); | 72 base::FileEnumerator::FILES | base::FileEnumerator::SHOW_SYM_LINKS); |
| 73 for (base::FilePath path = file_enum.Next(); !path.empty(); | 73 for (base::FilePath path = file_enum.Next(); !path.empty(); |
| 74 path = file_enum.Next()) { | 74 path = file_enum.Next()) { |
| 75 std::string v4l_capabilities; | 75 std::string v4l_capabilities; |
| 76 if (chrome::GetUdevDevicePropertyValueByPath( | 76 if (GetUdevDevicePropertyValueByPath( |
| 77 path, kV4LCapabilities, &v4l_capabilities)) { | 77 path, kV4LCapabilities, &v4l_capabilities)) { |
| 78 std::vector<std::string> caps; | 78 std::vector<std::string> caps; |
| 79 base::SplitString(v4l_capabilities, kV4LCapabilitiesDelim, &caps); | 79 base::SplitString(v4l_capabilities, kV4LCapabilitiesDelim, &caps); |
| 80 if (find(caps.begin(), caps.end(), kV4LCaptureCapability) != caps.end()) { | 80 if (find(caps.begin(), caps.end(), kV4LCaptureCapability) != caps.end()) { |
| 81 return true; | 81 return true; |
| 82 } | 82 } |
| 83 } | 83 } |
| 84 } | 84 } |
| 85 return false; | 85 return false; |
| 86 } | 86 } |
| 87 | 87 |
| 88 } // namespace chromeos | 88 } // namespace chromeos |
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