1 files changed, 71 insertions, 0 deletions
diff --git a/dom/media/systemservices/objc_video_capture/device_info_avfoundation.h b/dom/media/systemservices/objc_video_capture/device_info_avfoundation.h
new file mode 100644
index 0000000000..9a698480fa
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+++ b/dom/media/systemservices/objc_video_capture/device_info_avfoundation.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_DEVICE_INFO_AVFOUNDATION_H_
+#define DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_DEVICE_INFO_AVFOUNDATION_H_
+
+#include <map>
+#include <string>
+
+#include "api/sequence_checker.h"
+#include "device_info_objc.h"
+#include "modules/video_capture/device_info_impl.h"
+
+namespace webrtc::videocapturemodule {
+
+/**
+ * DeviceInfo implementation for the libwebrtc ios/mac sdk camera backend.
+ * Single threaded except for DeviceChange() that happens on a platform callback
+ * thread.
+ */
+class DeviceInfoAvFoundation : public DeviceInfoImpl {
+ public:
+  static int32_t ConvertAVFrameRateToCapabilityFPS(Float64 aRate);
+  static webrtc::VideoType ConvertFourCCToVideoType(FourCharCode aCode);
+
+  DeviceInfoAvFoundation();
+  virtual ~DeviceInfoAvFoundation();
+
+  // Implementation of DeviceInfoImpl.
+  int32_t Init() override { return 0; }
+  void DeviceChange() override;
+  uint32_t NumberOfDevices() override;
+  int32_t GetDeviceName(uint32_t aDeviceNumber, char* aDeviceNameUTF8,
+                        uint32_t aDeviceNameLength, char* aDeviceUniqueIdUTF8,
+                        uint32_t aDeviceUniqueIdUTF8Length,
+                        char* aProductUniqueIdUTF8 = nullptr,
+                        uint32_t aProductUniqueIdUTF8Length = 0,
+                        pid_t* aPid = nullptr) override;
+  int32_t NumberOfCapabilities(const char* aDeviceUniqueIdUTF8) override;
+  int32_t GetCapability(const char* aDeviceUniqueIdUTF8,
+                        const uint32_t aDeviceCapabilityNumber,
+                        VideoCaptureCapability& aCapability) override;
+  int32_t DisplayCaptureSettingsDialogBox(const char* aDeviceUniqueIdUTF8,
+                                          const char* aDialogTitleUTF8,
+                                          void* aParentWindow,
+                                          uint32_t aPositionX,
+                                          uint32_t aPositionY) override {
+    return -1;
+  }
+  int32_t CreateCapabilityMap(const char* aDeviceUniqueIdUTF8) override
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock);
+
+ private:
+  const std::tuple<std::string, std::string, VideoCaptureCapabilities>*
+  FindDeviceAndCapabilities(const std::string& aDeviceUniqueId) const;
+  void EnsureCapabilitiesMap();
+
+  SequenceChecker mChecker;
+  std::atomic<bool> mInvalidateCapabilities;
+  // [{uniqueId, name, capabilities}]
+  std::vector<std::tuple<std::string, std::string, VideoCaptureCapabilities>>
+      mDevicesAndCapabilities RTC_GUARDED_BY(mChecker);
+  const DeviceInfoIosObjC* mDeviceChangeCaptureInfo RTC_GUARDED_BY(mChecker);
+};
+
+}  // namespace webrtc::videocapturemodule
+
+#endif