Repo created

TMessagesProj/jni/voip/webrtc/modules/video_capture/video_capture.h

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+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_VIDEO_CAPTURE_VIDEO_CAPTURE_H_
+#define MODULES_VIDEO_CAPTURE_VIDEO_CAPTURE_H_
+
+#include "api/video/video_rotation.h"
+#include "api/video/video_sink_interface.h"
+#include "modules/video_capture/raw_video_sink_interface.h"
+#include "modules/video_capture/video_capture_defines.h"
+
+namespace webrtc {
+
+class VideoCaptureModule : public RefCountInterface {
+ public:
+  // Interface for receiving information about available camera devices.
+  class DeviceInfo {
+   public:
+    virtual uint32_t NumberOfDevices() = 0;
+
+    // Returns the available capture devices.
+    // deviceNumber   - Index of capture device.
+    // deviceNameUTF8 - Friendly name of the capture device.
+    // deviceUniqueIdUTF8 - Unique name of the capture device if it exist.
+    //                      Otherwise same as deviceNameUTF8.
+    // productUniqueIdUTF8 - Unique product id if it exist.
+    //                       Null terminated otherwise.
+    virtual int32_t GetDeviceName(uint32_t deviceNumber,
+                                  char* deviceNameUTF8,
+                                  uint32_t deviceNameLength,
+                                  char* deviceUniqueIdUTF8,
+                                  uint32_t deviceUniqueIdUTF8Length,
+                                  char* productUniqueIdUTF8 = 0,
+                                  uint32_t productUniqueIdUTF8Length = 0) = 0;
+
+    // Returns the number of capabilities this device.
+    virtual int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8) = 0;
+
+    // Gets the capabilities of the named device.
+    virtual int32_t GetCapability(const char* deviceUniqueIdUTF8,
+                                  uint32_t deviceCapabilityNumber,
+                                  VideoCaptureCapability& capability) = 0;
+
+    // Gets clockwise angle the captured frames should be rotated in order
+    // to be displayed correctly on a normally rotated display.
+    virtual int32_t GetOrientation(const char* deviceUniqueIdUTF8,
+                                   VideoRotation& orientation) = 0;
+
+    // Gets the capability that best matches the requested width, height and
+    // frame rate.
+    // Returns the deviceCapabilityNumber on success.
+    virtual int32_t GetBestMatchedCapability(
+        const char* deviceUniqueIdUTF8,
+        const VideoCaptureCapability& requested,
+        VideoCaptureCapability& resulting) = 0;
+
+    // Display OS /capture device specific settings dialog
+    virtual int32_t DisplayCaptureSettingsDialogBox(
+        const char* deviceUniqueIdUTF8,
+        const char* dialogTitleUTF8,
+        void* parentWindow,
+        uint32_t positionX,
+        uint32_t positionY) = 0;
+
+    virtual ~DeviceInfo() {}
+  };
+
+  //   Register capture data callback
+  virtual void RegisterCaptureDataCallback(
+      rtc::VideoSinkInterface<VideoFrame>* dataCallback) = 0;
+  virtual void RegisterCaptureDataCallback(
+      RawVideoSinkInterface* dataCallback) = 0;
+
+  //  Remove capture data callback
+  virtual void DeRegisterCaptureDataCallback() = 0;
+
+  // Start capture device
+  virtual int32_t StartCapture(const VideoCaptureCapability& capability) = 0;
+
+  virtual int32_t StopCapture() = 0;
+
+  // Returns the name of the device used by this module.
+  virtual const char* CurrentDeviceName() const = 0;
+
+  // Returns true if the capture device is running
+  virtual bool CaptureStarted() = 0;
+
+  // Gets the current configuration.
+  virtual int32_t CaptureSettings(VideoCaptureCapability& settings) = 0;
+
+  // Set the rotation of the captured frames.
+  // If the rotation is set to the same as returned by
+  // DeviceInfo::GetOrientation the captured frames are
+  // displayed correctly if rendered.
+  virtual int32_t SetCaptureRotation(VideoRotation rotation) = 0;
+
+  // Tells the capture module whether to apply the pending rotation. By default,
+  // the rotation is applied and the generated frame is up right. When set to
+  // false, generated frames will carry the rotation information from
+  // SetCaptureRotation. Return value indicates whether this operation succeeds.
+  virtual bool SetApplyRotation(bool enable) = 0;
+
+  // Return whether the rotation is applied or left pending.
+  virtual bool GetApplyRotation() = 0;
+
+ protected:
+  ~VideoCaptureModule() override {}
+};
+
+}  // namespace webrtc
+#endif  // MODULES_VIDEO_CAPTURE_VIDEO_CAPTURE_H_