116 lines
4.5 KiB
C++
116 lines
4.5 KiB
C++
/*
|
|
* 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/video_capture_defines.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class VideoCaptureModule : public rtc::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,
|
|
const 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;
|
|
|
|
// 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_
|