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//
// SDLStreamingDataManager.h
// SmartDeviceLink-iOS
//
// Created by Joel Fischer on 8/11/15.
// Copyright (c) 2015 smartdevicelink. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <VideoToolbox/VideoToolbox.h>
#import "SDLStreamingMediaManagerConstants.h"
@class SDLAbstractProtocol;
@class SDLStreamingMediaConfiguration;
@class SDLTouchManager;
@class SDLVideoStreamingFormat;
@protocol SDLFocusableItemLocatorType;
@protocol SDLConnectionManagerType;
NS_ASSUME_NONNULL_BEGIN
#pragma mark - Interface
@interface SDLStreamingMediaManager : NSObject
/**
* Touch Manager responsible for providing touch event notifications.
*/
@property (nonatomic, strong, readonly) SDLTouchManager *touchManager;
/**
A haptic interface that can be updated to reparse views within the window you've provided. Send a `SDLDidUpdateProjectionView` notification or call the `updateInterfaceLayout` method to reparse. The "output" of this haptic interface occurs in the `touchManager` property where it will call the delegate.
*/
@property (nonatomic, strong, readonly, nullable) id<SDLFocusableItemLocatorType> focusableItemManager;
/**
* Whether or not video streaming is supported
*
* @see SDLRegisterAppInterface SDLDisplayCapabilities
*/
@property (assign, nonatomic, readonly, getter=isStreamingSupported) BOOL streamingSupported;
/**
* Whether or not the video session is connected.
*/
@property (assign, nonatomic, readonly, getter=isVideoConnected) BOOL videoConnected;
/**
* Whether or not the video session is encrypted. This may be different than the requestedEncryptionType.
*/
@property (assign, nonatomic, readonly, getter=isVideoEncrypted) BOOL videoEncrypted;
/**
* Whether or not the audio session is connected.
*/
@property (assign, nonatomic, readonly, getter=isAudioConnected) BOOL audioConnected;
/**
* Whether or not the audio session is encrypted. This may be different than the requestedEncryptionType.
*/
@property (assign, nonatomic, readonly, getter=isAudioEncrypted) BOOL audioEncrypted;
/**
* Whether or not the video stream is paused due to either the application being backgrounded, the HMI state being either NONE or BACKGROUND, or the video stream not being ready.
*/
@property (assign, nonatomic, readonly, getter=isVideoStreamingPaused) BOOL videoStreamingPaused;
/**
* This is the current screen size of a connected display. This will be the size the video encoder uses to encode the raw image data.
*/
@property (assign, nonatomic, readonly) CGSize screenSize;
/**
This is the agreed upon format of video encoder that is in use, or nil if not currently connected.
*/
@property (strong, nonatomic, readonly, nullable) SDLVideoStreamingFormat *videoFormat;
/**
A list of all supported video formats by this manager
*/
@property (strong, nonatomic, readonly) NSArray<SDLVideoStreamingFormat *> *supportedFormats;
/**
* The pixel buffer pool reference returned back from an active VTCompressionSessionRef encoder.
*
* @warning This will only return a valid pixel buffer pool after the encoder has been initialized (when the video session has started).
* @discussion Clients may call this once and retain the resulting pool, this call is cheap enough that it's OK to call it once per frame.
*/
@property (assign, nonatomic, readonly, nullable) CVPixelBufferPoolRef pixelBufferPool;
/**
* The requested encryption type when a session attempts to connect. This setting applies to both video and audio sessions.
*
* DEFAULT: SDLStreamingEncryptionFlagAuthenticateAndEncrypt
*/
@property (assign, nonatomic) SDLStreamingEncryptionFlag requestedEncryptionType;
- (instancetype)init NS_UNAVAILABLE;
/**
Create a new streaming media manager for navigation and VPM apps with a specified configuration
@param connectionManager The pass-through for RPCs
@param configuration The configuration of this streaming media session
@return A new streaming manager
*/
- (instancetype)initWithConnectionManager:(id<SDLConnectionManagerType>)connectionManager configuration:(SDLStreamingMediaConfiguration *)configuration NS_DESIGNATED_INITIALIZER;
/**
* Start the manager with a completion block that will be called when startup completes. This is used internally. To use an SDLStreamingMediaManager, you should use the manager found on `SDLManager`.
*/
- (void)startWithProtocol:(SDLAbstractProtocol *)protocol;
/**
* Stop the manager. This method is used internally.
*/
- (void)stop;
/**
* This method receives raw image data and will run iOS8+'s hardware video encoder to turn the data into a video stream, which will then be passed to the connected head unit.
*
* @param imageBuffer A CVImageBufferRef to be encoded by Video Toolbox
*
* @return Whether or not the data was successfully encoded and sent.
*/
- (BOOL)sendVideoData:(CVImageBufferRef)imageBuffer;
/**
* This method receives raw image data and will run iOS8+'s hardware video encoder to turn the data into a video stream, which will then be passed to the connected head unit.
*
* @param imageBuffer A CVImageBufferRef to be encoded by Video Toolbox
* @param presentationTimestamp A presentation timestamp for the frame, or kCMTimeInvalid if timestamp is unknown. If it's valid, it must be greater than the previous one.
*
* @return Whether or not the data was successfully encoded and sent.
*/
- (BOOL)sendVideoData:(CVImageBufferRef)imageBuffer presentationTimestamp:(CMTime)presentationTimestamp;
/**
* This method receives PCM audio data and will attempt to send that data across to the head unit for immediate playback
*
* @param audioData The data in PCM audio format, to be played
*
* @return Whether or not the data was successfully sent.
*/
- (BOOL)sendAudioData:(NSData *)audioData;
@end
NS_ASSUME_NONNULL_END
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