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67 lines
2.1 KiB
Objective-C
67 lines
2.1 KiB
Objective-C
//
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// GCGamepadSnapshot.h
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// GameController
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//
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// Copyright (c) 2012 Apple Inc. All rights reserved.
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//
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#import "GameController.h"
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/**
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A GCGamepadSnapshot snapshot is a concrete GCGamepad implementation. It can be used directly in an
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application to implement controller input replays. It is also returned as the result of polling
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a controller.
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The current snapshotData is readily available to access as NSData. A developer can serialize this to any
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destination necessary using the NSData API.
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The data contains some version of a GCGamepadSnapShotData structure.
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@see -[GCGamepad saveSnapshot]
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*/
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GAMECONTROLLER_EXPORT
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@interface GCGamepadSnapshot : GCGamepad
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@property (copy) NSData *snapshotData;
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- (instancetype)initWithSnapshotData:(NSData *)data;
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- (instancetype)initWithController:(GCController *)controller snapshotData:(NSData *)data;
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@end
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#pragma pack(push, 1)
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typedef struct {
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// Standard information
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uint16_t version; //0x0100
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uint16_t size; //sizeof(GCGamepadSnapShotDataV100) or larger
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// Standard gamepad data
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// Axes in the range [-1.0, 1.0]
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float_t dpadX;
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float_t dpadY;
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// Buttons in the range [0.0, 1.0]
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float_t buttonA;
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float_t buttonB;
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float_t buttonX;
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float_t buttonY;
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float_t leftShoulder;
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float_t rightShoulder;
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} GCGamepadSnapShotDataV100;
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#pragma pack(pop)
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/**Fills out a v100 snapshot from any compatible NSData source
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@return NO if data is nil, snapshotData is nil or the contents of data does not contain a compatible snapshot. YES for all other cases.
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*/
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GAMECONTROLLER_EXPORT
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BOOL GCGamepadSnapShotDataV100FromNSData(GCGamepadSnapShotDataV100 *snapshotData, NSData *data);
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/**Creates an NSData object from a v100 snapshot.
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If the version and size is not set in the snapshot the data will automatically have version 0x100 and sizeof(GCGamepadSnapShotDataV100) set as the values implicitly.
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@return nil if the snapshot is NULL, otherwise an NSData instance compatible with GCGamepadSnapshot.snapshotData
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*/
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GAMECONTROLLER_EXPORT
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NSData *NSDataFromGCGamepadSnapShotDataV100(GCGamepadSnapShotDataV100 *snapshotData);
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