/*

    File: DataProvider.h

Abstract: Implementation of the custom CGDataProvider

 Version: 1.1

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*/

#include <ApplicationServices/ApplicationServices.h>

// Some constants that describe the type of image that this data provider provides.

#define kNumComponents 4

#define kBitsPerComponent 8

#define kBitsPerPixel (kNumComponents * kBitsPerComponent)

#define kBytesPerPixel (kBitsPerPixel / 8)

#define kImageFlags kCGImageAlphaNoneSkipFirst

// Callback for our custom data provider in order to provide progress for UI.

typedef void (*DataProviderProgressCallback)(void *context, float percentProgress);

// Callback for our custom data provider to determine if we should stop providing data in order to implement cancel

typedef bool (*DataProviderCancelCallback)(void *context);

// Create a custom data provider with optional progress & cancel callbacks.

CGDataProviderRef CreateDataProvider(size_t width, size_t height, void * context, DataProviderProgressCallback progressCallback, DataProviderCancelCallback cancelCallback);