// This file is part of the FidelityFX SDK.
//
// Copyright (C) 2024 Advanced Micro Devices, Inc.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files(the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and /or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// THE SOFTWARE.

#pragma once

#include <FidelityFX/host/ffx_types.h>

/// @defgroup Errors Error Codes
/// Error codes returned from FidelityFX SDK functions
/// 
/// @ingroup ffxHost

/// Typedef for error codes returned from functions in the FidelityFX SDK.
///
/// @ingroup Errors
typedef int32_t FfxErrorCode;

/// Error codes and their meaning
///
/// @ingroup Errors
typedef enum FfxErrorCodes {

    FFX_OK                            = 0,           ///< The operation completed successfully.
    FFX_ERROR_INVALID_POINTER         = 0x80000000,  ///< The operation failed due to an invalid pointer.
    FFX_ERROR_INVALID_ALIGNMENT       = 0x80000001,  ///< The operation failed due to an invalid alignment.
    FFX_ERROR_INVALID_SIZE            = 0x80000002,  ///< The operation failed due to an invalid size.
    FFX_EOF                           = 0x80000003,  ///< The end of the file was encountered.
    FFX_ERROR_INVALID_PATH            = 0x80000004,  ///< The operation failed because the specified path was invalid.
    FFX_ERROR_EOF                     = 0x80000005,  ///< The operation failed because end of file was reached.
    FFX_ERROR_MALFORMED_DATA          = 0x80000006,  ///< The operation failed because of some malformed data.
    FFX_ERROR_OUT_OF_MEMORY           = 0x80000007,  ///< The operation failed because it ran out memory.
    FFX_ERROR_INCOMPLETE_INTERFACE    = 0x80000008,  ///< The operation failed because the interface was not fully configured.
    FFX_ERROR_INVALID_ENUM            = 0x80000009,  ///< The operation failed because of an invalid enumeration value.
    FFX_ERROR_INVALID_ARGUMENT        = 0x8000000a,  ///< The operation failed because an argument was invalid.
    FFX_ERROR_OUT_OF_RANGE            = 0x8000000b,  ///< The operation failed because a value was out of range.
    FFX_ERROR_NULL_DEVICE             = 0x8000000c,  ///< The operation failed because a device was null.
    FFX_ERROR_BACKEND_API_ERROR       = 0x8000000d,  ///< The operation failed because the backend API returned an error code.
    FFX_ERROR_INSUFFICIENT_MEMORY     = 0x8000000e,  ///< The operation failed because there was not enough memory.
    FFX_ERROR_INVALID_VERSION         = 0x8000000f,  ///< The operation failed because the wrong backend was linked.
    FFX_ERROR_ACCESS_DENIED           = 0x80000010,  ///< The operation failed because access to the resource was denied.

}FfxErrorCodes;

/// Helper macro to return error code y from a function when a specific condition, x, is not met.
///
/// @ingroup Errors
#define FFX_RETURN_ON_ERROR(x, y)                   \
    if (!(x))                                       \
    {                                               \
        return (y);                                 \
    }

/// Helper macro to return error code x from a function when it is not FFX_OK.
///
/// @ingroup Errors
#define FFX_VALIDATE(x)                             \
    {                                               \
        FfxErrorCode ret = x;                       \
        FFX_RETURN_ON_ERROR(ret == FFX_OK, ret);    \
    }