/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
*************************************************************************
 * @file   M4AIR_API.h
 * @brief  Area of Interest Resizer  API
 * @note
*************************************************************************
*/
#ifndef M4AIR_API_H
#define M4AIR_API_H

/******************************* INCLUDES *******************************/
#include "M4OSA_Types.h"
#include "M4OSA_Error.h"
#include "M4OSA_CoreID.h"
#include "M4OSA_Mutex.h"
#include "M4OSA_Memory.h"
#include "M4VIFI_FiltersAPI.h"
#include "M4Common_types.h"

/************************ M4AIR TYPES DEFINITIONS ***********************/

/**
 ******************************************************************************
 * enum        M4AIR_InputFormatType
 * @brief     The following enumeration lists the different accepted format for the AIR.
 * To be available, the associated compilation flag must be defined, else,
 * the AIR will return an error (compilation flag : M4AIR_XXXXXX_FORMAT_SUPPORTED).
 ******************************************************************************
*/
typedef enum
{
    M4AIR_kYUV420P,
    M4AIR_kYUV420AP,
    M4AIR_kJPG
}M4AIR_InputFormatType ;


/**
 ******************************************************************************
 * struct         M4AIR_Coordinates
 * @brief     The following structure is used to retrieve X and Y coordinates in a given picture.
 ******************************************************************************
*/
typedef struct
{
    M4OSA_UInt32    m_x;    /**< X coordinate */
    M4OSA_UInt32    m_y;    /**< Y coordinate */
}M4AIR_Coordinates;


/**
 ******************************************************************************
 * struct         M4AIR_Size
 * @brief     The following structure is used to retrieve the dimension of a given picture area.
 ******************************************************************************
*/
typedef struct
{
    M4OSA_UInt32    m_width;    /**< Width */
    M4OSA_UInt32    m_height;    /**< Height */
}M4AIR_Size;


/**
 ******************************************************************************
 * struct         M4AIR_Params
 * @brief     The following structure is used to retrieve the parameters needed to get a resized ROI (Region of interest).
 ******************************************************************************
*/
typedef struct
{
    M4AIR_Coordinates        m_inputCoord;            /**< X and Y positionning in the input of the first interesting pixel (top-left) */
    M4AIR_Size                m_inputSize;            /**< Size of the interesting area inside input (width and height)*/
    M4AIR_Size                m_outputSize;            /**< Size of the output */
    M4OSA_Bool                m_bOutputStripe;            /**< Flag to know if we will have to provide output per stripe or not */
    M4COMMON_Orientation        m_outputOrientation;    /**< Desired orientation of the AIR output */
}M4AIR_Params;


/*********************** M4AIR ERRORS DEFINITIONS **********************/

/* This error means that the requested video format is not supported. */
#define M4ERR_AIR_FORMAT_NOT_SUPPORTED    M4OSA_ERR_CREATE(M4_ERR,M4AIR,0x000001)

/* This error means that the input or output size is incorrect */
#define M4ERR_AIR_ILLEGAL_FRAME_SIZE    M4OSA_ERR_CREATE(M4_ERR,M4AIR,0x000002)


/********************** M4AIR PUBLIC API DEFINITIONS ********************/
/**
 ******************************************************************************
 * M4OSA_ERR M4AIR_create(M4OSA_Context* pContext,M4AIR_InputFormatType inputFormat);
 * @brief        This function initialize an instance of the AIR.
 * @param    pContext:    (IN/OUT) Address of the context to create
 * @param    inputFormat:    (IN) input format type.
 * @return    M4NO_ERROR: there is no error
 * @return    M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only). Invalid formatType
 * @return    M4ERR_ALLOC: No more memory is available
 ******************************************************************************
*/
M4OSA_ERR M4AIR_create(M4OSA_Context* pContext,M4AIR_InputFormatType inputFormat);


/**
 ******************************************************************************
 * M4OSA_ERR M4AIR_cleanUp(M4OSA_Context pContext)
 * @brief        This function destroys an instance of the AIR component
 * @param    pContext:    (IN) Context identifying the instance to destroy
 * @return    M4NO_ERROR: there is no error
 * @return    M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
 * @return    M4ERR_STATE: Internal state is incompatible with this function call.
 ******************************************************************************
*/
M4OSA_ERR M4AIR_cleanUp(M4OSA_Context pContext);


/**
 ******************************************************************************
 * M4OSA_ERR M4AIR_configure(M4OSA_Context pContext, M4AIR_Params* pParams)
 * @brief    This function will configure the AIR.
 * @note    It will set the input and output coordinates and sizes,
 *            and indicates if we will proceed in stripe or not.
 *            In case a M4AIR_get in stripe mode was on going, it will cancel this previous
 *            processing and reset the get process.
 * @param    pContext:                (IN) Context identifying the instance
 * @param    pParams->m_bOutputStripe:(IN) Stripe mode.
 * @param    pParams->m_inputCoord:    (IN) X,Y coordinates of the first valid pixel in input.
 * @param    pParams->m_inputSize:    (IN) input ROI size.
 * @param    pParams->m_outputSize:    (IN) output size.
 * @return    M4NO_ERROR: there is no error
 * @return    M4ERR_ALLOC: No more memory space to add a new effect.
 * @return    M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
 * @return    M4ERR_AIR_FORMAT_NOT_SUPPORTED: the requested input format is not supported.
 ******************************************************************************
*/
M4OSA_ERR M4AIR_configure(M4OSA_Context pContext, M4AIR_Params* pParams);


/**
 ******************************************************************************
 * M4OSA_ERR M4AIR_get(M4OSA_Context pContext, M4VIFI_ImagePlane* pIn, M4VIFI_ImagePlane* pOut)
 * @brief    This function will provide the requested resized area of interest according to
 *            settings provided in M4AIR_configure.
 * @note    In case the input format type is JPEG, input plane(s)
 *            in pIn is not used. In normal mode, dimension specified in output plane(s) structure
 *            must be the same than the one specified in M4AIR_configure. In stripe mode, only
 *            the width will be the same, height will be taken as the stripe height (typically 16).
 *            In normal mode, this function is call once to get the full output picture. In stripe
 *            mode, it is called for each stripe till the whole picture has been retrieved,and
 *            the position of the output stripe in the output picture is internally incremented
 *            at each step.
 *            Any call to M4AIR_configure during stripe process will reset this one to the
 *              beginning of the output picture.
 * @param    pContext:    (IN) Context identifying the instance
 * @param    pIn:            (IN) Plane structure containing input Plane(s).
 * @param    pOut:        (IN/OUT)  Plane structure containing output Plane(s).
 * @return    M4NO_ERROR: there is no error
 * @return    M4ERR_ALLOC: No more memory space to add a new effect.
 * @return    M4ERR_PARAMETER: pContext is M4OSA_NULL (debug only).
 ******************************************************************************
*/
M4OSA_ERR M4AIR_get(M4OSA_Context pContext, M4VIFI_ImagePlane* pIn, M4VIFI_ImagePlane* pOut);


#endif /* M4AIR_API_H */