/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: Dynamic Management Interface Implementation

 *

 */

#include <stdlib.h>

#include <assert.h>

#include "openmaxalwrapper.h"

#include "xadynintmgmtitf.h"

#include "xadebug.h"

/* XADIMItfImpl* GetImpl(XADIMItf self)

 * Description: Validate interface pointer and cast it to implementation pointer.

 */

static XADIMItfImpl* GetImpl(XADynamicInterfaceManagementItf self)

    {

    if (self)

        {

        XADIMItfImpl* impl = (XADIMItfImpl*) (*self);

        if (impl && (impl == impl->self))

            {

            return impl;

            }

        }

    return NULL;

    }

/**

 * Base Interface XADynamicInterfaceManagementItf implementation

 **/

/* XAresult XADIMItfImpl_AddInterface

 * Optionally asynchronous method for exposing an interface on an object.

 */

XAresult XADIMItfImpl_AddInterface(XADynamicInterfaceManagementItf self,

        const XAInterfaceID iid, XAboolean async)

    {

    XADIMItfImpl* impl = GetImpl(self);

    XAresult retval = XA_RESULT_SUCCESS;

    DEBUG_API("->XADIMItfImpl_AddInterface");

    if (!impl)

        {

        return XA_RESULT_PARAMETER_INVALID;

        }

    if (async)

        {

        /* invoke asynchronously */

        /* check if another async operation is processed */

        if (impl->asyncOngoing)

            {

            /* abort ongoing operation */

            XAImpl_CancelThread(impl->asyncThr);

            }

        impl->asyncOngoing = XA_BOOLEAN_TRUE;

        impl->asyncID = iid;

        if (XAImpl_StartThread(impl->asyncThr, NULL,

                &XADIMItfImpl_AsyncAddItf, (void*) (self)))

            {

            impl->asyncOngoing = XA_BOOLEAN_FALSE;

            retval = XA_RESULT_RESOURCE_ERROR;

            }

        else

            {

            retval = XA_RESULT_SUCCESS;

            }

        }

    else

        {

        /* invoke synchronously */

        retval = XADIMItfImpl_DoAddItf(impl, iid);

        }

    DEBUG_API_A1("<-XADIMItfImpl_AddInterface %lu", retval);

    return retval;

    }

/* XAresult XADIMItfImpl_RemoveInterface

 * Synchronous method for removing a dynamically exposed interface on an object.

 */

XAresult XADIMItfImpl_RemoveInterface(XADynamicInterfaceManagementItf self,

        const XAInterfaceID iid)

    {

    XADIMItfImpl* impl = GetImpl(self);

    XAresult retval = XA_RESULT_SUCCESS;

    DEBUG_API("->XADIMItfImpl_RemoveInterface");

    if (impl)

        {

        XAObjItfMapEntry *mapEntry = NULL;

        if (impl->parent)

            {

            mapEntry = XAObjectItfImpl_GetItfEntry(impl->parent, iid);

            }

        if (mapEntry && mapEntry->isDynamic)

            {

            if ((mapEntry->pItf))

                {

                if (impl->DoRemoveItfImpl)

                    {

                    retval = impl->DoRemoveItfImpl(impl->parent, mapEntry);

                    }

                else

                    {

                    DEBUG_ERR("XADIMItfImpl_RemoveInterface: Object has specified dynamic itfs but not implemented DoRemoveItfImpl!!!");

                    retval = XA_RESULT_INTERNAL_ERROR;

                    }

                }

            else

                {

                DEBUG_ERR("XADIMItfImpl_RemoveInterface interface not exposed");

                retval = XA_RESULT_PRECONDITIONS_VIOLATED;

                }

            }

        else /*( mapEntry && mapEntry->isDynamic )*/

            { /* interface is not supported for dynamic management */

            DEBUG_ERR("XADIMItfImpl_RemoveInterface interface not supported");

            retval = XA_RESULT_FEATURE_UNSUPPORTED;

            }

        }

    else

        {

        retval = XA_RESULT_PARAMETER_INVALID;

        DEBUG_ERR("XADIMItfImpl_RemoveInterface: INVALID args");

        }

    DEBUG_API_A1("<-XADIMItfImpl_RemoveInterface %lu", retval);

    return retval;

    }

/* XAresult XADIMItfImpl_ResumeInterface

 * Optionally asynchronous method for resuming a dynamically exposed interface on the object.

 */

XAresult XADIMItfImpl_ResumeInterface(XADynamicInterfaceManagementItf self,

        const XAInterfaceID iid, XAboolean async)

    {

    XADIMItfImpl* impl = GetImpl(self);

    XAresult retval = XA_RESULT_SUCCESS;

    DEBUG_API("->XADIMItfImpl_ResumeInterface");

    if (!impl)

        {

        return XA_RESULT_PARAMETER_INVALID;

        }

    if (async)

        {

        /* invoke asynchronously */

        /* check if another async operation is processed */

        if (impl->asyncOngoing)

            {

            /* abort ongoing operation */

            XAImpl_CancelThread(impl->asyncThr);

            }

        impl->asyncOngoing = XA_BOOLEAN_TRUE;

        impl->asyncID = iid;

        if (XAImpl_StartThread(impl->asyncThr, NULL,

                &XADIMItfImpl_AsyncResumeItf, (void*) (self)))

            {

            impl->asyncOngoing = XA_BOOLEAN_FALSE;

            retval = XA_RESULT_RESOURCE_ERROR;

            }

        else

            {

            retval = XA_RESULT_SUCCESS;

            }

        }

    else

        {

        /* invoke synchronously */

        retval = XADIMItfImpl_DoResumeItf(impl, iid);

        }

    DEBUG_API_A1("<-XADIMItfImpl_ResumeInterface %lu", retval);

    return retval;

    }

/* XAresult XADIMItfImpl_RegisterCallback

 * Registers a callback on the object

 */

XAresult XADIMItfImpl_RegisterCallback(XADynamicInterfaceManagementItf self,

        xaDynamicInterfaceManagementCallback callback, void * pContext)

    {

    XADIMItfImpl* impl = GetImpl(self);

    DEBUG_API("->XADIMItfImpl_RegisterCallback");

    if (!impl)

        {

        return XA_RESULT_PARAMETER_INVALID;

        }

    impl->dimCb = callback;

    impl->dimCbContext = pContext;

    impl->dimCbPtrToSelf = self;

    DEBUG_API("<-XADIMItfImpl_RegisterCallback");

    return XA_RESULT_SUCCESS;

    }

/**

 * XADIMItfImpl -specific methods

 **/

/* XADIMItfImpl* XADIMItfImpl_Create()

 * Description: Allocate and initialize DIMItfImpl

 */

XADIMItfImpl* XADIMItfImpl_Create()

    {

    XADIMItfImpl *self = (XADIMItfImpl*) calloc(1, sizeof(XADIMItfImpl));

    DEBUG_API("->XADIMItfImpl_Create");

    if (self)

        {

        /* init itf default implementation */

        self->itf.AddInterface = XADIMItfImpl_AddInterface;

        self->itf.RemoveInterface = XADIMItfImpl_RemoveInterface;

        self->itf.ResumeInterface = XADIMItfImpl_ResumeInterface;

        self->itf.RegisterCallback = XADIMItfImpl_RegisterCallback;

        /* init variables */

        self->asyncOngoing = XA_BOOLEAN_FALSE;

        self->dimCbPtrToSelf = NULL;

        self->self = self;

        if (XAImpl_CreateThreadHandle(&(self->asyncThr)) != XA_RESULT_SUCCESS)

            {

            free(self);

            self = NULL;

            }

    return self;

    }

/* void XADIMItfImpl_Free(XADIMItfImpl* self)

 * Description: Free all resources reserved at XADIMItfImpl_Create

 */

void XADIMItfImpl_Free(XADIMItfImpl* self)

    {

    DEBUG_API("->XADIMItfImpl_Free");

    assert(self==self->self);

    XAImpl_DeleteThreadHandle(self->asyncThr);

    free(self);

    DEBUG_API("<-XADIMItfImpl_Free");

    }

/* void XADIMItfImpl_Init

 * Description: Initialize DIM interface. Mandatory to call if dynamic

 * interfaces are supported by object.

 */

void XADIMItfImpl_Init(XADIMItfImpl* self, XAObjectItf parent,

        xaDoAddItfImpl doAdd, xaDoResumeItfImpl doResume,

        xaDoRemoveItfImpl doRemove)

    {

    DEBUG_API("->XADIMItfImpl_Init");

    assert(self==self->self && parent && doAdd && doResume && doRemove);

    self->parent = parent;

    self->DoAddItfImpl = doAdd;

    self->DoResumeItfImpl = doResume;

    self->DoRemoveItfImpl = doRemove;

    DEBUG_API("<-XADIMItfImpl_Init");

    }

/* void XADIMItfImpl_SendCbEvent

 * Description: Object can use this method to send resource events

 */

void XADIMItfImpl_SendCbEvent(XADIMItfImpl* self, XAuint32 event,

        XAresult result, const XAInterfaceID iid)

    {

    DEBUG_API("->XADIMItfImpl_SendCbEvent");

    if (self->dimCb)

        {

        self->dimCb((XADynamicInterfaceManagementItf) (self),

                self->dimCbContext, event, result, iid);

    }

/* void* XADIMItfImpl_AsyncAddItf

 * Description: Launch AddItf from async thread.

 */

void* XADIMItfImpl_AsyncAddItf(void* args)

    {

    XAresult retval = XA_RESULT_SUCCESS;

    XADIMItfImpl* impl = GetImpl(args);

    DEBUG_API("->XADIMItfImpl_AsyncAddItf");

    if (impl)

        {

        retval = XADIMItfImpl_DoAddItf(impl, impl->asyncID);

        if (impl->dimCb)

            {

            impl->dimCb((XADynamicInterfaceManagementItf) (args),

                    impl->dimCbContext,

                    XA_DYNAMIC_ITF_EVENT_ASYNC_TERMINATION, retval,

                    impl->asyncID);

            }

        impl->asyncOngoing = XA_BOOLEAN_FALSE;

        XAImpl_ExitThread(impl->asyncThr);

        }

    else

        {

        DEBUG_ERR("XADIMItfImpl_AsyncAddItf: INVALID args");

        }

    DEBUG_API("<-XADIMItfImpl_AsyncAddItf");

    return NULL;

    }

/* XAresult XADIMItfImpl_DoAddItf

 * Description: Handle Itf dynamic addition and call object-specific parts.

 *              Launched either from async thread or directly.

 */

XAresult XADIMItfImpl_DoAddItf(XADIMItfImpl* impl, const XAInterfaceID iid)

    {

    XAresult retval = XA_RESULT_SUCCESS;

    DEBUG_API("->XADIMItfImpl_DoAddItf");

    if (impl)

        {

        XAObjItfMapEntry *mapEntry = NULL;

        if (impl->parent)

            {

            mapEntry = XAObjectItfImpl_GetItfEntry(impl->parent, iid);

            }

        if (mapEntry && mapEntry->isDynamic)

            {

            if (!(mapEntry->pItf))

                {

                if (impl->DoAddItfImpl)

                    {

                    retval = impl->DoAddItfImpl(impl->parent, mapEntry);

                    }

                else

                    {

                    DEBUG_ERR("XADIMItfImpl_DoAddItf: Object has specified dynamic itfs but not implemented DoAddItfImpl!!!");

                    retval = XA_RESULT_INTERNAL_ERROR;

                    }

                }

            else

                {

                DEBUG_ERR("XADIMItfImpl_DoAddItf interface already exposed");

                retval = XA_RESULT_PRECONDITIONS_VIOLATED;

                }

            }

        else /*( mapEntry && mapEntry->isDynamic )*/

            { /* interface is not supported for dynamic management */

            DEBUG_ERR("XADIMItfImpl_DoAddItf interface not supported");

            retval = XA_RESULT_FEATURE_UNSUPPORTED;

            }

        }

    else

        {

        retval = XA_RESULT_INTERNAL_ERROR;

        DEBUG_ERR("XADIMItfImpl_DoAddItf: INVALID args");

        }

    DEBUG_API("<-XADIMItfImpl_DoAddItf");

    return retval;

    }

/* void* XADIMItfImpl_AsyncResumeItf

 * Description: Launch ResumeItf from async thread.

 */

void* XADIMItfImpl_AsyncResumeItf(void* args)

    {

    XAresult retval = XA_RESULT_SUCCESS;

    XADIMItfImpl* impl = GetImpl(args);

    DEBUG_API("->XADIMItfImpl_AsyncResumeItf");

    if (impl)

        {

        retval = XADIMItfImpl_DoResumeItf(impl, impl->asyncID);

        if (impl->dimCb)

            {

            impl->dimCb((XADynamicInterfaceManagementItf) (args),

                    impl->dimCbContext,

                    XA_DYNAMIC_ITF_EVENT_ASYNC_TERMINATION, retval,

                    impl->asyncID);

            }

        impl->asyncOngoing = XA_BOOLEAN_FALSE;

        XAImpl_ExitThread(impl->asyncThr);

        }

    else

        {

        DEBUG_ERR("XADIMItfImpl_AsyncResumeItf: INVALID args");

        }

    DEBUG_API("<-XADIMItfImpl_AsyncResumeItf");

    return NULL;

    }

/* void XADIMItfImpl_DoResumeItf

 * Description: Handle Itf dynamic resuming and call object-specific parts.

 *              Launched either from async thread or directly.

 */

XAresult XADIMItfImpl_DoResumeItf(XADIMItfImpl* impl, const XAInterfaceID iid)

    {

    XAresult retval = XA_RESULT_SUCCESS;

    DEBUG_API("->XADIMItfImpl_DoResumeItf");

    if (impl)

        {

        XAObjItfMapEntry *mapEntry = XAObjectItfImpl_GetItfEntry(

                impl->parent, iid);

        if (mapEntry && mapEntry->isDynamic)

            {

            if ((!mapEntry->pItf))

                {

                if (impl->DoResumeItfImpl)

                    {

                    retval = impl->DoResumeItfImpl(impl->parent, mapEntry);

                    }

                else

                    {

                    DEBUG_ERR("XADIMItfImpl_DoResumeItf: Object has specified dynamic itfs but not implemented DoResumeItfImpl!!!");

                    retval = XA_RESULT_INTERNAL_ERROR;

                    }

                }

            else

                {

                DEBUG_ERR("XADIMItfImpl_DoResumeItf interface already exposed");

                retval = XA_RESULT_PRECONDITIONS_VIOLATED;

                }

            }

        else /*( mapEntry && mapEntry->isDynamic )*/

            { /* interface is not supported for dynamic management */

            DEBUG_ERR("XADIMItfImpl_DoResumeItf interface not supported");

            retval = XA_RESULT_FEATURE_UNSUPPORTED;

            }

        }

    else

        {

        retval = XA_RESULT_INTERNAL_ERROR;

        DEBUG_ERR("XADIMItfImpl_DoResumeItf: INVALID args");

        }

    DEBUG_API("<-XADIMItfImpl_DoResumeItf");

    return retval;

    }