/*

 * 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: Record Itf GST adaptation

 *

 */

#include <pthread.h>

#include <gst/gst.h>

#include "xamediarecorderadaptctx.h"

#include "xarecorditfadaptation.h"

#include "xaadaptationgst.h"

/*forward declaration of position updater callback*/

gboolean XARecordItfAdapt_PositionUpdate(gpointer ctx);

/*

 * XAresult XARecordItfAdapt_SetRecordState(XAAdaptationGstCtx *ctx, XAuint32 state)

 * Sets record state to GStreamer.

 * @param XAAdaptationGstCtx *ctx - Adaptation context

 * XAuint32 state - Record state to be set

 * @return XAresult ret - Success value

 */

XAresult XARecordItfAdapt_SetRecordState(XAAdaptationGstCtx *bCtx,

        XAuint32 state)

    {

    XAresult ret = XA_RESULT_SUCCESS;

    XAboolean closeSink = XA_BOOLEAN_FALSE;

    XAboolean requestStateChange = XA_BOOLEAN_FALSE;

    GstStateChangeReturn gstRet = GST_STATE_CHANGE_SUCCESS;

    XAMediaRecorderAdaptationCtx* mCtx = NULL;

    if (!bCtx || bCtx->baseObj.ctxId != XAMediaRecorderAdaptation)

        {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        DEBUG_API("<-XARecordItfAdapt_SetRecordState");

        return XA_RESULT_PARAMETER_INVALID;

        }

    mCtx = (XAMediaRecorderAdaptationCtx*) bCtx;

    switch (state)

        {

        case XA_RECORDSTATE_STOPPED:

            {

            // Audio sourse should be stopped 

                {

                if (gst_element_send_event(mCtx->audiosource,

                        gst_event_new_eos()) == TRUE)

                    {

                    DEBUG_INFO ("posted eos");

                    }

                else

                    {

                    DEBUG_ERR("FAIL : post eos");

                    }

                }

            closeSink = XA_BOOLEAN_TRUE;

            if (mCtx->runpositiontimer > 0)

                {

                g_source_remove(mCtx->runpositiontimer);

                mCtx->runpositiontimer = 0;

                }

            break;

            }

        case XA_RECORDSTATE_PAUSED:

            {

            if (mCtx->xaRecordState == XA_RECORDSTATE_STOPPED

                    && mCtx->encodingchanged)

                {

                ret = XAMediaRecorderAdapt_ChangeEncoders(mCtx);

                mCtx->encodingchanged = XA_BOOLEAN_FALSE;

                if(ret != XA_RESULT_SUCCESS)

                    {

                      return ret;

                    }

                }

            bCtx->binWantedState = GST_STATE_PAUSED;

            if (mCtx->runpositiontimer > 0)

                {

                g_source_remove(mCtx->runpositiontimer);

                mCtx->runpositiontimer = 0;

                }

            break;

            }

        case XA_RECORDSTATE_RECORDING:

            {

            if (mCtx->xaRecordState == XA_RECORDSTATE_STOPPED

                    && (mCtx->encodingchanged))

                {

                ret = XAMediaRecorderAdapt_ChangeEncoders(mCtx);

                mCtx->encodingchanged = XA_BOOLEAN_FALSE;

                if(ret != XA_RESULT_SUCCESS)

                    {

                      return ret;

                    }

                }

            bCtx->binWantedState = GST_STATE_PLAYING;

            break;

            }

        default:

            ret = XA_RESULT_PARAMETER_INVALID;

            break;

        }

    if (ret == XA_RESULT_SUCCESS)

        {

        mCtx->xaRecordState = state;

        }

    /* launch Gstreamer state change only if necessary */

    if (GST_STATE_TARGET(bCtx->bin) == bCtx->binWantedState)

        {

        DEBUG_INFO("Gst already transitioning to wanted state!!");

        requestStateChange = XA_BOOLEAN_FALSE;

        }

    else

        {

        if ((GST_STATE(bCtx->bin) == bCtx->binWantedState)

                && (GST_STATE_PENDING(bCtx->bin) == GST_STATE_VOID_PENDING))

            {

            DEBUG_ERR_A3("WARNING : gststate %d == wanted %d != gsttarget %d and no statechange pending",

                    GST_STATE(bCtx->bin), bCtx->binWantedState, GST_STATE_TARGET(bCtx->bin));

            }

        requestStateChange = XA_BOOLEAN_TRUE;

        }

    if (requestStateChange)

        {

        XAAdaptationGst_PrepareAsyncWait(bCtx);

        DEBUG_INFO_A1("Sending change state request to state %d", bCtx->binWantedState);

        gstRet = gst_element_set_state(GST_ELEMENT(bCtx->bin),

                bCtx->binWantedState);

        switch (gstRet)

            {

            case GST_STATE_CHANGE_FAILURE:

                bCtx->binWantedState = GST_STATE(bCtx->bin);

                ret = XA_RESULT_INTERNAL_ERROR;

                break;

            case GST_STATE_CHANGE_ASYNC:

                DEBUG_INFO_A1("Change state will happen asyncronously (target %d)",bCtx->binWantedState);

                XAAdaptationGst_StartAsyncWait(bCtx);

                ret = XA_RESULT_SUCCESS;

                break;

            case GST_STATE_CHANGE_NO_PREROLL:

                /* deliberate fall-through */

            case GST_STATE_CHANGE_SUCCESS:

                ret = XA_RESULT_SUCCESS;

                break;

            default:

                ret = XA_RESULT_UNKNOWN_ERROR;

                break;

            }

        bCtx->waitingasyncop = XA_BOOLEAN_FALSE;

        }

    if ((GST_STATE(bCtx->bin) > GST_STATE_READY) && closeSink)

        { /* close the sink*/

        gst_element_send_event(bCtx->bin, gst_event_new_flush_start());

        gst_element_send_event(bCtx->bin, gst_event_new_flush_stop());

        }

    DEBUG_API("<-XARecordItfAdapt_SetRecordState");

    return ret;

    }

/*

 * XAresult XARecordItfAdapt_GetRecordState(XAAdaptationGstCtx *bCtx, XAuint32 *state)

 * Description: Return record state

 */

XAresult XARecordItfAdapt_GetRecordState(XAAdaptationGstCtx *bCtx,

        XAuint32 *state)

    {

    XAMediaRecorderAdaptationCtx* mCtx = NULL;

    DEBUG_API("->XARecordItfAdapt_GetRecordState");

    if (!bCtx || bCtx->baseObj.ctxId != XAMediaRecorderAdaptation)

        {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        DEBUG_API("<-XARecordItfAdapt_GetRecordState");

        return XA_RESULT_PARAMETER_INVALID;

        }

    mCtx = (XAMediaRecorderAdaptationCtx*) bCtx;

    *state = mCtx->xaRecordState;

    DEBUG_API("<-XARecordItfAdapt_GetRecordState");

    return XA_RESULT_SUCCESS;

    }

/*

 * XAresult XARecordItfAdapt_GetPosition(XAAdaptationGstCtx *ctx, AdaptationContextIDS ctxIDs, XAmillisecond *pMsec)

 * @param XAAdaptationGstCtx *ctx - Adaptation context, this will be casted to correct type regarding to contextID value given as 2nd parameter

 * XAmillisecond *pMsec - Pointer where to store current position in stream.

 * @return XAresult ret - Success value

 */

XAresult XARecordItfAdapt_GetPosition(XAAdaptationGstCtx *bCtx,

        XAmillisecond *pMsec)

    {

    XAresult ret = XA_RESULT_SUCCESS;

    gint64 position = 0;

    GstFormat format = GST_FORMAT_TIME;

    DEBUG_API("->XARecordItfAdapt_GetPosition");

    if (!bCtx || bCtx->baseObj.ctxId != XAMediaRecorderAdaptation)

        {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        DEBUG_API("<-XARecordItfAdapt_GetPosition");

        /* invalid parameter */

        return XA_RESULT_PARAMETER_INVALID;

        }

    if (gst_element_query_position(GST_ELEMENT(bCtx->bin), &format, &position))

        {

        ret = XA_RESULT_SUCCESS;

        *pMsec = GST_TIME_AS_MSECONDS(position); /*Warning ok due to used API specification*/

        DEBUG_INFO_A1("Gst: Position in microseconds : %u", *pMsec );

        }

    else

        {

        DEBUG_ERR("WARNING: Gst: could not get position");

        /* probably not fully prerolled - safe assumption for position = 0 */

        *pMsec = 0;

        ret = XA_RESULT_SUCCESS;

        }

    DEBUG_API("<-XARecordItfAdapt_GetPosition");

    return ret;

    }

/*

 * gboolean XARecordItfAdapt_PositionUpdate(gpointer ctx)

 * callback.

 * If position tracking enabled, periodic timer calls this method every XA_ADAPT_PU_INTERVAL msecs

 * @return false to stop periodic calls

 */

gboolean XARecordItfAdapt_PositionUpdate(gpointer ctx)

    {

    XAAdaptationGstCtx *bCtx = (XAAdaptationGstCtx*) ctx;

    XAMediaRecorderAdaptationCtx* mCtx = (XAMediaRecorderAdaptationCtx*) ctx;

    DEBUG_API("->XARecordItfAdapt_PositionUpdate");

    if (mCtx && mCtx->trackpositionenabled)

        {

        GstFormat format = GST_FORMAT_TIME;

        gint64 position = 0;

        if (gst_element_query_position(GST_ELEMENT(bCtx->bin), &format,

                &position))

            {

            XAuint32 posMsec = GST_TIME_AS_MSECONDS(position);

            /*Warning ok due to used API specification*/

            XAAdaptEvent event =

                {

                XA_RECORDITFEVENTS, XA_ADAPT_POSITION_UPDATE_EVT, 1, NULL

                };

            event.data = &posMsec;

            DEBUG_API_A1("XARecordItfAdapt_PositionUpdate: pos %lu ms", posMsec);

            /* send needed events */

            XAAdaptationBase_SendAdaptEvents(&bCtx->baseObj, &event);

            }

        else

            {

            DEBUG_ERR("Gst: Failed to get position");

            }

        DEBUG_API_A1("<-XARecordItfAdapt_PositionUpdate: %d", mCtx->runpositiontimer);

        /* return false to stop timer */

        return (mCtx->runpositiontimer);

        }

    return FALSE;

    }

/*

 * XAresult XARecordItfAdapt_EnablePositionTracking

 * Enable/disable periodic position tracking callbacks

 */

XAresult XARecordItfAdapt_EnablePositionTracking(XAAdaptationGstCtx *bCtx,

        XAboolean enable)

    {

    XAMediaRecorderAdaptationCtx* mCtx = (XAMediaRecorderAdaptationCtx*) bCtx;

    DEBUG_API_A1("->XARecordItfAdapt_EnablePositionTracking (enable: %lu)", enable);

    if (!bCtx || bCtx->baseObj.ctxId != XAMediaRecorderAdaptation)

        {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        DEBUG_API("<-XARecordItfAdapt_EnablePositionTracking");

        /* invalid parameter */

        return XA_RESULT_PARAMETER_INVALID;

        }

    /* create a timer to track position of playback */

    if (enable && !(mCtx->trackpositionenabled))

        {

        mCtx->trackpositionenabled = XA_BOOLEAN_TRUE;

        mCtx->positionCb = &XARecordItfAdapt_PositionUpdate;

        /* if recording is already on, create a timer to track position of recording */

        if (GST_STATE(bCtx->bin) == GST_STATE_PLAYING)

            {

            mCtx->runpositiontimer = g_timeout_add(XA_ADAPT_PU_INTERVAL,

                    mCtx->positionCb, mCtx);

            }

        }

    else if (!enable && (mCtx->trackpositionenabled))

        {

        mCtx->trackpositionenabled = XA_BOOLEAN_FALSE;

        if (mCtx->runpositiontimer > 0)

            {

            g_source_remove(mCtx->runpositiontimer);

            mCtx->runpositiontimer = 0;

            }

        }

    DEBUG_API("<-XARecordItfAdapt_EnablePositionTracking");

    return XA_RESULT_SUCCESS;

    }