/*

* 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: 

*

*/

#include <gst/gst.h>

#include "xaadaptationgst.h"

#include "xamediaplayeradaptctx.h"

#include "xaplaybackrateitfadaptation.h"

#include "xaplayitfadaptation.h"

/*XA_RATEPROP_STAGGEREDVIDEO,XA_RATEPROP_SMOOTHVIDEO,XA_RATEPROP_SILENTAUDIO,

  XA_RATEPROP_STAGGEREDAUDIO,XA_RATEPROP_NOPITCHCORAUDIO,XA_RATEPROP_PITCHCORAUDIO*/

#define SUPPORTEDPROPS (XA_RATEPROP_SMOOTHVIDEO | XA_RATEPROP_SILENTAUDIO)

/* NOTE: currently rewind rates do not seem to work */

#define MINRATE (100)

#define MAXRATE 8000

/*

 * XAresult XAPlaybackRateItfAdapt_SetRate(XAAdaptationGstCtx *bCtx, XApermille rate)

 * @param XAAdaptationGstCtx *bCtx - Adaptation context, this will be casted to correct type regarding to contextID value

 * @param XApermille rate - new playback rate in permilles of original speed

 * @return XAresult ret - Success value

 */

XAresult XAPlaybackRateItfAdapt_SetRate(XAAdaptationGstCtx *bCtx, XApermille rate)

{

    XAresult ret = XA_RESULT_SUCCESS;

    XAMediaPlayerAdaptationCtx* mCtx = (XAMediaPlayerAdaptationCtx*) bCtx;

    DEBUG_API_A1("->XAPlaybackRateItfAdapt_SetRate %d permilles", rate);

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

    {

        DEBUG_ERR("Invalid context!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    if( rate<MINRATE || rate>MAXRATE )

    {

        DEBUG_ERR("Invalid rate!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    if(rate != 0)

    {

        mCtx->playrate = ((gdouble)rate)/1000;

        if( GST_STATE(bCtx->bin) < GST_STATE_PAUSED )

        {   /* This should not happen */

            DEBUG_ERR("WARNING: Gst not prerolled yet!");

        }

        else

        {

            /* apply immediately */

            XAAdaptationGst_PrepareAsyncWait(bCtx);

            DEBUG_INFO_A1("Apply new playrate %f.", mCtx->playrate);

            if(!gst_element_seek( bCtx->bin, mCtx->playrate, GST_FORMAT_TIME,

                                (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE),

                                GST_SEEK_TYPE_NONE, 0,

                                GST_SEEK_TYPE_NONE, -1))

            {

                DEBUG_ERR("WARN: gst reports seek not handled");

            }

            /* flushed seeks always asynchronous */

            XAAdaptationGst_StartAsyncWait(bCtx);

            DEBUG_INFO("New playrate handled.")

            bCtx->waitingasyncop = XA_BOOLEAN_FALSE;

        }

    }

    else

    {  /* Gst do not accept rate of 0, pause instead */

        mCtx->playrate = 1.0;

        if( GST_STATE(bCtx->bin) > GST_STATE_PAUSED )

        {

            DEBUG_ERR("Pause playback");

            XAPlayItfAdaptGST_SetPlayState((XAAdaptationBaseCtx *)bCtx, XA_PLAYSTATE_PAUSED);

        }

    }

    DEBUG_API("<-XAPlaybackRateItfAdapt_SetRate");

    return ret;

}

/*

 * XAresult XAPlaybackRateItfAdapt_SetPropertyConstraints(XAAdaptationGstCtx *bCtx,

 *                                                       XAuint32 constraints)

 */

XAresult XAPlaybackRateItfAdapt_SetPropertyConstraints(XAAdaptationGstCtx *bCtx,

                                                       XAuint32 constraints)

{

    XAresult ret = XA_RESULT_SUCCESS;

    XAMediaPlayerAdaptationCtx* mCtx = NULL;

    DEBUG_API("->XAPlaybackRateItfAdapt_SetPropertyConstraints");

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

    {

        DEBUG_ERR("Invalid context!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    mCtx = (XAMediaPlayerAdaptationCtx*) bCtx;

    if( (constraints & SUPPORTEDPROPS ) == 0 )

    {

        DEBUG_ERR("constraints cannot be satisfied!!");

        ret = XA_RESULT_FEATURE_UNSUPPORTED;

    }

    else

    {

        mCtx->rateprops = SUPPORTEDPROPS & constraints;

    }

    DEBUG_API("<-XAPlaybackRateItfAdapt_SetPropertyConstraints");

    return ret;

}

/*

 * XAresult XAPlaybackRateItfAdapt_GetProperties(XAAdaptationGstCtx *bCtx,

 *                                              XAuint32 *pProperties)

 */

XAresult XAPlaybackRateItfAdapt_GetProperties(XAAdaptationGstCtx *bCtx,

                                               XAuint32 *pProperties)

{

    XAresult ret = XA_RESULT_SUCCESS;

    XAMediaPlayerAdaptationCtx* mCtx = NULL;

    DEBUG_API("->XAPlaybackRateItfAdapt_GetProperties");

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

    {

        DEBUG_ERR("Invalid context!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    mCtx = (XAMediaPlayerAdaptationCtx*) bCtx;

    *pProperties = mCtx->rateprops;

    DEBUG_API("<-XAPlaybackRateItfAdapt_GetProperties");

    return ret;

}

XAresult XAPlaybackRateItfAdapt_GetCapabilitiesOfRate(XAAdaptationGstCtx *bCtx,

                                                       XApermille rate,

                                                       XAuint32 *pCapabilities)

{

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAPlaybackRateItfAdapt_GetCapabilitiesOfRate");

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

    {

        DEBUG_ERR("Invalid context!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    if( rate<MINRATE || rate>MAXRATE )

    {

        DEBUG_ERR("Invalid rate!");

        *pCapabilities = 0;

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        *pCapabilities = SUPPORTEDPROPS;

    }

    DEBUG_API("<-XAPlaybackRateItfAdapt_GetCapabilitiesOfRate");

    return ret;

}

XAresult XAPlaybackRateItfAdapt_GetRateRange(XAAdaptationGstCtx *bCtx,

                                             XAuint8 index,

                                             XApermille *pMinRate,

                                             XApermille *pMaxRate,

                                             XApermille *pStepSize,

                                             XAuint32 *pCapabilities)

{

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAPlaybackRateItfAdapt_GetRateRange");

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

    {

        DEBUG_ERR("Invalid context!");

        return XA_RESULT_PARAMETER_INVALID;

    }

    /* NOTE: hardcoded values, cannot be queried from gst */

    /* only one range supported */

    if( index>0 )

    {

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        *pMinRate = MINRATE;

        *pMaxRate = MAXRATE;

        *pStepSize = 0; /* continuous range */

        *pCapabilities = SUPPORTEDPROPS;

    }

    DEBUG_API("<-XAPlaybackRateItfAdapt_GetRateRange");

    return ret;

}