/*
   (c) Copyright 2001-2009  The world wide DirectFB Open Source Community (directfb.org)
   (c) Copyright 2000-2004  Convergence (integrated media) GmbH

   All rights reserved.

   Written by Denis Oliver Kropp <dok@directfb.org>,
              Andreas Hundt <andi@fischlustig.de>,
              Sven Neumann <neo@directfb.org>,
              Ville Syrjälä <syrjala@sci.fi> and
              Claudio Ciccani <klan@users.sf.net>.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <config.h>

#include <stdio.h>
#include <stdlib.h>

#include <string.h>

#include <directfb.h>

#include <direct/debug.h>
#include <direct/interface.h>

#include <voodoo/manager.h>
#include <voodoo/message.h>

#include <core/coredefs.h>

#include "idirectfbscreen_dispatcher.h"


static DFBResult Probe( void );
static DFBResult Construct( IDirectFBScreen  *thiz,
                            IDirectFBScreen  *real,
                            VoodooManager    *manager,
                            VoodooInstanceID  super,
                            void             *arg,
                            VoodooInstanceID *ret_instance );

#include <direct/interface_implementation.h>

DIRECT_INTERFACE_IMPLEMENTATION( IDirectFBScreen, Dispatcher )

/**************************************************************************************************/

/*
 * private data struct of IDirectFBScreen_Dispatcher
 */
typedef struct {
     int                    ref;      /* reference counter */

     IDirectFBScreen       *real;

     VoodooInstanceID       self;         /* The instance of this dispatcher itself. */
     VoodooInstanceID       super;        /* The instance of the creator. */
} IDirectFBScreen_Dispatcher_data;

/**************************************************************************************************/

static void
IDirectFBScreen_Dispatcher_Destruct( IDirectFBScreen *thiz )
{
     IDirectFBScreen_Dispatcher_data *data = thiz->priv;

     D_DEBUG( "%s (%p)\n", __FUNCTION__, thiz );

     data->real->Release( data->real );

     DIRECT_DEALLOCATE_INTERFACE( thiz );
}

/**************************************************************************************************/

static DirectResult
IDirectFBScreen_Dispatcher_AddRef( IDirectFBScreen *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     data->ref++;

     return DFB_OK;
}

static DirectResult
IDirectFBScreen_Dispatcher_Release( IDirectFBScreen *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (--data->ref == 0)
          IDirectFBScreen_Dispatcher_Destruct( thiz );

     return DFB_OK;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetID( IDirectFBScreen *thiz,
                                  DFBScreenID     *id )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!id)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetDescription( IDirectFBScreen      *thiz,
                                           DFBScreenDescription *desc )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!desc)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetSize( IDirectFBScreen *thiz,
                                    int             *width,
                                    int             *height )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)
     
     if (!width && !height)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_EnumDisplayLayers( IDirectFBScreen         *thiz,
                                              DFBDisplayLayerCallback  callbackfunc,
                                              void                    *callbackdata )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!callbackfunc)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_SetPowerMode( IDirectFBScreen    *thiz,
                                         DFBScreenPowerMode  mode )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_WaitForSync( IDirectFBScreen *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetMixerDescriptions( IDirectFBScreen           *thiz,
                                                 DFBScreenMixerDescription *descriptions )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!descriptions)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetMixerConfiguration( IDirectFBScreen      *thiz,
                                                  int                   mixer,
                                                  DFBScreenMixerConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_TestMixerConfiguration( IDirectFBScreen            *thiz,
                                                   int                         mixer,
                                                   const DFBScreenMixerConfig *config,
                                                   DFBScreenMixerConfigFlags  *failed )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSMCONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_SetMixerConfiguration( IDirectFBScreen            *thiz,
                                                  int                         mixer,
                                                  const DFBScreenMixerConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSMCONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetEncoderDescriptions( IDirectFBScreen             *thiz,
                                                   DFBScreenEncoderDescription *descriptions )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!descriptions)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetEncoderConfiguration( IDirectFBScreen        *thiz,
                                                    int                     encoder,
                                                    DFBScreenEncoderConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_TestEncoderConfiguration( IDirectFBScreen              *thiz,
                                                     int                           encoder,
                                                     const DFBScreenEncoderConfig *config,
                                                     DFBScreenEncoderConfigFlags  *failed )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSECONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_SetEncoderConfiguration( IDirectFBScreen              *thiz,
                                                    int                           encoder,
                                                    const DFBScreenEncoderConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSECONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetOutputDescriptions( IDirectFBScreen            *thiz,
                                                  DFBScreenOutputDescription *descriptions )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!descriptions)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_GetOutputConfiguration( IDirectFBScreen       *thiz,
                                                   int                    output,
                                                   DFBScreenOutputConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config)
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_TestOutputConfiguration( IDirectFBScreen             *thiz,
                                                    int                          output,
                                                    const DFBScreenOutputConfig *config,
                                                    DFBScreenOutputConfigFlags  *failed )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSOCONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

static DFBResult
IDirectFBScreen_Dispatcher_SetOutputConfiguration( IDirectFBScreen             *thiz,
                                                   int                          output,
                                                   const DFBScreenOutputConfig *config )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     if (!config || (config->flags & ~DSOCONF_ALL))
          return DFB_INVARG;

     return DFB_UNIMPLEMENTED;
}

/**************************************************************************************************/

static DirectResult
Dispatch_Release( IDirectFBScreen *thiz, IDirectFBScreen *real,
                  VoodooManager *manager, VoodooRequestMessage *msg )
{
     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     return voodoo_manager_unregister_local( manager, data->self );
}

static DirectResult
Dispatch_GetID( IDirectFBScreen *thiz, IDirectFBScreen *real,
                VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult ret;
     DFBScreenID  id;

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     ret = real->GetID( real, &id );
     if (ret)
          return ret;

     return voodoo_manager_respond( manager, true, msg->header.serial,
                                    DFB_OK, VOODOO_INSTANCE_NONE,
                                    VMBT_ID, id,
                                    VMBT_NONE );
}

static DirectResult
Dispatch_GetDescription( IDirectFBScreen *thiz, IDirectFBScreen *real,
                         VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult         ret;
     DFBScreenDescription desc;

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     ret = real->GetDescription( real, &desc );
     if (ret)
          return ret;

     return voodoo_manager_respond( manager, true, msg->header.serial,
                                    DFB_OK, VOODOO_INSTANCE_NONE,
                                    VMBT_DATA, sizeof(DFBScreenDescription), &desc,
                                    VMBT_NONE );
}

static DirectResult
Dispatch_GetSize( IDirectFBScreen *thiz, IDirectFBScreen *real,
                  VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult ret;
     DFBDimension size;

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     ret = real->GetSize( real, &size.w, &size.h );
     if (ret)
          return ret;

     return voodoo_manager_respond( manager, true, msg->header.serial,
                                    DFB_OK, VOODOO_INSTANCE_NONE,
                                    VMBT_DATA, sizeof(DFBDimension), &size,
                                    VMBT_NONE );
}

typedef struct {
     int                                               num;
     IDirectFBScreen_Dispatcher_EnumDisplayLayers_Item items[MAX_LAYERS];
} EnumDisplayLayers_Context;

static DFBEnumerationResult
EnumDisplayLayers_Callback( DFBDisplayLayerID           layer_id,
                            DFBDisplayLayerDescription  desc,
                            void                       *callbackdata )
{
     int                        index;
     EnumDisplayLayers_Context *context = callbackdata;

     if (context->num == MAX_LAYERS) {
          D_WARN( "maximum number of %d layers reached", MAX_LAYERS );
          return DFENUM_CANCEL;
     }

     index = context->num++;

     context->items[index].layer_id = layer_id;
     context->items[index].desc     = desc;

     return DFENUM_OK;
}

static DirectResult
Dispatch_EnumDisplayLayers( IDirectFBScreen *thiz, IDirectFBScreen *real,
                            VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult              ret;
     EnumDisplayLayers_Context context = { 0 };

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     ret = real->EnumDisplayLayers( real, EnumDisplayLayers_Callback, &context );
     if (ret)
          return ret;

     return voodoo_manager_respond( manager, true, msg->header.serial,
                                    DFB_OK, VOODOO_INSTANCE_NONE,
                                    VMBT_INT, context.num,
                                    VMBT_DATA, context.num * sizeof(IDirectFBScreen_Dispatcher_EnumDisplayLayers_Item), context.items,
                                    VMBT_NONE );
}

static DirectResult
Dispatch_SetPowerMode( IDirectFBScreen *thiz, IDirectFBScreen *real,
                       VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult        ret;
     VoodooMessageParser parser;
     DFBScreenPowerMode  mode;

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)
     
     VOODOO_PARSER_BEGIN( parser, msg );
     VOODOO_PARSER_GET_INT( parser, mode );
     VOODOO_PARSER_END( parser );

     ret = real->SetPowerMode( real, mode );
     
     return DFB_OK;
}

static DirectResult
Dispatch_WaitForSync( IDirectFBScreen *thiz, IDirectFBScreen *real,
                       VoodooManager *manager, VoodooRequestMessage *msg )
{
     DirectResult ret;

     DIRECT_INTERFACE_GET_DATA(IDirectFBScreen_Dispatcher)

     ret = real->WaitForSync( real );
     
     return DFB_OK;
}


static DirectResult
Dispatch( void *dispatcher, void *real, VoodooManager *manager, VoodooRequestMessage *msg )
{
     D_DEBUG( "IDirectFBScreen/Dispatcher: "
              "Handling request for instance %u with method %u...\n", msg->instance, msg->method );

     switch (msg->method) {
          case IDIRECTFBSCREEN_METHOD_ID_Release:
               return Dispatch_Release( dispatcher, real, manager, msg );

          case IDIRECTFBSCREEN_METHOD_ID_GetID:
               return Dispatch_GetID( dispatcher, real, manager, msg );
               
          case IDIRECTFBSCREEN_METHOD_ID_GetDescription:
               return Dispatch_GetDescription( dispatcher, real, manager, msg );
               
          case IDIRECTFBSCREEN_METHOD_ID_GetSize:
               return Dispatch_GetSize( dispatcher, real, manager, msg );

          case IDIRECTFBSCREEN_METHOD_ID_EnumDisplayLayers:
               return Dispatch_EnumDisplayLayers( dispatcher, real, manager, msg );
               
          case IDIRECTFBSCREEN_METHOD_ID_SetPowerMode:
               return Dispatch_SetPowerMode( dispatcher, real, manager, msg );
               
          case IDIRECTFBSCREEN_METHOD_ID_WaitForSync:
               return Dispatch_WaitForSync( dispatcher, real, manager, msg );
     }

     return DFB_NOSUCHMETHOD;
}

/**************************************************************************************************/

static DFBResult
Probe()
{
     /* This implementation has to be loaded explicitly. */
     return DFB_UNSUPPORTED;
}

static DFBResult
Construct( IDirectFBScreen  *thiz,
           IDirectFBScreen  *real,
           VoodooManager    *manager,
           VoodooInstanceID  super,
           void             *arg,      /* Optional arguments to constructor */
           VoodooInstanceID *ret_instance )
{
     DFBResult        ret;
     VoodooInstanceID instance;

     DIRECT_ALLOCATE_INTERFACE_DATA(thiz, IDirectFBScreen_Dispatcher)

     ret = voodoo_manager_register_local( manager, super, thiz, real, Dispatch, &instance );
     if (ret) {
          DIRECT_DEALLOCATE_INTERFACE( thiz );
          return ret;
     }

     *ret_instance = instance;

     data->ref   = 1;
     data->real  = real;
     data->self  = instance;
     data->super = super;

     thiz->AddRef                   = IDirectFBScreen_Dispatcher_AddRef;
     thiz->Release                  = IDirectFBScreen_Dispatcher_Release;
     thiz->GetID                    = IDirectFBScreen_Dispatcher_GetID;
     thiz->GetDescription           = IDirectFBScreen_Dispatcher_GetDescription;
     thiz->GetSize                  = IDirectFBScreen_Dispatcher_GetSize;
     thiz->EnumDisplayLayers        = IDirectFBScreen_Dispatcher_EnumDisplayLayers;
     thiz->SetPowerMode             = IDirectFBScreen_Dispatcher_SetPowerMode;
     thiz->WaitForSync              = IDirectFBScreen_Dispatcher_WaitForSync;
     thiz->GetMixerDescriptions     = IDirectFBScreen_Dispatcher_GetMixerDescriptions;
     thiz->GetMixerConfiguration    = IDirectFBScreen_Dispatcher_GetMixerConfiguration;
     thiz->TestMixerConfiguration   = IDirectFBScreen_Dispatcher_TestMixerConfiguration;
     thiz->SetMixerConfiguration    = IDirectFBScreen_Dispatcher_SetMixerConfiguration;
     thiz->GetEncoderDescriptions   = IDirectFBScreen_Dispatcher_GetEncoderDescriptions;
     thiz->GetEncoderConfiguration  = IDirectFBScreen_Dispatcher_GetEncoderConfiguration;
     thiz->TestEncoderConfiguration = IDirectFBScreen_Dispatcher_TestEncoderConfiguration;
     thiz->SetEncoderConfiguration  = IDirectFBScreen_Dispatcher_SetEncoderConfiguration;
     thiz->GetOutputDescriptions    = IDirectFBScreen_Dispatcher_GetOutputDescriptions;
     thiz->GetOutputConfiguration   = IDirectFBScreen_Dispatcher_GetOutputConfiguration;
     thiz->TestOutputConfiguration  = IDirectFBScreen_Dispatcher_TestOutputConfiguration;
     thiz->SetOutputConfiguration   = IDirectFBScreen_Dispatcher_SetOutputConfiguration;

     return DFB_OK;
}