deargui-vpl/ref/virtools/Samples/Behaviors/Video/Sources/InputFormats.cpp

/*************************************************************************/
/*	File : InputFormats.cpp												 */
/*																		 */	
/*	Author :  Leïla AIT KACI											 */	
/*	Last Modification : 28/05/03										 */	
/*************************************************************************/
#include "CKAll.h"
#include "CKVideo.h"
#include "CKVideoManager.h"

CKObjectDeclaration*	FillBehaviorInputFormatsDecl		();
CKERROR					CreateInputFormatsProto				(CKBehaviorPrototype **);
int						InputFormats						(const CKBehaviorContext& BehContext);


//////////////////////////////////////////////////////////////////////
//								Defines
//////////////////////////////////////////////////////////////////////
#define BB_NAME			"Get Video Input Formats"
#define BB_DESC			"Get the available input formats descriptions for the given capture ID"
#define BB_CAT			"Video/Controls"
#define BB_VERSION		0x00010000
#define BB_TARGET		CKCID_BEOBJECT


//////////////////////////////////////////////////////////////////////
//						Enums for Parameter's Indexes
//////////////////////////////////////////////////////////////////////
enum BB_IN 
{
	IN_IN,
	IN_LOOPIN
};

enum BB_OUT
{
	OUT_OUT,
	OUT_LOOPOUT
};

enum BB_LOC
{
};

enum BB_PIN
{
	PIN_CAPTUREID
};

enum BB_POUT
{
	POUT_COUNT,
	POUT_ID,
	POUT_NAME,
	POUT_SIZE,
	POUT_FREQUENCY
};

//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
CKObjectDeclaration	*FillBehaviorInputFormatsDecl()
{
	CKObjectDeclaration *od = CreateCKObjectDeclaration(BB_NAME);	
	od->SetType(CKDLL_BEHAVIORPROTOTYPE);
	od->SetCompatibleClassId(BB_TARGET);
	od->SetDescription(BB_DESC);
	od->SetVersion(BB_VERSION);
	od->SetCategory(BB_CAT);
	od->SetAuthorName("Virtools");
	od->SetAuthorGuid(VIRTOOLS_GUID);
	od->SetGuid(CKGUID(0x416b4dc8,0x496d0e81));
	od->SetCreationFunction(CreateInputFormatsProto);

	return od;
}

//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
CKERROR CreateInputFormatsProto(CKBehaviorPrototype** pproto)
{
	CKBehaviorPrototype *proto = CreateCKBehaviorPrototype(BB_NAME);
	if(!proto) 	return CKERR_OUTOFMEMORY;

	//---	Inputs declaration
	proto->DeclareInput("In");
	proto->DeclareInput("Loop In");

	//---	Outputs declaration
	proto->DeclareOutput("Out");
	proto->DeclareOutput("Loop Out");

	//----- Input Parameters Declaration
	proto->DeclareInParameter("Capture ID", CKPGUID_VIDEOCAPTURE, "0");

	//---	Output Parameters Declaration
	proto->DeclareOutParameter("Count",		CKPGUID_INT			);
	proto->DeclareOutParameter("ID",		CKPGUID_INT			);
	proto->DeclareOutParameter("Name",		CKPGUID_STRING		);
	proto->DeclareOutParameter("Size",		CKPGUID_2DVECTOR	);
	proto->DeclareOutParameter("Frequency",	CKPGUID_2DVECTOR	);

	//----	Settings Declaration
	proto->SetFlags(CK_BEHAVIORPROTOTYPE_NORMAL);
	proto->SetBehaviorFlags(CKBEHAVIOR_NONE);
	proto->SetFunction(InputFormats);

	*pproto = proto;
	return CK_OK;
}

//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
int InputFormats(const CKBehaviorContext& BehContext)
{
	CKContext*	ctx		= BehContext.Context;
	CKBehavior*	beh		= BehContext.Behavior;

	int		Count		= -1;
	int		CurrentID	= -1;

	// Then, we get the manager and return if failed
	CKVideoManager* vm = (CKVideoManager*) ctx->GetManagerByGuid(CKVideoManager::GetGUID());
	if ( !vm )
		return CKBR_GENERICERROR;

	// Get the capture ID
	int CaptureID = 0;
	beh->GetInputParameterValue(PIN_CAPTUREID, &CaptureID);

	// Start Iteration
	if ( beh->IsInputActive(IN_IN) )
	{
		beh->ActivateInput(IN_IN, FALSE);

		// Get the available format count
		Count = vm->GetVideoInputFormatCount(CaptureID);
		beh->SetOutputParameterValue(POUT_COUNT, &Count);

		// And reset the current index (ID) to start iteration
		beh->SetOutputParameterValue(POUT_ID, &CurrentID);

		// Don't return to start the iteration
	}
	else
		beh->ActivateInput(IN_LOOPIN, FALSE);

	// Get current count, if <0, no iteration is possible.
	beh->GetOutputParameterValue(POUT_COUNT, &Count);
	if ( Count < 0 ) {
		beh->ActivateOutput(OUT_OUT);
		return CKBR_OK;
	}

	// Get next description ID
	beh->GetOutputParameterValue(POUT_ID, &CurrentID);
	CurrentID++;
	if ( CurrentID >= Count ) {
		beh->ActivateOutput(OUT_OUT);
		return CKBR_OK;
	}

	// Get the format description and update outputs
	const CKVideoInputFormatDesc* desc = vm->GetVideoInputFormatDesc(CaptureID, CurrentID);
	XString name = desc->m_Format;
	beh->SetOutputParameterValue(POUT_NAME,			name.Str(),		name.Length()+1	);
	beh->SetOutputParameterValue(POUT_ID,			&CurrentID						);
	beh->SetOutputParameterValue(POUT_SIZE,			&desc->m_Size					);
	beh->SetOutputParameterValue(POUT_FREQUENCY,	&desc->m_Frequency				);

	// And return
	beh->ActivateOutput(OUT_LOOPOUT);
	return CKBR_OK;
}