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/* ========================================================================
*  PROJECT: DirectShow Video Processing Library (DSVL)
*  Version: 0.0.8 (05/13/2005)
*  ========================================================================
*  Author:  Thomas Pintaric, Vienna University of Technology
*  Contact: pintaric@ims.tuwien.ac.at http://ims.tuwien.ac.at/~thomas
*  =======================================================================
*
*  Copyright (C) 2005  Vienna University of Technology
*
*  This library is free software; you can redistribute it and/or
*  modify it under the terms of the GNU General Public License
*  as published by the Free Software Foundation; either version 2
*  of the License, or (at your option) any later version.
*
*  This program 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 General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*
*  For further information please contact Thomas Pintaric under
*  <pintaric@ims.tuwien.ac.at> or write to Thomas Pintaric,
*  Vienna University of Technology, Favoritenstr. 9-11/E188/2, A-1040
*  Vienna, Austria.
* ========================================================================*/

#define DSVL_VERSION 0x00000802 // 0.0.8b

#ifdef DSVL_EXPORTS
#define DSVL_API __declspec(dllexport)
#else
#define DSVL_API __declspec(dllimport)
#endif

#include <Windows.h>
#include "DSVL_PixelFormatTypes.h"

// ------------------------------------------------------------
#ifndef __MEMORY_BUFFER_HANDLE__
#define __MEMORY_BUFFER_HANDLE__

#define MIN_ALLOCATOR_BUFFERS_PER_CLIENT  3
#define DEF_CONCURRENT_CLIENTS            3
struct MemoryBufferHandle
{
        unsigned long  n; // sample number
        LONGLONG t; // timestamp
};

#endif

#define _INVALID_TIMESTAMP 0;
// ------------------------------------------------------------

class DSVL_API DSVL_VideoSource
{
public:
        DSVL_VideoSource();
        ~DSVL_VideoSource();

        HRESULT BuildGraphFromXMLString(char* xml_string = NULL);
        HRESULT BuildGraphFromXMLFile(char* xml_filename = NULL);
        HRESULT ReleaseGraph();

        HRESULT EnableMemoryBuffer(unsigned int _maxConcurrentClients = DEF_CONCURRENT_CLIENTS,
                               unsigned int _allocatorBuffersPerClient = MIN_ALLOCATOR_BUFFERS_PER_CLIENT);
        HRESULT DisableMemoryBuffer();

        bool IsGraphInitialized();
        DWORD WaitForNextSample(long dwMilliseconds = INFINITE);

        HRESULT CheckoutMemoryBuffer(MemoryBufferHandle* pHandle,
                BYTE** Buffer,
                unsigned int *Width = NULL,
                unsigned int *Height = NULL,
                PIXELFORMAT* PixelFormat = NULL,
                LONGLONG* Timestamp = NULL);

        HRESULT CheckinMemoryBuffer(MemoryBufferHandle Handle, bool ForceRelease = false);

        HRESULT GetCurrentMediaFormat(LONG* frame_width,
                                  LONG *frame_height,
                                                                  double* frames_per_second,
                                                                  PIXELFORMAT* pixel_format);
        LONGLONG GetCurrentTimestamp();

        // media flow control
        HRESULT Run();
        HRESULT Pause();
        HRESULT Stop(bool forcedStop = false);

private:
        void* p_graphManager;
};