// This is the main DLL file.

#include "platformtypes.h"

#include <KhronosAPIWrapper.h>

#include <guestvideodriverinterfaceconstants.h>  //Registers and enums 

#include <platformthreading.h>  //mutex

#include <graphicsvhwcallback.h>

SyborgGraphicsWrapper::SyborgGraphicsWrapper()

    {															

    }

SyborgGraphicsWrapper::~SyborgGraphicsWrapper()

    {

    delete m_wrapper;

    m_wrapper = 0;

    Psu::platform_release_semaphore(m_outputBufferSemaphore);

    }

int SyborgGraphicsWrapper::Reset( uint32_t *aGraphicsMemBase,  uint32_t *aCommandMemBase )

    {

    int ret = -1;

    if ( m_wrapper )

        {

        delete m_wrapper;

	    }

    m_wrapper = NULL;

    uint8_t *cmd_buffer = (uint8_t *)aCommandMemBase;

    uint8_t *frame_buffer = (uint8_t *)aGraphicsMemBase;

    if( (cmd_buffer != NULL) && (frame_buffer != NULL) )

        {

        m_wrapper = new KhronosAPIWrapper( (MGraphicsVHWCallback*)this,

            frame_buffer, &cmd_buffer[VVHW_INPUT_BASE], &cmd_buffer[VVHW_OUTPUT_BASE] );

        //Reset synchronisation mechanisms

        Psu::platform_release_semaphore(m_outputBufferSemaphore);

        Psu::platform_create_semaphore(m_outputBufferSemaphore, 1, 1);

        ret = 0;

        }

    else

        {

        ret = -1;

        }

    return ret;

    }

void SyborgGraphicsWrapper::LockOutputBuffer()

    {

    #ifdef KHRONOS_API_W_MULTITHREAD

    Psu::platform_wait_for_signal(m_outputBufferSemaphore);

    #endif

    }

void SyborgGraphicsWrapper::ReleaseOutputBuffer(){}

void SyborgGraphicsWrapper::ProcessingDone(int i)

    {

    m_pythonCallBack( i );

    }

extern "C"

    {

    SYBORG_GRAPHICSWRAPPER_API SyborgGraphicsWrapper* create_SyborgGraphicsWrapper()

        {

        return new SyborgGraphicsWrapper();

        }

    SYBORG_GRAPHICSWRAPPER_API int initialize_SyborgGraphicsWrapper( SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        Psu::platform_create_semaphore(m_outputBufferSemaphore, 1, 1);

        // Change to proper error handling

        return 0;

        }

    SYBORG_GRAPHICSWRAPPER_API int set_GraphicsCallBack( SyborgGraphicsWrapper* aSyborgGraphicsWrapper, int (*aGraphicsCallBack) (int) )

        {

        m_pythonCallBack = aGraphicsCallBack;

        // Change to proper error handling

        return 0;

        }

    SYBORG_GRAPHICSWRAPPER_API int reset_SyborgGraphicsWrapper(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t *aGraphicsMemBase,  uint32_t *aCommandMemBase )

        {

        return aSyborgGraphicsWrapper->Reset( aGraphicsMemBase, aCommandMemBase );

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_InputBufferTail(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->InputBufferTail();

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_InputBufferHead(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->InputBufferHead( );

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_InputBufferReadCount(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->InputBufferReadCount( );

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_InputBufferWriteCount(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->InputBufferWriteCount( );

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_InputMaxTailIndex(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->InputMaxTailIndex( );

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_cmd_memsize( void )

        {

        return (VVI_PARAMETERS_INPUT_MEMORY_SIZE +

                VVI_PARAMETERS_OUTPUT_MEMORY_SIZE);

        }

    SYBORG_GRAPHICSWRAPPER_API uint32_t get_framebuffer_memsize( void )

        {

        return VVI_FRAMEBUFFER_MEMORY_SIZE;

        }

    SYBORG_GRAPHICSWRAPPER_API unsigned int execute_command(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        return m_wrapper->Execute( );

        }

    SYBORG_GRAPHICSWRAPPER_API void set_InputBufferTail(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t aVal )

        {

        m_wrapper->SetInputBufferTail( aVal );

        }

    SYBORG_GRAPHICSWRAPPER_API void set_InputBufferHead(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t aVal )

        {

        m_wrapper->SetInputBufferHead( aVal );

        }

    SYBORG_GRAPHICSWRAPPER_API void set_InputBufferReadCount(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t aVal )

        {

        m_wrapper->SetInputBufferReadCount( aVal );

        }

    SYBORG_GRAPHICSWRAPPER_API void set_InputBufferWriteCount(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t aVal )

        {

        m_wrapper->SetInputBufferWriteCount( aVal );

        }

    SYBORG_GRAPHICSWRAPPER_API void set_InputMaxTailIndex(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper, uint32_t aVal )

        {

        m_wrapper->SetInputMaxTailIndex( aVal );

        }

    SYBORG_GRAPHICSWRAPPER_API void signal_outputbuffer_semafore(  SyborgGraphicsWrapper* aSyborgGraphicsWrapper )

        {

        #ifdef KHRONOS_API_W_MULTITHREAD

            Psu::platform_signal_semaphore(m_outputBufferSemaphore);

        #endif

        }

    }