root/ossiedev/branches/jgaeddert/0.8.0/components/src/PacketDecoder.cpp @ 10639

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

Copyright 2010 by your_name_or_organization, all rights reserved.

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


#include <cstdio>
#include <string>
#include <iostream>

#include "config.h"
#include "PacketDecoder.h"

// include main.cpp (must define COMPONENT_OBJECT)
#define  COMPONENT_OBJECT PacketDecoder_i
#include "main.cpp"

PacketDecoder_i::PacketDecoder_i(const char *uuid, omni_condition *condition) :
    Resource_impl(uuid), component_running(condition)
{
    portCodedDataIn = new standardInterfaces_i::realChar_p("CodedDataIn");
    portDecodedDataOut = new standardInterfaces_i::realChar_u("DecodedDataOut");

    // create DSP packetizer object
    check     = CRC_16;
    fec_inner = FEC_NONE;
    fec_outer = FEC_HAMMING128;
    dec_msg_len = 0;
    enc_msg_len = packetizer_compute_enc_msg_len(dec_msg_len,check,fec_inner,fec_outer);
    p = packetizer_create(dec_msg_len,check,fec_inner,fec_outer);
}

PacketDecoder_i::~PacketDecoder_i(void)
{
    delete portCodedDataIn;
    delete portDecodedDataOut;
}

// Static function for omni thread
void PacketDecoder_i::Run( void * data )
{
    ((PacketDecoder_i*)data)->ProcessData();
}

CORBA::Object_ptr PacketDecoder_i::getPort( const char* portName ) throw (
    CORBA::SystemException, CF::PortSupplier::UnknownPort)
{
    DEBUG(3, PacketDecoder, "getPort() invoked with " << portName)

    CORBA::Object_var p;

    p = portCodedDataIn->getPort(portName);

    if (!CORBA::is_nil(p))
        return p._retn();

    p = portDecodedDataOut->getPort(portName);

    if (!CORBA::is_nil(p))
        return p._retn();

    /*exception*/
    throw CF::PortSupplier::UnknownPort();
}

void PacketDecoder_i::start() throw (CORBA::SystemException,
    CF::Resource::StartError)
{
    DEBUG(3, PacketDecoder, "start() invoked")
    omni_mutex_lock  l(processing_mutex);
    if( false == thread_started )
    {
        thread_started = true;
        // Create the thread for the writer's processing function
        processing_thread = new omni_thread(Run, (void *) this);

        // Start the thread containing the writer's processing function
        processing_thread->start();
    }
}

void PacketDecoder_i::stop() throw (CORBA::SystemException, CF::Resource::StopError)
{
    DEBUG(3, PacketDecoder, "stop() invoked")
    omni_mutex_lock l(processing_mutex);
    thread_started = false;
}

void PacketDecoder_i::releaseObject() throw (CORBA::SystemException,
    CF::LifeCycle::ReleaseError)
{
    DEBUG(3, PacketDecoder, "releaseObject() invoked")

    component_running->signal();
}

void PacketDecoder_i::initialize() throw (CF::LifeCycle::InitializeError,
    CORBA::SystemException)
{
    DEBUG(3, PacketDecoder, "initialize() invoked")
}

void PacketDecoder_i::query( CF::Properties & configProperties ) throw (CORBA::SystemException, CF::UnknownProperties)
{
    if( configProperties.length() == 0 )
    {
        configProperties.length( propertySet.length() );
        for( unsigned int i = 0; i < propertySet.length(); i++ )
        {
            configProperties[i].id = CORBA::string_dup( propertySet[i].id );
            configProperties[i].value = propertySet[i].value;
        }
        return;
    } else {
        for( unsigned int i = 0; i < configProperties.length(); i++ ) {
            for( unsigned int j = 0; j < propertySet.length(); j++ ) {
                if( strcmp(configProperties[i].id, propertySet[i].id) == 0 ) {
                    configProperties[i].value = propertySet[i].value;
                }
            }
        }
    } // end if-else
}

void PacketDecoder_i::configure(const CF::Properties& props)
throw (CORBA::SystemException,
    CF::PropertySet::InvalidConfiguration,
    CF::PropertySet::PartialConfiguration)
{
    DEBUG(3, PacketDecoder, "configure() invoked")

    static int init = 0;
    if( init == 0 ) {
        if( props.length() == 0 ) {
            std::cout << "configure called with invalid props.length - " << props.length() << std::endl;
            return;
        }
        propertySet.length(props.length());
        for( unsigned int j=0; j < props.length(); j++ ) {
            propertySet[j].id = CORBA::string_dup(props[j].id);
            propertySet[j].value = props[j].value;
        }
        init = 1;
    }

    std::cout << "props length : " << props.length() << std::endl;

    for ( unsigned int i = 0; i <props.length(); i++)
    {
        std::cout << "Property id : " << props[i].id << std::endl;

        if (strcmp(props[i].id, "DCE:659f6164-1017-11df-baab-001aa089d644") == 0)
        {
        }
    }
}

void PacketDecoder_i::ProcessData()
{
    DEBUG(3, PacketDecoder, "ProcessData() invoked")

    PortTypes::CharSequence decodedDataOut;


    PortTypes::CharSequence *encodedDataIn(NULL);
    CORBA::UShort encodedDataIn_length;

    while(continue_processing())
    {
        portCodedDataIn->getData(encodedDataIn);

        encodedDataIn_length = encodedDataIn->length();

        // check input length and re-create packetizer (if necessary)
        if (enc_msg_len != encodedDataIn_length) {
            // re-compute message lengths
            enc_msg_len = encodedDataIn_length;

            dec_msg_len = packetizer_compute_dec_msg_len(enc_msg_len,
                                                         check,
                                                         fec_inner,
                                                         fec_outer);

            // re-create packetizer object
            p = packetizer_recreate(p,dec_msg_len,check,fec_inner,fec_outer);

            // validate that encoded message lengths match
            unsigned int n = packetizer_get_enc_msg_len(p);

            if (n != enc_msg_len) {
                fprintf(stderr,"error: PacketDecoder cannot decode packet with this configuration");
                fprintf(stderr,"    (received %u encoded bytes, expected %u)\n", enc_msg_len, n);
                fprintf(stderr,"    check       : %10s\n", crc_scheme_str[check][0]);
                fprintf(stderr,"    fec_inner   : %10s\n", fec_scheme_str[fec_inner][0]);
                fprintf(stderr,"    fec_outer   : %10s\n", fec_scheme_str[fec_outer][0]);
                fprintf(stderr,"    dec msg len : %4u\n", dec_msg_len);
                fprintf(stderr,"    enc msg len : %4u\n", enc_msg_len);
                throw(0);
            }

        }

        // create buffers (not efficient to do every time)
        // TODO : allocate buffers internally, realloc only when necessary
        unsigned char dec_msg[dec_msg_len];
        unsigned char enc_msg[enc_msg_len];

        // copy input to buffer
        for (unsigned int i=0; i<enc_msg_len; i++)
            enc_msg[i] = (*encodedDataIn)[i];
        portCodedDataIn->bufferEmptied();

        // decode the packet
        packetizer_decode(p, enc_msg, dec_msg);

        // copy result to output buffer
        decodedDataOut.length(dec_msg_len);
        for (unsigned int i=0; i<dec_msg_len; i++)
            decodedDataOut[i] = dec_msg[i];

        // push decoded data packet
        portDecodedDataOut->pushPacket(decodedDataOut);
    }
}

bool PacketDecoder_i::continue_processing()
{
    omni_mutex_lock l(processing_mutex);
    return thread_started;
}