csdb_rx_sampling.cs

/****************************************************************************************************************
//
//   File:
//       csdb_rx_sampling.cs
//
//       Copyright (c) MAX Technologies Inc. 1988-2019, All Rights Reserved.
//             CONFIDENTIAL AND PROPRIETARY INFORMATION WHICH IS THE 
//                         PROPERTY OF MAX TECHNOLOGIES INC. 
//
//    This demo is a basic program for using the MX API sampling services
//    for receiving data. In this example, message selection is used to
//    discriminate data received.
//
//    Hardware Requirements:
//       - MAXT Flex with loopback between first TX and RX CSDB Enhanced channels.
//
*****************************************************************************************************************/

#define LOOPBACK
//#define LOCAL

using System;
using static MAXT.MXFoundation.mxf;
using System.Runtime.InteropServices;
using System.Text;

namespace csdb_example
{
    class csdb_rx_sampling
    {

        const int BUFFER_SIZE = 4096; // 4KB

        const int LABEL = 0x3;
        const int SI = 0;
        const int BLOCKCOUNT = 6;

        public static void Main(string[] args)
        {
            UInt32 rc;
            UInt64 server;
            UInt64 device = 0;
            var module = new UInt64[1];
            var rxChannel = new UInt64[1];
            var txChannel = new UInt64[1];
            UInt64 rxBuffer = 0;
            var txBuffer = new UInt64[2];
            UInt64 count = 0;
            IntPtr hostBuffer = IntPtr.Zero;
            IntPtr txHostBuffer = IntPtr.Zero;
            IntPtr recPtr = IntPtr.Zero;
            UInt64 schedule = 0;
            UInt64 msg = 0;
            UInt64 i, j, dataIndex;
            UInt64 msgsCount, bytesCount;
            var label = new UInt64[] { 0xA5 };
            MXF_SYSTEM_INIT_ATTRIBUTE_UINT64_HANDLER _initHandler = initHandler;
            MXF_CSDB_DATAREC recCsdb = new MXF_CSDB_DATAREC()
            {
                data = new byte[12]
            };
            MXF_CSDB_SAMPREC recSamp = new MXF_CSDB_SAMPREC()
            {
                data = new byte[12]
            };

            // Connects to services and initialize environment
#if LOCAL
            rc = mxfServerConnect("0.0.0.0", "", "", Convert.ToUInt64(false), out server);
#else
            rc = mxfServerConnect("192.168.0.1", "admin", "admin", Convert.ToUInt64(false), out server);
#endif
            if (rc != MAXT_SUCCESS)
            {
                Console.Write("Failed to connect; rc=0x{0:x8}", rc);
                Console.WriteLine();
                Console.WriteLine("Press a key to terminate");
                Console.Read();
                return;
            }

            // Initialize the server
            Console.WriteLine();
            Console.WriteLine("Starting");

            // initialize init callback handler to set IPM-ASYNC-EH first TX and RX channel to CSDB
            rc = mxfSystemInitAttributeUint64CallbackHandler(server, initHandler);

            if (rc == MAXT_SUCCESS)
                rc = mxfSystemInit(server);

            // Get the device handle
            if (rc == MAXT_SUCCESS)
                rc = mxfSystemDeviceGet(server, 0, out device);

            // Get the module handle
            if (rc == MAXT_SUCCESS)
                rc = mxfDeviceModuleAllGet(device, MXF_MODULE_ASYNC_EH, 1, out count, module);

            // Get the first CSDB Protocol RX channel (RX logical #0)
            if (rc == MAXT_SUCCESS)
                rc = mxfModuleChannelAllGet(module[0], MXF_CLASS_CSDB, MXF_SCLASS_RX_CHANNEL, 1, out count, rxChannel);

            // Get the first CSDB Protocol TX channel (TX logical #0)
            if ((rc == MAXT_SUCCESS) && (count != 0))
                rc = mxfModuleChannelAllGet(module[0], MXF_CLASS_CSDB, MXF_SCLASS_TX_CHANNEL, 1, out count, txChannel);

            // If channel not found, return an error
            if ((rc == MAXT_SUCCESS) && (count == 0))
                rc = MAXT_ERROR_NOT_FOUND;

            // Set the channels to low speed
            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(rxChannel[0], KMXF_CSDB_SPEED, 12500);

            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(txChannel[0], KMXF_CSDB_SPEED, 12500);

            // Set the block count to 6
            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(rxChannel[0], KMXF_CSDB_BLOCKCOUNT, BLOCKCOUNT);

            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(txChannel[0], KMXF_CSDB_BLOCKCOUNT, BLOCKCOUNT);

            // Enable loopback
#if LOOPBACK
            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(rxChannel[0], KMXF_CSDB_TX_RX_TEST_LB, VMXF_ENABLE);
#endif

            // Set timebase to 64-bit microseconds
            if (rc == MAXT_SUCCESS)
                rc = mxfSystemTimeBaseSet(server, MXF_TIMEBASE_DEVICE_USEC);

            // Alloc host buffer
            if (rc == MAXT_SUCCESS)
            {
                try
                {
                    hostBuffer = Marshal.AllocHGlobal(BUFFER_SIZE);
                }
                catch (OutOfMemoryException)
                {
                    rc = MAXT_ERROR_MEM;
                }
                try
                {
                    txHostBuffer = Marshal.AllocHGlobal(BUFFER_SIZE);
                }
                catch (OutOfMemoryException)
                {
                    rc = MAXT_ERROR_MEM;
                }
            }

            // Allocate RX sampling buffer
            if (rc == MAXT_SUCCESS)
                rc = mxfRxSamplingBufferAlloc(rxChannel[0], BUFFER_SIZE, out rxBuffer, IntPtr.Zero);

            // Filter out a specific label/si
            if (rc == MAXT_SUCCESS)
                rc = mxfCSDBRxSamplingMsgSelectSet(rxBuffer, MXF_MSG_DESELECT, 1, label);

            // Start sampling
            if (rc == MAXT_SUCCESS)
                rc = mxfRxSamplingStart(rxBuffer);

            if (rc == MAXT_SUCCESS)
                Console.WriteLine("Sampling started");

            // Allocate TX Periodic Update buffer
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicUpdateMsgBufferAlloc(txChannel[0], 0xA5, BUFFER_SIZE, out txBuffer[0], IntPtr.Zero);

            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicUpdateMsgBufferAlloc(txChannel[0], LABEL, BUFFER_SIZE, out txBuffer[1], IntPtr.Zero);

            // Create the periodic scheduler
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleNew(txChannel[0], out schedule);

            // Set scheduling values: Rate=100 ms (.1sec), Phase=0 us
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleMsgAdd(schedule, 100000, 0, out msg);

            // Define the number of buffer for the list and link to it
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleBufferListAdd(msg, 2, 0, txBuffer);

            // Set record for the buffer, will be ignored by sampling
            if (rc == MAXT_SUCCESS)
            {
                recCsdb.timeTag = 0;
                recCsdb.control = 0;
                recCsdb.repeatCount = 1;
                recCsdb.reserved = 0;
                for (i = 0; i < BLOCKCOUNT; i++)
                    recCsdb.data[i] = 0xa5;
                Marshal.StructureToPtr(recCsdb, txHostBuffer, false);
                rc = mxfCSDBTxPeriodicUpdateMsgWrite(txBuffer[0], 1, txHostBuffer);
            }

            // Set a record that will be received by sampling
            if (rc == MAXT_SUCCESS)
            {
                recCsdb.timeTag = 0;
                recCsdb.control = 0;
                recCsdb.repeatCount = 1;
                recCsdb.reserved = 0;
                recCsdb.data[0] = LABEL;
                recCsdb.data[1] = 0x8 | SI;
                for (i = 2; i < BLOCKCOUNT; i++)
                    recCsdb.data[i] = (byte)i;
                Marshal.StructureToPtr(recCsdb, txHostBuffer, false);
                rc = mxfCSDBTxPeriodicUpdateMsgWrite(txBuffer[1], 1, txHostBuffer);
            }

            //  Run the scheduler, update records
            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine("Running periodic transmission, please wait...");

                // Run the schedule now
                rc = mxfTxPeriodicScheduleRun(schedule);
            }

            // Read and display records for 5 seconds
            for (i = 0; (i < 10) && (rc == MAXT_SUCCESS); i++)
            {
                rc = mxfCSDBRxSamplingRead(rxBuffer, MXF_RXSAMPLING_FLAG_DEFAULT, 0, BUFFER_SIZE, out msgsCount, out bytesCount, hostBuffer);
                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine("Read {0} messages", msgsCount);
                    recPtr = hostBuffer;
                    for (j = 0; (rc == MAXT_SUCCESS) && (j < msgsCount); j++)
                    {
                        recSamp = (MXF_CSDB_SAMPREC)Marshal.PtrToStructure(recPtr, typeof(MXF_CSDB_SAMPREC));

                        Console.Write("{0:D2}: Timetag={1:D16}: CSDB data=[ ", j, recSamp.timeTag);
                        for (dataIndex = 0; dataIndex < BLOCKCOUNT; dataIndex++)
                            Console.Write("0x{0:X2} ", recSamp.data[dataIndex]);
                        Console.Write("]\n\r");

                        rc = mxfCSDBNextSamplingRecordPtrGet(recPtr, out recPtr);
                    }
                }

                if (rc != MAXT_SUCCESS)
                    Console.WriteLine("Sampling read failed; rc=0x{0:x8}", rc);
                else
                    mxfSleep(500);
            }

            // Stop transmission
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleFree(schedule);

            // Stop sampling
            if (rc == MAXT_SUCCESS)
                rc = mxfRxSamplingStop(rxBuffer);

            // Catch any previous failing function
            if (rc != MAXT_SUCCESS)
            {
                StringBuilder buffer = new StringBuilder(256);

                if (mxfSystemErrorStringGet(server, rc, 256, buffer) != MAXT_SUCCESS)
                    buffer.Append(string.Format("ERROR # 0x{0:x8}", rc));

                Console.WriteLine(buffer);
            }

            // Terminate
            mxfSystemTerminate(server);
            mxfServerDisconnect(server);

            if (hostBuffer != IntPtr.Zero)
                Marshal.FreeHGlobal(hostBuffer);

            Console.WriteLine();
            Console.WriteLine("Press enter to terminate");
            Console.Read();

            return;
        }

        private static UInt32 initHandler(UInt64 server, UInt64 deviceIndex, UInt64 moduleIndex, UInt64 channelIndex, UInt64 attrib, ref UInt64 value)
        {
            UInt64 device;
            MXF_DEVICE_INFO deviceInfo = new MXF_DEVICE_INFO();
            UInt32 rc;

            if (attrib == KMXF_CHANNEL_CLASS)
            {
                rc = mxfSystemDeviceGet(server, deviceIndex, out device);
                if (rc == MAXT_SUCCESS)
                    rc = mxfDeviceInfoGet(device, out deviceInfo);

                if ((rc == MAXT_SUCCESS) && (deviceInfo.modules[moduleIndex].type == MXF_MODULE_ASYNC_EH))
                {
                    // Sets IPM-ASYNC-EH first TX and RX channel to CSDB
                    if ((channelIndex == 0) || (channelIndex == deviceInfo.modules[moduleIndex].txCount))
                    {
                        value = MXF_CLASS_CSDB;
                        return Convert.ToUInt32(true);
                    }
                }
            }

            return Convert.ToUInt32(false);
        }
    }
}