Programming Information for WiNRADiO G303 Series Receivers

The G303 receivers API is implemented as a single 32-bit library WRG303API.DLL. It provides functions for all communication with all types of G303 receivers. It can be used by any 32-bit application under Windows 98, ME, 2000, XP and Vista and by 64-bit applications under 64-bit Windows XP and Vista. On 64-bit Windows versions there is also support for 32-bit applications but restrictions may be required in multi-threaded applications due to possible race conditions between threads.

Open

Opens a radio device by its serial number to allow you to control the device using the other API functions.

C/C++ declaration

int __stdcall Open(char *ID);

Delphi declaration

function Open(ID: PChar): Integer; stdcall;

Parameters

ID

Radio device serial number that you would like to open. If NULL is specified, a demo receiver will be opened. The serial number is a null-terminated string.

Return Value

Returns a handle to the device that has to be used to call all the other API functions (hRadio). If zero is returned, the specified device doesn't exist or couldn't be opened.

Remarks

If you would like to have more than one application use the same device, you will have to close the device when you have finished using it to allow other applications to access the device. Multiple threads of the same application can access the same device at any time.

See Also

GetRadioList

OpenRadioDevice

Opens a radio device by its index to allow you to control the device using the other API functions.

C/C++ declaration

int __stdcall OpenRadioDevice(int iDeviceNum);

Delphi declaration

function OpenRadioDevice(iDeviceNum: Integer): Integer; stdcall;

Parameters

iDeviceNum

Radio device number that you would like to open from 1 to 255. If zero is specified, it will open the next available device.

Return Value

Returns a handle to a device that has to be used to call all the other API functions (hRadio). If zero is returned, no devices were available to open or the specified device doesn't exist.

Remarks

If you would like to have more than one application use the same device, you will have to close the device when you have finished using it to allow other applications to access the device. Multiple threads of the same application can access the same device at any time.

CloseRadioDevice

Closes a radio device that was previously opened, and allows another program to access the radio device.

C/C++ declaration

BOOL __stdcall CloseRadioDevice(int hRadio);

Delphi declaration

function CloseRadioDevice(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to the radio device to close, returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE, otherwise the return value is FALSE (invalid handle, or has already been closed).

G3GetRadioList

The G3GetRadioList function returns information about all G303 devices that can be opened.

This function is deprecated. Please consider using the new GetRadioList function instead.

C/C++ declaration

size_t __stdcall G3GetRadioList(OLD_RADIO_INFO *lpRadioInfo,size_t BufferSize);

Delphi declaration

function G3GetRadioList(lpRadioInfo: POld_Radio_Info; BufferSize: Integer): Integer; stdcall;

Parameters

lpRadioInfo

The buffer for an array of OLD_RADIO_INFO structures. It will contain an OLD_RADIO_INFO structure for each unalocated G303 device present in the system.

BufferSize

The size of the lpRadioInfo buffer. The function doesn't write all structures if the buffer is too small.

Return Value

The count of unallocated G303 devices present in the system. This value can be greater than the real number of OLD_RADIO_INFO structures written to the buffer if the buffer is too small.

G3GetRadioList2

The G3GetRadioList2 function returns information about all G303 devices that can be opened. It is a more flexible implementation than in G3GetRadioList allowing future additions to the RADIO_INFO structure while the applications would not need updating.

This function is deprecated. Please consider using the new GetRadioList function instead.

C/C++ declaration

size_t __stdcall G3GetRadioList2(RADIO_INFO *lpRadioInfo,size_t BufferSize,size_t *Infosize);

Delphi declaration

function G3GetRadioList2(lpRadioInfo: PRadio_Info; BufferSize: Integer; Infosize: PInteger): Integer; stdcall;

Parameters

lpRadioInfo

The buffer for an array of RADIO_INFO structures. It will contain a RADIO_INFO structure for each unalocated G303 device present in the system.

BufferSize

The size of the lpRadioInfo buffer. The function doesn't write all structures if the buffer is too small.

Infosize

Pointer to an integer value that will be written by G3GetRadioList2 with the size of the structure for each available receiver.

Return Value

The count of unallocated G303 devices present in the system. This value can be greater than the real number of RADIO_INFO structures written to the buffer if the buffer is too small.

GetRadioList

The GetRadioList function returns information about all G303 devices that can be opened. It is a more flexible implementation than G3GetRadioList and G3GetRadioList2 allowing future additions to the RADIO_INFO2 structure while the applications would not need updating. The returned structure content is a lot cleaner than with the older functions and it also includes clean support for 64-bit code.

C/C++ declaration

size_t __stdcall GetRadioList(RADIO_INFO2 *lpRadioInfo,size_t BufferSize,size_t *Infosize);

Parameters

lpRadioInfo

The buffer for an array of RADIO_INFO2 structures. It will contain a RADIO_INFO2 structure for each unalocated G303 device present in the system.

BufferSize

The size of the lpRadioInfo buffer. The function doesn't write all structures if the buffer is too small.

Infosize

Pointer to an integer value that will be written by GetRadioList with the size of the structure for each available receiver.

Return Value

The count of unallocated G303 devices present in the system. This value can be greater than the real number of RADIO_INFO2 structures written to the buffer if the buffer is too small.

See Also

Opening the device example

GetSignalStrengthdBm

The GetSignalStrengthdBm function returns the strength of the radio signal in dBm received by the radio device.

C/C++ declaration

int __stdcall GetSignalStrengthdBm(int hRadio);

Delphi declaration

function GetSignalStrengthdBm(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

The aproximated value of the signal strength in dBm * 10 (i.e. the value is given in tenth of dBm).

Remarks

In order to have valid signal strength values for external receivers connected through USB, the CodecStart function must be called. The signal strength readings are sent to the PC only while the IF input stream is active.

GetRawSignalStrength

The GetRawSignalStrength function returns the "raw" signal strength value. This is made available for compatibility with applications which expect the signal strength value to be from 0 (min signal level) to 255 (max signal level). The formula for this is:

SignalStrength_RAW = 255*(SignalStrength_dBm + 1300)/1000

This means that -130dBm corresponds to 0 and -30dBm corresponds to 255 of "raw" value.

C/C++ declaration

int __stdcall GetRawSignalStrength(int hRadio);

Delphi declaration

function GetRawSignalStrength(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

RAW signal strength in the interval <0,255>.

Remarks

In order to have valid signal strength values for external receivers connected through USB, the CodecStart function must be called. The signal strength readings are sent to the PC only while the IF input stream is active.

GetLastSSdBm

The GetLastSSdBm function returns the last measured strength of the radio signal in dBm. Useful during block scanning.

C/C++ declaration

int __stdcall GetLastSSdBm(int hRadio);

Delphi declaration

function GetLastSSdBm(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

The aproximated value of the signal strength in dBm * 10 (i.e. the value is given in tenths of dBm).

Remarks

In order to have valid signal strength values for external receivers connected through USB, the CodecStart function must be called. The signal strength readings are sent to the PC only while the IF input stream is active.

GetLastRawSS

The GetLastRawSS function returns last measured RAW signal strength value. Useful during block scanning.

C/C++ declaration

int __stdcall GetLastRawSS(int hRadio);

Delphi declaration

function GetLastRawSS(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

RAW signal strength <0,255>.

Remarks

In order to have valid signal strength values for external receivers connected through USB, the CodecStart function must be called. The signal strength readings are sent to the PC only while the IF input stream is active.

GetInternalRSSI

The GetInternalRSSI function returns a combination of the RSSI and AGC values read from the receiver hardware.

C/C++ declaration

DWORD __stdcall GetInternalRSSI(int hRadio);

Delphi declaration

function GetInternalRSSI(hRadio: Integer): DWORD; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

AGC value in the upper 16 bits of the result and RSSI value in the lower 16 bits of the result.

Remarks

In order to have valid signal strength values for external receivers connected through USB, the CodecStart function must be called. The signal strength readings are sent to the PC only while the IF input stream is active.

SetFrequency

The SetFrequency function sets the frequency the device is to be tuned to.

C/C++ declaration

BOOL __stdcall SetFrequency(int hRadio, DWORD dwFreq);

Delphi declaration

function SetFrequency(hRadio: Integer; dwFreq: DWORD): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

dwFreq

Specifies the frequency to tune to receiver to.

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE.

Remarks

The lower and upper limits are specified in the dwMinFreq and dwMaxFreq fields respectively in the RADIO_INFO structure that can be retrieved with the GetInfo or G3GetRadioList function.

See Also

GetFrequency

SetFreqAsync

The SetFreqAsync function starts the sequence of hardware commands that sets the frequency the device is to be tuned to. In order to insure the sequence has been executed and that the hardware is properly tuned, WaitFreqAsync function must be called.

C/C++ declaration

BOOL __stdcall SetFreqAsync(int hRadio, DWORD dwFreq);

Delphi declaration

function SetFreqAsync(hRadio: Integer; dwFreq: DWORD): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

dwFreq

Specifies the frequency to tune to receiver to.

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE.

Remarks

The lower and upper limits are specified in the dwMinFreq and dwMaxFreq fields respectively in the RADIO_INFO structure that can be retrieved with the GetInfo or G3GetRadioList function.

See Also

WaitFreqAsync

WaitFreqAsync

The WaitFreqAsync function waits for the end of a receiver tunning started by a SetFreqAsync call.

C/C++ declaration

BOOL __stdcall WaitFreqAsync(int hRadio);

Delphi declaration

function WaitFreqAsync(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE.

See Also

SetFreqAsync

SetAtten

The SetAtten function activates or deactivates the RF input attenuator. It is used to prevent overloading of the receiver with strong signals.

C/C++ declaration

BOOL __stdcall SetAtten(int hRadio, BOOL fAtten);

Delphi declaration

function SetAtten(hRadio: Integer; fAtten: Bool): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

fAtten

If TRUE, the RF attenuator is on, otherwise if FALSE, the RF attenuator is off (more sensitive).

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE.

See Also

GetAtten

SetPower

The SetPower function switches the device's power on or off. This function can be used to power down the receiver in portable applications to conserve battery power.

C/C++ declaration

BOOL __stdcall SetPower(int hRadio, BOOL fPower);

Delphi declaration

function SetPower(hRadio: Integer; fPower: Bool): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

fPower

If TRUE, the radio's power is on, otherwise if FALSE, the radio's power is off.

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE.

See Also

GetPower

SetAGC

The SetAGC function sets the AGC value for given receiver.

C/C++ declaration

BOOL __stdcall SetAGC(int hRadio, int iAGC);

Delphi declaration

function SetAGC(hRadio: Integer; iAGC: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

iAGC

AGC value <0,3> - off, slow, medium or fast.

Return Value

If the function succeeds, the return value is TRUE, else the return value is FALSE.

See Also

GetAGC

SetIFGain

Sets IFGain value for the specified receiver.

C/C++ declaration

BOOL __stdcall SetIFGain(int hRadio, int iIFGain);

Delphi declaration

function SetIFGain(hRadio: Integer; iIFGain: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

iIFGain

IFGain value <0,100> to be set.

Return Value

If the function succeeds, the return value is TRUE, else the return value is FALSE.

See Also

GetIFGain

SetRefClock

Specifies the reference clock frequency and allows switching between internal and external references.

C/C++ declaration

BOOL __stdcall SetRefClock(int hRadio, DWORD RefClock);

Delphi declaration

function SetRefClock(hRadio: Integer; RefClock: DWORD): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

RefClock

The frequency of the external reference clock. If 0 is specified the internal reference clock is used.

Return Value

If the function succeeds, the return value is TRUE, else the return value is FALSE.

See Also

GetRefClock

GetFrequency

The GetFrequency function retrieves the frequency the receiver is tuned to.

C/C++ declaration

DWORD __stdcall GetFrequency(int hRadio);

Delphi declaration

function GetFrequency(hRadio: Integer): DWORD; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

The current receiver frequency in Hz. If the handle is invalid, 0 is returned instead.

See Also

SetFrequency

GetAtten

The GetAtten function returns the RF input attenuator setting.

C/C++ declaration

BOOL __stdcall GetAtten(int hRadio);

Delphi declaration

function GetAtten(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

GetAtten returns TRUE if the RF attenuator is on, otherwise it returns FALSE if it is off.

See Also

SetAtten

GetPower

The GetPower function returns whether the receiver's power is on or off.

C/C++ declaration

BOOL __stdcall GetPower(int hRadio);

Delphi declaration

function GetPower(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

Returns TRUE if the receiver's power is on, otherwise it returns FALSE if it is off.

See Also

SetPower

GetAGC

The GetAGC function returns current AGC value of radio device.

C/C++ declaration

int __stdcall GetAGC(int hRadio);

Delphi declaration

function GetAGC(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

The current AGC value if successful, otherwise -1 is returned.

See Also

SetAGC

GetIFGain

Retrieves the IFGain value of the receiver.

C/C++ declaration

int __stdcall GetIFGain(int hRadio);

Delphi declaration

function GetIFGain(hRadio: Integer): Integer; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is the IFGain value. Otherwise -1 is returned.

See Also

SetIFGain

GetLock

Retrieves the PLLs lock status.

C/C++ declaration

DWORD __stdcall GetLock(int hRadio, int GetType);

Delphi declaration

function GetLock(hRadio: Integer; GetType: Integer): DWORD; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

GetType

This argument is reserved for future extensions.

Return Value

If the function succeeds, the return value is a combination of the PLLs lock bits. Otherwise 0 is returned.

GetRefClock

Retrieves the current reference clock frequency.

C/C++ declaration

DWORD __stdcall GetRefClock(int hRadio);

Delphi declaration

function GetRefClock(hRadio: Integer): DWORD; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is current reference clock frequency, else the return value is 0xFFFFFFFF.

See Also

SetRefClock

BlockScan

C/C++ declaration

BOOL __stdcall BlockScan(int hRadio,DWORD *Freqs,size_t Count,int StopSquelchRaw,DWORD FeedbackTime,HWND WinHandle,DWORD Msg);

Delphi declaration

function BlockScan(hRadio: Integer; Freqs: PDWORD; Count: Integer; StopSquelchRaw: Integer; FeedbackTime: DWORD; WinHandle: HWND; Msg: DWORD): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Freqs

The array of frequencies to be scanned.

Count

The count of frequencies to be scanned.

StopSquelchRaw

The value of the RAW signal strength at which the scanning should stop.

FeedbackTime

The time interval in ms after which G3 API sends you scanned data.

WinHandle

The window handle to which the scanned data will arrive.

Msg

The constant for window mesage that will bring the scanned data.

Return Value

If the scan started, the return value is TRUE. Otherwise FALSE is returned.

Remarks

Scanned RAW signal strength values are written back to the Freqs buffer. Each frequency in the Freqs buffer is replaced by appropriate RAW value. Parts of this buffer are sent to the appplication after Feedback time interval expires. The block scanning automatically ends when scanned RAW signal strength value rises StopSquelchRaw parameter. The scanned RAW values are sent using window message Msg to the window procedure of the window handle WinHandle with buffer pointer as WParam and buffer length as LParam.

For USB connected receivers the codec streaming must be active for block scanning to be used, otherwise no signal strength information is available and block scanning will always return 255 as raw level and will do just 1 step per second. For more information see CodecStart.

See Also

Block scanning example

StopBlockScan

Stops block scanning if it has been started.

C/C++ declaration

BOOL __stdcall StopBlockScan(int hRadio);

Delphi declaration

function StopBlockScan(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

See Also

Block scanning example

PauseBlockScan

Pauses block scanning, if it has been started.

C/C++ declaration

BOOL __stdcall PauseBlockScan(int hRadio);

Delphi declaration

function PauseBlockScan(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

See Also

Block scanning example

ResumeBlockScan

Resumes block scanning if it has been paused.

C/C++ declaration

BOOL __stdcall ResumeBlockScan(int hRadio);

Delphi declaration

function ResumeBlockScan(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

See Also

Block scanning example

GetInfo

Retrieves the RADIO_INFO2 structure of the receiver.

C/C++ declaration

BOOL __stdcall GetInfo(int hRadio,RADIO_INFO2 *info);

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

info

The pointer to an empty RADIO_INFO2 structure. It must have bLength member initialized to sizeof(RADIO_INFO2).

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

Remarks

For backward compatibility, depending on the value of the bLength field in the passed structure, also OLD_RADIO_INFO and RADIO_INFO structures are supported.

IsBusy

Checks the receiver whether it is ready to accept commands.

C/C++ declaration

BOOL __stdcall IsBusy(int hRadio);

Delphi declaration

function IsBusy(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the receiver is currently busy TRUE is returned. Otherwise the function returns FALSE.

GetPath

Retrieves the system pathname of the receiver.

C/C++ declaration

BOOL __stdcall GetPath(int hRadio, char *Pathname, size_t size);

Delphi declaration

function GetPath(hRadio: Integer; Pathname: PChar; size: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Pathname

Pointer to the buffer that will be filled by the function with the device pathname.

size

The size of the destination buffer that must not be exceeded by the function.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

See Also

GetPath2

GetPath2

Retrieves the system pathname of the receiver.

C/C++ declaration

PSTR __stdcall GetPath2(int hRadio);

Delphi declaration

function GetPath2(hRadio: Integer): PChar; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is a pointer to the receiver pathname. Otherwise NULL is returned.

See Also

GetPath

IsDeviceConnected

Checks if the receiver is still connected to the computer. It is significant only for external receivers while the internal ones will always be reported as connected.

C/C++ declaration

BOOL __stdcall IsDeviceConnected(int hRadio);

Delphi declaration

function IsDeviceConnected(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

SetLEDFlashPattern

Sets the LED flashing pattern for the external receivers to the specified value.

C/C++ declaration

BOOL __stdcall SetLEDFlashPattern(int hRadio,BYTE Pattern);

Delphi declaration

function IsDeviceConnected(hRadio: Integer;Pattern: BYTE): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Pattern

The pattern value as an 8-bit mask for 8 time slots; for each of those slots, a bit value of 1 corresponds to LED turned on and a bit value of 0 corresponds to LED turned off.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

CodecStart

Function for starting the IF streaming input from a USB connected external receiver.

C/C++ declaration

BOOL __stdcall CodecStart(int hRadio,void __stdcall (*CallbackFunc)(void *),void *CallbackTarget);

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

CallbackFunction

Application provided function to be called by the API when there is new data received through the IF stream from the receiver

CallbackTarget

Argument to be passed to the application defined callback function

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

Remarks

The provided callback function is called from a separate thread that waits for codec samples sent by the receiver and code to prevent resources accessing must be included in the application if necessary. If no callback function is provided (NULL is passed for the argument value), the codec streaming is still functional and CodecRead can be periodically called to check for new IF data. The internal IF data queue is large enough for 2 seconds buffering before unread data is overwritten.

Sea Also

IF codec streaming example

CodecStop

Function for stopping the IF streaming input from a USB connected external receiver.

C/C++ declaration

BOOL __stdcall CodecStop(int hRadio);

Delphi declaration

function CodecStop(hRadio: Integer): Bool; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Return Value

If the function succeeds, the return value is TRUE. Otherwise FALSE is returned.

Sea Also

IF codec streaming example

CodecRead

Function for reading IF data received from the receiver.

C/C++ declaration

size_t __stdcall CodecRead(int hRadio,void *Buf,size_t Size);

Delphi declaration

function CodecRead(hRadio: Integer; Buf: Ptr; Size: DWORD): DWORD; stdcall;

Parameters

hRadio

Handle to a radio device that was returned by OpenRadioDevice or Open.

Buf

Destination buffer into which the IF data should be written by the API

Size

The size of the destination buffer

Return Value

The function returns the number of bytes written into the destination buffer. If no data was available it returns 0.

Remarks

There is no guarantee that the data received from the receiver is aligned at sample level and, thus, the application should be able to handle fragmented samples (one byte of the 16-bit samples can be read through a first CodecRead call and the other when new data is received from the receiver).

Sea Also

IF codec streaming example