Codec Engine Application Programming Interface (API)  ce-w08
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Macros | Typedefs | Functions
SPHENC1 - Speech Encoder Interface

Macros

#define SPHENC1_EOK   ISPHENC1_EOK
 
#define SPHENC1_EFAIL   ISPHENC1_EFAIL
 
#define SPHENC1_EUNSUPPORTED   ISPHENC1_EUNSUPPORTED
 
#define SPHENC1_ETIMEOUT   VISA_ETIMEOUT
 Timeout occurred.
#define SPHENC1_FOREVER   VISA_FOREVER
 Special value for timeout parameter indicating never timeout.
#define SPHENC1_VISATYPE   "ti.sdo.ce.speech1.ISPHENC1"
 The VISA type.
#define SPHENC1_STUBSNAME   "SPHENC1_STUBS"
 Name of stub functions. Use this name when registering the SPHENC1_STUBS functions with Engine_addStubFxns.

Typedefs

typedef VISA_Handle SPHENC1_Handle
 Opaque handle to a SPHENC1 codec.
typedef ISPHENC1_Params SPHENC1_Params
 Defines the creation time parameters for all ISPHENC1 instance objects.
typedef ISPHENC1_InArgs SPHENC1_InArgs
 Defines the input arguments for all ISPHENC1 instance process function.
typedef ISPHENC1_OutArgs SPHENC1_OutArgs
 Defines the run time output arguments for all ISPHENC1 instance objects.
typedef ISPHENC1_Cmd SPHENC1_Cmd
 Defines the control commands for the ISPHENC1 module.
typedef ISPHENC1_DynamicParams SPHENC1_DynamicParams
 This structure defines the codec parameters that can be modified after creation via ISPHENC1_Fxns.control().
typedef ISPHENC1_Status SPHENC1_Status
 Defines instance status parameters.

Functions

Int32 SPHENC1_control (SPHENC1_Handle handle, SPHENC1_Cmd id, SPHENC1_DynamicParams *params, SPHENC1_Status *status)
 Execute the control() method in this instance of a speech encoder algorithm.
SPHENC1_Handle SPHENC1_create (Engine_Handle e, String name, SPHENC1_Params *params)
 Create an instance of a speech encoder algorithm.
Void SPHENC1_delete (SPHENC1_Handle handle)
 Delete the instance of a speech encoder algorithm.
Int32 SPHENC1_process (SPHENC1_Handle handle, XDM1_SingleBufDesc *inBuf, XDM1_SingleBufDesc *outBuf, SPHENC1_InArgs *inArgs, SPHENC1_OutArgs *outArgs)
 Execute the process() method in this instance of a speech encoder algorithm.
XDAS_Int32 SPHENC1_processAsync (SPHENC1_Handle handle, XDM1_SingleBufDesc *inBuf, XDM1_SingleBufDesc *outBuf, SPHENC1_InArgs *inArgs, SPHENC1_OutArgs *outArgs)
 Perform asynchronous submission to this instance of a speech encoder algorithm.
XDAS_Int32 SPHENC1_processWait (SPHENC1_Handle handle, XDM1_SingleBufDesc *inBuf, XDM1_SingleBufDesc *outBuf, SPHENC1_InArgs *inArgs, SPHENC1_OutArgs *outArgs, UInt timeout)
 Wait for a return message from a previous invocation of SPHENC1_processAsync() in this instance of an speech encoder algorithm.

Detailed Description

This is the SPHENC1 speech encoder interface. Several of the data types in this API are specified by the XDM ISPHENC1 interface; please see the XDM documentation for those details.


Macro Definition Documentation

#define SPHENC1_EOK   ISPHENC1_EOK

Success.

#define SPHENC1_EFAIL   ISPHENC1_EFAIL

General failure.

#define SPHENC1_EUNSUPPORTED   ISPHENC1_EUNSUPPORTED

Request is unsupported.

#define SPHENC1_ETIMEOUT   VISA_ETIMEOUT

Timeout occurred.

#define SPHENC1_FOREVER   VISA_FOREVER

Special value for timeout parameter indicating never timeout.

#define SPHENC1_VISATYPE   "ti.sdo.ce.speech1.ISPHENC1"

The VISA type.

#define SPHENC1_STUBSNAME   "SPHENC1_STUBS"

Name of stub functions. Use this name when registering the SPHENC1_STUBS functions with Engine_addStubFxns.

See also:
Engine_addStubFxns

Typedef Documentation

Opaque handle to a SPHENC1 codec.

Defines the creation time parameters for all ISPHENC1 instance objects.

@remarks    Some of the fields in this structure are optional and depend
            on the class of speech encoder you're creating.

@remarks This structure may be extended by individual codec implementations allowing customization with vendor specific parameters.  The presence of vendor specific extensions will be detected by the value of the @c size parameter.
Remarks:
The size field must be correctly set by the caller. See https://processors.wiki.ti.com/index.php/Extending_data_structures_in_XDM for more details.

Defines the input arguments for all ISPHENC1 instance process function.

@remarks This structure may be extended by individual codec implementations allowing customization with vendor specific parameters.  The presence of vendor specific extensions will be detected by the value of the @c size parameter.
Remarks:
The size field must be correctly set by the caller. See https://processors.wiki.ti.com/index.php/Extending_data_structures_in_XDM for more details.

Defines the run time output arguments for all ISPHENC1 instance objects.

@remarks This structure may be extended by individual codec implementations allowing customization with vendor specific parameters.  The presence of vendor specific extensions will be detected by the value of the @c size parameter.
Remarks:
The size field must be correctly set by the caller. See https://processors.wiki.ti.com/index.php/Extending_data_structures_in_XDM for more details.
@sa         ISPHENC1_Fxns::process()

Defines the control commands for the ISPHENC1 module.

Remarks:
This ID can be extended in IMOD interface for additional control commands.
See also:
XDM_CmdId
ISPHENC1_Fxns::control()

This structure defines the codec parameters that can be modified after creation via ISPHENC1_Fxns.control().

@remarks    It is not necessary that a given implementation support all
            dynamic parameters to be configurable at run time.  If a
            particular algorithm does not support run-time updates to
            a parameter that the application is attempting to change
            at runtime, it may indicate this as an error.

@remarks This structure may be extended by individual codec implementations allowing customization with vendor specific parameters.  The presence of vendor specific extensions will be detected by the value of the @c size parameter.
Remarks:
The size field must be correctly set by the caller. See https://processors.wiki.ti.com/index.php/Extending_data_structures_in_XDM for more details.

Defines instance status parameters.

@remarks This structure may be extended by individual codec implementations allowing customization with vendor specific parameters.  The presence of vendor specific extensions will be detected by the value of the @c size parameter.
Remarks:
The size field must be correctly set by the caller. See https://processors.wiki.ti.com/index.php/Extending_data_structures_in_XDM for more details.


Function Documentation

Int32 SPHENC1_control ( SPHENC1_Handle  handle,
SPHENC1_Cmd  id,
SPHENC1_DynamicParams params,
SPHENC1_Status status 
)

Execute the control() method in this instance of a speech encoder algorithm.

Parameters:
[in]handleHandle to a created speech encoder instance.
[in]idCommand id for XDM control operation.
[in]paramsRuntime control parameters used for encoding.
[out]statusStatus info upon completion of encode operation.
Precondition:
handle is a valid (non-NULL) speech encoder handle and the speech encoder is in the created state.
Return values:
SPHENC1_EOKSuccess.
SPHENC1_EFAILFailure.
SPHENC1_EUNSUPPORTEDUnsupported request.
Remarks:
This is a blocking call, and will return after the control command has been executed.
If an error is returned, status->extendedError may indicate further details about the error. See SPHENC1_Status::extendedError for details.
See also:
SPHENC1_create()
SPHENC1_delete()
ISPHENC1_Fxns::control()
SPHENC1_Handle SPHENC1_create ( Engine_Handle  e,
String  name,
SPHENC1_Params params 
)

Create an instance of a speech encoder algorithm.

Instance handles must not be concurrently accessed by multiple threads;
each thread must either obtain its own handle (via SPHENC1_create()) or
explicitly serialize access to a shared handle.

@param[in]  e       Handle to an opened engine.
@param[in]  name    String identifier of the type of speech encoder
                    to create.
@param[in]  params  Creation parameters.

@retval     NULL            An error has occurred.
@retval     non-NULL        The handle to the newly created speech encoder
                            instance.

@remarks    @c params is optional.  If it's not supplied, codec-specific
            default params will be used.

@remark     Depending on the configuration of the engine opened, this
            call may create a local or remote instance of the speech1
            encoder.

@remarks In general, @c name is the name of the codec configured by the system integrator. However, an optional "argument string" may be appended to the codec name, to allow the codec's configured priority and/or the heaps where its memory will be allocated, to be overridden.  This optional argument string is of the form <b>":priority"</b>, <b>":priority:flag"</b>, or <b>"::flag"</b>.
Remarks:
priority is the new priority to create the codec with.
The flag must be either 0 or 1, and if 1, all memory allocated for the codec will be in the heap that corresponds to IALG_EXTERNAL. If flag is 0, the memory for the codec will be allocated from the heaps it has requested. For example, if a codec named "mp3" has been configured into the system, setting name to "mp3:4" would cause the codec to be created at priority 4, instead of whatever priority was configured. This feature is useful if more than one instance of the codec are to be created at different priorities.
The flag can be used to prevent the codec from using any internal memory, for example, if it is to be run at the same time as another codec that must use internal memory, and there is insufficient internal memory for both.
@sa         Engine_open()
@sa         SPHENC_delete()
Void SPHENC1_delete ( SPHENC1_Handle  handle)

Delete the instance of a speech encoder algorithm.

Parameters:
[in]handleHandle to a created speech encoder instance.
Remarks:
Depending on the configuration of the engine opened, this call may delete a local or remote instance of the speech encoder.
Precondition:
handle is a valid (non-NULL) handle which is in the created state.
Postcondition:
All resources allocated as part of the SPHENC1_create() operation (memory, DMA channels, etc.) are freed.
See also:
SPHENC1_create()
Int32 SPHENC1_process ( SPHENC1_Handle  handle,
XDM1_SingleBufDesc inBuf,
XDM1_SingleBufDesc outBuf,
SPHENC1_InArgs inArgs,
SPHENC1_OutArgs outArgs 
)

Execute the process() method in this instance of a speech encoder algorithm.

Parameters:
[in]handleHandle to a created speech encoder instance.
[in,out]inBufA buffer descriptor containing an input buffer.
[out]outBufA buffer descriptor containing an output buffer.
[in]inArgsInput Arguments.
[out]outArgsOutput Arguments.
Precondition:
handle is a valid (non-NULL) speech encoder handle and the speech encoder is in the created state.
Return values:
SPHENC1_EOKSuccess.
SPHENC1_EFAILFailure.
SPHENC1_EUNSUPPORTEDUnsupported request.
Remarks:
Since the SPHENC1 encoder contains support for asynchronous buffer submission and retrieval, this API becomes known as synchronous in nature.
This is a blocking call, and will return after the data has been encoded.
The buffers supplied to SPHENC1_process() may have constraints put on them. For example, in dual-processor, shared memory architectures, where the codec is running on a remote processor, the buffers may need to be physically contiguous. Additionally, the remote processor may place restrictions on buffer alignment.
If an error is returned, outArgs->extendedError may indicate further details about the error. See SPHENC1_OutArgs::extendedError for details.
See also:
SPHENC1_create()
SPHENC1_delete()
SPHENC1_control()
SPHENC1_processAsync()
SPHENC1_processWait()
ISPHENC1_Fxns::process() - the reflected algorithm interface, which may contain further usage details.
XDAS_Int32 SPHENC1_processAsync ( SPHENC1_Handle  handle,
XDM1_SingleBufDesc inBuf,
XDM1_SingleBufDesc outBuf,
SPHENC1_InArgs inArgs,
SPHENC1_OutArgs outArgs 
)

Perform asynchronous submission to this instance of a speech encoder algorithm.

Parameters:
[in]handleHandle to a created speech encoder instance.
[in]inBufA buffer descriptor containing the input buffer.
[out]outBufA buffer descriptor containing the output buffer.
[in]inArgsInput Arguments.
[out]outArgsOutput Arguments.
Precondition:
handle is a valid (non-NULL) speech encoder handle and the speech encoder is in the created state.
Return values:
SPHENC1_EOKSuccess.
SPHENC1_EFAILFailure.
SPHENC1_EUNSUPPORTEDUnsupported request.
Remarks:
This API is the asynchronous counterpart to the process() method. It allows for buffer and argument submission without waiting for retrieval. A response is retrieved using the SPHENC1_processWait() API.
The buffers supplied to SPHENC1_processAsync() may have constraints put on them. For example, in dual-processor, shared memory architectures, where the codec is running on a remote processor, the buffers may need to be physically contiguous. Additionally, the remote processor may place restrictions on buffer alignment.
See also:
SPHENC1_create()
SPHENC1_delete()
SPHENC1_control()
SPHENC1_process()
SPHENC1_processWait()
ISPHENC1_Fxns::process()
XDAS_Int32 SPHENC1_processWait ( SPHENC1_Handle  handle,
XDM1_SingleBufDesc inBuf,
XDM1_SingleBufDesc outBuf,
SPHENC1_InArgs inArgs,
SPHENC1_OutArgs outArgs,
UInt  timeout 
)

Wait for a return message from a previous invocation of SPHENC1_processAsync() in this instance of an speech encoder algorithm.

Parameters:
[in]handleHandle to a created speech encoder instance.
[in]inBufA buffer descriptor containing the input buffer.
[out]outBufA buffer descriptor containing the output buffer.
[in]inArgsInput Arguments.
[out]outArgsOutput Arguments.
[in]timeoutAmount of "time" to wait (from 0 -> SPHENC1_FOREVER)
Precondition:
handle is a valid (non-NULL) speech encoder handle and the speech encoder is in the created state.
Return values:
SPHENC1_EOKSuccess.
SPHENC1_EFAILFailure.
SPHENC1_EUNSUPPORTEDUnsupported request.
SPHENC1_ETIMEOUTOperation timed out.
Remarks:
This is a blocking call, and will return after the data has been decoded.
"Polling" is supported by using a timeout of 0. Waiting forever is supported by using a timeout of SPHENC1_FOREVER.
There must have previously been an invocation of the SPHENC1_processAsync() API.
The buffers supplied to SPHENC1_processAsync() may have constraints put on them. For example, in dual-processor, shared memory architectures, where the codec is running on a remote processor, the buffers may need to be physically contiguous. Additionally, the remote processor may place restrictions on buffer alignment.
See also:
SPHENC1_create()
SPHENC1_delete()
SPHENC1_control()
SPHENC1_process()
SPHENC1_processAsync()
Copyright 2013, Texas Instruments Incorporated