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CS_get_signature
The CS_get_signature function is called to obtain the signature that characterizes
an audio clip.
void CS_get_signature(
CS_Sample_Processor sp, /* pointer to an internal data structure */
CS_Signature sig /* signature array */
);
Parameters
- sp
- Identifies the internal data structure used for indexing this clip. This structure was
created by a call of
CS_create_sample_processor and
a pointer to this structure was passed along with each sample value in successive calls of
CS_process_sample.
- sig
- Identifies an array into which this function will place the signature.
Remarks
The sig parameter must identify an array that is large enough to receive the
signature. The size of a signature is given by CS_SIGNATURE_SIZE (defined in
CS.h) and is 16 bytes.
A signature may be produced for an audio clip of any duration; however, for best
results, the clip should be at least 0.05 seconds in duration.
The contents of a signature must not be altered by the application. The meaning of
the bytes in a signature is proprietary.
Signatures acquired using this function may be compared by calling
CS_compare_signatures.
A color may be derived from a signature by calling
CS_get_color.
This function has no effect if either the sp parameter or the sig parameter
is NULL.
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