AudioCodec Class Reference

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Base class for all audio codecs. More...

#include <audio.h>

Public Members

• virtual size_t Encode (unsigned char *target, unsigned char *source, size_t len)
• virtual size_t Decode (unsigned char *target, unsigned char *source, size_t len)

Detailed Description

The abstract audio codec base class is used to define common inheretance for all audio codec handlers. This allows reference to an effective codec for the current payload format through a pointer as used in the RTPAudio classes.

virtual size_t Encode(unsigned char *target, unsigned char *source, size_t len)

Encode an audio stream in the current format. This normally is used to compress u-law 8bit 8khz audio in derived classes as all higher sampled audio is generally not codec processed. The default codec simply copies the data stream.

Parameters:

source	data to read from.
len	in bytes of original data stream.
target	to write codec converted data.

Returns:

number of bytes after codec or 0 if unsupported sampling.

virtual size_t Decode(unsigned char *target, unsigned char *source, size_t len)

Decode an audio stream in the current payload format. This normally is used to decompress into u-law 8 bit 8khz audio in derived classes as all higher sampled audio is generally not compressed.

Parameters:

source	of encoded audio data.
len	of encoded audio data.
target	for decoded audio data.

Returns:

number of bytes after codec or 0 if unsupported sampling.