mbtk/libmbtk_lib/audio/g711_pcm_convert.h

#ifndef G711_PCM_CONVERT_H_
#define G711_PCM_CONVERT_H_

enum g711type {
    G711ALAW,
    G711ULAW
};

/**
 * @brief pcm data encode to g711 data
 * 
 *  user should be responsible for pCodecbit memmory
 * 
 * @param pCodecBits store g711 encoded data 
 * @param pBuffer pcm raw data
 * @param BufferSize pcm data len
 * @param type g711 data type
 * @return int encode data length
 */
int G711EnCode(char* pCodecBits, char* pBuffer, int BufferSize, enum g711type type);

/**
 * @brief g711 data decode to pcm data
 * 
 * user should be responsible for pRawData memmory
 * 
 * @param pRawData store uncoded pcm data
 * @param pBuffer g711 encoded data
 * @param BufferSize g711 data len
 * @param type g711 data type
 * @return int pcm data len
 */
int G711Decode(char* pRawData, char* pBuffer, int BufferSize, enum g711type type);

/**
 * @brief g711 u-law data and a-law data convert
 * 
 * @param alawdata g711 a-law data
 * @param ulawdata g711 u-lwa data
 * @param datasize input data length
 * @param type target g711 data type
 * @return int sucess:1; failed:0
 */
int G711TypeChange(unsigned char* alawdata, unsigned char* ulawdata, int datasize, enum g711type type);

#endif /* G711_PCM_CONVERT_H_ */