sw_codec_lc3_enc_init()

int sw_codec_lc3_enc_init	(	uint16_t	pcm_sample_rate,
		uint8_t	pcm_bit_depth,
		uint16_t	framesize_us,
		uint32_t	enc_bitrate,
		uint8_t	num_channels,
		uint16_t *const	pcm_bytes_req
	)

#include <lc3/include/sw_codec_lc3.h>

Initializes the LC3 encoder and allocates required RAM.

Parameters

[in]	pcm_sample_rate	Sample rate in Hz (typ. 16000 or 48000)
[in]	pcm_bit_depth	Number of bits in sample (typ. 16 or 24)
[in]	framesize_us	Frame size in microseconds
[in]	enc_bitrate	Bitrate of encoded mono stream (bps) (typ. 24000 - 160000). Consult the LC3 doc for legal values.
[in]	num_channels	Number of channels to initialize
[out]	pcm_bytes_req	PCM bytes required to encode a frame.

Note

The return codes from Zephyr and LC3 may overlap.

Returns

0 on success. -EALREADY if already initialized. -EPERM 0 bytes required from PCM sample. Other errors. Refer to LC3 documentation.