mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
synced 2025-10-30 21:51:40 +01:00
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Copyright (C) 1999-2012 Broadcom Corporation
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at:
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#ifndef _SBC_IF_H
|
||
|
|
#define _SBC_IF_H
|
||
|
|
|
||
|
|
#define PCM_BUFFER_SIZE 512
|
||
|
|
|
||
|
|
/*
|
||
|
|
SBC_Init - called once for each track played
|
||
|
|
|
||
|
|
pcm_sample_freq - 4000 to 48000
|
||
|
|
channels - 1 mono 2 stereo
|
||
|
|
bits_per_sample - 8 or 16
|
||
|
|
return - 0 sucess
|
||
|
|
*/
|
||
|
|
|
||
|
|
int SBC_init(int pcm_sample_freq, int channels, int bits_per_sample);
|
||
|
|
|
||
|
|
/*
|
||
|
|
SBC_write - called repeatedly with pcm_in pointer
|
||
|
|
increasing by length until track is finished.
|
||
|
|
|
||
|
|
pcm_in - pointer to PCM buffer
|
||
|
|
length - any
|
||
|
|
sbc_out - pointer to SBC output buffer
|
||
|
|
return - number of bytes written to sbc_out
|
||
|
|
*/
|
||
|
|
|
||
|
|
int SBC_write(unsigned char *pcm_in, int length, unsigned char *sbc_out);
|
||
|
|
|
||
|
|
#endif
|