You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
164 lines
7.3 KiB
164 lines
7.3 KiB
/******************************************************************************
|
|
*
|
|
* Copyright 2004-2012 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* This is the interface to utility functions for dealing with SBC data
|
|
* frames and codec capabilities.
|
|
*
|
|
******************************************************************************/
|
|
#ifndef A2DP_SBC_UP_SAMPLE_H
|
|
#define A2DP_SBC_UP_SAMPLE_H
|
|
|
|
#include <stdint.h>
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_init_up_sample
|
|
*
|
|
* Description initialize the up sample
|
|
*
|
|
* src_sps: samples per second (source audio data)
|
|
* dst_sps: samples per second (converted audio data)
|
|
* bits: number of bits per pcm sample
|
|
* n_channels: number of channels (i.e. mono(1), stereo(2)...)
|
|
*
|
|
* Returns none
|
|
*
|
|
******************************************************************************/
|
|
void a2dp_sbc_init_up_sample(uint32_t src_sps, uint32_t dst_sps, uint8_t bits,
|
|
uint8_t n_channels);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_up_sample
|
|
*
|
|
* Description Given the source (p_src) audio data and
|
|
* source speed (src_sps, samples per second),
|
|
* This function converts it to audio data in the desired
|
|
* format
|
|
*
|
|
* p_src: the data buffer that holds the source audio data
|
|
* p_dst: the data buffer to hold the converted audio data
|
|
* src_samples: The number of source samples (number of bytes)
|
|
* dst_samples: The size of p_dst (number of bytes)
|
|
*
|
|
* Note: An AE reported an issue with this function.
|
|
* When called with a2dp_sbc_up_sample(src, uint8_array_dst..)
|
|
* the byte before uint8_array_dst may get overwritten.
|
|
* Using uint16_array_dst avoids the problem.
|
|
* This issue is related to endian-ness and is hard to resolve
|
|
* in a generic manner.
|
|
* **************** Please use uint16 array as dst.
|
|
*
|
|
* Returns The number of bytes used in p_dst
|
|
* The number of bytes used in p_src (in *p_ret)
|
|
*
|
|
******************************************************************************/
|
|
int a2dp_sbc_up_sample(void* p_src, void* p_dst, uint32_t src_samples,
|
|
uint32_t dst_samples, uint32_t* p_ret);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_up_sample_16s (16bits-stereo)
|
|
*
|
|
* Description Given the source (p_src) audio data and
|
|
* source speed (src_sps, samples per second),
|
|
* This function converts it to audio data in the desired
|
|
* format
|
|
*
|
|
* p_src: the data buffer that holds the source audio data
|
|
* p_dst: the data buffer to hold the converted audio data
|
|
* src_samples: The number of source samples (in uint of 4
|
|
* bytes)
|
|
* dst_samples: The size of p_dst (in uint of 4 bytes)
|
|
*
|
|
* Returns The number of bytes used in p_dst
|
|
* The number of bytes used in p_src (in *p_ret)
|
|
*
|
|
******************************************************************************/
|
|
int a2dp_sbc_up_sample_16s(void* p_src, void* p_dst, uint32_t src_samples,
|
|
uint32_t dst_samples, uint32_t* p_ret);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_up_sample_16m (16bits-mono)
|
|
*
|
|
* Description Given the source (p_src) audio data and
|
|
* source speed (src_sps, samples per second),
|
|
* This function converts it to audio data in the desired
|
|
* format
|
|
*
|
|
* p_src: the data buffer that holds the source audio data
|
|
* p_dst: the data buffer to hold the converted audio data
|
|
* src_samples: The number of source samples (in uint of 2
|
|
* bytes)
|
|
* dst_samples: The size of p_dst (in uint of 2 bytes)
|
|
*
|
|
* Returns The number of bytes used in p_dst
|
|
* The number of bytes used in p_src (in *p_ret)
|
|
*
|
|
******************************************************************************/
|
|
int a2dp_sbc_up_sample_16m(void* p_src, void* p_dst, uint32_t src_samples,
|
|
uint32_t dst_samples, uint32_t* p_ret);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_up_sample_8s (8bits-stereo)
|
|
*
|
|
* Description Given the source (p_src) audio data and
|
|
* source speed (src_sps, samples per second),
|
|
* This function converts it to audio data in the desired
|
|
* format
|
|
*
|
|
* p_src: the data buffer that holds the source audio data
|
|
* p_dst: the data buffer to hold the converted audio data
|
|
* src_samples: The number of source samples (in uint of 2
|
|
* bytes)
|
|
* dst_samples: The size of p_dst (in uint of 2 bytes)
|
|
*
|
|
* Returns The number of bytes used in p_dst
|
|
* The number of bytes used in p_src (in *p_ret)
|
|
*
|
|
******************************************************************************/
|
|
int a2dp_sbc_up_sample_8s(void* p_src, void* p_dst, uint32_t src_samples,
|
|
uint32_t dst_samples, uint32_t* p_ret);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function a2dp_sbc_up_sample_8m (8bits-mono)
|
|
*
|
|
* Description Given the source (p_src) audio data and
|
|
* source speed (src_sps, samples per second),
|
|
* This function converts it to audio data in the desired
|
|
* format
|
|
*
|
|
* p_src: the data buffer that holds the source audio data
|
|
* p_dst: the data buffer to hold the converted audio data
|
|
* src_samples: The number of source samples (number of bytes)
|
|
* dst_samples: The size of p_dst (number of bytes)
|
|
*
|
|
* Returns The number of bytes used in p_dst
|
|
* The number of bytes used in p_src (in *p_ret)
|
|
*
|
|
******************************************************************************/
|
|
int a2dp_sbc_up_sample_8m(void* p_src, void* p_dst, uint32_t src_samples,
|
|
uint32_t dst_samples, uint32_t* p_ret);
|
|
|
|
#endif // A2DP_SBC_UP_SAMPLE_H
|