| /****************************************************************************** |
| * |
| * Copyright (C) 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 |
