bt_a2dp_codecs.h

Go to the documentation of this file.

/****************************************************************************
 * modules/include/bluetooth/bt_a2dp_codecs.h
 *
 *   Copyright 2018 Sony Semiconductor Solutions Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/
 
#ifndef __MODULES_INCLUDE_BLUETOOTH_BT_A2DP_CODECS_H
#define __MODULES_INCLUDE_BLUETOOTH_BT_A2DP_CODECS_H
 
/****************************************************************************
 * Included Files
 ****************************************************************************/
 
#include <stdint.h>
 
/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/
 
#define CODEC_INFO_MAX_LENGTH  20
/****************************************************************************
 * Public Types
 ****************************************************************************/
 
typedef enum
{
    BT_A2DP_SINK_CODEC_SBC             = 1 << 0, 
    BT_A2DP_SINK_CODEC_AAC             = 1 << 2, 
} BT_A2DP_CODEC_TYPE;
 
typedef enum
{
    BT_A2DP_SINK_DIRECT_TRANSFER       = 0x00, 
    BT_A2DP_SINK_PACKET_TRANSFER       = 0x01, 
} BT_A2DP_TRANSFER_TYPE;
 
typedef enum
{
    BT_A2DP_SAMPLE_FREQ_8000HZ,
    BT_A2DP_SAMPLE_FREQ_11000HZ,
    BT_A2DP_SAMPLE_FREQ_12000HZ,
    BT_A2DP_SAMPLE_FREQ_16000HZ,
    BT_A2DP_SAMPLE_FREQ_22050HZ,
    BT_A2DP_SAMPLE_FREQ_24000HZ,
    BT_A2DP_SAMPLE_FREQ_32000HZ,
    BT_A2DP_SAMPLE_FREQ_44100HZ,
    BT_A2DP_SAMPLE_FREQ_48000HZ,
    BT_A2DP_SAMPLE_FREQ_64000HZ,
    BT_A2DP_SAMPLE_FREQ_88000HZ,
    BT_A2DP_SAMPLE_FREQ_96000HZ
} BT_A2DP_SAMPLE_FREQ;
 
typedef enum
{
    BT_A2DP_CHANNEL_MONO,
    BT_A2DP_CHANNEL_DUAL,
    BT_A2DP_CHANNEL_STEREO,
    BT_A2DP_CHANNEL_JOINTSTEREO
} BT_A2DP_CHANNEL_MODE;
 
typedef enum
{
    BT_A2DP_CHANNEL_SNR,
    BT_A2DP_CHANNEL_LOUDNESS
} BT_A2DP_SBC_ALLOC_MODE;
 
typedef struct
{
    BT_A2DP_SAMPLE_FREQ    sampFreq;
    BT_A2DP_CHANNEL_MODE   chMode;
    uint8_t                blockLen;
    uint8_t                numSubbands;
    BT_A2DP_SBC_ALLOC_MODE allocMthd;
    uint8_t                maxBitpool;
    uint8_t                minBitpool;
} BT_A2D_SBC_CODEC_INFO;
 
 
typedef enum
{
    BT_A2DP_MPEG2_AAC_LC,
    BT_A2DP_MPEG4_AAC_LC,
    BT_A2DP_MPEG4_AAC_LTP,
    BT_A2DP_MPEG4_AAC_SSR
} BT_A2DP_AAC_PROFILE;
 
typedef struct
{
    BT_A2DP_AAC_PROFILE  profile;
    BT_A2DP_SAMPLE_FREQ  sampFreq;
    BT_A2DP_CHANNEL_MODE chnl;
    uint8_t              isVbrSupported;
    uint32_t             bitrate;
} BT_A2D_AAC_CODEC_INFO;
 
typedef struct
{
    uint8_t  codecInfoLength;
    uint8_t  codecInfo[CODEC_INFO_MAX_LENGTH];
} BT_A2D_VENDOR_CODEC_INFO;
 
typedef struct
{
    BT_A2DP_CODEC_TYPE codecId;
    union
    {
        BT_A2D_SBC_CODEC_INFO    sbc;
        BT_A2D_AAC_CODEC_INFO    aac;
        BT_A2D_VENDOR_CODEC_INFO vsp;
    } codec_info;
  BT_A2DP_TRANSFER_TYPE transfer_type;
} BT_AUDIO_CODEC_INFO;
 
#endif /* __MODULES_INCLUDE_BLUETOOTH_BT_A2DP_CODECS_H */