/****************************************************************************** * Copyright (C) 2016, The Linux Foundation. All rights reserved. * * Not a Contribution *****************************************************************************/ /***************************************************************************** * Copyright (C) 2009-2012 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. * ******************************************************************************/ /***************************************************************************** * * Filename: audio_a2dp_hw.h * * Description: * *****************************************************************************/ #ifndef BT_HOST_IPC_H #define BT_HOST_IPC_H #include "audio_a2dp_hw.h" #include /***************************************************************************** ** Constants & Macros ******************************************************************************/ #define BT_AUDIO_HARDWARE_INTERFACE "libbthost" #define A2DP_CTRL_PATH "/data/misc/bluetooth/.a2dp_ctrl" #define A2DP_DATA_PATH "/data/misc/bluetooth/.a2dp_data" typedef enum { A2DP_CTRL_GET_CODEC_CONFIG = 15, A2DP_CTRL_GET_MULTICAST_STATUS, A2DP_CTRL_GET_CONNECTION_STATUS, } tA2DP_CTRL_EXT_CMD; /* codec specific definitions */ #define CODEC_TYPE_SBC 0x00 #define CODEC_TYPE_AAC 0x02 #define NON_A2DP_CODEC_TYPE 0xFF #define CODEC_OFFSET 3 #define VENDOR_ID_OFFSET 4 #define CODEC_ID_OFFSET (VENDOR_ID_OFFSET + 4) #define CODEC_TYPE_PCM 0x05 #ifndef VENDOR_APTX #define VENDOR_APTX 0x4F #endif #ifndef VENDOR_APTX_HD #define VENDOR_APTX_HD 0xD7 #endif #ifndef VENDOR_APTX_LL #define VENDOR_APTX_LL 0x0A #endif #ifndef APTX_CODEC_ID #define APTX_CODEC_ID 0x01 #endif #ifndef APTX_HD_CODEC_ID #define APTX_HD_CODEC_ID 0x24 #endif #define A2D_SBC_FREQ_MASK 0xF0 #define A2D_SBC_CHN_MASK 0x0F #define A2D_SBC_BLK_MASK 0xF0 #define A2D_SBC_SUBBAND_MASK 0x0C #define A2D_SBC_ALLOC_MASK 0x03 #define A2D_SBC_SAMP_FREQ_16 0x80 /* b7:16 kHz */ #define A2D_SBC_SAMP_FREQ_32 0x40 /* b6:32 kHz */ #define A2D_SBC_SAMP_FREQ_44 0x20 /* b5:44.1kHz */ #define A2D_SBC_SAMP_FREQ_48 0x10 /* b4:48 kHz */ #define A2D_SBC_CH_MD_MONO 0x08 /* b3: mono */ #define A2D_SBC_CH_MD_DUAL 0x04 /* b2: dual */ #define A2D_SBC_CH_MD_STEREO 0x02 /* b1: stereo */ #define A2D_SBC_CH_MD_JOINT 0x01 /* b0: joint stereo */ #define A2D_SBC_BLOCKS_4 0x80 /* 4 blocks */ #define A2D_SBC_BLOCKS_8 0x40 /* 8 blocks */ #define A2D_SBC_BLOCKS_12 0x20 /* 12blocks */ #define A2D_SBC_BLOCKS_16 0x10 /* 16blocks */ #define A2D_SBC_SUBBAND_4 0x08 /* b3: 4 */ #define A2D_SBC_SUBBAND_8 0x04 /* b2: 8 */ #define A2D_SBC_ALLOC_MD_S 0x02 /* b1: SNR */ #define A2D_SBC_ALLOC_MD_L 0x01 /* b0: loundess */ /* APTX bitmask helper */ #define A2D_APTX_SAMP_FREQ_MASK 0xF0 #define A2D_APTX_SAMP_FREQ_48 0x10 #define A2D_APTX_SAMP_FREQ_44 0x20 #define A2D_APTX_CHAN_MASK 0x0F #define A2D_APTX_CHAN_STEREO 0x02 #define A2D_APTX_CHAN_MONO 0x01 #define A2D_AAC_IE_OBJ_TYPE_MSK 0xF0 /* b7-b4 Object Type */ #define A2D_AAC_IE_OBJ_TYPE_MPEG_2_AAC_LC 0x80 /* b7:MPEG-2 AAC LC */ #define A2D_AAC_IE_OBJ_TYPE_MPEG_4_AAC_LC 0x40 /* b7:MPEG-4 AAC LC */ #define A2D_AAC_IE_OBJ_TYPE_MPEG_4_AAC_LTP 0x20 /* b7:MPEG-4 AAC LTP */ #define A2D_AAC_IE_OBJ_TYPE_MPEG_4_AAC_SCA 0x10 /* b7:MPEG-4 AAC SCALABLE */ #define A2D_AAC_IE_CHANNELS_MSK 0x0C #define A2D_AAC_IE_CHANNELS_1 0x08 /* Channel 1 */ #define A2D_AAC_IE_CHANNELS_2 0x04 /* Channel 2 */ #define A2D_AAC_IE_VBR_MSK 0x80 #define A2D_AAC_IE_VBR 0x80 /* supported */ typedef struct { uint8_t codec_type; uint8_t dev_idx; uint16_t sampling_rate; /*44.1khz,48khz*/ uint8_t chn; /*0(Mono),1(Dual),2(Stereo),3(JS)*/ uint8_t blk_len; /*4,8,12,16 */ uint8_t subband; /*4,8*/ uint8_t alloc; /*0(Loudness),1(SNR)*/ uint8_t min_bitpool; /* 2 */ uint8_t max_bitpool; /*53(44.1khz),51 (48khz) */ uint16_t mtu; uint32_t bitrate; }tA2DP_SBC_CODEC; typedef struct { uint8_t codec_type; uint8_t dev_idx; uint32_t vendor_id; uint16_t codec_id; uint16_t sampling_rate; uint8_t chnl; uint8_t cp; uint16_t mtu; uint32_t bitrate; }tA2DP_APTX_CODEC; typedef struct { /** Set to sizeof(bt_host_ipc_interface_t) */ size_t size; void (*a2dp_open_ctrl_path)(struct a2dp_stream_common *common); void (*a2dp_stream_common_init)(struct a2dp_stream_common *common); int (*start_audio_datapath)(struct a2dp_stream_common *common); int (*suspend_audio_datapath)(struct a2dp_stream_common *common, bool standby); int (*stop_audio_datapath)(struct a2dp_stream_common *common); int (*check_a2dp_stream_started)(struct a2dp_stream_common *common); int (*check_a2dp_ready)(struct a2dp_stream_common *common); int (*a2dp_read_audio_config)(struct a2dp_stream_common *common); int (*skt_read)(int fd,void *buf, size_t bytes); int (*skt_write)(int fd,const void *buf, size_t bytes); int (*skt_disconnect)(int fd); int (*a2dp_command)(struct a2dp_stream_common *common,char cmd); int (*audio_stream_open)(void); int (*audio_stream_close)(void); int (*audio_start_stream)(void); int (*audio_stop_stream)(void); int (*audio_suspend_stream)(void); void* (*audio_get_codec_config)(uint8_t *mcast, uint8_t *num_dev, audio_format_t *codec_type); void (*audio_handoff_triggered)(void); void (*clear_a2dpsuspend_flag)(void); void*(*audio_get_next_codec_config)(uint8_t idx, audio_format_t *codec_type); int (*audio_check_a2dp_ready)(void); } bt_host_ipc_interface_t; #endif