1 /****************************************************************************** 2 * 3 * Copyright (C) 2003-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This is the interface file for advanced audio call-out functions. 22 * 23 ******************************************************************************/ 24 #ifndef BTA_AV_CO_H 25 #define BTA_AV_CO_H 26 27 #include "bta_av_api.h" 28 #include "l2c_api.h" 29 30 /***************************************************************************** 31 * Constants and data types 32 ****************************************************************************/ 33 34 /******************************************************************************* 35 * 36 * Function bta_av_co_audio_init 37 * 38 * Description This callout function is executed by AV when it is 39 * started by calling BTA_AvEnable(). This function can be 40 * used by the phone to initialize audio paths or for other 41 * initialization purposes. 42 * 43 * 44 * Returns Stream codec and content protection capabilities info. 45 * 46 ******************************************************************************/ 47 bool bta_av_co_audio_init(btav_a2dp_codec_index_t codec_index, 48 tAVDT_CFG* p_cfg); 49 50 /******************************************************************************* 51 * 52 * Function bta_av_co_audio_disc_res 53 * 54 * Description This callout function is executed by AV to report the 55 * number of stream end points (SEP) were found during the 56 * AVDT stream discovery process. 57 * 58 * 59 * Returns void. 60 * 61 ******************************************************************************/ 62 void bta_av_co_audio_disc_res(tBTA_AV_HNDL hndl, uint8_t num_seps, 63 uint8_t num_snk, uint8_t num_src, BD_ADDR addr, 64 uint16_t uuid_local); 65 66 /******************************************************************************* 67 * 68 * Function bta_av_co_audio_getconfig 69 * 70 * Description This callout function is executed by AV to retrieve the 71 * desired codec and content protection configuration for the 72 * audio stream. 73 * 74 * 75 * Returns Stream codec and content protection configuration info. 76 * 77 ******************************************************************************/ 78 tA2DP_STATUS bta_av_co_audio_getconfig(tBTA_AV_HNDL hndl, uint8_t* p_codec_info, 79 uint8_t* p_sep_info_idx, uint8_t seid, 80 uint8_t* p_num_protect, 81 uint8_t* p_protect_info); 82 83 /******************************************************************************* 84 * 85 * Function bta_av_co_audio_setconfig 86 * 87 * Description This callout function is executed by AV to set the 88 * codec and content protection configuration of the audio 89 * stream. 90 * 91 * 92 * Returns void 93 * 94 ******************************************************************************/ 95 void bta_av_co_audio_setconfig(tBTA_AV_HNDL hndl, const uint8_t* p_codec_info, 96 uint8_t seid, BD_ADDR addr, uint8_t num_protect, 97 const uint8_t* p_protect_info, 98 uint8_t t_local_sep, uint8_t avdt_handle); 99 100 /******************************************************************************* 101 * 102 * Function bta_av_co_audio_open 103 * 104 * Description This function is called by AV when the audio stream 105 * connection is opened. 106 * BTA-AV maintains the MTU of A2DP streams. 107 * If this is the 2nd audio stream, mtu is the smaller of the 2 108 * streams. 109 * 110 * Returns void 111 * 112 ******************************************************************************/ 113 void bta_av_co_audio_open(tBTA_AV_HNDL hndl, uint16_t mtu); 114 115 /******************************************************************************* 116 * 117 * Function bta_av_co_audio_close 118 * 119 * Description This function is called by AV when the audio stream 120 * connection is closed. 121 * BTA-AV maintains the MTU of A2DP streams. 122 * When one stream is closed and no other audio stream is open, 123 * mtu is reported as 0. 124 * Otherwise, the MTU remains open is reported. 125 * 126 * Returns void 127 * 128 ******************************************************************************/ 129 void bta_av_co_audio_close(tBTA_AV_HNDL hndl); 130 131 /******************************************************************************* 132 * 133 * Function bta_av_co_audio_start 134 * 135 * Description This function is called by AV when the audio streaming data 136 * transfer is started. 137 * 138 * 139 * Returns void 140 * 141 ******************************************************************************/ 142 void bta_av_co_audio_start(tBTA_AV_HNDL hndl, uint8_t* p_codec_info, 143 bool* p_no_rtp_hdr); 144 145 /******************************************************************************* 146 * 147 * Function bta_av_co_audio_stop 148 * 149 * Description This function is called by AV when the audio streaming data 150 * transfer is stopped. 151 * 152 * 153 * Returns void 154 * 155 ******************************************************************************/ 156 void bta_av_co_audio_stop(tBTA_AV_HNDL hndl); 157 158 /******************************************************************************* 159 * 160 * Function bta_av_co_audio_src_data_path 161 * 162 * Description This function is called to get the next data buffer from 163 * the audio codec 164 * 165 * Returns NULL if data is not ready. 166 * Otherwise, a buffer (BT_HDR*) containing the audio data. 167 * 168 ******************************************************************************/ 169 void* bta_av_co_audio_src_data_path(const uint8_t* p_codec_info, 170 uint32_t* p_timestamp); 171 172 /******************************************************************************* 173 * 174 * Function bta_av_co_audio_drop 175 * 176 * Description An Audio packet is dropped. . 177 * It's very likely that the connected headset with this handle 178 * is moved far away. The implementation may want to reduce 179 * the encoder bit rate setting to reduce the packet size. 180 * 181 * Returns void 182 * 183 ******************************************************************************/ 184 void bta_av_co_audio_drop(tBTA_AV_HNDL hndl); 185 186 /******************************************************************************* 187 * 188 * Function bta_av_co_audio_delay 189 * 190 * Description This function is called by AV when the audio stream 191 * connection needs to send the initial delay report to the 192 * connected SRC. 193 * 194 * 195 * Returns void 196 * 197 ******************************************************************************/ 198 void bta_av_co_audio_delay(tBTA_AV_HNDL hndl, uint16_t delay); 199 200 /******************************************************************************* 201 * 202 * Function bta_av_co_audio_update_mtu 203 * 204 * Description This function is called by AV when the audio stream 205 * connection MTU needs to be updated. 206 * BTA-AV maintains the MTU of A2DP streams. 207 * If this is the 2nd audio stream, mtu is the smaller of the 2 208 * streams. 209 * 210 * Returns void 211 * 212 ******************************************************************************/ 213 void bta_av_co_audio_update_mtu(tBTA_AV_HNDL hndl, uint16_t mtu); 214 215 #endif /* BTA_AV_CO_H */ 216
