1 /****************************************************************************** 2 * 3 * Copyright (C) 2016 The Android Open Source Project 4 * Copyright (C) 2009-2012 Broadcom Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at: 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************************/ 19 20 #ifndef BTIF_A2DP_SOURCE_H 21 #define BTIF_A2DP_SOURCE_H 22 23 #include <stdbool.h> 24 25 #include "bta_av_api.h" 26 27 // Initialize and startup the A2DP Source module. 28 // This function should be called by the BTIF state machine prior to using the 29 // module. 30 bool btif_a2dp_source_startup(void); 31 32 // Shutdown and cleanup the A2DP Source module. 33 // This function should be called by the BTIF state machine during 34 // graceful shutdown and cleanup. 35 void btif_a2dp_source_shutdown(void); 36 37 // Check whether the A2DP Source media task is running. 38 // Returns true if the A2DP Source media task is running, otherwise false. 39 bool btif_a2dp_source_media_task_is_running(void); 40 41 // Check whether the A2DP Source media task is shutting down. 42 // Returns true if the A2DP Source media task is shutting down. 43 bool btif_a2dp_source_media_task_is_shutting_down(void); 44 45 // Return true if the A2DP Source module is streaming. 46 bool btif_a2dp_source_is_streaming(void); 47 48 // Setup the A2DP Source codec, and prepare the encoder. 49 // This function should be called prior to starting A2DP streaming. 50 void btif_a2dp_source_setup_codec(void); 51 52 // Process a request to start the A2DP audio encoding task. 53 void btif_a2dp_source_start_audio_req(void); 54 55 // Process a request to stop the A2DP audio encoding task. 56 void btif_a2dp_source_stop_audio_req(void); 57 58 // Process a request to update the A2DP audio encoder with user preferred 59 // codec configuration. 60 // |codec_user_config| contains the preferred codec user configuration. 61 void btif_a2dp_source_encoder_user_config_update_req( 62 const btav_a2dp_codec_config_t& codec_user_config); 63 64 // Process a request to update the A2DP audio encoding with new audio 65 // configuration feeding parameters stored in |codec_audio_config|. 66 // The fields that are used are: |codec_audio_config.sample_rate|, 67 // |codec_audio_config.bits_per_sample| and |codec_audio_config.channel_mode|. 68 void btif_a2dp_source_feeding_update_req( 69 const btav_a2dp_codec_config_t& codec_audio_config); 70 71 // Process 'idle' request from the BTIF state machine during initialization. 72 void btif_a2dp_source_on_idle(void); 73 74 // Process 'stop' request from the BTIF state machine to stop A2DP streaming. 75 // |p_av_suspend| is the data associated with the request - see 76 // |tBTA_AV_SUSPEND|. 77 void btif_a2dp_source_on_stopped(tBTA_AV_SUSPEND* p_av_suspend); 78 79 // Process 'suspend' request from the BTIF state machine to suspend A2DP 80 // streaming. 81 // |p_av_suspend| is the data associated with the request - see 82 // |tBTA_AV_SUSPEND|. 83 void btif_a2dp_source_on_suspended(tBTA_AV_SUSPEND* p_av_suspend); 84 85 // Enable/disable discarding of transmitted frames. 86 // If |enable| is true, the discarding is enabled, otherwise is disabled. 87 void btif_a2dp_source_set_tx_flush(bool enable); 88 89 // Get the next A2DP buffer to send. 90 // Returns the next A2DP buffer to send if available, otherwise NULL. 91 BT_HDR* btif_a2dp_source_audio_readbuf(void); 92 93 // Dump debug-related information for the A2DP Source module. 94 // |fd| is the file descriptor to use for writing the ASCII formatted 95 // information. 96 void btif_a2dp_source_debug_dump(int fd); 97 98 // Update the A2DP Source related metrics. 99 // This function should be called before collecting the metrics. 100 void btif_a2dp_source_update_metrics(void); 101 102 #endif /* BTIF_A2DP_SOURCE_H */ 103
