1 /* 2 * Copyright 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // 18 // Interface to the A2DP LDAC Encoder 19 // 20 21 #ifndef A2DP_VENDOR_LDAC_ENCODER_H 22 #define A2DP_VENDOR_LDAC_ENCODER_H 23 24 #include <stddef.h> 25 #include <stdint.h> 26 27 #include "a2dp_codec_api.h" 28 29 // Loads the A2DP LDAC encoder. 30 // Return true on success, otherwise false. 31 bool A2DP_VendorLoadEncoderLdac(void); 32 33 // Unloads the A2DP LDAC encoder. 34 void A2DP_VendorUnloadEncoderLdac(void); 35 36 // Initialize the A2DP LDAC encoder. 37 // |p_peer_params| contains the A2DP peer information 38 // The current A2DP codec config is in |a2dp_codec_config|. 39 // |read_callback| is the callback for reading the input audio data. 40 // |enqueue_callback| is the callback for enqueueing the encoded audio data. 41 void a2dp_vendor_ldac_encoder_init( 42 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 43 A2dpCodecConfig* a2dp_codec_config, 44 a2dp_source_read_callback_t read_callback, 45 a2dp_source_enqueue_callback_t enqueue_callback); 46 47 // Cleanup the A2DP LDAC encoder. 48 void a2dp_vendor_ldac_encoder_cleanup(void); 49 50 // Reset the feeding for the A2DP LDAC encoder. 51 void a2dp_vendor_ldac_feeding_reset(void); 52 53 // Flush the feeding for the A2DP LDAC encoder. 54 void a2dp_vendor_ldac_feeding_flush(void); 55 56 // Get the A2DP LDAC encoder interval (in milliseconds). 57 uint64_t a2dp_vendor_ldac_get_encoder_interval_ms(void); 58 59 // Get the A2DP LDAC encoded maximum frame size 60 int a2dp_vendor_ldac_get_effective_frame_size(); 61 62 // Prepare and send A2DP LDAC encoded frames. 63 // |timestamp_us| is the current timestamp (in microseconds). 64 void a2dp_vendor_ldac_send_frames(uint64_t timestamp_us); 65 66 // Set transmit queue length for the A2DP LDAC ABR(Adaptive Bit Rate) mechanism. 67 void a2dp_vendor_ldac_set_transmit_queue_length(size_t transmit_queue_length); 68 69 #endif // A2DP_VENDOR_LDAC_ENCODER_H 70