1 /* 2 * Copyright 2021 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 Opus Encoder 19 // 20 21 #ifndef A2DP_VENDOR_OPUS_ENCODER_H 22 #define A2DP_VENDOR_OPUS_ENCODER_H 23 24 #include "a2dp_codec_api.h" 25 26 // Initialize the A2DP Opus encoder. 27 // |p_peer_params| contains the A2DP peer information 28 // The current A2DP codec config is in |a2dp_codec_config|. 29 // |read_callback| is the callback for reading the input audio data. 30 // |enqueue_callback| is the callback for enqueueing the encoded audio data. 31 void a2dp_vendor_opus_encoder_init( 32 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 33 A2dpCodecConfig* a2dp_codec_config, 34 a2dp_source_read_callback_t read_callback, 35 a2dp_source_enqueue_callback_t enqueue_callback); 36 37 // Cleanup the A2DP Opus encoder. 38 void a2dp_vendor_opus_encoder_cleanup(void); 39 40 // Reset the feeding for the A2DP Opus encoder. 41 void a2dp_vendor_opus_feeding_reset(void); 42 43 // Flush the feeding for the A2DP Opus encoder. 44 void a2dp_vendor_opus_feeding_flush(void); 45 46 // Get the A2DP Opus encoder interval (in milliseconds). 47 uint64_t a2dp_vendor_opus_get_encoder_interval_ms(void); 48 49 // Prepare and send A2DP Opus encoded frames. 50 // |timestamp_us| is the current timestamp (in microseconds). 51 void a2dp_vendor_opus_send_frames(uint64_t timestamp_us); 52 53 // Set transmit queue length for the A2DP Opus (Dynamic Bit Rate) mechanism. 54 void a2dp_vendor_opus_set_transmit_queue_length(size_t transmit_queue_length); 55 56 // Get the A2DP Opus encoded maximum frame size 57 int a2dp_vendor_opus_get_effective_frame_size(); 58 59 #endif // A2DP_VENDOR_OPUS_ENCODER_H 60