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(const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
42                                    A2dpCodecConfig* a2dp_codec_config,
43                                    a2dp_source_read_callback_t read_callback,
44                                    a2dp_source_enqueue_callback_t enqueue_callback);
45 
46 // Cleanup the A2DP LDAC encoder.
47 void a2dp_vendor_ldac_encoder_cleanup(void);
48 
49 // Reset the feeding for the A2DP LDAC encoder.
50 void a2dp_vendor_ldac_feeding_reset(void);
51 
52 // Flush the feeding for the A2DP LDAC encoder.
53 void a2dp_vendor_ldac_feeding_flush(void);
54 
55 // Get the A2DP LDAC encoder interval (in milliseconds).
56 uint64_t a2dp_vendor_ldac_get_encoder_interval_ms(void);
57 
58 // Get the A2DP LDAC encoded maximum frame size
59 int a2dp_vendor_ldac_get_effective_frame_size();
60 
61 // Prepare and send A2DP LDAC encoded frames.
62 // |timestamp_us| is the current timestamp (in microseconds).
63 void a2dp_vendor_ldac_send_frames(uint64_t timestamp_us);
64 
65 // Set transmit queue length for the A2DP LDAC ABR(Adaptive Bit Rate) mechanism.
66 void a2dp_vendor_ldac_set_transmit_queue_length(size_t transmit_queue_length);
67 
68 #endif  // A2DP_VENDOR_LDAC_ENCODER_H
69