1 /******************************************************************************
2  *
3  *  Copyright 2016 The Android Open Source Project
4  *  Copyright 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 //
21 // Interface to the A2DP SBC Encoder
22 //
23 
24 #ifndef A2DP_SBC_ENCODER_H
25 #define A2DP_SBC_ENCODER_H
26 
27 #include <stddef.h>
28 #include <stdint.h>
29 
30 #include "a2dp_codec_api.h"
31 
32 // Initialize the A2DP SBC encoder.
33 // |p_peer_params| contains the A2DP peer information
34 // The current A2DP codec config is in |a2dp_codec_config|.
35 // |read_callback| is the callback for reading the input audio data.
36 // |enqueue_callback| is the callback for enqueueing the encoded audio data.
37 void a2dp_sbc_encoder_init(const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
38                            A2dpCodecConfig* a2dp_codec_config,
39                            a2dp_source_read_callback_t read_callback,
40                            a2dp_source_enqueue_callback_t enqueue_callback);
41 
42 // Cleanup the A2DP SBC encoder.
43 void a2dp_sbc_encoder_cleanup(void);
44 
45 // Reset the feeding for the A2DP SBC encoder.
46 void a2dp_sbc_feeding_reset(void);
47 
48 // Flush the feeding for the A2DP SBC encoder.
49 void a2dp_sbc_feeding_flush(void);
50 
51 // Get the A2DP SBC encoder interval (in milliseconds).
52 uint64_t a2dp_sbc_get_encoder_interval_ms(void);
53 
54 // Get the A2DP SBC encoded maximum frame size
55 int a2dp_sbc_get_effective_frame_size();
56 
57 // Prepare and send A2DP SBC encoded frames.
58 // |timestamp_us| is the current timestamp (in microseconds).
59 void a2dp_sbc_send_frames(uint64_t timestamp_us);
60 
61 // Get SBC bitrate
62 // Returns |uint32_t| bitrate in bits per second
63 uint32_t a2dp_sbc_get_bitrate();
64 #endif  // A2DP_SBC_ENCODER_H
65