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 "a2dp_codec_api.h"
28 #include "osi/include/time.h"
29 
30 // Loads the A2DP SBC encoder.
31 // Return true on success, otherwise false.
32 bool A2DP_LoadEncoderSbc(void);
33 
34 // Unloads the A2DP SBC encoder.
35 void A2DP_UnloadEncoderSbc(void);
36 
37 // Initialize the A2DP SBC encoder.
38 // |p_peer_params| contains the A2DP peer information
39 // The current A2DP codec config is in |a2dp_codec_config|.
40 // |read_callback| is the callback for reading the input audio data.
41 // |enqueue_callback| is the callback for enqueueing the encoded audio data.
42 void a2dp_sbc_encoder_init(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 SBC encoder.
48 void a2dp_sbc_encoder_cleanup(void);
49 
50 // Reset the feeding for the A2DP SBC encoder.
51 void a2dp_sbc_feeding_reset(void);
52 
53 // Flush the feeding for the A2DP SBC encoder.
54 void a2dp_sbc_feeding_flush(void);
55 
56 // Get the A2DP SBC encoder interval (in milliseconds).
57 period_ms_t a2dp_sbc_get_encoder_interval_ms(void);
58 
59 // Prepare and send A2DP SBC encoded frames.
60 // |timestamp_us| is the current timestamp (in microseconds).
61 void a2dp_sbc_send_frames(uint64_t timestamp_us);
62 
63 // Get SBC bitrate
64 // Returns |uint32_t| bitrate in bits per second
65 uint32_t a2dp_sbc_get_bitrate();
66 #endif  // A2DP_SBC_ENCODER_H
67