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 AAC Encoder
19 //
20 
21 #ifndef A2DP_AAC_ENCODER_H
22 #define A2DP_AAC_ENCODER_H
23 
24 #include "a2dp_codec_api.h"
25 #include "osi/include/time.h"
26 
27 // Loads the A2DP AAC encoder.
28 // Return true on success, otherwise false.
29 bool A2DP_LoadEncoderAac(void);
30 
31 // Unloads the A2DP AAC encoder.
32 void A2DP_UnloadEncoderAac(void);
33 
34 // Initialize the A2DP AAC encoder.
35 // |p_peer_params| contains the A2DP peer information
36 // The current A2DP codec config is in |a2dp_codec_config|.
37 // |read_callback| is the callback for reading the input audio data.
38 // |enqueue_callback| is the callback for enqueueing the encoded audio data.
39 void a2dp_aac_encoder_init(const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
40                            A2dpCodecConfig* a2dp_codec_config,
41                            a2dp_source_read_callback_t read_callback,
42                            a2dp_source_enqueue_callback_t enqueue_callback);
43 
44 // Cleanup the A2DP AAC encoder.
45 void a2dp_aac_encoder_cleanup(void);
46 
47 // Reset the feeding for the A2DP AAC encoder.
48 void a2dp_aac_feeding_reset(void);
49 
50 // Flush the feeding for the A2DP AAC encoder.
51 void a2dp_aac_feeding_flush(void);
52 
53 // Get the A2DP AAC encoder interval (in milliseconds).
54 period_ms_t a2dp_aac_get_encoder_interval_ms(void);
55 
56 // Prepare and send A2DP AAC encoded frames.
57 // |timestamp_us| is the current timestamp (in microseconds).
58 void a2dp_aac_send_frames(uint64_t timestamp_us);
59 
60 #endif  // A2DP_AAC_ENCODER_H
61