1 /*
2  * Copyright (C) 2014 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 #ifndef VOICE_H
18 #define VOICE_H
19 
20 #define BASE_SESS_IDX       0
21 #define VOICE_SESS_IDX     (BASE_SESS_IDX)
22 
23 #ifdef MULTI_VOICE_SESSION_ENABLED
24 #define MAX_VOICE_SESSIONS 5
25 #else
26 #define MAX_VOICE_SESSIONS 1
27 #endif
28 
29 #define BASE_CALL_STATE     1
30 #define CALL_INACTIVE       (BASE_CALL_STATE)
31 #define CALL_ACTIVE         (BASE_CALL_STATE + 1)
32 
33 #define VOICE_VSID  0x10C01000
34 
35 #define AUDIO_PARAMETER_KEY_INCALLMUSIC "incall_music_enabled"
36 #define AUDIO_PARAMETER_VALUE_TRUE "true"
37 
38 struct audio_device;
39 struct str_parms;
40 struct stream_in;
41 struct stream_out;
42 typedef int audio_usecase_t;
43 
44 struct call_state {
45     int current;
46     int new;
47 };
48 
49 struct voice_session {
50     struct pcm *pcm_rx;
51     struct pcm *pcm_tx;
52     struct call_state state;
53     uint32_t vsid;
54 };
55 
56 struct voice {
57     struct voice_session session[MAX_VOICE_SESSIONS];
58     int tty_mode;
59     bool hac;
60     bool mic_mute;
61     float volume;
62     bool in_call;
63 };
64 
65 enum {
66     INCALL_REC_NONE = -1,
67     INCALL_REC_UPLINK,
68     INCALL_REC_DOWNLINK,
69     INCALL_REC_UPLINK_AND_DOWNLINK,
70 };
71 
72 int voice_start_usecase(struct audio_device *adev, audio_usecase_t usecase_id);
73 int voice_stop_usecase(struct audio_device *adev, audio_usecase_t usecase_id);
74 
75 int voice_start_call(struct audio_device *adev);
76 int voice_stop_call(struct audio_device *adev);
77 int voice_set_parameters(struct audio_device *adev, struct str_parms *parms);
78 void voice_get_parameters(struct audio_device *adev, struct str_parms *query,
79                           struct str_parms *reply);
80 void voice_init(struct audio_device *adev);
81 bool voice_is_in_call(struct audio_device *adev);
82 bool voice_is_in_call_rec_stream(struct stream_in *in);
83 int voice_set_mic_mute(struct audio_device *dev, bool state);
84 bool voice_get_mic_mute(struct audio_device *dev);
85 int voice_set_volume(struct audio_device *adev, float volume);
86 int voice_check_and_set_incall_rec_usecase(struct audio_device *adev,
87                                            struct stream_in *in);
88 int voice_check_and_set_incall_music_usecase(struct audio_device *adev,
89                                              struct stream_out *out);
90 int voice_check_and_stop_incall_rec_usecase(struct audio_device *adev,
91                                             struct stream_in *in);
92 void voice_update_devices_for_all_voice_usecases(struct audio_device *adev);
93 #endif //VOICE_H
94