1 /*
2  *
3  * Copyright (C) 2018 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 #include <SDL2/SDL.h>
18 #include <cstdint>
19 
20 namespace cfp {
21 
22 class SDLLib;
23 
24 class SDLAudioDevice {
25  public:
26   SDLAudioDevice(SDLAudioDevice&& other);
27   SDLAudioDevice& operator=(SDLAudioDevice&& other);
28 
29   SDLAudioDevice(const SDLAudioDevice&) = delete;
30   SDLAudioDevice& operator=(const SDLAudioDevice&) = delete;
31 
32   ~SDLAudioDevice();
33 
34   int QueueAudio(const void* data, std::uint32_t len);
35 
36  private:
37   friend SDLLib;
38   explicit SDLAudioDevice(SDL_AudioDeviceID device_id);
39   void close();
40 
41   SDL_AudioDeviceID device_id_{};
42 };
43 
44 class SDLLib {
45  public:
46   SDLLib();
47   ~SDLLib();
48 
49   SDLLib(const SDLLib&) = delete;
50   SDLLib& operator=(const SDLLib&) = delete;
51 
52   SDLAudioDevice OpenAudioDevice(int freq, std::uint8_t num_channels);
53 };
54 
55 }  // namespace cfp
56