ZLMediaKit/player/SDLAudioDevice.h
2023-12-09 16:23:51 +08:00

50 lines
1.3 KiB
C++

/*
* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
*
* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
*
* Use of this source code is governed by MIT-like license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
*/
#ifndef SDLAUDIOMIXER_SDLAUDIODEVICE_H_
#define SDLAUDIOMIXER_SDLAUDIODEVICE_H_
#include <mutex>
#include <memory>
#include <stdexcept>
#include <unordered_set>
#define DEFAULT_SAMPLERATE 48000
#define DEFAULT_FORMAT AUDIO_S16
#define DEFAULT_CHANNEL 2
#define DEFAULT_SAMPLES 2048
class AudioSRC;
//该对象主要实现sdl混音与播放
class SDLAudioDevice : public std::enable_shared_from_this<SDLAudioDevice>{
public:
using Ptr = std::shared_ptr<SDLAudioDevice>;
~SDLAudioDevice();
static SDLAudioDevice &Instance();
void addChannel(AudioSRC *chn);
void delChannel(AudioSRC *chn);
private:
SDLAudioDevice();
void onReqPCM(char *stream, int len);
private:
std::shared_ptr<char> _play_buf;
SDL_AudioSpec _audio_config;
std::recursive_mutex _channel_mtx;
std::unordered_set<AudioSRC *> _channels;
};
#endif /* SDLAUDIOMIXER_SDLAUDIODEVICE_H_ */