mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-06 12:13:49 +08:00
84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef AUDIOSRC_H_
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#define AUDIOSRC_H_
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#include <memory>
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#include <string>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "SDL2/SDL.h"
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#ifdef __cplusplus
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}
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#endif
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#if defined(_WIN32)
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#pragma comment(lib,"SDL2.lib")
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#endif //defined(_WIN32)
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#include "Network/Buffer.h"
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#include "SDLAudioDevice.h"
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class AudioSRCDelegate {
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public:
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virtual ~AudioSRCDelegate() {};
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virtual SDL_AudioFormat getPCMFormat() = 0;
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virtual int getPCMSampleRate() = 0;
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virtual int getPCMChannel() = 0;
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virtual int getPCMData(char *buf, int size) = 0;
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};
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//该类实现pcm的重采样
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class AudioSRC {
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public:
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using Ptr = std::shared_ptr<AudioSRC>;
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AudioSRC(AudioSRCDelegate *);
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virtual ~AudioSRC();
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void setEnableMix(bool flag);
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void setOutputAudioConfig(const SDL_AudioSpec &cfg);
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int getPCMData(char *buf, int size);
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private:
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bool _enabled = true;
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int _buf_size = 0;
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std::shared_ptr<char> _buf;
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AudioSRCDelegate *_delegate = nullptr;
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toolkit::BufferLikeString _target_buf;
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SDL_AudioCVT _audio_cvt;
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};
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class AudioPlayer : public AudioSRC, private AudioSRCDelegate{
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public:
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AudioPlayer();
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~AudioPlayer() override;
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void setup(int sample_rate, int channel, SDL_AudioFormat format);
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void playPCM(const char *data, size_t size);
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private:
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SDL_AudioFormat getPCMFormat() override;
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int getPCMSampleRate() override;
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int getPCMChannel() override;
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int getPCMData(char *buf, int size) override;
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private:
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int _sample_rate, _channel;
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SDL_AudioFormat _format;
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std::mutex _mtx;
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toolkit::BufferLikeString _buffer;
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SDLAudioDevice::Ptr _device;
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};
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#endif /* AUDIOSRC_H_ */
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