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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/* ---------------------------------------------------------------------------
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** This software is in the public domain, furnished "as is", without technical
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** support, and with no warranty, express or implied, as to its usefulness for
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** any purpose.
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**
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** ALSACapture.h
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**
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** V4L2 RTSP streamer
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**
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** ALSA capture overide of V4l2Capture
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**
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** -------------------------------------------------------------------------*/
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#pragma once
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#include <list>
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#include <alsa/asoundlib.h>
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#include "logger.h"
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#include "DeviceInterface.h"
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struct ALSACaptureParameters
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{
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ALSACaptureParameters(const char* devname, const std::list<snd_pcm_format_t> & formatList, unsigned int sampleRate, unsigned int channels, int verbose) :
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m_devName(devname), m_formatList(formatList), m_sampleRate(sampleRate), m_channels(channels), m_verbose(verbose) {
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}
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std::string m_devName;
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std::list<snd_pcm_format_t> m_formatList;
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unsigned int m_sampleRate;
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unsigned int m_channels;
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int m_verbose;
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};
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class ALSACapture : public DeviceInterface
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{
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public:
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static ALSACapture* createNew(const ALSACaptureParameters & params) ;
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virtual ~ALSACapture();
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void close();
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protected:
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ALSACapture(const ALSACaptureParameters & params);
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int configureFormat(snd_pcm_hw_params_t *hw_params);
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public:
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virtual size_t read(char* buffer, size_t bufferSize);
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virtual int getFd();
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virtual unsigned long getBufferSize() { return m_bufferSize; }
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virtual int getSampleRate() { return m_params.m_sampleRate; }
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virtual int getChannels () { return m_params.m_channels; }
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virtual int getAudioFormat () { return m_fmt; }
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virtual std::list<int> getAudioFormatList() { return m_fmtList; }
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private:
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snd_pcm_t* m_pcm;
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unsigned long m_bufferSize;
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unsigned long m_periodSize;
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ALSACaptureParameters m_params;
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snd_pcm_format_t m_fmt;
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std::list<int> m_fmtList;
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};
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