audioalsa.h

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#ifndef AUDIOALSA_H
#define AUDIOALSA_H

#include "arraylist.h"
#include "audiodevice.h"

#ifdef HAVE_ALSA
#include <alsa/asoundlib.h>

class AudioALSA : public AudioLowLevel
{
public:
        AudioALSA(AudioDevice *device);
        ~AudioALSA();

        static void list_devices(ArrayList<char*> *devices, int pcm_title = 0);
        int open_input();
        int open_output();
        int open_duplex();
        int write_buffer(char *buffer, int size);
        int read_buffer(char *buffer, int size);
        int close_all();
        int close_input();
        int64_t device_position();
        int flush_device();
        int interrupt_playback();

private:
        int close_output();
        void translate_name(char *output, char *input);
        snd_pcm_format_t translate_format(int format);
        void set_params(snd_pcm_t *dsp, 
                int channels, 
                int bits,
                int samplerate,
                int samples);
        int create_format(snd_pcm_format_t *format, int bits, int channels, int rate);
        snd_pcm_t* get_output();
        snd_pcm_t* get_input();
        snd_pcm_t *dsp_in, *dsp_out, *dsp_duplex;
        int64_t samples_written;
        Timer *timer;
        int delay;
        Mutex *timer_lock;
        int interrupted;
};

#endif
#endif

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