Glenn Maynard
a27620a32d
nForce boards). Allow drivers to tell whether specific sample rates are supported (instead of "all or nothing"). Warning: this will break the Windows (and possibly OS X) drivers for a few minutes until I update them.
49 lines
1.0 KiB
C++
49 lines
1.0 KiB
C++
#ifndef ALSA9_HELPERS_H
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#define ALSA9_HELPERS_H
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#define ALSA_PCM_NEW_SW_PARAMS_API
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#include <alsa/asoundlib.h>
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#include "SDL_types.h"
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class Alsa9Buf
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{
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private:
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int channels, samplerate, samplebits;
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int buffersize, last_cursor_pos;
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snd_pcm_sframes_t total_frames;
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snd_pcm_uframes_t xfer_align;
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snd_pcm_t *pcm;
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bool Recover( int r );
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bool SetHWParams();
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static void ErrorHandler(const char *file, int line, const char *function, int err, const char *fmt, ...);
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public:
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static void GetSoundCardDebugInfo();
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enum hw { HW_HARDWARE, HW_SOFTWARE, HW_DONT_CARE };
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/* Call SetSampleRate before you use the sample. */
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Alsa9Buf( hw hardware, int channels );
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~Alsa9Buf();
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int GetNumFramesToFill( int writeahead );
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void Write( const Sint16 *buffer, int frames );
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unsigned FindSampleRate( unsigned rate );
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void Reset();
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void Play();
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void Stop();
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void SetVolume(float vol);
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void SetSampleRate(int hz);
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int GetPosition() const;
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int GetPlayPos() const { return last_cursor_pos; }
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};
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#endif
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