104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/*
|
|
* Copyright (C) 2015 Robin Gareus <robin@gareus.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef __libbackend_portaudio_pcmio_h__
|
|
#define __libbackend_portaudio_pcmio_h__
|
|
|
|
#include <map>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <boost/shared_ptr.hpp>
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <portaudio.h>
|
|
|
|
namespace ARDOUR {
|
|
|
|
class PortAudioIO {
|
|
public:
|
|
PortAudioIO (void);
|
|
~PortAudioIO (void);
|
|
|
|
int state (void) const { return _state; }
|
|
|
|
void discover();
|
|
void device_list (std::map<int, std::string> &devices) const;
|
|
|
|
int available_sample_rates (int device_id, std::vector<float>& sampleRates);
|
|
int available_buffer_sizes (int device_id, std::vector<uint32_t>& sampleRates);
|
|
|
|
|
|
void pcm_stop (void);
|
|
int pcm_start (void);
|
|
|
|
int pcm_setup (
|
|
int device_input,
|
|
int device_output,
|
|
double sample_rate,
|
|
uint32_t samples_per_period
|
|
);
|
|
|
|
uint32_t n_playback_channels (void) const { return _playback_channels; }
|
|
uint32_t n_capture_channels (void) const { return _capture_channels; }
|
|
|
|
double sample_rate (void) const { return _cur_sample_rate; }
|
|
uint32_t capture_latency (void) const { return _cur_input_latency; }
|
|
uint32_t playback_latency (void) const { return _cur_output_latency; }
|
|
double stream_time(void) const { if (_stream) return Pa_GetStreamTime (_stream); return 0; }
|
|
|
|
int next_cycle(uint32_t n_samples);
|
|
int get_capture_channel (uint32_t chn, float *input, uint32_t n_samples);
|
|
int set_playback_channel (uint32_t chn, const float *input, uint32_t n_samples);
|
|
|
|
private:
|
|
int _state;
|
|
bool _initialized;
|
|
|
|
uint32_t _capture_channels;
|
|
uint32_t _playback_channels;
|
|
|
|
PaStream *_stream;
|
|
|
|
float *_input_buffer;
|
|
float *_output_buffer;
|
|
|
|
double _cur_sample_rate;
|
|
uint32_t _cur_input_latency;
|
|
uint32_t _cur_output_latency;
|
|
|
|
|
|
struct paDevice {
|
|
std::string name;
|
|
uint32_t n_inputs;
|
|
uint32_t n_outputs;
|
|
|
|
paDevice (std::string n, uint32_t i, uint32_t o)
|
|
: name (n)
|
|
, n_inputs (i)
|
|
, n_outputs (o)
|
|
{}
|
|
};
|
|
|
|
std::map<int, paDevice *> _devices;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
#endif /* __libbackend_portaudio_pcmio_h__ */
|