2 * Copyright (C) 2015 Robin Gareus <robin@gareus.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __libbackend_portaudio_pcmio_h__
20 #define __libbackend_portaudio_pcmio_h__
25 #include <boost/shared_ptr.hpp>
29 #include <portaudio.h>
38 int state (void) const { return _state; }
40 enum StandardDevices {
45 bool initialize_pa ();
47 void host_api_list (std::vector<std::string>&);
48 bool set_host_api (const std::string& host_api_name);
49 std::string get_host_api () const { return _host_api_name; }
50 PaHostApiIndex get_host_api_index_from_name (const std::string& name);
52 PaDeviceIndex get_default_input_device ();
53 PaDeviceIndex get_default_output_device ();
56 void input_device_list (std::map<int, std::string> &devices) const;
57 void output_device_list (std::map<int, std::string> &devices) const;
59 int available_sample_rates (int device_id, std::vector<float>& sample_rates);
60 int available_buffer_sizes (int device_id, std::vector<uint32_t>& buffer_sizes);
62 bool get_default_buffer_sizes (int device_id, std::vector<uint32_t>& buffer_sizes);
64 bool get_asio_buffer_properties (int device_id,
65 long& min_size_frames,
66 long& max_size_frames,
67 long& preferred_size_frames,
70 bool get_asio_buffer_sizes (int device_id, std::vector<uint32_t>& buffer_size);
73 std::string control_app_name (int device_id) const;
74 void launch_control_app (int device_id);
83 uint32_t samples_per_period
86 uint32_t n_playback_channels (void) const { return _playback_channels; }
87 uint32_t n_capture_channels (void) const { return _capture_channels; }
89 std::string get_input_channel_name (int device_id, uint32_t channel) const;
90 std::string get_output_channel_name (int device_id, uint32_t channel) const;
92 double sample_rate (void) const { return _cur_sample_rate; }
93 uint32_t capture_latency (void) const { return _cur_input_latency; }
94 uint32_t playback_latency (void) const { return _cur_output_latency; }
95 double stream_time(void) const { if (_stream) return Pa_GetStreamTime (_stream); return 0; }
97 int next_cycle(uint32_t n_samples);
98 int get_capture_channel (uint32_t chn, float *input, uint32_t n_samples);
99 int set_playback_channel (uint32_t chn, const float *input, uint32_t n_samples);
103 void clear_device_lists ();
104 void add_default_devices ();
106 std::string get_host_api_name_from_index (PaHostApiIndex index);
112 uint32_t _capture_channels;
113 uint32_t _playback_channels;
117 float *_input_buffer;
118 float *_output_buffer;
120 double _cur_sample_rate;
121 uint32_t _cur_input_latency;
122 uint32_t _cur_output_latency;
129 paDevice (std::string n, uint32_t i, uint32_t o)
136 std::map<int, paDevice *> _input_devices;
137 std::map<int, paDevice *> _output_devices;
139 PaHostApiIndex _host_api_index;
140 std::string _host_api_name;
146 #endif /* __libbackend_portaudio_pcmio_h__ */