2 * Copyright (C) 2015 Robin Gareus <robin@gareus.org>
3 * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include "portaudio_io.h"
32 #include "pbd/compose.h"
34 #include "ardour/audio_backend.h"
38 #define INTERLEAVED_INPUT
39 #define INTERLEAVED_OUTPUT
42 using namespace ARDOUR;
44 PortAudioIO::PortAudioIO ()
45 : _capture_channels (0)
46 , _playback_channels (0)
50 , _cur_sample_rate (0)
51 , _cur_input_latency (0)
52 , _cur_output_latency (0)
57 PortAudioIO::~PortAudioIO ()
62 clear_device_lists ();
64 free (_input_buffer); _input_buffer = NULL;
65 free (_output_buffer); _output_buffer = NULL;
69 PortAudioIO::control_app_name (int device_id) const
72 if (get_current_host_api_type() == paASIO) {
73 // is this used for anything, or just acts as a boolean?
74 return "PortaudioASIO";
82 PortAudioIO::launch_control_app (int device_id)
85 PaError err = PaAsio_ShowControlPanel (device_id, NULL);
87 if (err != paNoError) {
89 DEBUG_AUDIO (string_compose (
90 "Unable to show control panel for device with index %1\n", device_id));
96 PortAudioIO::get_default_sample_rates (std::vector<float>& rates)
98 rates.push_back(8000.0);
99 rates.push_back(22050.0);
100 rates.push_back(24000.0);
101 rates.push_back(44100.0);
102 rates.push_back(48000.0);
103 rates.push_back(88200.0);
104 rates.push_back(96000.0);
105 rates.push_back(176400.0);
106 rates.push_back(192000.0);
110 PortAudioIO::available_sample_rates(int device_id, std::vector<float>& sampleRates)
112 if (!pa_initialize()) return -1;
115 if (get_current_host_api_type() == paASIO) {
116 get_default_sample_rates(sampleRates);
121 // TODO use separate int device_input, int device_output ?!
122 if (device_id == DeviceDefault) {
123 device_id = get_default_input_device ();
127 string_compose ("Querying Samplerates for device %1\n", device_id));
130 const PaDeviceInfo* nfo = Pa_GetDeviceInfo(device_id);
133 PaStreamParameters inputParam;
134 PaStreamParameters outputParam;
136 inputParam.device = device_id;
137 inputParam.channelCount = nfo->maxInputChannels;
138 inputParam.sampleFormat = paFloat32;
139 inputParam.suggestedLatency = 0;
140 inputParam.hostApiSpecificStreamInfo = 0;
142 outputParam.device = device_id;
143 outputParam.channelCount = nfo->maxOutputChannels;
144 outputParam.sampleFormat = paFloat32;
145 outputParam.suggestedLatency = 0;
146 outputParam.hostApiSpecificStreamInfo = 0;
148 std::vector<float> rates;
149 get_default_sample_rates(rates);
151 for (std::vector<float>::const_iterator i = rates.begin(); i != rates.end();
153 if (paFormatIsSupported ==
154 Pa_IsFormatSupported(nfo->maxInputChannels > 0 ? &inputParam : NULL,
155 nfo->maxOutputChannels > 0 ? &outputParam : NULL,
157 sampleRates.push_back(*i);
162 if (sampleRates.empty()) {
163 // fill in something..
164 get_default_sample_rates(sampleRates);
172 PortAudioIO::get_asio_buffer_properties (int device_id,
173 long& min_size_frames,
174 long& max_size_frames,
175 long& preferred_size_frames,
178 // we shouldn't really need all these checks but it shouldn't hurt
179 const PaDeviceInfo* device_info = Pa_GetDeviceInfo(device_id);
182 DEBUG_AUDIO (string_compose (
183 "Unable to get device info from device index %1\n", device_id));
187 if (get_current_host_api_type() != paASIO) {
188 DEBUG_AUDIO (string_compose (
189 "ERROR device_id %1 is not an ASIO device\n", device_id));
193 PaError err = PaAsio_GetAvailableBufferSizes (device_id,
196 &preferred_size_frames,
199 if (err != paNoError) {
200 DEBUG_AUDIO (string_compose (
201 "Unable to determine available buffer sizes for device %1\n", device_id));
208 PortAudioIO::get_asio_buffer_sizes (int device_id, std::vector<uint32_t>& buffer_sizes)
210 long min_size_frames = 0;
211 long max_size_frames = 0;
212 long preferred_size_frames = 0;
213 long granularity = 0;
215 if (!get_asio_buffer_properties (device_id,
218 preferred_size_frames,
220 DEBUG_AUDIO (string_compose (
221 "Unable to get device buffer properties from device index %1\n", device_id));
225 DEBUG_AUDIO (string_compose ("ASIO buffer properties for device %1, "
226 "min_size_frames: %2, max_size_frames: %3, "
227 "preferred_size_frames: %4, granularity: %5\n",
231 preferred_size_frames,
234 #ifdef USE_ASIO_MIN_MAX_BUFFER_SIZES
235 if (min_size_frames >= max_size_frames) {
236 buffer_sizes.push_back (preferred_size_frames);
240 long buffer_size = min_size_frames;
241 while (buffer_size <= max_size_frames) {
242 buffer_sizes.push_back (buffer_size);
244 if (granularity <= 0) {
245 // buffer sizes are power of 2
246 buffer_size = buffer_size * 2;
248 buffer_size += granularity;
252 buffer_sizes.push_back (preferred_size_frames);
259 PortAudioIO::get_default_buffer_sizes(std::vector<uint32_t>& buffer_sizes)
261 buffer_sizes.push_back(64);
262 buffer_sizes.push_back(128);
263 buffer_sizes.push_back(256);
264 buffer_sizes.push_back(512);
265 buffer_sizes.push_back(1024);
266 buffer_sizes.push_back(2048);
267 buffer_sizes.push_back(4096);
271 PortAudioIO::available_buffer_sizes(int device_id, std::vector<uint32_t>& buffer_sizes)
274 if (get_current_host_api_type() == paASIO) {
275 if (get_asio_buffer_sizes (device_id, buffer_sizes)) {
281 get_default_buffer_sizes (buffer_sizes);
287 PortAudioIO::input_device_list(std::map<int, std::string> &devices) const
289 for (std::map<int, paDevice*>::const_iterator i = _input_devices.begin ();
290 i != _input_devices.end ();
292 devices.insert (std::pair<int, std::string>(i->first, Glib::locale_to_utf8(i->second->name)));
297 PortAudioIO::output_device_list(std::map<int, std::string> &devices) const
299 for (std::map<int, paDevice*>::const_iterator i = _output_devices.begin ();
300 i != _output_devices.end ();
302 devices.insert (std::pair<int, std::string>(i->first, Glib::locale_to_utf8(i->second->name)));
307 PortAudioIO::pa_initialized()
309 static bool s_initialized = false;
310 return s_initialized;
314 PortAudioIO::pa_initialize()
316 if (pa_initialized()) return true;
318 PaError err = Pa_Initialize();
319 if (err != paNoError) {
322 pa_initialized() = true;
328 PortAudioIO::pa_deinitialize()
330 if (!pa_initialized()) return true;
332 PaError err = Pa_Terminate();
333 if (err != paNoError) {
336 pa_initialized() = false;
341 PortAudioIO::host_api_list (std::vector<std::string>& api_list)
343 if (!pa_initialize()) return;
345 PaHostApiIndex count = Pa_GetHostApiCount();
347 if (count < 0) return;
349 for (int i = 0; i < count; ++i) {
350 const PaHostApiInfo* info = Pa_GetHostApiInfo (i);
351 if (info->name != NULL) { // possible?
352 api_list.push_back (info->name);
359 PortAudioIO::get_current_host_api_type () const
361 const PaHostApiInfo* info = Pa_GetHostApiInfo (_host_api_index);
364 DEBUG_AUDIO(string_compose(
365 "Unable to determine Host API type from index %1\n", _host_api_index));
366 return (PaHostApiTypeId)0;
373 PortAudioIO::get_host_api_name_from_index (PaHostApiIndex index)
375 std::vector<std::string> api_list;
376 host_api_list(api_list);
377 return api_list[index];
381 PortAudioIO::set_host_api (const std::string& host_api_name)
383 PaHostApiIndex new_index = get_host_api_index_from_name (host_api_name);
386 DEBUG_AUDIO ("Portaudio: Error setting host API\n");
389 _host_api_index = new_index;
390 _host_api_name = host_api_name;
395 PortAudioIO::get_host_api_index_from_name (const std::string& name)
397 if (!pa_initialize()) return -1;
399 PaHostApiIndex count = Pa_GetHostApiCount();
402 DEBUG_AUDIO ("Host API count < 0\n");
406 for (int i = 0; i < count; ++i) {
407 const PaHostApiInfo* info = Pa_GetHostApiInfo (i);
408 if (info != NULL && info->name != NULL) { // possible?
409 if (name == info->name) {
414 DEBUG_AUDIO (string_compose ("Unable to get host API from name: %1\n", name));
420 PortAudioIO::get_default_input_device () const
422 const PaHostApiInfo* info = Pa_GetHostApiInfo (_host_api_index);
423 if (info == NULL) return -1;
424 return info->defaultInputDevice;
428 PortAudioIO::get_default_output_device () const
430 const PaHostApiInfo* info = Pa_GetHostApiInfo (_host_api_index);
431 if (info == NULL) return -1;
432 return info->defaultOutputDevice;
436 PortAudioIO::clear_device_lists ()
438 for (std::map<int, paDevice*>::const_iterator i = _input_devices.begin (); i != _input_devices.end(); ++i) {
441 _input_devices.clear();
443 for (std::map<int, paDevice*>::const_iterator i = _output_devices.begin (); i != _output_devices.end(); ++i) {
446 _output_devices.clear();
450 PortAudioIO::add_none_devices ()
452 _input_devices.insert(std::pair<int, paDevice*>(
453 DeviceNone, new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceNone), 0, 0)));
454 _output_devices.insert(std::pair<int, paDevice*>(
455 DeviceNone, new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceNone), 0, 0)));
459 PortAudioIO::add_default_devices ()
461 const PaHostApiInfo* info = Pa_GetHostApiInfo (_host_api_index);
462 if (info == NULL) return;
464 const PaDeviceInfo* nfo_i = Pa_GetDeviceInfo(get_default_input_device());
465 const PaDeviceInfo* nfo_o = Pa_GetDeviceInfo(get_default_output_device());
466 if (nfo_i && nfo_o) {
467 _input_devices.insert (std::pair<int, paDevice*> (DeviceDefault,
468 new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceDefault),
469 nfo_i->maxInputChannels,
470 nfo_o->maxOutputChannels
472 _output_devices.insert (std::pair<int, paDevice*> (DeviceDefault,
473 new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceDefault),
474 nfo_i->maxInputChannels,
475 nfo_o->maxOutputChannels
481 PortAudioIO::add_devices ()
483 const PaHostApiInfo* info = Pa_GetHostApiInfo (_host_api_index);
484 if (info == NULL) return;
486 int n_devices = Pa_GetDeviceCount();
488 DEBUG_AUDIO (string_compose ("PortAudio found %1 devices\n", n_devices));
490 for (int i = 0 ; i < n_devices; ++i) {
491 const PaDeviceInfo* nfo = Pa_GetDeviceInfo(i);
494 if (nfo->hostApi != _host_api_index) continue;
496 DEBUG_AUDIO (string_compose (" (%1) '%2' '%3' in: %4 (lat: %5 .. %6) out: %7 "
497 "(lat: %8 .. %9) sr:%10\n",
501 nfo->maxInputChannels,
502 nfo->defaultLowInputLatency * 1e3,
503 nfo->defaultHighInputLatency * 1e3,
504 nfo->maxOutputChannels,
505 nfo->defaultLowOutputLatency * 1e3,
506 nfo->defaultHighOutputLatency * 1e3,
507 nfo->defaultSampleRate));
509 if ( nfo->maxInputChannels == 0 && nfo->maxOutputChannels == 0) {
513 if (nfo->maxInputChannels > 0) {
514 _input_devices.insert (std::pair<int, paDevice*> (i, new paDevice(
516 nfo->maxInputChannels,
517 nfo->maxOutputChannels
520 if (nfo->maxOutputChannels > 0) {
521 _output_devices.insert (std::pair<int, paDevice*> (i, new paDevice(
523 nfo->maxInputChannels,
524 nfo->maxOutputChannels
531 PortAudioIO::discover()
533 DEBUG_AUDIO ("PortAudio: discover\n");
534 if (!pa_initialize()) return;
536 clear_device_lists ();
542 PortAudioIO::reset_stream_dependents ()
544 _capture_channels = 0;
545 _playback_channels = 0;
546 _cur_sample_rate = 0;
547 _cur_input_latency = 0;
548 _cur_output_latency = 0;
551 PortAudioIO::ErrorCode
552 PortAudioIO::close_stream()
554 if (!_stream) return NoError;
556 PaError err = Pa_CloseStream (_stream);
558 if (err != paNoError) {
559 return StreamCloseError;
563 reset_stream_dependents();
565 free (_input_buffer); _input_buffer = NULL;
566 free (_output_buffer); _output_buffer = NULL;
570 PortAudioIO::ErrorCode
571 PortAudioIO::start_stream()
573 PaError err = Pa_StartStream (_stream);
575 if (err != paNoError) {
576 return StreamStartError;
582 PortAudioIO::set_sample_rate_and_latency_from_stream ()
584 const PaStreamInfo* nfo_s = Pa_GetStreamInfo(_stream);
590 _cur_sample_rate = nfo_s->sampleRate;
591 _cur_input_latency = nfo_s->inputLatency * _cur_sample_rate;
592 _cur_output_latency = nfo_s->outputLatency * _cur_sample_rate;
594 DEBUG_AUDIO (string_compose ("PA Sample Rate %1 SPS\n", _cur_sample_rate));
596 DEBUG_AUDIO (string_compose ("PA Input Latency %1ms, %2 spl\n",
597 1e3 * nfo_s->inputLatency,
598 _cur_input_latency));
600 DEBUG_AUDIO (string_compose ("PA Output Latency %1ms, %2 spl\n",
601 1e3 * nfo_s->outputLatency,
602 _cur_output_latency));
607 PortAudioIO::allocate_buffers_for_blocking_api (uint32_t samples_per_period)
609 if (_capture_channels > 0) {
611 (float*)malloc(samples_per_period * _capture_channels * sizeof(float));
612 if (!_input_buffer) {
613 DEBUG_AUDIO("PortAudio failed to allocate input buffer.\n");
618 if (_playback_channels > 0) {
620 (float*)calloc(samples_per_period * _playback_channels, sizeof(float));
621 if (!_output_buffer) {
622 DEBUG_AUDIO("PortAudio failed to allocate output buffer.\n");
630 PortAudioIO::get_input_stream_params(int device_input,
631 PaStreamParameters& inputParam) const
633 const PaDeviceInfo *nfo_in = NULL;
635 if (device_input == DeviceDefault) {
636 device_input = get_default_input_device ();
639 if (device_input == DeviceNone) {
643 nfo_in = Pa_GetDeviceInfo(device_input);
645 if (nfo_in == NULL) {
646 DEBUG_AUDIO ("PortAudio Cannot Query Input Device Info\n");
650 inputParam.device = device_input;
651 inputParam.channelCount = nfo_in->maxInputChannels;
652 #ifdef INTERLEAVED_INPUT
653 inputParam.sampleFormat = paFloat32;
655 inputParam.sampleFormat = paFloat32 | paNonInterleaved;
657 inputParam.suggestedLatency = nfo_in->defaultLowInputLatency;
658 inputParam.hostApiSpecificStreamInfo = NULL;
664 PortAudioIO::get_output_stream_params(int device_output,
665 PaStreamParameters& outputParam) const
667 const PaDeviceInfo *nfo_out = NULL;
669 if (device_output == DeviceDefault) {
670 device_output = get_default_output_device ();
673 if (device_output == DeviceNone) {
677 nfo_out = Pa_GetDeviceInfo(device_output);
679 if (nfo_out == NULL) {
680 DEBUG_AUDIO ("PortAudio Cannot Query Output Device Info\n");
684 outputParam.device = device_output;
685 outputParam.channelCount = nfo_out->maxOutputChannels;
686 #ifdef INTERLEAVED_OUTPUT
687 outputParam.sampleFormat = paFloat32;
689 outputParam.sampleFormat = paFloat32 | paNonInterleaved;
691 outputParam.suggestedLatency = nfo_out->defaultLowOutputLatency;
692 outputParam.hostApiSpecificStreamInfo = NULL;
697 PortAudioIO::ErrorCode
698 PortAudioIO::pre_stream_open(int device_input,
699 PaStreamParameters& inputParam,
701 PaStreamParameters& outputParam)
703 if (!pa_initialize()) {
704 DEBUG_AUDIO ("PortAudio Initialization Failed\n");
705 return InitializationError;
708 reset_stream_dependents ();
710 DEBUG_AUDIO (string_compose (
711 "PortAudio Device IDs: i:%1 o:%2\n", device_input, device_output));
713 if (device_input == DeviceNone && device_output == DeviceNone) {
714 return DeviceConfigNotSupportedError;
717 if (get_input_stream_params(device_input, inputParam)) {
718 _capture_channels = inputParam.channelCount;
721 if (get_output_stream_params(device_output, outputParam)) {
722 _playback_channels = outputParam.channelCount;
725 if (_capture_channels == 0 && _playback_channels == 0) {
726 DEBUG_AUDIO("PortAudio no input or output channels.\n");
727 return DeviceConfigNotSupportedError;
730 DEBUG_AUDIO (string_compose ("PortAudio Channels: in:%1 out:%2\n",
732 _playback_channels));
737 PortAudioIO::ErrorCode
738 PortAudioIO::open_blocking_stream(int device_input,
741 uint32_t samples_per_period)
743 PaStreamParameters inputParam;
744 PaStreamParameters outputParam;
746 ErrorCode error_code =
747 pre_stream_open(device_input, inputParam, device_output, outputParam);
749 if (error_code != NoError) return error_code;
751 PaError err = paNoError;
753 err = Pa_OpenStream (
755 _capture_channels > 0 ? &inputParam: NULL,
756 _playback_channels > 0 ? &outputParam: NULL,
762 if (err != paNoError) {
763 DEBUG_AUDIO ("PortAudio failed to start stream.\n");
764 return StreamOpenError;
767 if (!set_sample_rate_and_latency_from_stream()) {
768 DEBUG_AUDIO ("PortAudio failed to query stream information.\n");
770 return StreamOpenError;
773 if (!allocate_buffers_for_blocking_api(samples_per_period)) {
775 return StreamOpenError;
781 PortAudioIO::next_cycle (uint32_t n_samples)
785 err = Pa_IsStreamActive (_stream);
787 // 0: inactive / aborted
792 // TODO, check drift.. process part with larger capacity first.
793 // Pa_GetStreamReadAvailable(_stream) < Pa_GetStreamWriteAvailable(_stream)
795 if (_playback_channels > 0) {
796 err = Pa_WriteStream (_stream, _output_buffer, n_samples);
797 if (err) xrun = true;
800 if (_capture_channels > 0) {
801 err = Pa_ReadStream (_stream, _input_buffer, n_samples);
803 memset (_input_buffer, 0, sizeof(float) * n_samples * _capture_channels);
813 PortAudioIO::get_input_channel_name (int device_id, uint32_t channel) const
816 const char* channel_name;
818 // This will return an error for non-ASIO devices so no need to check if
819 // the device_id corresponds to an ASIO device.
820 PaError err = PaAsio_GetInputChannelName (device_id, channel, &channel_name);
822 if (err == paNoError) {
824 string_compose ("Input channel name for device %1, channel %2 is %3\n",
831 return std::string();
835 PortAudioIO::get_output_channel_name (int device_id, uint32_t channel) const
838 const char* channel_name;
840 PaError err = PaAsio_GetOutputChannelName (device_id, channel, &channel_name);
842 if (err == paNoError) {
844 string_compose ("Output channel name for device %1, channel %2 is %3\n",
851 return std::string();
854 #ifdef INTERLEAVED_INPUT
857 PortAudioIO::get_capture_channel (uint32_t chn, float *input, uint32_t n_samples)
859 assert(chn < _capture_channels);
860 const uint32_t stride = _capture_channels;
861 float *ptr = _input_buffer + chn;
862 while (n_samples-- > 0) {
872 PortAudioIO::get_capture_channel (uint32_t chn, float *input, uint32_t n_samples)
874 assert(chn < _capture_channels);
875 memcpy((void*)input, &(_input_buffer[chn * n_samples]), n_samples * sizeof(float));
882 #ifdef INTERLEAVED_OUTPUT
885 PortAudioIO::set_playback_channel (uint32_t chn, const float *output, uint32_t n_samples)
887 assert(chn < _playback_channels);
888 const uint32_t stride = _playback_channels;
889 float *ptr = _output_buffer + chn;
890 while (n_samples-- > 0) {
900 PortAudioIO::set_playback_channel (uint32_t chn, const float *output, uint32_t n_samples)
902 assert(chn < _playback_channels);
903 memcpy((void*)&(_output_buffer[chn * n_samples]), (void*)output, n_samples * sizeof(float));