diff options
| author | Robin Gareus <robin@gareus.org> | 2015-12-05 13:56:18 +0100 |
|---|---|---|
| committer | Robin Gareus <robin@gareus.org> | 2015-12-05 13:56:18 +0100 |
| commit | 7ad8ad8823b4eb05660a73411c071f4d5083dc1f (patch) | |
| tree | 2391321db44f1d1248cb3d3d2d67da177c0be987 /libs/backends/jack/jack_audiobackend.cc | |
| parent | fed6c9f3adef6e77055f6ef2d767869bbf40d348 (diff) | |
JACK: expose --nperiods option
Diffstat (limited to 'libs/backends/jack/jack_audiobackend.cc')
| -rw-r--r-- | libs/backends/jack/jack_audiobackend.cc | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/libs/backends/jack/jack_audiobackend.cc b/libs/backends/jack/jack_audiobackend.cc index 944fa4111c..32c9f203fa 100644 --- a/libs/backends/jack/jack_audiobackend.cc +++ b/libs/backends/jack/jack_audiobackend.cc @@ -54,6 +54,7 @@ JACKAudioBackend::JACKAudioBackend (AudioEngine& e, AudioBackendInfo& info, boos , _freewheeling (false) , _target_sample_rate (48000) , _target_buffer_size (1024) + , _target_num_periods (2) , _target_interleaved (false) , _target_input_channels (0) , _target_output_channels (0) @@ -203,6 +204,17 @@ JACKAudioBackend::available_buffer_sizes (const string& device) const return s; } +std::vector<uint32_t> +JACKAudioBackend::available_period_sizes (const std::string& driver) const +{ + vector<uint32_t> s; + if (ARDOUR::get_jack_audio_driver_supports_setting_period_count (driver)) { + s.push_back (2); + s.push_back (3); + } + return s; +} + uint32_t JACKAudioBackend::available_input_channel_count (const string& /*device*/) const { @@ -247,6 +259,16 @@ JACKAudioBackend::set_sample_rate (float sr) } int +JACKAudioBackend::set_peridod_size (uint32_t nperiods) +{ + if (!available()) { + _target_num_periods = nperiods; + return 0; + } + return -1; +} + +int JACKAudioBackend::set_buffer_size (uint32_t nframes) { if (!available()) { @@ -381,6 +403,12 @@ JACKAudioBackend::buffer_size () const return _target_buffer_size; } +uint32_t +JACKAudioBackend::period_size () const +{ + return _target_num_periods; +} + bool JACKAudioBackend::interleaved () const { @@ -461,7 +489,7 @@ JACKAudioBackend::setup_jack_startup_command (bool for_latency_measurement) options.driver = _target_driver; options.samplerate = _target_sample_rate; options.period_size = _target_buffer_size; - options.num_periods = 2; + options.num_periods = _target_num_periods; options.input_device = _target_device; options.output_device = _target_device; if (for_latency_measurement) { |