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add JACK backend support for MIDI option discovery

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This commit is contained in:
Paul Davis 2013-10-10 12:59:11 -04:00
parent 2308291e59
commit 1bd04f8bf3
4 changed files with 78 additions and 0 deletions
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15
libs/backends/jack/jack_audiobackend.cc
View file

@ -490,6 +490,8 @@ JACKAudioBackend::setup_jack_startup_command ()
options.realtime = true;
options.ports_max = 2048;
ARDOUR::set_midi_option (options, _target_midi_option);
/* this must always be true for any server instance we start ourselves
*/
@ -1110,3 +1112,16 @@ JACKAudioBackend::launch_control_app ()
args.push_back (appname);
Glib::spawn_async ("", args, Glib::SPAWN_SEARCH_PATH);
}
vector<string>
JACKAudioBackend::enumerate_midi_options () const
{
return ARDOUR::enumerate_midi_options ();
}
int
JACKAudioBackend::set_midi_option (const string& opt)
{
_target_midi_option = opt;
return 0;
}

4
libs/backends/jack/jack_audiobackend.h
View file

@ -149,6 +149,9 @@ class JACKAudioBackend : public AudioBackend {
/* MIDI */
std::vector<std::string> enumerate_midi_options () const;
int set_midi_option (const std::string&);
int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index);
int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
uint32_t get_midi_event_count (void* port_buffer);
@ -237,6 +240,7 @@ class JACKAudioBackend : public AudioBackend {
uint32_t _target_systemic_output_latency;
uint32_t _current_sample_rate;
uint32_t _current_buffer_size;
std::string _target_midi_option;
typedef std::set<std::string> DeviceList;
typedef std::map<std::string,DeviceList> DriverDeviceMap;

54
libs/backends/jack/jack_utils.cc
View file

@ -92,6 +92,8 @@ namespace {
const char * const default_device_name = X_("Default");
}
static ARDOUR::MidiOptions midi_options;
std::string
get_none_string ()
{
@ -846,6 +848,9 @@ ARDOUR::get_jack_command_line_string (JackCommandLineOptions& options, string& c
if (options.soft_mode) {
args.push_back ("-s");
}
}
if (options.driver == alsa_driver_name || options.driver == coreaudio_driver_name) {
if (!options.midi_driver.empty() && options.midi_driver != get_none_string ()) {
args.push_back ("-X");
@ -900,3 +905,52 @@ ARDOUR::write_jack_config_file (const std::string& config_file_path, const strin
jackdrc.close ();
return true;
}
vector<string>
ARDOUR::enumerate_midi_options ()
{
if (midi_options.empty()) {
#ifdef HAVE_ALSA
midi_options.push_back (make_pair (_("ALSA raw devices"), alsaraw_midi_driver_name));
midi_options.push_back (make_pair (_("ALSA sequencer"), alsaseq_midi_driver_name));
#endif
#ifdef HAVE_PORTAUDIO
/* Windows folks: what name makes sense here? Are there other
choices as well ?
*/
midi_options.push_back (make_pair (_("Multimedia Extension"), winmme_midi_driver_name));
#endif
#ifdef __APPLE__
midi_options.push_back (make_pair (_("CoreMIDI"), coremidi_midi_driver_name));
#endif
}
vector<string> v;
v.push_back (get_none_string());
for (MidiOptions::const_iterator i = midi_options.begin(); i != midi_options.end(); ++i) {
v.push_back (i->first);
}
return v;
}
int
ARDOUR::set_midi_option (ARDOUR::JackCommandLineOptions& options, const string& opt)
{
if (opt.empty() || opt == get_none_string()) {
options.midi_driver = "";
return 0;
}
for (MidiOptions::const_iterator i = midi_options.begin(); i != midi_options.end(); ++i) {
if (i->first == opt) {
options.midi_driver = i->second;
return 0;
}
}
return -1;
}

5
libs/backends/jack/jack_utils.h
View file

@ -180,6 +180,8 @@ namespace ARDOUR {
*/
bool get_jack_default_server_path (std::string& server_path);
typedef std::vector<std::pair<std::string,std::string> > MidiOptions;
/**
* @return The name of the jack server config file
*/
@ -228,6 +230,9 @@ namespace ARDOUR {
std::string midi_driver;
};
std::vector<std::string> enumerate_midi_options ();
int set_midi_option (ARDOUR::JackCommandLineOptions&, const std::string& opt);
/**
* @return true if able to build a valid command line based on options
*/