Add API to enforce valid device selection.

[ardour.git] / libs / backends / alsa / alsa_audiobackend.h

diff --git a/libs/backends/alsa/alsa_audiobackend.h b/libs/backends/alsa/alsa_audiobackend.h
index 1dca7ec14989f0a410d574ffdf8a41d61dcb5781..bc2620ed9e6ce173c90967eb217c7a9fea5e8669 100644 (file)
--- a/libs/backends/alsa/alsa_audiobackend.h
+++ b/libs/backends/alsa/alsa_audiobackend.h
@@ -30,6 +30,7 @@
 
 #include <boost/shared_ptr.hpp>
 
+#include "pbd/natsort.h"
 #include "ardour/audio_backend.h"
 #include "ardour/dsp_load_calculator.h"
 #include "ardour/system_exec.h"
@@ -70,9 +71,11 @@ class AlsaPort {
                virtual ~AlsaPort ();
 
                const std::string& name () const { return _name; }
+               const std::string& pretty_name () const { return _pretty_name; }
                PortFlags flags () const { return _flags; }
 
                int set_name (const std::string &name) { _name = name; return 0; }
+               int set_pretty_name (const std::string &name) { _pretty_name = name; return 0; }
 
                virtual DataType type () const = 0;
 
@@ -84,7 +87,7 @@ class AlsaPort {
                bool is_connected (const AlsaPort *port) const;
                bool is_physically_connected () const;
 
-               const std::vector<AlsaPort *>& get_connections () const { return _connections; }
+               const std::set<AlsaPort *>& get_connections () const { return _connections; }
 
                int connect (AlsaPort *port);
                int disconnect (AlsaPort *port);
@@ -112,10 +115,11 @@ class AlsaPort {
        private:
                AlsaAudioBackend &_alsa_backend;
                std::string _name;
+               std::string _pretty_name;
                const PortFlags _flags;
                LatencyRange _capture_latency_range;
                LatencyRange _playback_latency_range;
-               std::vector<AlsaPort*> _connections;
+               std::set<AlsaPort*> _connections;
 
                void _connect (AlsaPort* , bool);
                void _disconnect (AlsaPort* , bool);
@@ -168,6 +172,7 @@ class AlsaAudioBackend : public AudioBackend {
                bool is_realtime () const;
 
                bool use_separate_input_and_output_devices () const { return true; }
+               bool match_input_output_devices_or_none () const { return true; }
                bool can_set_period_size () const { return true; }
 
                std::vector<DeviceStatus> enumerate_devices () const;
@@ -184,6 +189,8 @@ class AlsaAudioBackend : public AudioBackend {
                bool can_change_sample_rate_when_running () const;
                bool can_change_buffer_size_when_running () const;
 
+               bool can_change_systemic_latency_when_running () const { return true; }
+
                int set_device_name (const std::string&);
                int set_input_device_name (const std::string&);
                int set_output_device_name (const std::string&);
@@ -262,6 +269,9 @@ class AlsaAudioBackend : public AudioBackend {
                std::string get_port_name (PortHandle) const;
                PortHandle  get_port_by_name (const std::string&) const;
 
+               int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const;
+               int set_port_property (PortHandle, const std::string& key, const std::string& value, const std::string& type);
+
                int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
 
                DataType port_data_type (PortHandle) const;
@@ -393,18 +403,33 @@ class AlsaAudioBackend : public AudioBackend {
                /* port engine */
                PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
                int register_system_audio_ports ();
-               int register_system_midi_ports ();
+               int register_system_midi_ports (const std::string device = "");
                void unregister_ports (bool system_only = false);
 
-               std::vector<AlsaPort *> _ports;
                std::vector<AlsaPort *> _system_inputs;
                std::vector<AlsaPort *> _system_outputs;
                std::vector<AlsaPort *> _system_midi_in;
                std::vector<AlsaPort *> _system_midi_out;
 
+               struct SortByPortName
+               {
+                       bool operator ()(const AlsaPort* lhs, const AlsaPort* rhs) const
+                       {
+                               return PBD::naturally_less (lhs->name ().c_str (), rhs->name ().c_str ());
+                       }
+               };
+
+               typedef std::map<std::string, AlsaPort *> PortMap; // fast lookup in _ports
+               typedef std::set<AlsaPort *, SortByPortName> PortIndex; // fast lookup in _ports
+               PortMap _portmap;
+               PortIndex _ports;
+
                std::vector<AlsaMidiOut *> _rmidi_out;
                std::vector<AlsaMidiIn  *> _rmidi_in;
 
+               unsigned _midi_ins;
+               unsigned _midi_outs;
+
                struct PortConnectData {
                        std::string a;
                        std::string b;
@@ -431,18 +456,20 @@ class AlsaAudioBackend : public AudioBackend {
                }
 
                bool valid_port (PortHandle port) const {
-                       return std::find (_ports.begin (), _ports.end (), (AlsaPort*)port) != _ports.end ();
+                       return std::find (_ports.begin(), _ports.end(), static_cast<AlsaPort*>(port)) != _ports.end ();
                }
 
-               AlsaPort * find_port (const std::string& port_name) const {
-                       for (std::vector<AlsaPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
-                               if ((*it)->name () == port_name) {
-                                       return *it;
-                               }
+               AlsaPort* find_port (const std::string& port_name) const {
+                       PortMap::const_iterator it = _portmap.find (port_name);
+                       if (it == _portmap.end()) {
+                               return NULL;
                        }
-                       return NULL;
+                       return (*it).second;
                }
 
+               void update_systemic_audio_latencies ();
+               void update_systemic_midi_latencies ();
+
 }; // class AlsaAudioBackend
 
 } // namespace