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Diffstat (limited to 'libs/backends/dummy/dummy_audiobackend.h')
| -rw-r--r-- | libs/backends/dummy/dummy_audiobackend.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/libs/backends/dummy/dummy_audiobackend.h b/libs/backends/dummy/dummy_audiobackend.h new file mode 100644 index 0000000000..4a6e2ff30b --- /dev/null +++ b/libs/backends/dummy/dummy_audiobackend.h @@ -0,0 +1,169 @@ +/* + * Copyright (C) 2014 Robin Gareus <robin@gareus.org> + * Copyright (C) 2013 Paul Davis + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __libbackend_dummy_audiobackend_h__ +#define __libbackend_dummy_audiobackend_h__ + +#include <string> +#include <vector> +#include <map> +#include <set> + +#include <stdint.h> + +#include "ardour/types.h" +#include "ardour/audio_backend.h" + +namespace ARDOUR { + +class DummyAudioBackend : public AudioBackend { + public: + DummyAudioBackend (AudioEngine& e); + ~DummyAudioBackend (); + + /* AUDIOBACKEND API */ + + std::string name () const; + bool is_realtime () const; + + std::vector<DeviceStatus> enumerate_devices () const; + std::vector<float> available_sample_rates (const std::string& device) const; + std::vector<uint32_t> available_buffer_sizes (const std::string& device) const; + uint32_t available_input_channel_count (const std::string& device) const; + uint32_t available_output_channel_count (const std::string& device) const; + + bool can_change_sample_rate_when_running () const; + bool can_change_buffer_size_when_running () const; + + int set_device_name (const std::string&); + int set_sample_rate (float); + int set_buffer_size (uint32_t); + int set_interleaved (bool yn); + int set_input_channels (uint32_t); + int set_output_channels (uint32_t); + int set_systemic_input_latency (uint32_t); + int set_systemic_output_latency (uint32_t); + + /* Retrieving parameters */ + std::string device_name () const; + float sample_rate () const; + uint32_t buffer_size () const; + bool interleaved () const; + uint32_t input_channels () const; + uint32_t output_channels () const; + uint32_t systemic_input_latency () const; + uint32_t systemic_output_latency () const; + + /* External control app */ + std::string control_app_name () const { return std::string (); } + void launch_control_app () {} + + /* MIDI */ + std::vector<std::string> enumerate_midi_options () const; + int set_midi_option (const std::string&); + std::string midi_option () const; + + /* State Control */ + protected: + int _start (bool for_latency_measurement); + public: + int stop (); + int freewheel (bool); + float dsp_load () const; + size_t raw_buffer_size (DataType t); + + /* Process time */ + pframes_t sample_time (); + pframes_t sample_time_at_cycle_start (); + pframes_t samples_since_cycle_start (); + + int create_process_thread (boost::function<void()> func); + int join_process_threads (); + bool in_process_thread (); + uint32_t process_thread_count (); + + void update_latencies (); + + /* PORTENGINE API */ + + void* private_handle () const; + const std::string& my_name () const; + bool available () const; + uint32_t port_name_size () const; + + int set_port_name (PortHandle, const std::string&); + std::string get_port_name (PortHandle) const; + PortHandle get_port_by_name (const std::string&) const; + + int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const; + + DataType port_data_type (PortHandle) const; + + PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags); + void unregister_port (PortHandle); + + int connect (const std::string& src, const std::string& dst); + int disconnect (const std::string& src, const std::string& dst); + int connect (PortHandle, const std::string&); + int disconnect (PortHandle, const std::string&); + int disconnect_all (PortHandle); + + bool connected (PortHandle, bool process_callback_safe); + bool connected_to (PortHandle, const std::string&, bool process_callback_safe); + bool physically_connected (PortHandle, bool process_callback_safe); + int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe); + + /* MIDI */ + 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); + void midi_clear (void* port_buffer); + + /* Monitoring */ + + bool can_monitor_input () const; + int request_input_monitoring (PortHandle, bool); + int ensure_input_monitoring (PortHandle, bool); + bool monitoring_input (PortHandle); + + /* Latency management */ + + void set_latency_range (PortHandle, bool for_playback, LatencyRange); + LatencyRange get_latency_range (PortHandle, bool for_playback); + + /* Discovering physical ports */ + + bool port_is_physical (PortHandle) const; + void get_physical_outputs (DataType type, std::vector<std::string>&); + void get_physical_inputs (DataType type, std::vector<std::string>&); + ChanCount n_physical_outputs () const; + ChanCount n_physical_inputs () const; + + /* Getting access to the data buffer for a port */ + + void* get_buffer (PortHandle, pframes_t); + + + private: + std::string _instance_name; +}; // class DummyAudioBackend + +} // namespace + +#endif /* __libbackend_dummy_audiobackend_h__ */ |