From 587b6e21e7e98f14ce0f8ed0ff8b6d1ec2f7a795 Mon Sep 17 00:00:00 2001 From: Robin Gareus Date: Mon, 28 Apr 2014 23:00:40 +0200 Subject: [PATCH] DummyAudioBackend: port-engine, midi-buffers and the rest of it --- libs/backends/dummy/dummy_audiobackend.cc | 579 +++++++++++++++++++--- libs/backends/dummy/dummy_audiobackend.h | 124 +++++ 2 files changed, 637 insertions(+), 66 deletions(-) diff --git a/libs/backends/dummy/dummy_audiobackend.cc b/libs/backends/dummy/dummy_audiobackend.cc index 8acc08e71c..4d2cdc827f 100644 --- a/libs/backends/dummy/dummy_audiobackend.cc +++ b/libs/backends/dummy/dummy_audiobackend.cc @@ -18,6 +18,8 @@ */ #include +#include + #include "dummy_audiobackend.h" #include "pbd/error.h" #include "i18n.h" @@ -25,6 +27,8 @@ using namespace ARDOUR; static std::string s_instance_name; +size_t DummyAudioBackend::_max_buffer_size = 8192; + DummyAudioBackend::DummyAudioBackend (AudioEngine& e) : AudioBackend (e) , _running (false) @@ -71,8 +75,15 @@ std::vector DummyAudioBackend::available_sample_rates (const std::string&) const { std::vector sr; + sr.push_back (8000.0); + sr.push_back (22050.0); + sr.push_back (24000.0); sr.push_back (44100.0); sr.push_back (48000.0); + sr.push_back (88200.0); + sr.push_back (96000.0); + sr.push_back (176400.0); + sr.push_back (192000.0); return sr; } @@ -80,8 +91,18 @@ std::vector DummyAudioBackend::available_buffer_sizes (const std::string&) const { std::vector bs; + bs.push_back (4); + bs.push_back (8); + bs.push_back (16); + bs.push_back (32); bs.push_back (64); + bs.push_back (128); + bs.push_back (256); + bs.push_back (512); bs.push_back (1024); + bs.push_back (2048); + bs.push_back (4096); + bs.push_back (8192); return bs; } @@ -127,7 +148,9 @@ DummyAudioBackend::set_sample_rate (float sr) int DummyAudioBackend::set_buffer_size (uint32_t bs) { - return -1; + if (bs <= 0 || bs >= _max_buffer_size) { + return -1; + } _audio_buffersize = bs; engine.buffer_size_change (bs); return 0; @@ -141,27 +164,31 @@ DummyAudioBackend::set_interleaved (bool yn) } int -DummyAudioBackend::set_input_channels (uint32_t) +DummyAudioBackend::set_input_channels (uint32_t cc) { - return -1; + _n_inputs = cc; + return 0; } int -DummyAudioBackend::set_output_channels (uint32_t) +DummyAudioBackend::set_output_channels (uint32_t cc) { - return -1; + _n_outputs = cc; + return 0; } int -DummyAudioBackend::set_systemic_input_latency (uint32_t) +DummyAudioBackend::set_systemic_input_latency (uint32_t sl) { - return -1; + _systemic_input_latency = sl; + return 0; } int -DummyAudioBackend::set_systemic_output_latency (uint32_t) +DummyAudioBackend::set_systemic_output_latency (uint32_t sl) { - return -1; + _systemic_output_latency = sl; + return 0; } /* Retrieving parameters */ @@ -192,25 +219,25 @@ DummyAudioBackend::interleaved () const uint32_t DummyAudioBackend::input_channels () const { - return 0; + return _n_inputs; } uint32_t DummyAudioBackend::output_channels () const { - return 0; + return _n_outputs; } uint32_t DummyAudioBackend::systemic_input_latency () const { - return 0; + return _systemic_input_latency; } uint32_t DummyAudioBackend::systemic_output_latency () const { - return 0; + return _systemic_output_latency; } /* MIDI */ @@ -309,6 +336,12 @@ DummyAudioBackend::dsp_load () const size_t DummyAudioBackend::raw_buffer_size (DataType t) { + switch (t) { + case DataType::AUDIO: + return _max_buffer_size * sizeof(Sample); + case DataType::MIDI: + return _max_buffer_size; // XXX not really limited + } return 0; } @@ -435,130 +468,287 @@ DummyAudioBackend::port_name_size () const } int -DummyAudioBackend::set_port_name (PortEngine::PortHandle, const std::string&) +DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name) { - return -1; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg; + return -1; + } + return static_cast(port)->set_name (_instance_name + ":" + name); } std::string -DummyAudioBackend::get_port_name (PortEngine::PortHandle) const +DummyAudioBackend::get_port_name (PortEngine::PortHandle port) const { - return "port:XXX"; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::get_port_name: Invalid Port(s)") << endmsg; + return std::string (); + } + return static_cast(port)->name (); } PortEngine::PortHandle -DummyAudioBackend::get_port_by_name (const std::string&) const +DummyAudioBackend::get_port_by_name (const std::string& name) const { - PortEngine::PortHandle port_handle = 0; - return port_handle; + PortHandle port = (PortHandle) find_port (name); + return port; } int DummyAudioBackend::get_ports ( const std::string& port_name_pattern, DataType type, PortFlags flags, - std::vector&) const + std::vector& port_names) const { - return 0; + int rv = 0; + regex_t port_regex; + bool use_regexp = false; + if (port_name_pattern.size () > 0) { + if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) { + use_regexp = true; + } + } + for (size_t i = 0; i < _ports.size (); ++i) { + DummyPort* port = _ports[i]; + if ((port->type () == type) && (port->flags () & flags)) { + if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) { + port_names.push_back (port->name ()); + ++rv; + } + } + } + if (use_regexp) { + regfree (&port_regex); + } + return rv; } DataType -DummyAudioBackend::port_data_type (PortEngine::PortHandle) const +DummyAudioBackend::port_data_type (PortEngine::PortHandle port) const { - return DataType::AUDIO; + if (!valid_port (port)) { + return DataType::NIL; + } + return static_cast(port)->type (); } PortEngine::PortHandle DummyAudioBackend::register_port ( - const std::string&, - ARDOUR::DataType, - ARDOUR::PortFlags) + const std::string& name, + ARDOUR::DataType type, + ARDOUR::PortFlags flags) { - PortEngine::PortHandle port_handle = 0; - return port_handle; + if (name.size () == 0) { return 0; } + if (flags & IsPhysical) { return 0; } + if (find_port (_instance_name + ":" + name) != NULL) { + PBD::error << _("DummyBackend::register_port: Port already exists.") << endmsg; + return 0; + } + + DummyPort* port = NULL; + switch (type) { + case DataType::AUDIO: + port = new DummyAudioPort (_instance_name + ":" + name, flags); + break; + case DataType::MIDI: + port = new DummyMidiPort (_instance_name + ":" + name, flags); + break; + default: + PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg; + return 0; + } + + _ports.push_back (port); + + return port; } void -DummyAudioBackend::unregister_port (PortEngine::PortHandle) +DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle) { + if (!valid_port (port_handle)) { + PBD::error << _("DummyBackend::unregister_port: Invalid Port.") << endmsg; + } + DummyPort* port = (DummyPort*)port_handle; + std::vector::iterator i = std::find (_ports.begin (), _ports.end (), (DummyPort*)port_handle); + if (i == _ports.end ()) { + PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg; + return; + } + _ports.erase (i); + delete port; } int DummyAudioBackend::connect (const std::string& src, const std::string& dst) { - return -1; + DummyPort* src_port = find_port (src); + DummyPort* dst_port = find_port (dst); + + if (!src_port) { + PBD::error << _("DummyBackend::connect: Invalid Source port:") + << " (" << src <<")" << endmsg; + return -1; + } + if (!dst_port) { + PBD::error << _("DummyBackend::connect: Invalid Destination port:") + << " (" << dst <<")" << endmsg; + return -1; + } + return src_port->connect (dst_port); } int DummyAudioBackend::disconnect (const std::string& src, const std::string& dst) { - return -1; + DummyPort* src_port = find_port (src); + DummyPort* dst_port = find_port (dst); + + if (!src_port || !dst_port) { + PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg; + return -1; + } + return src_port->disconnect (dst_port); } int -DummyAudioBackend::connect (PortEngine::PortHandle, const std::string&) +DummyAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst) { - return -1; + DummyPort* dst_port = find_port (dst); + if (!valid_port (src)) { + PBD::error << _("DummyBackend::connect: Invalid Source Port Handle") << endmsg; + return -1; + } + if (!dst_port) { + PBD::error << _("DummyBackend::connect: Invalid Destination Port") + << " (" << dst << ")" << endmsg; + return -1; + } + return static_cast(src)->connect (dst_port); } int -DummyAudioBackend::disconnect (PortEngine::PortHandle, const std::string&) +DummyAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst) { - return -1; + DummyPort* dst_port = find_port (dst); + if (!valid_port (src) || !dst_port) { + PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg; + return -1; + } + return static_cast(src)->disconnect (dst_port); } int -DummyAudioBackend::disconnect_all (PortEngine::PortHandle) +DummyAudioBackend::disconnect_all (PortEngine::PortHandle port) { - return -1; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg; + return -1; + } + static_cast(port)->disconnect_all (); + return 0; } bool -DummyAudioBackend::connected (PortEngine::PortHandle, bool process_callback_safe) +DummyAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/) { - return false; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg; + return false; + } + return static_cast(port)->is_connected (); } bool -DummyAudioBackend::connected_to (PortEngine::PortHandle, const std::string&, bool process_callback_safe) +DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/) { - return false; + DummyPort* dst_port = find_port (dst); + if (!valid_port (src) || !dst_port) { + PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg; + return false; + } + return static_cast(src)->is_connected (dst_port); } bool -DummyAudioBackend::physically_connected (PortEngine::PortHandle, bool process_callback_safe) +DummyAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/) { - return false; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::physically_connected: Invalid Port") << endmsg; + return false; + } + return static_cast(port)->is_physically_connected (); } int -DummyAudioBackend::get_connections (PortEngine::PortHandle, std::vector&, bool process_callback_safe) +DummyAudioBackend::get_connections (PortEngine::PortHandle port, std::vector& names, bool /*process_callback_safe*/) { - return false; + if (!valid_port (port)) { + PBD::error << _("DummyBackend::get_connections: Invalid Port") << endmsg; + return -1; + } + + assert (0 == names.size ()); + + const std::vector& connected_ports = static_cast(port)->get_connections (); + + for (std::vector::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) { + names.push_back ((*i)->name ()); + } + + return (int)names.size (); } /* MIDI */ int -DummyAudioBackend::midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index) +DummyAudioBackend::midi_event_get ( + pframes_t& timestamp, + size_t& size, uint8_t** buf, void* port_buffer, + uint32_t event_index) { - return -1; + assert (buf && port_buffer); + DummyMidiBuffer& source = * (DummyMidiBuffer*)port_buffer; + if (event_index >= source.size ()) { + return -1; + } + DummyMidiEvent * const event = source[event_index].get (); + + timestamp = event->timestamp (); + size = event->size (); + *buf = event->data (); + return 0; } int -DummyAudioBackend::midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size) +DummyAudioBackend::midi_event_put ( + void* port_buffer, + pframes_t timestamp, + const uint8_t* buffer, size_t size) { - return -1; + assert (buffer && port_buffer); + DummyMidiBuffer& dst = * (DummyMidiBuffer*)port_buffer; + if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) { + fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n"); + return -1; + } + dst.push_back (boost::shared_ptr(new DummyMidiEvent (timestamp, buffer, size))); + return 0; } uint32_t DummyAudioBackend::get_midi_event_count (void* port_buffer) { - return -1; + assert (port_buffer); + return static_cast(port_buffer)->size (); } void DummyAudioBackend::midi_clear (void* port_buffer) { + assert (port_buffer); + DummyMidiBuffer * buf = static_cast(port_buffer); + assert (buf); + buf->clear (); } /* Monitoring */ @@ -590,60 +780,111 @@ DummyAudioBackend::monitoring_input (PortEngine::PortHandle) /* Latency management */ void -DummyAudioBackend::set_latency_range (PortEngine::PortHandle, bool for_playback, LatencyRange) +DummyAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range) { + if (!valid_port (port)) { + PBD::error << _("DummyPort::set_latency_range (): invalid port.") << endmsg; + } + static_cast(port)->set_latency_range (latency_range, for_playback); } LatencyRange -DummyAudioBackend::get_latency_range (PortEngine::PortHandle, bool for_playback) +DummyAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback) { - LatencyRange r; - r.min = 0; - r.max = 0; - return r; + if (!valid_port (port)) { + PBD::error << _("DummyPort::get_latency_range (): invalid port.") << endmsg; + LatencyRange r; + r.min = 0; + r.max = 0; + return r; + } + return static_cast(port)->latency_range (for_playback); } /* Discovering physical ports */ bool -DummyAudioBackend::port_is_physical (PortEngine::PortHandle) const +DummyAudioBackend::port_is_physical (PortEngine::PortHandle port) const { - return false; + if (!valid_port (port)) { + PBD::error << _("DummyPort::port_is_physical (): invalid port.") << endmsg; + return false; + } + return static_cast(port)->is_physical (); } void -DummyAudioBackend::get_physical_outputs (DataType type, std::vector&) +DummyAudioBackend::get_physical_outputs (DataType type, std::vector& port_names) { + for (size_t i = 0; i < _ports.size (); ++i) { + DummyPort* port = _ports[i]; + if ((port->type () == type) && port->is_output () && port->is_physical ()) { + port_names.push_back (port->name ()); + } + } } void -DummyAudioBackend::get_physical_inputs (DataType type, std::vector&) +DummyAudioBackend::get_physical_inputs (DataType type, std::vector& port_names) { + for (size_t i = 0; i < _ports.size (); ++i) { + DummyPort* port = _ports[i]; + if ((port->type () == type) && port->is_input () && port->is_physical ()) { + port_names.push_back (port->name ()); + } + } } ChanCount DummyAudioBackend::n_physical_outputs () const { + int n_midi = 0; + int n_audio = 0; + for (size_t i = 0; i < _ports.size (); ++i) { + DummyPort* port = _ports[i]; + if (port->is_output () && port->is_physical ()) { + switch (port->type ()) { + case DataType::AUDIO: ++n_audio; break; + case DataType::MIDI: ++n_midi; break; + default: break; + } + } + } ChanCount cc; - cc.set (DataType::AUDIO, 0); - cc.set (DataType::MIDI, 0); + cc.set (DataType::AUDIO, n_audio); + cc.set (DataType::MIDI, n_midi); return cc; } ChanCount DummyAudioBackend::n_physical_inputs () const { + int n_midi = 0; + int n_audio = 0; + for (size_t i = 0; i < _ports.size (); ++i) { + DummyPort* port = _ports[i]; + if (port->is_input () && port->is_physical ()) { + switch (port->type ()) { + case DataType::AUDIO: ++n_audio; break; + case DataType::MIDI: ++n_midi; break; + default: break; + } + } + } ChanCount cc; - cc.set (DataType::AUDIO, 0); - cc.set (DataType::MIDI, 0); + cc.set (DataType::AUDIO, n_audio); + cc.set (DataType::MIDI, n_midi); return cc; } /* Getting access to the data buffer for a port */ void* -DummyAudioBackend::get_buffer (PortEngine::PortHandle, pframes_t) +DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes) { + assert (port); + assert (valid_port (port)); + return static_cast(port)->get_buffer (nframes); } /* Engine Process */ @@ -681,6 +922,7 @@ DummyAudioBackend::main_process_thread () return 0; } + /******************************************************************************/ static boost::shared_ptr _instance; @@ -726,3 +968,208 @@ extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor () { return &_descriptor; } + + +/******************************************************************************/ +DummyPort::DummyPort (const std::string& name, PortFlags flags) + : _name (name) + , _flags (flags) +{ + _capture_latency_range.min = 0; + _capture_latency_range.max = 0; + _playback_latency_range.min = 0; + _playback_latency_range.max = 0; +} + +DummyPort::~DummyPort () { + disconnect_all (); +} + + +int DummyPort::connect (DummyPort *port) +{ + if (!port) { + PBD::error << _("DummyPort::connect (): invalid (null) port") << endmsg; + return -1; + } + + if (type () != port->type ()) { + PBD::error << _("DummyPort::connect (): wrong port-type") << endmsg; + return -1; + } + + if (is_output () && port->is_output ()) { + PBD::error << _("DummyPort::connect (): cannot inter-connect output ports.") << endmsg; + return -1; + } + + if (is_input () && port->is_input ()) { + PBD::error << _("DummyPort::connect (): cannot inter-connect input ports.") << endmsg; + return -1; + } + + if (this == port) { + PBD::error << _("DummyPort::connect (): cannot self-connect ports.") << endmsg; + return -1; + } + + if (is_connected (port)) { + PBD::error << _("DummyPort::connect (): ports are already connected:") + << " (" << name () << ") -> (" << port->name () << ")" + << endmsg; + return -1; + } + + _connect (port, true); + return 0; +} + + +void DummyPort::_connect (DummyPort *port, bool callback) +{ + _connections.push_back (port); + if (callback) { + port->_connect (this, false); + } +} + +int DummyPort::disconnect (DummyPort *port) +{ + if (!port) { + PBD::error << _("DummyPort::disconnect (): invalid (null) port") << endmsg; + return -1; + } + + if (!is_connected (port)) { + PBD::error << _("DummyPort::disconnect (): ports are not connected:") + << " (" << name () << ") -> (" << port->name () << ")" + << endmsg; + return -1; + } + _disconnect (port, true); + return 0; +} + +void DummyPort::_disconnect (DummyPort *port, bool callback) +{ + std::vector::iterator it = std::find (_connections.begin (), _connections.end (), port); + + assert (it != _connections.end ()); + + _connections.erase (it); + + if (callback) { + port->_disconnect (this, false); + } +} + + +void DummyPort::disconnect_all () +{ + while (!_connections.empty ()) { + _connections.back ()->_disconnect (this, false); + _connections.pop_back (); + } +} + +bool +DummyPort::is_connected (const DummyPort *port) const +{ + return std::find (_connections.begin (), _connections.end (), port) != _connections.end (); +} + +bool DummyPort::is_physically_connected () const +{ + for (std::vector::const_iterator it = _connections.begin (); it != _connections.end (); ++it) { + if ((*it)->is_physical ()) { + return true; + } + } + return false; +} + +/******************************************************************************/ + +DummyAudioPort::DummyAudioPort (const std::string& name, PortFlags flags) + : DummyPort (name, flags) +{ + memset (_buffer, 0, sizeof (_buffer)); +} + +DummyAudioPort::~DummyAudioPort () { } + +void* DummyAudioPort::get_buffer (pframes_t n_samples) +{ + if (is_input ()) { + std::vector::const_iterator it = get_connections ().begin (); + if (it == get_connections ().end ()) { + memset (_buffer, 0, n_samples * sizeof (Sample)); + } else { + DummyAudioPort const * source = static_cast(*it); + assert (source && source->is_output ()); + memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample)); + while (++it != get_connections ().end ()) { + source = static_cast(*it); + assert (source && source->is_output ()); + Sample* dst = buffer (); + const Sample* src = source->const_buffer (); + for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) { + *dst += *src; + } + } + } + } + return _buffer; +} + + +DummyMidiPort::DummyMidiPort (const std::string& name, PortFlags flags) + : DummyPort (name, flags) +{ + _buffer.clear (); +} + +DummyMidiPort::~DummyMidiPort () { } + +void* DummyMidiPort::get_buffer (pframes_t /* nframes */) +{ + if (is_input ()) { + _buffer.clear (); + for (std::vector::const_iterator i = get_connections ().begin (); + i != get_connections ().end (); + ++i) { + const DummyMidiBuffer src = static_cast(*i)->const_buffer (); + for (DummyMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) { + _buffer.push_back (boost::shared_ptr(new DummyMidiEvent (**it))); + } + } + std::sort (_buffer.begin (), _buffer.end ()); + } + return &_buffer; +} + +DummyMidiEvent::DummyMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size) + : _size (size) + , _timestamp (timestamp) + , _data (0) +{ + if (size > 0) { + _data = (uint8_t*) malloc (size); + memcpy (_data, data, size); + } +} + +DummyMidiEvent::DummyMidiEvent (const DummyMidiEvent& other) + : _size (other.size ()) + , _timestamp (other.timestamp ()) + , _data (0) +{ + if (other.size () && other.const_data ()) { + _data = (uint8_t*) malloc (other.size ()); + memcpy (_data, other.const_data (), other.size ()); + } +}; + +DummyMidiEvent::~DummyMidiEvent () { + free (_data); +}; diff --git a/libs/backends/dummy/dummy_audiobackend.h b/libs/backends/dummy/dummy_audiobackend.h index ad6035dcca..b31d4f1658 100644 --- a/libs/backends/dummy/dummy_audiobackend.h +++ b/libs/backends/dummy/dummy_audiobackend.h @@ -28,11 +28,118 @@ #include #include +#include + #include "ardour/types.h" #include "ardour/audio_backend.h" namespace ARDOUR { +class DummyMidiEvent { + public: + DummyMidiEvent(const pframes_t timestamp, const uint8_t* data, size_t size); + DummyMidiEvent(const DummyMidiEvent& other); + ~DummyMidiEvent(); + size_t size () const { return _size; }; + pframes_t timestamp () const { return _timestamp; }; + const unsigned char* const_data () const { return _data; }; + unsigned char* data () { return _data; }; + bool operator< (const DummyMidiEvent &other) const { return timestamp () < other.timestamp (); }; + private: + size_t _size; + pframes_t _timestamp; + uint8_t *_data; +}; + +typedef std::vector > DummyMidiBuffer; + +class DummyPort { + protected: + DummyPort (const std::string&, PortFlags); + public: + virtual ~DummyPort (); + + const std::string& name () const { return _name; } + PortFlags flags () const { return _flags; } + + int set_name (const std::string &name) { _name = name; return 0; } + + virtual DataType type () const = 0; + + bool is_input () const { return flags () & IsInput; } + bool is_output () const { return flags () & IsOutput; } + bool is_physical () const { return flags () & IsPhysical; } + bool is_terminal () const { return flags () & IsTerminal; } + bool is_connected () const { return _connections.size () != 0; } + bool is_connected (const DummyPort *port) const; + bool is_physically_connected () const; + + const std::vector& get_connections () const { return _connections; } + + int connect (DummyPort *port); + int disconnect (DummyPort *port); + void disconnect_all (); + + virtual void* get_buffer (pframes_t nframes) = 0; + + const LatencyRange& latency_range (bool for_playback) const + { + return for_playback ? _playback_latency_range : _capture_latency_range; + } + + void set_latency_range (const LatencyRange &latency_range, bool for_playback) + { + if (for_playback) + { + _playback_latency_range = latency_range; + } + else + { + _capture_latency_range = latency_range; + } + } + + private: + std::string _name; + const PortFlags _flags; + LatencyRange _capture_latency_range; + LatencyRange _playback_latency_range; + std::vector _connections; + + void _connect (DummyPort* , bool); + void _disconnect (DummyPort* , bool); + +}; // class DummyPort + +class DummyAudioPort : public DummyPort { + public: + DummyAudioPort (const std::string&, PortFlags); + ~DummyAudioPort (); + + DataType type () const { return DataType::AUDIO; }; + + Sample* buffer () { return _buffer; } + const Sample* const_buffer () const { return _buffer; } + void* get_buffer (pframes_t nframes); + + private: + Sample _buffer[8192]; +}; // class DummyAudioPort + +class DummyMidiPort : public DummyPort { + public: + DummyMidiPort (const std::string&, PortFlags); + ~DummyMidiPort (); + + DataType type () const { return DataType::MIDI; }; + + void* get_buffer (pframes_t nframes); + const DummyMidiBuffer const_buffer () const { return _buffer; } + + private: + DummyMidiBuffer _buffer; +}; // class DummyMidiPort + class DummyAudioBackend : public AudioBackend { public: DummyAudioBackend (AudioEngine& e); @@ -170,6 +277,7 @@ class DummyAudioBackend : public AudioBackend { float _samplerate; size_t _audio_buffersize; float _dsp_load; + static size_t _max_buffer_size; uint32_t _n_inputs; uint32_t _n_outputs; @@ -193,6 +301,22 @@ class DummyAudioBackend : public AudioBackend { ThreadData (DummyAudioBackend* e, boost::function fp, size_t stacksz) : engine (e) , f (fp) , stacksize (stacksz) {} }; + + /* port engine */ + std::vector _ports; + + bool valid_port (PortHandle port) const { + return std::find (_ports.begin (), _ports.end (), (DummyPort*)port) != _ports.end (); + } + DummyPort * find_port(const std::string& port_name) const { + for (std::vector::const_iterator it = _ports.begin (); it != _ports.end (); ++it) { + if ((*it)->name () == port_name) { + return *it; + } + } + return NULL; + } + }; // class DummyAudioBackend } // namespace