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Allow to send MIDI data directly to a plugin

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This commit is contained in:
Robin Gareus 2017-09-09 02:23:13 +02:00
parent 483ad807ce
commit 2ca3009143
4 changed files with 35 additions and 2 deletions
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5
libs/ardour/ardour/plugin.h
View file

@ -33,6 +33,7 @@
#include "ardour/cycles.h"
#include "ardour/latent.h"
#include "ardour/libardour_visibility.h"
#include "ardour/midi_ring_buffer.h"
#include "ardour/midi_state_tracker.h"
#include "ardour/parameter_descriptor.h"
#include "ardour/types.h"
@ -159,6 +160,8 @@ class LIBARDOUR_API Plugin : public PBD::StatefulDestructible, public Latent
return boost::shared_ptr<ScalePoints>();
}
bool write_immediate_event (size_t size, const uint8_t* buf);
void realtime_handle_transport_stopped ();
void realtime_locate ();
void monitoring_changed ();
@ -379,6 +382,8 @@ private:
PBD::ScopedConnection _preset_connection;
MidiRingBuffer<framepos_t> _immediate_events;
void resolve_midi ();
};

2
libs/ardour/ardour/plugin_insert.h
View file

@ -77,6 +77,8 @@ class LIBARDOUR_API PluginInsert : public Processor
bool reset_parameters_to_default ();
bool can_reset_all_parameters ();
bool write_immediate_event (size_t size, const uint8_t* buf);
int set_block_size (pframes_t nframes);
ChanMapping input_map (uint32_t num) const {

18
libs/ardour/plugin.cc
View file

@ -101,6 +101,7 @@ Plugin::Plugin (AudioEngine& e, Session& s)
, _have_presets (false)
, _have_pending_stop_events (false)
, _parameter_changed_since_last_preset (false)
, _immediate_events(6096) // FIXME: size?
{
_pending_stop_events.ensure_buffers (DataType::MIDI, 1, 4096);
}
@ -116,6 +117,7 @@ Plugin::Plugin (const Plugin& other)
, _have_presets (false)
, _have_pending_stop_events (false)
, _parameter_changed_since_last_preset (false)
, _immediate_events(6096) // FIXME: size?
{
_pending_stop_events.ensure_buffers (DataType::MIDI, 1, 4096);
}
@ -345,16 +347,28 @@ Plugin::preset_by_uri (const string& uri)
}
}
bool
Plugin::write_immediate_event (size_t size, const uint8_t* buf)
{
if (!Evoral::midi_event_is_valid (buf, size)) {
return false;
}
return (_immediate_events.write (0, Evoral::MIDI_EVENT, size, buf) == size);
}
int
Plugin::connect_and_run (BufferSet& bufs,
framepos_t /*start*/, framepos_t /*end*/, double /*speed*/,
ChanMapping /*in_map*/, ChanMapping /*out_map*/,
pframes_t /* nframes */, framecnt_t /*offset*/)
pframes_t nframes, framecnt_t /*offset*/)
{
if (bufs.count().n_midi() > 0) {
/* Track notes that we are sending to the plugin */
if (_immediate_events.read_space() && nframes > 0) {
_immediate_events.read (bufs.get_midi (0), 0, 1, nframes - 1, true);
}
/* Track notes that we are sending to the plugin */
const MidiBuffer& b = bufs.get_midi (0);
_tracker.track (b.begin(), b.end());

12
libs/ardour/plugin_insert.cc
View file

@ -705,6 +705,18 @@ PluginInsert::bypassable_changed ()
BypassableChanged ();
}
bool
PluginInsert::write_immediate_event (size_t size, const uint8_t* buf)
{
bool rv = true;
for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
if (!(*i)->write_immediate_event (size, buf)) {
rv = false;
}
}
return rv;
}
void
PluginInsert::preset_load_set_value (uint32_t p, float v)
{