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wrapper.h
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wrapper.h
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/*
* Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugin-fw
* Created on: 31 янв. 2022 г.
*
* lsp-plugin-fw is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-plugin-fw 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-plugin-fw. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_PLUG_FW_WRAP_JACK_IMPL_WRAPPER_H_
#define LSP_PLUG_IN_PLUG_FW_WRAP_JACK_IMPL_WRAPPER_H_
#include <lsp-plug.in/plug-fw/version.h>
#include <lsp-plug.in/plug-fw/wrap/jack/wrapper.h>
#include <lsp-plug.in/plug-fw/wrap/jack/ports.h>
#include <lsp-plug.in/plug-fw/core/SamplePlayer.h>
namespace lsp
{
namespace jack
{
Wrapper::Wrapper(plug::Module *plugin, resource::ILoader *loader): IWrapper(plugin, loader)
{
pClient = NULL;
nState = S_CREATED;
bUpdateSettings = true;
nLatency = 0;
pExecutor = NULL;
nPosition = 0;
bUIActive = false;
nQueryDrawReq = 0;
nQueryDrawResp = 0;
nDumpReq = 0;
nDumpResp = 0;
pSamplePlayer = NULL;
pPackage = NULL;
}
Wrapper::~Wrapper()
{
pClient = NULL;
nState = S_CREATED;
nLatency = 0;
pExecutor = NULL;
nQueryDrawReq = 0;
nQueryDrawResp = 0;
nDumpReq = 0;
nDumpResp = 0;
pSamplePlayer = NULL;
}
static ssize_t cmp_port_identifiers(const jack::Port *pa, const jack::Port *pb)
{
const meta::port_t *a = pa->metadata();
const meta::port_t *b = pb->metadata();
return strcmp(a->id, b->id);
}
status_t Wrapper::init()
{
status_t res;
// Load package information
io::IInStream *is = resources()->read_stream(LSP_BUILTIN_PREFIX "manifest.json");
if (is == NULL)
{
lsp_error("No manifest.json found in resources");
return STATUS_BAD_STATE;
}
res = meta::load_manifest(&pPackage, is);
is->close();
delete is;
if (res != STATUS_OK)
{
lsp_error("Error while reading manifest file, error: %d", int(res));
return res;
}
// Obtain plugin metadata
if (pPlugin == NULL)
return STATUS_BAD_STATE;
const meta::plugin_t *meta = pPlugin->metadata();
if (meta == NULL)
return STATUS_BAD_STATE;
// Create ports
lsp_trace("Creating ports for %s - %s", meta->name, meta->description);
lltl::parray<plug::IPort> plugin_ports;
for (const meta::port_t *port = meta->ports ; port->id != NULL; ++port)
create_port(&plugin_ports, port, NULL);
// Generate list of sorted ports by identifier
if (!vSortedPorts.add(vAllPorts))
return STATUS_NO_MEM;
vSortedPorts.qsort(cmp_port_identifiers);
// Initialize plugin and UI
pPlugin->init(this, plugin_ports.array());
// Create sample player if required
if (meta->extensions & meta::E_FILE_PREVIEW)
{
pSamplePlayer = new core::SamplePlayer(meta);
if (pSamplePlayer == NULL)
return STATUS_NO_MEM;
pSamplePlayer->init(this, plugin_ports.array(), plugin_ports.size());
}
// Update state, mark initialized
nState = S_INITIALIZED;
return STATUS_OK;
}
void Wrapper::set_routing(const lltl::darray<connection_t> *routing)
{
if (routing->size() <= 0)
return;
for (size_t i=0, n=routing->size(); i<n; ++i)
{
const connection_t *conn = routing->uget(i);
if (conn == NULL)
continue;
size_t self_ports = 0;
const char *src = conn->src;
const char *dst = conn->dst;
// Check the source port
if (strchr(src, ':') == NULL)
{
++self_ports;
jack::Port *p = port_by_id(src);
const meta::port_t *meta = (p != NULL) ? p->metadata() : NULL;
if ((meta == NULL) || !(meta::is_audio_out_port(meta) || meta::is_midi_out_port(meta)))
{
fprintf(stderr, " %s -> %s: invalid port '%s', should be AUDIO OUT or MIDI OUT\n", src, dst, src);
continue;
}
jack::DataPort *dp = static_cast<jack::DataPort *>(p);
src = dp->jack_name();
}
// Check the destination port
if (strchr(dst, ':') == NULL)
{
++self_ports;
jack::Port *p = port_by_id(dst);
const meta::port_t *meta = (p != NULL) ? p->metadata() : NULL;
if ((meta == NULL) || !(meta::is_audio_in_port(meta) || meta::is_midi_in_port(meta)))
{
fprintf(stderr, " %s -> %s: invalid port '%s', should be AUDIO IN or MIDI IN\n", src, dst, dst);
continue;
}
jack::DataPort *dp = static_cast<jack::DataPort *>(p);
dst = dp->jack_name();
}
// At least one self port should be defined
if (self_ports <= 0)
{
fprintf(stderr, " %s -> %s: at least one port should belong to the plugin\n", src, dst);
continue;
}
// Perform the connection
int res = jack_connect(pClient, src, dst);
switch (res)
{
case 0:
fprintf(stderr, " %s -> %s: OK\n", src, dst);
break;
case EEXIST:
fprintf(stderr, " %s -> %s: connection already has been estimated\n", src, dst);
break;
default:
fprintf(stderr, " %s -> %s: error, code=%d\n", src, dst, res);
break;
}
}
}
status_t Wrapper::connect()
{
// Ensure that client identifier is not longer than jack_client_name_size()
size_t max_client_size = jack_client_name_size();
char *client_name = static_cast<char *>(alloca(max_client_size));
strncpy(client_name, pPlugin->metadata()->uid, max_client_size);
client_name[max_client_size-1] = '\0';
// Check connection state
switch (nState)
{
case S_CREATED:
lsp_error("connect() on uninitialized JACK wrapper");
return STATUS_BAD_STATE;
case S_CONNECTED:
return STATUS_OK;
case S_INITIALIZED:
case S_DISCONNECTED:
// OK, valid states
break;
case S_CONN_LOST:
lsp_error("connect() from CONNECTION_LOST state, need to perform disconnect() first");
return STATUS_BAD_STATE;
default:
lsp_error("connect() from invalid state");
return STATUS_BAD_STATE;
}
// Get JACK client
jack_status_t jack_status;
pClient = jack_client_open(client_name, JackNoStartServer, &jack_status);
if (pClient == NULL)
{
lsp_warn("Could not connect to JACK (status=0x%08x)", int(jack_status));
nState = S_DISCONNECTED;
return STATUS_DISCONNECTED;
}
// Set-up shutdown handler
jack_on_shutdown(pClient, shutdown, this);
// Determine size of buffer
if (jack_set_buffer_size_callback(pClient, sync_buffer_size, this))
{
lsp_error("Could not setup buffer size callback");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
size_t buf_size = jack_get_buffer_size(pClient);
// Connect data ports
for (size_t i=0, n=vDataPorts.size(); i<n; ++i)
{
jack::DataPort *dp = vDataPorts.uget(i);
if (dp == NULL)
continue;
dp->connect();
dp->set_buffer_size(buf_size);
}
// Set plugin sample rate and call for settings update
if (jack_set_sample_rate_callback(pClient, sync_sample_rate, this))
{
lsp_error("Could not setup sample rate callback");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
jack_nframes_t sr = jack_get_sample_rate(pClient);
pPlugin->set_sample_rate(sr);
if (pSamplePlayer != NULL)
pSamplePlayer->set_sample_rate(sr);
sPosition.sampleRate = sr;
bUpdateSettings = true;
// Add processing callback
if (jack_set_process_callback(pClient, process, this))
{
lsp_error("Could not initialize JACK client");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
// Setup position synchronization callback
if (jack_set_sync_callback(pClient, jack_sync, this))
{
lsp_error("Could not bind position sync callback");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
// Set sync timeout for handler
if (jack_set_sync_timeout(pClient, 100000)) // 100 msec timeout
{
lsp_error("Could not setup sync timeout");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
// Now we ready for processing
if (pPlugin != NULL)
pPlugin->activate();
// Activate JACK client
if (jack_activate(pClient))
{
lsp_error("Could not activate JACK client");
nState = S_CONN_LOST;
return STATUS_DISCONNECTED;
}
nState = S_CONNECTED;
return STATUS_OK;
}
int Wrapper::run(size_t samples)
{
// Activate UI if present
bool ui_active = bUIActive;
if (ui_active != pPlugin->ui_active())
{
lsp_trace("UI ACTIVE: %s", (ui_active) ? "true" : "false");
if (ui_active)
pPlugin->activate_ui();
else
pPlugin->deactivate_ui();
}
// Prepare ports
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
// Get port
jack::Port *port = vAllPorts.uget(i);
if (port == NULL)
continue;
// Pre-process data in port
if (port->pre_process(samples))
{
lsp_trace("port changed: %s", port->metadata()->id);
bUpdateSettings = true;
}
}
// Check that input parameters have changed
if (bUpdateSettings)
{
lsp_trace("updating settings");
pPlugin->update_settings();
bUpdateSettings = false;
}
// Need to dump state?
uatomic_t dump_req = nDumpReq;
if (dump_req != nDumpResp)
{
dump_plugin_state();
nDumpResp = dump_req;
}
// Call the main processing unit
pPlugin->process(samples);
// Launch the sample player
if (pSamplePlayer != NULL)
pSamplePlayer->process(samples);
// Report latency if changed
ssize_t latency = pPlugin->latency();
if (latency != nLatency)
{
jack_recompute_total_latencies(pClient);
nLatency = latency;
}
// Post-process ALL ports
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
jack::Port *port = vAllPorts.uget(i);
if (port != NULL)
port->post_process(samples);
}
return 0;
}
status_t Wrapper::disconnect()
{
// Check connection state
switch (nState)
{
case S_CREATED:
case S_DISCONNECTED:
case S_INITIALIZED:
// OK, valid state
return STATUS_OK;
case S_CONNECTED:
case S_CONN_LOST:
// OK, perform disconnect
break;
default:
lsp_error("disconnect() from invalid state");
return STATUS_BAD_STATE;
}
// Try to deactivate application
if (pClient != NULL)
jack_deactivate(pClient);
// Deactivate plugin
if (pPlugin != NULL)
pPlugin->deactivate();
// Try to disconnect all data ports
for (size_t i=0, n=vDataPorts.size(); i<n; ++i)
{
jack::DataPort *dp = vDataPorts.uget(i);
if (dp != NULL)
dp->disconnect();
}
// Destroy jack client
if (pClient != NULL)
jack_client_close(pClient);
nState = S_DISCONNECTED;
pClient = NULL;
return STATUS_OK;
}
void Wrapper::destroy()
{
// Disconnect
disconnect();
// Destroy sample player
if (pSamplePlayer != NULL)
{
pSamplePlayer->destroy();
delete pSamplePlayer;
pSamplePlayer = NULL;
}
// Destroy ports
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
Port *p = vAllPorts.uget(i);
// lsp_trace("destroy port id=%s", p->metadata()->id);
p->destroy();
delete p;
}
vAllPorts.flush();
vSortedPorts.flush();
// Cleanup generated metadata
for (size_t i=0, n=vGenMetadata.size(); i<n; ++i)
{
meta::port_t *port = vGenMetadata.uget(i);
// lsp_trace("destroy generated port metadata %p", port);
meta::drop_port_metadata(port);
}
vGenMetadata.flush();
// Clear all other port containers
vDataPorts.flush();
// Forget the plugin instance
pPlugin = NULL;
// Destroy executor service
if (pExecutor != NULL)
{
pExecutor->shutdown();
delete pExecutor;
pExecutor = NULL;
}
// Destroy package
meta::free_manifest(pPackage);
pPackage = NULL;
}
void Wrapper::create_port(lltl::parray<plug::IPort> *plugin_ports, const meta::port_t *port, const char *postfix)
{
jack::Port *jp = NULL;
switch (port->role)
{
case meta::R_MESH:
jp = new jack::MeshPort(port, this);
break;
case meta::R_FBUFFER:
jp = new jack::FrameBufferPort(port, this);
break;
case meta::R_STREAM:
jp = new jack::StreamPort(port, this);
break;
case meta::R_MIDI:
case meta::R_AUDIO:
{
jack::DataPort *jdp = new jack::DataPort(port, this);
vDataPorts.add(jdp);
jp = jdp;
break;
}
case meta::R_OSC:
jp = new jack::OscPort(port, this);
break;
case meta::R_PATH:
jp = new jack::PathPort(port, this);
break;
case meta::R_CONTROL:
case meta::R_BYPASS:
jp = new jack::ControlPort(port, this);
break;
case meta::R_METER:
jp = new jack::MeterPort(port, this);
break;
case meta::R_PORT_SET:
{
LSPString postfix_str;
jack::PortGroup *pg = new jack::PortGroup(port, this);
pg->init();
vAllPorts.add(pg);
plugin_ports->add(pg);
for (size_t row=0; row<pg->rows(); ++row)
{
// Generate postfix
postfix_str.fmt_ascii("%s_%d", (postfix != NULL) ? postfix : "", int(row));
const char *port_post = postfix_str.get_ascii();
// Clone port metadata
meta::port_t *cm = clone_port_metadata(port->members, port_post);
if (cm != NULL)
{
vGenMetadata.add(cm);
for (; cm->id != NULL; ++cm)
{
if (meta::is_growing_port(cm))
cm->start = cm->min + ((cm->max - cm->min) * row) / float(pg->rows());
else if (meta::is_lowering_port(cm))
cm->start = cm->max - ((cm->max - cm->min) * row) / float(pg->rows());
create_port(plugin_ports, cm, port_post);
}
}
}
break;
}
default:
break;
}
if (jp != NULL)
{
jp->init();
#ifdef LSP_DEBUG
const char *src_id = jp->metadata()->id;
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
jack::Port *p = vAllPorts.uget(i);
if (!strcmp(src_id, p->metadata()->id))
{
lsp_error("ERROR: port %s already defined", src_id);
}
}
#endif /* LSP_DEBUG */
vAllPorts.add(jp);
plugin_ports->add(jp);
}
}
const meta::package_t *Wrapper::package() const
{
return pPackage;
}
int Wrapper::latency_callback(jack_latency_callback_mode_t mode)
{
if (mode == JackCaptureLatency)
{
ssize_t latency = pPlugin->latency();
for (size_t i=0, n=vDataPorts.size(); i < n; ++i)
{
jack::DataPort *dp = vDataPorts.uget(i);
if (dp == NULL)
continue;
dp->report_latency(latency);
}
}
return 0;
}
int Wrapper::sync_position(jack_transport_state_t state, const jack_position_t *pos)
{
plug::position_t npos = sPosition;
// Update settings
npos.speed = (state == JackTransportRolling) ? 1.0f : 0.0f;
npos.frame = pos->frame;
if (pos->valid & JackPositionBBT)
{
npos.numerator = pos->beats_per_bar;
npos.denominator = pos->beat_type;
npos.beatsPerMinute = pos->beats_per_minute;
npos.tick = pos->tick;
npos.ticksPerBeat = pos->ticks_per_beat;
}
// lsp_trace("numerator = %.3f, denominator = %.3f, bpm = %.3f, tick = %.3f, tpb = %.3f",
// float(npos.numerator), float(npos.denominator), float(npos.beatsPerMinute),
// float(npos.tick), float(npos.ticksPerBeat));
// Call plugin for position update
if (pPlugin->set_position(&npos))
bUpdateSettings = true;
// Update current position and increment version counter
sPosition = npos;
atomic_add(&nPosition, 1);
return 0;
}
ipc::IExecutor *Wrapper::executor()
{
lsp_trace("executor = %p", reinterpret_cast<void *>(pExecutor));
if (pExecutor != NULL)
return pExecutor;
lsp_trace("Creating native executor service");
ipc::NativeExecutor *exec = new ipc::NativeExecutor();
if (exec == NULL)
return NULL;
if (exec->start() != STATUS_OK)
{
delete exec;
return NULL;
}
return pExecutor = exec;
}
core::KVTStorage *Wrapper::kvt_lock()
{
return (sKVTMutex.lock()) ? &sKVT : NULL;
}
core::KVTStorage *Wrapper::kvt_trylock()
{
return (sKVTMutex.try_lock()) ? &sKVT : NULL;
}
bool Wrapper::kvt_release()
{
return sKVTMutex.unlock();
}
int Wrapper::process(jack_nframes_t nframes, void *arg)
{
dsp::context_t ctx;
int result;
// Call the plugin for processing
dsp::start(&ctx);
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
result = _this->run(nframes);
dsp::finish(&ctx);
return result;
}
int Wrapper::sync_buffer_size(jack_nframes_t nframes, void *arg)
{
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
for (size_t i=0, n=_this->vDataPorts.size(); i<n; ++i)
{
jack::DataPort *p = _this->vDataPorts.uget(i);
if (p != NULL)
p->set_buffer_size(nframes);
}
return 0;
}
int Wrapper::sync_sample_rate(jack_nframes_t nframes, void *arg)
{
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
_this->pPlugin->set_sample_rate(nframes);
if (_this->pSamplePlayer != NULL)
_this->pSamplePlayer->set_sample_rate(nframes);
_this->sPosition.sampleRate = nframes;
_this->bUpdateSettings = true;
return 0;
}
int Wrapper::jack_sync(jack_transport_state_t state, jack_position_t *pos, void *arg)
{
dsp::context_t ctx;
int result;
// Call the plugin for processing
dsp::start(&ctx);
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
result = _this->sync_position(state, pos);
dsp::finish(&ctx);
return result;
}
int Wrapper::latency_callback(jack_latency_callback_mode_t mode, void *arg)
{
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
return _this->latency_callback(mode);
}
void Wrapper::shutdown(void *arg)
{
// Reset the client state
jack::Wrapper *_this = static_cast<jack::Wrapper *>(arg);
_this->nState = S_CONN_LOST;
lsp_warn("JACK NOTIFICATION: shutdown");
}
plug::canvas_data_t *Wrapper::render_inline_display(size_t width, size_t height)
{
// Allocate canvas for drawing
plug::ICanvas *canvas = create_canvas(width, height);
if (canvas == NULL)
return NULL;
// Call plugin for rendering and return canvas data
bool res = pPlugin->inline_display(canvas, width, height);
canvas->sync();
return (res) ? canvas->data() : NULL;
}
jack::Port *Wrapper::port_by_idx(size_t index)
{
return vAllPorts.get(index);
}
jack::Port *Wrapper::port_by_id(const char *id)
{
ssize_t first = 0, last = vSortedPorts.size() - 1;
while (first <= last)
{
ssize_t middle = (first + last) >> 1;
jack::Port *p = vSortedPorts.uget(middle);
const meta::port_t *meta = p->metadata();
int cmp = strcmp(id, meta->id);
if (cmp < 0)
last = middle - 1;
else if (cmp > 0)
first = middle + 1;
else
return p;
}
return NULL;
}
status_t Wrapper::import_settings(const char *file)
{
config::PullParser parser;
status_t res = parser.open(file);
if (res == STATUS_OK)
res = import_settings(&parser);
status_t res2 = parser.close();
return (res == STATUS_OK) ? res2 : res;
}
status_t Wrapper::import_settings(const LSPString *file)
{
config::PullParser parser;
status_t res = parser.open(file);
if (res == STATUS_OK)
res = import_settings(&parser);
status_t res2 = parser.close();
return (res == STATUS_OK) ? res2 : res;
}
status_t Wrapper::import_settings(const io::Path *file)
{
config::PullParser parser;
status_t res = parser.open(file);
if (res == STATUS_OK)
res = import_settings(&parser);
status_t res2 = parser.close();
return (res == STATUS_OK) ? res2 : res;
}
status_t Wrapper::import_settings(io::IInSequence *is)
{
config::PullParser parser;
status_t res = parser.wrap(is);
if (res == STATUS_OK)
res = import_settings(&parser);
status_t res2 = parser.close();
return (res == STATUS_OK) ? res2 : res;
}
status_t Wrapper::import_settings(config::PullParser *parser)
{
status_t res;
config::param_t param;
core::KVTStorage *kvt = kvt_lock();
// Reset all ports to default values
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
jack::Port *p = vAllPorts.uget(i);
if (p == NULL)
continue;
p->set_default();
}
// Process the configuration file
while ((res = parser->next(¶m)) == STATUS_OK)
{
if ((param.name.starts_with('/')) && (kvt != NULL)) // KVT
{
core::kvt_param_t kp;
switch (param.type())
{
case config::SF_TYPE_I32:
kp.type = core::KVT_INT32;
kp.i32 = param.v.i32;
break;
case config::SF_TYPE_U32:
kp.type = core::KVT_UINT32;
kp.u32 = param.v.u32;
break;
case config::SF_TYPE_I64:
kp.type = core::KVT_INT64;
kp.i64 = param.v.i64;
break;
case config::SF_TYPE_U64:
kp.type = core::KVT_UINT64;
kp.u64 = param.v.u64;
break;
case config::SF_TYPE_F32:
kp.type = core::KVT_FLOAT32;
kp.f32 = param.v.f32;
break;
case config::SF_TYPE_F64:
kp.type = core::KVT_FLOAT64;
kp.f64 = param.v.f64;
break;
case config::SF_TYPE_BOOL:
kp.type = core::KVT_FLOAT32;
kp.f32 = (param.v.bval) ? 1.0f : 0.0f;
break;
case config::SF_TYPE_STR:
kp.type = core::KVT_STRING;
kp.str = param.v.str;
break;
case config::SF_TYPE_BLOB:
kp.type = core::KVT_BLOB;
kp.blob.size = param.v.blob.length;
kp.blob.ctype = param.v.blob.ctype;
kp.blob.data = NULL;
if (param.v.blob.data != NULL)
{
// Allocate memory
size_t src_left = strlen(param.v.blob.data);
size_t dst_left = 0x10 + param.v.blob.length;
void *blob = ::malloc(dst_left);
if (blob != NULL)
{
kp.blob.data = blob;
// Decode
size_t n = dsp::base64_dec(blob, &dst_left, param.v.blob.data, &src_left);
if ((n != param.v.blob.length) || (src_left != 0))
{
::free(blob);
kp.type = core::KVT_ANY;
kp.blob.data = NULL;
}
}
else
kp.type = core::KVT_ANY;
}
break;
default:
kp.type = core::KVT_ANY;
break;
}
if (kp.type != core::KVT_ANY)
{
const char *id = param.name.get_utf8();
kvt->put(id, &kp, core::KVT_RX);
}
// Free previously allocated data
if ((kp.type == core::KVT_BLOB) && (kp.blob.data != NULL))
free(const_cast<void *>(kp.blob.data));
}
else
{
for (size_t i=0, n=vAllPorts.size(); i<n; ++i)
{
jack::Port *p = vAllPorts.uget(i);
if (p == NULL)
continue;
const meta::port_t *meta = p->metadata();
if ((meta != NULL) && (param.name.equals_ascii(meta->id)))
{
set_port_value(p, ¶m, plug::PF_STATE_IMPORT, NULL);
break;
}
}
}
}
// Release KVT
if (kvt != NULL)
{
kvt->gc();
kvt_release();
}
return (res == STATUS_EOF) ? STATUS_OK : res;
}
bool Wrapper::set_port_value(jack::Port *port, const config::param_t *param, size_t flags, const io::Path *base)
{
// Get metadata
const meta::port_t *p = (port != NULL) ? port->metadata() : NULL;
if (p == NULL)
return false;
// Check that it's a control port
if (!meta::is_in_port(p))
return false;
// Apply changes
switch (p->role)
{
case meta::R_PORT_SET:
case meta::R_CONTROL:
case meta::R_BYPASS:
{
if (meta::is_discrete_unit(p->unit))
{
if (meta::is_bool_unit(p->unit))
port->update_value((param->to_bool()) ? 1.0f : 0.0f);
else
port->update_value(param->to_int());
}
else
{
float v = param->to_float();
// Decode decibels to values
if ((meta::is_decibel_unit(p->unit)) && (param->is_decibel()))
{
if ((p->unit == meta::U_GAIN_AMP) || (p->unit == meta::U_GAIN_POW))
{
if (v < -250.0f)
v = 0.0f;
else if (v > 250.0f)
v = (p->unit == meta::U_GAIN_AMP) ? dspu::db_to_gain(250.0f) : dspu::db_to_power(250.0f);
else
v = (p->unit == meta::U_GAIN_AMP) ? dspu::db_to_gain(v) : dspu::db_to_power(v);
}
}
port->update_value(v);
}
break;
}