From 36f1e2ea3d2c7d20d8fa267a3a66438044e99e8e Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sun, 18 Jun 2006 19:26:53 +0000 Subject: Reworked use of Plugin class in engine slightly (more RAII-ey) git-svn-id: http://svn.drobilla.net/lad/grauph@56 a436a847-0d15-0410-975c-d299462d15a1 --- src/libs/engine/LV2Plugin.cpp | 263 ------------------------------------------ 1 file changed, 263 deletions(-) delete mode 100644 src/libs/engine/LV2Plugin.cpp (limited to 'src/libs/engine/LV2Plugin.cpp') diff --git a/src/libs/engine/LV2Plugin.cpp b/src/libs/engine/LV2Plugin.cpp deleted file mode 100644 index 411caa36..00000000 --- a/src/libs/engine/LV2Plugin.cpp +++ /dev/null @@ -1,263 +0,0 @@ -/* This file is part of Om. Copyright (C) 2006 Dave Robillard. - * - * Om 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. - * - * Om 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 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., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "LV2Plugin.h" -#include -#include -#include "float.h" -#include -#include -#include "InputPort.h" -#include "OutputPort.h" -#include "Plugin.h" - -namespace Om { - - -/** Partially construct a LV2Plugin. - * - * Object is not usable until instantiate() is called with success. - * (It _will_ crash!) - */ -LV2Plugin::LV2Plugin(const string& name, - size_t poly, - Patch* parent, - const SLV2Plugin* plugin, - samplerate srate, - size_t buffer_size) -: NodeBase(name, poly, parent, srate, buffer_size), - _lv2_plugin(plugin), - _instances(NULL) -{ - assert(_lv2_plugin); -} - - -/** Instantiate self from LV2 plugin descriptor. - * - * Implemented as a seperate function (rather than in the constructor) to - * allow graceful error-catching of broken plugins. - * - * Returns whether or not plugin was successfully instantiated. If return - * value is false, this object may not be used. - */ -bool -LV2Plugin::instantiate() -{ - size_t num_ports = slv2_plugin_get_num_ports(_lv2_plugin); - assert(num_ports > 0); - _ports->alloc(num_ports); - - _instances = new SLV2Instance*[_poly]; - - size_t port_buffer_size = 0; - - for (size_t i=0; i < _poly; ++i) { - _instances[i] = slv2_plugin_instantiate(_lv2_plugin, _srate, NULL); - if (_instances[i] == NULL) { - cerr << "Failed to instantiate plugin!" << endl; - return false; - } - } - - string port_name; - string port_path; - - Port* port = NULL; - - for (size_t j=0; j < num_ports; ++j) { - // LV2 shortnames are guaranteed to be unique, valid C identifiers - port_name = (char*)slv2_port_get_symbol(_lv2_plugin, j); - - assert(port_name.find("/") == string::npos); - - port_path = path() + "/" + port_name; - - // Assumes there is only the 4 classes - - SLV2PortClass port_class = slv2_port_get_class(_lv2_plugin, j); - const bool is_control = (port_class == SLV2_CONTROL_RATE_INPUT - || port_class == SLV2_CONTROL_RATE_OUTPUT); - const bool is_input = (port_class == SLV2_CONTROL_RATE_INPUT - || port_class == SLV2_AUDIO_RATE_INPUT); - - if (is_control) - port_buffer_size = 1; - else - port_buffer_size = _buffer_size; - - if (is_input) { - port = new InputPort(this, port_name, j, _poly, DataType::FLOAT, port_buffer_size); - _ports->at(j) = port; - } else /* output */ { - port = new OutputPort(this, port_name, j, _poly, DataType::FLOAT, port_buffer_size); - _ports->at(j) = port; - } - - assert(_ports->at(j) != NULL); - - //PortInfo* pi = port->port_info(); - //get_port_vals(j, pi); - - // Set default control val - /*if (pi->is_control()) - ((PortBase*)port)->set_value(pi->default_val(), 0); - else - ((PortBase*)port)->set_value(0.0f, 0);*/ - } - return true; -} - - -LV2Plugin::~LV2Plugin() -{ - for (size_t i=0; i < _poly; ++i) - slv2_instance_free(_instances[i]); - - delete[] _instances; -} - - -void -LV2Plugin::activate() -{ - NodeBase::activate(); - - PortBase* port = NULL; - - for (size_t i=0; i < _poly; ++i) { - for (unsigned long j=0; j < num_ports(); ++j) { - port = static_cast*>(_ports->at(j)); - set_port_buffer(i, j, ((PortBase*)_ports->at(j))->buffer(i)->data()); - if (port->type() == DataType::FLOAT && port->buffer_size() == 1) - port->set_value(0.0f, 0); // FIXME - else if (port->type() == DataType::FLOAT && port->buffer_size() > 1) - port->set_value(0.0f, 0); - } - slv2_instance_activate(_instances[i]); - } -} - - -void -LV2Plugin::deactivate() -{ - NodeBase::deactivate(); - - for (size_t i=0; i < _poly; ++i) - slv2_instance_deactivate(_instances[i]); -} - - -void -LV2Plugin::run(size_t nframes) -{ - NodeBase::run(nframes); // mixes down input ports - for (size_t i=0; i < _poly; ++i) - slv2_instance_run(_instances[i], nframes); -} - - -void -LV2Plugin::set_port_buffer(size_t voice, size_t port_num, void* buf) -{ - assert(voice < _poly); - - // Could be a MIDI port after this - if (port_num < num_ports()) { - slv2_instance_connect_port(_instances[voice], port_num, buf); - } -} - - -#if 0 -// Based on code stolen from jack-rack -void -LV2Plugin::get_port_vals(ulong port_index, PortInfo* info) -{ - LV2_Data upper = 0.0f; - LV2_Data lower = 0.0f; - LV2_Data normal = 0.0f; - LV2_PortRangeHintDescriptor hint_descriptor = _descriptor->PortRangeHints[port_index].HintDescriptor; - - /* set upper and lower, possibly adjusted to the sample rate */ - if (LV2_IS_HINT_SAMPLE_RATE(hint_descriptor)) { - upper = _descriptor->PortRangeHints[port_index].UpperBound * _srate; - lower = _descriptor->PortRangeHints[port_index].LowerBound * _srate; - } else { - upper = _descriptor->PortRangeHints[port_index].UpperBound; - lower = _descriptor->PortRangeHints[port_index].LowerBound; - } - - if (LV2_IS_HINT_LOGARITHMIC(hint_descriptor)) { - /* FLT_EPSILON is defined as the different between 1.0 and the minimum - * float greater than 1.0. So, if lower is < FLT_EPSILON, it will be 1.0 - * and the logarithmic control will have a base of 1 and thus not change - */ - if (lower < FLT_EPSILON) lower = FLT_EPSILON; - } - - - if (LV2_IS_HINT_HAS_DEFAULT(hint_descriptor)) { - - if (LV2_IS_HINT_DEFAULT_MINIMUM(hint_descriptor)) { - normal = lower; - } else if (LV2_IS_HINT_DEFAULT_LOW(hint_descriptor)) { - if (LV2_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.75 + log(upper) * 0.25); - } else { - normal = lower * 0.75 + upper * 0.25; - } - } else if (LV2_IS_HINT_DEFAULT_MIDDLE(hint_descriptor)) { - if (LV2_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.5 + log(upper) * 0.5); - } else { - normal = lower * 0.5 + upper * 0.5; - } - } else if (LV2_IS_HINT_DEFAULT_HIGH(hint_descriptor)) { - if (LV2_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.25 + log(upper) * 0.75); - } else { - normal = lower * 0.25 + upper * 0.75; - } - } else if (LV2_IS_HINT_DEFAULT_MAXIMUM(hint_descriptor)) { - normal = upper; - } else if (LV2_IS_HINT_DEFAULT_0(hint_descriptor)) { - normal = 0.0; - } else if (LV2_IS_HINT_DEFAULT_1(hint_descriptor)) { - normal = 1.0; - } else if (LV2_IS_HINT_DEFAULT_100(hint_descriptor)) { - normal = 100.0; - } else if (LV2_IS_HINT_DEFAULT_440(hint_descriptor)) { - normal = 440.0; - } - } else { // No default hint - if (LV2_IS_HINT_BOUNDED_BELOW(hint_descriptor)) { - normal = lower; - } else if (LV2_IS_HINT_BOUNDED_ABOVE(hint_descriptor)) { - normal = upper; - } - } - - info->min_val(lower); - info->default_val(normal); - info->max_val(upper); -} -#endif - - -} // namespace Om - -- cgit v1.2.1