diff options
Diffstat (limited to 'src/sample_and_hold_4430.c')
| -rw-r--r-- | src/sample_and_hold_4430.c | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/src/sample_and_hold_4430.c b/src/sample_and_hold_4430.c deleted file mode 100644 index b8a8958..0000000 --- a/src/sample_and_hold_4430.c +++ /dev/null @@ -1,296 +0,0 @@ -/* Sample and Hold. - * Copyright 2005 Thorsten Wilms. - * Based on David Robillard's "Hz to AMS style V/Oct" plugin for the skeleton. - * - * This plugin 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 plugin 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., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA - */ - -#define _XOPEN_SOURCE 500 /* strdup */ -#include <stdlib.h> -#include <string.h> - -#include "ladspa.h" - -#define SH_ID 4430 - -#define SH_NUM_PORTS 5 - -/* Port Numbers */ -#define SH_INPUT 0 -#define SH_TRIGGER 1 -#define SH_THRESHOLD 2 -#define SH_CONTINUOUS 3 -#define SH_OUTPUT 4 - -/* All state information for plugin */ -typedef struct -{ - /* Ports */ - LADSPA_Data* input_buffer; - LADSPA_Data* trigger_buffer; - LADSPA_Data* threshold_buffer; - LADSPA_Data* continuous_buffer; - LADSPA_Data* output_buffer; - - float hold; /* the value sampled and held */ - float last_trigger; /* trigger port value from the previous frame */ -} SH; - -/* Construct a new plugin instance */ -LADSPA_Handle -SH_instantiate(const LADSPA_Descriptor * descriptor, unsigned long srate) -{ - return (LADSPA_Handle)malloc(sizeof(SH)); -} - -/* Connect a port to a data location */ -void -SH_connect_port(LADSPA_Handle instance, - unsigned long port, - LADSPA_Data* location) -{ - SH* plugin = (SH*)instance; - - switch (port) { - case SH_INPUT: - plugin->input_buffer = location; - break; - case SH_TRIGGER: - plugin->trigger_buffer = location; - break; - case SH_THRESHOLD: - plugin->threshold_buffer = location; - break; - case SH_CONTINUOUS: - plugin->continuous_buffer = location; - break; - case SH_OUTPUT: - plugin->output_buffer = location; - break; - } -} - -void -SH_activate(LADSPA_Handle instance) -{ - SH* plugin = (SH*)instance; - - plugin->hold = 0; - plugin->last_trigger = 0; -} - -void -SH_run_cr(LADSPA_Handle instance, unsigned long nframes) -{ - SH* const plugin = (SH*)instance; - const LADSPA_Data* const input = plugin->input_buffer; - const LADSPA_Data* const trigger = plugin->trigger_buffer; - const LADSPA_Data threshold = *plugin->threshold_buffer; - const LADSPA_Data continuous = *plugin->continuous_buffer; - LADSPA_Data* const output = plugin->output_buffer; - - unsigned long i; - - /* Continuous triggering on (sample while trigger > threshold) */ - if (continuous != 0.0f) { - for (i = 0; i < nframes; i++) { - if (trigger[i] >= threshold) - plugin->hold = input[i]; - plugin->last_trigger = trigger[i]; - output[i] = plugin->hold; - } - - /* Continuous triggering off - * (only sample on first frame with trigger > threshold) */ - } else { - for (i = 0; i < nframes; i++) { - if (plugin->last_trigger < threshold && trigger[i] >= threshold) - plugin->hold = input[i]; - plugin->last_trigger = trigger[i]; - output[i] = plugin->hold; - } - } -} - -void -SH_run_ar(LADSPA_Handle instance, unsigned long nframes) -{ - SH* const plugin = (SH*)instance; - const LADSPA_Data* const input = plugin->input_buffer; - const LADSPA_Data* const trigger = plugin->trigger_buffer; - const LADSPA_Data* const threshold = plugin->threshold_buffer; - const LADSPA_Data* const continuous = plugin->continuous_buffer; - LADSPA_Data* const output = plugin->output_buffer; - - unsigned long i; - - for (i = 0; i < nframes; i++) { - if (continuous[0] != 0) { - /* Continuous triggering on (sample while trigger > threshold) */ - if (trigger[i] >= threshold[i]) - plugin->hold = input[i]; - } else { - /* Continuous triggering off - * (only sample on first frame with trigger > threshold) */ - if (plugin->last_trigger < threshold[i] && trigger[i] >= threshold[i]) - plugin->hold = input[i]; - } - - plugin->last_trigger = trigger[i]; - output[i] = plugin->hold; - } -} - -void -SH_cleanup(LADSPA_Handle instance) -{ - free(instance); -} - -LADSPA_Descriptor* SH_cr_desc = NULL; -LADSPA_Descriptor* SH_ar_desc = NULL; - -/* Called automatically when the plugin library is first loaded. */ -void -_init() -{ - char** port_names; - LADSPA_PortDescriptor* port_descriptors; - LADSPA_PortRangeHint* port_range_hints; - - SH_cr_desc = (LADSPA_Descriptor*)malloc(sizeof(LADSPA_Descriptor)); - SH_ar_desc = (LADSPA_Descriptor*)malloc(sizeof(LADSPA_Descriptor)); - - if (SH_cr_desc) { - SH_cr_desc->UniqueID = SH_ID; - SH_cr_desc->Label = strdup("sh_cr"); - SH_cr_desc->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE; - SH_cr_desc->Name = strdup("Sample and Hold (CR Threshold)"); - SH_cr_desc->Maker = strdup("Thorsten Wilms"); - SH_cr_desc->Copyright = strdup("GPL"); - SH_cr_desc->PortCount = SH_NUM_PORTS; - port_descriptors = (LADSPA_PortDescriptor*)calloc(SH_NUM_PORTS, sizeof(LADSPA_PortDescriptor)); - SH_cr_desc->PortDescriptors = (const LADSPA_PortDescriptor*)port_descriptors; - port_descriptors[SH_INPUT] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO; - port_descriptors[SH_TRIGGER] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO; - port_descriptors[SH_THRESHOLD] = LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL; - port_descriptors[SH_CONTINUOUS] = LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL; - port_descriptors[SH_OUTPUT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO; - port_names = (char**)calloc(SH_NUM_PORTS, sizeof(char*)); - SH_cr_desc->PortNames = (const char**)port_names; - port_names[SH_INPUT] = strdup("Input"); - port_names[SH_TRIGGER] = strdup("Trigger"); - port_names[SH_THRESHOLD] = strdup("Threshold"); - port_names[SH_CONTINUOUS] = strdup("Continuous Triggering"); - port_names[SH_OUTPUT] = strdup("Output"); - port_range_hints = ((LADSPA_PortRangeHint *) - calloc(SH_NUM_PORTS, sizeof(LADSPA_PortRangeHint))); - SH_cr_desc->PortRangeHints = (const LADSPA_PortRangeHint*)port_range_hints; - port_range_hints[SH_INPUT].HintDescriptor = 0; - port_range_hints[SH_TRIGGER].HintDescriptor = 0; - port_range_hints[SH_THRESHOLD].HintDescriptor = 0; - port_range_hints[SH_CONTINUOUS].HintDescriptor = LADSPA_HINT_TOGGLED; - port_range_hints[SH_OUTPUT].HintDescriptor = 0; - SH_cr_desc->instantiate = SH_instantiate; - SH_cr_desc->connect_port = SH_connect_port; - SH_cr_desc->activate = SH_activate; - SH_cr_desc->run = SH_run_cr; - SH_cr_desc->run_adding = NULL; - SH_cr_desc->set_run_adding_gain = NULL; - SH_cr_desc->deactivate = NULL; - SH_cr_desc->cleanup = SH_cleanup; - } - - if (SH_ar_desc) { - SH_ar_desc->UniqueID = SH_ID+1; - SH_ar_desc->Label = strdup("sh_ar"); - SH_ar_desc->Properties = LADSPA_PROPERTY_HARD_RT_CAPABLE; - SH_ar_desc->Name = strdup("Sample and Hold (AR Threshold)"); - SH_ar_desc->Maker = strdup("Thorsten Wilms"); - SH_ar_desc->Copyright = strdup("GPL"); - SH_ar_desc->PortCount = SH_NUM_PORTS; - port_descriptors = (LADSPA_PortDescriptor*)calloc(SH_NUM_PORTS, sizeof(LADSPA_PortDescriptor)); - SH_ar_desc->PortDescriptors = (const LADSPA_PortDescriptor*)port_descriptors; - port_descriptors[SH_INPUT] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO; - port_descriptors[SH_TRIGGER] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO; - port_descriptors[SH_THRESHOLD] = LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO; - port_descriptors[SH_CONTINUOUS] = LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL; - port_descriptors[SH_OUTPUT] = LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO; - port_names = (char**)calloc(SH_NUM_PORTS, sizeof(char*)); - SH_ar_desc->PortNames = (const char**)port_names; - port_names[SH_INPUT] = strdup("Input"); - port_names[SH_TRIGGER] = strdup("Trigger"); - port_names[SH_THRESHOLD] = strdup("Threshold"); - port_names[SH_CONTINUOUS] = strdup("Continuous Triggering"); - port_names[SH_OUTPUT] = strdup("Output"); - port_range_hints = ((LADSPA_PortRangeHint *) - calloc(SH_NUM_PORTS, sizeof(LADSPA_PortRangeHint))); - SH_ar_desc->PortRangeHints = (const LADSPA_PortRangeHint*)port_range_hints; - port_range_hints[SH_INPUT].HintDescriptor = 0; - port_range_hints[SH_TRIGGER].HintDescriptor = 0; - port_range_hints[SH_THRESHOLD].HintDescriptor = 0; - port_range_hints[SH_CONTINUOUS].HintDescriptor = LADSPA_HINT_TOGGLED; - port_range_hints[SH_OUTPUT].HintDescriptor = 0; - SH_ar_desc->instantiate = SH_instantiate; - SH_ar_desc->connect_port = SH_connect_port; - SH_ar_desc->activate = SH_activate; - SH_ar_desc->run = SH_run_ar; - SH_ar_desc->run_adding = NULL; - SH_ar_desc->set_run_adding_gain = NULL; - SH_ar_desc->deactivate = NULL; - SH_ar_desc->cleanup = SH_cleanup; - } -} - -void -SH_delete_descriptor(LADSPA_Descriptor* psDescriptor) -{ - unsigned long lIndex; - if (psDescriptor) { - free((char*)psDescriptor->Label); - free((char*)psDescriptor->Name); - free((char*)psDescriptor->Maker); - free((char*)psDescriptor->Copyright); - free((LADSPA_PortDescriptor *)psDescriptor->PortDescriptors); - for (lIndex = 0; lIndex < psDescriptor->PortCount; lIndex++) - free((char*)(psDescriptor->PortNames[lIndex])); - free((char**)psDescriptor->PortNames); - free((LADSPA_PortRangeHint *)psDescriptor->PortRangeHints); - free(psDescriptor); - } -} - -/* Called automatically when the library is unloaded. */ -void -_fini() -{ - SH_delete_descriptor(SH_cr_desc); - SH_delete_descriptor(SH_ar_desc); -} - -/* Return a descriptor of the requested plugin type. */ -const LADSPA_Descriptor* -ladspa_descriptor(unsigned long Index) -{ - switch (Index) { - case 0: - return SH_cr_desc; - case 1: - return SH_ar_desc; - default: - return NULL; - } -} - |