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mlt/src/modules/jackrack/plugin_desc.c

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/*
* JACK Rack
*
* Original:
* Copyright (C) Robert Ham 2002, 2003 (node@users.sourceforge.net)
*
* Modification for MLT:
* Copyright (C) 2004 Ushodaya Enterprises Limited
* Author: Dan Dennedy <dan@dennedy.org>
*
* This program 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 program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <math.h>
#include <float.h>
#include <string.h>
#include "plugin_desc.h"
#include "plugin.h"
#define set_string_property(property, value) \
\
if (property) \
g_free (property); \
\
if (value) \
(property) = g_strdup (value); \
else \
(property) = NULL;
void
plugin_desc_set_ports (plugin_desc_t * pd,
unsigned long port_count,
const LADSPA_PortDescriptor * port_descriptors,
const LADSPA_PortRangeHint * port_range_hints,
const char * const * port_names);
static void
plugin_desc_init (plugin_desc_t * pd)
{
pd->object_file = NULL;
pd->id = 0;
pd->name = NULL;
pd->properties = 0;
pd->channels = 0;
pd->port_count = 0;
pd->port_descriptors = NULL;
pd->port_range_hints = NULL;
pd->audio_input_port_indicies = NULL;
pd->audio_output_port_indicies = NULL;
pd->audio_aux_port_indicies = NULL;
pd->control_port_count = 0;
pd->control_port_indicies = NULL;
pd->aux_channels = 0;
pd->aux_are_input = TRUE;
}
static void
plugin_desc_free_ports (plugin_desc_t * pd)
{
if (pd->port_count)
{
g_free (pd->port_descriptors);
g_free (pd->port_range_hints);
pd->port_descriptors = NULL;
pd->port_range_hints = NULL;
pd->port_count = 0;
}
}
static void
plugin_desc_free (plugin_desc_t * pd)
{
plugin_desc_set_object_file (pd, NULL);
plugin_desc_set_name (pd, NULL);
plugin_desc_free_ports (pd);
}
plugin_desc_t *
plugin_desc_new ()
{
plugin_desc_t * pd;
pd = g_malloc (sizeof (plugin_desc_t));
plugin_desc_init (pd);
return pd;
}
plugin_desc_t *
plugin_desc_new_with_descriptor (const char * object_file,
unsigned long index,
const LADSPA_Descriptor * descriptor)
{
plugin_desc_t * pd;
pd = plugin_desc_new ();
plugin_desc_set_object_file (pd, object_file);
plugin_desc_set_index (pd, index);
plugin_desc_set_id (pd, descriptor->UniqueID);
plugin_desc_set_name (pd, descriptor->Name);
plugin_desc_set_properties (pd, descriptor->Properties);
plugin_desc_set_ports (pd,
descriptor->PortCount,
descriptor->PortDescriptors,
descriptor->PortRangeHints,
descriptor->PortNames);
pd->rt = LADSPA_IS_HARD_RT_CAPABLE(pd->properties) ? TRUE : FALSE;
return pd;
}
void
plugin_desc_destroy (plugin_desc_t * pd)
{
plugin_desc_free (pd);
g_free (pd);
}
void
plugin_desc_set_object_file (plugin_desc_t * pd, const char * object_file)
{
set_string_property (pd->object_file, object_file);
}
void
plugin_desc_set_index (plugin_desc_t * pd, unsigned long index)
{
pd->index = index;
}
void
plugin_desc_set_id (plugin_desc_t * pd, unsigned long id)
{
pd->id = id;
}
void
plugin_desc_set_name (plugin_desc_t * pd, const char * name)
{
set_string_property (pd->name, name);
}
void
plugin_desc_set_properties (plugin_desc_t * pd, LADSPA_Properties properties)
{
pd->properties = properties;
}
static void
plugin_desc_add_audio_port_index (unsigned long ** indicies,
unsigned long * current_port_count,
unsigned long index)
{
(*current_port_count)++;
if (*current_port_count == 0)
*indicies = g_malloc (sizeof (unsigned long) * *current_port_count);
else
*indicies = g_realloc (*indicies, sizeof (unsigned long) * *current_port_count);
(*indicies)[*current_port_count - 1] = index;
}
static void
plugin_desc_set_port_counts (plugin_desc_t * pd)
{
unsigned long i;
unsigned long icount = 0;
unsigned long ocount = 0;
for (i = 0; i < pd->port_count; i++)
{
if (LADSPA_IS_PORT_AUDIO (pd->port_descriptors[i]))
{
if (LADSPA_IS_PORT_INPUT (pd->port_descriptors[i]))
plugin_desc_add_audio_port_index (&pd->audio_input_port_indicies, &icount, i);
else
plugin_desc_add_audio_port_index (&pd->audio_output_port_indicies, &ocount, i);
}
else
{
if (LADSPA_IS_PORT_OUTPUT (pd->port_descriptors[i]))
continue;
pd->control_port_count++;
if (pd->control_port_count == 0)
pd->control_port_indicies = g_malloc (sizeof (unsigned long) * pd->control_port_count);
else
pd->control_port_indicies = g_realloc (pd->control_port_indicies,
sizeof (unsigned long) * pd->control_port_count);
pd->control_port_indicies[pd->control_port_count - 1] = i;
}
}
if (icount == ocount)
pd->channels = icount;
else
{ /* deal with auxilliary ports */
unsigned long ** port_indicies;
unsigned long port_count;
unsigned long i, j;
if (icount > ocount)
{
pd->channels = ocount;
pd->aux_channels = icount - ocount;
pd->aux_are_input = TRUE;
port_indicies = &pd->audio_input_port_indicies;
port_count = icount;
}
else
{
pd->channels = icount;
pd->aux_channels = ocount - icount;
pd->aux_are_input = FALSE;
port_indicies = &pd->audio_output_port_indicies;
port_count = ocount;
}
/* allocate indicies */
pd->audio_aux_port_indicies = g_malloc (sizeof (unsigned long) * pd->aux_channels);
/* copy indicies */
for (i = pd->channels, j = 0; i < port_count; i++, j++)
pd->audio_aux_port_indicies[j] = (*port_indicies)[i];
/* shrink the main indicies to only have channels indicies */
*port_indicies = g_realloc (*port_indicies, sizeof (unsigned long) * pd->channels);
}
}
void
plugin_desc_set_ports (plugin_desc_t * pd,
unsigned long port_count,
const LADSPA_PortDescriptor * port_descriptors,
const LADSPA_PortRangeHint * port_range_hints,
const char * const * port_names)
{
unsigned long i;
plugin_desc_free_ports (pd);
if (!port_count)
return;
pd->port_count = port_count;
pd->port_descriptors = g_malloc (sizeof (LADSPA_PortDescriptor) * port_count);
pd->port_range_hints = g_malloc (sizeof (LADSPA_PortRangeHint) * port_count);
pd->port_names = g_malloc (sizeof (char *) * port_count);
memcpy (pd->port_descriptors, port_descriptors, sizeof (LADSPA_PortDescriptor) * port_count);
memcpy (pd->port_range_hints, port_range_hints, sizeof (LADSPA_PortRangeHint) * port_count);
for (i = 0; i < port_count; i++)
pd->port_names[i] = g_strdup (port_names[i]);
plugin_desc_set_port_counts (pd);
}
LADSPA_Data
plugin_desc_get_default_control_value (plugin_desc_t * pd, unsigned long port_index, guint32 sample_rate)
{
LADSPA_Data upper, lower;
LADSPA_PortRangeHintDescriptor hint_descriptor;
hint_descriptor = pd->port_range_hints[port_index].HintDescriptor;
/* set upper and lower, possibly adjusted to the sample rate */
if (LADSPA_IS_HINT_SAMPLE_RATE(hint_descriptor)) {
upper = pd->port_range_hints[port_index].UpperBound * (LADSPA_Data) sample_rate;
lower = pd->port_range_hints[port_index].LowerBound * (LADSPA_Data) sample_rate;
} else {
upper = pd->port_range_hints[port_index].UpperBound;
lower = pd->port_range_hints[port_index].LowerBound;
}
if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor))
{
if (lower < FLT_EPSILON)
lower = FLT_EPSILON;
}
if (LADSPA_IS_HINT_HAS_DEFAULT(hint_descriptor)) {
if (LADSPA_IS_HINT_DEFAULT_MINIMUM(hint_descriptor)) {
return lower;
} else if (LADSPA_IS_HINT_DEFAULT_LOW(hint_descriptor)) {
if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) {
return exp(log(lower) * 0.75 + log(upper) * 0.25);
} else {
return lower * 0.75 + upper * 0.25;
}
} else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(hint_descriptor)) {
if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) {
return exp(log(lower) * 0.5 + log(upper) * 0.5);
} else {
return lower * 0.5 + upper * 0.5;
}
} else if (LADSPA_IS_HINT_DEFAULT_HIGH(hint_descriptor)) {
if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) {
return exp(log(lower) * 0.25 + log(upper) * 0.75);
} else {
return lower * 0.25 + upper * 0.75;
}
} else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(hint_descriptor)) {
return upper;
} else if (LADSPA_IS_HINT_DEFAULT_0(hint_descriptor)) {
return 0.0;
} else if (LADSPA_IS_HINT_DEFAULT_1(hint_descriptor)) {
if (LADSPA_IS_HINT_SAMPLE_RATE(hint_descriptor)) {
return (LADSPA_Data) sample_rate;
} else {
return 1.0;
}
} else if (LADSPA_IS_HINT_DEFAULT_100(hint_descriptor)) {
if (LADSPA_IS_HINT_SAMPLE_RATE(hint_descriptor)) {
return 100.0 * (LADSPA_Data) sample_rate;
} else {
return 100.0;
}
} else if (LADSPA_IS_HINT_DEFAULT_440(hint_descriptor)) {
if (LADSPA_IS_HINT_SAMPLE_RATE(hint_descriptor)) {
return 440.0 * (LADSPA_Data) sample_rate;
} else {
return 440.0;
}
}
} else { /* try and find a reasonable default */
if (LADSPA_IS_HINT_BOUNDED_BELOW(hint_descriptor)) {
return lower;
} else if (LADSPA_IS_HINT_BOUNDED_ABOVE(hint_descriptor)) {
return upper;
}
}
return 0.0;
}
LADSPA_Data
plugin_desc_change_control_value (plugin_desc_t * pd,
unsigned long control_index,
LADSPA_Data value,
guint32 old_sample_rate,
guint32 new_sample_rate)
{
if (LADSPA_IS_HINT_SAMPLE_RATE (pd->port_range_hints[control_index].HintDescriptor))
{
LADSPA_Data old_sr, new_sr;
old_sr = (LADSPA_Data) old_sample_rate;
new_sr = (LADSPA_Data) new_sample_rate;
value /= old_sr;
value *= new_sr;
}
return value;
}
gint
plugin_desc_get_copies (plugin_desc_t * pd, unsigned long rack_channels)
{
gint copies = 1;
if (pd->channels > rack_channels)
return 0;
while (pd->channels * copies < rack_channels)
copies++;
if (pd->channels * copies > rack_channels)
return 0;
return copies;
}
/* EOF */
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