livetrax/libs/fluidsynth/src/fluid_tuning.c

/* FluidSynth - A Software Synthesizer
 *
 * Copyright (C) 2003  Peter Hanappe and others.
 *
 * This library 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 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */


#include "fluid_tuning.h"
#include "fluid_sys.h"


fluid_tuning_t *new_fluid_tuning(const char *name, int bank, int prog)
{
    fluid_tuning_t *tuning;
    int i;

    tuning = FLUID_NEW(fluid_tuning_t);

    if(tuning == NULL)
    {
        FLUID_LOG(FLUID_PANIC, "Out of memory");
        return NULL;
    }

    FLUID_MEMSET(tuning, 0, sizeof(fluid_tuning_t));

    if(fluid_tuning_set_name(tuning, name) != FLUID_OK)
    {
        delete_fluid_tuning(tuning);
        return NULL;
    }

    tuning->bank = bank;
    tuning->prog = prog;

    for(i = 0; i < 128; i++)
    {
        tuning->pitch[i] = i * 100.0;
    }

    fluid_atomic_int_set(&tuning->refcount, 1);         /* Start with a refcount of 1 */

    return tuning;
}

/* Duplicate a tuning */
fluid_tuning_t *
fluid_tuning_duplicate(fluid_tuning_t *tuning)
{
    fluid_tuning_t *new_tuning;
    int i;

    new_tuning = FLUID_NEW(fluid_tuning_t);

    if(!new_tuning)
    {
        FLUID_LOG(FLUID_PANIC, "Out of memory");
        return NULL;
    }

    FLUID_MEMSET(new_tuning, 0, sizeof(fluid_tuning_t));

    if(fluid_tuning_set_name(new_tuning, tuning->name) != FLUID_OK)
    {
        delete_fluid_tuning(new_tuning);
        return NULL;
    }

    new_tuning->bank = tuning->bank;
    new_tuning->prog = tuning->prog;

    for(i = 0; i < 128; i++)
    {
        new_tuning->pitch[i] = tuning->pitch[i];
    }

    fluid_atomic_int_set(&new_tuning->refcount, 1);     /* Start with a refcount of 1 */

    return new_tuning;
}

void
delete_fluid_tuning(fluid_tuning_t *tuning)
{
    fluid_return_if_fail(tuning != NULL);

    FLUID_FREE(tuning->name);
    FLUID_FREE(tuning);
}

/* Add a reference to a tuning object */
void
fluid_tuning_ref(fluid_tuning_t *tuning)
{
    fluid_return_if_fail(tuning != NULL);

    fluid_atomic_int_inc(&tuning->refcount);
}

/* Unref a tuning object, when it reaches 0 it is deleted, returns TRUE if deleted */
int
fluid_tuning_unref(fluid_tuning_t *tuning, int count)
{
    fluid_return_val_if_fail(tuning != NULL, FALSE);

    /* Add and compare are separate, but that is OK, since refcount will only
     * reach 0 when there are no references and therefore no possibility of
     * another thread adding a reference in between */
    fluid_atomic_int_add(&tuning->refcount, -count);

    /* Delete when refcount reaches 0 */
    if(!fluid_atomic_int_get(&tuning->refcount))
    {
        delete_fluid_tuning(tuning);
        return TRUE;
    }
    else
    {
        return FALSE;
    }
}

int fluid_tuning_set_name(fluid_tuning_t *tuning, const char *name)
{
    if(tuning->name != NULL)
    {
        FLUID_FREE(tuning->name);
        tuning->name = NULL;
    }

    if(name != NULL)
    {
        tuning->name = FLUID_STRDUP(name);

        if(tuning->name == NULL)
        {
            FLUID_LOG(FLUID_ERR, "Out of memory");
            return FLUID_FAILED;
        }
    }

    return FLUID_OK;
}

char *fluid_tuning_get_name(fluid_tuning_t *tuning)
{
    return tuning->name;
}

void fluid_tuning_set_octave(fluid_tuning_t *tuning, const double *pitch_deriv)
{
    int i;

    for(i = 0; i < 128; i++)
    {
        tuning->pitch[i] = i * 100.0 + pitch_deriv[i % 12];
    }
}

void fluid_tuning_set_all(fluid_tuning_t *tuning, const double *pitch)
{
    int i;

    for(i = 0; i < 128; i++)
    {
        tuning->pitch[i] = pitch[i];
    }
}

void fluid_tuning_set_pitch(fluid_tuning_t *tuning, int key, double pitch)
{
    if((key >= 0) && (key < 128))
    {
        tuning->pitch[key] = pitch;
    }
}