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#ifndef foopulseenvelopehfoo
#define foopulseenvelopehfoo
/* $Id$ */
/***
This file is part of PulseAudio.
Copyright 2007 Lennart Poettering
PulseAudio 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.
PulseAudio 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 PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <pulsecore/macro.h>
#include <pulsecore/memchunk.h>
#include <pulse/sample.h>
#define PA_ENVELOPE_POINTS_MAX 4U
typedef struct pa_envelope pa_envelope;
typedef struct pa_envelope_item pa_envelope_item;
typedef struct pa_envelope_def {
unsigned n_points;
pa_usec_t points_x[PA_ENVELOPE_POINTS_MAX];
struct {
int32_t i[PA_ENVELOPE_POINTS_MAX];
float f[PA_ENVELOPE_POINTS_MAX];
} points_y;
} pa_envelope_def;
pa_envelope *pa_envelope_new(const pa_sample_spec *ss);
void pa_envelope_free(pa_envelope *e);
pa_envelope_item *pa_envelope_add(pa_envelope *e, const pa_envelope_def *def);
pa_envelope_item *pa_envelope_replace(pa_envelope *e, pa_envelope_item *i, const pa_envelope_def *def);
void pa_envelope_remove(pa_envelope *e, pa_envelope_item *i);
void pa_envelope_apply(pa_envelope *e, pa_memchunk *chunk);
void pa_envelope_rewind(pa_envelope *e, size_t n_bytes);
#endif
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