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045c1d602d
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2445 fefdeb5f-60dc-0310-8127-8f9354f1896f
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#ifndef foopulseenvelopehfoo
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#define foopulseenvelopehfoo
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/* $Id$ */
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/***
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This file is part of PulseAudio.
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Copyright 2007 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <pulsecore/macro.h>
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#include <pulsecore/memchunk.h>
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#include <pulse/sample.h>
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#define PA_ENVELOPE_POINTS_MAX 4U
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typedef struct pa_envelope pa_envelope;
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typedef struct pa_envelope_item pa_envelope_item;
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typedef struct pa_envelope_def {
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unsigned n_points;
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pa_usec_t points_x[PA_ENVELOPE_POINTS_MAX];
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struct {
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int32_t i[PA_ENVELOPE_POINTS_MAX];
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float f[PA_ENVELOPE_POINTS_MAX];
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} points_y;
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} pa_envelope_def;
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pa_envelope *pa_envelope_new(const pa_sample_spec *ss);
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void pa_envelope_free(pa_envelope *e);
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pa_envelope_item *pa_envelope_add(pa_envelope *e, const pa_envelope_def *def);
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pa_envelope_item *pa_envelope_replace(pa_envelope *e, pa_envelope_item *i, const pa_envelope_def *def);
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void pa_envelope_remove(pa_envelope *e, pa_envelope_item *i);
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void pa_envelope_apply(pa_envelope *e, pa_memchunk *chunk);
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void pa_envelope_rewind(pa_envelope *e, size_t n_bytes);
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#endif
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