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core: Move pa_mix() into new file mix.c

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idea is to allow optimized code path (similar to volume code)
and rework/specialize mixing cases to enable runtime performance improvements

no functionality changes in this patch

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
This commit is contained in:
Peter Meerwald 2013-02-13 17:26:59 +01:00 • committed by Tanu Kaskinen
parent bc8b6eaf95
commit 95b64804ab
12 changed files with 746 additions and 675 deletions
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59
src/pulsecore/mix.h Normal file
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@ -0,0 +1,59 @@
#ifndef foomixhfoo
#define foomixhfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
Copyright 2013 Peter Meerwald <pmeerw@pmeerw.net>
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
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 <pulse/sample.h>
#include <pulse/volume.h>
#include <pulsecore/memchunk.h>
typedef struct pa_mix_info {
pa_memchunk chunk;
pa_cvolume volume;
void *userdata;
/* The following fields are used internally by pa_mix(), should
* not be initialised by the caller of pa_mix(). */
void *ptr;
union {
int32_t i;
float f;
} linear[PA_CHANNELS_MAX];
} pa_mix_info;
size_t pa_mix(
pa_mix_info channels[],
unsigned nchannels,
void *data,
size_t length,
const pa_sample_spec *spec,
const pa_cvolume *volume,
pa_bool_t mute);
void pa_volume_memchunk(
pa_memchunk*c,
const pa_sample_spec *spec,
const pa_cvolume *volume);
#endif