mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-18 06:59:57 -05:00
0e436a6926
is to allocate all audio memory blocks from a per-process memory pool which is available as read-only SHM segment to other local processes. Then, instead of writing the actual audio data to the socket just write references to this shared memory pool. To work optimally all memory blocks should now be of type PA_MEMBLOCK_POOL or PA_MEMBLOCK_POOL_EXTERNAL. The function pa_memblock_new() now generates memory blocks of this type by default. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1266 fefdeb5f-60dc-0310-8127-8f9354f1896f
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#ifndef foosampleutilhfoo
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#define foosampleutilhfoo
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/* $Id$ */
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/***
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This file is part of PulseAudio.
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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 published
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by the Free Software Foundation; either version 2 of the License,
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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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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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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 <pulse/sample.h>
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#include <pulse/volume.h>
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#include <pulsecore/memblock.h>
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#include <pulsecore/memchunk.h>
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pa_memblock *pa_silence_memblock(pa_memblock* b, const pa_sample_spec *spec);
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pa_memblock *pa_silence_memblock_new(pa_mempool *pool, const pa_sample_spec *spec, size_t length);
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void pa_silence_memchunk(pa_memchunk *c, const pa_sample_spec *spec);
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void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec);
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typedef struct pa_mix_info {
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pa_memchunk chunk;
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pa_cvolume volume;
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void *userdata;
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} pa_mix_info;
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size_t pa_mix(
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const pa_mix_info channels[],
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unsigned nchannels,
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void *data,
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size_t length,
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const pa_sample_spec *spec,
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const pa_cvolume *volume,
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int mute);
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void pa_volume_memchunk(
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pa_memchunk*c,
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const pa_sample_spec *spec,
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const pa_cvolume *volume);
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#endif
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