From f44ba092651aa75055e109e04b4164ea92ae7fdc Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 19 Jun 2006 21:53:48 +0000 Subject: big s/polyp/pulse/g git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/pulsecore/memchunk.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/pulsecore/memchunk.h (limited to 'src/pulsecore/memchunk.h') diff --git a/src/pulsecore/memchunk.h b/src/pulsecore/memchunk.h new file mode 100644 index 00000000..1b26c2e6 --- /dev/null +++ b/src/pulsecore/memchunk.h @@ -0,0 +1,45 @@ +#ifndef foomemchunkhfoo +#define foomemchunkhfoo + +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + 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 + +/* A memchunk describes a part of a memblock. In contrast to the memblock, a + * memchunk is not allocated dynamically or reference counted, instead + * it is usually stored on the stack and copied around */ + +typedef struct pa_memchunk { + pa_memblock *memblock; + size_t index, length; +} pa_memchunk; + +/* Make a memchunk writable, i.e. make sure that the caller may have + * exclusive access to the memblock and it is not read_only. If needed + * the memblock in the structure is replaced by a copy. */ +void pa_memchunk_make_writable(pa_memchunk *c, pa_memblock_stat *s, size_t min); + +/* Invalidate a memchunk. This does not free the cotaining memblock, + * but sets all members to zero. */ +void pa_memchunk_reset(pa_memchunk *c); + +#endif -- cgit