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authorLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
committerLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
commitf44ba092651aa75055e109e04b4164ea92ae7fdc (patch)
tree5dfe076191b32946e78edf64d584d0a65f320013 /src/pulsecore/memchunk.h
parentdd21f11deda64e65a6f75817496534c2c9dda1a8 (diff)
big s/polyp/pulse/g
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/memchunk.h')
-rw-r--r--src/pulsecore/memchunk.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/pulsecore/memchunk.h b/src/pulsecore/memchunk.h
new file mode 100644
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+++ b/src/pulsecore/memchunk.h
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+#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 <pulsecore/memblock.h>
+
+/* 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