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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-02-10 22:07:09 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-02-10 22:07:09 +0000
commit6bbe77a79ad7d82e11ab0e76fe14261573a10f71 (patch)
tree8d57b4e7c253784635d171cfc0e351739cb035b1 /include
parent350211381a270fc6f5e02d3a75cbf6bf99152ec8 (diff)
pcm: Constify write buffers
Mark the write buffers as const - they won't be modified and this is friendlier to applications.
Diffstat (limited to 'include')
-rw-r--r--include/tinyalsa/asoundlib.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/tinyalsa/asoundlib.h b/include/tinyalsa/asoundlib.h
index a6d5436..cac2786 100644
--- a/include/tinyalsa/asoundlib.h
+++ b/include/tinyalsa/asoundlib.h
@@ -133,13 +133,13 @@ int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail,
* Will start playback on the first write or on a write that
* occurs after a fifo underrun.
*/
-int pcm_write(struct pcm *pcm, void *data, unsigned int count);
+int pcm_write(struct pcm *pcm, const void *data, unsigned int count);
int pcm_read(struct pcm *pcm, void *data, unsigned int count);
/*
* mmap() support.
*/
-int pcm_mmap_write(struct pcm *pcm, void *data, unsigned int count);
+int pcm_mmap_write(struct pcm *pcm, const void *data, unsigned int count);
int pcm_mmap_begin(struct pcm *pcm, void **areas, unsigned int *offset,
unsigned int *frames);
int pcm_mmap_commit(struct pcm *pcm, unsigned int offset, unsigned int frames);