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-rw-r--r--src/CrossFade.hxx5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/CrossFade.hxx b/src/CrossFade.hxx
index 3b9aa58cc..d30d06320 100644
--- a/src/CrossFade.hxx
+++ b/src/CrossFade.hxx
@@ -20,6 +20,8 @@
#ifndef MPD_CROSSFADE_HXX
#define MPD_CROSSFADE_HXX
+#include "Compiler.h"
+
struct AudioFormat;
struct music_chunk;
@@ -40,11 +42,12 @@ struct music_chunk;
* @return the number of chunks for crossfading, or 0 if cross fading
* should be disabled for this song change
*/
+gcc_pure
unsigned
cross_fade_calc(float duration, float total_time,
float mixramp_db, float mixramp_delay,
float replay_gain_db, float replay_gain_prev_db,
- char *mixramp_start, char *mixramp_prev_end,
+ const char *mixramp_start, const char *mixramp_prev_end,
AudioFormat af, AudioFormat old_format,
unsigned max_chunks);