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authorMichael Niedermayer <michaelni@gmx.at>2012-08-02 04:21:53 +0200
committerMichael Niedermayer <michaelni@gmx.at>2012-08-02 04:21:53 +0200
commit571572fcddc16ebe3d60054ae5a2db05800c1d6d (patch)
tree77b2fadc220bc7df13653d49446b9f981bfb98a8 /libavcodec/mpegaudio.h
parent98a2f4e87b5c9439cf66a36b1089c7168206f9b2 (diff)
mp3dec: adjust IMDCT scaling to avoid overflows
Fixes ticket268 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mpegaudio.h')
-rw-r--r--libavcodec/mpegaudio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/mpegaudio.h b/libavcodec/mpegaudio.h
index b829cd3f8a..b880b7a832 100644
--- a/libavcodec/mpegaudio.h
+++ b/libavcodec/mpegaudio.h
@@ -52,6 +52,8 @@
#define WFRAC_BITS 16 /* fractional bits for window */
#endif
+#define IMDCT_SCALAR 1.759
+
#define FRAC_ONE (1 << FRAC_BITS)
#define FIX(a) ((int)((a) * FRAC_ONE))