From 523b7eba19590652b7ba19c5bdd85dd257bfe4f7 Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Mon, 27 Jun 2011 14:29:33 -0400
Subject: ac3enc: clip coefficients after MDCT.

This ensures that any processing between the MDCT and exponent extraction will
be using clipped coefficients.
---
 libavcodec/ac3enc_fixed.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'libavcodec/ac3enc_fixed.c')

diff --git a/libavcodec/ac3enc_fixed.c b/libavcodec/ac3enc_fixed.c
index d55720e..ea3a46c 100644
--- a/libavcodec/ac3enc_fixed.c
+++ b/libavcodec/ac3enc_fixed.c
@@ -104,6 +104,15 @@ static void scale_coefficients(AC3EncodeContext *s)
 }
 
 
+/**
+ * Clip MDCT coefficients to allowable range.
+ */
+static void clip_coefficients(DSPContext *dsp, int32_t *coef, unsigned int len)
+{
+    dsp->vector_clip_int32(coef, coef, COEF_MIN, COEF_MAX, len);
+}
+
+
 static av_cold int ac3_fixed_encode_init(AVCodecContext *avctx)
 {
     AC3EncodeContext *s = avctx->priv_data;
-- 
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