From b20512d2a44fa789eab7fafc60f4cad6cb22ed71 Mon Sep 17 00:00:00 2001
From: Moritz Hanke <hanke@dkrz.de>
Date: Mon, 10 Dec 2012 13:46:54 +0100
Subject: [PATCH] unrolling in fill_acc
---
src/decode.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/src/decode.c b/src/decode.c
index 739c218..6787783 100644
--- a/src/decode.c
+++ b/src/decode.c
@@ -220,8 +220,25 @@ static inline void fill_acc(struct aec_stream *strm)
strm->avail_in -= b;
strm->state->bitp += b << 3;
- while (b--)
+
+ switch (b) {
+
+ case (7):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (6):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (5):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (4):
strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (3):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (2):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ case (1):
+ strm->state->acc = (strm->state->acc << 8) | *strm->next_in++;
+ };
+
}
static inline uint32_t direct_get(struct aec_stream *strm, unsigned int n)
--
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