From 5c65660506fc3379d1b7d290042b790c010ce04c Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 16 Apr 2008 14:59:23 +0000
Subject: [PATCH] Avoid reverse addressing, not sure if this is faster or
slower but people maybe are confused by it. The code needs to be optimized
anyway.
Originally committed as revision 12854 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/nellymoserdec.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libavcodec/nellymoserdec.c b/libavcodec/nellymoserdec.c
index b06f7b1b6bb..8a829b3f3a8 100644
--- a/libavcodec/nellymoserdec.c
+++ b/libavcodec/nellymoserdec.c
@@ -92,7 +92,7 @@ static const int16_t nelly_delta_table[32] = {
typedef struct NellyMoserDecodeContext {
AVCodecContext* avctx;
DECLARE_ALIGNED_16(float,float_buf[NELLY_SAMPLES]);
- float state[64];
+ float state[128];
AVRandomState random_state;
GetBitContext gb;
int add_bias;
@@ -121,12 +121,12 @@ static void overlap_and_window(NellyMoserDecodeContext *s, float *state, float *
while (bot < NELLY_BUF_LEN/2) {
audio[bot] = ( a_in[bot]*sine_window[bot]+state[bot]*sine_window[top])/s->scale_bias + s->add_bias;
- audio[top] = ( a_in[top]*sine_window[top]+state[bot]*sine_window[bot])/s->scale_bias + s->add_bias;
- state[bot] = a_in[bot + NELLY_BUF_LEN];
+ audio[top] = ( a_in[top]*sine_window[top]+state[top]*sine_window[bot])/s->scale_bias + s->add_bias;
bot++;
top--;
}
+ memcpy(state, a_in + NELLY_BUF_LEN, sizeof(float)*NELLY_BUF_LEN);
}
static int sum_bits(short *buf, short shift, short off)
--
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