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| author | Måns Rullgård <mans@mansr.com> | 2010-04-12 11:14:51 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2010-04-12 11:14:51 +0000 |
| commit | b92d483bac3c833430a48eefbd0bfbe636772c27 (patch) | |
| tree | 6231d3294e02c3e47473641a96be33f2d253105b | |
| parent | 0dc7df28dd50167722550fb20c57327398e32e9f (diff) | |
| download | ffmpeg-b92d483bac3c833430a48eefbd0bfbe636772c27.tar.gz | |
DCA: use a local variable for loop boundary
This prevents gcc reloading the value from memory on each iteration
of the loop.
Originally committed as revision 22848 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/dca.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/dca.c b/libavcodec/dca.c index 596756c79f..7a6841d49c 100644 --- a/libavcodec/dca.c +++ b/libavcodec/dca.c @@ -757,6 +757,7 @@ static void qmf_32_subbands(DCAContext * s, int chans, const float *prCoeff; int i; + int sb_act = s->subband_activity[chans]; int subindex; scale *= sqrt(1/8.0); @@ -770,7 +771,7 @@ static void qmf_32_subbands(DCAContext * s, int chans, /* Reconstructed channel sample index */ for (subindex = 0; subindex < 8; subindex++) { /* Load in one sample from each subband and clear inactive subbands */ - for (i = 0; i < s->subband_activity[chans]; i++){ + for (i = 0; i < sb_act; i++){ uint32_t v = AV_RN32A(&samples_in[i][subindex]) ^ ((i-1)&2)<<30; AV_WN32A(&s->raXin[i], v); } |