Module: libav Branch: master Commit: bf00a73ace9b1aba790b75dcb26d43adfceb769f
Author: Mans Rullgard <[email protected]> Committer: Mans Rullgard <[email protected]> Date: Wed Sep 28 21:00:35 2011 +0100 dca: clear inactive subbands only once in qmf_32_subbands() Writing zeros to the high entries in the array need only be done once as the cutoff position is constant throughout the loop. Signed-off-by: Mans Rullgard <[email protected]> --- libavcodec/dca.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/libavcodec/dca.c b/libavcodec/dca.c index db794a7..735d7ba 100644 --- a/libavcodec/dca.c +++ b/libavcodec/dca.c @@ -898,6 +898,9 @@ static void qmf_32_subbands(DCAContext * s, int chans, else /* Perfect reconstruction */ prCoeff = fir_32bands_perfect; + for (i = sb_act; i < 32; i++) + s->raXin[i] = 0.0; + /* Reconstructed channel sample index */ for (subindex = 0; subindex < 8; subindex++) { /* Load in one sample from each subband and clear inactive subbands */ @@ -905,8 +908,6 @@ static void qmf_32_subbands(DCAContext * s, int chans, uint32_t v = AV_RN32A(&samples_in[i][subindex]) ^ ((i-1)&2)<<30; AV_WN32A(&s->raXin[i], v); } - for (; i < 32; i++) - s->raXin[i] = 0.0; s->synth.synth_filter_float(&s->imdct, s->subband_fir_hist[chans], &s->hist_index[chans], _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
