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| author | Ian Braithwaite <ian@braithwaite.dk> | 2007-03-26 10:03:57 +0000 |
|---|---|---|
| committer | Benjamin Larsson <banan@ludd.ltu.se> | 2007-03-26 10:03:57 +0000 |
| commit | 1890c2acf48eb6471d812915db092e32ed5c9b14 (patch) | |
| tree | 516242e46b8758467267c56ef1476bb560001901 /libavcodec/wmaenc.c | |
| parent | f39c3c885599a3a30abbbca698480b033670ec86 (diff) | |
| download | ffmpeg-1890c2acf48eb6471d812915db092e32ed5c9b14.tar.gz | |
Optimize by building the mdct window and multipying/adding at the same time.
Patch by Ian Braithwaite ian .. braithwaite . dk
[Ffmpeg-devel] WMA decoder speedup 2007-03-22 22:56
Originally committed as revision 8526 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/wmaenc.c')
| -rw-r--r-- | libavcodec/wmaenc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c index 4fe3083b8c..e902a6aff4 100644 --- a/libavcodec/wmaenc.c +++ b/libavcodec/wmaenc.c @@ -92,8 +92,8 @@ static void apply_window_and_mdct(AVCodecContext * avctx, signed short * audio, memcpy(s->output, s->frame_out[channel], sizeof(float)*window_len); j = channel; for (i = 0; i < len; i++, j += avctx->channels){ - s->output[i+window_len] = audio[j] / n * win[i]; - s->frame_out[channel][i] = audio[j] / n * win[window_len - i - 1]; + s->output[i+window_len] = audio[j] / n * win[window_len - i - 1]; + s->frame_out[channel][i] = audio[j] / n * win[i]; } ff_mdct_calc(&s->mdct_ctx[window_index], s->coefs[channel], s->output, s->mdct_tmp); } |