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| author | Loren Merritt <lorenm@u.washington.edu> | 2008-07-15 23:01:15 +0000 |
|---|---|---|
| committer | Loren Merritt <lorenm@u.washington.edu> | 2008-07-15 23:01:15 +0000 |
| commit | 1a32536737ce600af24dd325e6bb4f61c2463cf3 (patch) | |
| tree | 6ca3d42e3f46d1b3e309d27d036772cb9f88aac4 /libavcodec/vorbis_dec.c | |
| parent | 589790c29413ded9d52b03a160bd2beade435629 (diff) | |
| download | ffmpeg-1a32536737ce600af24dd325e6bb4f61c2463cf3.tar.gz | |
unroll another common case in vorbis_residue_decode
Originally committed as revision 14250 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vorbis_dec.c')
| -rw-r--r-- | libavcodec/vorbis_dec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/vorbis_dec.c b/libavcodec/vorbis_dec.c index d4a5402d86..2143db76e5 100644 --- a/libavcodec/vorbis_dec.c +++ b/libavcodec/vorbis_dec.c @@ -1330,6 +1330,14 @@ static int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr, uint_fa vec[voffs+k ]+=codebook.codevectors[coffs ]; // FPMATH vec[voffs+k+vlen]+=codebook.codevectors[coffs+1]; // FPMATH } + } else if(dim==4) { + for(k=0;k<step;++k, voffs+=2) { + coffs=get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3) * 4; + vec[voffs ]+=codebook.codevectors[coffs ]; // FPMATH + vec[voffs+1 ]+=codebook.codevectors[coffs+2]; // FPMATH + vec[voffs+vlen ]+=codebook.codevectors[coffs+1]; // FPMATH + vec[voffs+vlen+1]+=codebook.codevectors[coffs+3]; // FPMATH + } } else for(k=0;k<step;++k) { coffs=get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3) * dim; |