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| author | Monty <xiphmont@xiph.org> | 1999-10-12 08:38:04 +0000 |
|---|---|---|
| committer | Monty <xiphmont@xiph.org> | 1999-10-12 08:38:04 +0000 |
| commit | dda671b88d0b4a5c156c55baa58940c944b2148f (patch) | |
| tree | 35f57fd3a2f71f51a88578821e3c143797dc7262 /lib/synthesis.c | |
| parent | 0024760a1024769fa7d26939f1291c45c36fd51a (diff) | |
| download | libvorbis-git-dda671b88d0b4a5c156c55baa58940c944b2148f.tar.gz | |
Commit includes:
Major speed improvement through lpc->spectrum optimizations (roughly
6x faster decode).
Short blocks are now being used.
Fixed artifact due to overlap/add bug (was using the wrong window to
overlap long blocks )
Monty
svn path=/trunk/vorbis/; revision=144
Diffstat (limited to 'lib/synthesis.c')
| -rw-r--r-- | lib/synthesis.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/lib/synthesis.c b/lib/synthesis.c index 5faa7051..e32d32b1 100644 --- a/lib/synthesis.c +++ b/lib/synthesis.c @@ -33,7 +33,6 @@ int vorbis_synthesis(vorbis_block *vb,ogg_packet *op){ vorbis_info *vi=vd->vi; oggpack_buffer *opb=&vb->opb; lpc_lookup *vl; - double *window; int spectral_order; int n,i; @@ -59,10 +58,6 @@ int vorbis_synthesis(vorbis_block *vb,ogg_packet *op){ n=vb->pcmend=vi->blocksize[vb->W]; vb->multend=vb->pcmend/vi->envelopesa; - /* we don't know the size of the following window, but we don't need - it yet. We only use the first half of the window */ - window=vb->vd->window[vb->W][vb->lW][0]; - /* recover the time envelope */ /*if(_ve_envelope_decode(vb)<0)return(-1);*/ @@ -84,7 +79,7 @@ int vorbis_synthesis(vorbis_block *vb,ogg_packet *op){ vorbis_lpc_apply(vb->pcm[i],lpc,vb->amp[i],vl); /* MDCT->time */ - mdct_backward(&vb->vd->vm[vb->W],vb->pcm[i],vb->pcm[i],window); + mdct_backward(&vb->vd->vm[vb->W],vb->pcm[i],vb->pcm[i]); /* apply time domain envelope */ /*_ve_envelope_apply(vb,1);*/ |