devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

A little improvement on Vorbis block synthesis.

Browse source 
Added myself to the list of contributors.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6664 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Pedro Vasconcelos 2005-06-10 22:34:57 +00:00
parent cd1d87c8cf
commit 6b9350b4d3
7 changed files with 204 additions and 107 deletions
Download patch file Download diff file Expand all files Collapse all files

12
apps/codecs/Tremor/mapping0.c
View file

@ -202,10 +202,6 @@ static int mapping0_inverse(vorbis_block *vb,vorbis_look_mapping *l){
int nonzero[CHANNELS];
void *floormemo[CHANNELS];
/* test for too many channels;
(maybe this is can be checked at the stream level?) */
if (vi->channels > CHANNELS) return (-1);
/* time domain information decode (note that applying the
information would have to happen later; we'll probably add a
function entry to the harness for that later */
@ -286,13 +282,14 @@ static int mapping0_inverse(vorbis_block *vb,vorbis_look_mapping *l){
//_analysis_output("residue",seq+j,vb->pcm[j],-8,n/2,0,0);
/* compute and apply spectral envelope */
#if 0
for(i=0;i<vi->channels;i++){
ogg_int32_t *pcm=vb->pcm[i];
int submap=info->chmuxlist[i];
look->floor_func[submap]->
inverse2(vb,look->floor_look[submap],floormemo[i],pcm);
}
#endif
//for(j=0;j<vi->channels;j++)
//_analysis_output("mdct",seq+j,vb->pcm[j],-24,n/2,0,1);
@ -301,8 +298,11 @@ static int mapping0_inverse(vorbis_block *vb,vorbis_look_mapping *l){
for(i=0;i<vi->channels;i++){
ogg_int32_t *pcm=vb->pcm[i];
int submap=info->chmuxlist[i];
if(nonzero[i]) {
if(nonzero[i]) {
look->floor_func[submap]->
inverse2(vb,look->floor_look[submap],floormemo[i],pcm);
mdct_backward(n, pcm, pcm);
/* window the data */
_vorbis_apply_window(pcm,b->window,ci->blocksizes,vb->lW,vb->W,vb->nW);