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Original Commit: r74 | ods15 | 2006-09-29 13:03:31 +0300 (Fri, 29 Sep 2006) | 2 lines 

support multiple codebooks for floor

Originally committed as revision 6479 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 06:08:19 +00:00
parent 899124aa38
commit a277ad842e
1 changed files with 21 additions and 3 deletions
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24
libavcodec/vorbis_enc.c
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@ -753,11 +753,29 @@ static void floor_encode(venc_context_t * venc, floor_t * fc, PutBitContext * pb
counter = 2;
for (i = 0; i < fc->partitions; i++) {
floor_class_t * c = &fc->classes[fc->partition_to_class[i]];
codebook_t * book = &venc->codebooks[c->books[0]];
int k;
assert(!c->subclass);
int k, cval = 0, csub = 1<<c->subclass;
if (c->subclass) {
codebook_t * book = &venc->codebooks[c->masterbook];
int cshift = 0;
for (k = 0; k < c->dim; k++) {
int l;
for (l = 0; l < csub; l++) {
int maxval = 1;
if (c->books[l] != -1) maxval = venc->codebooks[c->books[l]].nentries;
// coded could be -1, but this still works, cause thats 0
if (coded[counter + k] < maxval) break;
}
assert(l != csub);
cval |= l << cshift;
cshift += c->subclass;
}
assert(cval < book->nentries);
put_bits(pb, book->entries[cval].len, book->entries[cval].codeword);
}
for (k = 0; k < c->dim; k++) {
codebook_t * book = &venc->codebooks[c->books[cval & (csub-1)]];
int entry = coded[counter++];
cval >>= c->subclass;
if (entry == -1) entry = 0;
assert(entry < book->nentries);
assert(entry >= 0);