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Original Commit: r71 | ods15 | 2006-09-28 21:00:24 +0300 (Thu, 28 Sep 2006) | 2 lines

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residue type 2

Originally committed as revision 6476 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 06:08:11 +00:00
parent 9d74ff0e55
commit e3df7fc64c
1 changed files with 16 additions and 1 deletions
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17
libavcodec/vorbis_enc.c
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@ -807,6 +807,9 @@ static void residue_encode(venc_context_t * venc, residue_t * rc, PutBitContext
int partitions = (rc->end - rc->begin) / psize;
int classes[channels][partitions];
int classwords = venc->codebooks[rc->classbook].ndimentions;
int real_ch = channels;
if (rc->type == 2) channels = 1;
for (pass = 0; pass < 8; pass++) {
p = 0;
@ -827,14 +830,26 @@ static void residue_encode(venc_context_t * venc, residue_t * rc, PutBitContext
float * buf = coeffs + samples*j + rc->begin + p*psize;
if (nbook == -1) continue;
assert(rc->type == 0);
assert(rc->type == 0 || rc->type == 2);
assert(!(psize % book->ndimentions));
if (rc->type == 0) {
for (k = 0; k < psize; k += book->ndimentions) {
float * a = put_vector(book, pb, &buf[k]);
int l;
for (l = 0; l < book->ndimentions; l++) buf[k + l] -= a[l];
}
} else {
for (k = 0; k < psize; k += book->ndimentions) {
int dim = book->ndimentions, s = rc->begin + p * psize, l;
float vec[dim], * pvec = vec, * a;
for (l = s + k; l < s + k + dim; l++)
*pvec++ = coeffs[(l % real_ch) * samples + l / real_ch];
a = put_vector(book, pb, vec);
for (l = s + k; l < s + k + dim; l++)
coeffs[(l % real_ch) * samples + l / real_ch] -= *a++;
}
}
}
}
}