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Original Commit: r19 | ods15 | 2006-09-22 12:54:18 +0300 (Fri, 22 Sep 2006) | 2 lines

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floor generation

Originally committed as revision 6430 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 05:55:47 +00:00
parent faf7f0ce7e
commit b9db113d6d
1 changed files with 31 additions and 0 deletions
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31
libavcodec/vorbis_enc.c
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@ -164,6 +164,7 @@ static void ready_codebook(codebook_t * cb) {
static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccontext) {
codebook_t * cb;
floor_t * fc;
int i, book;
venc->channels = avccontext->channels;
@ -215,6 +216,36 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
ready_codebook(cb);
}
venc->nfloors = 1;
venc->floors = av_malloc(sizeof(floor_t) * venc->nfloors);
fc = &venc->floors[0];
fc->partitions = 1;
fc->partition_to_class = av_malloc(sizeof(int) * fc->partitions);
for (i = 0; i < fc->partitions; i++) fc->partition_to_class = 0;
fc->nclasses = 1;
fc->classes = av_malloc(sizeof(floor_class_t) * fc->nclasses);
for (i = 0; i < fc->nclasses; i++) {
floor_class_t * c = &fc->classes[i];
int j, books;
c->dim = 1;
c->subclass = 0;
c->masterbook = 0;
books = (1 << c->subclass);
c->books = av_malloc(sizeof(int) * books);
for (j = 0; j < books; j++) c->books[j] = 0;
}
fc->multiplier = 1;
fc->rangebits = venc->blocksize[0];
fc->values = 2;
for (i = 0; i < fc->partitions; i++)
fc->values += fc->classes[fc->partition_to_class[i]].dim;
fc->list = av_malloc(sizeof(*fc->list) * fc->values);
fc->list[0].x = 0;
fc->list[1].x = 1 << fc->rangebits;
for (i = 2; i < fc->values; i++) fc->list[i].x = i * 5;
}
static inline int ilog(unsigned int a) {