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Original Commit: r66 | ods15 | 2006-09-25 18:42:13 +0300 (Mon, 25 Sep 2006) | 2 lines

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some different values for higher accuracy

Originally committed as revision 6471 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 06:07:59 +00:00
parent 4fa29073eb
commit cbb834afa1
1 changed files with 9 additions and 7 deletions
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16
libavcodec/vorbis_enc.c
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@ -268,7 +268,7 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
venc->channels = avccontext->channels;
venc->sample_rate = avccontext->sample_rate;
venc->blocksize[0] = venc->blocksize[1] = 8;
venc->blocksize[0] = venc->blocksize[1] = 9;
venc->ncodebooks = 10;
venc->codebooks = av_malloc(sizeof(codebook_t) * venc->ncodebooks);
@ -320,7 +320,7 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
// just 1 floor
fc = &venc->floors[0];
fc->partitions = 1;
fc->partitions = 3;
fc->partition_to_class = av_malloc(sizeof(int) * fc->partitions);
for (i = 0; i < fc->partitions; i++) fc->partition_to_class[i] = 0;
fc->nclasses = 1;
@ -328,7 +328,7 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
for (i = 0; i < fc->nclasses; i++) {
floor_class_t * c = &fc->classes[i];
int j, books;
c->dim = 1;
c->dim = 2;
c->subclass = 0;
c->masterbook = 0;
books = (1 << c->subclass);
@ -346,12 +346,14 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
fc->list[0].x = 0;
fc->list[1].x = 1 << fc->rangebits;
for (i = 2; i < fc->values; i++) {
int a = i - 1;
/*int a = i - 1;
int g = ilog(a);
assert(g <= fc->rangebits);
a ^= 1 << (g-1);
g = 1 << (fc->rangebits - g);
fc->list[i].x = g + a*2*g;
fc->list[i].x = g + a*2*g;*/
int a[] = {14, 4, 58, 2, 8, 28, 90};
fc->list[i].x = a[i - 2];
}
ready_floor(fc);
@ -370,7 +372,7 @@ static void create_vorbis_context(venc_context_t * venc, AVCodecContext * avccon
for (i = 0; i < rc->classifications; i++) {
int j;
for (j = 0; j < 8; j++) rc->books[i][j] = 2 + j;
rc->books[i][0] = rc->books[i][1] = rc->books[i][2] = rc->books[i][3] = -1;
//rc->books[i][0] = rc->books[i][1] = rc->books[i][2] = rc->books[i][3] = -1;
}
venc->nmappings = 1;
@ -658,7 +660,7 @@ static void floor_fit(venc_context_t * venc, floor_t * fc, float * coeffs, int *
assert(end <= samples);
for (j = begin; j < end; j++) average += fabs(coeffs[j]);
average /= end - begin;
average /= 64; // MAGIC!
average /= 5000; // MAGIC!
for (j = 0; j < range; j++) if (floor1_inverse_db_table[j * fc->multiplier] > average) break;
posts[fc->list[i].sort] = j;
}