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Remove unused vp9_init_quant_tables function

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This function is not effectively used, hence removed.

Change-Id: I2e8e48fa07c7518931690f3b04bae920cb360e49
This commit is contained in:
Jingning Han 2014-06-18 11:51:41 -07:00
parent 7c45dc98a8
commit 3b9c19aaa7
4 changed files with 0 additions and 44 deletions
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39
vp9/common/vp9_quant_common.c
View File

@ -12,7 +12,6 @@
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_seg_common.h"
#if 1
static const int16_t dc_qlookup[QINDEX_RANGE] = {
4, 8, 8, 9, 10, 11, 12, 12,
13, 14, 15, 16, 17, 18, 19, 19,
@ -83,44 +82,6 @@ static const int16_t ac_qlookup[QINDEX_RANGE] = {
1597, 1628, 1660, 1692, 1725, 1759, 1793, 1828,
};
void vp9_init_quant_tables(void) { }
#else
static int16_t dc_qlookup[QINDEX_RANGE];
static int16_t ac_qlookup[QINDEX_RANGE];
#define ACDC_MIN 8
// TODO(dkovalev) move to common and reuse
static double poly3(double a, double b, double c, double d, double x) {
return a*x*x*x + b*x*x + c*x + d;
}
void vp9_init_quant_tables() {
int i, val = 4;
// A "real" q of 1.0 forces lossless mode.
// In practice non lossless Q's between 1.0 and 2.0 (represented here by
// integer values from 5-7 give poor rd results (lower psnr and often
// larger size than the lossless encode. To block out those "not very useful"
// values we increment the ac and dc q lookup values by 4 after position 0.
ac_qlookup[0] = val;
dc_qlookup[0] = val;
val += 4;
for (i = 1; i < QINDEX_RANGE; i++) {
const int ac_val = val;
val = (int)(val * 1.01975);
if (val == ac_val)
++val;
ac_qlookup[i] = (int16_t)ac_val;
dc_qlookup[i] = (int16_t)MAX(ACDC_MIN, poly3(0.000000305, -0.00065, 0.9,
0.5, ac_val));
}
}
#endif
int16_t vp9_dc_quant(int qindex, int delta) {
return dc_qlookup[clamp(qindex + delta, 0, MAXQ)];
}

2
vp9/common/vp9_quant_common.h
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@ -22,8 +22,6 @@ extern "C" {
#define QINDEX_RANGE (MAXQ - MINQ + 1)
#define QINDEX_BITS 8
void vp9_init_quant_tables();
int16_t vp9_dc_quant(int qindex, int delta);
int16_t vp9_ac_quant(int qindex, int delta);

1
vp9/decoder/vp9_decoder.c
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@ -37,7 +37,6 @@ static void initialize_dec() {
if (!init_done) {
vp9_init_neighbors();
vp9_init_quant_tables();
init_done = 1;
}
}

2
vp9/encoder/vp9_encoder.c
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@ -142,8 +142,6 @@ void vp9_initialize_enc() {
if (!init_done) {
vp9_init_neighbors();
vp9_init_quant_tables();
vp9_coef_tree_initialize();
vp9_tokenize_initialize();
vp9_init_me_luts();