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Adding vp9_get_qindex function.

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Moving common code from encoder and decoder to vp9_get_qindex function.
Also moving quant-related constants from vp9_onyxc_int.h to
vp9_quant_common.h.

Change-Id: I70c5bfbaa1c8bf00fde0bfc459d077f88b6d46c8
This commit is contained in:
Dmitry Kovalev
2013-04-30 13:39:50 -07:00
parent 347ad7fff0
commit 3f6c6ffc86
5 changed files with 24 additions and 39 deletions
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14
vp9/common/vp9_quant_common.c
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@@ -10,6 +10,7 @@
#include "vp9/common/vp9_common.h"
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_seg_common.h"
static int16_t dc_qlookup[QINDEX_RANGE];
static int16_t ac_qlookup[QINDEX_RANGE];
@@ -44,3 +45,16 @@ int16_t vp9_dc_quant(int qindex, int delta) {
int16_t vp9_ac_quant(int qindex, int delta) {
return ac_qlookup[clamp(qindex + delta, 0, MAXQ)];
}
int vp9_get_qindex(MACROBLOCKD *xd, int segment_id, int base_qindex) {
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_ALT_Q)) {
const int data = vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q);
return xd->mb_segment_abs_delta == SEGMENT_ABSDATA ?
data : // Abs value
clamp(base_qindex + data, 0, MAXQ); // Delta value
} else {
return base_qindex;
}
}