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Moving q_trans[] table to vp9_quantize.{c, h}.

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Change-Id: I1324c339815a47004ddccdaf651d24c60382b92f
This commit is contained in:
Dmitry Kovalev
2014-04-09 13:35:39 -07:00
parent 7cc78c06e0
commit d1a396d8b9
5 changed files with 35 additions and 33 deletions
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27
vp9/encoder/vp9_quantize.c
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@@ -284,3 +284,30 @@ void vp9_set_quantizer(VP9_COMMON *cm, int q) {
cm->uv_dc_delta_q = 0;
cm->uv_ac_delta_q = 0;
}
// Table that converts 0-63 Q-range values passed in outside to the Qindex
// range used internally.
static const int quantizer_to_qindex[] = {
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 44, 48, 52, 56, 60,
64, 68, 72, 76, 80, 84, 88, 92,
96, 100, 104, 108, 112, 116, 120, 124,
128, 132, 136, 140, 144, 148, 152, 156,
160, 164, 168, 172, 176, 180, 184, 188,
192, 196, 200, 204, 208, 212, 216, 220,
224, 228, 232, 236, 240, 244, 249, 255,
};
int vp9_quantizer_to_qindex(int quantizer) {
return quantizer_to_qindex[quantizer];
}
int vp9_qindex_to_quantizer(int qindex) {
int quantizer;
for (quantizer = 0; quantizer < 64; ++quantizer)
if (quantizer_to_qindex[quantizer] >= qindex)
return quantizer;
return 63;
}