ref: ec670bc5584674ebd37801cf5d1e0ae3540b01b7
parent: fb807776a2bb56630311d72affb9fcb34c42dad0
author: Paul Wilkins <paulwilkins@google.com>
date: Thu Dec 15 13:22:42 EST 2011
QRange experiements. High Q end extended a little. Some clean up. Slightly better on SSIM, Slightly worse on PSNR over derf set. Change-Id: I3dceea8a39e11c26e1a389a40e40b86efc76d28c
--- a/vp8/common/quant_common.c
+++ b/vp8/common/quant_common.c
@@ -39,30 +39,6 @@
#else
/*static int dc_qlookup[QINDEX_RANGE] =
{- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
- 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 38, 40, 42, 44, 47,
- 50, 53, 56, 59, 62, 65, 68, 68, 72, 76, 80, 80, 84, 84, 86, 90,
- 91, 96, 98, 102, 107, 112, 118, 124, 130, 136, 142, 148, 150, 156, 162, 168,
- 174, 180, 182, 188, 196, 200, 204, 208, 212, 216, 220, 224, 228, 232, 236, 240,
- 244, 249, 255, 260, 264, 269, 276, 281, 288, 293, 300, 303, 307, 312, 317, 323,
- 328, 331, 338, 344, 347, 354, 366, 378, 386, 398, 401, 411, 422, 432, 441, 451,
- 464, 483, 496, 507, 520, 529, 540, 551, 570, 585, 604, 624, 645, 667, 692, 718,
-
-};
-static int ac_qlookup[QINDEX_RANGE] =
-{- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
- 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 51,
- 54, 57, 60, 63, 66, 69, 72, 76, 80, 84, 88, 92, 96, 100, 105, 110,
- 115, 120, 125, 130, 135, 140, 146, 152, 158, 164, 170, 176, 182, 188, 194, 200,
- 206, 212, 218, 224, 232, 240, 248, 256, 264, 272, 280, 288, 296, 304, 312, 320,
- 330, 340, 350, 360, 370, 380, 392, 404, 416, 428, 440, 454, 468, 482, 496, 510,
- 524, 540, 556, 572, 588, 604, 622, 640, 658, 676, 696, 716, 736, 756, 776, 796,
- 820, 844, 868, 892, 916, 944, 972, 1000, 1032, 1064, 1096, 1128, 1168, 1208, 1252, 1300
-};*/
-
-static int dc_qlookup[QINDEX_RANGE] =
-{4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 17,
18, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43,
@@ -83,10 +59,10 @@
110, 112, 114, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 146, 149, 152,
155, 158, 161, 164, 167, 170, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209,
213, 217, 221, 225, 229, 234, 239, 245, 249, 254, 259, 264, 269, 274, 279, 284,
-};
+};*/
-//static int dc_qlookup[QINDEX_RANGE];
-//static int ac_qlookup[QINDEX_RANGE];
+static int dc_qlookup[QINDEX_RANGE];
+static int ac_qlookup[QINDEX_RANGE];
#endif
@@ -95,12 +71,12 @@
void vp8_init_quant_tables()
{int i;
- int current_val = 4;
- int last_val = 4;
+ int current_val = 16;
+ int last_val = 16;
int ac_val;
int dc_max;
- for ( i = 0; i < QINDEX_RANGE; i++ )
+ /*for ( i = 0; i < QINDEX_RANGE; i++ )
{ac_qlookup[i] = ac_qlookup[i] << 2;
dc_qlookup[i] = dc_qlookup[i] << 2;
@@ -107,13 +83,13 @@
}
// Not active by default for now.
- return;
+ return;*/
for ( i = 0; i < QINDEX_RANGE; i++ )
{ac_qlookup[i] = current_val;
- current_val = (int)((double)current_val * 1.042);
- //current_val = (int)((double)current_val * 1.01765);
+ //current_val = (int)((double)current_val * 1.045);
+ current_val = (int)((double)current_val * 1.04);
if ( current_val == last_val )
current_val++;
last_val = current_val;
--- a/vp8/encoder/firstpass.c
+++ b/vp8/encoder/firstpass.c
@@ -951,7 +951,7 @@
break;
}
}
-
+#define ERR_DEVISOR 150.0
static int estimate_max_q(VP8_COMP *cpi,
FIRSTPASS_STATS * fpstats,
int section_target_bandwitdh,
@@ -1025,7 +1025,7 @@
// Error per MB based correction factor
err_correction_factor =
- calc_correction_factor(err_per_mb, 150.0, 0.36, 0.90, Q);
+ calc_correction_factor(err_per_mb, ERR_DEVISOR, 0.36, 0.90, Q);
bits_per_mb_at_this_q =
vp8_bits_per_mb(INTER_FRAME, Q) + overhead_bits_per_mb;
@@ -1188,7 +1188,7 @@
// Error per MB based correction factor
err_correction_factor =
- calc_correction_factor(err_per_mb, 150.0, 0.36, 0.90, Q);
+ calc_correction_factor(err_per_mb, ERR_DEVISOR, 0.36, 0.90, Q);
bits_per_mb_at_this_q =
(int)( .5 + ( err_correction_factor *
@@ -1262,7 +1262,7 @@
{// Error per MB based correction factor
err_correction_factor =
- calc_correction_factor(err_per_mb, 150.0, pow_lowq, pow_highq, Q);
+ calc_correction_factor(err_per_mb, ERR_DEVISOR, pow_lowq, pow_highq, Q);
bits_per_mb_at_this_q =
(int)(.5 + ( err_correction_factor *
--- a/vp8/encoder/onyx_if.c
+++ b/vp8/encoder/onyx_if.c
@@ -159,30 +159,6 @@
extern void vp8cx_init_quantizer(VP8_COMP *cpi);
-/*#if CONFIG_EXTEND_QRANGE
-int vp8cx_base_skip_false_prob[QINDEX_RANGE];
-#else
-int vp8cx_base_skip_false_prob[QINDEX_RANGE] =
-{- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255,
- 251, 248, 244, 240, 236, 232, 229, 225,
- 221, 217, 213, 208, 204, 199, 194, 190,
- 187, 183, 179, 175, 172, 168, 164, 160,
- 157, 153, 149, 145, 142, 138, 134, 130,
- 127, 124, 120, 117, 114, 110, 107, 104,
- 101, 98, 95, 92, 89, 86, 83, 80,
- 77, 74, 71, 68, 65, 62, 59, 56,
- 53, 50, 47, 44, 41, 38, 35, 32,
- 30, 28, 26, 24, 22, 20, 18, 16,
-
-};
-#endif*/
int vp8cx_base_skip_false_prob[QINDEX_RANGE];
// Tables relating active max Q to active min Q