Code cleanup for dequant_q3

In AV1 TX, the coefficients are always scaled up a factor
of 8 (3 bits), so QTX == Q3. Hence all dequant_q3 related
code is cleaned up.

Change-Id: I606654a98cf25098c9002da0835ac99ab844b85e
diff --git a/av1/common/blockd.h b/av1/common/blockd.h
index 053cacc..4c1b893 100644
--- a/av1/common/blockd.h
+++ b/av1/common/blockd.h
@@ -410,12 +410,6 @@
 
   qm_val_t *seg_iqmatrix[MAX_SEGMENTS][TX_SIZES_ALL];
   qm_val_t *seg_qmatrix[MAX_SEGMENTS][TX_SIZES_ALL];
-
-  // the 'dequantizers' below are not literal dequantizer values.
-  // They're used by encoder RDO to generate ad-hoc lambda values.
-  // They use a hardwired Q3 coeff shift and do not necessarily match
-  // the TX scale in use.
-  const int16_t *dequant_Q3;
 } MACROBLOCKD_PLANE;
 
 #define BLOCK_OFFSET(x, i) \
diff --git a/av1/common/quant_common.c b/av1/common/quant_common.c
index d4bdb98..7537949 100644
--- a/av1/common/quant_common.c
+++ b/av1/common/quant_common.c
@@ -16,7 +16,7 @@
 #include "av1/common/seg_common.h"
 #include "av1/common/blockd.h"
 
-static const int16_t dc_qlookup_Q3[QINDEX_RANGE] = {
+static const int16_t dc_qlookup_QTX[QINDEX_RANGE] = {
   4,    8,    8,    9,    10,  11,  12,  12,  13,  14,  15,   16,   17,   18,
   19,   19,   20,   21,   22,  23,  24,  25,  26,  26,  27,   28,   29,   30,
   31,   32,   32,   33,   34,  35,  36,  37,  38,  38,  39,   40,   41,   42,
@@ -38,7 +38,7 @@
   1184, 1232, 1282, 1336,
 };
 
-static const int16_t dc_qlookup_10_Q3[QINDEX_RANGE] = {
+static const int16_t dc_qlookup_10_QTX[QINDEX_RANGE] = {
   4,    9,    10,   13,   15,   17,   20,   22,   25,   28,   31,   34,   37,
   40,   43,   47,   50,   53,   57,   60,   64,   68,   71,   75,   78,   82,
   86,   90,   93,   97,   101,  105,  109,  113,  116,  120,  124,  128,  132,
@@ -61,7 +61,7 @@
   3953, 4089, 4236, 4394, 4559, 4737, 4929, 5130, 5347,
 };
 
-static const int16_t dc_qlookup_12_Q3[QINDEX_RANGE] = {
+static const int16_t dc_qlookup_12_QTX[QINDEX_RANGE] = {
   4,     12,    18,    25,    33,    41,    50,    60,    70,    80,    91,
   103,   115,   127,   140,   153,   166,   180,   194,   208,   222,   237,
   251,   266,   281,   296,   312,   327,   343,   358,   374,   390,   405,
@@ -88,7 +88,7 @@
   19718, 20521, 21387,
 };
 
-static const int16_t ac_qlookup_Q3[QINDEX_RANGE] = {
+static const int16_t ac_qlookup_QTX[QINDEX_RANGE] = {
   4,    8,    9,    10,   11,   12,   13,   14,   15,   16,   17,   18,   19,
   20,   21,   22,   23,   24,   25,   26,   27,   28,   29,   30,   31,   32,
   33,   34,   35,   36,   37,   38,   39,   40,   41,   42,   43,   44,   45,
@@ -111,7 +111,7 @@
   1567, 1597, 1628, 1660, 1692, 1725, 1759, 1793, 1828,
 };
 
-static const int16_t ac_qlookup_10_Q3[QINDEX_RANGE] = {
+static const int16_t ac_qlookup_10_QTX[QINDEX_RANGE] = {
   4,    9,    11,   13,   16,   18,   21,   24,   27,   30,   33,   37,   40,
   44,   48,   51,   55,   59,   63,   67,   71,   75,   79,   83,   88,   92,
   96,   100,  105,  109,  114,  118,  122,  127,  131,  136,  140,  145,  149,
@@ -134,7 +134,7 @@
   6268, 6388, 6512, 6640, 6768, 6900, 7036, 7172, 7312,
 };
 
-static const int16_t ac_qlookup_12_Q3[QINDEX_RANGE] = {
+static const int16_t ac_qlookup_12_QTX[QINDEX_RANGE] = {
   4,     13,    19,    27,    35,    44,    54,    64,    75,    87,    99,
   112,   126,   139,   154,   168,   183,   199,   214,   230,   247,   263,
   280,   297,   314,   331,   349,   366,   384,   402,   420,   438,   456,
@@ -190,39 +190,28 @@
 // addition, the minimum allowable quantizer is 4; smaller values will
 // underflow to 0 in the actual quantization routines.
 
-int16_t av1_dc_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth) {
-  const int q_clamped = clamp(qindex + delta, 0, MAXQ);
-  switch (bit_depth) {
-    case AOM_BITS_8: return dc_qlookup_Q3[q_clamped];
-    case AOM_BITS_10: return dc_qlookup_10_Q3[q_clamped];
-    case AOM_BITS_12: return dc_qlookup_12_Q3[q_clamped];
-    default:
-      assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
-      return -1;
-  }
-}
-
-int16_t av1_ac_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth) {
-  const int q_clamped = clamp(qindex + delta, 0, MAXQ);
-  switch (bit_depth) {
-    case AOM_BITS_8: return ac_qlookup_Q3[q_clamped];
-    case AOM_BITS_10: return ac_qlookup_10_Q3[q_clamped];
-    case AOM_BITS_12: return ac_qlookup_12_Q3[q_clamped];
-    default:
-      assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
-      return -1;
-  }
-}
-
-// In AV1 TX, the coefficients are always scaled up a factor of 8 (3
-// bits), so QTX == Q3.
-
 int16_t av1_dc_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth) {
-  return av1_dc_quant_Q3(qindex, delta, bit_depth);
+  const int q_clamped = clamp(qindex + delta, 0, MAXQ);
+  switch (bit_depth) {
+    case AOM_BITS_8: return dc_qlookup_QTX[q_clamped];
+    case AOM_BITS_10: return dc_qlookup_10_QTX[q_clamped];
+    case AOM_BITS_12: return dc_qlookup_12_QTX[q_clamped];
+    default:
+      assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
+      return -1;
+  }
 }
 
 int16_t av1_ac_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth) {
-  return av1_ac_quant_Q3(qindex, delta, bit_depth);
+  const int q_clamped = clamp(qindex + delta, 0, MAXQ);
+  switch (bit_depth) {
+    case AOM_BITS_8: return ac_qlookup_QTX[q_clamped];
+    case AOM_BITS_10: return ac_qlookup_10_QTX[q_clamped];
+    case AOM_BITS_12: return ac_qlookup_12_QTX[q_clamped];
+    default:
+      assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
+      return -1;
+  }
 }
 
 int av1_get_qindex(const struct segmentation *seg, int segment_id,
diff --git a/av1/common/quant_common.h b/av1/common/quant_common.h
index 193237d..050dd26 100644
--- a/av1/common/quant_common.h
+++ b/av1/common/quant_common.h
@@ -38,8 +38,6 @@
 
 struct AV1Common;
 
-int16_t av1_dc_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth);
-int16_t av1_ac_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth);
 int16_t av1_dc_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
 int16_t av1_ac_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
 
diff --git a/av1/encoder/aq_complexity.c b/av1/encoder/aq_complexity.c
index 16edbc6..e351451 100644
--- a/av1/encoder/aq_complexity.c
+++ b/av1/encoder/aq_complexity.c
@@ -41,7 +41,7 @@
 
 static int get_aq_c_strength(int q_index, aom_bit_depth_t bit_depth) {
   // Approximate base quatizer (truncated to int)
-  const int base_quant = av1_ac_quant_Q3(q_index, 0, bit_depth) / 4;
+  const int base_quant = av1_ac_quant_QTX(q_index, 0, bit_depth) / 4;
   return (base_quant > 10) + (base_quant > 25);
 }
 
diff --git a/av1/encoder/av1_quantize.c b/av1/encoder/av1_quantize.c
index 66b1b54..6e8973c 100644
--- a/av1/encoder/av1_quantize.c
+++ b/av1/encoder/av1_quantize.c
@@ -531,7 +531,7 @@
 }
 
 static int get_qzbin_factor(int q, aom_bit_depth_t bit_depth) {
-  const int quant = av1_dc_quant_Q3(q, 0, bit_depth);
+  const int quant = av1_dc_quant_QTX(q, 0, bit_depth);
   switch (bit_depth) {
     case AOM_BITS_8: return q == 0 ? 64 : (quant < 148 ? 84 : 80);
     case AOM_BITS_10: return q == 0 ? 64 : (quant < 592 ? 84 : 80);
@@ -546,7 +546,7 @@
                          int u_dc_delta_q, int u_ac_delta_q, int v_dc_delta_q,
                          int v_ac_delta_q, QUANTS *const quants,
                          Dequants *const deq) {
-  int i, q, quant_Q3, quant_QTX;
+  int i, q, quant_QTX;
 
   for (q = 0; q < QINDEX_RANGE; q++) {
     const int qzbin_factor = get_qzbin_factor(q, bit_depth);
@@ -554,9 +554,6 @@
 
     for (i = 0; i < 2; ++i) {
       int qrounding_factor_fp = 64;
-      // y quantizer setup with original coeff shift of Q3
-      quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, y_dc_delta_q, bit_depth)
-                        : av1_ac_quant_Q3(q, 0, bit_depth);
       // y quantizer with TX scale
       quant_QTX = i == 0 ? av1_dc_quant_QTX(q, y_dc_delta_q, bit_depth)
                          : av1_ac_quant_QTX(q, 0, bit_depth);
@@ -567,11 +564,7 @@
       quants->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
       quants->y_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
       deq->y_dequant_QTX[q][i] = quant_QTX;
-      deq->y_dequant_Q3[q][i] = quant_Q3;
 
-      // u quantizer setup with original coeff shift of Q3
-      quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, u_dc_delta_q, bit_depth)
-                        : av1_ac_quant_Q3(q, u_ac_delta_q, bit_depth);
       // u quantizer with TX scale
       quant_QTX = i == 0 ? av1_dc_quant_QTX(q, u_dc_delta_q, bit_depth)
                          : av1_ac_quant_QTX(q, u_ac_delta_q, bit_depth);
@@ -582,11 +575,7 @@
       quants->u_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
       quants->u_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
       deq->u_dequant_QTX[q][i] = quant_QTX;
-      deq->u_dequant_Q3[q][i] = quant_Q3;
 
-      // v quantizer setup with original coeff shift of Q3
-      quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, v_dc_delta_q, bit_depth)
-                        : av1_ac_quant_Q3(q, v_ac_delta_q, bit_depth);
       // v quantizer with TX scale
       quant_QTX = i == 0 ? av1_dc_quant_QTX(q, v_dc_delta_q, bit_depth)
                          : av1_ac_quant_QTX(q, v_ac_delta_q, bit_depth);
@@ -597,7 +586,6 @@
       quants->v_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
       quants->v_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
       deq->v_dequant_QTX[q][i] = quant_QTX;
-      deq->v_dequant_Q3[q][i] = quant_Q3;
     }
 
     for (i = 2; i < 8; i++) {  // 8: SIMD width
@@ -608,7 +596,6 @@
       quants->y_zbin[q][i] = quants->y_zbin[q][1];
       quants->y_round[q][i] = quants->y_round[q][1];
       deq->y_dequant_QTX[q][i] = deq->y_dequant_QTX[q][1];
-      deq->y_dequant_Q3[q][i] = deq->y_dequant_Q3[q][1];
 
       quants->u_quant[q][i] = quants->u_quant[q][1];
       quants->u_quant_fp[q][i] = quants->u_quant_fp[q][1];
@@ -617,7 +604,6 @@
       quants->u_zbin[q][i] = quants->u_zbin[q][1];
       quants->u_round[q][i] = quants->u_round[q][1];
       deq->u_dequant_QTX[q][i] = deq->u_dequant_QTX[q][1];
-      deq->u_dequant_Q3[q][i] = deq->u_dequant_Q3[q][1];
       quants->v_quant[q][i] = quants->u_quant[q][1];
       quants->v_quant_fp[q][i] = quants->v_quant_fp[q][1];
       quants->v_round_fp[q][i] = quants->v_round_fp[q][1];
@@ -625,7 +611,6 @@
       quants->v_zbin[q][i] = quants->v_zbin[q][1];
       quants->v_round[q][i] = quants->v_round[q][1];
       deq->v_dequant_QTX[q][i] = deq->v_dequant_QTX[q][1];
-      deq->v_dequant_Q3[q][i] = deq->v_dequant_Q3[q][1];
     }
   }
 }
@@ -667,7 +652,6 @@
          sizeof(cm->gqmatrix[qmlevel][0]));
   memcpy(&xd->plane[0].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][0],
          sizeof(cm->giqmatrix[qmlevel][0]));
-  xd->plane[0].dequant_Q3 = cpi->dequants.y_dequant_Q3[qindex];
 
   // U
   qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0)
@@ -685,8 +669,6 @@
            sizeof(cm->gqmatrix[qmlevel][1]));
     memcpy(&xd->plane[1].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][1],
            sizeof(cm->giqmatrix[qmlevel][1]));
-    x->plane[1].dequant_QTX = cpi->dequants.u_dequant_QTX[qindex];
-    xd->plane[1].dequant_Q3 = cpi->dequants.u_dequant_Q3[qindex];
   }
   // V
   qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0)
@@ -704,8 +686,6 @@
            sizeof(cm->gqmatrix[qmlevel][2]));
     memcpy(&xd->plane[2].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][2],
            sizeof(cm->giqmatrix[qmlevel][2]));
-    x->plane[2].dequant_QTX = cpi->dequants.v_dequant_QTX[qindex];
-    xd->plane[2].dequant_Q3 = cpi->dequants.v_dequant_Q3[qindex];
   }
   x->skip_block = segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP);
   x->qindex = qindex;
diff --git a/av1/encoder/av1_quantize.h b/av1/encoder/av1_quantize.h
index 6419265..4a1ca7c 100644
--- a/av1/encoder/av1_quantize.h
+++ b/av1/encoder/av1_quantize.h
@@ -79,10 +79,7 @@
   DECLARE_ALIGNED(16, int16_t,
                   u_dequant_QTX[QINDEX_RANGE][8]);  // 8: SIMD width
   DECLARE_ALIGNED(16, int16_t,
-                  v_dequant_QTX[QINDEX_RANGE][8]);              // 8: SIMD width
-  DECLARE_ALIGNED(16, int16_t, y_dequant_Q3[QINDEX_RANGE][8]);  // 8: SIMD width
-  DECLARE_ALIGNED(16, int16_t, u_dequant_Q3[QINDEX_RANGE][8]);  // 8: SIMD width
-  DECLARE_ALIGNED(16, int16_t, v_dequant_Q3[QINDEX_RANGE][8]);  // 8: SIMD width
+                  v_dequant_QTX[QINDEX_RANGE][8]);  // 8: SIMD width
 } Dequants;
 
 struct AV1_COMP;
diff --git a/av1/encoder/nonrd_pickmode.c b/av1/encoder/nonrd_pickmode.c
index c9f985b..5f1edb3 100644
--- a/av1/encoder/nonrd_pickmode.c
+++ b/av1/encoder/nonrd_pickmode.c
@@ -456,9 +456,9 @@
   (void)cpi;
   (void)plane_bsize;
   const MACROBLOCKD *const xd = &x->e_mbd;
-  const struct macroblockd_plane *const pd = &xd->plane[plane];
+  const struct macroblock_plane *const p = &x->plane[plane];
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int qstep = AOMMAX(pd->dequant_Q3[1] >> dequant_shift, 1);
+  const int qstep = AOMMAX(p->dequant_QTX[1] >> dequant_shift, 1);
 
   if (sse == 0) {
     if (rate) *rate = 0;
@@ -591,8 +591,8 @@
   unsigned int sse;
   struct macroblock_plane *const p = &x->plane[0];
   struct macroblockd_plane *const pd = &xd->plane[0];
-  const uint32_t dc_quant = pd->dequant_Q3[0];
-  const uint32_t ac_quant = pd->dequant_Q3[1];
+  const uint32_t dc_quant = p->dequant_QTX[0];
+  const uint32_t ac_quant = p->dequant_QTX[1];
   const int64_t dc_thr = dc_quant * dc_quant >> 6;
   int64_t ac_thr = ac_quant * ac_quant >> 6;
   unsigned int var;
diff --git a/av1/encoder/pickcdef.c b/av1/encoder/pickcdef.c
index c1b1056..4faac5c 100644
--- a/av1/encoder/pickcdef.c
+++ b/av1/encoder/pickcdef.c
@@ -304,7 +304,7 @@
   CdefInfo *const cdef_info = &cm->cdef_info;
   if (pick_method == CDEF_PICK_FROM_Q) {
     const int bd = cm->seq_params.bit_depth;
-    const int q = av1_ac_quant_Q3(cm->base_qindex, 0, bd) >> (bd - 8);
+    const int q = av1_ac_quant_QTX(cm->base_qindex, 0, bd) >> (bd - 8);
     cdef_info->cdef_bits = 0;
     cdef_info->nb_cdef_strengths = 1;
     cdef_info->cdef_pri_damping = 3 + (cm->base_qindex >> 6);
@@ -524,7 +524,7 @@
   int nb_strength_bits = 0;
   uint64_t best_tot_mse = (uint64_t)1 << 63;
   const int quantizer =
-      av1_ac_quant_Q3(cm->base_qindex, 0, cm->seq_params.bit_depth) >>
+      av1_ac_quant_QTX(cm->base_qindex, 0, cm->seq_params.bit_depth) >>
       (cm->seq_params.bit_depth - 8);
   aom_clear_system_state();
   const double lambda = .12 * quantizer * quantizer / 256.;
diff --git a/av1/encoder/picklpf.c b/av1/encoder/picklpf.c
index 101f47a..52acd5c 100644
--- a/av1/encoder/picklpf.c
+++ b/av1/encoder/picklpf.c
@@ -212,7 +212,8 @@
   } else if (method >= LPF_PICK_FROM_Q) {
     const int min_filter_level = 0;
     const int max_filter_level = av1_get_max_filter_level(cpi);
-    const int q = av1_ac_quant_Q3(cm->base_qindex, 0, cm->seq_params.bit_depth);
+    const int q =
+        av1_ac_quant_QTX(cm->base_qindex, 0, cm->seq_params.bit_depth);
     // based on tests result for rtc test set
     // 0.04590 boosted or 0.02295 non-booseted in 18-bit fixed point
     const int strength_boost_q_treshold = 700;
diff --git a/av1/encoder/ratectrl.c b/av1/encoder/ratectrl.c
index 0c29d44..4d93341 100644
--- a/av1/encoder/ratectrl.c
+++ b/av1/encoder/ratectrl.c
@@ -142,9 +142,9 @@
 double av1_convert_qindex_to_q(int qindex, aom_bit_depth_t bit_depth) {
   // Convert the index to a real Q value (scaled down to match old Q values)
   switch (bit_depth) {
-    case AOM_BITS_8: return av1_ac_quant_Q3(qindex, 0, bit_depth) / 4.0;
-    case AOM_BITS_10: return av1_ac_quant_Q3(qindex, 0, bit_depth) / 16.0;
-    case AOM_BITS_12: return av1_ac_quant_Q3(qindex, 0, bit_depth) / 64.0;
+    case AOM_BITS_8: return av1_ac_quant_QTX(qindex, 0, bit_depth) / 4.0;
+    case AOM_BITS_10: return av1_ac_quant_QTX(qindex, 0, bit_depth) / 16.0;
+    case AOM_BITS_12: return av1_ac_quant_QTX(qindex, 0, bit_depth) / 64.0;
     default:
       assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
       return -1.0;
diff --git a/av1/encoder/rd.c b/av1/encoder/rd.c
index e83b4eb..e172507 100644
--- a/av1/encoder/rd.c
+++ b/av1/encoder/rd.c
@@ -348,7 +348,7 @@
                                                               128 };
 
 int av1_compute_rd_mult_based_on_qindex(const AV1_COMP *cpi, int qindex) {
-  const int q = av1_dc_quant_Q3(qindex, 0, cpi->common.seq_params.bit_depth);
+  const int q = av1_dc_quant_QTX(qindex, 0, cpi->common.seq_params.bit_depth);
   int rdmult = q * q;
   rdmult = rdmult * 3 + (rdmult * 2 / 3);
   switch (cpi->common.seq_params.bit_depth) {
@@ -378,18 +378,18 @@
 
 int av1_get_deltaq_offset(const AV1_COMP *cpi, int qindex, double beta) {
   assert(beta > 0.0);
-  int q = av1_dc_quant_Q3(qindex, 0, cpi->common.seq_params.bit_depth);
+  int q = av1_dc_quant_QTX(qindex, 0, cpi->common.seq_params.bit_depth);
   int newq = (int)rint(q / sqrt(beta));
   int orig_qindex = qindex;
   if (newq < q) {
     do {
       qindex--;
-      q = av1_dc_quant_Q3(qindex, 0, cpi->common.seq_params.bit_depth);
+      q = av1_dc_quant_QTX(qindex, 0, cpi->common.seq_params.bit_depth);
     } while (newq < q && qindex > 0);
   } else {
     do {
       qindex++;
-      q = av1_dc_quant_Q3(qindex, 0, cpi->common.seq_params.bit_depth);
+      q = av1_dc_quant_QTX(qindex, 0, cpi->common.seq_params.bit_depth);
     } while (newq > q && qindex < MAXQ);
   }
   return qindex - orig_qindex;
@@ -399,7 +399,7 @@
   assert(beta > 0.0);
   const AV1_COMMON *cm = &cpi->common;
   int64_t q =
-      av1_dc_quant_Q3(cm->base_qindex, 0, cpi->common.seq_params.bit_depth);
+      av1_dc_quant_QTX(cm->base_qindex, 0, cpi->common.seq_params.bit_depth);
   int64_t rdmult = 0;
 
   switch (cpi->common.seq_params.bit_depth) {
@@ -429,9 +429,13 @@
 static int compute_rd_thresh_factor(int qindex, aom_bit_depth_t bit_depth) {
   double q;
   switch (bit_depth) {
-    case AOM_BITS_8: q = av1_dc_quant_Q3(qindex, 0, AOM_BITS_8) / 4.0; break;
-    case AOM_BITS_10: q = av1_dc_quant_Q3(qindex, 0, AOM_BITS_10) / 16.0; break;
-    case AOM_BITS_12: q = av1_dc_quant_Q3(qindex, 0, AOM_BITS_12) / 64.0; break;
+    case AOM_BITS_8: q = av1_dc_quant_QTX(qindex, 0, AOM_BITS_8) / 4.0; break;
+    case AOM_BITS_10:
+      q = av1_dc_quant_QTX(qindex, 0, AOM_BITS_10) / 16.0;
+      break;
+    case AOM_BITS_12:
+      q = av1_dc_quant_QTX(qindex, 0, AOM_BITS_12) / 64.0;
+      break;
     default:
       assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
       return -1;
@@ -1340,7 +1344,7 @@
 
 int av1_get_intra_cost_penalty(int qindex, int qdelta,
                                aom_bit_depth_t bit_depth) {
-  const int q = av1_dc_quant_Q3(qindex, qdelta, bit_depth);
+  const int q = av1_dc_quant_QTX(qindex, qdelta, bit_depth);
   switch (bit_depth) {
     case AOM_BITS_8: return 20 * q;
     case AOM_BITS_10: return 5 * q;
diff --git a/av1/encoder/rdopt.c b/av1/encoder/rdopt.c
index f965d0c..df909e3 100644
--- a/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@ -1737,13 +1737,13 @@
                               int *rate, int64_t *dist) {
   (void)num_samples;
   const MACROBLOCKD *const xd = &x->e_mbd;
-  const struct macroblockd_plane *const pd = &xd->plane[plane];
+  const struct macroblock_plane *const p = &x->plane[plane];
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
 
   // Fast approximate the modelling function.
   if (cpi->sf.simple_model_rd_from_var) {
     const int64_t square_error = sse;
-    int quantizer = pd->dequant_Q3[1] >> dequant_shift;
+    int quantizer = p->dequant_QTX[1] >> dequant_shift;
     if (quantizer < 120)
       *rate = (int)AOMMIN(
           (square_error * (280 - quantizer)) >> (16 - AV1_PROB_COST_SHIFT),
@@ -1754,7 +1754,7 @@
     *dist = (square_error * quantizer) >> 8;
   } else {
     av1_model_rd_from_var_lapndz(sse, num_pels_log2_lookup[plane_bsize],
-                                 pd->dequant_Q3[1] >> dequant_shift, rate,
+                                 p->dequant_QTX[1] >> dequant_shift, rate,
                                  dist);
   }
   *dist <<= 4;
@@ -2392,7 +2392,7 @@
   const int txw = tx_size_wide[tx_size];
   const int txh = tx_size_high[tx_size];
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int q_step = pd->dequant_Q3[1] >> dequant_shift;
+  const int q_step = p->dequant_QTX[1] >> dequant_shift;
   const int num_samples = txw * txh;
 
   const double rate_norm = (double)rd_stats->rate / num_samples;
@@ -2499,7 +2499,7 @@
                      &bh);
   const int num_samples = bw * bh;
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int q_step = pd->dequant_Q3[1] >> dequant_shift;
+  const int q_step = p->dequant_QTX[1] >> dequant_shift;
 
   const double rate_norm = (double)rd_stats->rate / num_samples;
   const double dist_norm = (double)rd_stats->dist / num_samples;
@@ -2608,12 +2608,12 @@
                               int *rate, int64_t *dist) {
   const MACROBLOCKD *const xd = &x->e_mbd;
   const struct macroblockd_plane *const pd = &xd->plane[plane];
+  const struct macroblock_plane *const p = &x->plane[plane];
   const int log_numpels = num_pels_log2_lookup[plane_bsize];
 
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int q_step = AOMMAX(pd->dequant_Q3[1] >> dequant_shift, 1);
+  const int q_step = AOMMAX(p->dequant_QTX[1] >> dequant_shift, 1);
 
-  const struct macroblock_plane *const p = &x->plane[plane];
   int bw, bh;
   get_txb_dimensions(xd, plane, plane_bsize, 0, 0, plane_bsize, NULL, NULL, &bw,
                      &bh);
@@ -2769,9 +2769,9 @@
   (void)cpi;
   (void)plane_bsize;
   const MACROBLOCKD *const xd = &x->e_mbd;
-  const struct macroblockd_plane *const pd = &xd->plane[plane];
+  const struct macroblock_plane *const p = &x->plane[plane];
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int qstep = AOMMAX(pd->dequant_Q3[1] >> dequant_shift, 1);
+  const int qstep = AOMMAX(p->dequant_QTX[1] >> dequant_shift, 1);
   if (sse == 0) {
     if (rate) *rate = 0;
     if (dist) *dist = 0;
@@ -2874,9 +2874,9 @@
   (void)cpi;
   (void)plane_bsize;
   const MACROBLOCKD *const xd = &x->e_mbd;
-  const struct macroblockd_plane *const pd = &xd->plane[plane];
+  const struct macroblock_plane *const p = &x->plane[plane];
   const int dequant_shift = (is_cur_buf_hbd(xd)) ? xd->bd - 5 : 3;
-  const int qstep = AOMMAX(pd->dequant_Q3[1] >> dequant_shift, 1);
+  const int qstep = AOMMAX(p->dequant_QTX[1] >> dequant_shift, 1);
 
   if (sse == 0) {
     if (rate) *rate = 0;
diff --git a/av1/encoder/tpl_model.c b/av1/encoder/tpl_model.c
index 2417ec8..4bb5004 100644
--- a/av1/encoder/tpl_model.c
+++ b/av1/encoder/tpl_model.c
@@ -130,7 +130,7 @@
 
   const int q_cur = gf_group->q_val[frame_idx];
   const int16_t qstep_cur =
-      ROUND_POWER_OF_TWO(av1_ac_quant_Q3(q_cur, 0, xd->bd), xd->bd - 8);
+      ROUND_POWER_OF_TWO(av1_ac_quant_QTX(q_cur, 0, xd->bd), xd->bd - 8);
   const int qstep_cur_noise =
       use_satd ? ((int)qstep_cur * pix_num + 16) / (4 * 8)
                : ((int)qstep_cur * (int)qstep_cur * pix_num + 384) / (12 * 64);
@@ -196,7 +196,7 @@
     int q_ref = gf_group->q_val[gf_group->ref_frame_gop_idx[frame_idx][rf_idx]];
 
     const int16_t qstep_ref =
-        ROUND_POWER_OF_TWO(av1_ac_quant_Q3(q_ref, 0, xd->bd), xd->bd - 8);
+        ROUND_POWER_OF_TWO(av1_ac_quant_QTX(q_ref, 0, xd->bd), xd->bd - 8);
     const int qstep_ref_noise =
         use_satd
             ? ((int)qstep_ref * pix_num + 16) / (4 * 8)