Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 2228 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/dct.c b/third_party/aom/av1/encoder/dct.c
new file mode 100644
index 000000000..09e1b0563
--- /dev/null
+++ b/third_party/aom/av1/encoder/dct.c
@@ -0,0 +1,2228 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <assert.h>
+#include <math.h>
+
+#include "./aom_config.h"
+#include "./aom_dsp_rtcd.h"
+#include "./av1_rtcd.h"
+#include "aom_dsp/fwd_txfm.h"
+#include "aom_ports/mem.h"
+#include "av1/common/blockd.h"
+#include "av1/common/av1_fwd_txfm1d.h"
+#include "av1/common/av1_fwd_txfm2d_cfg.h"
+#include "av1/common/idct.h"
+
+static INLINE void range_check(const tran_low_t *input, const int size,
+                               const int bit) {
+#if 0  // CONFIG_COEFFICIENT_RANGE_CHECKING
+// TODO(angiebird): the range_check is not used because the bit range
+// in fdct# is not correct. Since we are going to merge in a new version
+// of fdct# from nextgenv2, we won't fix the incorrect bit range now.
+  int i;
+  for (i = 0; i < size; ++i) {
+    assert(abs(input[i]) < (1 << bit));
+  }
+#else
+  (void)input;
+  (void)size;
+  (void)bit;
+#endif
+}
+
+static void fdct4(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t temp;
+  tran_low_t step[4];
+
+  // stage 0
+  range_check(input, 4, 14);
+
+  // stage 1
+  output[0] = input[0] + input[3];
+  output[1] = input[1] + input[2];
+  output[2] = input[1] - input[2];
+  output[3] = input[0] - input[3];
+
+  range_check(output, 4, 15);
+
+  // stage 2
+  temp = output[0] * cospi_16_64 + output[1] * cospi_16_64;
+  step[0] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64;
+  step[1] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[2] * cospi_24_64 + output[3] * cospi_8_64;
+  step[2] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64;
+  step[3] = (tran_low_t)fdct_round_shift(temp);
+
+  range_check(step, 4, 16);
+
+  // stage 3
+  output[0] = step[0];
+  output[1] = step[2];
+  output[2] = step[1];
+  output[3] = step[3];
+
+  range_check(output, 4, 16);
+}
+
+static void fdct8(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t temp;
+  tran_low_t step[8];
+
+  // stage 0
+  range_check(input, 8, 13);
+
+  // stage 1
+  output[0] = input[0] + input[7];
+  output[1] = input[1] + input[6];
+  output[2] = input[2] + input[5];
+  output[3] = input[3] + input[4];
+  output[4] = input[3] - input[4];
+  output[5] = input[2] - input[5];
+  output[6] = input[1] - input[6];
+  output[7] = input[0] - input[7];
+
+  range_check(output, 8, 14);
+
+  // stage 2
+  step[0] = output[0] + output[3];
+  step[1] = output[1] + output[2];
+  step[2] = output[1] - output[2];
+  step[3] = output[0] - output[3];
+  step[4] = output[4];
+  temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64;
+  step[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[6] * cospi_16_64 + output[5] * cospi_16_64;
+  step[6] = (tran_low_t)fdct_round_shift(temp);
+  step[7] = output[7];
+
+  range_check(step, 8, 15);
+
+  // stage 3
+  temp = step[0] * cospi_16_64 + step[1] * cospi_16_64;
+  output[0] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64;
+  output[1] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[2] * cospi_24_64 + step[3] * cospi_8_64;
+  output[2] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64;
+  output[3] = (tran_low_t)fdct_round_shift(temp);
+  output[4] = step[4] + step[5];
+  output[5] = step[4] - step[5];
+  output[6] = step[7] - step[6];
+  output[7] = step[7] + step[6];
+
+  range_check(output, 8, 16);
+
+  // stage 4
+  step[0] = output[0];
+  step[1] = output[1];
+  step[2] = output[2];
+  step[3] = output[3];
+  temp = output[4] * cospi_28_64 + output[7] * cospi_4_64;
+  step[4] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[5] * cospi_12_64 + output[6] * cospi_20_64;
+  step[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64;
+  step[6] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64;
+  step[7] = (tran_low_t)fdct_round_shift(temp);
+
+  range_check(step, 8, 16);
+
+  // stage 5
+  output[0] = step[0];
+  output[1] = step[4];
+  output[2] = step[2];
+  output[3] = step[6];
+  output[4] = step[1];
+  output[5] = step[5];
+  output[6] = step[3];
+  output[7] = step[7];
+
+  range_check(output, 8, 16);
+}
+
+static void fdct16(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t temp;
+  tran_low_t step[16];
+
+  // stage 0
+  range_check(input, 16, 13);
+
+  // stage 1
+  output[0] = input[0] + input[15];
+  output[1] = input[1] + input[14];
+  output[2] = input[2] + input[13];
+  output[3] = input[3] + input[12];
+  output[4] = input[4] + input[11];
+  output[5] = input[5] + input[10];
+  output[6] = input[6] + input[9];
+  output[7] = input[7] + input[8];
+  output[8] = input[7] - input[8];
+  output[9] = input[6] - input[9];
+  output[10] = input[5] - input[10];
+  output[11] = input[4] - input[11];
+  output[12] = input[3] - input[12];
+  output[13] = input[2] - input[13];
+  output[14] = input[1] - input[14];
+  output[15] = input[0] - input[15];
+
+  range_check(output, 16, 14);
+
+  // stage 2
+  step[0] = output[0] + output[7];
+  step[1] = output[1] + output[6];
+  step[2] = output[2] + output[5];
+  step[3] = output[3] + output[4];
+  step[4] = output[3] - output[4];
+  step[5] = output[2] - output[5];
+  step[6] = output[1] - output[6];
+  step[7] = output[0] - output[7];
+  step[8] = output[8];
+  step[9] = output[9];
+  temp = output[10] * -cospi_16_64 + output[13] * cospi_16_64;
+  step[10] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[11] * -cospi_16_64 + output[12] * cospi_16_64;
+  step[11] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[12] * cospi_16_64 + output[11] * cospi_16_64;
+  step[12] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[13] * cospi_16_64 + output[10] * cospi_16_64;
+  step[13] = (tran_low_t)fdct_round_shift(temp);
+  step[14] = output[14];
+  step[15] = output[15];
+
+  range_check(step, 16, 15);
+
+  // stage 3
+  output[0] = step[0] + step[3];
+  output[1] = step[1] + step[2];
+  output[2] = step[1] - step[2];
+  output[3] = step[0] - step[3];
+  output[4] = step[4];
+  temp = step[5] * -cospi_16_64 + step[6] * cospi_16_64;
+  output[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[6] * cospi_16_64 + step[5] * cospi_16_64;
+  output[6] = (tran_low_t)fdct_round_shift(temp);
+  output[7] = step[7];
+  output[8] = step[8] + step[11];
+  output[9] = step[9] + step[10];
+  output[10] = step[9] - step[10];
+  output[11] = step[8] - step[11];
+  output[12] = step[15] - step[12];
+  output[13] = step[14] - step[13];
+  output[14] = step[14] + step[13];
+  output[15] = step[15] + step[12];
+
+  range_check(output, 16, 16);
+
+  // stage 4
+  temp = output[0] * cospi_16_64 + output[1] * cospi_16_64;
+  step[0] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64;
+  step[1] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[2] * cospi_24_64 + output[3] * cospi_8_64;
+  step[2] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64;
+  step[3] = (tran_low_t)fdct_round_shift(temp);
+  step[4] = output[4] + output[5];
+  step[5] = output[4] - output[5];
+  step[6] = output[7] - output[6];
+  step[7] = output[7] + output[6];
+  step[8] = output[8];
+  temp = output[9] * -cospi_8_64 + output[14] * cospi_24_64;
+  step[9] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[10] * -cospi_24_64 + output[13] * -cospi_8_64;
+  step[10] = (tran_low_t)fdct_round_shift(temp);
+  step[11] = output[11];
+  step[12] = output[12];
+  temp = output[13] * cospi_24_64 + output[10] * -cospi_8_64;
+  step[13] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[14] * cospi_8_64 + output[9] * cospi_24_64;
+  step[14] = (tran_low_t)fdct_round_shift(temp);
+  step[15] = output[15];
+
+  range_check(step, 16, 16);
+
+  // stage 5
+  output[0] = step[0];
+  output[1] = step[1];
+  output[2] = step[2];
+  output[3] = step[3];
+  temp = step[4] * cospi_28_64 + step[7] * cospi_4_64;
+  output[4] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[5] * cospi_12_64 + step[6] * cospi_20_64;
+  output[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[6] * cospi_12_64 + step[5] * -cospi_20_64;
+  output[6] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[7] * cospi_28_64 + step[4] * -cospi_4_64;
+  output[7] = (tran_low_t)fdct_round_shift(temp);
+  output[8] = step[8] + step[9];
+  output[9] = step[8] - step[9];
+  output[10] = step[11] - step[10];
+  output[11] = step[11] + step[10];
+  output[12] = step[12] + step[13];
+  output[13] = step[12] - step[13];
+  output[14] = step[15] - step[14];
+  output[15] = step[15] + step[14];
+
+  range_check(output, 16, 16);
+
+  // stage 6
+  step[0] = output[0];
+  step[1] = output[1];
+  step[2] = output[2];
+  step[3] = output[3];
+  step[4] = output[4];
+  step[5] = output[5];
+  step[6] = output[6];
+  step[7] = output[7];
+  temp = output[8] * cospi_30_64 + output[15] * cospi_2_64;
+  step[8] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[9] * cospi_14_64 + output[14] * cospi_18_64;
+  step[9] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[10] * cospi_22_64 + output[13] * cospi_10_64;
+  step[10] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[11] * cospi_6_64 + output[12] * cospi_26_64;
+  step[11] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[12] * cospi_6_64 + output[11] * -cospi_26_64;
+  step[12] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[13] * cospi_22_64 + output[10] * -cospi_10_64;
+  step[13] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[14] * cospi_14_64 + output[9] * -cospi_18_64;
+  step[14] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[15] * cospi_30_64 + output[8] * -cospi_2_64;
+  step[15] = (tran_low_t)fdct_round_shift(temp);
+
+  range_check(step, 16, 16);
+
+  // stage 7
+  output[0] = step[0];
+  output[1] = step[8];
+  output[2] = step[4];
+  output[3] = step[12];
+  output[4] = step[2];
+  output[5] = step[10];
+  output[6] = step[6];
+  output[7] = step[14];
+  output[8] = step[1];
+  output[9] = step[9];
+  output[10] = step[5];
+  output[11] = step[13];
+  output[12] = step[3];
+  output[13] = step[11];
+  output[14] = step[7];
+  output[15] = step[15];
+
+  range_check(output, 16, 16);
+}
+
+static void fdct32(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t temp;
+  tran_low_t step[32];
+
+  // stage 0
+  range_check(input, 32, 14);
+
+  // stage 1
+  output[0] = input[0] + input[31];
+  output[1] = input[1] + input[30];
+  output[2] = input[2] + input[29];
+  output[3] = input[3] + input[28];
+  output[4] = input[4] + input[27];
+  output[5] = input[5] + input[26];
+  output[6] = input[6] + input[25];
+  output[7] = input[7] + input[24];
+  output[8] = input[8] + input[23];
+  output[9] = input[9] + input[22];
+  output[10] = input[10] + input[21];
+  output[11] = input[11] + input[20];
+  output[12] = input[12] + input[19];
+  output[13] = input[13] + input[18];
+  output[14] = input[14] + input[17];
+  output[15] = input[15] + input[16];
+  output[16] = input[15] - input[16];
+  output[17] = input[14] - input[17];
+  output[18] = input[13] - input[18];
+  output[19] = input[12] - input[19];
+  output[20] = input[11] - input[20];
+  output[21] = input[10] - input[21];
+  output[22] = input[9] - input[22];
+  output[23] = input[8] - input[23];
+  output[24] = input[7] - input[24];
+  output[25] = input[6] - input[25];
+  output[26] = input[5] - input[26];
+  output[27] = input[4] - input[27];
+  output[28] = input[3] - input[28];
+  output[29] = input[2] - input[29];
+  output[30] = input[1] - input[30];
+  output[31] = input[0] - input[31];
+
+  range_check(output, 32, 15);
+
+  // stage 2
+  step[0] = output[0] + output[15];
+  step[1] = output[1] + output[14];
+  step[2] = output[2] + output[13];
+  step[3] = output[3] + output[12];
+  step[4] = output[4] + output[11];
+  step[5] = output[5] + output[10];
+  step[6] = output[6] + output[9];
+  step[7] = output[7] + output[8];
+  step[8] = output[7] - output[8];
+  step[9] = output[6] - output[9];
+  step[10] = output[5] - output[10];
+  step[11] = output[4] - output[11];
+  step[12] = output[3] - output[12];
+  step[13] = output[2] - output[13];
+  step[14] = output[1] - output[14];
+  step[15] = output[0] - output[15];
+  step[16] = output[16];
+  step[17] = output[17];
+  step[18] = output[18];
+  step[19] = output[19];
+  temp = output[20] * -cospi_16_64 + output[27] * cospi_16_64;
+  step[20] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[21] * -cospi_16_64 + output[26] * cospi_16_64;
+  step[21] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[22] * -cospi_16_64 + output[25] * cospi_16_64;
+  step[22] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[23] * -cospi_16_64 + output[24] * cospi_16_64;
+  step[23] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[24] * cospi_16_64 + output[23] * cospi_16_64;
+  step[24] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[25] * cospi_16_64 + output[22] * cospi_16_64;
+  step[25] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[26] * cospi_16_64 + output[21] * cospi_16_64;
+  step[26] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[27] * cospi_16_64 + output[20] * cospi_16_64;
+  step[27] = (tran_low_t)fdct_round_shift(temp);
+  step[28] = output[28];
+  step[29] = output[29];
+  step[30] = output[30];
+  step[31] = output[31];
+
+  range_check(step, 32, 16);
+
+  // stage 3
+  output[0] = step[0] + step[7];
+  output[1] = step[1] + step[6];
+  output[2] = step[2] + step[5];
+  output[3] = step[3] + step[4];
+  output[4] = step[3] - step[4];
+  output[5] = step[2] - step[5];
+  output[6] = step[1] - step[6];
+  output[7] = step[0] - step[7];
+  output[8] = step[8];
+  output[9] = step[9];
+  temp = step[10] * -cospi_16_64 + step[13] * cospi_16_64;
+  output[10] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[11] * -cospi_16_64 + step[12] * cospi_16_64;
+  output[11] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[12] * cospi_16_64 + step[11] * cospi_16_64;
+  output[12] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[13] * cospi_16_64 + step[10] * cospi_16_64;
+  output[13] = (tran_low_t)fdct_round_shift(temp);
+  output[14] = step[14];
+  output[15] = step[15];
+  output[16] = step[16] + step[23];
+  output[17] = step[17] + step[22];
+  output[18] = step[18] + step[21];
+  output[19] = step[19] + step[20];
+  output[20] = step[19] - step[20];
+  output[21] = step[18] - step[21];
+  output[22] = step[17] - step[22];
+  output[23] = step[16] - step[23];
+  output[24] = step[31] - step[24];
+  output[25] = step[30] - step[25];
+  output[26] = step[29] - step[26];
+  output[27] = step[28] - step[27];
+  output[28] = step[28] + step[27];
+  output[29] = step[29] + step[26];
+  output[30] = step[30] + step[25];
+  output[31] = step[31] + step[24];
+
+  range_check(output, 32, 17);
+
+  // stage 4
+  step[0] = output[0] + output[3];
+  step[1] = output[1] + output[2];
+  step[2] = output[1] - output[2];
+  step[3] = output[0] - output[3];
+  step[4] = output[4];
+  temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64;
+  step[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[6] * cospi_16_64 + output[5] * cospi_16_64;
+  step[6] = (tran_low_t)fdct_round_shift(temp);
+  step[7] = output[7];
+  step[8] = output[8] + output[11];
+  step[9] = output[9] + output[10];
+  step[10] = output[9] - output[10];
+  step[11] = output[8] - output[11];
+  step[12] = output[15] - output[12];
+  step[13] = output[14] - output[13];
+  step[14] = output[14] + output[13];
+  step[15] = output[15] + output[12];
+  step[16] = output[16];
+  step[17] = output[17];
+  temp = output[18] * -cospi_8_64 + output[29] * cospi_24_64;
+  step[18] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[19] * -cospi_8_64 + output[28] * cospi_24_64;
+  step[19] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[20] * -cospi_24_64 + output[27] * -cospi_8_64;
+  step[20] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[21] * -cospi_24_64 + output[26] * -cospi_8_64;
+  step[21] = (tran_low_t)fdct_round_shift(temp);
+  step[22] = output[22];
+  step[23] = output[23];
+  step[24] = output[24];
+  step[25] = output[25];
+  temp = output[26] * cospi_24_64 + output[21] * -cospi_8_64;
+  step[26] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[27] * cospi_24_64 + output[20] * -cospi_8_64;
+  step[27] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[28] * cospi_8_64 + output[19] * cospi_24_64;
+  step[28] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[29] * cospi_8_64 + output[18] * cospi_24_64;
+  step[29] = (tran_low_t)fdct_round_shift(temp);
+  step[30] = output[30];
+  step[31] = output[31];
+
+  range_check(step, 32, 18);
+
+  // stage 5
+  temp = step[0] * cospi_16_64 + step[1] * cospi_16_64;
+  output[0] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64;
+  output[1] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[2] * cospi_24_64 + step[3] * cospi_8_64;
+  output[2] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64;
+  output[3] = (tran_low_t)fdct_round_shift(temp);
+  output[4] = step[4] + step[5];
+  output[5] = step[4] - step[5];
+  output[6] = step[7] - step[6];
+  output[7] = step[7] + step[6];
+  output[8] = step[8];
+  temp = step[9] * -cospi_8_64 + step[14] * cospi_24_64;
+  output[9] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[10] * -cospi_24_64 + step[13] * -cospi_8_64;
+  output[10] = (tran_low_t)fdct_round_shift(temp);
+  output[11] = step[11];
+  output[12] = step[12];
+  temp = step[13] * cospi_24_64 + step[10] * -cospi_8_64;
+  output[13] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[14] * cospi_8_64 + step[9] * cospi_24_64;
+  output[14] = (tran_low_t)fdct_round_shift(temp);
+  output[15] = step[15];
+  output[16] = step[16] + step[19];
+  output[17] = step[17] + step[18];
+  output[18] = step[17] - step[18];
+  output[19] = step[16] - step[19];
+  output[20] = step[23] - step[20];
+  output[21] = step[22] - step[21];
+  output[22] = step[22] + step[21];
+  output[23] = step[23] + step[20];
+  output[24] = step[24] + step[27];
+  output[25] = step[25] + step[26];
+  output[26] = step[25] - step[26];
+  output[27] = step[24] - step[27];
+  output[28] = step[31] - step[28];
+  output[29] = step[30] - step[29];
+  output[30] = step[30] + step[29];
+  output[31] = step[31] + step[28];
+
+  range_check(output, 32, 18);
+
+  // stage 6
+  step[0] = output[0];
+  step[1] = output[1];
+  step[2] = output[2];
+  step[3] = output[3];
+  temp = output[4] * cospi_28_64 + output[7] * cospi_4_64;
+  step[4] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[5] * cospi_12_64 + output[6] * cospi_20_64;
+  step[5] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64;
+  step[6] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64;
+  step[7] = (tran_low_t)fdct_round_shift(temp);
+  step[8] = output[8] + output[9];
+  step[9] = output[8] - output[9];
+  step[10] = output[11] - output[10];
+  step[11] = output[11] + output[10];
+  step[12] = output[12] + output[13];
+  step[13] = output[12] - output[13];
+  step[14] = output[15] - output[14];
+  step[15] = output[15] + output[14];
+  step[16] = output[16];
+  temp = output[17] * -cospi_4_64 + output[30] * cospi_28_64;
+  step[17] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[18] * -cospi_28_64 + output[29] * -cospi_4_64;
+  step[18] = (tran_low_t)fdct_round_shift(temp);
+  step[19] = output[19];
+  step[20] = output[20];
+  temp = output[21] * -cospi_20_64 + output[26] * cospi_12_64;
+  step[21] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[22] * -cospi_12_64 + output[25] * -cospi_20_64;
+  step[22] = (tran_low_t)fdct_round_shift(temp);
+  step[23] = output[23];
+  step[24] = output[24];
+  temp = output[25] * cospi_12_64 + output[22] * -cospi_20_64;
+  step[25] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[26] * cospi_20_64 + output[21] * cospi_12_64;
+  step[26] = (tran_low_t)fdct_round_shift(temp);
+  step[27] = output[27];
+  step[28] = output[28];
+  temp = output[29] * cospi_28_64 + output[18] * -cospi_4_64;
+  step[29] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[30] * cospi_4_64 + output[17] * cospi_28_64;
+  step[30] = (tran_low_t)fdct_round_shift(temp);
+  step[31] = output[31];
+
+  range_check(step, 32, 18);
+
+  // stage 7
+  output[0] = step[0];
+  output[1] = step[1];
+  output[2] = step[2];
+  output[3] = step[3];
+  output[4] = step[4];
+  output[5] = step[5];
+  output[6] = step[6];
+  output[7] = step[7];
+  temp = step[8] * cospi_30_64 + step[15] * cospi_2_64;
+  output[8] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[9] * cospi_14_64 + step[14] * cospi_18_64;
+  output[9] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[10] * cospi_22_64 + step[13] * cospi_10_64;
+  output[10] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[11] * cospi_6_64 + step[12] * cospi_26_64;
+  output[11] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[12] * cospi_6_64 + step[11] * -cospi_26_64;
+  output[12] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[13] * cospi_22_64 + step[10] * -cospi_10_64;
+  output[13] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[14] * cospi_14_64 + step[9] * -cospi_18_64;
+  output[14] = (tran_low_t)fdct_round_shift(temp);
+  temp = step[15] * cospi_30_64 + step[8] * -cospi_2_64;
+  output[15] = (tran_low_t)fdct_round_shift(temp);
+  output[16] = step[16] + step[17];
+  output[17] = step[16] - step[17];
+  output[18] = step[19] - step[18];
+  output[19] = step[19] + step[18];
+  output[20] = step[20] + step[21];
+  output[21] = step[20] - step[21];
+  output[22] = step[23] - step[22];
+  output[23] = step[23] + step[22];
+  output[24] = step[24] + step[25];
+  output[25] = step[24] - step[25];
+  output[26] = step[27] - step[26];
+  output[27] = step[27] + step[26];
+  output[28] = step[28] + step[29];
+  output[29] = step[28] - step[29];
+  output[30] = step[31] - step[30];
+  output[31] = step[31] + step[30];
+
+  range_check(output, 32, 18);
+
+  // stage 8
+  step[0] = output[0];
+  step[1] = output[1];
+  step[2] = output[2];
+  step[3] = output[3];
+  step[4] = output[4];
+  step[5] = output[5];
+  step[6] = output[6];
+  step[7] = output[7];
+  step[8] = output[8];
+  step[9] = output[9];
+  step[10] = output[10];
+  step[11] = output[11];
+  step[12] = output[12];
+  step[13] = output[13];
+  step[14] = output[14];
+  step[15] = output[15];
+  temp = output[16] * cospi_31_64 + output[31] * cospi_1_64;
+  step[16] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[17] * cospi_15_64 + output[30] * cospi_17_64;
+  step[17] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[18] * cospi_23_64 + output[29] * cospi_9_64;
+  step[18] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[19] * cospi_7_64 + output[28] * cospi_25_64;
+  step[19] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[20] * cospi_27_64 + output[27] * cospi_5_64;
+  step[20] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[21] * cospi_11_64 + output[26] * cospi_21_64;
+  step[21] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[22] * cospi_19_64 + output[25] * cospi_13_64;
+  step[22] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[23] * cospi_3_64 + output[24] * cospi_29_64;
+  step[23] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[24] * cospi_3_64 + output[23] * -cospi_29_64;
+  step[24] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[25] * cospi_19_64 + output[22] * -cospi_13_64;
+  step[25] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[26] * cospi_11_64 + output[21] * -cospi_21_64;
+  step[26] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[27] * cospi_27_64 + output[20] * -cospi_5_64;
+  step[27] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[28] * cospi_7_64 + output[19] * -cospi_25_64;
+  step[28] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[29] * cospi_23_64 + output[18] * -cospi_9_64;
+  step[29] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[30] * cospi_15_64 + output[17] * -cospi_17_64;
+  step[30] = (tran_low_t)fdct_round_shift(temp);
+  temp = output[31] * cospi_31_64 + output[16] * -cospi_1_64;
+  step[31] = (tran_low_t)fdct_round_shift(temp);
+
+  range_check(step, 32, 18);
+
+  // stage 9
+  output[0] = step[0];
+  output[1] = step[16];
+  output[2] = step[8];
+  output[3] = step[24];
+  output[4] = step[4];
+  output[5] = step[20];
+  output[6] = step[12];
+  output[7] = step[28];
+  output[8] = step[2];
+  output[9] = step[18];
+  output[10] = step[10];
+  output[11] = step[26];
+  output[12] = step[6];
+  output[13] = step[22];
+  output[14] = step[14];
+  output[15] = step[30];
+  output[16] = step[1];
+  output[17] = step[17];
+  output[18] = step[9];
+  output[19] = step[25];
+  output[20] = step[5];
+  output[21] = step[21];
+  output[22] = step[13];
+  output[23] = step[29];
+  output[24] = step[3];
+  output[25] = step[19];
+  output[26] = step[11];
+  output[27] = step[27];
+  output[28] = step[7];
+  output[29] = step[23];
+  output[30] = step[15];
+  output[31] = step[31];
+
+  range_check(output, 32, 18);
+}
+
+#ifndef AV1_DCT_GTEST
+
+static void fadst4(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t x0, x1, x2, x3;
+  tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
+
+  x0 = input[0];
+  x1 = input[1];
+  x2 = input[2];
+  x3 = input[3];
+
+  if (!(x0 | x1 | x2 | x3)) {
+    output[0] = output[1] = output[2] = output[3] = 0;
+    return;
+  }
+
+  s0 = sinpi_1_9 * x0;
+  s1 = sinpi_4_9 * x0;
+  s2 = sinpi_2_9 * x1;
+  s3 = sinpi_1_9 * x1;
+  s4 = sinpi_3_9 * x2;
+  s5 = sinpi_4_9 * x3;
+  s6 = sinpi_2_9 * x3;
+  s7 = x0 + x1 - x3;
+
+  x0 = s0 + s2 + s5;
+  x1 = sinpi_3_9 * s7;
+  x2 = s1 - s3 + s6;
+  x3 = s4;
+
+  s0 = x0 + x3;
+  s1 = x1;
+  s2 = x2 - x3;
+  s3 = x2 - x0 + x3;
+
+  // 1-D transform scaling factor is sqrt(2).
+  output[0] = (tran_low_t)fdct_round_shift(s0);
+  output[1] = (tran_low_t)fdct_round_shift(s1);
+  output[2] = (tran_low_t)fdct_round_shift(s2);
+  output[3] = (tran_low_t)fdct_round_shift(s3);
+}
+
+static void fadst8(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
+
+  tran_high_t x0 = input[7];
+  tran_high_t x1 = input[0];
+  tran_high_t x2 = input[5];
+  tran_high_t x3 = input[2];
+  tran_high_t x4 = input[3];
+  tran_high_t x5 = input[4];
+  tran_high_t x6 = input[1];
+  tran_high_t x7 = input[6];
+
+  // stage 1
+  s0 = cospi_2_64 * x0 + cospi_30_64 * x1;
+  s1 = cospi_30_64 * x0 - cospi_2_64 * x1;
+  s2 = cospi_10_64 * x2 + cospi_22_64 * x3;
+  s3 = cospi_22_64 * x2 - cospi_10_64 * x3;
+  s4 = cospi_18_64 * x4 + cospi_14_64 * x5;
+  s5 = cospi_14_64 * x4 - cospi_18_64 * x5;
+  s6 = cospi_26_64 * x6 + cospi_6_64 * x7;
+  s7 = cospi_6_64 * x6 - cospi_26_64 * x7;
+
+  x0 = s0 + s4;
+  x1 = s1 + s5;
+  x2 = s2 + s6;
+  x3 = s3 + s7;
+  x4 = fdct_round_shift(s0 - s4);
+  x5 = fdct_round_shift(s1 - s5);
+  x6 = fdct_round_shift(s2 - s6);
+  x7 = fdct_round_shift(s3 - s7);
+
+  // stage 2
+  s0 = x0;
+  s1 = x1;
+  s2 = x2;
+  s3 = x3;
+  s4 = cospi_8_64 * x4 + cospi_24_64 * x5;
+  s5 = cospi_24_64 * x4 - cospi_8_64 * x5;
+  s6 = -cospi_24_64 * x6 + cospi_8_64 * x7;
+  s7 = cospi_8_64 * x6 + cospi_24_64 * x7;
+
+  x0 = fdct_round_shift(s0 + s2);
+  x1 = fdct_round_shift(s1 + s3);
+  x2 = fdct_round_shift(s0 - s2);
+  x3 = fdct_round_shift(s1 - s3);
+  x4 = fdct_round_shift(s4 + s6);
+  x5 = fdct_round_shift(s5 + s7);
+  x6 = fdct_round_shift(s4 - s6);
+  x7 = fdct_round_shift(s5 - s7);
+
+  // stage 3
+  s2 = cospi_16_64 * (x2 + x3);
+  s3 = cospi_16_64 * (x2 - x3);
+  s6 = cospi_16_64 * (x6 + x7);
+  s7 = cospi_16_64 * (x6 - x7);
+
+  x2 = fdct_round_shift(s2);
+  x3 = fdct_round_shift(s3);
+  x6 = fdct_round_shift(s6);
+  x7 = fdct_round_shift(s7);
+
+  output[0] = (tran_low_t)x0;
+  output[1] = (tran_low_t)-x4;
+  output[2] = (tran_low_t)x6;
+  output[3] = (tran_low_t)-x2;
+  output[4] = (tran_low_t)x3;
+  output[5] = (tran_low_t)-x7;
+  output[6] = (tran_low_t)x5;
+  output[7] = (tran_low_t)-x1;
+}
+
+static void fadst16(const tran_low_t *input, tran_low_t *output) {
+  tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8;
+  tran_high_t s9, s10, s11, s12, s13, s14, s15;
+
+  tran_high_t x0 = input[15];
+  tran_high_t x1 = input[0];
+  tran_high_t x2 = input[13];
+  tran_high_t x3 = input[2];
+  tran_high_t x4 = input[11];
+  tran_high_t x5 = input[4];
+  tran_high_t x6 = input[9];
+  tran_high_t x7 = input[6];
+  tran_high_t x8 = input[7];
+  tran_high_t x9 = input[8];
+  tran_high_t x10 = input[5];
+  tran_high_t x11 = input[10];
+  tran_high_t x12 = input[3];
+  tran_high_t x13 = input[12];
+  tran_high_t x14 = input[1];
+  tran_high_t x15 = input[14];
+
+  // stage 1
+  s0 = x0 * cospi_1_64 + x1 * cospi_31_64;
+  s1 = x0 * cospi_31_64 - x1 * cospi_1_64;
+  s2 = x2 * cospi_5_64 + x3 * cospi_27_64;
+  s3 = x2 * cospi_27_64 - x3 * cospi_5_64;
+  s4 = x4 * cospi_9_64 + x5 * cospi_23_64;
+  s5 = x4 * cospi_23_64 - x5 * cospi_9_64;
+  s6 = x6 * cospi_13_64 + x7 * cospi_19_64;
+  s7 = x6 * cospi_19_64 - x7 * cospi_13_64;
+  s8 = x8 * cospi_17_64 + x9 * cospi_15_64;
+  s9 = x8 * cospi_15_64 - x9 * cospi_17_64;
+  s10 = x10 * cospi_21_64 + x11 * cospi_11_64;
+  s11 = x10 * cospi_11_64 - x11 * cospi_21_64;
+  s12 = x12 * cospi_25_64 + x13 * cospi_7_64;
+  s13 = x12 * cospi_7_64 - x13 * cospi_25_64;
+  s14 = x14 * cospi_29_64 + x15 * cospi_3_64;
+  s15 = x14 * cospi_3_64 - x15 * cospi_29_64;
+
+  x0 = s0 + s8;
+  x1 = s1 + s9;
+  x2 = s2 + s10;
+  x3 = s3 + s11;
+  x4 = s4 + s12;
+  x5 = s5 + s13;
+  x6 = s6 + s14;
+  x7 = s7 + s15;
+
+  x8 = fdct_round_shift(s0 - s8);
+  x9 = fdct_round_shift(s1 - s9);
+  x10 = fdct_round_shift(s2 - s10);
+  x11 = fdct_round_shift(s3 - s11);
+  x12 = fdct_round_shift(s4 - s12);
+  x13 = fdct_round_shift(s5 - s13);
+  x14 = fdct_round_shift(s6 - s14);
+  x15 = fdct_round_shift(s7 - s15);
+
+  // stage 2
+  s0 = x0;
+  s1 = x1;
+  s2 = x2;
+  s3 = x3;
+  s4 = x4;
+  s5 = x5;
+  s6 = x6;
+  s7 = x7;
+  s8 = x8 * cospi_4_64 + x9 * cospi_28_64;
+  s9 = x8 * cospi_28_64 - x9 * cospi_4_64;
+  s10 = x10 * cospi_20_64 + x11 * cospi_12_64;
+  s11 = x10 * cospi_12_64 - x11 * cospi_20_64;
+  s12 = -x12 * cospi_28_64 + x13 * cospi_4_64;
+  s13 = x12 * cospi_4_64 + x13 * cospi_28_64;
+  s14 = -x14 * cospi_12_64 + x15 * cospi_20_64;
+  s15 = x14 * cospi_20_64 + x15 * cospi_12_64;
+
+  x0 = s0 + s4;
+  x1 = s1 + s5;
+  x2 = s2 + s6;
+  x3 = s3 + s7;
+  x4 = fdct_round_shift(s0 - s4);
+  x5 = fdct_round_shift(s1 - s5);
+  x6 = fdct_round_shift(s2 - s6);
+  x7 = fdct_round_shift(s3 - s7);
+
+  x8 = s8 + s12;
+  x9 = s9 + s13;
+  x10 = s10 + s14;
+  x11 = s11 + s15;
+  x12 = fdct_round_shift(s8 - s12);
+  x13 = fdct_round_shift(s9 - s13);
+  x14 = fdct_round_shift(s10 - s14);
+  x15 = fdct_round_shift(s11 - s15);
+
+  // stage 3
+  s0 = x0;
+  s1 = x1;
+  s2 = x2;
+  s3 = x3;
+  s4 = x4 * cospi_8_64 + x5 * cospi_24_64;
+  s5 = x4 * cospi_24_64 - x5 * cospi_8_64;
+  s6 = -x6 * cospi_24_64 + x7 * cospi_8_64;
+  s7 = x6 * cospi_8_64 + x7 * cospi_24_64;
+  s8 = x8;
+  s9 = x9;
+  s10 = x10;
+  s11 = x11;
+  s12 = x12 * cospi_8_64 + x13 * cospi_24_64;
+  s13 = x12 * cospi_24_64 - x13 * cospi_8_64;
+  s14 = -x14 * cospi_24_64 + x15 * cospi_8_64;
+  s15 = x14 * cospi_8_64 + x15 * cospi_24_64;
+
+  x0 = fdct_round_shift(s0 + s2);
+  x1 = fdct_round_shift(s1 + s3);
+  x2 = fdct_round_shift(s0 - s2);
+  x3 = fdct_round_shift(s1 - s3);
+
+  x4 = fdct_round_shift(s4 + s6);
+  x5 = fdct_round_shift(s5 + s7);
+  x6 = fdct_round_shift(s4 - s6);
+  x7 = fdct_round_shift(s5 - s7);
+
+  x8 = fdct_round_shift(s8 + s10);
+  x9 = fdct_round_shift(s9 + s11);
+  x10 = fdct_round_shift(s8 - s10);
+  x11 = fdct_round_shift(s9 - s11);
+
+  x12 = fdct_round_shift(s12 + s14);
+  x13 = fdct_round_shift(s13 + s15);
+  x14 = fdct_round_shift(s12 - s14);
+  x15 = fdct_round_shift(s13 - s15);
+
+  // stage 4
+  s2 = (-cospi_16_64) * (x2 + x3);
+  s3 = cospi_16_64 * (x2 - x3);
+  s6 = cospi_16_64 * (x6 + x7);
+  s7 = cospi_16_64 * (-x6 + x7);
+  s10 = cospi_16_64 * (x10 + x11);
+  s11 = cospi_16_64 * (-x10 + x11);
+  s14 = (-cospi_16_64) * (x14 + x15);
+  s15 = cospi_16_64 * (x14 - x15);
+
+  x2 = fdct_round_shift(s2);
+  x3 = fdct_round_shift(s3);
+  x6 = fdct_round_shift(s6);
+  x7 = fdct_round_shift(s7);
+  x10 = fdct_round_shift(s10);
+  x11 = fdct_round_shift(s11);
+  x14 = fdct_round_shift(s14);
+  x15 = fdct_round_shift(s15);
+
+  output[0] = (tran_low_t)x0;
+  output[1] = (tran_low_t)-x8;
+  output[2] = (tran_low_t)x12;
+  output[3] = (tran_low_t)-x4;
+  output[4] = (tran_low_t)x6;
+  output[5] = (tran_low_t)x14;
+  output[6] = (tran_low_t)x10;
+  output[7] = (tran_low_t)x2;
+  output[8] = (tran_low_t)x3;
+  output[9] = (tran_low_t)x11;
+  output[10] = (tran_low_t)x15;
+  output[11] = (tran_low_t)x7;
+  output[12] = (tran_low_t)x5;
+  output[13] = (tran_low_t)-x13;
+  output[14] = (tran_low_t)x9;
+  output[15] = (tran_low_t)-x1;
+}
+
+// For use in lieu of ADST
+static void fhalfright32(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  tran_low_t inputhalf[16];
+  for (i = 0; i < 16; ++i) {
+    output[16 + i] = input[i] * 4;
+  }
+  // Multiply input by sqrt(2)
+  for (i = 0; i < 16; ++i) {
+    inputhalf[i] = (tran_low_t)fdct_round_shift(input[i + 16] * Sqrt2);
+  }
+  fdct16(inputhalf, output);
+  // Note overall scaling factor is 4 times orthogonal
+}
+
+#if CONFIG_EXT_TX
+static void fidtx4(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 4; ++i)
+    output[i] = (tran_low_t)fdct_round_shift(input[i] * Sqrt2);
+}
+
+static void fidtx8(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 8; ++i) output[i] = input[i] * 2;
+}
+
+static void fidtx16(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 16; ++i)
+    output[i] = (tran_low_t)fdct_round_shift(input[i] * 2 * Sqrt2);
+}
+
+static void fidtx32(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 32; ++i) output[i] = input[i] * 4;
+}
+
+static void copy_block(const int16_t *src, int src_stride, int l, int w,
+                       int16_t *dest, int dest_stride) {
+  int i;
+  for (i = 0; i < l; ++i) {
+    memcpy(dest + dest_stride * i, src + src_stride * i, w * sizeof(int16_t));
+  }
+}
+
+static void fliplr(int16_t *dest, int stride, int l, int w) {
+  int i, j;
+  for (i = 0; i < l; ++i) {
+    for (j = 0; j < w / 2; ++j) {
+      const int16_t tmp = dest[i * stride + j];
+      dest[i * stride + j] = dest[i * stride + w - 1 - j];
+      dest[i * stride + w - 1 - j] = tmp;
+    }
+  }
+}
+
+static void flipud(int16_t *dest, int stride, int l, int w) {
+  int i, j;
+  for (j = 0; j < w; ++j) {
+    for (i = 0; i < l / 2; ++i) {
+      const int16_t tmp = dest[i * stride + j];
+      dest[i * stride + j] = dest[(l - 1 - i) * stride + j];
+      dest[(l - 1 - i) * stride + j] = tmp;
+    }
+  }
+}
+
+static void fliplrud(int16_t *dest, int stride, int l, int w) {
+  int i, j;
+  for (i = 0; i < l / 2; ++i) {
+    for (j = 0; j < w; ++j) {
+      const int16_t tmp = dest[i * stride + j];
+      dest[i * stride + j] = dest[(l - 1 - i) * stride + w - 1 - j];
+      dest[(l - 1 - i) * stride + w - 1 - j] = tmp;
+    }
+  }
+}
+
+static void copy_fliplr(const int16_t *src, int src_stride, int l, int w,
+                        int16_t *dest, int dest_stride) {
+  copy_block(src, src_stride, l, w, dest, dest_stride);
+  fliplr(dest, dest_stride, l, w);
+}
+
+static void copy_flipud(const int16_t *src, int src_stride, int l, int w,
+                        int16_t *dest, int dest_stride) {
+  copy_block(src, src_stride, l, w, dest, dest_stride);
+  flipud(dest, dest_stride, l, w);
+}
+
+static void copy_fliplrud(const int16_t *src, int src_stride, int l, int w,
+                          int16_t *dest, int dest_stride) {
+  copy_block(src, src_stride, l, w, dest, dest_stride);
+  fliplrud(dest, dest_stride, l, w);
+}
+
+static void maybe_flip_input(const int16_t **src, int *src_stride, int l, int w,
+                             int16_t *buff, int tx_type) {
+  switch (tx_type) {
+    case DCT_DCT:
+    case ADST_DCT:
+    case DCT_ADST:
+    case ADST_ADST:
+    case IDTX:
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST: break;
+    case FLIPADST_DCT:
+    case FLIPADST_ADST:
+    case V_FLIPADST:
+      copy_flipud(*src, *src_stride, l, w, buff, w);
+      *src = buff;
+      *src_stride = w;
+      break;
+    case DCT_FLIPADST:
+    case ADST_FLIPADST:
+    case H_FLIPADST:
+      copy_fliplr(*src, *src_stride, l, w, buff, w);
+      *src = buff;
+      *src_stride = w;
+      break;
+    case FLIPADST_FLIPADST:
+      copy_fliplrud(*src, *src_stride, l, w, buff, w);
+      *src = buff;
+      *src_stride = w;
+      break;
+    default: assert(0); break;
+  }
+}
+#endif  // CONFIG_EXT_TX
+
+void av1_fht4x4_c(const int16_t *input, tran_low_t *output, int stride,
+                  int tx_type) {
+  if (tx_type == DCT_DCT) {
+    aom_fdct4x4_c(input, output, stride);
+  } else {
+    static const transform_2d FHT[] = {
+      { fdct4, fdct4 },    // DCT_DCT
+      { fadst4, fdct4 },   // ADST_DCT
+      { fdct4, fadst4 },   // DCT_ADST
+      { fadst4, fadst4 },  // ADST_ADST
+#if CONFIG_EXT_TX
+      { fadst4, fdct4 },   // FLIPADST_DCT
+      { fdct4, fadst4 },   // DCT_FLIPADST
+      { fadst4, fadst4 },  // FLIPADST_FLIPADST
+      { fadst4, fadst4 },  // ADST_FLIPADST
+      { fadst4, fadst4 },  // FLIPADST_ADST
+      { fidtx4, fidtx4 },  // IDTX
+      { fdct4, fidtx4 },   // V_DCT
+      { fidtx4, fdct4 },   // H_DCT
+      { fadst4, fidtx4 },  // V_ADST
+      { fidtx4, fadst4 },  // H_ADST
+      { fadst4, fidtx4 },  // V_FLIPADST
+      { fidtx4, fadst4 },  // H_FLIPADST
+#endif                     // CONFIG_EXT_TX
+    };
+    const transform_2d ht = FHT[tx_type];
+    tran_low_t out[4 * 4];
+    int i, j;
+    tran_low_t temp_in[4], temp_out[4];
+
+#if CONFIG_EXT_TX
+    int16_t flipped_input[4 * 4];
+    maybe_flip_input(&input, &stride, 4, 4, flipped_input, tx_type);
+#endif
+
+    // Columns
+    for (i = 0; i < 4; ++i) {
+      for (j = 0; j < 4; ++j) temp_in[j] = input[j * stride + i] * 16;
+      if (i == 0 && temp_in[0]) temp_in[0] += 1;
+      ht.cols(temp_in, temp_out);
+      for (j = 0; j < 4; ++j) out[j * 4 + i] = temp_out[j];
+    }
+
+    // Rows
+    for (i = 0; i < 4; ++i) {
+      for (j = 0; j < 4; ++j) temp_in[j] = out[j + i * 4];
+      ht.rows(temp_in, temp_out);
+      for (j = 0; j < 4; ++j) output[j + i * 4] = (temp_out[j] + 1) >> 2;
+    }
+  }
+}
+
+void av1_fht4x8_c(const int16_t *input, tran_low_t *output, int stride,
+                  int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct8, fdct4 },    // DCT_DCT
+    { fadst8, fdct4 },   // ADST_DCT
+    { fdct8, fadst4 },   // DCT_ADST
+    { fadst8, fadst4 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst8, fdct4 },   // FLIPADST_DCT
+    { fdct8, fadst4 },   // DCT_FLIPADST
+    { fadst8, fadst4 },  // FLIPADST_FLIPADST
+    { fadst8, fadst4 },  // ADST_FLIPADST
+    { fadst8, fadst4 },  // FLIPADST_ADST
+    { fidtx8, fidtx4 },  // IDTX
+    { fdct8, fidtx4 },   // V_DCT
+    { fidtx8, fdct4 },   // H_DCT
+    { fadst8, fidtx4 },  // V_ADST
+    { fidtx8, fadst4 },  // H_ADST
+    { fadst8, fidtx4 },  // V_FLIPADST
+    { fidtx8, fadst4 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 4;
+  const int n2 = 8;
+  tran_low_t out[8 * 4];
+  tran_low_t temp_in[8], temp_out[8];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[8 * 4];
+  maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type);
+#endif
+
+  // Rows
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2);
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n2 + i] = temp_out[j];
+  }
+
+  // Columns
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n2; ++j)
+      output[i + j * n] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht8x4_c(const int16_t *input, tran_low_t *output, int stride,
+                  int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct4, fdct8 },    // DCT_DCT
+    { fadst4, fdct8 },   // ADST_DCT
+    { fdct4, fadst8 },   // DCT_ADST
+    { fadst4, fadst8 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst4, fdct8 },   // FLIPADST_DCT
+    { fdct4, fadst8 },   // DCT_FLIPADST
+    { fadst4, fadst8 },  // FLIPADST_FLIPADST
+    { fadst4, fadst8 },  // ADST_FLIPADST
+    { fadst4, fadst8 },  // FLIPADST_ADST
+    { fidtx4, fidtx8 },  // IDTX
+    { fdct4, fidtx8 },   // V_DCT
+    { fidtx4, fdct8 },   // H_DCT
+    { fadst4, fidtx8 },  // V_ADST
+    { fidtx4, fadst8 },  // H_ADST
+    { fadst4, fidtx8 },  // V_FLIPADST
+    { fidtx4, fadst8 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 4;
+  const int n2 = 8;
+  tran_low_t out[8 * 4];
+  tran_low_t temp_in[8], temp_out[8];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[8 * 4];
+  maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2);
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n2 + i] = temp_out[j];
+  }
+
+  // Rows
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n2; ++j)
+      output[j + i * n2] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht4x16_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct16, fdct4 },    // DCT_DCT
+    { fadst16, fdct4 },   // ADST_DCT
+    { fdct16, fadst4 },   // DCT_ADST
+    { fadst16, fadst4 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst16, fdct4 },   // FLIPADST_DCT
+    { fdct16, fadst4 },   // DCT_FLIPADST
+    { fadst16, fadst4 },  // FLIPADST_FLIPADST
+    { fadst16, fadst4 },  // ADST_FLIPADST
+    { fadst16, fadst4 },  // FLIPADST_ADST
+    { fidtx16, fidtx4 },  // IDTX
+    { fdct16, fidtx4 },   // V_DCT
+    { fidtx16, fdct4 },   // H_DCT
+    { fadst16, fidtx4 },  // V_ADST
+    { fidtx16, fadst4 },  // H_ADST
+    { fadst16, fidtx4 },  // V_FLIPADST
+    { fidtx16, fadst4 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 4;
+  const int n4 = 16;
+  tran_low_t out[16 * 4];
+  tran_low_t temp_in[16], temp_out[16];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[16 * 4];
+  maybe_flip_input(&input, &stride, n4, n, flipped_input, tx_type);
+#endif
+
+  // Rows
+  for (i = 0; i < n4; ++i) {
+    for (j = 0; j < n; ++j) temp_in[j] = input[i * stride + j] * 4;
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j];
+  }
+
+  // Columns
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n4; ++j)
+      output[i + j * n] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht16x4_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct4, fdct16 },    // DCT_DCT
+    { fadst4, fdct16 },   // ADST_DCT
+    { fdct4, fadst16 },   // DCT_ADST
+    { fadst4, fadst16 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst4, fdct16 },   // FLIPADST_DCT
+    { fdct4, fadst16 },   // DCT_FLIPADST
+    { fadst4, fadst16 },  // FLIPADST_FLIPADST
+    { fadst4, fadst16 },  // ADST_FLIPADST
+    { fadst4, fadst16 },  // FLIPADST_ADST
+    { fidtx4, fidtx16 },  // IDTX
+    { fdct4, fidtx16 },   // V_DCT
+    { fidtx4, fdct16 },   // H_DCT
+    { fadst4, fidtx16 },  // V_ADST
+    { fidtx4, fadst16 },  // H_ADST
+    { fadst4, fidtx16 },  // V_FLIPADST
+    { fidtx4, fadst16 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 4;
+  const int n4 = 16;
+  tran_low_t out[16 * 4];
+  tran_low_t temp_in[16], temp_out[16];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[16 * 4];
+  maybe_flip_input(&input, &stride, n, n4, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < n4; ++i) {
+    for (j = 0; j < n; ++j) temp_in[j] = input[j * stride + i] * 4;
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j];
+  }
+
+  // Rows
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n4; ++j)
+      output[j + i * n4] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht8x16_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct16, fdct8 },    // DCT_DCT
+    { fadst16, fdct8 },   // ADST_DCT
+    { fdct16, fadst8 },   // DCT_ADST
+    { fadst16, fadst8 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst16, fdct8 },   // FLIPADST_DCT
+    { fdct16, fadst8 },   // DCT_FLIPADST
+    { fadst16, fadst8 },  // FLIPADST_FLIPADST
+    { fadst16, fadst8 },  // ADST_FLIPADST
+    { fadst16, fadst8 },  // FLIPADST_ADST
+    { fidtx16, fidtx8 },  // IDTX
+    { fdct16, fidtx8 },   // V_DCT
+    { fidtx16, fdct8 },   // H_DCT
+    { fadst16, fidtx8 },  // V_ADST
+    { fidtx16, fadst8 },  // H_ADST
+    { fadst16, fidtx8 },  // V_FLIPADST
+    { fidtx16, fadst8 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 8;
+  const int n2 = 16;
+  tran_low_t out[16 * 8];
+  tran_low_t temp_in[16], temp_out[16];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[16 * 8];
+  maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type);
+#endif
+
+  // Rows
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2);
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n; ++j)
+      out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2);
+  }
+
+  // Columns
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n2; ++j) output[i + j * n] = temp_out[j];
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht16x8_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct8, fdct16 },    // DCT_DCT
+    { fadst8, fdct16 },   // ADST_DCT
+    { fdct8, fadst16 },   // DCT_ADST
+    { fadst8, fadst16 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst8, fdct16 },   // FLIPADST_DCT
+    { fdct8, fadst16 },   // DCT_FLIPADST
+    { fadst8, fadst16 },  // FLIPADST_FLIPADST
+    { fadst8, fadst16 },  // ADST_FLIPADST
+    { fadst8, fadst16 },  // FLIPADST_ADST
+    { fidtx8, fidtx16 },  // IDTX
+    { fdct8, fidtx16 },   // V_DCT
+    { fidtx8, fdct16 },   // H_DCT
+    { fadst8, fidtx16 },  // V_ADST
+    { fidtx8, fadst16 },  // H_ADST
+    { fadst8, fidtx16 },  // V_FLIPADST
+    { fidtx8, fadst16 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 8;
+  const int n2 = 16;
+  tran_low_t out[16 * 8];
+  tran_low_t temp_in[16], temp_out[16];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[16 * 8];
+  maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2);
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n; ++j)
+      out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2);
+  }
+
+  // Rows
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n2; ++j) output[j + i * n2] = temp_out[j];
+  }
+  // Note: overall scale factor of transform is 8 times unitary
+}
+
+void av1_fht8x32_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct32, fdct8 },         // DCT_DCT
+    { fhalfright32, fdct8 },   // ADST_DCT
+    { fdct32, fadst8 },        // DCT_ADST
+    { fhalfright32, fadst8 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fhalfright32, fdct8 },   // FLIPADST_DCT
+    { fdct32, fadst8 },        // DCT_FLIPADST
+    { fhalfright32, fadst8 },  // FLIPADST_FLIPADST
+    { fhalfright32, fadst8 },  // ADST_FLIPADST
+    { fhalfright32, fadst8 },  // FLIPADST_ADST
+    { fidtx32, fidtx8 },       // IDTX
+    { fdct32, fidtx8 },        // V_DCT
+    { fidtx32, fdct8 },        // H_DCT
+    { fhalfright32, fidtx8 },  // V_ADST
+    { fidtx32, fadst8 },       // H_ADST
+    { fhalfright32, fidtx8 },  // V_FLIPADST
+    { fidtx32, fadst8 },       // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 8;
+  const int n4 = 32;
+  tran_low_t out[32 * 8];
+  tran_low_t temp_in[32], temp_out[32];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[32 * 8];
+  maybe_flip_input(&input, &stride, n4, n, flipped_input, tx_type);
+#endif
+
+  // Rows
+  for (i = 0; i < n4; ++i) {
+    for (j = 0; j < n; ++j) temp_in[j] = input[i * stride + j] * 4;
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j];
+  }
+
+  // Columns
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n4; ++j)
+      output[i + j * n] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2);
+  }
+  // Note: overall scale factor of transform is 4 times unitary
+}
+
+void av1_fht32x8_c(const int16_t *input, tran_low_t *output, int stride,
+                   int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct8, fdct32 },         // DCT_DCT
+    { fadst8, fdct32 },        // ADST_DCT
+    { fdct8, fhalfright32 },   // DCT_ADST
+    { fadst8, fhalfright32 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst8, fdct32 },        // FLIPADST_DCT
+    { fdct8, fhalfright32 },   // DCT_FLIPADST
+    { fadst8, fhalfright32 },  // FLIPADST_FLIPADST
+    { fadst8, fhalfright32 },  // ADST_FLIPADST
+    { fadst8, fhalfright32 },  // FLIPADST_ADST
+    { fidtx8, fidtx32 },       // IDTX
+    { fdct8, fidtx32 },        // V_DCT
+    { fidtx8, fdct32 },        // H_DCT
+    { fadst8, fidtx32 },       // V_ADST
+    { fidtx8, fhalfright32 },  // H_ADST
+    { fadst8, fidtx32 },       // V_FLIPADST
+    { fidtx8, fhalfright32 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 8;
+  const int n4 = 32;
+  tran_low_t out[32 * 8];
+  tran_low_t temp_in[32], temp_out[32];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[32 * 8];
+  maybe_flip_input(&input, &stride, n, n4, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < n4; ++i) {
+    for (j = 0; j < n; ++j) temp_in[j] = input[j * stride + i] * 4;
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j];
+  }
+
+  // Rows
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n4; ++j)
+      output[j + i * n4] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2);
+  }
+  // Note: overall scale factor of transform is 4 times unitary
+}
+
+void av1_fht16x32_c(const int16_t *input, tran_low_t *output, int stride,
+                    int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct32, fdct16 },         // DCT_DCT
+    { fhalfright32, fdct16 },   // ADST_DCT
+    { fdct32, fadst16 },        // DCT_ADST
+    { fhalfright32, fadst16 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fhalfright32, fdct16 },   // FLIPADST_DCT
+    { fdct32, fadst16 },        // DCT_FLIPADST
+    { fhalfright32, fadst16 },  // FLIPADST_FLIPADST
+    { fhalfright32, fadst16 },  // ADST_FLIPADST
+    { fhalfright32, fadst16 },  // FLIPADST_ADST
+    { fidtx32, fidtx16 },       // IDTX
+    { fdct32, fidtx16 },        // V_DCT
+    { fidtx32, fdct16 },        // H_DCT
+    { fhalfright32, fidtx16 },  // V_ADST
+    { fidtx32, fadst16 },       // H_ADST
+    { fhalfright32, fidtx16 },  // V_FLIPADST
+    { fidtx32, fadst16 },       // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 16;
+  const int n2 = 32;
+  tran_low_t out[32 * 16];
+  tran_low_t temp_in[32], temp_out[32];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[32 * 16];
+  maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type);
+#endif
+
+  // Rows
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2);
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n; ++j)
+      out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4);
+  }
+
+  // Columns
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n2; ++j) output[i + j * n] = temp_out[j];
+  }
+  // Note: overall scale factor of transform is 4 times unitary
+}
+
+void av1_fht32x16_c(const int16_t *input, tran_low_t *output, int stride,
+                    int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct16, fdct32 },         // DCT_DCT
+    { fadst16, fdct32 },        // ADST_DCT
+    { fdct16, fhalfright32 },   // DCT_ADST
+    { fadst16, fhalfright32 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst16, fdct32 },        // FLIPADST_DCT
+    { fdct16, fhalfright32 },   // DCT_FLIPADST
+    { fadst16, fhalfright32 },  // FLIPADST_FLIPADST
+    { fadst16, fhalfright32 },  // ADST_FLIPADST
+    { fadst16, fhalfright32 },  // FLIPADST_ADST
+    { fidtx16, fidtx32 },       // IDTX
+    { fdct16, fidtx32 },        // V_DCT
+    { fidtx16, fdct32 },        // H_DCT
+    { fadst16, fidtx32 },       // V_ADST
+    { fidtx16, fhalfright32 },  // H_ADST
+    { fadst16, fidtx32 },       // V_FLIPADST
+    { fidtx16, fhalfright32 },  // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  const int n = 16;
+  const int n2 = 32;
+  tran_low_t out[32 * 16];
+  tran_low_t temp_in[32], temp_out[32];
+  int i, j;
+#if CONFIG_EXT_TX
+  int16_t flipped_input[32 * 16];
+  maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < n2; ++i) {
+    for (j = 0; j < n; ++j)
+      temp_in[j] =
+          (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2);
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < n; ++j)
+      out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4);
+  }
+
+  // Rows
+  for (i = 0; i < n; ++i) {
+    for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < n2; ++j) output[j + i * n2] = temp_out[j];
+  }
+  // Note: overall scale factor of transform is 4 times unitary
+}
+
+void av1_fdct8x8_quant_c(const int16_t *input, int stride,
+                         tran_low_t *coeff_ptr, intptr_t n_coeffs,
+                         int skip_block, const int16_t *zbin_ptr,
+                         const int16_t *round_ptr, const int16_t *quant_ptr,
+                         const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr,
+                         tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr,
+                         uint16_t *eob_ptr, const int16_t *scan,
+                         const int16_t *iscan
+#if CONFIG_AOM_QM
+                         ,
+                         const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr
+#endif
+                         ) {
+  int eob = -1;
+
+  int i, j;
+  tran_low_t intermediate[64];
+
+  // Transform columns
+  {
+    tran_low_t *output = intermediate;
+    tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;  // canbe16
+    tran_high_t t0, t1, t2, t3;                  // needs32
+    tran_high_t x0, x1, x2, x3;                  // canbe16
+
+    for (i = 0; i < 8; i++) {
+      // stage 1
+      s0 = (input[0 * stride] + input[7 * stride]) * 4;
+      s1 = (input[1 * stride] + input[6 * stride]) * 4;
+      s2 = (input[2 * stride] + input[5 * stride]) * 4;
+      s3 = (input[3 * stride] + input[4 * stride]) * 4;
+      s4 = (input[3 * stride] - input[4 * stride]) * 4;
+      s5 = (input[2 * stride] - input[5 * stride]) * 4;
+      s6 = (input[1 * stride] - input[6 * stride]) * 4;
+      s7 = (input[0 * stride] - input[7 * stride]) * 4;
+
+      // fdct4(step, step);
+      x0 = s0 + s3;
+      x1 = s1 + s2;
+      x2 = s1 - s2;
+      x3 = s0 - s3;
+      t0 = (x0 + x1) * cospi_16_64;
+      t1 = (x0 - x1) * cospi_16_64;
+      t2 = x2 * cospi_24_64 + x3 * cospi_8_64;
+      t3 = -x2 * cospi_8_64 + x3 * cospi_24_64;
+      output[0 * 8] = (tran_low_t)fdct_round_shift(t0);
+      output[2 * 8] = (tran_low_t)fdct_round_shift(t2);
+      output[4 * 8] = (tran_low_t)fdct_round_shift(t1);
+      output[6 * 8] = (tran_low_t)fdct_round_shift(t3);
+
+      // stage 2
+      t0 = (s6 - s5) * cospi_16_64;
+      t1 = (s6 + s5) * cospi_16_64;
+      t2 = fdct_round_shift(t0);
+      t3 = fdct_round_shift(t1);
+
+      // stage 3
+      x0 = s4 + t2;
+      x1 = s4 - t2;
+      x2 = s7 - t3;
+      x3 = s7 + t3;
+
+      // stage 4
+      t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
+      t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
+      t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
+      t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
+      output[1 * 8] = (tran_low_t)fdct_round_shift(t0);
+      output[3 * 8] = (tran_low_t)fdct_round_shift(t2);
+      output[5 * 8] = (tran_low_t)fdct_round_shift(t1);
+      output[7 * 8] = (tran_low_t)fdct_round_shift(t3);
+      input++;
+      output++;
+    }
+  }
+
+  // Rows
+  for (i = 0; i < 8; ++i) {
+    fdct8(&intermediate[i * 8], &coeff_ptr[i * 8]);
+    for (j = 0; j < 8; ++j) coeff_ptr[j + i * 8] /= 2;
+  }
+
+  // TODO(jingning) Decide the need of these arguments after the
+  // quantization process is completed.
+  (void)zbin_ptr;
+  (void)quant_shift_ptr;
+  (void)iscan;
+
+  memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
+  memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
+
+  if (!skip_block) {
+    // Quantization pass: All coefficients with index >= zero_flag are
+    // skippable. Note: zero_flag can be zero.
+    for (i = 0; i < n_coeffs; i++) {
+      const int rc = scan[i];
+      const int coeff = coeff_ptr[rc];
+#if CONFIG_AOM_QM
+      const qm_val_t wt = qm_ptr[rc];
+      const qm_val_t iwt = iqm_ptr[rc];
+      const int dequant =
+          (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >>
+          AOM_QM_BITS;
+#endif
+      const int coeff_sign = (coeff >> 31);
+      const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
+
+      int64_t tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
+      int tmp32;
+#if CONFIG_AOM_QM
+      tmp32 = (int)((tmp * quant_ptr[rc != 0] * wt) >> (16 + AOM_QM_BITS));
+      qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
+      dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant;
+#else
+      tmp32 = (int)((tmp * quant_ptr[rc != 0]) >> 16);
+      qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
+      dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
+#endif
+
+      if (tmp32) eob = i;
+    }
+  }
+  *eob_ptr = eob + 1;
+}
+
+void av1_fht8x8_c(const int16_t *input, tran_low_t *output, int stride,
+                  int tx_type) {
+  if (tx_type == DCT_DCT) {
+    aom_fdct8x8_c(input, output, stride);
+  } else {
+    static const transform_2d FHT[] = {
+      { fdct8, fdct8 },    // DCT_DCT
+      { fadst8, fdct8 },   // ADST_DCT
+      { fdct8, fadst8 },   // DCT_ADST
+      { fadst8, fadst8 },  // ADST_ADST
+#if CONFIG_EXT_TX
+      { fadst8, fdct8 },   // FLIPADST_DCT
+      { fdct8, fadst8 },   // DCT_FLIPADST
+      { fadst8, fadst8 },  // FLIPADST_FLIPADST
+      { fadst8, fadst8 },  // ADST_FLIPADST
+      { fadst8, fadst8 },  // FLIPADST_ADST
+      { fidtx8, fidtx8 },  // IDTX
+      { fdct8, fidtx8 },   // V_DCT
+      { fidtx8, fdct8 },   // H_DCT
+      { fadst8, fidtx8 },  // V_ADST
+      { fidtx8, fadst8 },  // H_ADST
+      { fadst8, fidtx8 },  // V_FLIPADST
+      { fidtx8, fadst8 },  // H_FLIPADST
+#endif                     // CONFIG_EXT_TX
+    };
+    const transform_2d ht = FHT[tx_type];
+    tran_low_t out[64];
+    int i, j;
+    tran_low_t temp_in[8], temp_out[8];
+
+#if CONFIG_EXT_TX
+    int16_t flipped_input[8 * 8];
+    maybe_flip_input(&input, &stride, 8, 8, flipped_input, tx_type);
+#endif
+
+    // Columns
+    for (i = 0; i < 8; ++i) {
+      for (j = 0; j < 8; ++j) temp_in[j] = input[j * stride + i] * 4;
+      ht.cols(temp_in, temp_out);
+      for (j = 0; j < 8; ++j) out[j * 8 + i] = temp_out[j];
+    }
+
+    // Rows
+    for (i = 0; i < 8; ++i) {
+      for (j = 0; j < 8; ++j) temp_in[j] = out[j + i * 8];
+      ht.rows(temp_in, temp_out);
+      for (j = 0; j < 8; ++j)
+        output[j + i * 8] = (temp_out[j] + (temp_out[j] < 0)) >> 1;
+    }
+  }
+}
+
+/* 4-point reversible, orthonormal Walsh-Hadamard in 3.5 adds, 0.5 shifts per
+   pixel. */
+void av1_fwht4x4_c(const int16_t *input, tran_low_t *output, int stride) {
+  int i;
+  tran_high_t a1, b1, c1, d1, e1;
+  const int16_t *ip_pass0 = input;
+  const tran_low_t *ip = NULL;
+  tran_low_t *op = output;
+
+  for (i = 0; i < 4; i++) {
+    a1 = ip_pass0[0 * stride];
+    b1 = ip_pass0[1 * stride];
+    c1 = ip_pass0[2 * stride];
+    d1 = ip_pass0[3 * stride];
+
+    a1 += b1;
+    d1 = d1 - c1;
+    e1 = (a1 - d1) >> 1;
+    b1 = e1 - b1;
+    c1 = e1 - c1;
+    a1 -= c1;
+    d1 += b1;
+    op[0] = (tran_low_t)a1;
+    op[4] = (tran_low_t)c1;
+    op[8] = (tran_low_t)d1;
+    op[12] = (tran_low_t)b1;
+
+    ip_pass0++;
+    op++;
+  }
+  ip = output;
+  op = output;
+
+  for (i = 0; i < 4; i++) {
+    a1 = ip[0];
+    b1 = ip[1];
+    c1 = ip[2];
+    d1 = ip[3];
+
+    a1 += b1;
+    d1 -= c1;
+    e1 = (a1 - d1) >> 1;
+    b1 = e1 - b1;
+    c1 = e1 - c1;
+    a1 -= c1;
+    d1 += b1;
+    op[0] = (tran_low_t)(a1 * UNIT_QUANT_FACTOR);
+    op[1] = (tran_low_t)(c1 * UNIT_QUANT_FACTOR);
+    op[2] = (tran_low_t)(d1 * UNIT_QUANT_FACTOR);
+    op[3] = (tran_low_t)(b1 * UNIT_QUANT_FACTOR);
+
+    ip += 4;
+    op += 4;
+  }
+}
+
+void av1_fht16x16_c(const int16_t *input, tran_low_t *output, int stride,
+                    int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct16, fdct16 },    // DCT_DCT
+    { fadst16, fdct16 },   // ADST_DCT
+    { fdct16, fadst16 },   // DCT_ADST
+    { fadst16, fadst16 },  // ADST_ADST
+#if CONFIG_EXT_TX
+    { fadst16, fdct16 },   // FLIPADST_DCT
+    { fdct16, fadst16 },   // DCT_FLIPADST
+    { fadst16, fadst16 },  // FLIPADST_FLIPADST
+    { fadst16, fadst16 },  // ADST_FLIPADST
+    { fadst16, fadst16 },  // FLIPADST_ADST
+    { fidtx16, fidtx16 },  // IDTX
+    { fdct16, fidtx16 },   // V_DCT
+    { fidtx16, fdct16 },   // H_DCT
+    { fadst16, fidtx16 },  // V_ADST
+    { fidtx16, fadst16 },  // H_ADST
+    { fadst16, fidtx16 },  // V_FLIPADST
+    { fidtx16, fadst16 },  // H_FLIPADST
+#endif                     // CONFIG_EXT_TX
+  };
+
+  const transform_2d ht = FHT[tx_type];
+  tran_low_t out[256];
+  int i, j;
+  tran_low_t temp_in[16], temp_out[16];
+
+#if CONFIG_EXT_TX
+  int16_t flipped_input[16 * 16];
+  maybe_flip_input(&input, &stride, 16, 16, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < 16; ++i) {
+    for (j = 0; j < 16; ++j) temp_in[j] = input[j * stride + i] * 4;
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < 16; ++j)
+      out[j * 16 + i] = (temp_out[j] + 1 + (temp_out[j] < 0)) >> 2;
+  }
+
+  // Rows
+  for (i = 0; i < 16; ++i) {
+    for (j = 0; j < 16; ++j) temp_in[j] = out[j + i * 16];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < 16; ++j) output[j + i * 16] = temp_out[j];
+  }
+}
+
+#if CONFIG_HIGHBITDEPTH
+void av1_highbd_fht4x4_c(const int16_t *input, tran_low_t *output, int stride,
+                         int tx_type) {
+  av1_fht4x4_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht4x8_c(const int16_t *input, tran_low_t *output, int stride,
+                         int tx_type) {
+  av1_fht4x8_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht8x4_c(const int16_t *input, tran_low_t *output, int stride,
+                         int tx_type) {
+  av1_fht8x4_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht8x16_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht8x16_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht16x8_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht16x8_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht16x32_c(const int16_t *input, tran_low_t *output, int stride,
+                           int tx_type) {
+  av1_fht16x32_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht32x16_c(const int16_t *input, tran_low_t *output, int stride,
+                           int tx_type) {
+  av1_fht32x16_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht4x16_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht4x16_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht16x4_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht16x4_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht8x32_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht8x32_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht32x8_c(const int16_t *input, tran_low_t *output, int stride,
+                          int tx_type) {
+  av1_fht32x8_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fht8x8_c(const int16_t *input, tran_low_t *output, int stride,
+                         int tx_type) {
+  av1_fht8x8_c(input, output, stride, tx_type);
+}
+
+void av1_highbd_fwht4x4_c(const int16_t *input, tran_low_t *output,
+                          int stride) {
+  av1_fwht4x4_c(input, output, stride);
+}
+
+void av1_highbd_fht16x16_c(const int16_t *input, tran_low_t *output, int stride,
+                           int tx_type) {
+  av1_fht16x16_c(input, output, stride, tx_type);
+}
+#endif  // CONFIG_HIGHBITDEPTH
+
+void av1_fht32x32_c(const int16_t *input, tran_low_t *output, int stride,
+                    int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct32, fdct32 },  // DCT_DCT
+#if CONFIG_EXT_TX
+    { fhalfright32, fdct32 },        // ADST_DCT
+    { fdct32, fhalfright32 },        // DCT_ADST
+    { fhalfright32, fhalfright32 },  // ADST_ADST
+    { fhalfright32, fdct32 },        // FLIPADST_DCT
+    { fdct32, fhalfright32 },        // DCT_FLIPADST
+    { fhalfright32, fhalfright32 },  // FLIPADST_FLIPADST
+    { fhalfright32, fhalfright32 },  // ADST_FLIPADST
+    { fhalfright32, fhalfright32 },  // FLIPADST_ADST
+    { fidtx32, fidtx32 },            // IDTX
+    { fdct32, fidtx32 },             // V_DCT
+    { fidtx32, fdct32 },             // H_DCT
+    { fhalfright32, fidtx32 },       // V_ADST
+    { fidtx32, fhalfright32 },       // H_ADST
+    { fhalfright32, fidtx32 },       // V_FLIPADST
+    { fidtx32, fhalfright32 },       // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  tran_low_t out[1024];
+  int i, j;
+  tran_low_t temp_in[32], temp_out[32];
+
+#if CONFIG_EXT_TX
+  int16_t flipped_input[32 * 32];
+  maybe_flip_input(&input, &stride, 32, 32, flipped_input, tx_type);
+#endif
+
+  // Columns
+  for (i = 0; i < 32; ++i) {
+    for (j = 0; j < 32; ++j) temp_in[j] = input[j * stride + i] * 4;
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < 32; ++j)
+      out[j * 32 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4);
+  }
+
+  // Rows
+  for (i = 0; i < 32; ++i) {
+    for (j = 0; j < 32; ++j) temp_in[j] = out[j + i * 32];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < 32; ++j) output[j + i * 32] = temp_out[j];
+  }
+}
+
+#if CONFIG_TX64X64
+#if CONFIG_EXT_TX
+static void fidtx64(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 64; ++i)
+    output[i] = (tran_low_t)fdct_round_shift(input[i] * 4 * Sqrt2);
+}
+
+// For use in lieu of ADST
+static void fhalfright64(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  tran_low_t inputhalf[32];
+  for (i = 0; i < 32; ++i) {
+    output[32 + i] = (tran_low_t)fdct_round_shift(input[i] * 4 * Sqrt2);
+  }
+  // Multiply input by sqrt(2)
+  for (i = 0; i < 32; ++i) {
+    inputhalf[i] = (tran_low_t)fdct_round_shift(input[i + 32] * Sqrt2);
+  }
+  fdct32(inputhalf, output);
+  // Note overall scaling factor is 2 times unitary
+}
+#endif  // CONFIG_EXT_TX
+
+static void fdct64_col(const tran_low_t *input, tran_low_t *output) {
+  int32_t in[64], out[64];
+  int i;
+  for (i = 0; i < 64; ++i) in[i] = (int32_t)input[i];
+  av1_fdct64_new(in, out, fwd_cos_bit_col_dct_dct_64,
+                 fwd_stage_range_col_dct_dct_64);
+  for (i = 0; i < 64; ++i) output[i] = (tran_low_t)out[i];
+}
+
+static void fdct64_row(const tran_low_t *input, tran_low_t *output) {
+  int32_t in[64], out[64];
+  int i;
+  for (i = 0; i < 64; ++i) in[i] = (int32_t)input[i];
+  av1_fdct64_new(in, out, fwd_cos_bit_row_dct_dct_64,
+                 fwd_stage_range_row_dct_dct_64);
+  for (i = 0; i < 64; ++i) output[i] = (tran_low_t)out[i];
+}
+
+void av1_fht64x64_c(const int16_t *input, tran_low_t *output, int stride,
+                    int tx_type) {
+  static const transform_2d FHT[] = {
+    { fdct64_col, fdct64_row },  // DCT_DCT
+#if CONFIG_EXT_TX
+    { fhalfright64, fdct64_row },    // ADST_DCT
+    { fdct64_col, fhalfright64 },    // DCT_ADST
+    { fhalfright64, fhalfright64 },  // ADST_ADST
+    { fhalfright64, fdct64_row },    // FLIPADST_DCT
+    { fdct64_col, fhalfright64 },    // DCT_FLIPADST
+    { fhalfright64, fhalfright64 },  // FLIPADST_FLIPADST
+    { fhalfright64, fhalfright64 },  // ADST_FLIPADST
+    { fhalfright64, fhalfright64 },  // FLIPADST_ADST
+    { fidtx64, fidtx64 },            // IDTX
+    { fdct64_col, fidtx64 },         // V_DCT
+    { fidtx64, fdct64_row },         // H_DCT
+    { fhalfright64, fidtx64 },       // V_ADST
+    { fidtx64, fhalfright64 },       // H_ADST
+    { fhalfright64, fidtx64 },       // V_FLIPADST
+    { fidtx64, fhalfright64 },       // H_FLIPADST
+#endif
+  };
+  const transform_2d ht = FHT[tx_type];
+  tran_low_t out[4096];
+  int i, j;
+  tran_low_t temp_in[64], temp_out[64];
+#if CONFIG_EXT_TX
+  int16_t flipped_input[64 * 64];
+  maybe_flip_input(&input, &stride, 64, 64, flipped_input, tx_type);
+#endif
+  // Columns
+  for (i = 0; i < 64; ++i) {
+    for (j = 0; j < 64; ++j) temp_in[j] = input[j * stride + i];
+    ht.cols(temp_in, temp_out);
+    for (j = 0; j < 64; ++j)
+      out[j * 64 + i] = (temp_out[j] + 1 + (temp_out[j] > 0)) >> 2;
+  }
+
+  // Rows
+  for (i = 0; i < 64; ++i) {
+    for (j = 0; j < 64; ++j) temp_in[j] = out[j + i * 64];
+    ht.rows(temp_in, temp_out);
+    for (j = 0; j < 64; ++j)
+      output[j + i * 64] =
+          (tran_low_t)((temp_out[j] + 1 + (temp_out[j] < 0)) >> 2);
+  }
+}
+#endif  // CONFIG_TX64X64
+
+#if CONFIG_EXT_TX
+// Forward identity transform.
+void av1_fwd_idtx_c(const int16_t *src_diff, tran_low_t *coeff, int stride,
+                    int bs, int tx_type) {
+  int r, c;
+  const int shift = bs < 32 ? 3 : (bs < 64 ? 2 : 1);
+  if (tx_type == IDTX) {
+    for (r = 0; r < bs; ++r) {
+      for (c = 0; c < bs; ++c) coeff[c] = src_diff[c] * (1 << shift);
+      src_diff += stride;
+      coeff += bs;
+    }
+  }
+}
+#endif  // CONFIG_EXT_TX
+
+#if CONFIG_HIGHBITDEPTH
+void av1_highbd_fht32x32_c(const int16_t *input, tran_low_t *output, int stride,
+                           int tx_type) {
+  av1_fht32x32_c(input, output, stride, tx_type);
+}
+
+#if CONFIG_TX64X64
+void av1_highbd_fht64x64_c(const int16_t *input, tran_low_t *output, int stride,
+                           int tx_type) {
+  av1_fht64x64_c(input, output, stride, tx_type);
+}
+#endif  // CONFIG_TX64X64
+#endif  // CONFIG_HIGHBITDEPTH
+#endif  // !AV1_DCT_GTEST