1 files changed, 0 insertions, 112 deletions
diff --git a/third_party/aom/av1/common/generic_code.c b/third_party/aom/av1/common/generic_code.c
deleted file mode 100644
index 7285decc9..000000000
--- a/third_party/aom/av1/common/generic_code.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (c) 2001-2016, 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.
- */
-
-/* clang-format off */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "generic_code.h"
-
-void aom_cdf_init_q15_1D(uint16_t *cdf, int nsyms, int cdf_size) {
-  int i;
-  for (i = 0; i < nsyms; i++)
-    cdf[i] = AOM_ICDF((i + 1)*CDF_PROB_TOP/nsyms);
-
-  cdf[cdf_size - 1] = 0;
-}
-
-/** Adapts a Q15 cdf after encoding/decoding a symbol. */
-void aom_cdf_adapt_q15(int val, uint16_t *cdf, int n, int *count, int rate) {
-  int i;
-  *count = OD_MINI(*count + 1, 1 << rate);
-  OD_ASSERT(AOM_ICDF(cdf[n - 1]) == 32768);
-  if (*count >= 1 << rate) {
-    /* Steady-state adaptation based on a simple IIR with dyadic rate. */
-    for (i = 0; i < n; i++) {
-      int tmp;
-      /* When (i < val), we want the adjustment ((cdf[i] - tmp) >> rate) to be
-         positive so long as (cdf[i] > i + 1), and 0 when (cdf[i] == i + 1),
-         to ensure we don't drive any probabilities to 0. Replacing cdf[i] with
-         (i + 2) and solving ((i + 2 - tmp) >> rate == 1) for tmp produces
-         tmp == i + 2 - (1 << rate). Using this value of tmp with
-         cdf[i] == i + 1 instead gives an adjustment of 0 as desired.
-
-         When (i >= val), we want ((cdf[i] - tmp) >> rate) to be negative so
-         long as cdf[i] < 32768 - (n - 1 - i), and 0 when
-         cdf[i] == 32768 - (n - 1 - i), again to ensure we don't drive any
-         probabilities to 0. Since right-shifting any negative value is still
-         negative, we can solve (32768 - (n - 1 - i) - tmp == 0) for tmp,
-         producing tmp = 32769 - n + i. Using this value of tmp with smaller
-         values of cdf[i] instead gives negative adjustments, as desired.
-
-         Combining the two cases gives the expression below. These could be
-         stored in a lookup table indexed by n and rate to avoid the
-         arithmetic. */
-      tmp = 2 - (1<<rate) + i + (32767 + (1<<rate) - n)*(i >= val);
-      cdf[i] = AOM_ICDF(AOM_ICDF(cdf[i]) - ((AOM_ICDF(cdf[i]) - tmp) >> rate));
-    }
-  }
-  else {
-    int alpha;
-    /* Initial adaptation for the first symbols. The adaptation rate is
-       computed to be equivalent to what od_{en,de}code_cdf_adapt() does
-       when the initial cdf is set to increment/4. */
-    alpha = 4*32768/(n + 4**count);
-    for (i = 0; i < n; i++) {
-      int tmp;
-      tmp = (32768 - n)*(i >= val) + i + 1;
-      cdf[i] = AOM_ICDF(AOM_ICDF(cdf[i])
-          - (((AOM_ICDF(cdf[i]) - tmp)*alpha) >> 15));
-    }
-  }
-  OD_ASSERT(AOM_ICDF(cdf[n - 1]) == 32768);
-}
-
-/** Takes the base-2 log of E(x) in Q1.
- *
- * @param [in] ExQ16 expectation of x in Q16
- *
- * @retval 2*log2(ExQ16/2^16)
- */
-int log_ex(int ex_q16) {
-  int lg;
-  int lg_q1;
-  int odd;
-  lg = OD_ILOG(ex_q16);
-  if (lg < 15) {
-    odd = ex_q16*ex_q16 > 2 << 2*lg;
-  }
-  else {
-    int tmp;
-    tmp = ex_q16 >> (lg - 8);
-    odd = tmp*tmp > (1 << 15);
-  }
-  lg_q1 = OD_MAXI(0, 2*lg - 33 + odd);
-  return lg_q1;
-}
-
-/** Updates the probability model based on the encoded/decoded value
- *
- * @param [in,out] model generic prob model
- * @param [in,out] ExQ16 expectation of x
- * @param [in]     x     variable encoded/decoded (used for ExQ16)
- * @param [in]     xs    variable x after shift (used for the model)
- * @param [in]     id    id of the icdf to adapt
- * @param [in]     integration integration period of ExQ16 (leaky average over
- * 1<<integration samples)
- */
-void generic_model_update(int *ex_q16, int x, int integration) {
-  /* We could have saturated ExQ16 directly, but this is safe and simpler */
-  x = OD_MINI(x, 32767);
-  OD_IIR_DIADIC(*ex_q16, x << 16, integration);
-}