From 08b157da8e52a075ea72db4c020425bfa15159ea Mon Sep 17 00:00:00 2001
From: Angie Chiang <angiebird@google.com>
Date: Wed, 2 Dec 2015 16:09:56 -0800
Subject: [PATCH] comment out range_check of fdct in dct.c

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.

Change-Id: I54f27a6507f27bf475af302b4dbedc71c5385118
---
 vp10/encoder/dct.c | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/vp10/encoder/dct.c b/vp10/encoder/dct.c
index c61babefd..132a14174 100644
--- a/vp10/encoder/dct.c
+++ b/vp10/encoder/dct.c
@@ -22,7 +22,10 @@
 
 static INLINE void range_check(const tran_low_t *input, const int size,
                                const int bit) {
-#if CONFIG_COEFFICIENT_RANGE_CHECKING
+#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));
@@ -39,7 +42,7 @@ static void fdct4(const tran_low_t *input, tran_low_t *output) {
   tran_low_t step[4];
 
   // stage 0
-  range_check(input, 4, 11);
+  range_check(input, 4, 14);
 
   // stage 1
   output[0] = input[0] + input[3];
@@ -47,7 +50,7 @@ static void fdct4(const tran_low_t *input, tran_low_t *output) {
   output[2] = input[1] - input[2];
   output[3] = input[0] - input[3];
 
-  range_check(output, 4, 12);
+  range_check(output, 4, 15);
 
   // stage 2
   temp = output[0] * cospi_16_64 + output[1] * cospi_16_64;
@@ -59,7 +62,7 @@ static void fdct4(const tran_low_t *input, tran_low_t *output) {
   temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64;
   step[3] = (tran_low_t)fdct_round_shift(temp);
 
-  range_check(step, 4, 13);
+  range_check(step, 4, 16);
 
   // stage 3
   output[0] = step[0];
@@ -67,7 +70,7 @@ static void fdct4(const tran_low_t *input, tran_low_t *output) {
   output[2] = step[1];
   output[3] = step[3];
 
-  range_check(output, 4, 13);
+  range_check(output, 4, 16);
 }
 
 static void fdct8(const tran_low_t *input, tran_low_t *output) {
@@ -75,7 +78,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   tran_low_t step[8];
 
   // stage 0
-  range_check(input, 8, 12);
+  range_check(input, 8, 13);
 
   // stage 1
   output[0] = input[0] + input[7];
@@ -87,7 +90,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   output[6] = input[1] - input[6];
   output[7] = input[0] - input[7];
 
-  range_check(output, 8, 13);
+  range_check(output, 8, 14);
 
   // stage 2
   step[0] = output[0] + output[3];
@@ -101,7 +104,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   step[6] = (tran_low_t)fdct_round_shift(temp);
   step[7] = output[7];
 
-  range_check(step, 8, 14);
+  range_check(step, 8, 15);
 
   // stage 3
   temp = step[0] * cospi_16_64 + step[1] * cospi_16_64;
@@ -117,7 +120,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   output[6] = step[7] - step[6];
   output[7] = step[7] + step[6];
 
-  range_check(output, 8, 14);
+  range_check(output, 8, 16);
 
   // stage 4
   step[0] = output[0];
@@ -133,7 +136,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64;
   step[7] = (tran_low_t)fdct_round_shift(temp);
 
-  range_check(step, 8, 14);
+  range_check(step, 8, 16);
 
   // stage 5
   output[0] = step[0];
@@ -145,7 +148,7 @@ static void fdct8(const tran_low_t *input, tran_low_t *output) {
   output[6] = step[3];
   output[7] = step[7];
 
-  range_check(output, 8, 14);
+  range_check(output, 8, 16);
 }
 
 static void fdct16(const tran_low_t *input, tran_low_t *output) {
@@ -322,7 +325,7 @@ static void fdct16(const tran_low_t *input, tran_low_t *output) {
   range_check(output, 16, 16);
 }
 
-/* #TODO(angiebird): Unify this with vp10_fwd_txfm.c: vp10_fdct32
+/* TODO(angiebird): Unify this with vp10_fwd_txfm.c: vp10_fdct32
 static void fdct32(const tran_low_t *input, tran_low_t *output) {
   tran_high_t temp;
   tran_low_t step[32];