diff -r 000000000000 -r 6474c204b198 media/libvpx/vp9/common/vp9_idct.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libvpx/vp9/common/vp9_idct.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,106 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VP9_COMMON_VP9_IDCT_H_
+#define VP9_COMMON_VP9_IDCT_H_
+
+#include <assert.h>
+
+#include "./vpx_config.h"
+#include "vpx/vpx_integer.h"
+#include "vp9/common/vp9_common.h"
+#include "vp9/common/vp9_enums.h"
+
+
+// Constants and Macros used by all idct/dct functions
+#define DCT_CONST_BITS 14
+#define DCT_CONST_ROUNDING  (1 << (DCT_CONST_BITS - 1))
+
+#define UNIT_QUANT_SHIFT 2
+#define UNIT_QUANT_FACTOR (1 << UNIT_QUANT_SHIFT)
+
+#define pair_set_epi16(a, b) \
+  _mm_set_epi16(b, a, b, a, b, a, b, a)
+
+#define pair_set_epi32(a, b) \
+  _mm_set_epi32(b, a, b, a)
+
+// Constants:
+//  for (int i = 1; i< 32; ++i)
+//    printf("static const int cospi_%d_64 = %.0f;\n", i,
+//           round(16384 * cos(i*M_PI/64)));
+// Note: sin(k*Pi/64) = cos((32-k)*Pi/64)
+static const int cospi_1_64  = 16364;
+static const int cospi_2_64  = 16305;
+static const int cospi_3_64  = 16207;
+static const int cospi_4_64  = 16069;
+static const int cospi_5_64  = 15893;
+static const int cospi_6_64  = 15679;
+static const int cospi_7_64  = 15426;
+static const int cospi_8_64  = 15137;
+static const int cospi_9_64  = 14811;
+static const int cospi_10_64 = 14449;
+static const int cospi_11_64 = 14053;
+static const int cospi_12_64 = 13623;
+static const int cospi_13_64 = 13160;
+static const int cospi_14_64 = 12665;
+static const int cospi_15_64 = 12140;
+static const int cospi_16_64 = 11585;
+static const int cospi_17_64 = 11003;
+static const int cospi_18_64 = 10394;
+static const int cospi_19_64 = 9760;
+static const int cospi_20_64 = 9102;
+static const int cospi_21_64 = 8423;
+static const int cospi_22_64 = 7723;
+static const int cospi_23_64 = 7005;
+static const int cospi_24_64 = 6270;
+static const int cospi_25_64 = 5520;
+static const int cospi_26_64 = 4756;
+static const int cospi_27_64 = 3981;
+static const int cospi_28_64 = 3196;
+static const int cospi_29_64 = 2404;
+static const int cospi_30_64 = 1606;
+static const int cospi_31_64 = 804;
+
+//  16384 * sqrt(2) * sin(kPi/9) * 2 / 3
+static const int sinpi_1_9 = 5283;
+static const int sinpi_2_9 = 9929;
+static const int sinpi_3_9 = 13377;
+static const int sinpi_4_9 = 15212;
+
+static INLINE int dct_const_round_shift(int input) {
+  int rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS);
+  return (int16_t)rv;
+}
+
+typedef void (*transform_1d)(const int16_t*, int16_t*);
+
+typedef struct {
+  transform_1d cols, rows;  // vertical and horizontal
+} transform_2d;
+
+void vp9_iwht4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob);
+
+void vp9_idct4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob);
+void vp9_idct8x8_add(const int16_t *input, uint8_t *dest, int stride, int eob);
+void vp9_idct16x16_add(const int16_t *input, uint8_t *dest, int stride, int
+                       eob);
+void vp9_idct32x32_add(const int16_t *input, uint8_t *dest, int stride,
+                       int eob);
+
+void vp9_iht4x4_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
+                    int stride, int eob);
+void vp9_iht8x8_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
+                    int stride, int eob);
+void vp9_iht16x16_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
+                      int stride, int eob);
+
+
+#endif  // VP9_COMMON_VP9_IDCT_H_