Revert "Add an MMX fwht4x4"

Includes changes that are not compatible with VS windows builds.
Amongst other things stdint.h is not supported in VS.

This reverts commit 89fbf3de.

Change-Id: Ifa86d7df250578d1ada9b539c9ff12ed0c523cdd

test/fdct4x4_test.cc

@@ -353,13 +353,6 @@ INSTANTIATE_TEST_CASE_P(
         make_tuple(&vp9_fht4x4_c, &vp9_iht4x4_16_add_neon, 3)));
 #endif
 
-#if HAVE_MMX
-INSTANTIATE_TEST_CASE_P(
-    MMX, Trans4x4WHT,
-    ::testing::Values(
-        make_tuple(&vp9_fwht4x4_mmx, &vp9_iwht4x4_16_add_c, 0)));
-#endif
-
 #if HAVE_SSE2
 INSTANTIATE_TEST_CASE_P(
     SSE2, Trans4x4DCT,

vp9/common/vp9_rtcd_defs.pl

@@ -693,7 +693,7 @@ add_proto qw/void vp9_fht16x16/, "const int16_t *input, int16_t *output, int str
 specialize qw/vp9_fht16x16 sse2 avx2/;
 
 add_proto qw/void vp9_fwht4x4/, "const int16_t *input, int16_t *output, int stride";
-specialize qw/vp9_fwht4x4 mmx/;
+specialize qw/vp9_fwht4x4/;
 
 add_proto qw/void vp9_fdct4x4/, "const int16_t *input, int16_t *output, int stride";
 specialize qw/vp9_fdct4x4 sse2 avx2/;

vp9/encoder/x86/vp9_dct_mmx.c

-/*
- *  Copyright (c) 2014 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.
- */
-
-#include <mmintrin.h>
-#include <stdint.h>
-
-#include "./vpx_config.h"
-
-static void INLINE transpose_4x4_mmx(__m64* a, __m64* b, __m64* c, __m64* d) {
-  __m64 w, x, y, z;
-  w = _mm_unpacklo_pi16(*a, *b);
-  x = _mm_unpackhi_pi16(*a, *b);
-  y = _mm_unpacklo_pi16(*c, *d);
-  z = _mm_unpackhi_pi16(*c, *d);
-  *a = _mm_unpacklo_pi32(w, y);
-  *b = _mm_unpackhi_pi32(w, y);
-  *c = _mm_unpacklo_pi32(x, z);
-  *d = _mm_unpackhi_pi32(x, z);
-}
-
-static void INLINE fwht_4x4_cols(__m64* out0,
-                                 __m64* out1,
-                                 __m64* out2,
-                                 __m64* out3,
-                                 __m64 a1,
-                                 __m64 b1,
-                                 __m64 c1,
-                                 __m64 d1) {
-  __m64 e1;
-
-  a1 = _mm_add_pi16(a1, b1);
-  d1 = _mm_sub_pi16(d1, c1);
-  e1 = _mm_sub_pi16(a1, d1);
-  e1 = _mm_srai_pi16(e1, 1);
-  b1 = _mm_sub_pi16(e1, b1);
-  c1 = _mm_sub_pi16(e1, c1);
-  a1 = _mm_sub_pi16(a1, c1);
-  d1 = _mm_add_pi16(d1, b1);
-  *out0 = a1;
-  *out1 = c1;
-  *out2 = d1;
-  *out3 = b1;
-}
-
-void vp9_fwht4x4_mmx(const int16_t* input, int16_t* output, int stride) {
-  __m64 a1 = *(const __m64*)input;
-  __m64 b1 = *(const __m64*)(input + stride);
-  __m64 c1 = *(const __m64*)(input + 2 * stride);
-  __m64 d1 = *(const __m64*)(input + 3 * stride);
-
-  fwht_4x4_cols(&a1, &b1, &c1, &d1, a1, b1, c1, d1);
-  transpose_4x4_mmx(&a1, &b1, &c1, &d1);
-  fwht_4x4_cols(&a1, &b1, &c1, &d1, a1, b1, c1, d1);
-  transpose_4x4_mmx(&a1, &b1, &c1, &d1);
-
-  *(__m64*)output = _mm_slli_pi16(a1, 2);
-  *(__m64*)(output + 4) = _mm_slli_pi16(b1, 2);
-  *(__m64*)(output + 8) = _mm_slli_pi16(c1, 2);
-  *(__m64*)(output + 12) = _mm_slli_pi16(d1, 2);
-}

vp9/vp9cx.mk

@@ -92,7 +92,6 @@ VP9_CX_SRCS-yes += encoder/vp9_mbgraph.h
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_mmx.c
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_impl_mmx.asm
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_sad_mmx.asm
-VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_dct_mmx.c
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_variance_impl_sse2.asm
 VP9_CX_SRCS-$(HAVE_AVX2) += encoder/x86/vp9_variance_impl_intrin_avx2.c
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_sad4d_sse2.asm