move new neon subpixel function

previously wasn't guarded with ifdef ARMV7, causing a link error with
ARMV6

Change-Id: I0526858be0b5f49b2bf11e9090180b2a6c48926d

vp8/encoder/arm/arm_csystemdependent.c

@@ -18,37 +18,6 @@ extern void (*vp8_yv12_copy_partial_frame_ptr)(YV12_BUFFER_CONFIG *src_ybc, YV12
 extern void vp8_yv12_copy_partial_frame(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc, int Fraction);
 extern void vpxyv12_copy_partial_frame_neon(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc, int Fraction);
 
-extern unsigned int vp8_sub_pixel_variance16x16_neon_func
-(
-    const unsigned char  *src_ptr,
-    int  src_pixels_per_line,
-    int  xoffset,
-    int  yoffset,
-    const unsigned char *dst_ptr,
-    int dst_pixels_per_line,
-    unsigned int *sse
-);
-unsigned int vp8_sub_pixel_variance16x16_neon
-(
-    const unsigned char  *src_ptr,
-    int  src_pixels_per_line,
-    int  xoffset,
-    int  yoffset,
-    const unsigned char *dst_ptr,
-    int dst_pixels_per_line,
-    unsigned int *sse
-)
-{
-  if (xoffset == 4 && yoffset == 0)
-      return vp8_variance_halfpixvar16x16_h_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
-  else if (xoffset == 0 && yoffset == 4)
-      return vp8_variance_halfpixvar16x16_v_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
-  else if (xoffset == 4 && yoffset == 4)
-      return vp8_variance_halfpixvar16x16_hv_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
-  else
-      return vp8_sub_pixel_variance16x16_neon_func(src_ptr, src_pixels_per_line, xoffset, yoffset, dst_ptr, dst_pixels_per_line, sse);
-}
-
 void vp8_arch_arm_encoder_init(VP8_COMP *cpi)
 {
 #if CONFIG_RUNTIME_CPU_DETECT

vp8/encoder/arm/variance_arm.c

+/*
+ *  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.
+ */
+
+#include "vpx_config.h"
+
+#if HAVE_ARMV7
+
+unsigned int vp8_sub_pixel_variance16x16_neon
+(
+    const unsigned char  *src_ptr,
+    int  src_pixels_per_line,
+    int  xoffset,
+    int  yoffset,
+    const unsigned char *dst_ptr,
+    int dst_pixels_per_line,
+    unsigned int *sse
+)
+{
+  if (xoffset == 4 && yoffset == 0)
+    return vp8_variance_halfpixvar16x16_h_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
+  else if (xoffset == 0 && yoffset == 4)
+    return vp8_variance_halfpixvar16x16_v_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
+  else if (xoffset == 4 && yoffset == 4)
+    return vp8_variance_halfpixvar16x16_hv_neon(src_ptr, src_pixels_per_line, dst_ptr, dst_pixels_per_line, sse);
+  else
+    return vp8_sub_pixel_variance16x16_neon_func(src_ptr, src_pixels_per_line, xoffset, yoffset, dst_ptr, dst_pixels_per_line, sse);
+}
+
+#endif

vp8/encoder/arm/variance_arm.h

@@ -30,6 +30,7 @@ extern prototype_subpixvariance(vp8_sub_pixel_variance8x8_neon);
 //extern prototype_subpixvariance(vp8_sub_pixel_variance8x16_c);
 //extern prototype_subpixvariance(vp8_sub_pixel_variance16x8_c);
 extern prototype_subpixvariance(vp8_sub_pixel_variance16x16_neon);
+extern prototype_subpixvariance(vp8_sub_pixel_variance16x16_neon_func);
 extern prototype_variance(vp8_variance_halfpixvar16x16_h_neon);
 extern prototype_variance(vp8_variance_halfpixvar16x16_v_neon);
 extern prototype_variance(vp8_variance_halfpixvar16x16_hv_neon);

vp8/vp8cx_arm.mk

@@ -16,6 +16,7 @@
 VP8_CX_SRCS-$(ARCH_ARM)  += encoder/arm/arm_csystemdependent.c
 
 VP8_CX_SRCS-$(HAVE_ARMV7)  += encoder/arm/encodemb_arm.c
+VP8_CX_SRCS-$(HAVE_ARMV7)  += encoder/arm/variance_arm.c
 VP8_CX_SRCS-$(HAVE_ARMV7)  += encoder/arm/quantize_arm.c
 VP8_CX_SRCS-$(HAVE_ARMV7)  += encoder/arm/picklpf_arm.c
 VP8_CX_SRCS-$(HAVE_ARMV5TE) += encoder/arm/boolhuff_arm.c