libvpx: Pull from upstream

source/libvpx/vp9/common/arm/neon/vp9_idct32x32_neon.c

-/*
- *  Copyright (c) 2013 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 "vp9/common/vp9_common.h"
-
-// defined in vp9/common/arm/neon/vp9_short_idct32x32_add_neon.asm
-extern void idct32_transpose_and_transform(int16_t *transpose_buffer,
-                                           int16_t *output, int16_t *input);
-extern void idct32_combine_add(uint8_t *dest, int16_t *out, int dest_stride);
-
-
-// defined in vp9/common/arm/neon/vp9_short_idct16x16_add_neon.asm
-extern void save_neon_registers();
-extern void restore_neon_registers();
-
-void vp9_short_idct32x32_add_neon(int16_t *input, uint8_t *dest,
-                                  int dest_stride) {
-  // TODO(cd): move the creation of these buffers within the ASM file
-  // internal buffer used to transpose 8 lines into before transforming them
-  int16_t transpose_buffer[32 * 8];
-  // results of the first pass (transpose and transform rows)
-  int16_t pass1[32 * 32];
-  // results of the second pass (transpose and transform columns)
-  int16_t pass2[32 * 32];
-
-  // save register we need to preserve
-  save_neon_registers();
-  // process rows
-  idct32_transpose_and_transform(transpose_buffer, pass1, input);
-  // process columns
-  // TODO(cd): do these two steps/passes within the ASM file
-  idct32_transpose_and_transform(transpose_buffer, pass2, pass1);
-  // combine and add to dest
-  // TODO(cd): integrate this within the last storage step of the second pass
-  idct32_combine_add(dest, pass2, dest_stride);
-  // restore register we need to preserve
-  restore_neon_registers();
-}
-
-// TODO(cd): Eliminate this file altogether when everything is in ASM file