mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-20 12:28:26 +01:00
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
|
// Copyright 2014 Google Inc. All Rights Reserved.
|
||
|
|
//
|
||
|
|
// Use of this source code is governed by a BSD-style license
|
||
|
|
// that can be found in the COPYING 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.
|
||
|
|
// -----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// NEON common code.
|
||
|
|
|
||
|
|
#ifndef WEBP_DSP_NEON_H_
|
||
|
|
#define WEBP_DSP_NEON_H_
|
||
|
|
|
||
|
|
#include <arm_neon.h>
|
||
|
|
|
||
|
|
static WEBP_INLINE int32x4x4_t Transpose4x4(const int32x4x4_t rows) {
|
||
|
|
uint64x2x2_t row01, row23;
|
||
|
|
|
||
|
|
row01.val[0] = vreinterpretq_u64_s32(rows.val[0]);
|
||
|
|
row01.val[1] = vreinterpretq_u64_s32(rows.val[1]);
|
||
|
|
row23.val[0] = vreinterpretq_u64_s32(rows.val[2]);
|
||
|
|
row23.val[1] = vreinterpretq_u64_s32(rows.val[3]);
|
||
|
|
// Transpose 64-bit values (there's no vswp equivalent)
|
||
|
|
{
|
||
|
|
const uint64x1_t row0h = vget_high_u64(row01.val[0]);
|
||
|
|
const uint64x1_t row2l = vget_low_u64(row23.val[0]);
|
||
|
|
const uint64x1_t row1h = vget_high_u64(row01.val[1]);
|
||
|
|
const uint64x1_t row3l = vget_low_u64(row23.val[1]);
|
||
|
|
row01.val[0] = vcombine_u64(vget_low_u64(row01.val[0]), row2l);
|
||
|
|
row23.val[0] = vcombine_u64(row0h, vget_high_u64(row23.val[0]));
|
||
|
|
row01.val[1] = vcombine_u64(vget_low_u64(row01.val[1]), row3l);
|
||
|
|
row23.val[1] = vcombine_u64(row1h, vget_high_u64(row23.val[1]));
|
||
|
|
}
|
||
|
|
{
|
||
|
|
const int32x4x2_t out01 = vtrnq_s32(vreinterpretq_s32_u64(row01.val[0]),
|
||
|
|
vreinterpretq_s32_u64(row01.val[1]));
|
||
|
|
const int32x4x2_t out23 = vtrnq_s32(vreinterpretq_s32_u64(row23.val[0]),
|
||
|
|
vreinterpretq_s32_u64(row23.val[1]));
|
||
|
|
int32x4x4_t out;
|
||
|
|
out.val[0] = out01.val[0];
|
||
|
|
out.val[1] = out01.val[1];
|
||
|
|
out.val[2] = out23.val[0];
|
||
|
|
out.val[3] = out23.val[1];
|
||
|
|
return out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // WEBP_DSP_NEON_H_
|