1/*
2 * Copyright (C) 2012 University of Szeged
3 * Copyright (C) 2012 Gabor Rapcsanyi
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef NEONHelpers_h
28#define NEONHelpers_h
29
30#if HAVE(ARM_NEON_INTRINSICS)
31
32#include <arm_neon.h>
33
34namespace blink {
35
36inline float32x4_t loadRGBA8AsFloat(uint32_t* source)
37{
38    uint32x2_t temporary1 = {0, 0};
39    temporary1 = vset_lane_u32(*source, temporary1, 0);
40    uint16x4_t temporary2 = vget_low_u16(vmovl_u8(vreinterpret_u8_u32(temporary1)));
41    return vcvtq_f32_u32(vmovl_u16(temporary2));
42}
43
44inline void storeFloatAsRGBA8(float32x4_t data, uint32_t* destination)
45{
46    uint16x4_t temporary1 = vmovn_u32(vcvtq_u32_f32(data));
47    uint8x8_t temporary2 = vmovn_u16(vcombine_u16(temporary1, temporary1));
48    *destination = vget_lane_u32(vreinterpret_u32_u8(temporary2), 0);
49}
50
51} // namespace blink
52
53#endif // HAVE(ARM_NEON_INTRINSICS)
54
55#endif // NEONHelpers_h
56