ref: 3ae25974fd4abfed344216a28d5af92fb62e3cc6
dir: /vpx_dsp/arm/idct_neon.h/
/*
* Copyright (c) 2016 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.
*/
#ifndef VPX_DSP_ARM_IDCT_NEON_H_
#define VPX_DSP_ARM_IDCT_NEON_H_
#include <arm_neon.h>
#include "./vpx_config.h"
#include "vpx_dsp/vpx_dsp_common.h"
//------------------------------------------------------------------------------
// Helper function used to load tran_low_t into int16, narrowing if necessary.
static INLINE int16x8_t load_tran_low_to_s16(const tran_low_t *buf) {
#if CONFIG_VP9_HIGHBITDEPTH
const int32x4_t v0 = vld1q_s32(buf);
const int32x4_t v1 = vld1q_s32(buf + 4);
const int16x4_t s0 = vmovn_s32(v0);
const int16x4_t s1 = vmovn_s32(v1);
return vcombine_s16(s0, s1);
#else
return vld1q_s16(buf);
#endif
}
#endif // VPX_DSP_ARM_IDCT_NEON_H_