1 /* 2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <arm_neon.h> 12 13 #include "./vp8_rtcd.h" 14 15 void vp8_dc_only_idct_add_neon(int16_t input_dc, unsigned char *pred_ptr, 16 int pred_stride, unsigned char *dst_ptr, 17 int dst_stride) { 18 int i; 19 uint16_t a1 = ((input_dc + 4) >> 3); 20 uint32x2_t d2u32 = vdup_n_u32(0); 21 uint8x8_t d2u8; 22 uint16x8_t q1u16; 23 uint16x8_t qAdd; 24 25 qAdd = vdupq_n_u16(a1); 26 27 for (i = 0; i < 2; ++i) { 28 d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 0); 29 pred_ptr += pred_stride; 30 d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 1); 31 pred_ptr += pred_stride; 32 33 q1u16 = vaddw_u8(qAdd, vreinterpret_u8_u32(d2u32)); 34 d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16)); 35 36 vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 0); 37 dst_ptr += dst_stride; 38 vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 1); 39 dst_ptr += dst_stride; 40 } 41 } 42
