| /* |
| * Copyright (c) 2014 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 <arm_neon.h> |
| |
| void vp8_dc_only_idct_add_neon( |
| int16_t input_dc, |
| unsigned char *pred_ptr, |
| int pred_stride, |
| unsigned char *dst_ptr, |
| int dst_stride) { |
| int i; |
| uint16_t a1 = ((input_dc + 4) >> 3); |
| uint32x2_t d2u32 = vdup_n_u32(0); |
| uint8x8_t d2u8; |
| uint16x8_t q1u16; |
| uint16x8_t qAdd; |
| |
| qAdd = vdupq_n_u16(a1); |
| |
| for (i = 0; i < 2; i++) { |
| d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 0); |
| pred_ptr += pred_stride; |
| d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 1); |
| pred_ptr += pred_stride; |
| |
| q1u16 = vaddw_u8(qAdd, vreinterpret_u8_u32(d2u32)); |
| d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16)); |
| |
| vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 0); |
| dst_ptr += dst_stride; |
| vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 1); |
| dst_ptr += dst_stride; |
| } |
| } |