43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <arm_neon.h>
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void vp8_dc_only_idct_add_neon(
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int16_t input_dc,
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unsigned char *pred_ptr,
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int pred_stride,
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unsigned char *dst_ptr,
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int dst_stride) {
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int i;
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uint16_t a1 = ((input_dc + 4) >> 3);
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uint32x2_t d2u32 = vdup_n_u32(0);
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uint8x8_t d2u8;
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uint16x8_t q1u16;
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uint16x8_t qAdd;
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qAdd = vdupq_n_u16(a1);
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for (i = 0; i < 2; i++) {
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d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 0);
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pred_ptr += pred_stride;
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d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 1);
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pred_ptr += pred_stride;
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q1u16 = vaddw_u8(qAdd, vreinterpret_u8_u32(d2u32));
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d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16));
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vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 0);
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dst_ptr += dst_stride;
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vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 1);
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dst_ptr += dst_stride;
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}
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}
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