65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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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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#include "vpx_dsp/inv_txfm.h"
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#include "vpx_ports/mem.h"
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void vpx_idct8x8_1_add_neon(
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int16_t *input,
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uint8_t *dest,
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int dest_stride) {
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uint8x8_t d2u8, d3u8, d30u8, d31u8;
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uint64x1_t d2u64, d3u64, d4u64, d5u64;
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uint16x8_t q0u16, q9u16, q10u16, q11u16, q12u16;
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int16x8_t q0s16;
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uint8_t *d1, *d2;
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int16_t i, a1, cospi_16_64 = 11585;
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int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
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out = dct_const_round_shift(out * cospi_16_64);
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a1 = ROUND_POWER_OF_TWO(out, 5);
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q0s16 = vdupq_n_s16(a1);
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q0u16 = vreinterpretq_u16_s16(q0s16);
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d1 = d2 = dest;
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for (i = 0; i < 2; i++) {
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d2u64 = vld1_u64((const uint64_t *)d1);
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d1 += dest_stride;
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d3u64 = vld1_u64((const uint64_t *)d1);
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d1 += dest_stride;
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d4u64 = vld1_u64((const uint64_t *)d1);
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d1 += dest_stride;
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d5u64 = vld1_u64((const uint64_t *)d1);
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d1 += dest_stride;
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q9u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d2u64));
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q10u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d3u64));
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q11u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d4u64));
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q12u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d5u64));
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d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
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d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
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d30u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
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d31u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
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vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
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d2 += dest_stride;
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vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
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d2 += dest_stride;
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vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d30u8));
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d2 += dest_stride;
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vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d31u8));
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d2 += dest_stride;
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}
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return;
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}
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