89 lines
3.6 KiB
C
89 lines
3.6 KiB
C
/*
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* Copyright (c) 2017 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_rtcd.h"
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#include "vpx_dsp/arm/idct_neon.h"
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#include "vpx_dsp/inv_txfm.h"
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static INLINE void highbd_idct32x32_1_add_pos_kernel(uint16_t **dest,
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const int stride,
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const int16x8_t res,
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const int16x8_t max) {
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const uint16x8_t a0 = vld1q_u16(*dest);
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const uint16x8_t a1 = vld1q_u16(*dest + 8);
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const uint16x8_t a2 = vld1q_u16(*dest + 16);
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const uint16x8_t a3 = vld1q_u16(*dest + 24);
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const int16x8_t b0 = vaddq_s16(res, vreinterpretq_s16_u16(a0));
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const int16x8_t b1 = vaddq_s16(res, vreinterpretq_s16_u16(a1));
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const int16x8_t b2 = vaddq_s16(res, vreinterpretq_s16_u16(a2));
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const int16x8_t b3 = vaddq_s16(res, vreinterpretq_s16_u16(a3));
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const int16x8_t c0 = vminq_s16(b0, max);
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const int16x8_t c1 = vminq_s16(b1, max);
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const int16x8_t c2 = vminq_s16(b2, max);
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const int16x8_t c3 = vminq_s16(b3, max);
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vst1q_u16(*dest, vreinterpretq_u16_s16(c0));
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vst1q_u16(*dest + 8, vreinterpretq_u16_s16(c1));
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vst1q_u16(*dest + 16, vreinterpretq_u16_s16(c2));
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vst1q_u16(*dest + 24, vreinterpretq_u16_s16(c3));
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*dest += stride;
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}
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static INLINE void highbd_idct32x32_1_add_neg_kernel(uint16_t **dest,
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const int stride,
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const int16x8_t res) {
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const uint16x8_t a0 = vld1q_u16(*dest);
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const uint16x8_t a1 = vld1q_u16(*dest + 8);
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const uint16x8_t a2 = vld1q_u16(*dest + 16);
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const uint16x8_t a3 = vld1q_u16(*dest + 24);
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const int16x8_t b0 = vaddq_s16(res, vreinterpretq_s16_u16(a0));
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const int16x8_t b1 = vaddq_s16(res, vreinterpretq_s16_u16(a1));
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const int16x8_t b2 = vaddq_s16(res, vreinterpretq_s16_u16(a2));
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const int16x8_t b3 = vaddq_s16(res, vreinterpretq_s16_u16(a3));
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const uint16x8_t c0 = vqshluq_n_s16(b0, 0);
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const uint16x8_t c1 = vqshluq_n_s16(b1, 0);
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const uint16x8_t c2 = vqshluq_n_s16(b2, 0);
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const uint16x8_t c3 = vqshluq_n_s16(b3, 0);
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vst1q_u16(*dest, c0);
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vst1q_u16(*dest + 8, c1);
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vst1q_u16(*dest + 16, c2);
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vst1q_u16(*dest + 24, c3);
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*dest += stride;
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}
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void vpx_highbd_idct32x32_1_add_neon(const tran_low_t *input, uint16_t *dest,
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int stride, int bd) {
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const tran_low_t out0 =
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HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd);
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const tran_low_t out1 =
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HIGHBD_WRAPLOW(dct_const_round_shift(out0 * cospi_16_64), bd);
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const int16_t a1 = ROUND_POWER_OF_TWO(out1, 6);
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const int16x8_t dc = vdupq_n_s16(a1);
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int i;
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if (a1 >= 0) {
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const int16x8_t max = vdupq_n_s16((1 << bd) - 1);
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for (i = 0; i < 8; ++i) {
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highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
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highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
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highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
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highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
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}
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} else {
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for (i = 0; i < 8; ++i) {
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highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
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highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
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highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
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highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
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}
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}
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}
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