
Use scalar multiply. No impact on clang, but improves gcc compiling. BUG=webm:1403 Change-Id: I4922e7e033d9e93282c754754100850e232e1529
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
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* Copyright (c) 2018 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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#ifndef VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_
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#define VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_
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#include <arm_neon.h>
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#include "./vp9_rtcd.h"
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#include "./vpx_config.h"
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#include "vp9/common/vp9_common.h"
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#include "vpx_dsp/arm/idct_neon.h"
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#include "vpx_dsp/arm/mem_neon.h"
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#include "vpx_dsp/txfm_common.h"
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static INLINE void iadst4(int16x8_t *const io) {
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const int32x4_t c3 = vdupq_n_s32(sinpi_3_9);
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int16x4_t x[4];
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int32x4_t s[8], output[4];
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const int16x4_t c =
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create_s16x4_neon(sinpi_1_9, sinpi_2_9, sinpi_3_9, sinpi_4_9);
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x[0] = vget_low_s16(io[0]);
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x[1] = vget_low_s16(io[1]);
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x[2] = vget_high_s16(io[0]);
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x[3] = vget_high_s16(io[1]);
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s[0] = vmull_lane_s16(x[0], c, 0);
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s[1] = vmull_lane_s16(x[0], c, 1);
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s[2] = vmull_lane_s16(x[1], c, 2);
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s[3] = vmull_lane_s16(x[2], c, 3);
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s[4] = vmull_lane_s16(x[2], c, 0);
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s[5] = vmull_lane_s16(x[3], c, 1);
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s[6] = vmull_lane_s16(x[3], c, 3);
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s[7] = vaddl_s16(x[0], x[3]);
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s[7] = vsubw_s16(s[7], x[2]);
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s[0] = vaddq_s32(s[0], s[3]);
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s[0] = vaddq_s32(s[0], s[5]);
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s[1] = vsubq_s32(s[1], s[4]);
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s[1] = vsubq_s32(s[1], s[6]);
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s[3] = s[2];
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s[2] = vmulq_s32(c3, s[7]);
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output[0] = vaddq_s32(s[0], s[3]);
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output[1] = vaddq_s32(s[1], s[3]);
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output[2] = s[2];
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output[3] = vaddq_s32(s[0], s[1]);
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output[3] = vsubq_s32(output[3], s[3]);
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dct_const_round_shift_low_8_dual(output, &io[0], &io[1]);
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}
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#endif // VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_
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