296 lines
8.6 KiB
C
296 lines
8.6 KiB
C
/*
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* Copyright (c) 2010 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 "./vp8_rtcd.h"
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static void idct_dequant_0_2x_neon(int16_t *q, int16_t dq, unsigned char *dst,
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int stride) {
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unsigned char *dst0;
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int i, a0, a1;
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int16x8x2_t q2Add;
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int32x2_t d2s32 = vdup_n_s32(0), d4s32 = vdup_n_s32(0);
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uint8x8_t d2u8, d4u8;
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uint16x8_t q1u16, q2u16;
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a0 = ((q[0] * dq) + 4) >> 3;
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a1 = ((q[16] * dq) + 4) >> 3;
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q[0] = q[16] = 0;
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q2Add.val[0] = vdupq_n_s16((int16_t)a0);
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q2Add.val[1] = vdupq_n_s16((int16_t)a1);
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for (i = 0; i < 2; i++, dst += 4) {
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dst0 = dst;
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d2s32 = vld1_lane_s32((const int32_t *)dst0, d2s32, 0);
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dst0 += stride;
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d2s32 = vld1_lane_s32((const int32_t *)dst0, d2s32, 1);
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dst0 += stride;
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d4s32 = vld1_lane_s32((const int32_t *)dst0, d4s32, 0);
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dst0 += stride;
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d4s32 = vld1_lane_s32((const int32_t *)dst0, d4s32, 1);
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q1u16 = vaddw_u8(vreinterpretq_u16_s16(q2Add.val[i]),
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vreinterpret_u8_s32(d2s32));
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q2u16 = vaddw_u8(vreinterpretq_u16_s16(q2Add.val[i]),
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vreinterpret_u8_s32(d4s32));
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d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16));
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d4u8 = vqmovun_s16(vreinterpretq_s16_u16(q2u16));
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d2s32 = vreinterpret_s32_u8(d2u8);
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d4s32 = vreinterpret_s32_u8(d4u8);
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dst0 = dst;
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vst1_lane_s32((int32_t *)dst0, d2s32, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d2s32, 1);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d4s32, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d4s32, 1);
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}
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}
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static const int16_t cospi8sqrt2minus1 = 20091;
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static const int16_t sinpi8sqrt2 = 17734;
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// because the lowest bit in 0x8a8c is 0, we can pre-shift this
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static void idct_dequant_full_2x_neon(int16_t *q, int16_t *dq,
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unsigned char *dst, int stride) {
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unsigned char *dst0, *dst1;
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int32x2_t d28, d29, d30, d31;
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int16x8_t q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11;
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int16x8_t qEmpty = vdupq_n_s16(0);
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int32x4x2_t q2tmp0, q2tmp1;
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int16x8x2_t q2tmp2, q2tmp3;
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int16x4_t dLow0, dLow1, dHigh0, dHigh1;
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d28 = d29 = d30 = d31 = vdup_n_s32(0);
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// load dq
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q0 = vld1q_s16(dq);
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dq += 8;
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q1 = vld1q_s16(dq);
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// load q
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q2 = vld1q_s16(q);
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vst1q_s16(q, qEmpty);
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q += 8;
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q3 = vld1q_s16(q);
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vst1q_s16(q, qEmpty);
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q += 8;
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q4 = vld1q_s16(q);
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vst1q_s16(q, qEmpty);
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q += 8;
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q5 = vld1q_s16(q);
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vst1q_s16(q, qEmpty);
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// load src from dst
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dst0 = dst;
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dst1 = dst + 4;
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d28 = vld1_lane_s32((const int32_t *)dst0, d28, 0);
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dst0 += stride;
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d28 = vld1_lane_s32((const int32_t *)dst1, d28, 1);
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dst1 += stride;
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d29 = vld1_lane_s32((const int32_t *)dst0, d29, 0);
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dst0 += stride;
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d29 = vld1_lane_s32((const int32_t *)dst1, d29, 1);
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dst1 += stride;
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d30 = vld1_lane_s32((const int32_t *)dst0, d30, 0);
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dst0 += stride;
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d30 = vld1_lane_s32((const int32_t *)dst1, d30, 1);
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dst1 += stride;
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d31 = vld1_lane_s32((const int32_t *)dst0, d31, 0);
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d31 = vld1_lane_s32((const int32_t *)dst1, d31, 1);
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q2 = vmulq_s16(q2, q0);
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q3 = vmulq_s16(q3, q1);
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q4 = vmulq_s16(q4, q0);
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q5 = vmulq_s16(q5, q1);
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// vswp
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dLow0 = vget_low_s16(q2);
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dHigh0 = vget_high_s16(q2);
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dLow1 = vget_low_s16(q4);
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dHigh1 = vget_high_s16(q4);
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q2 = vcombine_s16(dLow0, dLow1);
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q4 = vcombine_s16(dHigh0, dHigh1);
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dLow0 = vget_low_s16(q3);
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dHigh0 = vget_high_s16(q3);
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dLow1 = vget_low_s16(q5);
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dHigh1 = vget_high_s16(q5);
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q3 = vcombine_s16(dLow0, dLow1);
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q5 = vcombine_s16(dHigh0, dHigh1);
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q6 = vqdmulhq_n_s16(q4, sinpi8sqrt2);
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q7 = vqdmulhq_n_s16(q5, sinpi8sqrt2);
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q8 = vqdmulhq_n_s16(q4, cospi8sqrt2minus1);
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q9 = vqdmulhq_n_s16(q5, cospi8sqrt2minus1);
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q10 = vqaddq_s16(q2, q3);
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q11 = vqsubq_s16(q2, q3);
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q8 = vshrq_n_s16(q8, 1);
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q9 = vshrq_n_s16(q9, 1);
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q4 = vqaddq_s16(q4, q8);
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q5 = vqaddq_s16(q5, q9);
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q2 = vqsubq_s16(q6, q5);
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q3 = vqaddq_s16(q7, q4);
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q4 = vqaddq_s16(q10, q3);
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q5 = vqaddq_s16(q11, q2);
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q6 = vqsubq_s16(q11, q2);
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q7 = vqsubq_s16(q10, q3);
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q2tmp0 = vtrnq_s32(vreinterpretq_s32_s16(q4), vreinterpretq_s32_s16(q6));
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q2tmp1 = vtrnq_s32(vreinterpretq_s32_s16(q5), vreinterpretq_s32_s16(q7));
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q2tmp2 = vtrnq_s16(vreinterpretq_s16_s32(q2tmp0.val[0]),
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vreinterpretq_s16_s32(q2tmp1.val[0]));
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q2tmp3 = vtrnq_s16(vreinterpretq_s16_s32(q2tmp0.val[1]),
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vreinterpretq_s16_s32(q2tmp1.val[1]));
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// loop 2
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q8 = vqdmulhq_n_s16(q2tmp2.val[1], sinpi8sqrt2);
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q9 = vqdmulhq_n_s16(q2tmp3.val[1], sinpi8sqrt2);
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q10 = vqdmulhq_n_s16(q2tmp2.val[1], cospi8sqrt2minus1);
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q11 = vqdmulhq_n_s16(q2tmp3.val[1], cospi8sqrt2minus1);
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q2 = vqaddq_s16(q2tmp2.val[0], q2tmp3.val[0]);
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q3 = vqsubq_s16(q2tmp2.val[0], q2tmp3.val[0]);
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q10 = vshrq_n_s16(q10, 1);
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q11 = vshrq_n_s16(q11, 1);
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q10 = vqaddq_s16(q2tmp2.val[1], q10);
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q11 = vqaddq_s16(q2tmp3.val[1], q11);
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q8 = vqsubq_s16(q8, q11);
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q9 = vqaddq_s16(q9, q10);
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q4 = vqaddq_s16(q2, q9);
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q5 = vqaddq_s16(q3, q8);
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q6 = vqsubq_s16(q3, q8);
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q7 = vqsubq_s16(q2, q9);
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q4 = vrshrq_n_s16(q4, 3);
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q5 = vrshrq_n_s16(q5, 3);
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q6 = vrshrq_n_s16(q6, 3);
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q7 = vrshrq_n_s16(q7, 3);
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q2tmp0 = vtrnq_s32(vreinterpretq_s32_s16(q4), vreinterpretq_s32_s16(q6));
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q2tmp1 = vtrnq_s32(vreinterpretq_s32_s16(q5), vreinterpretq_s32_s16(q7));
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q2tmp2 = vtrnq_s16(vreinterpretq_s16_s32(q2tmp0.val[0]),
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vreinterpretq_s16_s32(q2tmp1.val[0]));
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q2tmp3 = vtrnq_s16(vreinterpretq_s16_s32(q2tmp0.val[1]),
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vreinterpretq_s16_s32(q2tmp1.val[1]));
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q4 = vreinterpretq_s16_u16(
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vaddw_u8(vreinterpretq_u16_s16(q2tmp2.val[0]), vreinterpret_u8_s32(d28)));
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q5 = vreinterpretq_s16_u16(
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vaddw_u8(vreinterpretq_u16_s16(q2tmp2.val[1]), vreinterpret_u8_s32(d29)));
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q6 = vreinterpretq_s16_u16(
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vaddw_u8(vreinterpretq_u16_s16(q2tmp3.val[0]), vreinterpret_u8_s32(d30)));
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q7 = vreinterpretq_s16_u16(
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vaddw_u8(vreinterpretq_u16_s16(q2tmp3.val[1]), vreinterpret_u8_s32(d31)));
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d28 = vreinterpret_s32_u8(vqmovun_s16(q4));
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d29 = vreinterpret_s32_u8(vqmovun_s16(q5));
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d30 = vreinterpret_s32_u8(vqmovun_s16(q6));
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d31 = vreinterpret_s32_u8(vqmovun_s16(q7));
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dst0 = dst;
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dst1 = dst + 4;
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vst1_lane_s32((int32_t *)dst0, d28, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst1, d28, 1);
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dst1 += stride;
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vst1_lane_s32((int32_t *)dst0, d29, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst1, d29, 1);
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dst1 += stride;
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vst1_lane_s32((int32_t *)dst0, d30, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst1, d30, 1);
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dst1 += stride;
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vst1_lane_s32((int32_t *)dst0, d31, 0);
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vst1_lane_s32((int32_t *)dst1, d31, 1);
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}
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void vp8_dequant_idct_add_y_block_neon(short *q, short *dq, unsigned char *dst,
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int stride, char *eobs) {
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int i;
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for (i = 0; i < 4; ++i) {
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if (((short *)(eobs))[0]) {
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if (((short *)eobs)[0] & 0xfefe)
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idct_dequant_full_2x_neon(q, dq, dst, stride);
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else
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idct_dequant_0_2x_neon(q, dq[0], dst, stride);
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}
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if (((short *)(eobs))[1]) {
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if (((short *)eobs)[1] & 0xfefe)
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idct_dequant_full_2x_neon(q + 32, dq, dst + 8, stride);
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else
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idct_dequant_0_2x_neon(q + 32, dq[0], dst + 8, stride);
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}
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q += 64;
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dst += 4 * stride;
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eobs += 4;
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}
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}
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void vp8_dequant_idct_add_uv_block_neon(short *q, short *dq,
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unsigned char *dst_u,
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unsigned char *dst_v, int stride,
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char *eobs) {
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if (((short *)(eobs))[0]) {
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if (((short *)eobs)[0] & 0xfefe)
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idct_dequant_full_2x_neon(q, dq, dst_u, stride);
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else
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idct_dequant_0_2x_neon(q, dq[0], dst_u, stride);
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}
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q += 32;
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dst_u += 4 * stride;
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if (((short *)(eobs))[1]) {
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if (((short *)eobs)[1] & 0xfefe)
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idct_dequant_full_2x_neon(q, dq, dst_u, stride);
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else
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idct_dequant_0_2x_neon(q, dq[0], dst_u, stride);
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}
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q += 32;
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if (((short *)(eobs))[2]) {
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if (((short *)eobs)[2] & 0xfefe)
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idct_dequant_full_2x_neon(q, dq, dst_v, stride);
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else
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idct_dequant_0_2x_neon(q, dq[0], dst_v, stride);
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}
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q += 32;
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dst_v += 4 * stride;
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if (((short *)(eobs))[3]) {
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if (((short *)eobs)[3] & 0xfefe)
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idct_dequant_full_2x_neon(q, dq, dst_v, stride);
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else
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idct_dequant_0_2x_neon(q, dq[0], dst_v, stride);
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}
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}
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