ref: 0310ebd8d1f44eca865f33c063ad4410969d3b94
dir: /vp9/common/arm/neon/vp9_iht4x4_add_neon.c/
/* * Copyright (c) 2014 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include <arm_neon.h> #include <assert.h> #include "./vp9_rtcd.h" #include "./vpx_config.h" #include "vp9/common/vp9_common.h" #include "vp9/common/arm/neon/vp9_iht_neon.h" #include "vpx_dsp/arm/idct_neon.h" #include "vpx_dsp/arm/mem_neon.h" #include "vpx_dsp/txfm_common.h" void vp9_iht4x4_16_add_neon(const tran_low_t *input, uint8_t *dest, int stride, int tx_type) { int16x8_t a[2]; uint8x8_t s[2], d[2]; uint16x8_t sum[2]; assert(!((intptr_t)dest % sizeof(uint32_t))); assert(!(stride % sizeof(uint32_t))); a[0] = load_tran_low_to_s16q(input); a[1] = load_tran_low_to_s16q(input + 8); transpose_s16_4x4q(&a[0], &a[1]); switch (tx_type) { case DCT_DCT: idct4x4_16_kernel_bd8(a); a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1])); transpose_s16_4x4q(&a[0], &a[1]); idct4x4_16_kernel_bd8(a); a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1])); break; case ADST_DCT: idct4x4_16_kernel_bd8(a); a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1])); transpose_s16_4x4q(&a[0], &a[1]); iadst4(a); break; case DCT_ADST: iadst4(a); transpose_s16_4x4q(&a[0], &a[1]); idct4x4_16_kernel_bd8(a); a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1])); break; default: assert(tx_type == ADST_ADST); iadst4(a); transpose_s16_4x4q(&a[0], &a[1]); iadst4(a); break; } a[0] = vrshrq_n_s16(a[0], 4); a[1] = vrshrq_n_s16(a[1], 4); s[0] = load_u8(dest, stride); s[1] = load_u8(dest + 2 * stride, stride); sum[0] = vaddw_u8(vreinterpretq_u16_s16(a[0]), s[0]); sum[1] = vaddw_u8(vreinterpretq_u16_s16(a[1]), s[1]); d[0] = vqmovun_s16(vreinterpretq_s16_u16(sum[0])); d[1] = vqmovun_s16(vreinterpretq_s16_u16(sum[1])); store_u8(dest, stride, d[0]); store_u8(dest + 2 * stride, stride, d[1]); }