| /* |
| * 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]); |
| } |