51 lines
1.5 KiB
C
51 lines
1.5 KiB
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 "vpx_dsp/inv_txfm.h"
|
||
|
|
#include "vpx_ports/mem.h"
|
||
|
|
|
||
|
|
void vpx_idct4x4_1_add_neon(
|
||
|
|
int16_t *input,
|
||
|
|
uint8_t *dest,
|
||
|
|
int dest_stride) {
|
||
|
|
uint8x8_t d6u8;
|
||
|
|
uint32x2_t d2u32 = vdup_n_u32(0);
|
||
|
|
uint16x8_t q8u16;
|
||
|
|
int16x8_t q0s16;
|
||
|
|
uint8_t *d1, *d2;
|
||
|
|
int16_t i, a1, cospi_16_64 = 11585;
|
||
|
|
int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
|
||
|
|
out = dct_const_round_shift(out * cospi_16_64);
|
||
|
|
a1 = ROUND_POWER_OF_TWO(out, 4);
|
||
|
|
|
||
|
|
q0s16 = vdupq_n_s16(a1);
|
||
|
|
|
||
|
|
// dc_only_idct_add
|
||
|
|
d1 = d2 = dest;
|
||
|
|
for (i = 0; i < 2; i++) {
|
||
|
|
d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 0);
|
||
|
|
d1 += dest_stride;
|
||
|
|
d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 1);
|
||
|
|
d1 += dest_stride;
|
||
|
|
|
||
|
|
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q0s16),
|
||
|
|
vreinterpret_u8_u32(d2u32));
|
||
|
|
d6u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
|
||
|
|
|
||
|
|
vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 0);
|
||
|
|
d2 += dest_stride;
|
||
|
|
vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 1);
|
||
|
|
d2 += dest_stride;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|