| /* |
| * 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_config.h" |
| #include "./vpx_dsp_rtcd.h" |
| #include "vpx_dsp/arm/idct_neon.h" |
| #include "vpx_dsp/arm/mem_neon.h" |
| #include "vpx_dsp/arm/transpose_neon.h" |
| #include "vpx_dsp/txfm_common.h" |
| |
| void vpx_idct8x8_64_add_neon(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| const int16x8_t cospis = vld1q_s16(kCospi); |
| const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24 |
| const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28 |
| int16x8_t a[8]; |
| |
| a[0] = load_tran_low_to_s16q(input); |
| a[1] = load_tran_low_to_s16q(input + 8); |
| a[2] = load_tran_low_to_s16q(input + 16); |
| a[3] = load_tran_low_to_s16q(input + 24); |
| a[4] = load_tran_low_to_s16q(input + 32); |
| a[5] = load_tran_low_to_s16q(input + 40); |
| a[6] = load_tran_low_to_s16q(input + 48); |
| a[7] = load_tran_low_to_s16q(input + 56); |
| |
| idct8x8_64_1d_bd8(cospis0, cospis1, a); |
| idct8x8_64_1d_bd8(cospis0, cospis1, a); |
| idct8x8_add8x8_neon(a, dest, stride); |
| } |
| |
| void vpx_idct8x8_12_add_neon(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| const int16x8_t cospis = vld1q_s16(kCospi); |
| const int16x8_t cospisd = vaddq_s16(cospis, cospis); |
| const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24 |
| const int16x4_t cospisd0 = vget_low_s16(cospisd); // doubled 0, 8, 16, 24 |
| const int16x4_t cospisd1 = vget_high_s16(cospisd); // doubled 4, 12, 20, 28 |
| int16x4_t a[8]; |
| int16x8_t b[8]; |
| |
| a[0] = load_tran_low_to_s16d(input); |
| a[1] = load_tran_low_to_s16d(input + 8); |
| a[2] = load_tran_low_to_s16d(input + 16); |
| a[3] = load_tran_low_to_s16d(input + 24); |
| |
| idct8x8_12_pass1_bd8(cospis0, cospisd0, cospisd1, a); |
| idct8x8_12_pass2_bd8(cospis0, cospisd0, cospisd1, a, b); |
| idct8x8_add8x8_neon(b, dest, stride); |
| } |