| /* |
| * 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/transpose_neon.h" |
| #include "vpx_dsp/txfm_common.h" |
| |
| static INLINE void add8x8(int16x8_t a0, int16x8_t a1, int16x8_t a2, |
| int16x8_t a3, int16x8_t a4, int16x8_t a5, |
| int16x8_t a6, int16x8_t a7, uint8_t *dest, |
| const int stride) { |
| const uint8_t *dst = dest; |
| uint8x8_t d0, d1, d2, d3, d4, d5, d6, d7; |
| uint16x8_t d0_u16, d1_u16, d2_u16, d3_u16, d4_u16, d5_u16, d6_u16, d7_u16; |
| |
| a0 = vrshrq_n_s16(a0, 5); |
| a1 = vrshrq_n_s16(a1, 5); |
| a2 = vrshrq_n_s16(a2, 5); |
| a3 = vrshrq_n_s16(a3, 5); |
| a4 = vrshrq_n_s16(a4, 5); |
| a5 = vrshrq_n_s16(a5, 5); |
| a6 = vrshrq_n_s16(a6, 5); |
| a7 = vrshrq_n_s16(a7, 5); |
| |
| d0 = vld1_u8(dst); |
| dst += stride; |
| d1 = vld1_u8(dst); |
| dst += stride; |
| d2 = vld1_u8(dst); |
| dst += stride; |
| d3 = vld1_u8(dst); |
| dst += stride; |
| d4 = vld1_u8(dst); |
| dst += stride; |
| d5 = vld1_u8(dst); |
| dst += stride; |
| d6 = vld1_u8(dst); |
| dst += stride; |
| d7 = vld1_u8(dst); |
| |
| d0_u16 = vaddw_u8(vreinterpretq_u16_s16(a0), d0); |
| d1_u16 = vaddw_u8(vreinterpretq_u16_s16(a1), d1); |
| d2_u16 = vaddw_u8(vreinterpretq_u16_s16(a2), d2); |
| d3_u16 = vaddw_u8(vreinterpretq_u16_s16(a3), d3); |
| d4_u16 = vaddw_u8(vreinterpretq_u16_s16(a4), d4); |
| d5_u16 = vaddw_u8(vreinterpretq_u16_s16(a5), d5); |
| d6_u16 = vaddw_u8(vreinterpretq_u16_s16(a6), d6); |
| d7_u16 = vaddw_u8(vreinterpretq_u16_s16(a7), d7); |
| |
| d0 = vqmovun_s16(vreinterpretq_s16_u16(d0_u16)); |
| d1 = vqmovun_s16(vreinterpretq_s16_u16(d1_u16)); |
| d2 = vqmovun_s16(vreinterpretq_s16_u16(d2_u16)); |
| d3 = vqmovun_s16(vreinterpretq_s16_u16(d3_u16)); |
| d4 = vqmovun_s16(vreinterpretq_s16_u16(d4_u16)); |
| d5 = vqmovun_s16(vreinterpretq_s16_u16(d5_u16)); |
| d6 = vqmovun_s16(vreinterpretq_s16_u16(d6_u16)); |
| d7 = vqmovun_s16(vreinterpretq_s16_u16(d7_u16)); |
| |
| vst1_u8(dest, d0); |
| dest += stride; |
| vst1_u8(dest, d1); |
| dest += stride; |
| vst1_u8(dest, d2); |
| dest += stride; |
| vst1_u8(dest, d3); |
| dest += stride; |
| vst1_u8(dest, d4); |
| dest += stride; |
| vst1_u8(dest, d5); |
| dest += stride; |
| vst1_u8(dest, d6); |
| dest += stride; |
| vst1_u8(dest, d7); |
| } |
| |
| 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 a0 = load_tran_low_to_s16q(input); |
| int16x8_t a1 = load_tran_low_to_s16q(input + 8); |
| int16x8_t a2 = load_tran_low_to_s16q(input + 16); |
| int16x8_t a3 = load_tran_low_to_s16q(input + 24); |
| int16x8_t a4 = load_tran_low_to_s16q(input + 32); |
| int16x8_t a5 = load_tran_low_to_s16q(input + 40); |
| int16x8_t a6 = load_tran_low_to_s16q(input + 48); |
| int16x8_t a7 = load_tran_low_to_s16q(input + 56); |
| |
| idct8x8_64_1d_bd8(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7); |
| idct8x8_64_1d_bd8(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7); |
| add8x8(a0, a1, a2, a3, a4, a5, a6, a7, 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 a0, a1, a2, a3, a4, a5, a6, a7; |
| int16x8_t b0, b1, b2, b3, b4, b5, b6, b7; |
| |
| a0 = load_tran_low_to_s16d(input); |
| a1 = load_tran_low_to_s16d(input + 8); |
| a2 = load_tran_low_to_s16d(input + 16); |
| a3 = load_tran_low_to_s16d(input + 24); |
| |
| idct8x8_12_pass1_bd8(cospis0, cospisd0, cospisd1, &a0, &a1, &a2, &a3, &a4, |
| &a5, &a6, &a7); |
| idct8x8_12_pass2_bd8(cospis0, cospisd0, cospisd1, a0, a1, a2, a3, a4, a5, a6, |
| a7, &b0, &b1, &b2, &b3, &b4, &b5, &b6, &b7); |
| add8x8(b0, b1, b2, b3, b4, b5, b6, b7, dest, stride); |
| } |