ref: d566160f32580e5ef8fccbce8dde8495756a0620
dir: /vp9/common/arm/neon/vp9_highbd_iht4x4_add_neon.c/
/* * Copyright (c) 2018 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/highbd_idct_neon.h" #include "vpx_dsp/arm/idct_neon.h" #include "vpx_dsp/arm/mem_neon.h" #include "vpx_dsp/txfm_common.h" static INLINE void highbd_iadst4(int32x4_t *const io) { const int32_t sinpis[4] = { sinpi_1_9, sinpi_2_9, sinpi_3_9, sinpi_4_9 }; const int32x4_t sinpi = vld1q_s32(sinpis); int64x2x2_t s[7], t[4]; int32x4_t s7; s[0].val[0] = vmull_lane_s32(vget_low_s32(io[0]), vget_low_s32(sinpi), 0); s[0].val[1] = vmull_lane_s32(vget_high_s32(io[0]), vget_low_s32(sinpi), 0); s[1].val[0] = vmull_lane_s32(vget_low_s32(io[0]), vget_low_s32(sinpi), 1); s[1].val[1] = vmull_lane_s32(vget_high_s32(io[0]), vget_low_s32(sinpi), 1); s[2].val[0] = vmull_lane_s32(vget_low_s32(io[1]), vget_high_s32(sinpi), 0); s[2].val[1] = vmull_lane_s32(vget_high_s32(io[1]), vget_high_s32(sinpi), 0); s[3].val[0] = vmull_lane_s32(vget_low_s32(io[2]), vget_high_s32(sinpi), 1); s[3].val[1] = vmull_lane_s32(vget_high_s32(io[2]), vget_high_s32(sinpi), 1); s[4].val[0] = vmull_lane_s32(vget_low_s32(io[2]), vget_low_s32(sinpi), 0); s[4].val[1] = vmull_lane_s32(vget_high_s32(io[2]), vget_low_s32(sinpi), 0); s[5].val[0] = vmull_lane_s32(vget_low_s32(io[3]), vget_low_s32(sinpi), 1); s[5].val[1] = vmull_lane_s32(vget_high_s32(io[3]), vget_low_s32(sinpi), 1); s[6].val[0] = vmull_lane_s32(vget_low_s32(io[3]), vget_high_s32(sinpi), 1); s[6].val[1] = vmull_lane_s32(vget_high_s32(io[3]), vget_high_s32(sinpi), 1); s7 = vsubq_s32(io[0], io[2]); s7 = vaddq_s32(s7, io[3]); s[0].val[0] = vaddq_s64(s[0].val[0], s[3].val[0]); s[0].val[1] = vaddq_s64(s[0].val[1], s[3].val[1]); s[0].val[0] = vaddq_s64(s[0].val[0], s[5].val[0]); s[0].val[1] = vaddq_s64(s[0].val[1], s[5].val[1]); s[1].val[0] = vsubq_s64(s[1].val[0], s[4].val[0]); s[1].val[1] = vsubq_s64(s[1].val[1], s[4].val[1]); s[1].val[0] = vsubq_s64(s[1].val[0], s[6].val[0]); s[1].val[1] = vsubq_s64(s[1].val[1], s[6].val[1]); s[3] = s[2]; s[2].val[0] = vmull_lane_s32(vget_low_s32(s7), vget_high_s32(sinpi), 0); s[2].val[1] = vmull_lane_s32(vget_high_s32(s7), vget_high_s32(sinpi), 0); t[0].val[0] = vaddq_s64(s[0].val[0], s[3].val[0]); t[0].val[1] = vaddq_s64(s[0].val[1], s[3].val[1]); t[1].val[0] = vaddq_s64(s[1].val[0], s[3].val[0]); t[1].val[1] = vaddq_s64(s[1].val[1], s[3].val[1]); t[2] = s[2]; t[3].val[0] = vaddq_s64(s[0].val[0], s[1].val[0]); t[3].val[1] = vaddq_s64(s[0].val[1], s[1].val[1]); t[3].val[0] = vsubq_s64(t[3].val[0], s[3].val[0]); t[3].val[1] = vsubq_s64(t[3].val[1], s[3].val[1]); io[0] = vcombine_s32(vrshrn_n_s64(t[0].val[0], DCT_CONST_BITS), vrshrn_n_s64(t[0].val[1], DCT_CONST_BITS)); io[1] = vcombine_s32(vrshrn_n_s64(t[1].val[0], DCT_CONST_BITS), vrshrn_n_s64(t[1].val[1], DCT_CONST_BITS)); io[2] = vcombine_s32(vrshrn_n_s64(t[2].val[0], DCT_CONST_BITS), vrshrn_n_s64(t[2].val[1], DCT_CONST_BITS)); io[3] = vcombine_s32(vrshrn_n_s64(t[3].val[0], DCT_CONST_BITS), vrshrn_n_s64(t[3].val[1], DCT_CONST_BITS)); } void vp9_highbd_iht4x4_16_add_neon(const tran_low_t *input, uint16_t *dest, int stride, int tx_type, int bd) { const int16x8_t max = vdupq_n_s16((1 << bd) - 1); int16x8_t a[2]; int32x4_t c[4]; c[0] = vld1q_s32(input); c[1] = vld1q_s32(input + 4); c[2] = vld1q_s32(input + 8); c[3] = vld1q_s32(input + 12); if (bd == 8) { a[0] = vcombine_s16(vmovn_s32(c[0]), vmovn_s32(c[1])); a[1] = vcombine_s16(vmovn_s32(c[2]), vmovn_s32(c[3])); 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); } else { switch (tx_type) { case DCT_DCT: { const int32x4_t cospis = vld1q_s32(kCospi32); if (bd == 10) { idct4x4_16_kernel_bd10(cospis, c); idct4x4_16_kernel_bd10(cospis, c); } else { idct4x4_16_kernel_bd12(cospis, c); idct4x4_16_kernel_bd12(cospis, c); } break; } case ADST_DCT: { const int32x4_t cospis = vld1q_s32(kCospi32); if (bd == 10) { idct4x4_16_kernel_bd10(cospis, c); } else { idct4x4_16_kernel_bd12(cospis, c); } transpose_s32_4x4(&c[0], &c[1], &c[2], &c[3]); highbd_iadst4(c); break; } case DCT_ADST: { const int32x4_t cospis = vld1q_s32(kCospi32); transpose_s32_4x4(&c[0], &c[1], &c[2], &c[3]); highbd_iadst4(c); if (bd == 10) { idct4x4_16_kernel_bd10(cospis, c); } else { idct4x4_16_kernel_bd12(cospis, c); } break; } default: { assert(tx_type == ADST_ADST); transpose_s32_4x4(&c[0], &c[1], &c[2], &c[3]); highbd_iadst4(c); transpose_s32_4x4(&c[0], &c[1], &c[2], &c[3]); highbd_iadst4(c); break; } } a[0] = vcombine_s16(vqrshrn_n_s32(c[0], 4), vqrshrn_n_s32(c[1], 4)); a[1] = vcombine_s16(vqrshrn_n_s32(c[2], 4), vqrshrn_n_s32(c[3], 4)); } highbd_idct4x4_1_add_kernel1(&dest, stride, a[0], max); highbd_idct4x4_1_add_kernel1(&dest, stride, a[1], max); }