/* * Copyright 2023 The LibYuv 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. */ /* * Copyright (c) 2023 SiFive, Inc. All rights reserved. * * Contributed by Darren Hsieh <[email protected]> * Contributed by Bruce Lai <[email protected]> */ #include "libyuv/row.h" #include "libyuv/scale_row.h" // This module is for clang rvv. GCC hasn't supported segment load & store. #if !defined(LIBYUV_DISABLE_RVV) && defined(__riscv_vector) && \ defined(__clang__) #include <assert.h> #include <riscv_vector.h> #ifdef __cplusplus namespace libyuv { extern "C" { #endif #ifdef HAS_SCALEADDROW_RVV void ScaleAddRow_RVV(const uint8_t* src_ptr, uint16_t* dst_ptr, int src_width) { size_t w = (size_t)src_width; do { size_t vl = __riscv_vsetvl_e8m4(w); vuint8m4_t v_src = __riscv_vle8_v_u8m4(src_ptr, vl); vuint16m8_t v_dst = __riscv_vle16_v_u16m8(dst_ptr, vl); // Use widening multiply-add instead of widening + add v_dst = __riscv_vwmaccu_vx_u16m8(v_dst, 1, v_src, vl); __riscv_vse16_v_u16m8(dst_ptr, v_dst, vl); w -= vl; src_ptr += vl; dst_ptr += vl; } while (w > 0); } #endif #ifdef HAS_SCALEARGBROWDOWN2_RVV void ScaleARGBRowDown2_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { (void)src_stride; size_t w = (size_t)dst_width; const uint64_t* src = (const uint64_t*)(src_argb); uint32_t* dst = (uint32_t*)(dst_argb); do { size_t vl = __riscv_vsetvl_e64m8(w); vuint64m8_t v_data = __riscv_vle64_v_u64m8(src, vl); vuint32m4_t v_dst = __riscv_vnsrl_wx_u32m4(v_data, 32, vl); __riscv_vse32_v_u32m4(dst, v_dst, vl); w -= vl; src += vl; dst += vl; } while (w > 0); } #endif #ifdef HAS_SCALEARGBROWDOWN2LINEAR_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleARGBRowDown2Linear_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { (void)src_stride; size_t w = (size_t)dst_width; const uint32_t* src = (const uint32_t*)(src_argb); do { size_t vl = __riscv_vsetvl_e32m4(w); vuint32m4x2_t v_src = __riscv_vlseg2e32_v_u32m4x2(src, vl); vuint32m4_t v_even_32 = __riscv_vget_v_u32m4x2_u32m4(v_src, 0); vuint32m4_t v_odd_32 = __riscv_vget_v_u32m4x2_u32m4(v_src, 1); vuint8m4_t v_even = __riscv_vreinterpret_v_u32m4_u8m4(v_even_32); vuint8m4_t v_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_odd_32); vuint8m4_t v_dst = __riscv_vaaddu_vv_u8m4(v_even, v_odd, __RISCV_VXRM_RNU, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src += vl * 2; dst_argb += vl * 4; } while (w > 0); } #else void ScaleARGBRowDown2Linear_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { (void)src_stride; size_t w = (size_t)dst_width; const uint32_t* src = (const uint32_t*)(src_argb); // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m4_t v_odd, v_even, v_dst; vuint32m4_t v_odd_32, v_even_32; size_t vl = __riscv_vsetvl_e32m4(w); __riscv_vlseg2e32_v_u32m4(&v_even_32, &v_odd_32, src, vl); v_even = __riscv_vreinterpret_v_u32m4_u8m4(v_even_32); v_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_odd_32); // Use round-to-nearest-up mode for averaging add v_dst = __riscv_vaaddu_vv_u8m4(v_even, v_odd, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src += vl * 2; dst_argb += vl * 4; } while (w > 0); } #endif #endif #ifdef HAS_SCALEARGBROWDOWN2BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleARGBRowDown2Box_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src0 = (const uint32_t*)(src_argb); const uint32_t* src1 = (const uint32_t*)(src_argb + src_stride); do { size_t vl = __riscv_vsetvl_e32m4(w); vuint32m4x2_t v_src0 = __riscv_vlseg2e32_v_u32m4x2(src0, vl); vuint32m4x2_t v_src1 = __riscv_vlseg2e32_v_u32m4x2(src1, vl); vuint32m4_t v_row0_even_32 = __riscv_vget_v_u32m4x2_u32m4(v_src0, 0); vuint32m4_t v_row0_odd_32 = __riscv_vget_v_u32m4x2_u32m4(v_src0, 1); vuint32m4_t v_row1_even_32 = __riscv_vget_v_u32m4x2_u32m4(v_src1, 0); vuint32m4_t v_row1_odd_32 = __riscv_vget_v_u32m4x2_u32m4(v_src1, 1); vuint8m4_t v_row0_even = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_even_32); vuint8m4_t v_row0_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_odd_32); vuint8m4_t v_row1_even = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_even_32); vuint8m4_t v_row1_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_odd_32); vuint16m8_t v_row0_sum = __riscv_vwaddu_vv_u16m8(v_row0_even, v_row0_odd, vl * 4); vuint16m8_t v_row1_sum = __riscv_vwaddu_vv_u16m8(v_row1_even, v_row1_odd, vl * 4); vuint16m8_t v_dst_16 = __riscv_vadd_vv_u16m8(v_row0_sum, v_row1_sum, vl * 4); vuint8m4_t v_dst = __riscv_vnclipu_wx_u8m4(v_dst_16, 2, __RISCV_VXRM_RNU, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src0 += vl * 2; src1 += vl * 2; dst_argb += vl * 4; } while (w > 0); } #else void ScaleARGBRowDown2Box_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src0 = (const uint32_t*)(src_argb); const uint32_t* src1 = (const uint32_t*)(src_argb + src_stride); // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m4_t v_row0_odd, v_row0_even, v_row1_odd, v_row1_even, v_dst; vuint16m8_t v_row0_sum, v_row1_sum, v_dst_16; vuint32m4_t v_row0_odd_32, v_row0_even_32, v_row1_odd_32, v_row1_even_32; size_t vl = __riscv_vsetvl_e32m4(w); __riscv_vlseg2e32_v_u32m4(&v_row0_even_32, &v_row0_odd_32, src0, vl); __riscv_vlseg2e32_v_u32m4(&v_row1_even_32, &v_row1_odd_32, src1, vl); v_row0_even = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_even_32); v_row0_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_odd_32); v_row1_even = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_even_32); v_row1_odd = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_odd_32); v_row0_sum = __riscv_vwaddu_vv_u16m8(v_row0_even, v_row0_odd, vl * 4); v_row1_sum = __riscv_vwaddu_vv_u16m8(v_row1_even, v_row1_odd, vl * 4); v_dst_16 = __riscv_vadd_vv_u16m8(v_row0_sum, v_row1_sum, vl * 4); // Use round-to-nearest-up mode for vnclip v_dst = __riscv_vnclipu_wx_u8m4(v_dst_16, 2, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src0 += vl * 2; src1 += vl * 2; dst_argb += vl * 4; } while (w > 0); } #endif #endif #ifdef HAS_SCALEARGBROWDOWNEVEN_RVV void ScaleARGBRowDownEven_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, int src_stepx, uint8_t* dst_argb, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src = (const uint32_t*)(src_argb); uint32_t* dst = (uint32_t*)(dst_argb); const int stride_byte = src_stepx * 4; do { size_t vl = __riscv_vsetvl_e32m8(w); vuint32m8_t v_row = __riscv_vlse32_v_u32m8(src, stride_byte, vl); __riscv_vse32_v_u32m8(dst, v_row, vl); w -= vl; src += vl * src_stepx; dst += vl; } while (w > 0); } #endif #ifdef HAS_SCALEARGBROWDOWNEVENBOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleARGBRowDownEvenBox_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, int src_stepx, uint8_t* dst_argb, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src0 = (const uint32_t*)(src_argb); const uint32_t* src1 = (const uint32_t*)(src_argb + src_stride); const int stride_byte = src_stepx * 4; do { size_t vl = __riscv_vsetvl_e32m4(w); vuint32m4x2_t v_src0 = __riscv_vlsseg2e32_v_u32m4x2(src0, stride_byte, vl); vuint32m4x2_t v_src1 = __riscv_vlsseg2e32_v_u32m4x2(src1, stride_byte, vl); vuint32m4_t v_row0_low_32 = __riscv_vget_v_u32m4x2_u32m4(v_src0, 0); vuint32m4_t v_row0_high_32 = __riscv_vget_v_u32m4x2_u32m4(v_src0, 1); vuint32m4_t v_row1_low_32 = __riscv_vget_v_u32m4x2_u32m4(v_src1, 0); vuint32m4_t v_row1_high_32 = __riscv_vget_v_u32m4x2_u32m4(v_src1, 1); vuint8m4_t v_row0_low = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_low_32); vuint8m4_t v_row0_high = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_high_32); vuint8m4_t v_row1_low = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_low_32); vuint8m4_t v_row1_high = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_high_32); vuint16m8_t v_row0_sum = __riscv_vwaddu_vv_u16m8(v_row0_low, v_row0_high, vl * 4); vuint16m8_t v_row1_sum = __riscv_vwaddu_vv_u16m8(v_row1_low, v_row1_high, vl * 4); vuint16m8_t v_sum = __riscv_vadd_vv_u16m8(v_row0_sum, v_row1_sum, vl * 4); vuint8m4_t v_dst = __riscv_vnclipu_wx_u8m4(v_sum, 2, __RISCV_VXRM_RNU, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src0 += vl * src_stepx; src1 += vl * src_stepx; dst_argb += vl * 4; } while (w > 0); } #else void ScaleARGBRowDownEvenBox_RVV(const uint8_t* src_argb, ptrdiff_t src_stride, int src_stepx, uint8_t* dst_argb, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src0 = (const uint32_t*)(src_argb); const uint32_t* src1 = (const uint32_t*)(src_argb + src_stride); const int stride_byte = src_stepx * 4; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m4_t v_row0_low, v_row0_high, v_row1_low, v_row1_high, v_dst; vuint16m8_t v_row0_sum, v_row1_sum, v_sum; vuint32m4_t v_row0_low_32, v_row0_high_32, v_row1_low_32, v_row1_high_32; size_t vl = __riscv_vsetvl_e32m4(w); __riscv_vlsseg2e32_v_u32m4(&v_row0_low_32, &v_row0_high_32, src0, stride_byte, vl); __riscv_vlsseg2e32_v_u32m4(&v_row1_low_32, &v_row1_high_32, src1, stride_byte, vl); v_row0_low = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_low_32); v_row0_high = __riscv_vreinterpret_v_u32m4_u8m4(v_row0_high_32); v_row1_low = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_low_32); v_row1_high = __riscv_vreinterpret_v_u32m4_u8m4(v_row1_high_32); v_row0_sum = __riscv_vwaddu_vv_u16m8(v_row0_low, v_row0_high, vl * 4); v_row1_sum = __riscv_vwaddu_vv_u16m8(v_row1_low, v_row1_high, vl * 4); v_sum = __riscv_vadd_vv_u16m8(v_row0_sum, v_row1_sum, vl * 4); // Use round-to-nearest-up mode for vnclip v_dst = __riscv_vnclipu_wx_u8m4(v_sum, 2, vl * 4); __riscv_vse8_v_u8m4(dst_argb, v_dst, vl * 4); w -= vl; src0 += vl * src_stepx; src1 += vl * src_stepx; dst_argb += vl * 4; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN2_RVV void ScaleRowDown2_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { size_t w = (size_t)dst_width; const uint16_t* src = (const uint16_t*)src_ptr; (void)src_stride; do { size_t vl = __riscv_vsetvl_e16m8(w); vuint16m8_t v_src = __riscv_vle16_v_u16m8(src, vl); vuint8m4_t v_dst = __riscv_vnsrl_wx_u8m4(v_src, 8, vl); __riscv_vse8_v_u8m4(dst, v_dst, vl); w -= vl; src += vl; dst += vl; } while (w > 0); } #endif #ifdef HAS_SCALEROWDOWN2LINEAR_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleRowDown2Linear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { size_t w = (size_t)dst_width; (void)src_stride; do { size_t vl = __riscv_vsetvl_e8m4(w); vuint8m4x2_t v_src = __riscv_vlseg2e8_v_u8m4x2(src_ptr, vl); vuint8m4_t v_s0 = __riscv_vget_v_u8m4x2_u8m4(v_src, 0); vuint8m4_t v_s1 = __riscv_vget_v_u8m4x2_u8m4(v_src, 1); vuint8m4_t v_dst = __riscv_vaaddu_vv_u8m4(v_s0, v_s1, __RISCV_VXRM_RNU, vl); __riscv_vse8_v_u8m4(dst, v_dst, vl); w -= vl; src_ptr += 2 * vl; dst += vl; } while (w > 0); } #else void ScaleRowDown2Linear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { size_t w = (size_t)dst_width; (void)src_stride; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m4_t v_s0, v_s1, v_dst; size_t vl = __riscv_vsetvl_e8m4(w); __riscv_vlseg2e8_v_u8m4(&v_s0, &v_s1, src_ptr, vl); // Use round-to-nearest-up mode for averaging add v_dst = __riscv_vaaddu_vv_u8m4(v_s0, v_s1, vl); __riscv_vse8_v_u8m4(dst, v_dst, vl); w -= vl; src_ptr += 2 * vl; dst += vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN2BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleRowDown2Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; size_t w = (size_t)dst_width; do { size_t vl = __riscv_vsetvl_e8m4(w); vuint8m4x2_t v_s = __riscv_vlseg2e8_v_u8m4x2(s, vl); vuint8m4x2_t v_t = __riscv_vlseg2e8_v_u8m4x2(t, vl); vuint8m4_t v_s0 = __riscv_vget_v_u8m4x2_u8m4(v_s, 0); vuint8m4_t v_s1 = __riscv_vget_v_u8m4x2_u8m4(v_s, 1); vuint8m4_t v_t0 = __riscv_vget_v_u8m4x2_u8m4(v_t, 0); vuint8m4_t v_t1 = __riscv_vget_v_u8m4x2_u8m4(v_t, 1); vuint16m8_t v_s01 = __riscv_vwaddu_vv_u16m8(v_s0, v_s1, vl); vuint16m8_t v_t01 = __riscv_vwaddu_vv_u16m8(v_t0, v_t1, vl); vuint16m8_t v_st01 = __riscv_vadd_vv_u16m8(v_s01, v_t01, vl); // Use round-to-nearest-up mode for vnclip vuint8m4_t v_dst = __riscv_vnclipu_wx_u8m4(v_st01, 2, __RISCV_VXRM_RNU, vl); __riscv_vse8_v_u8m4(dst, v_dst, vl); w -= vl; s += 2 * vl; t += 2 * vl; dst += vl; } while (w > 0); } #else void ScaleRowDown2Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; size_t w = (size_t)dst_width; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { size_t vl = __riscv_vsetvl_e8m4(w); vuint8m4_t v_s0, v_s1, v_t0, v_t1; vuint16m8_t v_s01, v_t01, v_st01; vuint8m4_t v_dst; __riscv_vlseg2e8_v_u8m4(&v_s0, &v_s1, s, vl); __riscv_vlseg2e8_v_u8m4(&v_t0, &v_t1, t, vl); v_s01 = __riscv_vwaddu_vv_u16m8(v_s0, v_s1, vl); v_t01 = __riscv_vwaddu_vv_u16m8(v_t0, v_t1, vl); v_st01 = __riscv_vadd_vv_u16m8(v_s01, v_t01, vl); // Use round-to-nearest-up mode for vnclip v_dst = __riscv_vnclipu_wx_u8m4(v_st01, 2, vl); __riscv_vse8_v_u8m4(dst, v_dst, vl); w -= vl; s += 2 * vl; t += 2 * vl; dst += vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN4_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowDown4_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width; (void)src_stride; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_s = __riscv_vlseg4e8_v_u8m2x4(src_ptr, vl); vuint8m2_t v_s2 = __riscv_vget_v_u8m2x4_u8m2(v_s, 2); __riscv_vse8_v_u8m2(dst_ptr, v_s2, vl); w -= vl; src_ptr += (4 * vl); dst_ptr += vl; } while (w > 0); } #else void ScaleRowDown4_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width; (void)src_stride; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2_t v_s0, v_s1, v_s2, v_s3; __riscv_vlseg4e8_v_u8m2(&v_s0, &v_s1, &v_s2, &v_s3, src_ptr, vl); __riscv_vse8_v_u8m2(dst_ptr, v_s2, vl); w -= vl; src_ptr += (4 * vl); dst_ptr += vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN4BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleRowDown4Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { const uint8_t* src_ptr1 = src_ptr + src_stride; const uint8_t* src_ptr2 = src_ptr + src_stride * 2; const uint8_t* src_ptr3 = src_ptr + src_stride * 3; size_t w = (size_t)dst_width; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_s = __riscv_vlseg4e8_v_u8m2x4(src_ptr, vl); vuint8m2_t v_s0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 0); vuint8m2_t v_s1 = __riscv_vget_v_u8m2x4_u8m2(v_s, 1); vuint8m2_t v_s2 = __riscv_vget_v_u8m2x4_u8m2(v_s, 2); vuint8m2_t v_s3 = __riscv_vget_v_u8m2x4_u8m2(v_s, 3); vuint16m4_t v_s01 = __riscv_vwaddu_vv_u16m4(v_s0, v_s1, vl); vuint8m2x4_t v_t = __riscv_vlseg4e8_v_u8m2x4(src_ptr1, vl); vuint8m2_t v_t0 = __riscv_vget_v_u8m2x4_u8m2(v_t, 0); vuint8m2_t v_t1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 1); vuint8m2_t v_t2 = __riscv_vget_v_u8m2x4_u8m2(v_t, 2); vuint8m2_t v_t3 = __riscv_vget_v_u8m2x4_u8m2(v_t, 3); vuint16m4_t v_t01 = __riscv_vwaddu_vv_u16m4(v_t0, v_t1, vl); vuint8m2x4_t v_u = __riscv_vlseg4e8_v_u8m2x4(src_ptr2, vl); vuint8m2_t v_u0 = __riscv_vget_v_u8m2x4_u8m2(v_u, 0); vuint8m2_t v_u1 = __riscv_vget_v_u8m2x4_u8m2(v_u, 1); vuint8m2_t v_u2 = __riscv_vget_v_u8m2x4_u8m2(v_u, 2); vuint8m2_t v_u3 = __riscv_vget_v_u8m2x4_u8m2(v_u, 3); vuint16m4_t v_u01 = __riscv_vwaddu_vv_u16m4(v_u0, v_u1, vl); vuint16m4_t v_u23 = __riscv_vwaddu_vv_u16m4(v_u2, v_u3, vl); vuint16m4_t v_s23 = __riscv_vwaddu_vv_u16m4(v_s2, v_s3, vl); vuint16m4_t v_t23 = __riscv_vwaddu_vv_u16m4(v_t2, v_t3, vl); vuint16m4_t v_st01 = __riscv_vadd_vv_u16m4(v_s01, v_t01, vl); vuint16m4_t v_st23 = __riscv_vadd_vv_u16m4(v_s23, v_t23, vl); vuint8m2x4_t v_v = __riscv_vlseg4e8_v_u8m2x4(src_ptr3, vl); vuint8m2_t v_v0 = __riscv_vget_v_u8m2x4_u8m2(v_v, 0); vuint8m2_t v_v1 = __riscv_vget_v_u8m2x4_u8m2(v_v, 1); vuint8m2_t v_v2 = __riscv_vget_v_u8m2x4_u8m2(v_v, 2); vuint8m2_t v_v3 = __riscv_vget_v_u8m2x4_u8m2(v_v, 3); vuint16m4_t v_v01 = __riscv_vwaddu_vv_u16m4(v_v0, v_v1, vl); vuint16m4_t v_v23 = __riscv_vwaddu_vv_u16m4(v_v2, v_v3, vl); vuint16m4_t v_uv01 = __riscv_vadd_vv_u16m4(v_u01, v_v01, vl); vuint16m4_t v_uv23 = __riscv_vadd_vv_u16m4(v_u23, v_v23, vl); vuint16m4_t v_st0123 = __riscv_vadd_vv_u16m4(v_st01, v_st23, vl); vuint16m4_t v_uv0123 = __riscv_vadd_vv_u16m4(v_uv01, v_uv23, vl); vuint16m4_t v_stuv0123 = __riscv_vadd_vv_u16m4(v_st0123, v_uv0123, vl); vuint8m2_t v_dst = __riscv_vnclipu_wx_u8m2(v_stuv0123, 4, __RISCV_VXRM_RNU, vl); __riscv_vse8_v_u8m2(dst_ptr, v_dst, vl); w -= vl; src_ptr += 4 * vl; src_ptr1 += 4 * vl; src_ptr2 += 4 * vl; src_ptr3 += 4 * vl; dst_ptr += vl; } while (w > 0); } #else void ScaleRowDown4Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { const uint8_t* src_ptr1 = src_ptr + src_stride; const uint8_t* src_ptr2 = src_ptr + src_stride * 2; const uint8_t* src_ptr3 = src_ptr + src_stride * 3; size_t w = (size_t)dst_width; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m2_t v_s0, v_s1, v_s2, v_s3; vuint8m2_t v_t0, v_t1, v_t2, v_t3; vuint8m2_t v_u0, v_u1, v_u2, v_u3; vuint8m2_t v_v0, v_v1, v_v2, v_v3; vuint16m4_t v_s01, v_s23, v_t01, v_t23; vuint16m4_t v_u01, v_u23, v_v01, v_v23; vuint16m4_t v_st01, v_st23, v_uv01, v_uv23; vuint16m4_t v_st0123, v_uv0123, v_stuv0123; vuint8m2_t v_dst; size_t vl = __riscv_vsetvl_e8m2(w); __riscv_vlseg4e8_v_u8m2(&v_s0, &v_s1, &v_s2, &v_s3, src_ptr, vl); v_s01 = __riscv_vwaddu_vv_u16m4(v_s0, v_s1, vl); __riscv_vlseg4e8_v_u8m2(&v_t0, &v_t1, &v_t2, &v_t3, src_ptr1, vl); v_t01 = __riscv_vwaddu_vv_u16m4(v_t0, v_t1, vl); __riscv_vlseg4e8_v_u8m2(&v_u0, &v_u1, &v_u2, &v_u3, src_ptr2, vl); v_u01 = __riscv_vwaddu_vv_u16m4(v_u0, v_u1, vl); v_u23 = __riscv_vwaddu_vv_u16m4(v_u2, v_u3, vl); v_s23 = __riscv_vwaddu_vv_u16m4(v_s2, v_s3, vl); v_t23 = __riscv_vwaddu_vv_u16m4(v_t2, v_t3, vl); v_st01 = __riscv_vadd_vv_u16m4(v_s01, v_t01, vl); v_st23 = __riscv_vadd_vv_u16m4(v_s23, v_t23, vl); __riscv_vlseg4e8_v_u8m2(&v_v0, &v_v1, &v_v2, &v_v3, src_ptr3, vl); v_v01 = __riscv_vwaddu_vv_u16m4(v_v0, v_v1, vl); v_v23 = __riscv_vwaddu_vv_u16m4(v_v2, v_v3, vl); v_uv01 = __riscv_vadd_vv_u16m4(v_u01, v_v01, vl); v_uv23 = __riscv_vadd_vv_u16m4(v_u23, v_v23, vl); v_st0123 = __riscv_vadd_vv_u16m4(v_st01, v_st23, vl); v_uv0123 = __riscv_vadd_vv_u16m4(v_uv01, v_uv23, vl); v_stuv0123 = __riscv_vadd_vv_u16m4(v_st0123, v_uv0123, vl); // Use round-to-nearest-up mode for vnclip v_dst = __riscv_vnclipu_wx_u8m2(v_stuv0123, 4, vl); __riscv_vse8_v_u8m2(dst_ptr, v_dst, vl); w -= vl; src_ptr += 4 * vl; src_ptr1 += 4 * vl; src_ptr2 += 4 * vl; src_ptr3 += 4 * vl; dst_ptr += vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN34_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowDown34_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_src = __riscv_vlseg4e8_v_u8m2x4(src_ptr, vl); vuint8m2_t v_0 = __riscv_vget_v_u8m2x4_u8m2(v_src, 0); vuint8m2_t v_1 = __riscv_vget_v_u8m2x4_u8m2(v_src, 1); vuint8m2_t v_3 = __riscv_vget_v_u8m2x4_u8m2(v_src, 3); vuint8m2x3_t v_dst = __riscv_vcreate_v_u8m2x3(v_0, v_1, v_3); __riscv_vsseg3e8_v_u8m2x3(dst_ptr, v_dst, vl); w -= vl; src_ptr += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown34_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2_t v_s0, v_s1, v_s2, v_s3; __riscv_vlseg4e8_v_u8m2(&v_s0, &v_s1, &v_s2, &v_s3, src_ptr, vl); __riscv_vsseg3e8_v_u8m2(dst_ptr, v_s0, v_s1, v_s3, vl); w -= vl; src_ptr += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN34_0_BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleRowDown34_0_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; do { vuint16m4_t v_t0_u16, v_t1_u16, v_t2_u16, v_t3_u16; vuint8m2_t v_u0, v_u1, v_u2, v_u3; vuint16m4_t v_u1_u16; vuint8m2_t v_a0, v_a1, v_a2; vuint8m2x3_t v_dst; size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_s = __riscv_vlseg4e8_v_u8m2x4(s, vl); vuint8m2_t v_s0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 0); vuint8m2_t v_s1 = __riscv_vget_v_u8m2x4_u8m2(v_s, 1); vuint8m2_t v_s2 = __riscv_vget_v_u8m2x4_u8m2(v_s, 2); vuint8m2_t v_s3 = __riscv_vget_v_u8m2x4_u8m2(v_s, 3); if (src_stride == 0) { v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_t2_u16 = __riscv_vwaddu_vx_u16m4(v_s2, 2, vl); v_t3_u16 = __riscv_vwaddu_vx_u16m4(v_s3, 2, vl); } else { vuint8m2x4_t v_t = __riscv_vlseg4e8_v_u8m2x4(t, vl); vuint8m2_t v_t0 = __riscv_vget_v_u8m2x4_u8m2(v_t, 0); vuint8m2_t v_t1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 1); vuint8m2_t v_t2 = __riscv_vget_v_u8m2x4_u8m2(v_t, 2); vuint8m2_t v_t3 = __riscv_vget_v_u8m2x4_u8m2(v_t, 3); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 0, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 0, vl); v_t2_u16 = __riscv_vwaddu_vx_u16m4(v_t2, 0, vl); v_t3_u16 = __riscv_vwaddu_vx_u16m4(v_t3, 0, vl); t += 4 * vl; } v_t0_u16 = __riscv_vwmaccu_vx_u16m4(v_t0_u16, 3, v_s0, vl); v_t1_u16 = __riscv_vwmaccu_vx_u16m4(v_t1_u16, 3, v_s1, vl); v_t2_u16 = __riscv_vwmaccu_vx_u16m4(v_t2_u16, 3, v_s2, vl); v_t3_u16 = __riscv_vwmaccu_vx_u16m4(v_t3_u16, 3, v_s3, vl); v_u0 = __riscv_vnclipu_wx_u8m2(v_t0_u16, 2, __RISCV_VXRM_RNU, vl); v_u1 = __riscv_vnclipu_wx_u8m2(v_t1_u16, 2, __RISCV_VXRM_RNU, vl); v_u2 = __riscv_vnclipu_wx_u8m2(v_t2_u16, 2, __RISCV_VXRM_RNU, vl); v_u3 = __riscv_vnclipu_wx_u8m2(v_t3_u16, 2, __RISCV_VXRM_RNU, vl); // a0 = (src[0] * 3 + s[1] * 1 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_u1, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_u0, vl); v_a0 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, __RISCV_VXRM_RNU, vl); // a1 = (src[1] * 1 + s[2] * 1 + 1) >> 1 v_a1 = __riscv_vaaddu_vv_u8m2(v_u1, v_u2, __RISCV_VXRM_RNU, vl); // a2 = (src[2] * 1 + s[3] * 3 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_u2, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_u3, vl); v_a2 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, __RISCV_VXRM_RNU, vl); v_dst = __riscv_vcreate_v_u8m2x3(v_a0, v_a1, v_a2); __riscv_vsseg3e8_v_u8m2x3(dst_ptr, v_dst, vl); w -= vl; s += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown34_0_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m2_t v_s0, v_s1, v_s2, v_s3; vuint16m4_t v_t0_u16, v_t1_u16, v_t2_u16, v_t3_u16; vuint8m2_t v_u0, v_u1, v_u2, v_u3; vuint16m4_t v_u1_u16; vuint8m2_t v_a0, v_a1, v_a2; size_t vl = __riscv_vsetvl_e8m2(w); __riscv_vlseg4e8_v_u8m2(&v_s0, &v_s1, &v_s2, &v_s3, s, vl); if (src_stride == 0) { v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_t2_u16 = __riscv_vwaddu_vx_u16m4(v_s2, 2, vl); v_t3_u16 = __riscv_vwaddu_vx_u16m4(v_s3, 2, vl); } else { vuint8m2_t v_t0, v_t1, v_t2, v_t3; __riscv_vlseg4e8_v_u8m2(&v_t0, &v_t1, &v_t2, &v_t3, t, vl); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 0, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 0, vl); v_t2_u16 = __riscv_vwaddu_vx_u16m4(v_t2, 0, vl); v_t3_u16 = __riscv_vwaddu_vx_u16m4(v_t3, 0, vl); t += 4 * vl; } v_t0_u16 = __riscv_vwmaccu_vx_u16m4(v_t0_u16, 3, v_s0, vl); v_t1_u16 = __riscv_vwmaccu_vx_u16m4(v_t1_u16, 3, v_s1, vl); v_t2_u16 = __riscv_vwmaccu_vx_u16m4(v_t2_u16, 3, v_s2, vl); v_t3_u16 = __riscv_vwmaccu_vx_u16m4(v_t3_u16, 3, v_s3, vl); // Use round-to-nearest-up mode for vnclip & averaging add v_u0 = __riscv_vnclipu_wx_u8m2(v_t0_u16, 2, vl); v_u1 = __riscv_vnclipu_wx_u8m2(v_t1_u16, 2, vl); v_u2 = __riscv_vnclipu_wx_u8m2(v_t2_u16, 2, vl); v_u3 = __riscv_vnclipu_wx_u8m2(v_t3_u16, 2, vl); // a0 = (src[0] * 3 + s[1] * 1 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_u1, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_u0, vl); v_a0 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, vl); // a1 = (src[1] * 1 + s[2] * 1 + 1) >> 1 v_a1 = __riscv_vaaddu_vv_u8m2(v_u1, v_u2, vl); // a2 = (src[2] * 1 + s[3] * 3 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_u2, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_u3, vl); v_a2 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, vl); __riscv_vsseg3e8_v_u8m2(dst_ptr, v_a0, v_a1, v_a2, vl); w -= vl; s += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN34_1_BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleRowDown34_1_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; do { vuint8m2_t v_ave0, v_ave1, v_ave2, v_ave3; vuint16m4_t v_u1_u16; vuint8m2_t v_a0, v_a1, v_a2; vuint8m2x3_t v_dst; size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_s = __riscv_vlseg4e8_v_u8m2x4(s, vl); vuint8m2_t v_s0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 0); vuint8m2_t v_s1 = __riscv_vget_v_u8m2x4_u8m2(v_s, 1); vuint8m2_t v_s2 = __riscv_vget_v_u8m2x4_u8m2(v_s, 2); vuint8m2_t v_s3 = __riscv_vget_v_u8m2x4_u8m2(v_s, 3); // Use round-to-nearest-up mode for vnclip & averaging add if (src_stride == 0) { v_ave0 = __riscv_vaaddu_vv_u8m2(v_s0, v_s0, __RISCV_VXRM_RNU, vl); v_ave1 = __riscv_vaaddu_vv_u8m2(v_s1, v_s1, __RISCV_VXRM_RNU, vl); v_ave2 = __riscv_vaaddu_vv_u8m2(v_s2, v_s2, __RISCV_VXRM_RNU, vl); v_ave3 = __riscv_vaaddu_vv_u8m2(v_s3, v_s3, __RISCV_VXRM_RNU, vl); } else { vuint8m2x4_t v_t = __riscv_vlseg4e8_v_u8m2x4(t, vl); vuint8m2_t v_t0 = __riscv_vget_v_u8m2x4_u8m2(v_t, 0); vuint8m2_t v_t1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 1); vuint8m2_t v_t2 = __riscv_vget_v_u8m2x4_u8m2(v_t, 2); vuint8m2_t v_t3 = __riscv_vget_v_u8m2x4_u8m2(v_t, 3); v_ave0 = __riscv_vaaddu_vv_u8m2(v_s0, v_t0, __RISCV_VXRM_RNU, vl); v_ave1 = __riscv_vaaddu_vv_u8m2(v_s1, v_t1, __RISCV_VXRM_RNU, vl); v_ave2 = __riscv_vaaddu_vv_u8m2(v_s2, v_t2, __RISCV_VXRM_RNU, vl); v_ave3 = __riscv_vaaddu_vv_u8m2(v_s3, v_t3, __RISCV_VXRM_RNU, vl); t += 4 * vl; } // a0 = (src[0] * 3 + s[1] * 1 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_ave1, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_ave0, vl); v_a0 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, __RISCV_VXRM_RNU, vl); // a1 = (src[1] * 1 + s[2] * 1 + 1) >> 1 v_a1 = __riscv_vaaddu_vv_u8m2(v_ave1, v_ave2, __RISCV_VXRM_RNU, vl); // a2 = (src[2] * 1 + s[3] * 3 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_ave2, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_ave3, vl); v_a2 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, __RISCV_VXRM_RNU, vl); v_dst = __riscv_vcreate_v_u8m2x3(v_a0, v_a1, v_a2); __riscv_vsseg3e8_v_u8m2x3(dst_ptr, v_dst, vl); w -= vl; s += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown34_1_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint8_t* s = src_ptr; const uint8_t* t = src_ptr + src_stride; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m2_t v_s0, v_s1, v_s2, v_s3; vuint8m2_t v_ave0, v_ave1, v_ave2, v_ave3; vuint16m4_t v_u1_u16; vuint8m2_t v_a0, v_a1, v_a2; size_t vl = __riscv_vsetvl_e8m2(w); __riscv_vlseg4e8_v_u8m2(&v_s0, &v_s1, &v_s2, &v_s3, s, vl); // Use round-to-nearest-up mode for vnclip & averaging add if (src_stride == 0) { v_ave0 = __riscv_vaaddu_vv_u8m2(v_s0, v_s0, vl); v_ave1 = __riscv_vaaddu_vv_u8m2(v_s1, v_s1, vl); v_ave2 = __riscv_vaaddu_vv_u8m2(v_s2, v_s2, vl); v_ave3 = __riscv_vaaddu_vv_u8m2(v_s3, v_s3, vl); } else { vuint8m2_t v_t0, v_t1, v_t2, v_t3; __riscv_vlseg4e8_v_u8m2(&v_t0, &v_t1, &v_t2, &v_t3, t, vl); v_ave0 = __riscv_vaaddu_vv_u8m2(v_s0, v_t0, vl); v_ave1 = __riscv_vaaddu_vv_u8m2(v_s1, v_t1, vl); v_ave2 = __riscv_vaaddu_vv_u8m2(v_s2, v_t2, vl); v_ave3 = __riscv_vaaddu_vv_u8m2(v_s3, v_t3, vl); t += 4 * vl; } // a0 = (src[0] * 3 + s[1] * 1 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_ave1, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_ave0, vl); v_a0 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, vl); // a1 = (src[1] * 1 + s[2] * 1 + 1) >> 1 v_a1 = __riscv_vaaddu_vv_u8m2(v_ave1, v_ave2, vl); // a2 = (src[2] * 1 + s[3] * 3 + 2) >> 2 v_u1_u16 = __riscv_vwaddu_vx_u16m4(v_ave2, 0, vl); v_u1_u16 = __riscv_vwmaccu_vx_u16m4(v_u1_u16, 3, v_ave3, vl); v_a2 = __riscv_vnclipu_wx_u8m2(v_u1_u16, 2, vl); __riscv_vsseg3e8_v_u8m2(dst_ptr, v_a0, v_a1, v_a2, vl); w -= vl; s += 4 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN38_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowDown38_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; (void)src_stride; assert(dst_width % 3 == 0); do { size_t vl = __riscv_vsetvl_e8m1(w); vuint8m1x8_t v_src = __riscv_vlseg8e8_v_u8m1x8(src_ptr, vl); vuint8m1_t v_s0 = __riscv_vget_v_u8m1x8_u8m1(v_src, 0); vuint8m1_t v_s3 = __riscv_vget_v_u8m1x8_u8m1(v_src, 3); vuint8m1_t v_s6 = __riscv_vget_v_u8m1x8_u8m1(v_src, 6); vuint8m1x3_t v_dst = __riscv_vcreate_v_u8m1x3(v_s0, v_s3, v_s6); __riscv_vsseg3e8_v_u8m1x3(dst_ptr, v_dst, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown38_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; (void)src_stride; assert(dst_width % 3 == 0); do { vuint8m1_t v_s0, v_s1, v_s2, v_s3, v_s4, v_s5, v_s6, v_s7; size_t vl = __riscv_vsetvl_e8m1(w); __riscv_vlseg8e8_v_u8m1(&v_s0, &v_s1, &v_s2, &v_s3, &v_s4, &v_s5, &v_s6, &v_s7, src_ptr, vl); __riscv_vsseg3e8_v_u8m1(dst_ptr, v_s0, v_s3, v_s6, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN38_2_BOX_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowDown38_2_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint16_t coeff_a = (65536u / 6u); const uint16_t coeff_b = (65536u / 4u); assert((dst_width % 3 == 0) && (dst_width > 0)); do { vuint16m2_t v_e, v_f, v_g; vuint8m1_t v_dst_e, v_dst_f, v_dst_g; vuint8m1x3_t v_dst; size_t vl = __riscv_vsetvl_e8m1(w); // s: e00, e10, e20, f00, f10, f20, g00, g10 vuint8m1x8_t v_s = __riscv_vlseg8e8_v_u8m1x8(src_ptr, vl); vuint8m1_t v_s0 = __riscv_vget_v_u8m1x8_u8m1(v_s, 0); vuint8m1_t v_s1 = __riscv_vget_v_u8m1x8_u8m1(v_s, 1); vuint8m1_t v_s2 = __riscv_vget_v_u8m1x8_u8m1(v_s, 2); vuint8m1_t v_s3 = __riscv_vget_v_u8m1x8_u8m1(v_s, 3); vuint8m1_t v_s4 = __riscv_vget_v_u8m1x8_u8m1(v_s, 4); vuint8m1_t v_s5 = __riscv_vget_v_u8m1x8_u8m1(v_s, 5); vuint8m1_t v_s6 = __riscv_vget_v_u8m1x8_u8m1(v_s, 6); vuint8m1_t v_s7 = __riscv_vget_v_u8m1x8_u8m1(v_s, 7); // t: e01, e11, e21, f01, f11, f21, g01, g11 vuint8m1x8_t v_t = __riscv_vlseg8e8_v_u8m1x8(src_ptr + src_stride, vl); vuint8m1_t v_t0 = __riscv_vget_v_u8m1x8_u8m1(v_t, 0); vuint8m1_t v_t1 = __riscv_vget_v_u8m1x8_u8m1(v_t, 1); vuint8m1_t v_t2 = __riscv_vget_v_u8m1x8_u8m1(v_t, 2); vuint8m1_t v_t3 = __riscv_vget_v_u8m1x8_u8m1(v_t, 3); vuint8m1_t v_t4 = __riscv_vget_v_u8m1x8_u8m1(v_t, 4); vuint8m1_t v_t5 = __riscv_vget_v_u8m1x8_u8m1(v_t, 5); vuint8m1_t v_t6 = __riscv_vget_v_u8m1x8_u8m1(v_t, 6); vuint8m1_t v_t7 = __riscv_vget_v_u8m1x8_u8m1(v_t, 7); // Calculate sum of [e00, e21] to v_e // Calculate sum of [f00, f21] to v_f // Calculate sum of [g00, g11] to v_g vuint16m2_t v_e0 = __riscv_vwaddu_vv_u16m2(v_s0, v_t0, vl); vuint16m2_t v_e1 = __riscv_vwaddu_vv_u16m2(v_s1, v_t1, vl); vuint16m2_t v_e2 = __riscv_vwaddu_vv_u16m2(v_s2, v_t2, vl); vuint16m2_t v_f0 = __riscv_vwaddu_vv_u16m2(v_s3, v_t3, vl); vuint16m2_t v_f1 = __riscv_vwaddu_vv_u16m2(v_s4, v_t4, vl); vuint16m2_t v_f2 = __riscv_vwaddu_vv_u16m2(v_s5, v_t5, vl); vuint16m2_t v_g0 = __riscv_vwaddu_vv_u16m2(v_s6, v_t6, vl); vuint16m2_t v_g1 = __riscv_vwaddu_vv_u16m2(v_s7, v_t7, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e1, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f1, vl); v_e = __riscv_vadd_vv_u16m2(v_e0, v_e2, vl); v_f = __riscv_vadd_vv_u16m2(v_f0, v_f2, vl); v_g = __riscv_vadd_vv_u16m2(v_g0, v_g1, vl); // Average in 16-bit fixed-point v_e = __riscv_vmulhu_vx_u16m2(v_e, coeff_a, vl); v_f = __riscv_vmulhu_vx_u16m2(v_f, coeff_a, vl); v_g = __riscv_vmulhu_vx_u16m2(v_g, coeff_b, vl); v_dst_e = __riscv_vnsrl_wx_u8m1(v_e, 0, vl); v_dst_f = __riscv_vnsrl_wx_u8m1(v_f, 0, vl); v_dst_g = __riscv_vnsrl_wx_u8m1(v_g, 0, vl); v_dst = __riscv_vcreate_v_u8m1x3(v_dst_e, v_dst_f, v_dst_g); __riscv_vsseg3e8_v_u8m1x3(dst_ptr, v_dst, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown38_2_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint16_t coeff_a = (65536u / 6u); const uint16_t coeff_b = (65536u / 4u); assert((dst_width % 3 == 0) && (dst_width > 0)); do { vuint8m1_t v_s0, v_s1, v_s2, v_s3, v_s4, v_s5, v_s6, v_s7; vuint8m1_t v_t0, v_t1, v_t2, v_t3, v_t4, v_t5, v_t6, v_t7; vuint16m2_t v_e0, v_e1, v_e2, v_e; vuint16m2_t v_f0, v_f1, v_f2, v_f; vuint16m2_t v_g0, v_g1, v_g; vuint8m1_t v_dst_e, v_dst_f, v_dst_g; size_t vl = __riscv_vsetvl_e8m1(w); // s: e00, e10, e20, f00, f10, f20, g00, g10 // t: e01, e11, e21, f01, f11, f21, g01, g11 __riscv_vlseg8e8_v_u8m1(&v_s0, &v_s1, &v_s2, &v_s3, &v_s4, &v_s5, &v_s6, &v_s7, src_ptr, vl); __riscv_vlseg8e8_v_u8m1(&v_t0, &v_t1, &v_t2, &v_t3, &v_t4, &v_t5, &v_t6, &v_t7, src_ptr + src_stride, vl); // Calculate sum of [e00, e21] to v_e // Calculate sum of [f00, f21] to v_f // Calculate sum of [g00, g11] to v_g v_e0 = __riscv_vwaddu_vv_u16m2(v_s0, v_t0, vl); v_e1 = __riscv_vwaddu_vv_u16m2(v_s1, v_t1, vl); v_e2 = __riscv_vwaddu_vv_u16m2(v_s2, v_t2, vl); v_f0 = __riscv_vwaddu_vv_u16m2(v_s3, v_t3, vl); v_f1 = __riscv_vwaddu_vv_u16m2(v_s4, v_t4, vl); v_f2 = __riscv_vwaddu_vv_u16m2(v_s5, v_t5, vl); v_g0 = __riscv_vwaddu_vv_u16m2(v_s6, v_t6, vl); v_g1 = __riscv_vwaddu_vv_u16m2(v_s7, v_t7, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e1, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f1, vl); v_e = __riscv_vadd_vv_u16m2(v_e0, v_e2, vl); v_f = __riscv_vadd_vv_u16m2(v_f0, v_f2, vl); v_g = __riscv_vadd_vv_u16m2(v_g0, v_g1, vl); // Average in 16-bit fixed-point v_e = __riscv_vmulhu_vx_u16m2(v_e, coeff_a, vl); v_f = __riscv_vmulhu_vx_u16m2(v_f, coeff_a, vl); v_g = __riscv_vmulhu_vx_u16m2(v_g, coeff_b, vl); v_dst_e = __riscv_vnsrl_wx_u8m1(v_e, 0, vl); v_dst_f = __riscv_vnsrl_wx_u8m1(v_f, 0, vl); v_dst_g = __riscv_vnsrl_wx_u8m1(v_g, 0, vl); __riscv_vsseg3e8_v_u8m1(dst_ptr, v_dst_e, v_dst_f, v_dst_g, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEROWDOWN38_3_BOX_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowDown38_3_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint16_t coeff_a = (65536u / 9u); const uint16_t coeff_b = (65536u / 6u); assert((dst_width % 3 == 0) && (dst_width > 0)); do { vuint16m2_t v_e0, v_e1, v_e2, v_e3, v_e4, v_e; vuint16m2_t v_f0, v_f1, v_f2, v_f3, v_f4, v_f; vuint16m2_t v_g0, v_g1, v_g2, v_g; vuint8m1_t v_dst_e, v_dst_f, v_dst_g; vuint8m1x3_t v_dst; size_t vl = __riscv_vsetvl_e8m1(w); // s: e00, e10, e20, f00, f10, f20, g00, g10 vuint8m1x8_t v_s = __riscv_vlseg8e8_v_u8m1x8(src_ptr, vl); vuint8m1_t v_s0 = __riscv_vget_v_u8m1x8_u8m1(v_s, 0); vuint8m1_t v_s1 = __riscv_vget_v_u8m1x8_u8m1(v_s, 1); vuint8m1_t v_s2 = __riscv_vget_v_u8m1x8_u8m1(v_s, 2); vuint8m1_t v_s3 = __riscv_vget_v_u8m1x8_u8m1(v_s, 3); vuint8m1_t v_s4 = __riscv_vget_v_u8m1x8_u8m1(v_s, 4); vuint8m1_t v_s5 = __riscv_vget_v_u8m1x8_u8m1(v_s, 5); vuint8m1_t v_s6 = __riscv_vget_v_u8m1x8_u8m1(v_s, 6); vuint8m1_t v_s7 = __riscv_vget_v_u8m1x8_u8m1(v_s, 7); // t: e01, e11, e21, f01, f11, f21, g01, g11 vuint8m1x8_t v_t = __riscv_vlseg8e8_v_u8m1x8(src_ptr + src_stride, vl); vuint8m1_t v_t0 = __riscv_vget_v_u8m1x8_u8m1(v_t, 0); vuint8m1_t v_t1 = __riscv_vget_v_u8m1x8_u8m1(v_t, 1); vuint8m1_t v_t2 = __riscv_vget_v_u8m1x8_u8m1(v_t, 2); vuint8m1_t v_t3 = __riscv_vget_v_u8m1x8_u8m1(v_t, 3); vuint8m1_t v_t4 = __riscv_vget_v_u8m1x8_u8m1(v_t, 4); vuint8m1_t v_t5 = __riscv_vget_v_u8m1x8_u8m1(v_t, 5); vuint8m1_t v_t6 = __riscv_vget_v_u8m1x8_u8m1(v_t, 6); vuint8m1_t v_t7 = __riscv_vget_v_u8m1x8_u8m1(v_t, 7); // u: e02, e12, e22, f02, f12, f22, g02, g12 vuint8m1x8_t v_u = __riscv_vlseg8e8_v_u8m1x8(src_ptr + 2 * src_stride, vl); vuint8m1_t v_u0 = __riscv_vget_v_u8m1x8_u8m1(v_u, 0); vuint8m1_t v_u1 = __riscv_vget_v_u8m1x8_u8m1(v_u, 1); vuint8m1_t v_u2 = __riscv_vget_v_u8m1x8_u8m1(v_u, 2); vuint8m1_t v_u3 = __riscv_vget_v_u8m1x8_u8m1(v_u, 3); vuint8m1_t v_u4 = __riscv_vget_v_u8m1x8_u8m1(v_u, 4); vuint8m1_t v_u5 = __riscv_vget_v_u8m1x8_u8m1(v_u, 5); vuint8m1_t v_u6 = __riscv_vget_v_u8m1x8_u8m1(v_u, 6); vuint8m1_t v_u7 = __riscv_vget_v_u8m1x8_u8m1(v_u, 7); // Calculate sum of [e00, e22] v_e0 = __riscv_vwaddu_vv_u16m2(v_s0, v_t0, vl); v_e1 = __riscv_vwaddu_vv_u16m2(v_s1, v_t1, vl); v_e2 = __riscv_vwaddu_vv_u16m2(v_s2, v_t2, vl); v_e3 = __riscv_vwaddu_vv_u16m2(v_u0, v_u1, vl); v_e4 = __riscv_vwaddu_vx_u16m2(v_u2, 0, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e1, vl); v_e2 = __riscv_vadd_vv_u16m2(v_e2, v_e3, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e4, vl); v_e = __riscv_vadd_vv_u16m2(v_e0, v_e2, vl); // Calculate sum of [f00, f22] v_f0 = __riscv_vwaddu_vv_u16m2(v_s3, v_t3, vl); v_f1 = __riscv_vwaddu_vv_u16m2(v_s4, v_t4, vl); v_f2 = __riscv_vwaddu_vv_u16m2(v_s5, v_t5, vl); v_f3 = __riscv_vwaddu_vv_u16m2(v_u3, v_u4, vl); v_f4 = __riscv_vwaddu_vx_u16m2(v_u5, 0, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f1, vl); v_f2 = __riscv_vadd_vv_u16m2(v_f2, v_f3, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f4, vl); v_f = __riscv_vadd_vv_u16m2(v_f0, v_f2, vl); // Calculate sum of [g00, g12] v_g0 = __riscv_vwaddu_vv_u16m2(v_s6, v_t6, vl); v_g1 = __riscv_vwaddu_vv_u16m2(v_s7, v_t7, vl); v_g2 = __riscv_vwaddu_vv_u16m2(v_u6, v_u7, vl); v_g = __riscv_vadd_vv_u16m2(v_g0, v_g1, vl); v_g = __riscv_vadd_vv_u16m2(v_g, v_g2, vl); // Average in 16-bit fixed-point v_e = __riscv_vmulhu_vx_u16m2(v_e, coeff_a, vl); v_f = __riscv_vmulhu_vx_u16m2(v_f, coeff_a, vl); v_g = __riscv_vmulhu_vx_u16m2(v_g, coeff_b, vl); v_dst_e = __riscv_vnsrl_wx_u8m1(v_e, 0, vl); v_dst_f = __riscv_vnsrl_wx_u8m1(v_f, 0, vl); v_dst_g = __riscv_vnsrl_wx_u8m1(v_g, 0, vl); v_dst = __riscv_vcreate_v_u8m1x3(v_dst_e, v_dst_f, v_dst_g); __riscv_vsseg3e8_v_u8m1x3(dst_ptr, v_dst, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #else void ScaleRowDown38_3_Box_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, int dst_width) { size_t w = (size_t)dst_width / 3u; const uint16_t coeff_a = (65536u / 9u); const uint16_t coeff_b = (65536u / 6u); assert((dst_width % 3 == 0) && (dst_width > 0)); do { vuint8m1_t v_s0, v_s1, v_s2, v_s3, v_s4, v_s5, v_s6, v_s7; vuint8m1_t v_t0, v_t1, v_t2, v_t3, v_t4, v_t5, v_t6, v_t7; vuint8m1_t v_u0, v_u1, v_u2, v_u3, v_u4, v_u5, v_u6, v_u7; vuint16m2_t v_e0, v_e1, v_e2, v_e3, v_e4, v_e; vuint16m2_t v_f0, v_f1, v_f2, v_f3, v_f4, v_f; vuint16m2_t v_g0, v_g1, v_g2, v_g; vuint8m1_t v_dst_e, v_dst_f, v_dst_g; size_t vl = __riscv_vsetvl_e8m1(w); // s: e00, e10, e20, f00, f10, f20, g00, g10 // t: e01, e11, e21, f01, f11, f21, g01, g11 // u: e02, e12, e22, f02, f12, f22, g02, g12 __riscv_vlseg8e8_v_u8m1(&v_s0, &v_s1, &v_s2, &v_s3, &v_s4, &v_s5, &v_s6, &v_s7, src_ptr, vl); __riscv_vlseg8e8_v_u8m1(&v_t0, &v_t1, &v_t2, &v_t3, &v_t4, &v_t5, &v_t6, &v_t7, src_ptr + src_stride, vl); __riscv_vlseg8e8_v_u8m1(&v_u0, &v_u1, &v_u2, &v_u3, &v_u4, &v_u5, &v_u6, &v_u7, src_ptr + 2 * src_stride, vl); // Calculate sum of [e00, e22] v_e0 = __riscv_vwaddu_vv_u16m2(v_s0, v_t0, vl); v_e1 = __riscv_vwaddu_vv_u16m2(v_s1, v_t1, vl); v_e2 = __riscv_vwaddu_vv_u16m2(v_s2, v_t2, vl); v_e3 = __riscv_vwaddu_vv_u16m2(v_u0, v_u1, vl); v_e4 = __riscv_vwaddu_vx_u16m2(v_u2, 0, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e1, vl); v_e2 = __riscv_vadd_vv_u16m2(v_e2, v_e3, vl); v_e0 = __riscv_vadd_vv_u16m2(v_e0, v_e4, vl); v_e = __riscv_vadd_vv_u16m2(v_e0, v_e2, vl); // Calculate sum of [f00, f22] v_f0 = __riscv_vwaddu_vv_u16m2(v_s3, v_t3, vl); v_f1 = __riscv_vwaddu_vv_u16m2(v_s4, v_t4, vl); v_f2 = __riscv_vwaddu_vv_u16m2(v_s5, v_t5, vl); v_f3 = __riscv_vwaddu_vv_u16m2(v_u3, v_u4, vl); v_f4 = __riscv_vwaddu_vx_u16m2(v_u5, 0, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f1, vl); v_f2 = __riscv_vadd_vv_u16m2(v_f2, v_f3, vl); v_f0 = __riscv_vadd_vv_u16m2(v_f0, v_f4, vl); v_f = __riscv_vadd_vv_u16m2(v_f0, v_f2, vl); // Calculate sum of [g00, g12] v_g0 = __riscv_vwaddu_vv_u16m2(v_s6, v_t6, vl); v_g1 = __riscv_vwaddu_vv_u16m2(v_s7, v_t7, vl); v_g2 = __riscv_vwaddu_vv_u16m2(v_u6, v_u7, vl); v_g = __riscv_vadd_vv_u16m2(v_g0, v_g1, vl); v_g = __riscv_vadd_vv_u16m2(v_g, v_g2, vl); // Average in 16-bit fixed-point v_e = __riscv_vmulhu_vx_u16m2(v_e, coeff_a, vl); v_f = __riscv_vmulhu_vx_u16m2(v_f, coeff_a, vl); v_g = __riscv_vmulhu_vx_u16m2(v_g, coeff_b, vl); v_dst_e = __riscv_vnsrl_wx_u8m1(v_e, 0, vl); v_dst_f = __riscv_vnsrl_wx_u8m1(v_f, 0, vl); v_dst_g = __riscv_vnsrl_wx_u8m1(v_g, 0, vl); __riscv_vsseg3e8_v_u8m1(dst_ptr, v_dst_e, v_dst_f, v_dst_g, vl); w -= vl; src_ptr += 8 * vl; dst_ptr += 3 * vl; } while (w > 0); } #endif #endif // ScaleUVRowUp2_(Bi)linear_RVV function is equal to other platforms' // ScaleRowUp2_(Bi)linear_Any_XXX. We process entire row in this function. Other // platforms only implement non-edge part of image and process edge with scalar. #ifdef HAS_SCALEROWUP2_LINEAR_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowUp2_Linear_RVV(const uint8_t* src_ptr, uint8_t* dst_ptr, int dst_width) { size_t work_width = (size_t)dst_width - 1u; size_t src_width = work_width >> 1u; const uint8_t* work_src_ptr = src_ptr; uint8_t* work_dst_ptr = dst_ptr + 1; size_t vl = __riscv_vsetvlmax_e8m4(); vuint8m4_t v_3 = __riscv_vmv_v_x_u8m4(3, vl); dst_ptr[0] = src_ptr[0]; while (src_width > 0) { vuint8m4_t v_src0, v_src1, v_dst_odd, v_dst_even; vuint16m8_t v_src0_u16, v_src1_u16; vuint8m4x2_t v_dst; size_t vl = __riscv_vsetvl_e8m4(src_width); v_src0 = __riscv_vle8_v_u8m4(work_src_ptr, vl); v_src1 = __riscv_vle8_v_u8m4(work_src_ptr + 1, vl); v_src0_u16 = __riscv_vwaddu_vx_u16m8(v_src0, 2, vl); v_src1_u16 = __riscv_vwaddu_vx_u16m8(v_src1, 2, vl); v_src0_u16 = __riscv_vwmaccu_vv_u16m8(v_src0_u16, v_3, v_src1, vl); v_src1_u16 = __riscv_vwmaccu_vv_u16m8(v_src1_u16, v_3, v_src0, vl); v_dst_odd = __riscv_vnsrl_wx_u8m4(v_src0_u16, 2, vl); v_dst_even = __riscv_vnsrl_wx_u8m4(v_src1_u16, 2, vl); v_dst = __riscv_vcreate_v_u8m4x2(v_dst_even, v_dst_odd); __riscv_vsseg2e8_v_u8m4x2(work_dst_ptr, v_dst, vl); src_width -= vl; work_src_ptr += vl; work_dst_ptr += 2 * vl; } dst_ptr[dst_width - 1] = src_ptr[(dst_width - 1) / 2]; } #else void ScaleRowUp2_Linear_RVV(const uint8_t* src_ptr, uint8_t* dst_ptr, int dst_width) { size_t work_width = (size_t)dst_width - 1u; size_t src_width = work_width >> 1u; const uint8_t* work_src_ptr = src_ptr; uint8_t* work_dst_ptr = dst_ptr + 1; size_t vl = __riscv_vsetvlmax_e8m4(); vuint8m4_t v_3 = __riscv_vmv_v_x_u8m4(3, vl); dst_ptr[0] = src_ptr[0]; while (src_width > 0) { vuint8m4_t v_src0, v_src1, v_dst_odd, v_dst_even; vuint16m8_t v_src0_u16, v_src1_u16; size_t vl = __riscv_vsetvl_e8m4(src_width); v_src0 = __riscv_vle8_v_u8m4(work_src_ptr, vl); v_src1 = __riscv_vle8_v_u8m4(work_src_ptr + 1, vl); v_src0_u16 = __riscv_vwaddu_vx_u16m8(v_src0, 2, vl); v_src1_u16 = __riscv_vwaddu_vx_u16m8(v_src1, 2, vl); v_src0_u16 = __riscv_vwmaccu_vv_u16m8(v_src0_u16, v_3, v_src1, vl); v_src1_u16 = __riscv_vwmaccu_vv_u16m8(v_src1_u16, v_3, v_src0, vl); v_dst_odd = __riscv_vnsrl_wx_u8m4(v_src0_u16, 2, vl); v_dst_even = __riscv_vnsrl_wx_u8m4(v_src1_u16, 2, vl); __riscv_vsseg2e8_v_u8m4(work_dst_ptr, v_dst_even, v_dst_odd, vl); src_width -= vl; work_src_ptr += vl; work_dst_ptr += 2 * vl; } dst_ptr[dst_width - 1] = src_ptr[(dst_width - 1) / 2]; } #endif #endif #ifdef HAS_SCALEROWUP2_BILINEAR_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleRowUp2_Bilinear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, ptrdiff_t dst_stride, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; size_t src_width = work_width >> 1u; const uint8_t* work_s = src_ptr; const uint8_t* work_t = src_ptr + src_stride; const uint8_t* s = work_s; const uint8_t* t = work_t; uint8_t* d = dst_ptr; uint8_t* e = dst_ptr + dst_stride; uint8_t* work_d = d + 1; uint8_t* work_e = e + 1; size_t vl = __riscv_vsetvlmax_e16m4(); vuint16m4_t v_3_u16 = __riscv_vmv_v_x_u16m4(3, vl); vuint8m2_t v_3_u8 = __riscv_vmv_v_x_u8m2(3, vl); d[0] = (3 * s[0] + t[0] + 2) >> 2; e[0] = (s[0] + 3 * t[0] + 2) >> 2; while (src_width > 0) { vuint8m2_t v_s0, v_s1, v_t0, v_t1; vuint16m4_t v_s0_u16, v_s1_u16, v_t0_u16, v_t1_u16; vuint16m4_t v_t0_u16_, v_t1_u16_; vuint8m2_t v_dst0_even, v_dst0_odd, v_dst1_even, v_dst1_odd; vuint8m2x2_t v_dst0, v_dst1; size_t vl = __riscv_vsetvl_e8m2(src_width); v_s0 = __riscv_vle8_v_u8m2(work_s, vl); v_s1 = __riscv_vle8_v_u8m2(work_s + 1, vl); v_s0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_s1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_s0_u16 = __riscv_vwmaccu_vv_u16m4(v_s0_u16, v_3_u8, v_s1, vl); v_s1_u16 = __riscv_vwmaccu_vv_u16m4(v_s1_u16, v_3_u8, v_s0, vl); v_t0 = __riscv_vle8_v_u8m2(work_t, vl); v_t1 = __riscv_vle8_v_u8m2(work_t + 1, vl); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 2, vl); v_t0_u16 = __riscv_vwmaccu_vv_u16m4(v_t0_u16, v_3_u8, v_t1, vl); v_t1_u16 = __riscv_vwmaccu_vv_u16m4(v_t1_u16, v_3_u8, v_t0, vl); v_t0_u16_ = __riscv_vmv_v_v_u16m4(v_t0_u16, vl); v_t1_u16_ = __riscv_vmv_v_v_u16m4(v_t1_u16, vl); v_t0_u16 = __riscv_vmacc_vv_u16m4(v_t0_u16, v_3_u16, v_s0_u16, vl); v_t1_u16 = __riscv_vmacc_vv_u16m4(v_t1_u16, v_3_u16, v_s1_u16, vl); v_s0_u16 = __riscv_vmacc_vv_u16m4(v_s0_u16, v_3_u16, v_t0_u16_, vl); v_s1_u16 = __riscv_vmacc_vv_u16m4(v_s1_u16, v_3_u16, v_t1_u16_, vl); v_dst0_odd = __riscv_vnsrl_wx_u8m2(v_t0_u16, 4, vl); v_dst0_even = __riscv_vnsrl_wx_u8m2(v_t1_u16, 4, vl); v_dst1_odd = __riscv_vnsrl_wx_u8m2(v_s0_u16, 4, vl); v_dst1_even = __riscv_vnsrl_wx_u8m2(v_s1_u16, 4, vl); v_dst0 = __riscv_vcreate_v_u8m2x2(v_dst0_even, v_dst0_odd); __riscv_vsseg2e8_v_u8m2x2(work_d, v_dst0, vl); v_dst1 = __riscv_vcreate_v_u8m2x2(v_dst1_even, v_dst1_odd); __riscv_vsseg2e8_v_u8m2x2(work_e, v_dst1, vl); src_width -= vl; work_s += vl; work_t += vl; work_d += 2 * vl; work_e += 2 * vl; } d[dst_width - 1] = (3 * s[(dst_width - 1) / 2] + t[(dst_width - 1) / 2] + 2) >> 2; e[dst_width - 1] = (s[(dst_width - 1) / 2] + 3 * t[(dst_width - 1) / 2] + 2) >> 2; } #else void ScaleRowUp2_Bilinear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, ptrdiff_t dst_stride, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; size_t src_width = work_width >> 1u; const uint8_t* work_s = src_ptr; const uint8_t* work_t = src_ptr + src_stride; const uint8_t* s = work_s; const uint8_t* t = work_t; uint8_t* d = dst_ptr; uint8_t* e = dst_ptr + dst_stride; uint8_t* work_d = d + 1; uint8_t* work_e = e + 1; size_t vl = __riscv_vsetvlmax_e16m4(); vuint16m4_t v_3_u16 = __riscv_vmv_v_x_u16m4(3, vl); vuint8m2_t v_3_u8 = __riscv_vmv_v_x_u8m2(3, vl); d[0] = (3 * s[0] + t[0] + 2) >> 2; e[0] = (s[0] + 3 * t[0] + 2) >> 2; while (src_width > 0) { vuint8m2_t v_s0, v_s1, v_t0, v_t1; vuint16m4_t v_s0_u16, v_s1_u16, v_t0_u16, v_t1_u16; vuint16m4_t v_t0_u16_, v_t1_u16_; vuint8m2_t v_dst0_even, v_dst0_odd, v_dst1_even, v_dst1_odd; size_t vl = __riscv_vsetvl_e8m2(src_width); v_s0 = __riscv_vle8_v_u8m2(work_s, vl); v_s1 = __riscv_vle8_v_u8m2(work_s + 1, vl); v_s0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_s1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_s0_u16 = __riscv_vwmaccu_vv_u16m4(v_s0_u16, v_3_u8, v_s1, vl); v_s1_u16 = __riscv_vwmaccu_vv_u16m4(v_s1_u16, v_3_u8, v_s0, vl); v_t0 = __riscv_vle8_v_u8m2(work_t, vl); v_t1 = __riscv_vle8_v_u8m2(work_t + 1, vl); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 2, vl); v_t0_u16 = __riscv_vwmaccu_vv_u16m4(v_t0_u16, v_3_u8, v_t1, vl); v_t1_u16 = __riscv_vwmaccu_vv_u16m4(v_t1_u16, v_3_u8, v_t0, vl); v_t0_u16_ = __riscv_vmv_v_v_u16m4(v_t0_u16, vl); v_t1_u16_ = __riscv_vmv_v_v_u16m4(v_t1_u16, vl); v_t0_u16 = __riscv_vmacc_vv_u16m4(v_t0_u16, v_3_u16, v_s0_u16, vl); v_t1_u16 = __riscv_vmacc_vv_u16m4(v_t1_u16, v_3_u16, v_s1_u16, vl); v_s0_u16 = __riscv_vmacc_vv_u16m4(v_s0_u16, v_3_u16, v_t0_u16_, vl); v_s1_u16 = __riscv_vmacc_vv_u16m4(v_s1_u16, v_3_u16, v_t1_u16_, vl); v_dst0_odd = __riscv_vnsrl_wx_u8m2(v_t0_u16, 4, vl); v_dst0_even = __riscv_vnsrl_wx_u8m2(v_t1_u16, 4, vl); v_dst1_odd = __riscv_vnsrl_wx_u8m2(v_s0_u16, 4, vl); v_dst1_even = __riscv_vnsrl_wx_u8m2(v_s1_u16, 4, vl); __riscv_vsseg2e8_v_u8m2(work_d, v_dst0_even, v_dst0_odd, vl); __riscv_vsseg2e8_v_u8m2(work_e, v_dst1_even, v_dst1_odd, vl); src_width -= vl; work_s += vl; work_t += vl; work_d += 2 * vl; work_e += 2 * vl; } d[dst_width - 1] = (3 * s[(dst_width - 1) / 2] + t[(dst_width - 1) / 2] + 2) >> 2; e[dst_width - 1] = (s[(dst_width - 1) / 2] + 3 * t[(dst_width - 1) / 2] + 2) >> 2; } #endif #endif #ifdef HAS_SCALEUVROWDOWN2_RVV void ScaleUVRowDown2_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { size_t w = (size_t)dst_width; const uint32_t* src = (const uint32_t*)src_uv; uint16_t* dst = (uint16_t*)dst_uv; (void)src_stride; do { size_t vl = __riscv_vsetvl_e32m8(w); vuint32m8_t v_data = __riscv_vle32_v_u32m8(src, vl); vuint16m4_t v_u1v1 = __riscv_vnsrl_wx_u16m4(v_data, 16, vl); __riscv_vse16_v_u16m4(dst, v_u1v1, vl); w -= vl; src += vl; dst += vl; } while (w > 0); } #endif #ifdef HAS_SCALEUVROWDOWN2LINEAR_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleUVRowDown2Linear_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { size_t w = (size_t)dst_width; const uint16_t* src = (const uint16_t*)src_uv; (void)src_stride; do { size_t vl = __riscv_vsetvl_e16m4(w); vuint16m4x2_t v_src = __riscv_vlseg2e16_v_u16m4x2(src, vl); vuint16m4_t v_u0v0_16 = __riscv_vget_v_u16m4x2_u16m4(v_src, 0); vuint16m4_t v_u1v1_16 = __riscv_vget_v_u16m4x2_u16m4(v_src, 1); vuint8m4_t v_u0v0 = __riscv_vreinterpret_v_u16m4_u8m4(v_u0v0_16); vuint8m4_t v_u1v1 = __riscv_vreinterpret_v_u16m4_u8m4(v_u1v1_16); vuint8m4_t v_avg = __riscv_vaaddu_vv_u8m4(v_u0v0, v_u1v1, __RISCV_VXRM_RNU, vl * 2); __riscv_vse8_v_u8m4(dst_uv, v_avg, vl * 2); w -= vl; src += vl * 2; dst_uv += vl * 2; } while (w > 0); } #else void ScaleUVRowDown2Linear_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { size_t w = (size_t)dst_width; const uint16_t* src = (const uint16_t*)src_uv; (void)src_stride; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m4_t v_u0v0, v_u1v1, v_avg; vuint16m4_t v_u0v0_16, v_u1v1_16; size_t vl = __riscv_vsetvl_e16m4(w); __riscv_vlseg2e16_v_u16m4(&v_u0v0_16, &v_u1v1_16, src, vl); v_u0v0 = __riscv_vreinterpret_v_u16m4_u8m4(v_u0v0_16); v_u1v1 = __riscv_vreinterpret_v_u16m4_u8m4(v_u1v1_16); // Use round-to-nearest-up mode for averaging add v_avg = __riscv_vaaddu_vv_u8m4(v_u0v0, v_u1v1, vl * 2); __riscv_vse8_v_u8m4(dst_uv, v_avg, vl * 2); w -= vl; src += vl * 2; dst_uv += vl * 2; } while (w > 0); } #endif #endif #ifdef HAS_SCALEUVROWDOWN2BOX_RVV #if defined(LIBYUV_RVV_HAS_TUPLE_TYPE) && defined(LIBYUV_RVV_HAS_VXRM_ARG) void ScaleUVRowDown2Box_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { const uint8_t* src_uv_row1 = src_uv + src_stride; size_t w = (size_t)dst_width; do { size_t vl = __riscv_vsetvl_e8m2(w); vuint8m2x4_t v_s = __riscv_vlseg4e8_v_u8m2x4(src_uv, vl); vuint8m2_t v_u0_row0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 0); vuint8m2_t v_v0_row0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 1); vuint8m2_t v_u1_row0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 2); vuint8m2_t v_v1_row0 = __riscv_vget_v_u8m2x4_u8m2(v_s, 3); vuint8m2x4_t v_t = __riscv_vlseg4e8_v_u8m2x4(src_uv_row1, vl); vuint8m2_t v_u0_row1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 0); vuint8m2_t v_v0_row1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 1); vuint8m2_t v_u1_row1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 2); vuint8m2_t v_v1_row1 = __riscv_vget_v_u8m2x4_u8m2(v_t, 3); vuint16m4_t v_u0u1_row0 = __riscv_vwaddu_vv_u16m4(v_u0_row0, v_u1_row0, vl); vuint16m4_t v_u0u1_row1 = __riscv_vwaddu_vv_u16m4(v_u0_row1, v_u1_row1, vl); vuint16m4_t v_v0v1_row0 = __riscv_vwaddu_vv_u16m4(v_v0_row0, v_v1_row0, vl); vuint16m4_t v_v0v1_row1 = __riscv_vwaddu_vv_u16m4(v_v0_row1, v_v1_row1, vl); vuint16m4_t v_sum0 = __riscv_vadd_vv_u16m4(v_u0u1_row0, v_u0u1_row1, vl); vuint16m4_t v_sum1 = __riscv_vadd_vv_u16m4(v_v0v1_row0, v_v0v1_row1, vl); vuint8m2_t v_dst_u = __riscv_vnclipu_wx_u8m2(v_sum0, 2, __RISCV_VXRM_RNU, vl); vuint8m2_t v_dst_v = __riscv_vnclipu_wx_u8m2(v_sum1, 2, __RISCV_VXRM_RNU, vl); vuint8m2x2_t v_dst_uv = __riscv_vcreate_v_u8m2x2(v_dst_u, v_dst_v); __riscv_vsseg2e8_v_u8m2x2(dst_uv, v_dst_uv, vl); dst_uv += 2 * vl; src_uv += 4 * vl; w -= vl; src_uv_row1 += 4 * vl; } while (w > 0); } #else void ScaleUVRowDown2Box_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { const uint8_t* src_uv_row1 = src_uv + src_stride; size_t w = (size_t)dst_width; // NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode // register) is set to round-to-nearest-up mode(0). asm volatile ("csrwi vxrm, 0"); do { vuint8m2_t v_u0_row0, v_v0_row0, v_u1_row0, v_v1_row0; vuint8m2_t v_u0_row1, v_v0_row1, v_u1_row1, v_v1_row1; vuint16m4_t v_u0u1_row0, v_u0u1_row1, v_v0v1_row0, v_v0v1_row1; vuint16m4_t v_sum0, v_sum1; vuint8m2_t v_dst_u, v_dst_v; size_t vl = __riscv_vsetvl_e8m2(w); __riscv_vlseg4e8_v_u8m2(&v_u0_row0, &v_v0_row0, &v_u1_row0, &v_v1_row0, src_uv, vl); __riscv_vlseg4e8_v_u8m2(&v_u0_row1, &v_v0_row1, &v_u1_row1, &v_v1_row1, src_uv_row1, vl); v_u0u1_row0 = __riscv_vwaddu_vv_u16m4(v_u0_row0, v_u1_row0, vl); v_u0u1_row1 = __riscv_vwaddu_vv_u16m4(v_u0_row1, v_u1_row1, vl); v_v0v1_row0 = __riscv_vwaddu_vv_u16m4(v_v0_row0, v_v1_row0, vl); v_v0v1_row1 = __riscv_vwaddu_vv_u16m4(v_v0_row1, v_v1_row1, vl); v_sum0 = __riscv_vadd_vv_u16m4(v_u0u1_row0, v_u0u1_row1, vl); v_sum1 = __riscv_vadd_vv_u16m4(v_v0v1_row0, v_v0v1_row1, vl); // Use round-to-nearest-up mode for vnclip v_dst_u = __riscv_vnclipu_wx_u8m2(v_sum0, 2, vl); v_dst_v = __riscv_vnclipu_wx_u8m2(v_sum1, 2, vl); __riscv_vsseg2e8_v_u8m2(dst_uv, v_dst_u, v_dst_v, vl); dst_uv += 2 * vl; src_uv += 4 * vl; w -= vl; src_uv_row1 += 4 * vl; } while (w > 0); } #endif #endif #ifdef HAS_SCALEUVROWDOWN4_RVV void ScaleUVRowDown4_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, int src_stepx, uint8_t* dst_uv, int dst_width) { // Overflow will never happen here, since sizeof(size_t)/sizeof(int)=2. // dst_width = src_width / 4 and src_width is also int. size_t w = (size_t)dst_width * 8; (void)src_stride; (void)src_stepx; do { size_t vl = __riscv_vsetvl_e8m8(w); vuint8m8_t v_row = __riscv_vle8_v_u8m8(src_uv, vl); vuint64m8_t v_row_64 = __riscv_vreinterpret_v_u8m8_u64m8(v_row); // Narrowing without clipping vuint32m4_t v_tmp = __riscv_vncvt_x_x_w_u32m4(v_row_64, vl / 8); vuint16m2_t v_dst_16 = __riscv_vncvt_x_x_w_u16m2(v_tmp, vl / 8); vuint8m2_t v_dst = __riscv_vreinterpret_v_u16m2_u8m2(v_dst_16); __riscv_vse8_v_u8m2(dst_uv, v_dst, vl / 4); w -= vl; src_uv += vl; dst_uv += vl / 4; } while (w > 0); } #endif #ifdef HAS_SCALEUVROWDOWNEVEN_RVV void ScaleUVRowDownEven_RVV(const uint8_t* src_uv, ptrdiff_t src_stride, int src_stepx, uint8_t* dst_uv, int dst_width) { size_t w = (size_t)dst_width; const ptrdiff_t stride_byte = (ptrdiff_t)src_stepx * 2; const uint16_t* src = (const uint16_t*)(src_uv); uint16_t* dst = (uint16_t*)(dst_uv); (void)src_stride; do { size_t vl = __riscv_vsetvl_e16m8(w); vuint16m8_t v_row = __riscv_vlse16_v_u16m8(src, stride_byte, vl); __riscv_vse16_v_u16m8(dst, v_row, vl); w -= vl; src += vl * src_stepx; dst += vl; } while (w > 0); } #endif // ScaleUVRowUp2_(Bi)linear_RVV function is equal to other platforms' // ScaleUVRowUp2_(Bi)linear_Any_XXX. We process entire row in this function. // Other platforms only implement non-edge part of image and process edge with // scalar. #ifdef HAS_SCALEUVROWUP2_LINEAR_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleUVRowUp2_Linear_RVV(const uint8_t* src_ptr, uint8_t* dst_ptr, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; uint16_t* work_dst_ptr = (uint16_t*)dst_ptr + 1; const uint8_t* work_src_ptr = src_ptr; size_t vl = __riscv_vsetvlmax_e8m4(); vuint8m4_t v_3_u8 = __riscv_vmv_v_x_u8m4(3, vl); dst_ptr[0] = src_ptr[0]; dst_ptr[1] = src_ptr[1]; while (work_width > 0) { vuint8m4_t v_uv0, v_uv1, v_dst_odd_u8, v_dst_even_u8; vuint16m4_t v_dst_odd, v_dst_even; vuint16m8_t v_uv0_u16, v_uv1_u16; vuint16m4x2_t v_dst; size_t vl = __riscv_vsetvl_e8m4(work_width); v_uv0 = __riscv_vle8_v_u8m4(work_src_ptr, vl); v_uv1 = __riscv_vle8_v_u8m4(work_src_ptr + 2, vl); v_uv0_u16 = __riscv_vwaddu_vx_u16m8(v_uv0, 2, vl); v_uv1_u16 = __riscv_vwaddu_vx_u16m8(v_uv1, 2, vl); v_uv0_u16 = __riscv_vwmaccu_vv_u16m8(v_uv0_u16, v_3_u8, v_uv1, vl); v_uv1_u16 = __riscv_vwmaccu_vv_u16m8(v_uv1_u16, v_3_u8, v_uv0, vl); v_dst_odd_u8 = __riscv_vnsrl_wx_u8m4(v_uv0_u16, 2, vl); v_dst_even_u8 = __riscv_vnsrl_wx_u8m4(v_uv1_u16, 2, vl); v_dst_even = __riscv_vreinterpret_v_u8m4_u16m4(v_dst_even_u8); v_dst_odd = __riscv_vreinterpret_v_u8m4_u16m4(v_dst_odd_u8); v_dst = __riscv_vcreate_v_u16m4x2(v_dst_even, v_dst_odd); __riscv_vsseg2e16_v_u16m4x2(work_dst_ptr, v_dst, vl / 2); work_width -= vl; work_src_ptr += vl; work_dst_ptr += vl; } dst_ptr[2 * dst_width - 2] = src_ptr[((dst_width + 1) & ~1) - 2]; dst_ptr[2 * dst_width - 1] = src_ptr[((dst_width + 1) & ~1) - 1]; } #else void ScaleUVRowUp2_Linear_RVV(const uint8_t* src_ptr, uint8_t* dst_ptr, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; uint16_t* work_dst_ptr = (uint16_t*)dst_ptr + 1; const uint8_t* work_src_ptr = src_ptr; size_t vl = __riscv_vsetvlmax_e8m4(); vuint8m4_t v_3_u8 = __riscv_vmv_v_x_u8m4(3, vl); dst_ptr[0] = src_ptr[0]; dst_ptr[1] = src_ptr[1]; while (work_width > 0) { vuint8m4_t v_uv0, v_uv1, v_dst_odd_u8, v_dst_even_u8; vuint16m4_t v_dst_odd, v_dst_even; vuint16m8_t v_uv0_u16, v_uv1_u16; size_t vl = __riscv_vsetvl_e8m4(work_width); v_uv0 = __riscv_vle8_v_u8m4(work_src_ptr, vl); v_uv1 = __riscv_vle8_v_u8m4(work_src_ptr + 2, vl); v_uv0_u16 = __riscv_vwaddu_vx_u16m8(v_uv0, 2, vl); v_uv1_u16 = __riscv_vwaddu_vx_u16m8(v_uv1, 2, vl); v_uv0_u16 = __riscv_vwmaccu_vv_u16m8(v_uv0_u16, v_3_u8, v_uv1, vl); v_uv1_u16 = __riscv_vwmaccu_vv_u16m8(v_uv1_u16, v_3_u8, v_uv0, vl); v_dst_odd_u8 = __riscv_vnsrl_wx_u8m4(v_uv0_u16, 2, vl); v_dst_even_u8 = __riscv_vnsrl_wx_u8m4(v_uv1_u16, 2, vl); v_dst_even = __riscv_vreinterpret_v_u8m4_u16m4(v_dst_even_u8); v_dst_odd = __riscv_vreinterpret_v_u8m4_u16m4(v_dst_odd_u8); __riscv_vsseg2e16_v_u16m4(work_dst_ptr, v_dst_even, v_dst_odd, vl / 2); work_width -= vl; work_src_ptr += vl; work_dst_ptr += vl; } dst_ptr[2 * dst_width - 2] = src_ptr[((dst_width + 1) & ~1) - 2]; dst_ptr[2 * dst_width - 1] = src_ptr[((dst_width + 1) & ~1) - 1]; } #endif #endif #ifdef HAS_SCALEUVROWUP2_BILINEAR_RVV #ifdef LIBYUV_RVV_HAS_TUPLE_TYPE void ScaleUVRowUp2_Bilinear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, ptrdiff_t dst_stride, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; const uint8_t* work_s = src_ptr; const uint8_t* work_t = src_ptr + src_stride; const uint8_t* s = work_s; const uint8_t* t = work_t; uint8_t* d = dst_ptr; uint8_t* e = dst_ptr + dst_stride; uint16_t* work_d = (uint16_t*)d + 1; uint16_t* work_e = (uint16_t*)e + 1; size_t vl = __riscv_vsetvlmax_e16m4(); vuint16m4_t v_3_u16 = __riscv_vmv_v_x_u16m4(3, vl); vuint8m2_t v_3_u8 = __riscv_vmv_v_x_u8m2(3, vl); d[0] = (3 * s[0] + t[0] + 2) >> 2; e[0] = (s[0] + 3 * t[0] + 2) >> 2; d[1] = (3 * s[1] + t[1] + 2) >> 2; e[1] = (s[1] + 3 * t[1] + 2) >> 2; while (work_width > 0) { vuint8m2_t v_s0, v_s1, v_t0, v_t1; vuint16m4_t v_s0_u16, v_s1_u16, v_t0_u16, v_t1_u16; vuint16m4_t v_t0_u16_, v_t1_u16_; vuint8m2_t v_dst0_odd_u8, v_dst0_even_u8, v_dst1_odd_u8, v_dst1_even_u8; vuint16m2_t v_dst0_even, v_dst0_odd, v_dst1_even, v_dst1_odd; vuint16m2x2_t v_dst0, v_dst1; size_t vl = __riscv_vsetvl_e8m2(work_width); v_s0 = __riscv_vle8_v_u8m2(work_s, vl); v_s1 = __riscv_vle8_v_u8m2(work_s + 2, vl); v_s0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_s1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_s0_u16 = __riscv_vwmaccu_vv_u16m4(v_s0_u16, v_3_u8, v_s1, vl); v_s1_u16 = __riscv_vwmaccu_vv_u16m4(v_s1_u16, v_3_u8, v_s0, vl); v_t0 = __riscv_vle8_v_u8m2(work_t, vl); v_t1 = __riscv_vle8_v_u8m2(work_t + 2, vl); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 2, vl); v_t0_u16 = __riscv_vwmaccu_vv_u16m4(v_t0_u16, v_3_u8, v_t1, vl); v_t1_u16 = __riscv_vwmaccu_vv_u16m4(v_t1_u16, v_3_u8, v_t0, vl); v_t0_u16_ = __riscv_vmv_v_v_u16m4(v_t0_u16, vl); v_t1_u16_ = __riscv_vmv_v_v_u16m4(v_t1_u16, vl); v_t0_u16 = __riscv_vmacc_vv_u16m4(v_t0_u16, v_3_u16, v_s0_u16, vl); v_t1_u16 = __riscv_vmacc_vv_u16m4(v_t1_u16, v_3_u16, v_s1_u16, vl); v_s0_u16 = __riscv_vmacc_vv_u16m4(v_s0_u16, v_3_u16, v_t0_u16_, vl); v_s1_u16 = __riscv_vmacc_vv_u16m4(v_s1_u16, v_3_u16, v_t1_u16_, vl); v_dst0_odd_u8 = __riscv_vnsrl_wx_u8m2(v_t0_u16, 4, vl); v_dst0_even_u8 = __riscv_vnsrl_wx_u8m2(v_t1_u16, 4, vl); v_dst1_odd_u8 = __riscv_vnsrl_wx_u8m2(v_s0_u16, 4, vl); v_dst1_even_u8 = __riscv_vnsrl_wx_u8m2(v_s1_u16, 4, vl); v_dst0_even = __riscv_vreinterpret_v_u8m2_u16m2(v_dst0_even_u8); v_dst0_odd = __riscv_vreinterpret_v_u8m2_u16m2(v_dst0_odd_u8); v_dst1_even = __riscv_vreinterpret_v_u8m2_u16m2(v_dst1_even_u8); v_dst1_odd = __riscv_vreinterpret_v_u8m2_u16m2(v_dst1_odd_u8); v_dst0 = __riscv_vcreate_v_u16m2x2(v_dst0_even, v_dst0_odd); __riscv_vsseg2e16_v_u16m2x2(work_d, v_dst0, vl / 2); v_dst1 = __riscv_vcreate_v_u16m2x2(v_dst1_even, v_dst1_odd); __riscv_vsseg2e16_v_u16m2x2(work_e, v_dst1, vl / 2); work_width -= vl; work_s += vl; work_t += vl; work_d += vl; work_e += vl; } d[2 * dst_width - 2] = (3 * s[((dst_width + 1) & ~1) - 2] + t[((dst_width + 1) & ~1) - 2] + 2) >> 2; e[2 * dst_width - 2] = (s[((dst_width + 1) & ~1) - 2] + 3 * t[((dst_width + 1) & ~1) - 2] + 2) >> 2; d[2 * dst_width - 1] = (3 * s[((dst_width + 1) & ~1) - 1] + t[((dst_width + 1) & ~1) - 1] + 2) >> 2; e[2 * dst_width - 1] = (s[((dst_width + 1) & ~1) - 1] + 3 * t[((dst_width + 1) & ~1) - 1] + 2) >> 2; } #else void ScaleUVRowUp2_Bilinear_RVV(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst_ptr, ptrdiff_t dst_stride, int dst_width) { size_t work_width = ((size_t)dst_width - 1u) & ~1u; const uint8_t* work_s = src_ptr; const uint8_t* work_t = src_ptr + src_stride; const uint8_t* s = work_s; const uint8_t* t = work_t; uint8_t* d = dst_ptr; uint8_t* e = dst_ptr + dst_stride; uint16_t* work_d = (uint16_t*)d + 1; uint16_t* work_e = (uint16_t*)e + 1; size_t vl = __riscv_vsetvlmax_e16m4(); vuint16m4_t v_3_u16 = __riscv_vmv_v_x_u16m4(3, vl); vuint8m2_t v_3_u8 = __riscv_vmv_v_x_u8m2(3, vl); d[0] = (3 * s[0] + t[0] + 2) >> 2; e[0] = (s[0] + 3 * t[0] + 2) >> 2; d[1] = (3 * s[1] + t[1] + 2) >> 2; e[1] = (s[1] + 3 * t[1] + 2) >> 2; while (work_width > 0) { vuint8m2_t v_s0, v_s1, v_t0, v_t1; vuint16m4_t v_s0_u16, v_s1_u16, v_t0_u16, v_t1_u16; vuint16m4_t v_t0_u16_, v_t1_u16_; vuint8m2_t v_dst0_odd_u8, v_dst0_even_u8, v_dst1_odd_u8, v_dst1_even_u8; vuint16m2_t v_dst0_even, v_dst0_odd, v_dst1_even, v_dst1_odd; size_t vl = __riscv_vsetvl_e8m2(work_width); v_s0 = __riscv_vle8_v_u8m2(work_s, vl); v_s1 = __riscv_vle8_v_u8m2(work_s + 2, vl); v_s0_u16 = __riscv_vwaddu_vx_u16m4(v_s0, 2, vl); v_s1_u16 = __riscv_vwaddu_vx_u16m4(v_s1, 2, vl); v_s0_u16 = __riscv_vwmaccu_vv_u16m4(v_s0_u16, v_3_u8, v_s1, vl); v_s1_u16 = __riscv_vwmaccu_vv_u16m4(v_s1_u16, v_3_u8, v_s0, vl); v_t0 = __riscv_vle8_v_u8m2(work_t, vl); v_t1 = __riscv_vle8_v_u8m2(work_t + 2, vl); v_t0_u16 = __riscv_vwaddu_vx_u16m4(v_t0, 2, vl); v_t1_u16 = __riscv_vwaddu_vx_u16m4(v_t1, 2, vl); v_t0_u16 = __riscv_vwmaccu_vv_u16m4(v_t0_u16, v_3_u8, v_t1, vl); v_t1_u16 = __riscv_vwmaccu_vv_u16m4(v_t1_u16, v_3_u8, v_t0, vl); v_t0_u16_ = __riscv_vmv_v_v_u16m4(v_t0_u16, vl); v_t1_u16_ = __riscv_vmv_v_v_u16m4(v_t1_u16, vl); v_t0_u16 = __riscv_vmacc_vv_u16m4(v_t0_u16, v_3_u16, v_s0_u16, vl); v_t1_u16 = __riscv_vmacc_vv_u16m4(v_t1_u16, v_3_u16, v_s1_u16, vl); v_s0_u16 = __riscv_vmacc_vv_u16m4(v_s0_u16, v_3_u16, v_t0_u16_, vl); v_s1_u16 = __riscv_vmacc_vv_u16m4(v_s1_u16, v_3_u16, v_t1_u16_, vl); v_dst0_odd_u8 = __riscv_vnsrl_wx_u8m2(v_t0_u16, 4, vl); v_dst0_even_u8 = __riscv_vnsrl_wx_u8m2(v_t1_u16, 4, vl); v_dst1_odd_u8 = __riscv_vnsrl_wx_u8m2(v_s0_u16, 4, vl); v_dst1_even_u8 = __riscv_vnsrl_wx_u8m2(v_s1_u16, 4, vl); v_dst0_even = __riscv_vreinterpret_v_u8m2_u16m2(v_dst0_even_u8); v_dst0_odd = __riscv_vreinterpret_v_u8m2_u16m2(v_dst0_odd_u8); v_dst1_even = __riscv_vreinterpret_v_u8m2_u16m2(v_dst1_even_u8); v_dst1_odd = __riscv_vreinterpret_v_u8m2_u16m2(v_dst1_odd_u8); __riscv_vsseg2e16_v_u16m2(work_d, v_dst0_even, v_dst0_odd, vl / 2); __riscv_vsseg2e16_v_u16m2(work_e, v_dst1_even, v_dst1_odd, vl / 2); work_width -= vl; work_s += vl; work_t += vl; work_d += vl; work_e += vl; } d[2 * dst_width - 2] = (3 * s[((dst_width + 1) & ~1) - 2] + t[((dst_width + 1) & ~1) - 2] + 2) >> 2; e[2 * dst_width - 2] = (s[((dst_width + 1) & ~1) - 2] + 3 * t[((dst_width + 1) & ~1) - 2] + 2) >> 2; d[2 * dst_width - 1] = (3 * s[((dst_width + 1) & ~1) - 1] + t[((dst_width + 1) & ~1) - 1] + 2) >> 2; e[2 * dst_width - 1] = (s[((dst_width + 1) & ~1) - 1] + 3 * t[((dst_width + 1) & ~1) - 1] + 2) >> 2; } #endif #endif #ifdef __cplusplus } // extern "C" } // namespace libyuv #endif #endif // !defined(LIBYUV_DISABLE_RVV) && defined(__riscv_vector) && // defined(__clang__)
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