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libyuv/source/row_rvv.cc
Frank Barchard 58d817ed81 Fix remaining inline asm input/output constraints and clobbers 
Mark modified inline asm operands as read-write (+r / +c) and add missing
volatile/memory clobbers so compilers and LTO do not assume modified
registers remain unchanged across asm blocks:
- HashDjb2_NEON (compare_neon64.cc): [src] "+r"(src) for post-increment ldr
- FixedDiv1_X86 (scale_gcc.cc): "+c"(div) for sub $0x1, %1
- P410ToARGBRow_SVE_SC & P410ToAR30Row_SVE_SC (row_sve.h): [vl] "+r"(vl)
  for tail cntw %x[vl]
- SwapUVRow_RVV & ARGBMultiplyRow_RVV (row_rvv.cc): use asm volatile and
  "memory" clobber instead of VLA memory operands on mutated pointers

R=rrwinterton@gmail.com

Bug: b/571179207
Test: libyuv_unittest
Change-Id: I3c2475d1e5bdab13e74643a028eebc350edcc1bb
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8565646
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
2026-10-13 11:20:48 -07:00

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/*
* 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 <darren.hsieh@sifive.com>
* Contributed by Bruce Lai <bruce.lai@sifive.com>
*/
#include "libyuv/row.h"
// Note: every register written by an inline asm block (vector, general
// purpose, mask/predicate, "cc" for flags and "memory" for stores) must be
// listed in its clobber list, even when the ABI treats it as caller-saved.
// With LTO/LTCG the compiler may keep values live in any register across the
// asm statement, and other OS ABIs (e.g. Windows) differ in which registers
// are callee-saved. List "memory" first, then "cc", then registers.
// This module is for RVV (RISC-V Vector extension)
#if !defined(LIBYUV_DISABLE_RVV) && defined(__riscv_vector)
#include <assert.h>
// vsetvli/vsetivli write the vl and vtype CSRs. Only "vl" is declared, and
// only for GCC; clang historically rejected it. The "vtype" register is
// intentionally not declared, and whether it should be is unresolved.
// TODO(fbarchard): consider adding "vtype" (and "vl" for clang) to the
// clobber list once confirmed with compiler maintainers.
#ifndef RVV_VL_CLOBBER
#ifdef __clang__
#define RVV_VL_CLOBBER
#else
#define RVV_VL_CLOBBER "vl",
#endif
#endif
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
// Fill YUV -> RGB conversion constants into registers
// NOTE: To match behavior on other platforms, vxrm (fixed-point rounding mode
// register) is set to round-to-nearest-up mode(0).
#define YUVTORGB_SETUP \
"csrwi vxrm, 0 \n" \
"lbu %[ub], 0(%[yuvconst]) \n" \
"lbu %[vr], 1(%[yuvconst]) \n" \
"lbu %[ug], 2(%[yuvconst]) \n" \
"lbu %[vg], 3(%[yuvconst]) \n" \
"lhu %[yg], 16(%[yuvconst])\n" \
"lh %[bb], 18(%[yuvconst])\n" \
"lh %[bg], 20(%[yuvconst])\n" \
"lh %[br], 22(%[yuvconst])\n" \
"addi %[bb], %[bb], 32 \n" \
"addi %[bg], %[bg], -32 \n" \
"addi %[br], %[br], 32 \n" \
"li %[k0101], 0x0101 \n"
// Fill YUV -> AR30 conversion constants into registers
#define YUVTORGB_SETUP_AR30 \
"csrwi vxrm, 0 \n" \
"lbu %[ub], 0(%[yuvconst]) \n" \
"lbu %[vr], 1(%[yuvconst]) \n" \
"lbu %[ug], 2(%[yuvconst]) \n" \
"lbu %[vg], 3(%[yuvconst]) \n" \
"lhu %[yg], 16(%[yuvconst])\n" \
"lh %[bb], 18(%[yuvconst])\n" \
"lh %[bg], 20(%[yuvconst])\n" \
"lh %[br], 22(%[yuvconst])\n" \
"addi %[bb], %[bb], 24 \n" \
"addi %[bg], %[bg], -24 \n" \
"addi %[br], %[br], 24 \n" \
"li %[k0101], 0x0101 \n"
// Read [2*VLEN/8] Y, [VLEN/8] U and [VLEN/8] V from 422
#define READYUV422 \
"addi %[vl], %[w], 1 \n" \
"srli %[vl], %[vl], 1 \n" \
"vsetvli %[vl], %[vl], e8, m1, ta, ma \n" \
"vle8.v v0, (%[src_u]) \n" \
"vle8.v v1, (%[src_v]) \n" \
"vwcvtu.x.x.v v2, v0 \n" \
"vwcvtu.x.x.v v4, v1 \n" \
"vsetvli zero, zero, e16, m2, ta, ma \n" \
"vmul.vx v2, v2, %[k0101] \n" \
"vmul.vx v4, v4, %[k0101] \n" \
"vsetvli %[vl], %[w], e8, m2, ta, ma \n" \
"vle8.v v0, (%[src_y]) \n" \
"vwcvtu.x.x.v v8, v0 \n"
// Read [2*VLEN/8] Y, [2*VLEN/8] U, and [2*VLEN/8] V from 444
#define READYUV444 \
"vsetvli %[vl], %[w], e8, m2, ta, ma \n" \
"vle8.v v0, (%[src_y]) \n" \
"vle8.v v2, (%[src_u]) \n" \
"vle8.v v4, (%[src_v]) \n" \
"vwcvtu.x.x.v v8, v0 \n"
// Read [2*VLEN/8] Y from src_y; Read [VLEN/8] U and [VLEN/8] V from src_uv
#define READNV12 \
"addi %[vl], %[w], 1 \n" \
"srli %[vl], %[vl], 1 \n" \
"vsetvli %[vl], %[vl], e8, m1, ta, ma \n" \
"vlseg2e8.v v0, (%[src_uv]) \n" \
"vwcvtu.x.x.v v2, v0 \n" \
"vwcvtu.x.x.v v4, v1 \n" \
"vsetvli zero, zero, e16, m2, ta, ma \n" \
"vmul.vx v2, v2, %[k0101] \n" \
"vmul.vx v4, v4, %[k0101] \n" \
"vsetvli %[vl], %[w], e8, m2, ta, ma \n" \
"vle8.v v0, (%[src_y]) \n" \
"vwcvtu.x.x.v v8, v0 \n"
// Read 2*[VLEN/8] Y from src_y; Read [VLEN/8] U and [VLEN/8] V from src_vu
#define READNV21 \
"addi %[vl], %[w], 1 \n" \
"srli %[vl], %[vl], 1 \n" \
"vsetvli %[vl], %[vl], e8, m1, ta, ma \n" \
"vlseg2e8.v v0, (%[src_vu]) \n" \
"vwcvtu.x.x.v v4, v0 \n" \
"vwcvtu.x.x.v v2, v1 \n" \
"vsetvli zero, zero, e16, m2, ta, ma \n" \
"vmul.vx v2, v2, %[k0101] \n" \
"vmul.vx v4, v4, %[k0101] \n" \
"vsetvli %[vl], %[w], e8, m2, ta, ma \n" \
"vle8.v v0, (%[src_y]) \n" \
"vwcvtu.x.x.v v8, v0 \n"
// Convert from YUV to fixed point RGB
#define YUVTORGB \
"vwmulu.vx v12, v2, %[ug] \n" \
"vwmaccu.vx v12, %[vg], v4 \n" \
"vwmulu.vx v0, v2, %[ub] \n" \
"vsetvli zero, zero, e16, m4, ta, ma \n" \
"vmul.vx v8, v8, %[k0101] \n" \
"vmulhu.vx v8, v8, %[yg] \n" \
"vadd.vx v16, v8, %[bg] \n" \
"vadd.vv v0, v8, v0 \n" \
"vsetvli zero, zero, e8, m2, ta, ma \n" \
"vwmaccu.vx v8, %[vr], v4 \n" \
"vsetvli zero, zero, e16, m4, ta, ma \n" \
"vssubu.vv v12, v16, v12 \n" \
"vssubu.vx v0, v0, %[bb] \n" \
"vssubu.vx v8, v8, %[br] \n"
// Convert from fixed point RGB To 8 bit RGB
#define RGBTORGB8 \
"vsetvli zero, zero, e8, m2, ta, ma \n" \
"vnclipu.wi v26, v12, 6 \n" \
"vnclipu.wi v24, v0, 6 \n" \
"vnclipu.wi v28, v8, 6 \n"
#define YUVTORGB_REGS \
"v0", "v1", "v2", "v3", "v4", "v5", "v8", "v9", "v10", "v11", "v12", "v13", \
"v14", "v15", "v16", "v17", "v18", "v19", "v24", "v25", "v26", "v27", \
"v28", "v29"
#ifdef HAS_ARGBTOAR64ROW_RVV
void ARGBToAR64Row_RVV(const uint8_t* src_argb, uint16_t* dst_ar64, int width) {
int vl;
asm volatile(
"slli %[w], %[w], 2 \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v16, (%[src_argb]) \n"
"vwcvtu.x.x.v v8, v16 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vmul.vx v8, v8, %[k0101] \n"
"vse16.v v8, (%[dst_ar64]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_ar64], %[dst_ar64], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_ar64] "+r"(dst_ar64), // %[dst_ar64]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [k0101] "r"(0x0101)
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17");
}
#endif
#ifdef HAS_ARGBTOAB64ROW_RVV
void ARGBToAB64Row_RVV(const uint8_t* src_argb, uint16_t* dst_ab64, int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m1, ta, ma \n"
"vlseg4e8.v v4, (%[src_argb]) \n"
"vwcvtu.x.x.v v12, v4 \n"
"vwcvtu.x.x.v v10, v5 \n"
"vwcvtu.x.x.v v8, v6 \n"
"vwcvtu.x.x.v v14, v7 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vmul.vx v8, v8, %[k0101] \n"
"vmul.vx v10, v10, %[k0101] \n"
"vmul.vx v12, v12, %[k0101] \n"
"vmul.vx v14, v14, %[k0101] \n"
"vsseg4e16.v v8, (%[dst_ab64]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_ab64], %[dst_ab64], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_ab64] "+r"(dst_ab64), // %[dst_ab64]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [k0101] "r"(0x0101)
: RVV_VL_CLOBBER "memory", "v4", "v5", "v6", "v7", "v8", "v9", "v10",
"v11", "v12", "v13", "v14", "v15");
}
#endif
#ifdef HAS_AR64TOARGBROW_RVV
void AR64ToARGBRow_RVV(const uint16_t* src_ar64, uint8_t* dst_argb, int width) {
int vl;
asm volatile(
"slli %[w], %[w], 2 \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle16.v v8, (%[src_ar64]) \n"
"vnsrl.wi v16, v8, 8 \n"
"vse8.v v16, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[src_ar64], %[src_ar64], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_ar64] "+r"(src_ar64), // %[src_ar64]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17");
}
#endif
#ifdef HAS_AR64TOAB64ROW_RVV
void AR64ToAB64Row_RVV(const uint16_t* src_ar64,
uint16_t* dst_ab64,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e16, m2, ta, ma \n"
"vlseg4e16.v v8, (%[src_ar64]) \n"
"vmv2r.v v16, v12 \n"
"vmv2r.v v18, v10 \n"
"vmv2r.v v20, v8 \n"
"vmv2r.v v22, v14 \n"
"vsseg4e16.v v16, (%[dst_ab64]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 3 \n"
"add %[src_ar64], %[src_ar64], %[vl]\n"
"add %[dst_ab64], %[dst_ab64], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_ar64] "+r"(src_ar64), // %[src_ar64]
[dst_ab64] "+r"(dst_ab64), // %[dst_ab64]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23");
}
#endif
#ifdef HAS_AB64TOARGBROW_RVV
void AB64ToARGBRow_RVV(const uint16_t* src_ab64, uint8_t* dst_argb, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m1, ta, ma \n"
"vlseg4e16.v v8, (%[src_ab64]) \n"
"vnsrl.wi v4, v12, 8 \n"
"vnsrl.wi v5, v10, 8 \n"
"vnsrl.wi v6, v8, 8 \n"
"vnsrl.wi v7, v14, 8 \n"
"vsseg4e8.v v4, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[src_ab64], %[src_ab64], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_ab64] "+r"(src_ab64), // %[src_ab64]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v4", "v5", "v6", "v7", "v8", "v9", "v10",
"v11", "v12", "v13", "v14", "v15");
}
#endif
#ifdef HAS_RAWTOARGBROW_RVV
void RAWToARGBRow_RVV(const uint8_t* src_raw, uint8_t* dst_argb, int width) {
size_t vl, tmp;
asm volatile(
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vlseg3e8.v v16, (%[src_raw]) \n"
"vmv2r.v v8, v20 \n"
"vmv2r.v v10, v18 \n"
"vmv2r.v v12, v16 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_raw], %[src_raw], %[vl] \n"
"add %[src_raw], %[src_raw], %[tmp]\n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"bgtz %[w], 1b \n"
: [src_raw] "+r"(src_raw), // %[src_raw]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21");
}
#endif
#ifdef HAS_RAWTORGBAROW_RVV
void RAWToRGBARow_RVV(const uint8_t* src_raw, uint8_t* dst_rgba, int width) {
size_t vl, tmp;
asm volatile(
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vmv.v.i v8, -1 \n"
"1: \n"
"vlseg3e8.v v16, (%[src_raw]) \n"
"vmv2r.v v10, v20 \n"
"vmv2r.v v12, v18 \n"
"vmv2r.v v14, v16 \n"
"vsseg4e8.v v8, (%[dst_rgba]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_raw], %[src_raw], %[vl] \n"
"add %[src_raw], %[src_raw], %[tmp]\n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_rgba], %[dst_rgba], %[vl]\n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"bgtz %[w], 1b \n"
: [src_raw] "+r"(src_raw), // %[src_raw]
[dst_rgba] "+r"(dst_rgba), // %[dst_rgba]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21");
}
#endif
#ifdef HAS_RAWTORGB24ROW_RVV
void RAWToRGB24Row_RVV(const uint8_t* src_raw, uint8_t* dst_rgb24, int width) {
size_t vl, tmp;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg3e8.v v16, (%[src_raw]) \n"
"vmv2r.v v8, v20 \n"
"vmv2r.v v10, v18 \n"
"vmv2r.v v12, v16 \n"
"vsseg3e8.v v8, (%[dst_rgb24]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[tmp], %[tmp], %[vl] \n"
"add %[src_raw], %[src_raw], %[tmp]\n"
"add %[dst_rgb24], %[dst_rgb24], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_raw] "+r"(src_raw), // %[src_raw]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v16",
"v17", "v18", "v19", "v20", "v21");
}
#endif
#ifdef HAS_ARGBTORAWROW_RVV
void ARGBToRAWRow_RVV(const uint8_t* src_argb, uint8_t* dst_raw, int width) {
size_t vl, tmp;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vmv2r.v v16, v12 \n"
"vmv2r.v v18, v10 \n"
"vmv2r.v v20, v8 \n"
"vsseg3e8.v v16, (%[dst_raw]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[tmp]\n"
"slli %[tmp], %[vl], 1 \n"
"add %[dst_raw], %[dst_raw], %[vl] \n"
"add %[dst_raw], %[dst_raw], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_raw] "+r"(dst_raw), // %[dst_raw]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21");
}
#endif
#ifdef HAS_ARGBTORGB24ROW_RVV
void ARGBToRGB24Row_RVV(const uint8_t* src_argb,
uint8_t* dst_rgb24,
int width) {
size_t vl, tmp;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vsseg3e8.v v8, (%[dst_rgb24]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[tmp]\n"
"slli %[tmp], %[vl], 1 \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"add %[dst_rgb24], %[dst_rgb24], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_ARGBTOABGRROW_RVV
void ARGBToABGRRow_RVV(const uint8_t* src_argb, uint8_t* dst_abgr, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vmv2r.v v16, v12 \n"
"vmv2r.v v18, v10 \n"
"vmv2r.v v20, v8 \n"
"vmv2r.v v22, v14 \n"
"vsseg4e8.v v16, (%[dst_abgr]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"add %[dst_abgr], %[dst_abgr], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_abgr] "+r"(dst_abgr), // %[dst_abgr]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23");
}
#endif
#ifdef HAS_ARGBTOBGRAROW_RVV
void ARGBToBGRARow_RVV(const uint8_t* src_argb, uint8_t* dst_bgra, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e32, m4, ta, ma \n"
"vle32.v v8, (%[src_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"vsrl.vi v12, v8, 16 \n"
"vsll.vi v8, v8, 16 \n"
"vor.vv v8, v8, v12 \n"
"slli %[vl], %[vl], 1 \n"
"vsetvli zero, %[vl], e16, m4, ta, ma \n"
"vsrl.vi v12, v8, 8 \n"
"vsll.vi v8, v8, 8 \n"
"vor.vv v8, v8, v12 \n"
"vse16.v v8, (%[dst_bgra]) \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"add %[dst_bgra], %[dst_bgra], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_bgra] "+r"(dst_bgra), // %[dst_bgra]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_ARGBTORGBAROW_RVV
void ARGBToRGBARow_RVV(const uint8_t* src_argb, uint8_t* dst_rgba, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e32, m4, ta, ma \n"
"vle32.v v8, (%[src_argb]) \n"
"vsrl.vi v12, v8, 24 \n"
"vsll.vi v8, v8, 8 \n"
"vor.vv v8, v8, v12 \n"
"vse32.v v8, (%[dst_rgba]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"add %[dst_rgba], %[dst_rgba], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_rgba] "+r"(dst_rgba), // %[dst_rgba]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_RGBATOARGBROW_RVV
void RGBAToARGBRow_RVV(const uint8_t* src_rgba, uint8_t* dst_argb, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e32, m4, ta, ma \n"
"vle32.v v8, (%[src_rgba]) \n"
"vsrl.vi v12, v8, 8 \n"
"vsll.vi v8, v8, 24 \n"
"vor.vv v8, v8, v12 \n"
"vse32.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_rgba], %[src_rgba], %[vl]\n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_rgba] "+r"(src_rgba), // %[src_rgba]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_RGB24TOARGBROW_RVV
void RGB24ToARGBRow_RVV(const uint8_t* src_rgb24,
uint8_t* dst_argb,
int width) {
size_t vl, tmp;
asm volatile(
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vlseg3e8.v v8, (%[src_rgb24]) \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_rgb24], %[src_rgb24], %[vl]\n"
"add %[src_rgb24], %[src_rgb24], %[tmp]\n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"bgtz %[w], 1b \n"
: [src_rgb24] "+r"(src_rgb24), // %[src_rgb24]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_I444TOARGBROW_RVV
void I444ToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v30, -1 \n"
"1: \n" //
READYUV444 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_u], %[src_u], %[vl] \n"
"add %[src_v], %[src_v], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_I444ALPHATOARGBROW_RVV
void I444AlphaToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
const uint8_t* src_a,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READYUV444 //
"vle8.v v30, (%[src_a]) \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_u], %[src_u], %[vl] \n"
"add %[src_v], %[src_v], %[vl] \n"
"add %[src_a], %[src_a], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[src_a] "+r"(src_a), // %[src_a]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_I444TORGB24ROW_RVV
void I444ToRGB24Row_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_rgb24,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READYUV444 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg3e8.v v24, (%[dst_rgb24]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_u], %[src_u], %[vl] \n"
"add %[src_v], %[src_v], %[vl] \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS);
}
#endif
#ifdef HAS_I422TOARGBROW_RVV
void I422ToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v30, -1 \n"
"1: \n" //
READYUV422 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"srli %[k0101], %[vl], 1 \n"
"add %[src_u], %[src_u], %[k0101] \n"
"add %[src_v], %[src_v], %[k0101] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"li %[k0101], 0x0101 \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_I422ALPHATOARGBROW_RVV
void I422AlphaToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
const uint8_t* src_a,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READYUV422 //
"vle8.v v30, (%[src_a]) \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_a], %[src_a], %[vl] \n"
"srli %[k0101], %[vl], 1 \n"
"add %[src_u], %[src_u], %[k0101] \n"
"add %[src_v], %[src_v], %[k0101] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"li %[k0101], 0x0101 \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[src_a] "+r"(src_a), // %[src_a]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_I422TORGBAROW_RVV
void I422ToRGBARow_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_rgba,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READYUV422 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vmv.v.i v22, -1 \n"
"vsseg4e8.v v22, (%[dst_rgba]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"srli %[k0101], %[vl], 1 \n"
"add %[src_u], %[src_u], %[k0101] \n"
"add %[src_v], %[src_v], %[k0101] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_rgba], %[dst_rgba], %[vl]\n"
"li %[k0101], 0x0101 \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_rgba] "+r"(dst_rgba), // %[dst_rgba]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v22", "v23");
}
#endif
#ifdef HAS_I422TORGB24ROW_RVV
void I422ToRGB24Row_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_rgb24,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READYUV422 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg3e8.v v24, (%[dst_rgb24]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"srli %[k0101], %[vl], 1 \n"
"add %[src_u], %[src_u], %[k0101] \n"
"add %[src_v], %[src_v], %[k0101] \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"li %[k0101], 0x0101 \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS);
}
#endif
#ifdef HAS_I422TOAR30ROW_RVV
void I422ToAR30Row_RVV(const uint8_t* src_y,
const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_ar30,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP_AR30 //
"1: \n"
"addi %[vl], %[w], 1 \n"
"srli %[vl], %[vl], 1 \n"
"vsetvli %[vl], %[vl], e8, mf2, ta, ma \n"
"vle8.v v0, (%[src_u]) \n"
"vle8.v v1, (%[src_v]) \n"
"vwcvtu.x.x.v v2, v0 \n"
"vwcvtu.x.x.v v4, v1 \n"
"vsetvli zero, zero, e16, m1, ta, ma \n"
"vmul.vx v2, v2, %[k0101] \n"
"vmul.vx v4, v4, %[k0101] \n"
"vsetvli %[vl], %[w], e8, m1, ta, ma \n"
"vle8.v v0, (%[src_y]) \n"
"vwcvtu.x.x.v v8, v0 \n"
"vwmulu.vx v12, v2, %[ug] \n"
"vwmaccu.vx v12, %[vg], v4 \n"
"vwmulu.vx v0, v2, %[ub] \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vmul.vx v8, v8, %[k0101] \n"
"vmulhu.vx v8, v8, %[yg] \n"
"vadd.vx v16, v8, %[bg] \n"
"vadd.vv v0, v8, v0 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vwmaccu.vx v8, %[vr], v4 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vssubu.vv v12, v16, v12 \n"
"vssubu.vx v0, v0, %[bb] \n"
"vssubu.vx v8, v8, %[br] \n"
"vsrl.vi v0, v0, 4 \n"
"vsrl.vi v12, v12, 4 \n"
"vsrl.vi v8, v8, 4 \n"
"li %[k0101], 1023 \n"
"vminu.vx v0, v0, %[k0101] \n"
"vminu.vx v12, v12, %[k0101] \n"
"vminu.vx v8, v8, %[k0101] \n"
"vwcvtu.x.x.v v16, v0 \n"
"li %[k0101], 1024 \n"
"vwmaccu.vx v16, %[k0101], v12 \n"
"li %[k0101], 0x0c00 \n"
"vor.vx v8, v8, %[k0101] \n"
"vwcvtu.x.x.v v20, v8 \n"
"vsetvli zero, zero, e32, m4, ta, ma \n"
"vsll.vi v20, v20, 20 \n"
"vor.vv v16, v16, v20 \n"
"vse32.v v16, (%[dst_ar30]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"srli %[k0101], %[vl], 1 \n"
"add %[src_u], %[src_u], %[k0101] \n"
"add %[src_v], %[src_v], %[k0101] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_ar30], %[dst_ar30], %[vl]\n"
"li %[k0101], 0x0101 \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_ar30] "+r"(dst_ar30), // %[dst_ar30]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v2", "v4", "v8", "v9", "v12",
"v13", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23");
}
#endif
#ifdef HAS_I400TOARGBROW_RVV
void I400ToARGBRow_RVV(const uint8_t* src_y,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
const bool is_yb_positive = (yuvconstants->kRGBCoeffBias[4] >= 0);
uint16_t yg = yuvconstants->kRGBCoeffBias[0];
uint16_t yb = is_yb_positive
? (uint16_t)(yuvconstants->kRGBCoeffBias[4] - 32)
: (uint16_t)(-yuvconstants->kRGBCoeffBias[4] + 32);
size_t k0101;
if (is_yb_positive) {
asm volatile(
"csrwi vxrm, 0 \n"
"li %[k0101], 0x0101 \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v20, %[yg] \n"
"vmv.v.x v24, %[yb] \n"
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v0, (%[src_y]) \n"
"vwcvtu.x.x.v v16, v0 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vmul.vx v16, v16, %[k0101] \n"
"vmulhu.vv v16, v16, v20 \n"
"vsaddu.vv v16, v16, v24 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnclipu.wi v8, v16, 6 \n"
"vmv2r.v v10, v8 \n"
"vmv2r.v v12, v8 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[k0101] "=&r"(k0101) // %[k0101]
: [yg] "r"(yg), // %[yg]
[yb] "r"(yb) // %[yb]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v8", "v9", "v10", "v11", "v12",
"v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22",
"v23", "v24", "v25", "v26", "v27");
} else {
asm volatile(
"csrwi vxrm, 0 \n"
"li %[k0101], 0x0101 \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v20, %[yg] \n"
"vmv.v.x v24, %[yb] \n"
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v0, (%[src_y]) \n"
"vwcvtu.x.x.v v16, v0 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vmul.vx v16, v16, %[k0101] \n"
"vmulhu.vv v16, v16, v20 \n"
"vssubu.vv v16, v16, v24 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnclipu.wi v8, v16, 6 \n"
"vmv2r.v v10, v8 \n"
"vmv2r.v v12, v8 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[k0101] "=&r"(k0101) // %[k0101]
: [yg] "r"(yg), // %[yg]
[yb] "r"(yb) // %[yb]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v8", "v9", "v10", "v11", "v12",
"v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22",
"v23", "v24", "v25", "v26", "v27");
}
}
#endif
#ifdef HAS_J400TOARGBROW_RVV
void J400ToARGBRow_RVV(const uint8_t* src_y, uint8_t* dst_argb, int width) {
size_t vl;
asm volatile(
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vle8.v v8, (%[src_y]) \n"
"vmv2r.v v10, v8 \n"
"vmv2r.v v12, v8 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_COPYROW_RVV
void CopyRow_RVV(const uint8_t* src, uint8_t* dst, int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m4, ta, ma \n"
"vle8.v v8, (%[src]) \n"
"vse8.v v8, (%[dst]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src], %[src], %[vl] \n"
"add %[dst], %[dst], %[vl] \n"
"bgtz %[w], 1b \n"
: [src] "+r"(src), // %[src]
[dst] "+r"(dst), // %[dst]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11");
}
#endif
#ifdef HAS_NV12TOARGBROW_RVV
void NV12ToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_uv,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v30, -1 \n"
"1: \n" //
READNV12 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_uv], %[src_uv], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_uv] "+r"(src_uv), // %[src_uv]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_NV12TORGB24ROW_RVV
void NV12ToRGB24Row_RVV(const uint8_t* src_y,
const uint8_t* src_uv,
uint8_t* dst_rgb24,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READNV12 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg3e8.v v24, (%[dst_rgb24]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_uv], %[src_uv], %[vl] \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_uv] "+r"(src_uv), // %[src_uv]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS);
}
#endif
#ifdef HAS_NV21TOARGBROW_RVV
void NV21ToARGBRow_RVV(const uint8_t* src_y,
const uint8_t* src_vu,
uint8_t* dst_argb,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"vsetvli zero, %[w], e8, m2, ta, ma \n"
"vmv.v.i v30, -1 \n"
"1: \n" //
READNV21 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg4e8.v v24, (%[dst_argb]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_vu], %[src_vu], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_vu] "+r"(src_vu), // %[src_vu]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS, "v30", "v31");
}
#endif
#ifdef HAS_NV21TORGB24ROW_RVV
void NV21ToRGB24Row_RVV(const uint8_t* src_y,
const uint8_t* src_vu,
uint8_t* dst_rgb24,
const struct YuvConstants* yuvconstants,
int width) {
size_t vl;
size_t ub, vr, ug, vg;
size_t yg, bb, bg, br;
size_t k0101;
asm volatile( //
YUVTORGB_SETUP //
"1: \n" //
READNV21 //
"sub %[w], %[w], %[vl] \n" //
YUVTORGB //
RGBTORGB8 //
"vsseg3e8.v v24, (%[dst_rgb24]) \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[src_vu], %[src_vu], %[vl] \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_rgb24], %[dst_rgb24], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[src_vu] "+r"(src_vu), // %[src_vu]
[dst_rgb24] "+r"(dst_rgb24), // %[dst_rgb24]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[ub] "=&r"(ub), // %[ub]
[vr] "=&r"(vr), // %[vr]
[ug] "=&r"(ug), // %[ug]
[vg] "=&r"(vg), // %[vg]
[yg] "=&r"(yg), // %[yg]
[bb] "=&r"(bb), // %[bb]
[bg] "=&r"(bg), // %[bg]
[br] "=&r"(br), // %[br]
[k0101] "=&r"(k0101) // %[k0101]
: [yuvconst] "r"(yuvconstants) // %[yuvconst]
: RVV_VL_CLOBBER "memory", YUVTORGB_REGS);
}
#endif
// Bilinear filter [VLEN/8]x2 -> [VLEN/8]x1
#ifdef HAS_INTERPOLATEROW_RVV
void InterpolateRow_RVV(uint8_t* dst_ptr,
const uint8_t* src_ptr,
ptrdiff_t src_stride,
int dst_width,
int source_y_fraction) {
int y1_fraction = source_y_fraction;
int y0_fraction = 256 - y1_fraction;
const uint8_t* src_ptr1 = src_ptr + src_stride;
size_t dst_w = (size_t)dst_width;
size_t vl;
assert(source_y_fraction >= 0);
assert(source_y_fraction < 256);
// Blend 100 / 0 - Copy row unchanged.
if (y1_fraction == 0) {
asm volatile(
"1: \n"
"vsetvli %[vl], %[dst_w], e8, m4, ta, ma\n"
"vle8.v v8, (%[src_ptr]) \n"
"vse8.v v8, (%[dst_ptr]) \n"
"sub %[dst_w], %[dst_w], %[vl] \n"
"add %[src_ptr], %[src_ptr], %[vl] \n"
"add %[dst_ptr], %[dst_ptr], %[vl] \n"
"bgtz %[dst_w], 1b \n"
: [dst_ptr] "+r"(dst_ptr), // %[dst_ptr]
[src_ptr] "+r"(src_ptr), // %[src_ptr]
[dst_w] "+r"(dst_w), // %[dst_w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11");
return;
}
// Blend 50 / 50.
if (y1_fraction == 128) {
asm volatile(
"csrwi vxrm, 0 \n"
"1: \n"
"vsetvli %[vl], %[dst_w], e8, m4, ta, ma\n"
"vle8.v v8, (%[src_ptr]) \n"
"vle8.v v12, (%[src_ptr1]) \n"
"vaaddu.vv v8, v8, v12 \n"
"vse8.v v8, (%[dst_ptr]) \n"
"sub %[dst_w], %[dst_w], %[vl] \n"
"add %[src_ptr], %[src_ptr], %[vl] \n"
"add %[src_ptr1], %[src_ptr1], %[vl]\n"
"add %[dst_ptr], %[dst_ptr], %[vl] \n"
"bgtz %[dst_w], 1b \n"
: [dst_ptr] "+r"(dst_ptr), // %[dst_ptr]
[src_ptr] "+r"(src_ptr), // %[src_ptr]
[src_ptr1] "+r"(src_ptr1), // %[src_ptr1]
[dst_w] "+r"(dst_w), // %[dst_w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13",
"v14", "v15");
return;
}
// General purpose row blend.
asm volatile(
"vsetvli zero, %[dst_w], e16, m4, ta, ma\n"
"vmv.v.x v12, %[c128] \n"
"1: \n"
"vsetvli %[vl], %[dst_w], e8, m2, ta, ma\n"
"vle8.v v16, (%[src_ptr]) \n"
"vmv4r.v v8, v12 \n"
"vwmaccu.vx v8, %[y0_fraction], v16 \n"
"vle8.v v16, (%[src_ptr1]) \n"
"vwmaccu.vx v8, %[y1_fraction], v16 \n"
"vnsrl.wi v16, v8, 8 \n"
"vse8.v v16, (%[dst_ptr]) \n"
"sub %[dst_w], %[dst_w], %[vl] \n"
"add %[src_ptr], %[src_ptr], %[vl] \n"
"add %[src_ptr1], %[src_ptr1], %[vl]\n"
"add %[dst_ptr], %[dst_ptr], %[vl] \n"
"bgtz %[dst_w], 1b \n"
: [dst_ptr] "+r"(dst_ptr), // %[dst_ptr]
[src_ptr] "+r"(src_ptr), // %[src_ptr]
[src_ptr1] "+r"(src_ptr1), // %[src_ptr1]
[dst_w] "+r"(dst_w), // %[dst_w]
[vl] "=&r"(vl) // %[vl]
: [y0_fraction] "r"(y0_fraction), // %[y0_fraction]
[y1_fraction] "r"(y1_fraction), // %[y1_fraction]
[c128] "r"(128) // %[c128]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17");
}
#endif
#ifdef HAS_SPLITRGBROW_RVV
void SplitRGBRow_RVV(const uint8_t* src_rgb,
uint8_t* dst_r,
uint8_t* dst_g,
uint8_t* dst_b,
int width) {
size_t vl, tmp;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg3e8.v v8, (%[src_rgb]) \n"
"vse8.v v8, (%[dst_r]) \n"
"vse8.v v10, (%[dst_g]) \n"
"vse8.v v12, (%[dst_b]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_r], %[dst_r], %[vl] \n"
"add %[dst_g], %[dst_g], %[vl] \n"
"add %[dst_b], %[dst_b], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_rgb], %[src_rgb], %[vl] \n"
"add %[src_rgb], %[src_rgb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_rgb] "+r"(src_rgb), // %[src_rgb]
[dst_r] "+r"(dst_r), // %[dst_r]
[dst_g] "+r"(dst_g), // %[dst_g]
[dst_b] "+r"(dst_b), // %[dst_b]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13");
}
#endif
#ifdef HAS_MERGERGBROW_RVV
void MergeRGBRow_RVV(const uint8_t* src_r,
const uint8_t* src_g,
const uint8_t* src_b,
uint8_t* dst_rgb,
int width) {
size_t vl, tmp;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v8, (%[src_r]) \n"
"vle8.v v10, (%[src_g]) \n"
"vle8.v v12, (%[src_b]) \n"
"vsseg3e8.v v8, (%[dst_rgb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_r], %[src_r], %[vl] \n"
"add %[src_g], %[src_g], %[vl] \n"
"add %[src_b], %[src_b], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[dst_rgb], %[dst_rgb], %[vl] \n"
"add %[dst_rgb], %[dst_rgb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_r] "+r"(src_r), // %[src_r]
[src_g] "+r"(src_g), // %[src_g]
[src_b] "+r"(src_b), // %[src_b]
[dst_rgb] "+r"(dst_rgb), // %[dst_rgb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13");
}
#endif
#ifdef HAS_SPLITARGBROW_RVV
void SplitARGBRow_RVV(const uint8_t* src_argb,
uint8_t* dst_r,
uint8_t* dst_g,
uint8_t* dst_b,
uint8_t* dst_a,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vse8.v v14, (%[dst_a]) \n"
"vse8.v v12, (%[dst_r]) \n"
"vse8.v v10, (%[dst_g]) \n"
"vse8.v v8, (%[dst_b]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_a], %[dst_a], %[vl] \n"
"add %[dst_r], %[dst_r], %[vl] \n"
"add %[dst_g], %[dst_g], %[vl] \n"
"add %[dst_b], %[dst_b], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_r] "+r"(dst_r), // %[dst_r]
[dst_g] "+r"(dst_g), // %[dst_g]
[dst_b] "+r"(dst_b), // %[dst_b]
[dst_a] "+r"(dst_a), // %[dst_a]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_MERGEARGBROW_RVV
void MergeARGBRow_RVV(const uint8_t* src_r,
const uint8_t* src_g,
const uint8_t* src_b,
const uint8_t* src_a,
uint8_t* dst_argb,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v12, (%[src_r]) \n"
"vle8.v v10, (%[src_g]) \n"
"vle8.v v8, (%[src_b]) \n"
"vle8.v v14, (%[src_a]) \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_r], %[src_r], %[vl] \n"
"add %[src_g], %[src_g], %[vl] \n"
"add %[src_b], %[src_b], %[vl] \n"
"add %[src_a], %[src_a], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_r] "+r"(src_r), // %[src_r]
[src_g] "+r"(src_g), // %[src_g]
[src_b] "+r"(src_b), // %[src_b]
[src_a] "+r"(src_a), // %[src_a]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_SPLITXRGBROW_RVV
void SplitXRGBRow_RVV(const uint8_t* src_argb,
uint8_t* dst_r,
uint8_t* dst_g,
uint8_t* dst_b,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vse8.v v12, (%[dst_r]) \n"
"vse8.v v10, (%[dst_g]) \n"
"vse8.v v8, (%[dst_b]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_r], %[dst_r], %[vl] \n"
"add %[dst_g], %[dst_g], %[vl] \n"
"add %[dst_b], %[dst_b], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_r] "+r"(dst_r), // %[dst_r]
[dst_g] "+r"(dst_g), // %[dst_g]
[dst_b] "+r"(dst_b), // %[dst_b]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_MERGEXRGBROW_RVV
void MergeXRGBRow_RVV(const uint8_t* src_r,
const uint8_t* src_g,
const uint8_t* src_b,
uint8_t* dst_argb,
int width) {
size_t vl;
asm volatile(
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vle8.v v12, (%[src_r]) \n"
"vle8.v v10, (%[src_g]) \n"
"vle8.v v8, (%[src_b]) \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_r], %[src_r], %[vl] \n"
"add %[src_g], %[src_g], %[vl] \n"
"add %[src_b], %[src_b], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"bgtz %[w], 1b \n"
: [src_r] "+r"(src_r), // %[src_r]
[src_g] "+r"(src_g), // %[src_g]
[src_b] "+r"(src_b), // %[src_b]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_SPLITUVROW_RVV
void SplitUVRow_RVV(const uint8_t* src_uv,
uint8_t* dst_u,
uint8_t* dst_v,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m4, ta, ma \n"
"vlseg2e8.v v8, (%[src_uv]) \n"
"vse8.v v8, (%[dst_u]) \n"
"vse8.v v12, (%[dst_v]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_u], %[dst_u], %[vl] \n"
"add %[dst_v], %[dst_v], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_uv], %[src_uv], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_uv] "+r"(src_uv), // %[src_uv]
[dst_u] "+r"(dst_u), // %[dst_u]
[dst_v] "+r"(dst_v), // %[dst_v]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_MERGEUVROW_RVV
void MergeUVRow_RVV(const uint8_t* src_u,
const uint8_t* src_v,
uint8_t* dst_uv,
int width) {
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m4, ta, ma \n"
"vle8.v v8, (%[src_u]) \n"
"vle8.v v12, (%[src_v]) \n"
"vsseg2e8.v v8, (%[dst_uv]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_u], %[src_u], %[vl] \n"
"add %[src_v], %[src_v], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_uv], %[dst_uv], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_u] "+r"(src_u), // %[src_u]
[src_v] "+r"(src_v), // %[src_v]
[dst_uv] "+r"(dst_uv), // %[dst_uv]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_SWAPUVROW_RVV
void SwapUVRow_RVV(const uint8_t* src_uv, uint8_t* dst_vu, int width) {
assert(width != 0);
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e16, m4, ta, ma \n"
"vle16.v v8, (%[src_uv]) \n"
"vsrl.vi v12, v8, 8 \n"
"vsll.vi v8, v8, 8 \n"
"vor.vv v8, v8, v12 \n"
"vse16.v v8, (%[dst_vu]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_uv], %[src_uv], %[vl] \n"
"add %[dst_vu], %[dst_vu], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_uv] "+r"(src_uv), // %[src_uv]
[dst_vu] "+r"(dst_vu), // %[dst_vu]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
// ARGB expects first 3 values to contain RGB and 4th value is ignored
#ifdef HAS_ARGBTOYMATRIXROW_RVV
void ARGBToYMatrixRow_RVV(const uint8_t* src_argb,
uint8_t* dst_y,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
size_t vl, tmp;
asm volatile(
"lhu %[tmp], 48(%[c]) \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v8, %[tmp] \n"
"lbu %[vl], 0(%[c]) \n"
"lbu %[tmp], 1(%[c]) \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vmv.v.x v12, %[vl] \n"
"vmv.v.x v14, %[tmp] \n"
"lbu %[vl], 2(%[c]) \n"
"lbu %[tmp], 3(%[c]) \n"
"vmv.v.x v16, %[vl] \n"
"vmv.v.x v18, %[tmp] \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v24, (%[src_argb]) \n"
"vwmulu.vv v20, v24, v12 \n"
"vwmaccu.vv v20, v14, v26 \n"
"vwmaccu.vv v20, v16, v28 \n"
"vwmaccu.vv v20, v18, v30 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vadd.vv v20, v20, v8 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v24, v20, 8 \n"
"vse8.v v24, (%[dst_y]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_y], %[dst_y], %[vl] \n"
"slli %[tmp], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_y] "+r"(dst_y), // %[dst_y]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24",
"v25", "v26", "v27", "v28", "v29", "v30", "v31");
}
#endif
#ifdef HAS_RGBTOYMATRIXROW_RVV
void RGBToYMatrixRow_RVV(const uint8_t* src_rgb,
uint8_t* dst_y,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
size_t vl, tmp;
asm volatile(
"lhu %[tmp], 48(%[c]) \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v8, %[tmp] \n"
"lbu %[vl], 0(%[c]) \n"
"lbu %[tmp], 1(%[c]) \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vmv.v.x v12, %[vl] \n"
"vmv.v.x v14, %[tmp] \n"
"lbu %[vl], 2(%[c]) \n"
"vmv.v.x v16, %[vl] \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg3e8.v v24, (%[src_rgb]) \n"
"vwmulu.vv v20, v28, v16 \n"
"vwmaccu.vv v20, v14, v26 \n"
"vwmaccu.vv v20, v12, v24 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vadd.vv v20, v20, v8 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v18, v20, 8 \n"
"vse8.v v18, (%[dst_y]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_y], %[dst_y], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_rgb], %[src_rgb], %[vl] \n"
"add %[src_rgb], %[src_rgb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_rgb] "+r"(src_rgb), // %[src_rgb]
[dst_y] "+r"(dst_y), // %[dst_y]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24",
"v25", "v26", "v27", "v28", "v29");
}
#endif
#ifdef HAS_ARGBTOUV444MATRIXROW_RVV
void ARGBToUV444MatrixRow_RVV(const uint8_t* src_argb,
uint8_t* dst_u,
uint8_t* dst_v,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
size_t vl, tmp;
asm volatile(
"lh %[tmp], 64(%[c]) \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v16, %[tmp] \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"lb %[vl], 16(%[c]) \n"
"lb %[tmp], 17(%[c]) \n"
"vmv.v.x v0, %[vl] \n"
"vmv.v.x v2, %[tmp] \n"
"lb %[vl], 18(%[c]) \n"
"lb %[tmp], 19(%[c]) \n"
"vmv.v.x v4, %[vl] \n"
"vmv.v.x v6, %[tmp] \n"
"lb %[vl], 32(%[c]) \n"
"lb %[tmp], 33(%[c]) \n"
"vmv.v.x v8, %[vl] \n"
"vmv.v.x v10, %[tmp] \n"
"lb %[vl], 34(%[c]) \n"
"lb %[tmp], 35(%[c]) \n"
"vmv.v.x v12, %[vl] \n"
"vmv.v.x v14, %[tmp] \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v24, (%[src_argb]) \n"
"vwmulsu.vv v20, v0, v24 \n"
"vwmaccsu.vv v20, v2, v26 \n"
"vwmaccsu.vv v20, v4, v28 \n"
"vwmaccsu.vv v20, v6, v30 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vsub.vv v20, v16, v20 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v20, v20, 8 \n"
"vse8.v v20, (%[dst_u]) \n"
"vwmulsu.vv v20, v8, v24 \n"
"vwmaccsu.vv v20, v10, v26 \n"
"vwmaccsu.vv v20, v12, v28 \n"
"vwmaccsu.vv v20, v14, v30 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vsub.vv v20, v16, v20 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v20, v20, 8 \n"
"vse8.v v20, (%[dst_v]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_u], %[dst_u], %[vl] \n"
"add %[dst_v], %[dst_v], %[vl] \n"
"slli %[tmp], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_u] "+r"(dst_u), // %[dst_u]
[dst_v] "+r"(dst_v), // %[dst_v]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
"v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17",
"v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27",
"v28", "v29", "v30", "v31");
}
#endif
#ifdef HAS_ARGBTOUVMATRIXROW_RVV
void ARGBToUVMatrixRow_RVV(const uint8_t* src_argb,
int src_stride_argb,
uint8_t* dst_u,
uint8_t* dst_v,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
const uint8_t* src_argb_0 = src_argb;
const uint8_t* src_argb_1 = src_argb + src_stride_argb;
int w = width >> 1;
if (w > 0) {
size_t w_len = (size_t)w;
size_t vl, tmp;
asm volatile(
"lh %[tmp], 64(%[c]) \n"
"vsetvli zero, %[w_len], e16, m2, ta, ma\n"
"vmv.v.x v8, %[tmp] \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"lb %[vl], 16(%[c]) \n"
"lb %[tmp], 17(%[c]) \n"
"vmv.v.x v10, %[vl] \n"
"vmv.v.x v11, %[tmp] \n"
"lb %[vl], 18(%[c]) \n"
"lb %[tmp], 19(%[c]) \n"
"vmv.v.x v12, %[vl] \n"
"vmv.v.x v13, %[tmp] \n"
"lb %[vl], 32(%[c]) \n"
"lb %[tmp], 33(%[c]) \n"
"vmv.v.x v14, %[vl] \n"
"vmv.v.x v15, %[tmp] \n"
"lb %[vl], 34(%[c]) \n"
"lb %[tmp], 35(%[c]) \n"
"vmv.v.x v16, %[vl] \n"
"vmv.v.x v17, %[tmp] \n"
"1: \n"
"vsetvli %[vl], %[w_len], e8, m1, ta, ma\n"
"vlseg8e8.v v20, (%[src_argb_0]) \n"
"vlseg8e8.v v0, (%[src_argb_1]) \n"
"vwaddu.vv v18, v20, v24 \n"
"vwaddu.wv v18, v18, v0 \n"
"vwaddu.wv v18, v18, v4 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v20, v18, 2 \n"
"vwaddu.vv v18, v21, v25 \n"
"vwaddu.wv v18, v18, v1 \n"
"vwaddu.wv v18, v18, v5 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v21, v18, 2 \n"
"vwaddu.vv v18, v22, v26 \n"
"vwaddu.wv v18, v18, v2 \n"
"vwaddu.wv v18, v18, v6 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v22, v18, 2 \n"
"vwaddu.vv v18, v23, v27 \n"
"vwaddu.wv v18, v18, v3 \n"
"vwaddu.wv v18, v18, v7 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v23, v18, 2 \n"
"vwmulsu.vv v18, v10, v20 \n"
"vwmaccsu.vv v18, v11, v21 \n"
"vwmaccsu.vv v18, v12, v22 \n"
"vwmaccsu.vv v18, v13, v23 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vsub.vv v18, v8, v18 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v24, v18, 8 \n"
"vse8.v v24, (%[dst_u]) \n"
"vwmulsu.vv v18, v14, v20 \n"
"vwmaccsu.vv v18, v15, v21 \n"
"vwmaccsu.vv v18, v16, v22 \n"
"vwmaccsu.vv v18, v17, v23 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vsub.vv v18, v8, v18 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v20, v18, 8 \n"
"vse8.v v20, (%[dst_v]) \n"
"sub %[w_len], %[w_len], %[vl] \n"
"add %[dst_u], %[dst_u], %[vl] \n"
"add %[dst_v], %[dst_v], %[vl] \n"
"slli %[tmp], %[vl], 3 \n"
"add %[src_argb_0], %[src_argb_0], %[tmp]\n"
"add %[src_argb_1], %[src_argb_1], %[tmp]\n"
"bgtz %[w_len], 1b \n"
: [src_argb_0] "+r"(src_argb_0), // %[src_argb_0]
[src_argb_1] "+r"(src_argb_1), // %[src_argb_1]
[dst_u] "+r"(dst_u), // %[dst_u]
[dst_v] "+r"(dst_v), // %[dst_v]
[w_len] "+r"(w_len), // %[w_len]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6",
"v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16",
"v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26",
"v27");
}
if (width & 1) {
uint8_t b = (src_argb_0[0] + src_argb_1[0] + 1) >> 1;
uint8_t g = (src_argb_0[1] + src_argb_1[1] + 1) >> 1;
uint8_t r = (src_argb_0[2] + src_argb_1[2] + 1) >> 1;
uint8_t a = (src_argb_0[3] + src_argb_1[3] + 1) >> 1;
dst_u[0] = (c->kAddUV[0] - (c->kRGBToU[0] * b + c->kRGBToU[1] * g +
c->kRGBToU[2] * r + c->kRGBToU[3] * a)) >>
8;
dst_v[0] = (c->kAddUV[0] - (c->kRGBToV[0] * b + c->kRGBToV[1] * g +
c->kRGBToV[2] * r + c->kRGBToV[3] * a)) >>
8;
}
}
#endif
#ifdef HAS_RGBTOUV444MATRIXROW_RVV
void RGBToUV444MatrixRow_RVV(const uint8_t* src_rgb,
uint8_t* dst_u,
uint8_t* dst_v,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
size_t vl, tmp;
asm volatile(
"lh %[tmp], 64(%[c]) \n"
"vsetvli zero, %[w], e16, m4, ta, ma \n"
"vmv.v.x v16, %[tmp] \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"lb %[vl], 16(%[c]) \n"
"lb %[tmp], 17(%[c]) \n"
"vmv.v.x v0, %[vl] \n"
"vmv.v.x v2, %[tmp] \n"
"lb %[vl], 18(%[c]) \n"
"vmv.v.x v4, %[vl] \n"
"lb %[vl], 32(%[c]) \n"
"lb %[tmp], 33(%[c]) \n"
"vmv.v.x v8, %[vl] \n"
"vmv.v.x v10, %[tmp] \n"
"lb %[vl], 34(%[c]) \n"
"vmv.v.x v12, %[vl] \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg3e8.v v24, (%[src_rgb]) \n"
"vwmulsu.vv v20, v4, v28 \n"
"vwmaccsu.vv v20, v2, v26 \n"
"vwmaccsu.vv v20, v0, v24 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vsub.vv v20, v16, v20 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v20, v20, 8 \n"
"vse8.v v20, (%[dst_u]) \n"
"vwmulsu.vv v20, v12, v28 \n"
"vwmaccsu.vv v20, v10, v26 \n"
"vwmaccsu.vv v20, v8, v24 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vsub.vv v20, v16, v20 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v20, v20, 8 \n"
"vse8.v v20, (%[dst_v]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_u], %[dst_u], %[vl] \n"
"add %[dst_v], %[dst_v], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[src_rgb], %[src_rgb], %[vl] \n"
"add %[src_rgb], %[src_rgb], %[tmp]\n"
"bgtz %[w], 1b \n"
: [src_rgb] "+r"(src_rgb), // %[src_rgb]
[dst_u] "+r"(dst_u), // %[dst_u]
[dst_v] "+r"(dst_v), // %[dst_v]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v8", "v9",
"v10", "v11", "v12", "v13", "v16", "v17", "v18", "v19", "v20", "v21",
"v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29");
}
#endif
#ifdef HAS_RGBTOUVMATRIXROW_RVV
void RGBToUVMatrixRow_RVV(const uint8_t* src_rgb,
int src_stride_rgb,
uint8_t* dst_u,
uint8_t* dst_v,
int width,
const struct ArgbConstants* c) {
assert(width != 0);
const uint8_t* src_rgb_0 = src_rgb;
const uint8_t* src_rgb_1 = src_rgb + src_stride_rgb;
int w = width >> 1;
if (w > 0) {
size_t w_len = (size_t)w;
size_t vl, tmp;
asm volatile(
"lh %[tmp], 64(%[c]) \n"
"vsetvli zero, %[w_len], e16, m2, ta, ma\n"
"vmv.v.x v8, %[tmp] \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"lb %[vl], 16(%[c]) \n"
"lb %[tmp], 17(%[c]) \n"
"vmv.v.x v10, %[vl] \n"
"vmv.v.x v11, %[tmp] \n"
"lb %[vl], 18(%[c]) \n"
"vmv.v.x v12, %[vl] \n"
"lb %[vl], 32(%[c]) \n"
"lb %[tmp], 33(%[c]) \n"
"vmv.v.x v14, %[vl] \n"
"vmv.v.x v15, %[tmp] \n"
"lb %[vl], 34(%[c]) \n"
"vmv.v.x v16, %[vl] \n"
"1: \n"
"vsetvli %[vl], %[w_len], e8, m1, ta, ma\n"
"vlseg6e8.v v20, (%[src_rgb_0]) \n"
"vlseg6e8.v v0, (%[src_rgb_1]) \n"
"vwaddu.vv v18, v20, v23 \n"
"vwaddu.wv v18, v18, v0 \n"
"vwaddu.wv v18, v18, v3 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v20, v18, 2 \n"
"vwaddu.vv v18, v21, v24 \n"
"vwaddu.wv v18, v18, v1 \n"
"vwaddu.wv v18, v18, v4 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v21, v18, 2 \n"
"vwaddu.vv v18, v22, v25 \n"
"vwaddu.wv v18, v18, v2 \n"
"vwaddu.wv v18, v18, v5 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vadd.vi v18, v18, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v22, v18, 2 \n"
"vwmulsu.vv v18, v12, v22 \n"
"vwmaccsu.vv v18, v11, v21 \n"
"vwmaccsu.vv v18, v10, v20 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vsub.vv v18, v8, v18 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v24, v18, 8 \n"
"vse8.v v24, (%[dst_u]) \n"
"vwmulsu.vv v18, v16, v22 \n"
"vwmaccsu.vv v18, v15, v21 \n"
"vwmaccsu.vv v18, v14, v20 \n"
"vsetvli zero, zero, e16, m2, ta, ma \n"
"vsub.vv v18, v8, v18 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wi v20, v18, 8 \n"
"vse8.v v20, (%[dst_v]) \n"
"sub %[w_len], %[w_len], %[vl] \n"
"add %[dst_u], %[dst_u], %[vl] \n"
"add %[dst_v], %[dst_v], %[vl] \n"
"slli %[tmp], %[vl], 1 \n"
"add %[tmp], %[tmp], %[vl] \n"
"slli %[tmp], %[tmp], 1 \n"
"add %[src_rgb_0], %[src_rgb_0], %[tmp]\n"
"add %[src_rgb_1], %[src_rgb_1], %[tmp]\n"
"bgtz %[w_len], 1b \n"
: [src_rgb_0] "+r"(src_rgb_0), // %[src_rgb_0]
[src_rgb_1] "+r"(src_rgb_1), // %[src_rgb_1]
[dst_u] "+r"(dst_u), // %[dst_u]
[dst_v] "+r"(dst_v), // %[dst_v]
[w_len] "+r"(w_len), // %[w_len]
[vl] "=&r"(vl), // %[vl]
[tmp] "=&r"(tmp) // %[tmp]
: [c] "r"(c) // %[c]
: RVV_VL_CLOBBER "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v8",
"v9", "v10", "v11", "v12", "v14", "v15", "v16", "v18", "v19", "v20",
"v21", "v22", "v23", "v24", "v25");
}
if (width & 1) {
uint8_t b = (src_rgb_0[0] + src_rgb_1[0] + 1) >> 1;
uint8_t g = (src_rgb_0[1] + src_rgb_1[1] + 1) >> 1;
uint8_t r = (src_rgb_0[2] + src_rgb_1[2] + 1) >> 1;
dst_u[0] = (c->kAddUV[0] -
(c->kRGBToU[0] * b + c->kRGBToU[1] * g + c->kRGBToU[2] * r)) >>
8;
dst_v[0] = (c->kAddUV[0] -
(c->kRGBToV[0] * b + c->kRGBToV[1] * g + c->kRGBToV[2] * r)) >>
8;
}
}
#endif
// Blend src_argb over src_argb1 and store to dst_argb.
// dst_argb may be src_argb or src_argb1.
// src_argb: RGB values have already been pre-multiplied by the a.
#ifdef HAS_ARGBBLENDROW_RVV
void ARGBBlendRow_RVV(const uint8_t* src_argb,
const uint8_t* src_argb1,
uint8_t* dst_argb,
int width) {
size_t vl;
asm volatile(
"vsetvli %[vl], zero, e8, m2, ta, ma \n"
"vmv.v.i v14, -1 \n"
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v16, (%[src_argb]) \n"
"vlseg4e8.v v24, (%[src_argb1]) \n"
"vmulhu.vv v8, v24, v22 \n"
"vmulhu.vv v10, v26, v22 \n"
"vmulhu.vv v12, v28, v22 \n"
"vsub.vv v8, v24, v8 \n"
"vsub.vv v10, v26, v10 \n"
"vsub.vv v12, v28, v12 \n"
"vsaddu.vv v8, v8, v16 \n"
"vsaddu.vv v10, v10, v18 \n"
"vsaddu.vv v12, v12, v20 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"add %[src_argb1], %[src_argb1], %[vl]\n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[src_argb1] "+r"(src_argb1), // %[src_argb1]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24",
"v25", "v26", "v27", "v28", "v29", "v30", "v31");
}
#endif
#ifdef HAS_BLENDPLANEROW_RVV
void BlendPlaneRow_RVV(const uint8_t* src0,
const uint8_t* src1,
const uint8_t* alpha,
uint8_t* dst,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v16, (%[src0]) \n"
"vle8.v v18, (%[src1]) \n"
"vle8.v v20, (%[alpha]) \n"
"vrsub.vx v22, v20, %[k255] \n"
"vwmulu.vv v8, v20, v16 \n"
"vwmaccu.vv v8, v22, v18 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vadd.vx v8, v8, %[k255] \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v16, v8, 8 \n"
"vse8.v v16, (%[dst]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src0], %[src0], %[vl] \n"
"add %[src1], %[src1], %[vl] \n"
"add %[alpha], %[alpha], %[vl] \n"
"add %[dst], %[dst], %[vl] \n"
"bgtz %[w], 1b \n"
: [src0] "+r"(src0), // %[src0]
[src1] "+r"(src1), // %[src1]
[alpha] "+r"(alpha), // %[alpha]
[dst] "+r"(dst), // %[dst]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [k255] "r"(255)
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17", "v18",
"v19", "v20", "v21", "v22", "v23");
}
#endif
// Attenuate: (f * a + 255) >> 8
#ifdef HAS_ARGBATTENUATEROW_RVV
void ARGBAttenuateRow_RVV(const uint8_t* src_argb,
uint8_t* dst_argb,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vlseg4e8.v v8, (%[src_argb]) \n"
"vwmulu.vv v16, v8, v14 \n"
"vwmulu.vv v20, v10, v14 \n"
"vwmulu.vv v24, v12, v14 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vadd.vx v16, v16, %[k255] \n"
"vadd.vx v20, v20, %[k255] \n"
"vadd.vx v24, v24, %[k255] \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v8, v16, 8 \n"
"vnsrl.wi v10, v20, 8 \n"
"vnsrl.wi v12, v24, 8 \n"
"vsseg4e8.v v8, (%[dst_argb]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"add %[dst_argb], %[dst_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [k255] "r"(255)
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24",
"v25", "v26", "v27");
}
#endif
#ifdef HAS_ARGBMULTIPLYROW_RVV
void ARGBMultiplyRow_RVV(const uint8_t* src_argb,
const uint8_t* src_argb1,
uint8_t* dst_argb,
int width) {
assert(width != 0);
size_t w = (size_t)width * 4;
size_t vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v8, (%[src0]) \n"
"vle8.v v10, (%[src1]) \n"
"vwmulu.vv v12, v8, v10 \n"
"vwaddu.wx v12, v12, %[k128] \n"
"vnsrl.wi v8, v12, 8 \n"
"vse8.v v8, (%[dst]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src0], %[src0], %[vl] \n"
"add %[src1], %[src1], %[vl] \n"
"add %[dst], %[dst], %[vl] \n"
"bgtz %[w], 1b \n"
: [src0] "+r"(src_argb), // %[src0]
[src1] "+r"(src_argb1), // %[src1]
[dst] "+r"(dst_argb), // %[dst]
[w] "+r"(w), // %[w]
[vl] "=&r"(vl) // %[vl]
: [k128] "r"(128) // %[k128]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15");
}
#endif
#ifdef HAS_ARGBEXTRACTALPHAROW_RVV
void ARGBExtractAlphaRow_RVV(const uint8_t* src_argb,
uint8_t* dst_a,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e16, m4, ta, ma \n"
"vle32.v v8, (%[src_argb]) \n"
"vnsrl.wi v16, v8, 16 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wi v8, v16, 8 \n"
"vse8.v v8, (%[dst_a]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_a], %[dst_a], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[src_argb], %[src_argb], %[vl]\n"
"bgtz %[w], 1b \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[dst_a] "+r"(dst_a), // %[dst_a]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
:
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v18", "v19");
}
#endif
#ifdef HAS_ARGBCOPYYTOALPHAROW_RVV
void ARGBCopyYToAlphaRow_RVV(const uint8_t* src, uint8_t* dst, int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e32, m8, ta, ma \n"
"vle8.v v16, (%[src]) \n"
"vle32.v v8, (%[dst]) \n"
"vzext.vf4 v24, v16 \n"
"vand.vx v8, v8, %[mask] \n"
"vsll.vi v24, v24, 24 \n"
"vor.vv v8, v8, v24 \n"
"vse32.v v8, (%[dst]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src], %[src], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[dst], %[dst], %[vl] \n"
"bgtz %[w], 1b \n"
: [src] "+r"(src), // %[src]
[dst] "+r"(dst), // %[dst]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [mask] "r"(0x00ffffffu) // %[mask]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17", "v24", "v25", "v26", "v27", "v28", "v29", "v30",
"v31");
}
#endif
#ifdef HAS_CONVERT16TO8ROW_RVV
void Convert16To8Row_RVV(const uint16_t* src_y,
uint8_t* dst_y,
int scale,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle16.v v8, (%[src_y]) \n"
"vnsrl.wx v16, v8, %[shift] \n"
"vse8.v v16, (%[dst_y]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_y], %[dst_y], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_y], %[src_y], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_y] "+r"(dst_y), // %[dst_y]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [shift] "r"(__builtin_clz((int32_t)scale) - 15) // %[shift]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17");
}
#endif
#ifdef HAS_CONVERT8TO16ROW_RVV
// Use scale to convert lsb formats to msb, depending how many bits there are:
// 512 = 9 bits
// 1024 = 10 bits
// 4096 = 12 bits
// 65536 = 16 bits
void Convert8To16Row_RVV(const uint8_t* src_y,
uint16_t* dst_y,
int bits,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e8, m2, ta, ma \n"
"vle8.v v16, (%[src_y]) \n"
"vwcvtu.x.x.v v8, v16 \n"
"vsetvli zero, zero, e16, m4, ta, ma \n"
"vmul.vx v8, v8, %[k0101] \n"
"vsrl.vx v8, v8, %[shift] \n"
"vse16.v v8, (%[dst_y]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[src_y], %[src_y], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[dst_y], %[dst_y], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_y] "+r"(dst_y), // %[dst_y]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [shift] "r"(16 - bits), [k0101] "r"(0x0101)
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17");
}
#endif
#ifdef HAS_MULTIPLYROW_16_RVV
void MultiplyRow_16_RVV(const uint16_t* src_y,
uint16_t* dst_y,
int scale,
int width) {
int vl;
asm volatile(
"1: \n"
"vsetvli %[vl], %[w], e16, m4, ta, ma \n"
"vle16.v v8, (%[src_y]) \n"
"vmul.vx v8, v8, %[scale] \n"
"vse16.v v8, (%[dst_y]) \n"
"sub %[w], %[w], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_y], %[src_y], %[vl] \n"
"add %[dst_y], %[dst_y], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_y] "+r"(dst_y), // %[dst_y]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [scale] "r"(scale) // %[scale]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11");
}
#endif
#ifdef HAS_HALFROW_16TO8_RVV
void HalfRow_16To8_RVV(const uint16_t* src_uv,
ptrdiff_t src_uv_stride,
uint8_t* dst_uv,
int scale,
int width) {
int vl;
asm volatile(
"slli %[src_uv1], %[src_uv1], 1 \n"
"add %[src_uv1], %[src_uv], %[src_uv1]\n"
"csrwi vxrm, 0 \n"
"1: \n"
"vsetvli %[vl], %[w], e16, m4, ta, ma \n"
"vle16.v v8, (%[src_uv]) \n"
"vle16.v v12, (%[src_uv1]) \n"
"vaaddu.vv v8, v8, v12 \n"
"vsetvli zero, zero, e8, m2, ta, ma \n"
"vnsrl.wx v16, v8, %[shift] \n"
"vse8.v v16, (%[dst_uv]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_uv], %[dst_uv], %[vl] \n"
"slli %[vl], %[vl], 1 \n"
"add %[src_uv], %[src_uv], %[vl] \n"
"add %[src_uv1], %[src_uv1], %[vl] \n"
"bgtz %[w], 1b \n"
: [src_uv] "+r"(src_uv), // %[src_uv]
[src_uv1] "+r"(src_uv_stride), // %[src_uv1]
[dst_uv] "+r"(dst_uv), // %[dst_uv]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [shift] "r"(__builtin_clz((int32_t)scale) - 15) // %[shift]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v12", "v13", "v14",
"v15", "v16", "v17");
}
#endif
#ifdef HAS_HALFWIDTHROW_16TO8_RVV
void HalfWidthRow_16To8_RVV(const uint16_t* src_uv,
ptrdiff_t src_uv_stride,
uint8_t* dst_uv,
int scale,
int width) {
int vl;
asm volatile(
"slli %[t], %[t], 1 \n"
"add %[t], %[s], %[t] \n"
"1: \n"
"vsetvli %[vl], %[w], e16, m2, ta, ma \n"
"vlseg2e16.v v16, (%[s]) \n"
"vlseg2e16.v v20, (%[t]) \n"
"vwaddu.vx v8, v16, %[c2] \n"
"vwaddu.wv v8, v8, v18 \n"
"vwaddu.wv v8, v8, v20 \n"
"vwaddu.wv v8, v8, v22 \n"
"vnsrl.wi v16, v8, 2 \n"
"vsetvli zero, zero, e8, m1, ta, ma \n"
"vnsrl.wx v8, v16, %[shift] \n"
"vse8.v v8, (%[dst_uv]) \n"
"sub %[w], %[w], %[vl] \n"
"add %[dst_uv], %[dst_uv], %[vl] \n"
"slli %[vl], %[vl], 2 \n"
"add %[s], %[s], %[vl] \n"
"add %[t], %[t], %[vl] \n"
"bgtz %[w], 1b \n"
: [s] "+r"(src_uv), // %[s]
[t] "+r"(src_uv_stride), // %[t]
[dst_uv] "+r"(dst_uv), // %[dst_uv]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl) // %[vl]
: [shift] "r"(__builtin_clz((int32_t)scale) - 15), // %[shift]
[c2] "r"(2) // %[c2]
: RVV_VL_CLOBBER "memory", "v8", "v9", "v10", "v11", "v16", "v17", "v18",
"v19", "v20", "v21", "v22", "v23");
}
#endif
#ifdef HAS_ARGBMIRRORROW_RVV
void ARGBMirrorRow_RVV(const uint8_t* src, uint8_t* dst, int width) {
int vl;
ptrdiff_t byte_vl;
src += (ptrdiff_t)width * 4;
asm volatile(
"vsetvli %[vl], %[w], e32, m8, ta, ma \n"
"slli %[byte_vl], %[vl], 2 \n"
"vid.v v16 \n"
"addi %[vl], %[vl], -1 \n"
"vrsub.vx v16, v16, %[vl] \n"
"addi %[vl], %[vl], 1 \n"
"sub %[w], %[w], %[vl] \n"
"bltz %[w], 2f \n"
"1: \n"
"sub %[src], %[src], %[byte_vl] \n"
"vle32.v v8, (%[src]) \n"
"vrgather.vv v0, v8, v16 \n"
"vse32.v v0, (%[dst]) \n"
"add %[dst], %[dst], %[byte_vl] \n"
"sub %[w], %[w], %[vl] \n"
"bgez %[w], 1b \n"
"2: \n"
"add %[w], %[w], %[vl] \n"
"beqz %[w], 3f \n"
"vsetvli %[vl], %[w], e32, m8, ta, ma \n"
"slli %[byte_vl], %[vl], 2 \n"
"vid.v v16 \n"
"addi %[vl], %[vl], -1 \n"
"vrsub.vx v16, v16, %[vl] \n"
"sub %[src], %[src], %[byte_vl] \n"
"vle32.v v8, (%[src]) \n"
"vrgather.vv v0, v8, v16 \n"
"vse32.v v0, (%[dst]) \n"
"3: \n"
: [src] "+r"(src), // %[src]
[dst] "+r"(dst), // %[dst]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[byte_vl] "=&r"(byte_vl) // %[byte_vl]
:
: RVV_VL_CLOBBER "vtype", "memory", "v0", "v1", "v2", "v3", "v4", "v5",
"v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16",
"v17", "v18", "v19", "v20", "v21", "v22", "v23");
}
#endif // HAS_ARGBMIRRORROW_RVV
#ifdef HAS_MIRRORUVROW_RVV
void MirrorUVRow_RVV(const uint8_t* src_uv, uint8_t* dst_uv, int width) {
int vl;
ptrdiff_t byte_vl;
src_uv += (ptrdiff_t)width * 2;
asm volatile(
"vsetvli %[vl], %[w], e16, m8, ta, ma \n"
"slli %[byte_vl], %[vl], 1 \n"
"vid.v v16 \n"
"addi %[vl], %[vl], -1 \n"
"vrsub.vx v16, v16, %[vl] \n"
"addi %[vl], %[vl], 1 \n"
"sub %[w], %[w], %[vl] \n"
"bltz %[w], 2f \n"
"1: \n"
"sub %[src], %[src], %[byte_vl] \n"
"vle16.v v8, (%[src]) \n"
"vrgather.vv v0, v8, v16 \n"
"vse16.v v0, (%[dst]) \n"
"add %[dst], %[dst], %[byte_vl] \n"
"sub %[w], %[w], %[vl] \n"
"bgez %[w], 1b \n"
"2: \n"
"add %[w], %[w], %[vl] \n"
"beqz %[w], 3f \n"
"vsetvli %[vl], %[w], e16, m8, ta, ma \n"
"slli %[byte_vl], %[vl], 1 \n"
"vid.v v16 \n"
"addi %[vl], %[vl], -1 \n"
"vrsub.vx v16, v16, %[vl] \n"
"sub %[src], %[src], %[byte_vl] \n"
"vle16.v v8, (%[src]) \n"
"vrgather.vv v0, v8, v16 \n"
"vse16.v v0, (%[dst]) \n"
"3: \n"
: [src] "+r"(src_uv), // %[src]
[dst] "+r"(dst_uv), // %[dst]
[w] "+r"(width), // %[w]
[vl] "=&r"(vl), // %[vl]
[byte_vl] "=&r"(byte_vl) // %[byte_vl]
:
: RVV_VL_CLOBBER "vtype", "memory", "v0", "v1", "v2", "v3", "v4", "v5",
"v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16",
"v17", "v18", "v19", "v20", "v21", "v22", "v23");
}
#endif // HAS_MIRRORUVROW_RVV
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif
#endif // !defined(LIBYUV_DISABLE_RVV) && defined(__riscv_vector)
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