/* * Copyright 2024 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. */ #include "libyuv/scale_row.h" #ifdef __cplusplus namespace libyuv { extern "C" { #endif #if !defined(LIBYUV_DISABLE_SME) && defined(CLANG_HAS_SME) && \ defined(__aarch64__) __arm_locally_streaming void ScaleRowDown2_SME(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cntb %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.b \n" "ld2b {z0.b, z1.b}, p0/z, [%[src_ptr]] \n" "incb %[src_ptr], all, mul #2 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1b {z1.b}, p0, [%[dst_ptr]] \n" "incb %[dst_ptr] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.b, wzr, %w[dst_width] \n" "ld2b {z0.b, z1.b}, p0/z, [%[src_ptr]] \n" "st1b {z1.b}, p0, [%[dst_ptr]] \n" "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } __arm_locally_streaming void ScaleRowDown2_16_SME(const uint16_t* src_ptr, ptrdiff_t src_stride, uint16_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cnth %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.h \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_ptr]] \n" "incb %[src_ptr], all, mul #2 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1h {z1.h}, p0, [%[dst_ptr]] \n" "incb %[dst_ptr] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_ptr]] \n" "st1h {z1.h}, p0, [%[dst_ptr]] \n" "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } __arm_locally_streaming void ScaleRowDown2Linear_SME(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cntb %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.b \n" "ld2b {z0.b, z1.b}, p0/z, [%[src_ptr]] \n" "incb %[src_ptr], all, mul #2 \n" "urhadd z0.b, p0/m, z0.b, z1.b \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1b {z0.b}, p0, [%[dst_ptr]] \n" "incb %[dst_ptr] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.b, wzr, %w[dst_width] \n" "ld2b {z0.b, z1.b}, p0/z, [%[src_ptr]] \n" "urhadd z0.b, p0/m, z0.b, z1.b \n" "st1b {z0.b}, p0, [%[dst_ptr]] \n" "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } __arm_locally_streaming void ScaleRowDown2Linear_16_SME(const uint16_t* src_ptr, ptrdiff_t src_stride, uint16_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cnth %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.h \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_ptr]] \n" "incb %[src_ptr], all, mul #2 \n" "urhadd z0.h, p0/m, z0.h, z1.h \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1h {z0.h}, p0, [%[dst_ptr]] \n" "incb %[dst_ptr] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_ptr]] \n" "urhadd z0.h, p0/m, z0.h, z1.h \n" "st1h {z0.h}, p0, [%[dst_ptr]] \n" "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } #define SCALEROWDOWN2BOX_SVE \ "ld2b {z0.b, z1.b}, p0/z, [%[src_ptr]] \n" \ "ld2b {z2.b, z3.b}, p0/z, [%[src2_ptr]] \n" \ "incb %[src_ptr], all, mul #2 \n" \ "incb %[src2_ptr], all, mul #2 \n" \ "uaddlb z4.h, z0.b, z1.b \n" \ "uaddlt z5.h, z0.b, z1.b \n" \ "uaddlb z6.h, z2.b, z3.b \n" \ "uaddlt z7.h, z2.b, z3.b \n" \ "add z4.h, z4.h, z6.h \n" \ "add z5.h, z5.h, z7.h \n" \ "rshrnb z0.b, z4.h, #2 \n" \ "rshrnt z0.b, z5.h, #2 \n" \ "subs %w[dst_width], %w[dst_width], %w[vl] \n" \ "st1b {z0.b}, p0, [%[dst_ptr]] \n" \ "incb %[dst_ptr] \n" __arm_locally_streaming void ScaleRowDown2Box_SME(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. const uint8_t* src2_ptr = src_ptr + src_stride; int vl; asm volatile( "cntb %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.b \n" "1: \n" // SCALEROWDOWN2BOX_SVE "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.b, wzr, %w[dst_width] \n" // SCALEROWDOWN2BOX_SVE "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [src2_ptr] "+r"(src2_ptr), // %[src2_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "z2", "z3", "z4", "z5", "z6", "z7", "p0"); } #undef SCALEROWDOWN2BOX_SVE #define SCALEROWDOWN2BOX_16_SVE \ "ld2h {z0.h, z1.h}, p0/z, [%[src_ptr]] \n" \ "ld2h {z2.h, z3.h}, p0/z, [%[src2_ptr]] \n" \ "incb %[src_ptr], all, mul #2 \n" \ "incb %[src2_ptr], all, mul #2 \n" \ "uaddlb z4.s, z0.h, z1.h \n" \ "uaddlt z5.s, z0.h, z1.h \n" \ "uaddlb z6.s, z2.h, z3.h \n" \ "uaddlt z7.s, z2.h, z3.h \n" \ "add z4.s, z4.s, z6.s \n" \ "add z5.s, z5.s, z7.s \n" \ "rshrnb z0.h, z4.s, #2 \n" \ "rshrnt z0.h, z5.s, #2 \n" \ "subs %w[dst_width], %w[dst_width], %w[vl] \n" \ "st1h {z0.h}, p0, [%[dst_ptr]] \n" \ "incb %[dst_ptr] \n" __arm_locally_streaming void ScaleRowDown2Box_16_SME(const uint16_t* src_ptr, ptrdiff_t src_stride, uint16_t* dst, int dst_width) { // Streaming-SVE only, no use of ZA tile. const uint16_t* src2_ptr = src_ptr + src_stride; int vl; asm volatile( "cnth %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.h \n" "1: \n" // SCALEROWDOWN2BOX_16_SVE "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" // SCALEROWDOWN2BOX_16_SVE "99: \n" : [src_ptr] "+r"(src_ptr), // %[src_ptr] [src2_ptr] "+r"(src2_ptr), // %[src2_ptr] [dst_ptr] "+r"(dst), // %[dst_ptr] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "z2", "z3", "z4", "z5", "z6", "z7", "p0"); } #undef SCALEROWDOWN2BOX_16_SVE __arm_locally_streaming void ScaleUVRowDown2_SME(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cnth %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.b \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_uv]] \n" "incb %[src_uv], all, mul #2 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1h {z1.h}, p0, [%[dst_uv]] \n" "incb %[dst_uv] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_uv]] \n" "st1h {z1.h}, p0, [%[dst_uv]] \n" "99: \n" : [src_uv] "+r"(src_uv), // %[src_uv] [dst_uv] "+r"(dst_uv), // %[dst_uv] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } __arm_locally_streaming void ScaleUVRowDown2Linear_SME(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cnth %x[vl] \n" "ptrue p1.b \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.h \n" "1: \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_uv]] \n" "incb %[src_uv], all, mul #2 \n" "urhadd z0.b, p1/m, z0.b, z1.b \n" "st1h {z0.h}, p0, [%[dst_uv]] \n" "incb %[dst_uv], all, mul #1 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" "ld2h {z0.h, z1.h}, p0/z, [%[src_uv]] \n" "urhadd z0.b, p1/m, z0.b, z1.b \n" "st1h {z0.h}, p0, [%[dst_uv]] \n" "99: \n" : [src_uv] "+r"(src_uv), // %[src_uv] [dst_uv] "+r"(dst_uv), // %[dst_uv] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "z0", "z1", "p0", "p1"); } #define SCALEUVROWDOWN2BOX_SVE \ "ld2h {z0.h, z1.h}, p0/z, [%[src_uv]] \n" \ "ld2h {z2.h, z3.h}, p0/z, [%[src2_uv]] \n" \ "incb %[src_uv], all, mul #2 \n" \ "incb %[src2_uv], all, mul #2 \n" \ "uaddlb z4.h, z0.b, z1.b \n" \ "uaddlt z5.h, z0.b, z1.b \n" \ "uaddlb z6.h, z2.b, z3.b \n" \ "uaddlt z7.h, z2.b, z3.b \n" \ "add z4.h, z4.h, z6.h \n" \ "add z5.h, z5.h, z7.h \n" \ "rshrnb z0.b, z4.h, #2 \n" \ "rshrnt z0.b, z5.h, #2 \n" \ "st1h {z0.h}, p0, [%[dst_uv]] \n" \ "incb %[dst_uv], all, mul #1 \n" __arm_locally_streaming void ScaleUVRowDown2Box_SME(const uint8_t* src_uv, ptrdiff_t src_stride, uint8_t* dst_uv, int dst_width) { // Streaming-SVE only, no use of ZA tile. const uint8_t* src2_uv = src_uv + src_stride; int vl; asm volatile( "cnth %x[vl] \n" "ptrue p1.b \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.h \n" "1: \n" // SCALEUVROWDOWN2BOX_SVE "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.h, wzr, %w[dst_width] \n" // SCALEUVROWDOWN2BOX_SVE "99: \n" : [src_uv] "+r"(src_uv), // %[src_uv] [src2_uv] "+r"(src2_uv), // %[src2_uv] [dst_uv] "+r"(dst_uv), // %[dst_uv] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "z0", "z1", "z2", "z3", "z4", "z5", "z6", "z7", "p0", "p1"); } #undef SCALEUVROWDOWN2BOX_SVE __arm_locally_streaming void ScaleARGBRowDown2_SME(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cntw %x[vl] \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "1: \n" "ptrue p0.b \n" "ld2w {z0.s, z1.s}, p0/z, [%[src_argb]] \n" "incb %[src_argb], all, mul #2 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "st1w {z1.s}, p0, [%[dst_argb]] \n" "incb %[dst_argb] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.s, wzr, %w[dst_width] \n" "ld2w {z0.s, z1.s}, p0/z, [%[src_argb]] \n" "st1w {z1.s}, p0, [%[dst_argb]] \n" "99: \n" : [src_argb] "+r"(src_argb), // %[src_argb] [dst_argb] "+r"(dst_argb), // %[dst_argb] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0"); } __arm_locally_streaming void ScaleARGBRowDown2Linear_SME( const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { // Streaming-SVE only, no use of ZA tile. (void)src_stride; int vl; asm volatile( "cntw %x[vl] \n" "ptrue p1.b \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.s \n" "1: \n" "ld2w {z0.s, z1.s}, p0/z, [%[src_argb]] \n" "incb %[src_argb], all, mul #2 \n" "urhadd z0.b, p1/m, z0.b, z1.b \n" "st1w {z0.s}, p0, [%[dst_argb]] \n" "incb %[dst_argb], all, mul #1 \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.s, wzr, %w[dst_width] \n" "ld2w {z0.s, z1.s}, p0/z, [%[src_argb]] \n" "urhadd z0.b, p1/m, z0.b, z1.b \n" "st1w {z0.s}, p0, [%[dst_argb]] \n" "99: \n" : [src_argb] "+r"(src_argb), // %[src_argb] [dst_argb] "+r"(dst_argb), // %[dst_argb] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "p0", "p1"); } #define SCALEARGBROWDOWN2BOX_SVE \ "ld2w {z0.s, z1.s}, p0/z, [%[src_argb]] \n" \ "ld2w {z2.s, z3.s}, p0/z, [%[src2_argb]] \n" \ "incb %[src_argb], all, mul #2 \n" \ "incb %[src2_argb], all, mul #2 \n" \ "uaddlb z4.h, z0.b, z1.b \n" \ "uaddlt z5.h, z0.b, z1.b \n" \ "uaddlb z6.h, z2.b, z3.b \n" \ "uaddlt z7.h, z2.b, z3.b \n" \ "add z4.h, z4.h, z6.h \n" \ "add z5.h, z5.h, z7.h \n" \ "rshrnb z0.b, z4.h, #2 \n" \ "rshrnt z0.b, z5.h, #2 \n" \ "st1w {z0.s}, p0, [%[dst_argb]] \n" \ "incb %[dst_argb], all, mul #1 \n" __arm_locally_streaming void ScaleARGBRowDown2Box_SME(const uint8_t* src_argb, ptrdiff_t src_stride, uint8_t* dst_argb, int dst_width) { // Streaming-SVE only, no use of ZA tile. const uint8_t* src2_argb = src_argb + src_stride; int vl; asm volatile( "cntw %x[vl] \n" "ptrue p1.b \n" "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.lt 2f \n" "ptrue p0.s \n" "1: \n" // SCALEARGBROWDOWN2BOX_SVE "subs %w[dst_width], %w[dst_width], %w[vl] \n" "b.ge 1b \n" "2: \n" "adds %w[dst_width], %w[dst_width], %w[vl] \n" "b.eq 99f \n" "whilelt p0.s, wzr, %w[dst_width] \n" // SCALEARGBROWDOWN2BOX_SVE "99: \n" : [src_argb] "+r"(src_argb), // %[src_argb] [src2_argb] "+r"(src2_argb), // %[src2_argb] [dst_argb] "+r"(dst_argb), // %[dst_argb] [dst_width] "+r"(dst_width), // %[dst_width] [vl] "=r"(vl) // %[vl] : : "memory", "cc", "z0", "z1", "z2", "z3", "z4", "z5", "z6", "z7", "p0", "p1"); } #endif // !defined(LIBYUV_DISABLE_SME) && defined(CLANG_HAS_SME) && // defined(__aarch64__) #ifdef __cplusplus } // extern "C" } // namespace libyuv #endif