| /* |
| * Copyright 2014 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/rotate_row.h" |
| #include "libyuv/row.h" |
| |
| #include "libyuv/basic_types.h" |
| |
| #ifdef __cplusplus |
| namespace libyuv { |
| extern "C" { |
| #endif |
| |
| // This module is for GCC Neon armv8 64 bit. |
| #if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) |
| |
| static const uvec8 kVTbl4x4Transpose = {0, 4, 8, 12, 1, 5, 9, 13, |
| 2, 6, 10, 14, 3, 7, 11, 15}; |
| |
| void TransposeWx8_NEON(const uint8_t* src, |
| int src_stride, |
| uint8_t* dst, |
| int dst_stride, |
| int width) { |
| const uint8_t* src_temp; |
| asm volatile( |
| // loops are on blocks of 8. loop will stop when |
| // counter gets to or below 0. starting the counter |
| // at w-8 allow for this |
| "sub %w3, %w3, #8 \n" |
| |
| // handle 8x8 blocks. this should be the majority of the plane |
| "1: \n" |
| "mov %0, %1 \n" |
| |
| "ld1 {v0.8b}, [%0], %5 \n" |
| "ld1 {v1.8b}, [%0], %5 \n" |
| "ld1 {v2.8b}, [%0], %5 \n" |
| "ld1 {v3.8b}, [%0], %5 \n" |
| "ld1 {v4.8b}, [%0], %5 \n" |
| "ld1 {v5.8b}, [%0], %5 \n" |
| "ld1 {v6.8b}, [%0], %5 \n" |
| "ld1 {v7.8b}, [%0] \n" |
| "mov %0, %1 \n" |
| |
| "trn2 v16.8b, v0.8b, v1.8b \n" |
| "prfm pldl1keep, [%0, 448] \n" // prefetch 7 lines ahead |
| "trn1 v17.8b, v0.8b, v1.8b \n" |
| "add %0, %0, %5 \n" |
| "trn2 v18.8b, v2.8b, v3.8b \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 1 |
| "trn1 v19.8b, v2.8b, v3.8b \n" |
| "add %0, %0, %5 \n" |
| "trn2 v20.8b, v4.8b, v5.8b \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 2 |
| "trn1 v21.8b, v4.8b, v5.8b \n" |
| "add %0, %0, %5 \n" |
| "trn2 v22.8b, v6.8b, v7.8b \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 3 |
| "trn1 v23.8b, v6.8b, v7.8b \n" |
| "add %0, %0, %5 \n" |
| |
| "trn2 v3.4h, v17.4h, v19.4h \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 4 |
| "trn1 v1.4h, v17.4h, v19.4h \n" |
| "add %0, %0, %5 \n" |
| "trn2 v2.4h, v16.4h, v18.4h \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 5 |
| "trn1 v0.4h, v16.4h, v18.4h \n" |
| "add %0, %0, %5 \n" |
| "trn2 v7.4h, v21.4h, v23.4h \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 6 |
| "trn1 v5.4h, v21.4h, v23.4h \n" |
| "add %0, %0, %5 \n" |
| "trn2 v6.4h, v20.4h, v22.4h \n" |
| "prfm pldl1keep, [%0, 448] \n" // row 7 |
| "trn1 v4.4h, v20.4h, v22.4h \n" |
| |
| "trn2 v21.2s, v1.2s, v5.2s \n" |
| "trn1 v17.2s, v1.2s, v5.2s \n" |
| "trn2 v20.2s, v0.2s, v4.2s \n" |
| "trn1 v16.2s, v0.2s, v4.2s \n" |
| "trn2 v23.2s, v3.2s, v7.2s \n" |
| "trn1 v19.2s, v3.2s, v7.2s \n" |
| "trn2 v22.2s, v2.2s, v6.2s \n" |
| "trn1 v18.2s, v2.2s, v6.2s \n" |
| |
| "mov %0, %2 \n" |
| |
| "st1 {v17.8b}, [%0], %6 \n" |
| "st1 {v16.8b}, [%0], %6 \n" |
| "st1 {v19.8b}, [%0], %6 \n" |
| "st1 {v18.8b}, [%0], %6 \n" |
| "st1 {v21.8b}, [%0], %6 \n" |
| "st1 {v20.8b}, [%0], %6 \n" |
| "st1 {v23.8b}, [%0], %6 \n" |
| "st1 {v22.8b}, [%0] \n" |
| |
| "add %1, %1, #8 \n" // src += 8 |
| "add %2, %2, %6, lsl #3 \n" // dst += 8 * dst_stride |
| "subs %w3, %w3, #8 \n" // w -= 8 |
| "b.ge 1b \n" |
| |
| // add 8 back to counter. if the result is 0 there are |
| // no residuals. |
| "adds %w3, %w3, #8 \n" |
| "b.eq 4f \n" |
| |
| // some residual, so between 1 and 7 lines left to transpose |
| "cmp %w3, #2 \n" |
| "b.lt 3f \n" |
| |
| "cmp %w3, #4 \n" |
| "b.lt 2f \n" |
| |
| // 4x8 block |
| "mov %0, %1 \n" |
| "ld1 {v0.s}[0], [%0], %5 \n" |
| "ld1 {v0.s}[1], [%0], %5 \n" |
| "ld1 {v0.s}[2], [%0], %5 \n" |
| "ld1 {v0.s}[3], [%0], %5 \n" |
| "ld1 {v1.s}[0], [%0], %5 \n" |
| "ld1 {v1.s}[1], [%0], %5 \n" |
| "ld1 {v1.s}[2], [%0], %5 \n" |
| "ld1 {v1.s}[3], [%0] \n" |
| |
| "mov %0, %2 \n" |
| |
| "ld1 {v2.16b}, [%4] \n" |
| |
| "tbl v3.16b, {v0.16b}, v2.16b \n" |
| "tbl v0.16b, {v1.16b}, v2.16b \n" |
| |
| // TODO(frkoenig): Rework shuffle above to |
| // write out with 4 instead of 8 writes. |
| "st1 {v3.s}[0], [%0], %6 \n" |
| "st1 {v3.s}[1], [%0], %6 \n" |
| "st1 {v3.s}[2], [%0], %6 \n" |
| "st1 {v3.s}[3], [%0] \n" |
| |
| "add %0, %2, #4 \n" |
| "st1 {v0.s}[0], [%0], %6 \n" |
| "st1 {v0.s}[1], [%0], %6 \n" |
| "st1 {v0.s}[2], [%0], %6 \n" |
| "st1 {v0.s}[3], [%0] \n" |
| |
| "add %1, %1, #4 \n" // src += 4 |
| "add %2, %2, %6, lsl #2 \n" // dst += 4 * dst_stride |
| "subs %w3, %w3, #4 \n" // w -= 4 |
| "b.eq 4f \n" |
| |
| // some residual, check to see if it includes a 2x8 block, |
| // or less |
| "cmp %w3, #2 \n" |
| "b.lt 3f \n" |
| |
| // 2x8 block |
| "2: \n" |
| "mov %0, %1 \n" |
| "ld1 {v0.h}[0], [%0], %5 \n" |
| "ld1 {v1.h}[0], [%0], %5 \n" |
| "ld1 {v0.h}[1], [%0], %5 \n" |
| "ld1 {v1.h}[1], [%0], %5 \n" |
| "ld1 {v0.h}[2], [%0], %5 \n" |
| "ld1 {v1.h}[2], [%0], %5 \n" |
| "ld1 {v0.h}[3], [%0], %5 \n" |
| "ld1 {v1.h}[3], [%0] \n" |
| |
| "trn2 v2.8b, v0.8b, v1.8b \n" |
| "trn1 v3.8b, v0.8b, v1.8b \n" |
| |
| "mov %0, %2 \n" |
| |
| "st1 {v3.8b}, [%0], %6 \n" |
| "st1 {v2.8b}, [%0] \n" |
| |
| "add %1, %1, #2 \n" // src += 2 |
| "add %2, %2, %6, lsl #1 \n" // dst += 2 * dst_stride |
| "subs %w3, %w3, #2 \n" // w -= 2 |
| "b.eq 4f \n" |
| |
| // 1x8 block |
| "3: \n" |
| "ld1 {v0.b}[0], [%1], %5 \n" |
| "ld1 {v0.b}[1], [%1], %5 \n" |
| "ld1 {v0.b}[2], [%1], %5 \n" |
| "ld1 {v0.b}[3], [%1], %5 \n" |
| "ld1 {v0.b}[4], [%1], %5 \n" |
| "ld1 {v0.b}[5], [%1], %5 \n" |
| "ld1 {v0.b}[6], [%1], %5 \n" |
| "ld1 {v0.b}[7], [%1] \n" |
| |
| "st1 {v0.8b}, [%2] \n" |
| |
| "4: \n" |
| |
| : "=&r"(src_temp), // %0 |
| "+r"(src), // %1 |
| "+r"(dst), // %2 |
| "+r"(width) // %3 |
| : "r"(&kVTbl4x4Transpose), // %4 |
| "r"(static_cast<ptrdiff_t>(src_stride)), // %5 |
| "r"(static_cast<ptrdiff_t>(dst_stride)) // %6 |
| : "memory", "cc", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16", |
| "v17", "v18", "v19", "v20", "v21", "v22", "v23"); |
| } |
| |
| static const uint8_t kVTbl4x4TransposeDi[32] = { |
| 0, 16, 32, 48, 2, 18, 34, 50, 4, 20, 36, 52, 6, 22, 38, 54, |
| 1, 17, 33, 49, 3, 19, 35, 51, 5, 21, 37, 53, 7, 23, 39, 55}; |
| |
| void TransposeUVWx8_NEON(const uint8_t* src, |
| int src_stride, |
| uint8_t* dst_a, |
| int dst_stride_a, |
| uint8_t* dst_b, |
| int dst_stride_b, |
| int width) { |
| const uint8_t* src_temp; |
| asm volatile( |
| // loops are on blocks of 8. loop will stop when |
| // counter gets to or below 0. starting the counter |
| // at w-8 allow for this |
| "sub %w4, %w4, #8 \n" |
| |
| // handle 8x8 blocks. this should be the majority of the plane |
| "1: \n" |
| "mov %0, %1 \n" |
| |
| "ld1 {v0.16b}, [%0], %5 \n" |
| "ld1 {v1.16b}, [%0], %5 \n" |
| "ld1 {v2.16b}, [%0], %5 \n" |
| "ld1 {v3.16b}, [%0], %5 \n" |
| "ld1 {v4.16b}, [%0], %5 \n" |
| "ld1 {v5.16b}, [%0], %5 \n" |
| "ld1 {v6.16b}, [%0], %5 \n" |
| "ld1 {v7.16b}, [%0] \n" |
| "mov %0, %1 \n" |
| |
| "trn1 v16.16b, v0.16b, v1.16b \n" |
| "trn2 v17.16b, v0.16b, v1.16b \n" |
| "trn1 v18.16b, v2.16b, v3.16b \n" |
| "trn2 v19.16b, v2.16b, v3.16b \n" |
| "trn1 v20.16b, v4.16b, v5.16b \n" |
| "trn2 v21.16b, v4.16b, v5.16b \n" |
| "trn1 v22.16b, v6.16b, v7.16b \n" |
| "trn2 v23.16b, v6.16b, v7.16b \n" |
| |
| "trn1 v0.8h, v16.8h, v18.8h \n" |
| "trn2 v1.8h, v16.8h, v18.8h \n" |
| "trn1 v2.8h, v20.8h, v22.8h \n" |
| "trn2 v3.8h, v20.8h, v22.8h \n" |
| "trn1 v4.8h, v17.8h, v19.8h \n" |
| "trn2 v5.8h, v17.8h, v19.8h \n" |
| "trn1 v6.8h, v21.8h, v23.8h \n" |
| "trn2 v7.8h, v21.8h, v23.8h \n" |
| |
| "trn1 v16.4s, v0.4s, v2.4s \n" |
| "trn2 v17.4s, v0.4s, v2.4s \n" |
| "trn1 v18.4s, v1.4s, v3.4s \n" |
| "trn2 v19.4s, v1.4s, v3.4s \n" |
| "trn1 v20.4s, v4.4s, v6.4s \n" |
| "trn2 v21.4s, v4.4s, v6.4s \n" |
| "trn1 v22.4s, v5.4s, v7.4s \n" |
| "trn2 v23.4s, v5.4s, v7.4s \n" |
| |
| "mov %0, %2 \n" |
| |
| "st1 {v16.d}[0], [%0], %6 \n" |
| "st1 {v18.d}[0], [%0], %6 \n" |
| "st1 {v17.d}[0], [%0], %6 \n" |
| "st1 {v19.d}[0], [%0], %6 \n" |
| "st1 {v16.d}[1], [%0], %6 \n" |
| "st1 {v18.d}[1], [%0], %6 \n" |
| "st1 {v17.d}[1], [%0], %6 \n" |
| "st1 {v19.d}[1], [%0] \n" |
| |
| "mov %0, %3 \n" |
| |
| "st1 {v20.d}[0], [%0], %7 \n" |
| "st1 {v22.d}[0], [%0], %7 \n" |
| "st1 {v21.d}[0], [%0], %7 \n" |
| "st1 {v23.d}[0], [%0], %7 \n" |
| "st1 {v20.d}[1], [%0], %7 \n" |
| "st1 {v22.d}[1], [%0], %7 \n" |
| "st1 {v21.d}[1], [%0], %7 \n" |
| "st1 {v23.d}[1], [%0] \n" |
| |
| "add %1, %1, #16 \n" // src += 8*2 |
| "add %2, %2, %6, lsl #3 \n" // dst_a += 8 * |
| // dst_stride_a |
| "add %3, %3, %7, lsl #3 \n" // dst_b += 8 * |
| // dst_stride_b |
| "subs %w4, %w4, #8 \n" // w -= 8 |
| "b.ge 1b \n" |
| |
| // add 8 back to counter. if the result is 0 there are |
| // no residuals. |
| "adds %w4, %w4, #8 \n" |
| "b.eq 4f \n" |
| |
| // some residual, so between 1 and 7 lines left to transpose |
| "cmp %w4, #2 \n" |
| "b.lt 3f \n" |
| |
| "cmp %w4, #4 \n" |
| "b.lt 2f \n" |
| |
| // TODO(frkoenig): Clean this up |
| // 4x8 block |
| "mov %0, %1 \n" |
| "ld1 {v0.8b}, [%0], %5 \n" |
| "ld1 {v1.8b}, [%0], %5 \n" |
| "ld1 {v2.8b}, [%0], %5 \n" |
| "ld1 {v3.8b}, [%0], %5 \n" |
| "ld1 {v4.8b}, [%0], %5 \n" |
| "ld1 {v5.8b}, [%0], %5 \n" |
| "ld1 {v6.8b}, [%0], %5 \n" |
| "ld1 {v7.8b}, [%0] \n" |
| |
| "ld1 {v30.16b}, [%8], #16 \n" |
| "ld1 {v31.16b}, [%8] \n" |
| |
| "tbl v16.16b, {v0.16b, v1.16b, v2.16b, v3.16b}, v30.16b \n" |
| "tbl v17.16b, {v0.16b, v1.16b, v2.16b, v3.16b}, v31.16b \n" |
| "tbl v18.16b, {v4.16b, v5.16b, v6.16b, v7.16b}, v30.16b \n" |
| "tbl v19.16b, {v4.16b, v5.16b, v6.16b, v7.16b}, v31.16b \n" |
| |
| "mov %0, %2 \n" |
| |
| "st1 {v16.s}[0], [%0], %6 \n" |
| "st1 {v16.s}[1], [%0], %6 \n" |
| "st1 {v16.s}[2], [%0], %6 \n" |
| "st1 {v16.s}[3], [%0], %6 \n" |
| |
| "add %0, %2, #4 \n" |
| "st1 {v18.s}[0], [%0], %6 \n" |
| "st1 {v18.s}[1], [%0], %6 \n" |
| "st1 {v18.s}[2], [%0], %6 \n" |
| "st1 {v18.s}[3], [%0] \n" |
| |
| "mov %0, %3 \n" |
| |
| "st1 {v17.s}[0], [%0], %7 \n" |
| "st1 {v17.s}[1], [%0], %7 \n" |
| "st1 {v17.s}[2], [%0], %7 \n" |
| "st1 {v17.s}[3], [%0], %7 \n" |
| |
| "add %0, %3, #4 \n" |
| "st1 {v19.s}[0], [%0], %7 \n" |
| "st1 {v19.s}[1], [%0], %7 \n" |
| "st1 {v19.s}[2], [%0], %7 \n" |
| "st1 {v19.s}[3], [%0] \n" |
| |
| "add %1, %1, #8 \n" // src += 4 * 2 |
| "add %2, %2, %6, lsl #2 \n" // dst_a += 4 * |
| // dst_stride_a |
| "add %3, %3, %7, lsl #2 \n" // dst_b += 4 * |
| // dst_stride_b |
| "subs %w4, %w4, #4 \n" // w -= 4 |
| "b.eq 4f \n" |
| |
| // some residual, check to see if it includes a 2x8 block, |
| // or less |
| "cmp %w4, #2 \n" |
| "b.lt 3f \n" |
| |
| // 2x8 block |
| "2: \n" |
| "mov %0, %1 \n" |
| "ld2 {v0.h, v1.h}[0], [%0], %5 \n" |
| "ld2 {v2.h, v3.h}[0], [%0], %5 \n" |
| "ld2 {v0.h, v1.h}[1], [%0], %5 \n" |
| "ld2 {v2.h, v3.h}[1], [%0], %5 \n" |
| "ld2 {v0.h, v1.h}[2], [%0], %5 \n" |
| "ld2 {v2.h, v3.h}[2], [%0], %5 \n" |
| "ld2 {v0.h, v1.h}[3], [%0], %5 \n" |
| "ld2 {v2.h, v3.h}[3], [%0] \n" |
| |
| "trn1 v4.8b, v0.8b, v2.8b \n" |
| "trn2 v5.8b, v0.8b, v2.8b \n" |
| "trn1 v6.8b, v1.8b, v3.8b \n" |
| "trn2 v7.8b, v1.8b, v3.8b \n" |
| |
| "mov %0, %2 \n" |
| |
| "st1 {v4.d}[0], [%0], %6 \n" |
| "st1 {v6.d}[0], [%0] \n" |
| |
| "mov %0, %3 \n" |
| |
| "st1 {v5.d}[0], [%0], %7 \n" |
| "st1 {v7.d}[0], [%0] \n" |
| |
| "add %1, %1, #4 \n" // src += 2 * 2 |
| "add %2, %2, %6, lsl #1 \n" // dst_a += 2 * |
| // dst_stride_a |
| "add %3, %3, %7, lsl #1 \n" // dst_b += 2 * |
| // dst_stride_b |
| "subs %w4, %w4, #2 \n" // w -= 2 |
| "b.eq 4f \n" |
| |
| // 1x8 block |
| "3: \n" |
| "ld2 {v0.b, v1.b}[0], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[1], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[2], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[3], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[4], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[5], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[6], [%1], %5 \n" |
| "ld2 {v0.b, v1.b}[7], [%1] \n" |
| |
| "st1 {v0.d}[0], [%2] \n" |
| "st1 {v1.d}[0], [%3] \n" |
| |
| "4: \n" |
| |
| : "=&r"(src_temp), // %0 |
| "+r"(src), // %1 |
| "+r"(dst_a), // %2 |
| "+r"(dst_b), // %3 |
| "+r"(width) // %4 |
| : "r"(static_cast<ptrdiff_t>(src_stride)), // %5 |
| "r"(static_cast<ptrdiff_t>(dst_stride_a)), // %6 |
| "r"(static_cast<ptrdiff_t>(dst_stride_b)), // %7 |
| "r"(&kVTbl4x4TransposeDi) // %8 |
| : "memory", "cc", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16", |
| "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v30", "v31"); |
| } |
| #endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| } // namespace libyuv |
| #endif |
