av1/common/arm/convolve_sve2.c - aom - Git at Google

 /*
  * Copyright (c) 2024, Alliance for Open Media. All rights reserved.
  *
  * This source code is subject to the terms of the BSD 2 Clause License and
  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
  * was not distributed with this source code in the LICENSE file, you can
  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */

 #include <arm_neon.h>
 #include <assert.h>

 #include "config/aom_config.h"
 #include "config/av1_rtcd.h"

 #include "aom/aom_integer.h"
 #include "aom_dsp/aom_dsp_common.h"
 #include "aom_dsp/aom_filter.h"
 #include "aom_dsp/arm/aom_filter.h"
 #include "aom_dsp/arm/aom_neon_sve_bridge.h"
 #include "aom_dsp/arm/mem_neon.h"
 #include "aom_dsp/arm/transpose_neon.h"
 #include "aom_ports/mem.h"
 #include "av1/common/arm/highbd_convolve_sve2.h"
 #include "av1/common/arm/convolve_neon_i8mm.h"

 static INLINE int32x4_t highbd_convolve12_4_2d_v(int16x8_t s0[2],
                                                  int16x8_t s1[2],
                                                  int16x8_t s2[2],
                                                  int16x8_t filter_0_7,
                                                  int16x8_t filter_4_11) {
   int64x2_t sum01 = aom_svdot_lane_s16(vdupq_n_s64(0), s0[0], filter_0_7, 0);
   sum01 = aom_svdot_lane_s16(sum01, s1[0], filter_0_7, 1);
   sum01 = aom_svdot_lane_s16(sum01, s2[0], filter_4_11, 1);

   int64x2_t sum23 = aom_svdot_lane_s16(vdupq_n_s64(0), s0[1], filter_0_7, 0);
   sum23 = aom_svdot_lane_s16(sum23, s1[1], filter_0_7, 1);
   sum23 = aom_svdot_lane_s16(sum23, s2[1], filter_4_11, 1);

   return vcombine_s32(vmovn_s64(sum01), vmovn_s64(sum23));
 }

 static INLINE void convolve_2d_sr_vert_12tap_sve2(
     const int16_t *src_ptr, int src_stride, uint8_t *dst_ptr,
     const int dst_stride, int w, int h, const int16x8_t y_filter_0_7,
     const int16x8_t y_filter_4_11) {
   // The no-op filter should never be used here.
   assert(vgetq_lane_s16(y_filter_0_7, 5) != 128);

   const int bd = 8;
   const int16x8_t sub_const = vdupq_n_s16(1 << (bd - 1));

   uint16x8x3_t merge_block_tbl = vld1q_u16_x3(kDotProdMergeBlockTbl);
   // Scale indices by size of the true vector length to avoid reading from an
   // 'undefined' portion of a vector on a system with SVE vectors > 128-bit.
   uint16x8_t correction0 =
       vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000000000000ULL));
   merge_block_tbl.val[0] = vaddq_u16(merge_block_tbl.val[0], correction0);

   uint16x8_t correction1 =
       vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000100000000ULL));
   merge_block_tbl.val[1] = vaddq_u16(merge_block_tbl.val[1], correction1);

   uint16x8_t correction2 =
       vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000100010000ULL));
   merge_block_tbl.val[2] = vaddq_u16(merge_block_tbl.val[2], correction2);

   do {
     int16_t *s = (int16_t *)src_ptr;
     uint8_t *d = (uint8_t *)dst_ptr;
     int height = h;

     int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, sA;
     load_s16_4x11(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7, &s8,
                   &s9, &sA);
     s += 11 * src_stride;

     int16x8_t s0123[2], s1234[2], s2345[2], s3456[2], s4567[2], s5678[2],
         s6789[2], s789A[2];
     // This operation combines a conventional transpose and the sample permute
     // required before computing the dot product.
     transpose_concat_4x4(s0, s1, s2, s3, s0123);
     transpose_concat_4x4(s1, s2, s3, s4, s1234);
     transpose_concat_4x4(s2, s3, s4, s5, s2345);
     transpose_concat_4x4(s3, s4, s5, s6, s3456);
     transpose_concat_4x4(s4, s5, s6, s7, s4567);
     transpose_concat_4x4(s5, s6, s7, s8, s5678);
     transpose_concat_4x4(s6, s7, s8, s9, s6789);
     transpose_concat_4x4(s7, s8, s9, sA, s789A);

     do {
       int16x4_t sB, sC, sD, sE;
       load_s16_4x4(s, src_stride, &sB, &sC, &sD, &sE);

       int16x8_t s89AB[2], s9ABC[2], sABCD[2], sBCDE[2];
       transpose_concat_4x4(sB, sC, sD, sE, sBCDE);

       // Merge new data into block from previous iteration.
       aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[0], s89AB);
       aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[1], s9ABC);
       aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[2], sABCD);

       int32x4_t d0 = highbd_convolve12_4_2d_v(s0123, s4567, s89AB, y_filter_0_7,
                                               y_filter_4_11);
       int32x4_t d1 = highbd_convolve12_4_2d_v(s1234, s5678, s9ABC, y_filter_0_7,
                                               y_filter_4_11);
       int32x4_t d2 = highbd_convolve12_4_2d_v(s2345, s6789, sABCD, y_filter_0_7,
                                               y_filter_4_11);
       int32x4_t d3 = highbd_convolve12_4_2d_v(s3456, s789A, sBCDE, y_filter_0_7,
                                               y_filter_4_11);

       int16x8_t dd01 =
           vcombine_s16(vqrshrn_n_s32(d0, 2 * FILTER_BITS - ROUND0_BITS),
                        vqrshrn_n_s32(d1, 2 * FILTER_BITS - ROUND0_BITS));
       int16x8_t dd23 =
           vcombine_s16(vqrshrn_n_s32(d2, 2 * FILTER_BITS - ROUND0_BITS),
                        vqrshrn_n_s32(d3, 2 * FILTER_BITS - ROUND0_BITS));

       dd01 = vsubq_s16(dd01, sub_const);
       dd23 = vsubq_s16(dd23, sub_const);

       uint8x8_t d01 = vqmovun_s16(dd01);
       uint8x8_t d23 = vqmovun_s16(dd23);

       store_u8x4_strided_x2(d + 0 * dst_stride, dst_stride, d01);
       store_u8x4_strided_x2(d + 2 * dst_stride, dst_stride, d23);

       // Prepare block for next iteration - re-using as much as possible.
       // Shuffle everything up four rows.
       s0123[0] = s4567[0];
       s0123[1] = s4567[1];
       s1234[0] = s5678[0];
       s1234[1] = s5678[1];
       s2345[0] = s6789[0];
       s2345[1] = s6789[1];
       s3456[0] = s789A[0];
       s3456[1] = s789A[1];
       s4567[0] = s89AB[0];
       s4567[1] = s89AB[1];
       s5678[0] = s9ABC[0];
       s5678[1] = s9ABC[1];
       s6789[0] = sABCD[0];
       s6789[1] = sABCD[1];
       s789A[0] = sBCDE[0];
       s789A[1] = sBCDE[1];

       s += 4 * src_stride;
       d += 4 * dst_stride;
       height -= 4;
     } while (height != 0);
     src_ptr += 4;
     dst_ptr += 4;
     w -= 4;
   } while (w != 0);
 }

 void av1_convolve_2d_sr_sve2(const uint8_t *src, int src_stride, uint8_t *dst,
                              int dst_stride, int w, int h,
                              const InterpFilterParams *filter_params_x,
                              const InterpFilterParams *filter_params_y,
                              const int subpel_x_qn, const int subpel_y_qn,
                              ConvolveParams *conv_params) {
   if (w == 2 || h == 2) {
     av1_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h,
                          filter_params_x, filter_params_y, subpel_x_qn,
                          subpel_y_qn, conv_params);
     return;
   }

   if (filter_params_x->taps > 8) {
     const int im_h = h + filter_params_y->taps - 1;
     const int im_stride = MAX_SB_SIZE;
     const int vert_offset = filter_params_x->taps / 2 - 1;
     const int horiz_offset = filter_params_x->taps / 2 - 1;
     const uint8_t *src_ptr = src - vert_offset * src_stride - horiz_offset;

     const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel(
         filter_params_x, subpel_x_qn & SUBPEL_MASK);
     const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel(
         filter_params_y, subpel_y_qn & SUBPEL_MASK);

     DECLARE_ALIGNED(16, int16_t,
                     im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);

     const int16x8_t x_filter_0_7 = vld1q_s16(x_filter_ptr);
     const int16x4_t x_filter_8_11 = vld1_s16(x_filter_ptr + 8);
     const int16x8_t y_filter_0_7 = vld1q_s16(y_filter_ptr);
     const int16x8_t y_filter_4_11 = vld1q_s16(y_filter_ptr + 4);

     convolve_2d_sr_horiz_12tap_neon_i8mm(src_ptr, src_stride, im_block,
                                          im_stride, w, im_h, x_filter_0_7,
                                          x_filter_8_11);

     convolve_2d_sr_vert_12tap_sve2(im_block, im_stride, dst, dst_stride, w, h,
                                    y_filter_0_7, y_filter_4_11);
   } else {
     av1_convolve_2d_sr_neon_i8mm(src, src_stride, dst, dst_stride, w, h,
                                  filter_params_x, filter_params_y, subpel_x_qn,
                                  subpel_y_qn, conv_params);
   }
 }
	/*
	* Copyright (c) 2024, Alliance for Open Media. All rights reserved.
	*
	* This source code is subject to the terms of the BSD 2 Clause License and
	* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
	* was not distributed with this source code in the LICENSE file, you can
	* obtain it at www.aomedia.org/license/software. If the Alliance for Open
	* Media Patent License 1.0 was not distributed with this source code in the
	* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
	*/

	#include <arm_neon.h>
	#include <assert.h>

	#include "config/aom_config.h"
	#include "config/av1_rtcd.h"

	#include "aom/aom_integer.h"
	#include "aom_dsp/aom_dsp_common.h"
	#include "aom_dsp/aom_filter.h"
	#include "aom_dsp/arm/aom_filter.h"
	#include "aom_dsp/arm/aom_neon_sve_bridge.h"
	#include "aom_dsp/arm/mem_neon.h"
	#include "aom_dsp/arm/transpose_neon.h"
	#include "aom_ports/mem.h"
	#include "av1/common/arm/highbd_convolve_sve2.h"
	#include "av1/common/arm/convolve_neon_i8mm.h"

	static INLINE int32x4_t highbd_convolve12_4_2d_v(int16x8_t s0[2],
	int16x8_t s1[2],
	int16x8_t s2[2],
	int16x8_t filter_0_7,
	int16x8_t filter_4_11) {
	int64x2_t sum01 = aom_svdot_lane_s16(vdupq_n_s64(0), s0[0], filter_0_7, 0);
	sum01 = aom_svdot_lane_s16(sum01, s1[0], filter_0_7, 1);
	sum01 = aom_svdot_lane_s16(sum01, s2[0], filter_4_11, 1);

	int64x2_t sum23 = aom_svdot_lane_s16(vdupq_n_s64(0), s0[1], filter_0_7, 0);
	sum23 = aom_svdot_lane_s16(sum23, s1[1], filter_0_7, 1);
	sum23 = aom_svdot_lane_s16(sum23, s2[1], filter_4_11, 1);

	return vcombine_s32(vmovn_s64(sum01), vmovn_s64(sum23));
	}

	static INLINE void convolve_2d_sr_vert_12tap_sve2(
	const int16_t src_ptr, int src_stride, uint8_t dst_ptr,
	const int dst_stride, int w, int h, const int16x8_t y_filter_0_7,
	const int16x8_t y_filter_4_11) {
	// The no-op filter should never be used here.
	assert(vgetq_lane_s16(y_filter_0_7, 5) != 128);

	const int bd = 8;
	const int16x8_t sub_const = vdupq_n_s16(1 << (bd - 1));

	uint16x8x3_t merge_block_tbl = vld1q_u16_x3(kDotProdMergeBlockTbl);
	// Scale indices by size of the true vector length to avoid reading from an
	// 'undefined' portion of a vector on a system with SVE vectors > 128-bit.
	uint16x8_t correction0 =
	vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000000000000ULL));
	merge_block_tbl.val[0] = vaddq_u16(merge_block_tbl.val[0], correction0);

	uint16x8_t correction1 =
	vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000100000000ULL));
	merge_block_tbl.val[1] = vaddq_u16(merge_block_tbl.val[1], correction1);

	uint16x8_t correction2 =
	vreinterpretq_u16_u64(vdupq_n_u64(svcnth() * 0x0001000100010000ULL));
	merge_block_tbl.val[2] = vaddq_u16(merge_block_tbl.val[2], correction2);

	do {
	int16_t s = (int16_t )src_ptr;
	uint8_t d = (uint8_t )dst_ptr;
	int height = h;

	int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, sA;
	load_s16_4x11(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7, &s8,
	&s9, &sA);
	s += 11 * src_stride;

	int16x8_t s0123[2], s1234[2], s2345[2], s3456[2], s4567[2], s5678[2],
	s6789[2], s789A[2];
	// This operation combines a conventional transpose and the sample permute
	// required before computing the dot product.
	transpose_concat_4x4(s0, s1, s2, s3, s0123);
	transpose_concat_4x4(s1, s2, s3, s4, s1234);
	transpose_concat_4x4(s2, s3, s4, s5, s2345);
	transpose_concat_4x4(s3, s4, s5, s6, s3456);
	transpose_concat_4x4(s4, s5, s6, s7, s4567);
	transpose_concat_4x4(s5, s6, s7, s8, s5678);
	transpose_concat_4x4(s6, s7, s8, s9, s6789);
	transpose_concat_4x4(s7, s8, s9, sA, s789A);

	do {
	int16x4_t sB, sC, sD, sE;
	load_s16_4x4(s, src_stride, &sB, &sC, &sD, &sE);

	int16x8_t s89AB[2], s9ABC[2], sABCD[2], sBCDE[2];
	transpose_concat_4x4(sB, sC, sD, sE, sBCDE);

	// Merge new data into block from previous iteration.
	aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[0], s89AB);
	aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[1], s9ABC);
	aom_tbl2x2_s16(s789A, sBCDE, merge_block_tbl.val[2], sABCD);

	int32x4_t d0 = highbd_convolve12_4_2d_v(s0123, s4567, s89AB, y_filter_0_7,
	y_filter_4_11);
	int32x4_t d1 = highbd_convolve12_4_2d_v(s1234, s5678, s9ABC, y_filter_0_7,
	y_filter_4_11);
	int32x4_t d2 = highbd_convolve12_4_2d_v(s2345, s6789, sABCD, y_filter_0_7,
	y_filter_4_11);
	int32x4_t d3 = highbd_convolve12_4_2d_v(s3456, s789A, sBCDE, y_filter_0_7,
	y_filter_4_11);

	int16x8_t dd01 =
	vcombine_s16(vqrshrn_n_s32(d0, 2 * FILTER_BITS - ROUND0_BITS),
	vqrshrn_n_s32(d1, 2 * FILTER_BITS - ROUND0_BITS));
	int16x8_t dd23 =
	vcombine_s16(vqrshrn_n_s32(d2, 2 * FILTER_BITS - ROUND0_BITS),
	vqrshrn_n_s32(d3, 2 * FILTER_BITS - ROUND0_BITS));

	dd01 = vsubq_s16(dd01, sub_const);
	dd23 = vsubq_s16(dd23, sub_const);

	uint8x8_t d01 = vqmovun_s16(dd01);
	uint8x8_t d23 = vqmovun_s16(dd23);

	store_u8x4_strided_x2(d + 0 * dst_stride, dst_stride, d01);
	store_u8x4_strided_x2(d + 2 * dst_stride, dst_stride, d23);

	// Prepare block for next iteration - re-using as much as possible.
	// Shuffle everything up four rows.
	s0123[0] = s4567[0];
	s0123[1] = s4567[1];
	s1234[0] = s5678[0];
	s1234[1] = s5678[1];
	s2345[0] = s6789[0];
	s2345[1] = s6789[1];
	s3456[0] = s789A[0];
	s3456[1] = s789A[1];
	s4567[0] = s89AB[0];
	s4567[1] = s89AB[1];
	s5678[0] = s9ABC[0];
	s5678[1] = s9ABC[1];
	s6789[0] = sABCD[0];
	s6789[1] = sABCD[1];
	s789A[0] = sBCDE[0];
	s789A[1] = sBCDE[1];

	s += 4 * src_stride;
	d += 4 * dst_stride;
	height -= 4;
	} while (height != 0);
	src_ptr += 4;
	dst_ptr += 4;
	w -= 4;
	} while (w != 0);
	}

	void av1_convolve_2d_sr_sve2(const uint8_t src, int src_stride, uint8_t dst,
	int dst_stride, int w, int h,
	const InterpFilterParams *filter_params_x,
	const InterpFilterParams *filter_params_y,
	const int subpel_x_qn, const int subpel_y_qn,
	ConvolveParams *conv_params) {
	if (w == 2 \|\| h == 2) {
	av1_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h,
	filter_params_x, filter_params_y, subpel_x_qn,
	subpel_y_qn, conv_params);
	return;
	}

	if (filter_params_x->taps > 8) {
	const int im_h = h + filter_params_y->taps - 1;
	const int im_stride = MAX_SB_SIZE;
	const int vert_offset = filter_params_x->taps / 2 - 1;
	const int horiz_offset = filter_params_x->taps / 2 - 1;
	const uint8_t src_ptr = src - vert_offset src_stride - horiz_offset;

	const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel(
	filter_params_x, subpel_x_qn & SUBPEL_MASK);
	const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel(
	filter_params_y, subpel_y_qn & SUBPEL_MASK);

	DECLARE_ALIGNED(16, int16_t,
	im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);

	const int16x8_t x_filter_0_7 = vld1q_s16(x_filter_ptr);
	const int16x4_t x_filter_8_11 = vld1_s16(x_filter_ptr + 8);
	const int16x8_t y_filter_0_7 = vld1q_s16(y_filter_ptr);
	const int16x8_t y_filter_4_11 = vld1q_s16(y_filter_ptr + 4);

	convolve_2d_sr_horiz_12tap_neon_i8mm(src_ptr, src_stride, im_block,
	im_stride, w, im_h, x_filter_0_7,
	x_filter_8_11);

	convolve_2d_sr_vert_12tap_sve2(im_block, im_stride, dst, dst_stride, w, h,
	y_filter_0_7, y_filter_4_11);
	} else {
	av1_convolve_2d_sr_neon_i8mm(src, src_stride, dst, dst_stride, w, h,
	filter_params_x, filter_params_y, subpel_x_qn,
	subpel_y_qn, conv_params);
	}
	}