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-rw-r--r--media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve8_neon_dotprod.c1117
1 files changed, 1117 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve8_neon_dotprod.c b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve8_neon_dotprod.c
new file mode 100644
index 0000000000..00bac3b9cf
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve8_neon_dotprod.c
@@ -0,0 +1,1117 @@
+/*
+ * Copyright (c) 2021 The WebM 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 <arm_neon.h>
+#include <assert.h>
+
+#include "./vpx_config.h"
+#include "./vpx_dsp_rtcd.h"
+#include "vpx/vpx_integer.h"
+#include "vpx_dsp/arm/mem_neon.h"
+#include "vpx_dsp/arm/transpose_neon.h"
+#include "vpx_dsp/arm/vpx_convolve8_neon.h"
+#include "vpx_dsp/vpx_filter.h"
+#include "vpx_ports/mem.h"
+
+DECLARE_ALIGNED(16, static const uint8_t, dot_prod_permute_tbl[48]) = {
+ 0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6,
+ 4, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10,
+ 8, 9, 10, 11, 9, 10, 11, 12, 10, 11, 12, 13, 11, 12, 13, 14
+};
+
+DECLARE_ALIGNED(16, static const uint8_t, dot_prod_tran_concat_tbl[32]) = {
+ 0, 8, 16, 24, 1, 9, 17, 25, 2, 10, 18, 26, 3, 11, 19, 27,
+ 4, 12, 20, 28, 5, 13, 21, 29, 6, 14, 22, 30, 7, 15, 23, 31
+};
+
+DECLARE_ALIGNED(16, static const uint8_t, dot_prod_merge_block_tbl[48]) = {
+ /* Shift left and insert new last column in transposed 4x4 block. */
+ 1, 2, 3, 16, 5, 6, 7, 20, 9, 10, 11, 24, 13, 14, 15, 28,
+ /* Shift left and insert two new columns in transposed 4x4 block. */
+ 2, 3, 16, 17, 6, 7, 20, 21, 10, 11, 24, 25, 14, 15, 28, 29,
+ /* Shift left and insert three new columns in transposed 4x4 block. */
+ 3, 16, 17, 18, 7, 20, 21, 22, 11, 24, 25, 26, 15, 28, 29, 30
+};
+
+static INLINE void vpx_convolve_4tap_2d_horiz_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x16_t range_limit) {
+ uint8x16_t s0, s1, s2, s3;
+
+ if (w == 4) {
+ const uint8x16_t perm_tbl = vld1q_u8(dot_prod_permute_tbl);
+ int16x4_t d0, d1, d2, d3;
+ uint8x8_t d01, d23;
+
+ do {
+ load_u8_16x4(src, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve4_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve4_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve4_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve4_4_sdot(s3, filter, correction, range_limit, perm_tbl);
+ /* We halved the filter values so -1 from right shift. */
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS - 1);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS - 1);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h > 3);
+
+ /* Process final three rows (h % 4 == 3). See vpx_convolve_neon.c for
+ * further details on possible values of block height. */
+ load_u8_16x3(src, src_stride, &s0, &s1, &s2);
+
+ d0 = convolve4_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve4_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve4_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS - 1);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, vdup_n_s16(0)), FILTER_BITS - 1);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8_4x1(dst + 2 * dst_stride, d23);
+ } else {
+ const uint8x16x2_t perm_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
+ const uint8_t *s;
+ uint8_t *d;
+ int width;
+ uint8x8_t d0, d1, d2, d3;
+
+ do {
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x4(s, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve4_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve4_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve4_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve4_8_sdot(s3, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h > 3);
+
+ /* Process final three rows (h % 4 == 3). See vpx_convolve_neon.c for
+ * further details on possible values of block height. */
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x3(s, src_stride, &s0, &s1, &s2);
+
+ d0 = convolve4_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve4_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve4_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x3(d, dst_stride, d0, d1, d2);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ }
+}
+
+static INLINE void vpx_convolve_8tap_2d_horiz_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x16_t range_limit) {
+ uint8x16_t s0, s1, s2, s3;
+
+ if (w == 4) {
+ const uint8x16x2_t perm_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
+ int16x4_t d0, d1, d2, d3;
+ uint8x8_t d01, d23;
+
+ do {
+ load_u8_16x4(src, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve8_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve8_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve8_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve8_4_sdot(s3, filter, correction, range_limit, perm_tbl);
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h > 3);
+
+ /* Process final three rows (h % 4 == 3). See vpx_convolve_neon.c for
+ * further details on possible values of block height. */
+ load_u8_16x3(src, src_stride, &s0, &s1, &s2);
+
+ d0 = convolve8_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve8_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve8_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, vdup_n_s16(0)), FILTER_BITS);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8_4x1(dst + 2 * dst_stride, d23);
+ } else {
+ const uint8x16x3_t perm_tbl = vld1q_u8_x3(dot_prod_permute_tbl);
+ const uint8_t *s;
+ uint8_t *d;
+ int width;
+ uint8x8_t d0, d1, d2, d3;
+
+ do {
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x4(s, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve8_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve8_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve8_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve8_8_sdot(s3, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h > 3);
+
+ /* Process final three rows (h % 4 == 3). See vpx_convolve_neon.c for
+ * further details on possible values of block height. */
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x3(s, src_stride, &s0, &s1, &s2);
+
+ d0 = convolve8_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve8_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve8_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x3(d, dst_stride, d0, d1, d2);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ }
+}
+
+void vpx_convolve8_2d_horiz_neon_dotprod(const uint8_t *src,
+ ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride,
+ const InterpKernel *filter, int x0_q4,
+ int x_step_q4, int y0_q4,
+ int y_step_q4, int w, int h) {
+ const int8x8_t x_filter_8tap = vmovn_s16(vld1q_s16(filter[x0_q4]));
+ const int32x4_t correction_8tap =
+ vdupq_n_s32(vaddlvq_s16(vshll_n_s8(x_filter_8tap, FILTER_BITS)));
+ const uint8x16_t range_limit = vdupq_n_u8(128);
+
+ assert((intptr_t)dst % 4 == 0);
+ assert(dst_stride % 4 == 0);
+ assert(x_step_q4 == 16);
+
+ (void)x_step_q4;
+ (void)y0_q4;
+ (void)y_step_q4;
+
+ if (vpx_get_filter_taps(filter[x0_q4]) <= 4) {
+ /* All 4-tap and bilinear filter values are even, so halve them to reduce
+ * intermediate precision requirements. Also slide the filter values so the
+ * the 4 taps exist in the first 4 elements of the vector.
+ */
+ const int8x8_t x_filter_4tap =
+ vext_s8(vshr_n_s8(x_filter_8tap, 1), vdup_n_s8(0), 2);
+ const int32x4_t correction_4tap = vshrq_n_s32(correction_8tap, 1);
+ vpx_convolve_4tap_2d_horiz_neon_dotprod(src - 1, src_stride, dst,
+ dst_stride, w, h, x_filter_4tap,
+ correction_4tap, range_limit);
+
+ } else {
+ vpx_convolve_8tap_2d_horiz_neon_dotprod(src - 3, src_stride, dst,
+ dst_stride, w, h, x_filter_8tap,
+ correction_8tap, range_limit);
+ }
+}
+
+static INLINE void vpx_convolve_4tap_horiz_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x16_t range_limit) {
+ uint8x16_t s0, s1, s2, s3;
+
+ if (w == 4) {
+ const uint8x16_t perm_tbl = vld1q_u8(dot_prod_permute_tbl);
+ do {
+ int16x4_t t0, t1, t2, t3;
+ uint8x8_t d01, d23;
+
+ load_u8_16x4(src, src_stride, &s0, &s1, &s2, &s3);
+
+ t0 = convolve4_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ t1 = convolve4_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ t2 = convolve4_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ t3 = convolve4_4_sdot(s3, filter, correction, range_limit, perm_tbl);
+ /* We halved the filter values so -1 from right shift. */
+ d01 = vqrshrun_n_s16(vcombine_s16(t0, t1), FILTER_BITS - 1);
+ d23 = vqrshrun_n_s16(vcombine_s16(t2, t3), FILTER_BITS - 1);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x2_t perm_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
+ const uint8_t *s;
+ uint8_t *d;
+ int width;
+ uint8x8_t d0, d1, d2, d3;
+
+ do {
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x4(s, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve4_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve4_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve4_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve4_8_sdot(s3, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ }
+}
+
+static INLINE void vpx_convolve_8tap_horiz_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x16_t range_limit) {
+ uint8x16_t s0, s1, s2, s3;
+
+ if (w == 4) {
+ const uint8x16x2_t perm_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
+ do {
+ int16x4_t t0, t1, t2, t3;
+ uint8x8_t d01, d23;
+
+ load_u8_16x4(src, src_stride, &s0, &s1, &s2, &s3);
+
+ t0 = convolve8_4_sdot(s0, filter, correction, range_limit, perm_tbl);
+ t1 = convolve8_4_sdot(s1, filter, correction, range_limit, perm_tbl);
+ t2 = convolve8_4_sdot(s2, filter, correction, range_limit, perm_tbl);
+ t3 = convolve8_4_sdot(s3, filter, correction, range_limit, perm_tbl);
+ d01 = vqrshrun_n_s16(vcombine_s16(t0, t1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(t2, t3), FILTER_BITS);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x3_t perm_tbl = vld1q_u8_x3(dot_prod_permute_tbl);
+ const uint8_t *s;
+ uint8_t *d;
+ int width;
+ uint8x8_t d0, d1, d2, d3;
+
+ do {
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x4(s, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve8_8_sdot(s0, filter, correction, range_limit, perm_tbl);
+ d1 = convolve8_8_sdot(s1, filter, correction, range_limit, perm_tbl);
+ d2 = convolve8_8_sdot(s2, filter, correction, range_limit, perm_tbl);
+ d3 = convolve8_8_sdot(s3, filter, correction, range_limit, perm_tbl);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ }
+}
+
+void vpx_convolve8_horiz_neon_dotprod(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *filter, int x0_q4,
+ int x_step_q4, int y0_q4, int y_step_q4,
+ int w, int h) {
+ const int8x8_t x_filter_8tap = vmovn_s16(vld1q_s16(filter[x0_q4]));
+ const int32x4_t correction_8tap =
+ vdupq_n_s32(vaddlvq_s16(vshll_n_s8(x_filter_8tap, FILTER_BITS)));
+ const uint8x16_t range_limit = vdupq_n_u8(128);
+
+ assert((intptr_t)dst % 4 == 0);
+ assert(dst_stride % 4 == 0);
+ assert(x_step_q4 == 16);
+
+ (void)x_step_q4;
+ (void)y0_q4;
+ (void)y_step_q4;
+
+ if (vpx_get_filter_taps(filter[x0_q4]) <= 4) {
+ /* All 4-tap and bilinear filter values are even, so halve them to reduce
+ * intermediate precision requirements. Also slide the filter values so the
+ * the 4 taps exist in the first 4 elements of the vector.
+ */
+ const int8x8_t x_filter_4tap =
+ vext_s8(vshr_n_s8(x_filter_8tap, 1), vdup_n_s8(0), 2);
+ const int32x4_t correction_4tap = vshrq_n_s32(correction_8tap, 1);
+ vpx_convolve_4tap_horiz_neon_dotprod(src - 1, src_stride, dst, dst_stride,
+ w, h, x_filter_4tap, correction_4tap,
+ range_limit);
+
+ } else {
+ vpx_convolve_8tap_horiz_neon_dotprod(src - 3, src_stride, dst, dst_stride,
+ w, h, x_filter_8tap, correction_8tap,
+ range_limit);
+ }
+}
+
+void vpx_convolve8_avg_horiz_neon_dotprod(const uint8_t *src,
+ ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride,
+ const InterpKernel *filter, int x0_q4,
+ int x_step_q4, int y0_q4,
+ int y_step_q4, int w, int h) {
+ const int8x8_t filters = vmovn_s16(vld1q_s16(filter[x0_q4]));
+ const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[x0_q4]), 128);
+ const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
+ const uint8x16_t range_limit = vdupq_n_u8(128);
+ uint8x16_t s0, s1, s2, s3;
+
+ assert((intptr_t)dst % 4 == 0);
+ assert(dst_stride % 4 == 0);
+ assert(x_step_q4 == 16);
+
+ (void)x_step_q4;
+ (void)y0_q4;
+ (void)y_step_q4;
+
+ src -= 3;
+
+ if (w == 4) {
+ const uint8x16x2_t perm_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
+ do {
+ int16x4_t t0, t1, t2, t3;
+ uint8x8_t d01, d23, dd01, dd23;
+
+ load_u8_16x4(src, src_stride, &s0, &s1, &s2, &s3);
+
+ t0 = convolve8_4_sdot(s0, filters, correction, range_limit, perm_tbl);
+ t1 = convolve8_4_sdot(s1, filters, correction, range_limit, perm_tbl);
+ t2 = convolve8_4_sdot(s2, filters, correction, range_limit, perm_tbl);
+ t3 = convolve8_4_sdot(s3, filters, correction, range_limit, perm_tbl);
+ d01 = vqrshrun_n_s16(vcombine_s16(t0, t1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(t2, t3), FILTER_BITS);
+
+ dd01 = load_u8(dst + 0 * dst_stride, dst_stride);
+ dd23 = load_u8(dst + 2 * dst_stride, dst_stride);
+
+ d01 = vrhadd_u8(d01, dd01);
+ d23 = vrhadd_u8(d23, dd23);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x3_t perm_tbl = vld1q_u8_x3(dot_prod_permute_tbl);
+ const uint8_t *s;
+ uint8_t *d;
+ int width;
+ uint8x8_t d0, d1, d2, d3, dd0, dd1, dd2, dd3;
+
+ do {
+ width = w;
+ s = src;
+ d = dst;
+ do {
+ load_u8_16x4(s, src_stride, &s0, &s1, &s2, &s3);
+
+ d0 = convolve8_8_sdot(s0, filters, correction, range_limit, perm_tbl);
+ d1 = convolve8_8_sdot(s1, filters, correction, range_limit, perm_tbl);
+ d2 = convolve8_8_sdot(s2, filters, correction, range_limit, perm_tbl);
+ d3 = convolve8_8_sdot(s3, filters, correction, range_limit, perm_tbl);
+
+ load_u8_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3);
+
+ d0 = vrhadd_u8(d0, dd0);
+ d1 = vrhadd_u8(d1, dd1);
+ d2 = vrhadd_u8(d2, dd2);
+ d3 = vrhadd_u8(d3, dd3);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ s += 8;
+ d += 8;
+ width -= 8;
+ } while (width != 0);
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ }
+}
+
+static INLINE void transpose_concat_4x4(int8x8_t a0, int8x8_t a1, int8x8_t a2,
+ int8x8_t a3, int8x16_t *b,
+ const uint8x16_t permute_tbl) {
+ /* Transpose 8-bit elements and concatenate result rows as follows:
+ * a0: 00, 01, 02, 03, XX, XX, XX, XX
+ * a1: 10, 11, 12, 13, XX, XX, XX, XX
+ * a2: 20, 21, 22, 23, XX, XX, XX, XX
+ * a3: 30, 31, 32, 33, XX, XX, XX, XX
+ *
+ * b: 00, 10, 20, 30, 01, 11, 21, 31, 02, 12, 22, 32, 03, 13, 23, 33
+ *
+ * The 'permute_tbl' is always 'dot_prod_tran_concat_tbl' above. Passing it
+ * as an argument is preferable to loading it directly from memory as this
+ * inline helper is called many times from the same parent function.
+ */
+
+ int8x16x2_t samples = { { vcombine_s8(a0, a1), vcombine_s8(a2, a3) } };
+ *b = vqtbl2q_s8(samples, permute_tbl);
+}
+
+static INLINE void transpose_concat_8x4(int8x8_t a0, int8x8_t a1, int8x8_t a2,
+ int8x8_t a3, int8x16_t *b0,
+ int8x16_t *b1,
+ const uint8x16x2_t permute_tbl) {
+ /* Transpose 8-bit elements and concatenate result rows as follows:
+ * a0: 00, 01, 02, 03, 04, 05, 06, 07
+ * a1: 10, 11, 12, 13, 14, 15, 16, 17
+ * a2: 20, 21, 22, 23, 24, 25, 26, 27
+ * a3: 30, 31, 32, 33, 34, 35, 36, 37
+ *
+ * b0: 00, 10, 20, 30, 01, 11, 21, 31, 02, 12, 22, 32, 03, 13, 23, 33
+ * b1: 04, 14, 24, 34, 05, 15, 25, 35, 06, 16, 26, 36, 07, 17, 27, 37
+ *
+ * The 'permute_tbl' is always 'dot_prod_tran_concat_tbl' above. Passing it
+ * as an argument is preferable to loading it directly from memory as this
+ * inline helper is called many times from the same parent function.
+ */
+
+ int8x16x2_t samples = { { vcombine_s8(a0, a1), vcombine_s8(a2, a3) } };
+ *b0 = vqtbl2q_s8(samples, permute_tbl.val[0]);
+ *b1 = vqtbl2q_s8(samples, permute_tbl.val[1]);
+}
+
+static INLINE void vpx_convolve_4tap_vert_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x8_t range_limit) {
+ const uint8x16x3_t merge_block_tbl = vld1q_u8_x3(dot_prod_merge_block_tbl);
+ uint8x8_t t0, t1, t2, t3, t4, t5, t6;
+ int8x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
+ int8x16x2_t samples_LUT;
+
+ if (w == 4) {
+ const uint8x16_t tran_concat_tbl = vld1q_u8(dot_prod_tran_concat_tbl);
+ int8x16_t s0123, s1234, s2345, s3456, s78910;
+ int16x4_t d0, d1, d2, d3;
+ uint8x8_t d01, d23;
+
+ load_u8_8x7(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ src += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_4x4(s0, s1, s2, s3, &s0123, tran_concat_tbl);
+ transpose_concat_4x4(s1, s2, s3, s4, &s1234, tran_concat_tbl);
+ transpose_concat_4x4(s2, s3, s4, s5, &s2345, tran_concat_tbl);
+ transpose_concat_4x4(s3, s4, s5, s6, &s3456, tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+ load_u8_8x4(src, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_4x4(s7, s8, s9, s10, &s78910, tran_concat_tbl);
+
+ d0 = convolve4_4_sdot_partial(s0123, correction, filter);
+ d1 = convolve4_4_sdot_partial(s1234, correction, filter);
+ d2 = convolve4_4_sdot_partial(s2345, correction, filter);
+ d3 = convolve4_4_sdot_partial(s3456, correction, filter);
+ /* We halved the filter values so -1 from right shift. */
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS - 1);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS - 1);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456;
+ samples_LUT.val[1] = s78910;
+ s0123 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s1234 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s2345 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+ s3456 = s78910;
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x2_t tran_concat_tbl = vld1q_u8_x2(dot_prod_tran_concat_tbl);
+ int8x16_t s0123_lo, s0123_hi, s1234_lo, s1234_hi, s2345_lo, s2345_hi,
+ s3456_lo, s3456_hi, s78910_lo, s78910_hi;
+ uint8x8_t d0, d1, d2, d3;
+ const uint8_t *s;
+ uint8_t *d;
+ int height;
+
+ do {
+ height = h;
+ s = src;
+ d = dst;
+
+ load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ s += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_8x4(s0, s1, s2, s3, &s0123_lo, &s0123_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s1, s2, s3, s4, &s1234_lo, &s1234_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s2, s3, s4, s5, &s2345_lo, &s2345_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s3, s4, s5, s6, &s3456_lo, &s3456_hi,
+ tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+ load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_8x4(s7, s8, s9, s10, &s78910_lo, &s78910_hi,
+ tran_concat_tbl);
+
+ d0 = convolve4_8_sdot_partial(s0123_lo, s0123_hi, correction, filter);
+ d1 = convolve4_8_sdot_partial(s1234_lo, s1234_hi, correction, filter);
+ d2 = convolve4_8_sdot_partial(s2345_lo, s2345_hi, correction, filter);
+ d3 = convolve4_8_sdot_partial(s3456_lo, s3456_hi, correction, filter);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456_lo;
+ samples_LUT.val[1] = s78910_lo;
+ s0123_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s1234_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s2345_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+ s3456_lo = s78910_lo;
+
+ samples_LUT.val[0] = s3456_hi;
+ samples_LUT.val[1] = s78910_hi;
+ s0123_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s1234_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s2345_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+ s3456_hi = s78910_hi;
+
+ s += 4 * src_stride;
+ d += 4 * dst_stride;
+ height -= 4;
+ } while (height != 0);
+ src += 8;
+ dst += 8;
+ w -= 8;
+ } while (w != 0);
+ }
+}
+
+static INLINE void vpx_convolve_8tap_vert_neon_dotprod(
+ const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, int w, int h, const int8x8_t filter,
+ const int32x4_t correction, const uint8x8_t range_limit) {
+ const uint8x16x3_t merge_block_tbl = vld1q_u8_x3(dot_prod_merge_block_tbl);
+ uint8x8_t t0, t1, t2, t3, t4, t5, t6;
+ int8x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
+ int8x16x2_t samples_LUT;
+
+ if (w == 4) {
+ const uint8x16_t tran_concat_tbl = vld1q_u8(dot_prod_tran_concat_tbl);
+ int8x16_t s0123, s1234, s2345, s3456, s4567, s5678, s6789, s78910;
+ int16x4_t d0, d1, d2, d3;
+ uint8x8_t d01, d23;
+
+ load_u8_8x7(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ src += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_4x4(s0, s1, s2, s3, &s0123, tran_concat_tbl);
+ transpose_concat_4x4(s1, s2, s3, s4, &s1234, tran_concat_tbl);
+ transpose_concat_4x4(s2, s3, s4, s5, &s2345, tran_concat_tbl);
+ transpose_concat_4x4(s3, s4, s5, s6, &s3456, tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+
+ load_u8_8x4(src, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_4x4(s7, s8, s9, s10, &s78910, tran_concat_tbl);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456;
+ samples_LUT.val[1] = s78910;
+ s4567 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ d0 = convolve8_4_sdot_partial(s0123, s4567, correction, filter);
+ d1 = convolve8_4_sdot_partial(s1234, s5678, correction, filter);
+ d2 = convolve8_4_sdot_partial(s2345, s6789, correction, filter);
+ d3 = convolve8_4_sdot_partial(s3456, s78910, correction, filter);
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ /* Prepare block for next iteration - re-using as much as possible. */
+ /* Shuffle everything up four rows. */
+ s0123 = s4567;
+ s1234 = s5678;
+ s2345 = s6789;
+ s3456 = s78910;
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x2_t tran_concat_tbl = vld1q_u8_x2(dot_prod_tran_concat_tbl);
+ int8x16_t s0123_lo, s0123_hi, s1234_lo, s1234_hi, s2345_lo, s2345_hi,
+ s3456_lo, s3456_hi, s4567_lo, s4567_hi, s5678_lo, s5678_hi, s6789_lo,
+ s6789_hi, s78910_lo, s78910_hi;
+ uint8x8_t d0, d1, d2, d3;
+ const uint8_t *s;
+ uint8_t *d;
+ int height;
+
+ do {
+ height = h;
+ s = src;
+ d = dst;
+
+ load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ s += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_8x4(s0, s1, s2, s3, &s0123_lo, &s0123_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s1, s2, s3, s4, &s1234_lo, &s1234_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s2, s3, s4, s5, &s2345_lo, &s2345_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s3, s4, s5, s6, &s3456_lo, &s3456_hi,
+ tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+
+ load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_8x4(s7, s8, s9, s10, &s78910_lo, &s78910_hi,
+ tran_concat_tbl);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456_lo;
+ samples_LUT.val[1] = s78910_lo;
+ s4567_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ samples_LUT.val[0] = s3456_hi;
+ samples_LUT.val[1] = s78910_hi;
+ s4567_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ d0 = convolve8_8_sdot_partial(s0123_lo, s4567_lo, s0123_hi, s4567_hi,
+ correction, filter);
+ d1 = convolve8_8_sdot_partial(s1234_lo, s5678_lo, s1234_hi, s5678_hi,
+ correction, filter);
+ d2 = convolve8_8_sdot_partial(s2345_lo, s6789_lo, s2345_hi, s6789_hi,
+ correction, filter);
+ d3 = convolve8_8_sdot_partial(s3456_lo, s78910_lo, s3456_hi, s78910_hi,
+ correction, filter);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ /* Prepare block for next iteration - re-using as much as possible. */
+ /* Shuffle everything up four rows. */
+ s0123_lo = s4567_lo;
+ s0123_hi = s4567_hi;
+ s1234_lo = s5678_lo;
+ s1234_hi = s5678_hi;
+ s2345_lo = s6789_lo;
+ s2345_hi = s6789_hi;
+ s3456_lo = s78910_lo;
+ s3456_hi = s78910_hi;
+
+ s += 4 * src_stride;
+ d += 4 * dst_stride;
+ height -= 4;
+ } while (height != 0);
+ src += 8;
+ dst += 8;
+ w -= 8;
+ } while (w != 0);
+ }
+}
+
+void vpx_convolve8_vert_neon_dotprod(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *filter, int x0_q4,
+ int x_step_q4, int y0_q4, int y_step_q4,
+ int w, int h) {
+ const int8x8_t y_filter_8tap = vmovn_s16(vld1q_s16(filter[y0_q4]));
+ const int32x4_t correction_8tap =
+ vdupq_n_s32(vaddlvq_s16(vshll_n_s8(y_filter_8tap, FILTER_BITS)));
+ const uint8x8_t range_limit = vdup_n_u8(128);
+
+ assert((intptr_t)dst % 4 == 0);
+ assert(dst_stride % 4 == 0);
+ assert(y_step_q4 == 16);
+
+ (void)x0_q4;
+ (void)x_step_q4;
+ (void)y_step_q4;
+
+ if (vpx_get_filter_taps(filter[y0_q4]) <= 4) {
+ /* All 4-tap and bilinear filter values are even, so halve them to reduce
+ * intermediate precision requirements. Also slide the filter values so the
+ * the 4 taps exist in the first 4 elements of the vector.
+ */
+ const int8x8_t y_filter_4tap =
+ vext_s8(vshr_n_s8(y_filter_8tap, 1), vdup_n_s8(0), 2);
+ const int32x4_t correction_4tap = vshrq_n_s32(correction_8tap, 1);
+ vpx_convolve_4tap_vert_neon_dotprod(src - src_stride, src_stride, dst,
+ dst_stride, w, h, y_filter_4tap,
+ correction_4tap, range_limit);
+ } else {
+ vpx_convolve_8tap_vert_neon_dotprod(src - 3 * src_stride, src_stride, dst,
+ dst_stride, w, h, y_filter_8tap,
+ correction_8tap, range_limit);
+ }
+}
+
+void vpx_convolve8_avg_vert_neon_dotprod(const uint8_t *src,
+ ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride,
+ const InterpKernel *filter, int x0_q4,
+ int x_step_q4, int y0_q4,
+ int y_step_q4, int w, int h) {
+ const int8x8_t filters = vmovn_s16(vld1q_s16(filter[y0_q4]));
+ const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[y0_q4]), 128);
+ const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
+ const uint8x8_t range_limit = vdup_n_u8(128);
+ const uint8x16x3_t merge_block_tbl = vld1q_u8_x3(dot_prod_merge_block_tbl);
+ uint8x8_t t0, t1, t2, t3, t4, t5, t6;
+ int8x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
+ int8x16x2_t samples_LUT;
+
+ assert((intptr_t)dst % 4 == 0);
+ assert(dst_stride % 4 == 0);
+ assert(y_step_q4 == 16);
+
+ (void)x0_q4;
+ (void)x_step_q4;
+ (void)y_step_q4;
+
+ src -= 3 * src_stride;
+
+ if (w == 4) {
+ const uint8x16_t tran_concat_tbl = vld1q_u8(dot_prod_tran_concat_tbl);
+ int8x16_t s0123, s1234, s2345, s3456, s4567, s5678, s6789, s78910;
+ int16x4_t d0, d1, d2, d3;
+ uint8x8_t d01, d23, dd01, dd23;
+
+ load_u8_8x7(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ src += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_4x4(s0, s1, s2, s3, &s0123, tran_concat_tbl);
+ transpose_concat_4x4(s1, s2, s3, s4, &s1234, tran_concat_tbl);
+ transpose_concat_4x4(s2, s3, s4, s5, &s2345, tran_concat_tbl);
+ transpose_concat_4x4(s3, s4, s5, s6, &s3456, tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+
+ load_u8_8x4(src, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_4x4(s7, s8, s9, s10, &s78910, tran_concat_tbl);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456;
+ samples_LUT.val[1] = s78910;
+ s4567 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ d0 = convolve8_4_sdot_partial(s0123, s4567, correction, filters);
+ d1 = convolve8_4_sdot_partial(s1234, s5678, correction, filters);
+ d2 = convolve8_4_sdot_partial(s2345, s6789, correction, filters);
+ d3 = convolve8_4_sdot_partial(s3456, s78910, correction, filters);
+ d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
+ d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS);
+
+ dd01 = load_u8(dst + 0 * dst_stride, dst_stride);
+ dd23 = load_u8(dst + 2 * dst_stride, dst_stride);
+
+ d01 = vrhadd_u8(d01, dd01);
+ d23 = vrhadd_u8(d23, dd23);
+
+ store_u8(dst + 0 * dst_stride, dst_stride, d01);
+ store_u8(dst + 2 * dst_stride, dst_stride, d23);
+
+ /* Prepare block for next iteration - re-using as much as possible. */
+ /* Shuffle everything up four rows. */
+ s0123 = s4567;
+ s1234 = s5678;
+ s2345 = s6789;
+ s3456 = s78910;
+
+ src += 4 * src_stride;
+ dst += 4 * dst_stride;
+ h -= 4;
+ } while (h != 0);
+ } else {
+ const uint8x16x2_t tran_concat_tbl = vld1q_u8_x2(dot_prod_tran_concat_tbl);
+ int8x16_t s0123_lo, s0123_hi, s1234_lo, s1234_hi, s2345_lo, s2345_hi,
+ s3456_lo, s3456_hi, s4567_lo, s4567_hi, s5678_lo, s5678_hi, s6789_lo,
+ s6789_hi, s78910_lo, s78910_hi;
+ uint8x8_t d0, d1, d2, d3, dd0, dd1, dd2, dd3;
+ const uint8_t *s;
+ uint8_t *d;
+ int height;
+
+ do {
+ height = h;
+ s = src;
+ d = dst;
+
+ load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
+ s += 7 * src_stride;
+
+ /* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
+ s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
+ s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
+ s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
+ s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
+ s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
+ s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
+ s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
+
+ /* This operation combines a conventional transpose and the sample permute
+ * (see horizontal case) required before computing the dot product.
+ */
+ transpose_concat_8x4(s0, s1, s2, s3, &s0123_lo, &s0123_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s1, s2, s3, s4, &s1234_lo, &s1234_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s2, s3, s4, s5, &s2345_lo, &s2345_hi,
+ tran_concat_tbl);
+ transpose_concat_8x4(s3, s4, s5, s6, &s3456_lo, &s3456_hi,
+ tran_concat_tbl);
+
+ do {
+ uint8x8_t t7, t8, t9, t10;
+
+ load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
+
+ s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
+ s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
+ s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
+ s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
+
+ transpose_concat_8x4(s7, s8, s9, s10, &s78910_lo, &s78910_hi,
+ tran_concat_tbl);
+
+ /* Merge new data into block from previous iteration. */
+ samples_LUT.val[0] = s3456_lo;
+ samples_LUT.val[1] = s78910_lo;
+ s4567_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ samples_LUT.val[0] = s3456_hi;
+ samples_LUT.val[1] = s78910_hi;
+ s4567_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
+ s5678_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
+ s6789_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
+
+ d0 = convolve8_8_sdot_partial(s0123_lo, s4567_lo, s0123_hi, s4567_hi,
+ correction, filters);
+ d1 = convolve8_8_sdot_partial(s1234_lo, s5678_lo, s1234_hi, s5678_hi,
+ correction, filters);
+ d2 = convolve8_8_sdot_partial(s2345_lo, s6789_lo, s2345_hi, s6789_hi,
+ correction, filters);
+ d3 = convolve8_8_sdot_partial(s3456_lo, s78910_lo, s3456_hi, s78910_hi,
+ correction, filters);
+
+ load_u8_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3);
+
+ d0 = vrhadd_u8(d0, dd0);
+ d1 = vrhadd_u8(d1, dd1);
+ d2 = vrhadd_u8(d2, dd2);
+ d3 = vrhadd_u8(d3, dd3);
+
+ store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
+
+ /* Prepare block for next iteration - re-using as much as possible. */
+ /* Shuffle everything up four rows. */
+ s0123_lo = s4567_lo;
+ s0123_hi = s4567_hi;
+ s1234_lo = s5678_lo;
+ s1234_hi = s5678_hi;
+ s2345_lo = s6789_lo;
+ s2345_hi = s6789_hi;
+ s3456_lo = s78910_lo;
+ s3456_hi = s78910_hi;
+
+ s += 4 * src_stride;
+ d += 4 * dst_stride;
+ height -= 4;
+ } while (height != 0);
+ src += 8;
+ dst += 8;
+ w -= 8;
+ } while (w != 0);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-06 13:45:16 +0000