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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/arm/sum_squares_neon_dotprod.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/sum_squares_neon_dotprod.c b/third_party/aom/aom_dsp/arm/sum_squares_neon_dotprod.c new file mode 100644 index 0000000000..44462a693c --- /dev/null +++ b/third_party/aom/aom_dsp/arm/sum_squares_neon_dotprod.c @@ -0,0 +1,154 @@ +/* + * Copyright (c) 2023, 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 "aom_dsp/arm/mem_neon.h" +#include "aom_dsp/arm/sum_neon.h" +#include "config/aom_dsp_rtcd.h" + +static INLINE uint64_t aom_var_2d_u8_4xh_neon_dotprod(uint8_t *src, + int src_stride, int width, + int height) { + uint64_t sum = 0; + uint64_t sse = 0; + uint32x2_t sum_u32 = vdup_n_u32(0); + uint32x2_t sse_u32 = vdup_n_u32(0); + + int h = height / 2; + do { + int w = width; + uint8_t *src_ptr = src; + do { + uint8x8_t s0 = load_unaligned_u8(src_ptr, src_stride); + + sum_u32 = vdot_u32(sum_u32, s0, vdup_n_u8(1)); + + sse_u32 = vdot_u32(sse_u32, s0, s0); + + src_ptr += 8; + w -= 8; + } while (w >= 8); + + // Process remaining columns in the row using C. + while (w > 0) { + int idx = width - w; + const uint8_t v = src[idx]; + sum += v; + sse += v * v; + w--; + } + + src += 2 * src_stride; + } while (--h != 0); + + sum += horizontal_long_add_u32x2(sum_u32); + sse += horizontal_long_add_u32x2(sse_u32); + + return sse - sum * sum / (width * height); +} + +static INLINE uint64_t aom_var_2d_u8_8xh_neon_dotprod(uint8_t *src, + int src_stride, int width, + int height) { + uint64_t sum = 0; + uint64_t sse = 0; + uint32x2_t sum_u32 = vdup_n_u32(0); + uint32x2_t sse_u32 = vdup_n_u32(0); + + int h = height; + do { + int w = width; + uint8_t *src_ptr = src; + do { + uint8x8_t s0 = vld1_u8(src_ptr); + + sum_u32 = vdot_u32(sum_u32, s0, vdup_n_u8(1)); + + sse_u32 = vdot_u32(sse_u32, s0, s0); + + src_ptr += 8; + w -= 8; + } while (w >= 8); + + // Process remaining columns in the row using C. + while (w > 0) { + int idx = width - w; + const uint8_t v = src[idx]; + sum += v; + sse += v * v; + w--; + } + + src += src_stride; + } while (--h != 0); + + sum += horizontal_long_add_u32x2(sum_u32); + sse += horizontal_long_add_u32x2(sse_u32); + + return sse - sum * sum / (width * height); +} + +static INLINE uint64_t aom_var_2d_u8_16xh_neon_dotprod(uint8_t *src, + int src_stride, + int width, int height) { + uint64_t sum = 0; + uint64_t sse = 0; + uint32x4_t sum_u32 = vdupq_n_u32(0); + uint32x4_t sse_u32 = vdupq_n_u32(0); + + int h = height; + do { + int w = width; + uint8_t *src_ptr = src; + do { + uint8x16_t s0 = vld1q_u8(src_ptr); + + sum_u32 = vdotq_u32(sum_u32, s0, vdupq_n_u8(1)); + + sse_u32 = vdotq_u32(sse_u32, s0, s0); + + src_ptr += 16; + w -= 16; + } while (w >= 16); + + // Process remaining columns in the row using C. + while (w > 0) { + int idx = width - w; + const uint8_t v = src[idx]; + sum += v; + sse += v * v; + w--; + } + + src += src_stride; + } while (--h != 0); + + sum += horizontal_long_add_u32x4(sum_u32); + sse += horizontal_long_add_u32x4(sse_u32); + + return sse - sum * sum / (width * height); +} + +uint64_t aom_var_2d_u8_neon_dotprod(uint8_t *src, int src_stride, int width, + int height) { + if (width >= 16) { + return aom_var_2d_u8_16xh_neon_dotprod(src, src_stride, width, height); + } + if (width >= 8) { + return aom_var_2d_u8_8xh_neon_dotprod(src, src_stride, width, height); + } + if (width >= 4 && height % 2 == 0) { + return aom_var_2d_u8_4xh_neon_dotprod(src, src_stride, width, height); + } + return aom_var_2d_u8_c(src, src_stride, width, height); +} |