| /* |
| * Copyright (c) 2016, 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 "config/aom_dsp_rtcd.h" |
| #include "config/aom_config.h" |
| |
| #include "aom_ports/mem.h" |
| #include "aom/aom_integer.h" |
| |
| #include "aom_dsp/variance.h" |
| #include "aom_dsp/arm/mem_neon.h" |
| |
| static void var_filter_block2d_bil_w4(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_height, int filter_offset) { |
| const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); |
| const uint8x8_t f1 = vdup_n_u8(filter_offset); |
| |
| int i = 0; |
| do { |
| uint8x8_t s0 = load_unaligned_u8(src_ptr, src_stride); |
| uint8x8_t s1 = load_unaligned_u8(src_ptr + pixel_step, src_stride); |
| uint16x8_t blend = vmull_u8(s0, f0); |
| blend = vmlal_u8(blend, s1, f1); |
| uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); |
| vst1_u8(dst_ptr, blend_u8); |
| |
| src_ptr += 2 * src_stride; |
| dst_ptr += 2 * 4; |
| i += 2; |
| } while (i < dst_height); |
| } |
| |
| static void var_filter_block2d_bil_w8(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_height, int filter_offset) { |
| const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); |
| const uint8x8_t f1 = vdup_n_u8(filter_offset); |
| |
| int i = 0; |
| do { |
| uint8x8_t s0 = vld1_u8(src_ptr); |
| uint8x8_t s1 = vld1_u8(src_ptr + pixel_step); |
| uint16x8_t blend = vmull_u8(s0, f0); |
| blend = vmlal_u8(blend, s1, f1); |
| uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); |
| vst1_u8(dst_ptr, blend_u8); |
| |
| src_ptr += src_stride; |
| dst_ptr += 8; |
| i++; |
| } while (i < dst_height); |
| } |
| |
| static void var_filter_block2d_bil_large(const uint8_t *src_ptr, |
| uint8_t *dst_ptr, int src_stride, |
| int pixel_step, int dst_width, |
| int dst_height, int filter_offset) { |
| const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); |
| const uint8x8_t f1 = vdup_n_u8(filter_offset); |
| |
| int i = 0; |
| do { |
| int j = 0; |
| do { |
| uint8x16_t s0 = vld1q_u8(src_ptr + j); |
| uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); |
| uint16x8_t blend_l = vmull_u8(vget_low_u8(s0), f0); |
| blend_l = vmlal_u8(blend_l, vget_low_u8(s1), f1); |
| uint16x8_t blend_h = vmull_u8(vget_high_u8(s0), f0); |
| blend_h = vmlal_u8(blend_h, vget_high_u8(s1), f1); |
| uint8x16_t blend_u8 = |
| vcombine_u8(vrshrn_n_u16(blend_l, 3), vrshrn_n_u16(blend_h, 3)); |
| vst1q_u8(dst_ptr + j, blend_u8); |
| |
| j += 16; |
| } while (j < dst_width); |
| |
| src_ptr += src_stride; |
| dst_ptr += dst_width; |
| i++; |
| } while (i < dst_height); |
| } |
| |
| static void var_filter_block2d_bil_w16(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_height, int filter_offset) { |
| var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 16, |
| dst_height, filter_offset); |
| } |
| |
| static void var_filter_block2d_bil_w32(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_height, int filter_offset) { |
| var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 32, |
| dst_height, filter_offset); |
| } |
| |
| static void var_filter_block2d_bil_w64(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_height, int filter_offset) { |
| var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 64, |
| dst_height, filter_offset); |
| } |
| |
| static void var_filter_block2d_bil_w128(const uint8_t *src_ptr, |
| uint8_t *dst_ptr, int src_stride, |
| int pixel_step, int dst_height, |
| int filter_offset) { |
| var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 128, |
| dst_height, filter_offset); |
| } |
| |
| static void var_filter_block2d_avg(const uint8_t *src_ptr, uint8_t *dst_ptr, |
| int src_stride, int pixel_step, |
| int dst_width, int dst_height) { |
| // We only specialise on the filter values for large block sizes (>= 16x16.) |
| assert(dst_width >= 16 && dst_width % 16 == 0); |
| |
| int i = 0; |
| do { |
| int j = 0; |
| do { |
| uint8x16_t s0 = vld1q_u8(src_ptr + j); |
| uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); |
| uint8x16_t avg = vrhaddq_u8(s0, s1); |
| vst1q_u8(dst_ptr + j, avg); |
| |
| j += 16; |
| } while (j < dst_width); |
| |
| src_ptr += src_stride; |
| dst_ptr += dst_width; |
| i++; |
| } while (i < dst_height); |
| } |
| |
| #define SUBPEL_VARIANCE_WXH_NEON(w, h, padding) \ |
| unsigned int aom_sub_pixel_variance##w##x##h##_neon( \ |
| const uint8_t *src, int src_stride, int xoffset, int yoffset, \ |
| const uint8_t *ref, int ref_stride, uint32_t *sse) { \ |
| uint8_t tmp0[w * (h + padding)]; \ |
| uint8_t tmp1[w * h]; \ |
| var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, (h + padding), \ |
| xoffset); \ |
| var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ |
| return aom_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ |
| } |
| |
| #define SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(w, h, padding) \ |
| unsigned int aom_sub_pixel_variance##w##x##h##_neon( \ |
| const uint8_t *src, int src_stride, int xoffset, int yoffset, \ |
| const uint8_t *ref, int ref_stride, unsigned int *sse) { \ |
| if (xoffset == 0) { \ |
| if (yoffset == 0) { \ |
| return aom_variance##w##x##h##_neon(src, src_stride, ref, ref_stride, \ |
| sse); \ |
| } else if (yoffset == 4) { \ |
| uint8_t tmp[w * h]; \ |
| var_filter_block2d_avg(src, tmp, src_stride, src_stride, w, h); \ |
| return aom_variance##w##x##h##_neon(tmp, w, ref, ref_stride, sse); \ |
| } else { \ |
| uint8_t tmp[w * h]; \ |
| var_filter_block2d_bil_w##w(src, tmp, src_stride, src_stride, h, \ |
| yoffset); \ |
| return aom_variance##w##x##h##_neon(tmp, w, ref, ref_stride, sse); \ |
| } \ |
| } else if (xoffset == 4) { \ |
| uint8_t tmp0[w * (h + padding)]; \ |
| var_filter_block2d_avg(src, tmp0, src_stride, 1, w, h + padding); \ |
| if (yoffset == 0) { \ |
| return aom_variance##w##x##h##_neon(tmp0, w, ref, ref_stride, sse); \ |
| } else if (yoffset == 4) { \ |
| uint8_t tmp1[w * (h + padding)]; \ |
| var_filter_block2d_avg(tmp0, tmp1, w, w, w, h); \ |
| return aom_variance##w##x##h##_neon(tmp1, w, ref, ref_stride, sse); \ |
| } else { \ |
| uint8_t tmp1[w * (h + padding)]; \ |
| var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ |
| return aom_variance##w##x##h##_neon(tmp1, w, ref, ref_stride, sse); \ |
| } \ |
| } else { \ |
| uint8_t tmp0[w * (h + padding)]; \ |
| var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, (h + padding), \ |
| xoffset); \ |
| if (yoffset == 0) { \ |
| return aom_variance##w##x##h##_neon(tmp0, w, ref, ref_stride, sse); \ |
| } else if (yoffset == 4) { \ |
| uint8_t tmp1[w * h]; \ |
| var_filter_block2d_avg(tmp0, tmp1, w, w, w, h); \ |
| return aom_variance##w##x##h##_neon(tmp1, w, ref, ref_stride, sse); \ |
| } else { \ |
| uint8_t tmp1[w * h]; \ |
| var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ |
| return aom_variance##w##x##h##_neon(tmp1, w, ref, ref_stride, sse); \ |
| } \ |
| } \ |
| } |
| |
| SUBPEL_VARIANCE_WXH_NEON(4, 4, 2) |
| SUBPEL_VARIANCE_WXH_NEON(4, 8, 2) |
| |
| SUBPEL_VARIANCE_WXH_NEON(8, 4, 1) |
| SUBPEL_VARIANCE_WXH_NEON(8, 8, 1) |
| SUBPEL_VARIANCE_WXH_NEON(8, 16, 1) |
| |
| SUBPEL_VARIANCE_WXH_NEON(16, 8, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 16, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 32, 1) |
| |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 16, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 32, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 64, 1) |
| |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 32, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 64, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 128, 1) |
| |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(128, 64, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(128, 128, 1) |
| |
| // Realtime mode doesn't use 4x rectangular blocks. |
| #if !CONFIG_REALTIME_ONLY |
| |
| SUBPEL_VARIANCE_WXH_NEON(4, 16, 2) |
| |
| SUBPEL_VARIANCE_WXH_NEON(8, 32, 1) |
| |
| SUBPEL_VARIANCE_WXH_NEON(16, 4, 1) |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 64, 1) |
| |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 8, 1) |
| |
| SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 16, 1) |
| |
| #endif // !CONFIG_REALTIME_ONLY |
| |
| #undef SUBPEL_VARIANCE_WXH_NEON |
| #undef SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON |
