| /* |
| * Copyright (c) 2019, 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 <assert.h> |
| #include <emmintrin.h> |
| |
| #include "config/av1_rtcd.h" |
| #include "av1/encoder/encoder.h" |
| #include "av1/encoder/temporal_filter.h" |
| |
| // For the squared error buffer, keep a padding for 4 samples |
| #define SSE_STRIDE (BW + 4) |
| |
| DECLARE_ALIGNED(32, static const uint32_t, sse_bytemask_2x4[4][2][4]) = { |
| { { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }, |
| { 0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000 } }, |
| { { 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }, |
| { 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000 } }, |
| { { 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF }, |
| { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000 } }, |
| { { 0x00000000, 0x00000000, 0x00000000, 0xFFFFFFFF }, |
| { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF } } |
| }; |
| |
| static void get_squared_error(const uint8_t *frame1, const unsigned int stride, |
| const uint8_t *frame2, const unsigned int stride2, |
| const int block_width, const int block_height, |
| uint16_t *frame_sse, |
| const unsigned int dst_stride) { |
| const uint8_t *src1 = frame1; |
| const uint8_t *src2 = frame2; |
| uint16_t *dst = frame_sse; |
| |
| for (int i = 0; i < block_height; i++) { |
| for (int j = 0; j < block_width; j += 16) { |
| // Set zero to unitialized memory to avoid uninitialized loads later |
| *(uint32_t *)(dst) = _mm_cvtsi128_si32(_mm_setzero_si128()); |
| |
| __m128i vsrc1 = _mm_loadu_si128((__m128i *)(src1 + j)); |
| __m128i vsrc2 = _mm_loadu_si128((__m128i *)(src2 + j)); |
| |
| __m128i vmax = _mm_max_epu8(vsrc1, vsrc2); |
| __m128i vmin = _mm_min_epu8(vsrc1, vsrc2); |
| __m128i vdiff = _mm_subs_epu8(vmax, vmin); |
| |
| __m128i vzero = _mm_setzero_si128(); |
| __m128i vdiff1 = _mm_unpacklo_epi8(vdiff, vzero); |
| __m128i vdiff2 = _mm_unpackhi_epi8(vdiff, vzero); |
| |
| __m128i vres1 = _mm_mullo_epi16(vdiff1, vdiff1); |
| __m128i vres2 = _mm_mullo_epi16(vdiff2, vdiff2); |
| |
| _mm_storeu_si128((__m128i *)(dst + j + 2), vres1); |
| _mm_storeu_si128((__m128i *)(dst + j + 10), vres2); |
| } |
| |
| // Set zero to unitialized memory to avoid uninitialized loads later |
| *(uint32_t *)(dst + block_width + 2) = |
| _mm_cvtsi128_si32(_mm_setzero_si128()); |
| |
| src1 += stride; |
| src2 += stride2; |
| dst += dst_stride; |
| } |
| } |
| |
| static void xx_load_and_pad(uint16_t *src, __m128i *dstvec, int col, |
| int block_width) { |
| __m128i vtmp = _mm_loadu_si128((__m128i *)src); |
| __m128i vzero = _mm_setzero_si128(); |
| __m128i vtmp1 = _mm_unpacklo_epi16(vtmp, vzero); |
| __m128i vtmp2 = _mm_unpackhi_epi16(vtmp, vzero); |
| // For the first column, replicate the first element twice to the left |
| dstvec[0] = (col) ? vtmp1 : _mm_shuffle_epi32(vtmp1, 0xEA); |
| // For the last column, replicate the last element twice to the right |
| dstvec[1] = (col < block_width - 4) ? vtmp2 : _mm_shuffle_epi32(vtmp2, 0x54); |
| } |
| |
| static int32_t xx_mask_and_hadd(__m128i vsum1, __m128i vsum2, int i) { |
| __m128i veca, vecb; |
| // Mask and obtain the required 5 values inside the vector |
| veca = _mm_and_si128(vsum1, *(__m128i *)sse_bytemask_2x4[i][0]); |
| vecb = _mm_and_si128(vsum2, *(__m128i *)sse_bytemask_2x4[i][1]); |
| // A = [A0+B0, A1+B1, A2+B2, A3+B3] |
| veca = _mm_add_epi32(veca, vecb); |
| // B = [A2+B2, A3+B3, 0, 0] |
| vecb = _mm_srli_si128(veca, 8); |
| // A = [A0+B0+A2+B2, A1+B1+A3+B3, X, X] |
| veca = _mm_add_epi32(veca, vecb); |
| // B = [A1+B1+A3+B3, 0, 0, 0] |
| vecb = _mm_srli_si128(veca, 4); |
| // A = [A0+B0+A2+B2+A1+B1+A3+B3, X, X, X] |
| veca = _mm_add_epi32(veca, vecb); |
| return _mm_cvtsi128_si32(veca); |
| } |
| |
| static void apply_temporal_filter_planewise( |
| const uint8_t *frame1, const unsigned int stride, const uint8_t *frame2, |
| const unsigned int stride2, const int block_width, const int block_height, |
| const double sigma, const int decay_control, unsigned int *accumulator, |
| uint16_t *count, uint16_t *luma_sq_error, uint16_t *chroma_sq_error, |
| int plane, int ss_x_shift, int ss_y_shift) { |
| assert(TF_PLANEWISE_FILTER_WINDOW_LENGTH == 5); |
| assert(((block_width == 32) && (block_height == 32)) || |
| ((block_width == 16) && (block_height == 16))); |
| if (plane > PLANE_TYPE_Y) assert(chroma_sq_error != NULL); |
| |
| uint32_t acc_5x5_sse[BH][BW]; |
| const double h = decay_control * (0.7 + log(sigma + 1.0)); |
| uint16_t *frame_sse = |
| (plane == PLANE_TYPE_Y) ? luma_sq_error : chroma_sq_error; |
| |
| get_squared_error(frame1, stride, frame2, stride2, block_width, block_height, |
| frame_sse, SSE_STRIDE); |
| |
| __m128i vsrc[5][2]; |
| |
| // Traverse 4 columns at a time |
| // First and last columns will require padding |
| for (int col = 0; col < block_width; col += 4) { |
| uint16_t *src = frame_sse + col; |
| |
| // Load and pad(for first and last col) 3 rows from the top |
| for (int i = 2; i < 5; i++) { |
| xx_load_and_pad(src, vsrc[i], col, block_width); |
| src += SSE_STRIDE; |
| } |
| |
| // Padding for top 2 rows |
| vsrc[0][0] = vsrc[2][0]; |
| vsrc[0][1] = vsrc[2][1]; |
| vsrc[1][0] = vsrc[2][0]; |
| vsrc[1][1] = vsrc[2][1]; |
| |
| for (int row = 0; row < block_height; row++) { |
| __m128i vsum1 = _mm_setzero_si128(); |
| __m128i vsum2 = _mm_setzero_si128(); |
| |
| // Add 5 consecutive rows |
| for (int i = 0; i < 5; i++) { |
| vsum1 = _mm_add_epi32(vsrc[i][0], vsum1); |
| vsum2 = _mm_add_epi32(vsrc[i][1], vsum2); |
| } |
| |
| // Push all elements by one element to the top |
| for (int i = 0; i < 4; i++) { |
| vsrc[i][0] = vsrc[i + 1][0]; |
| vsrc[i][1] = vsrc[i + 1][1]; |
| } |
| |
| if (row <= block_height - 4) { |
| // Load next row |
| xx_load_and_pad(src, vsrc[4], col, block_width); |
| src += SSE_STRIDE; |
| } else { |
| // Padding for bottom 2 rows |
| vsrc[4][0] = vsrc[3][0]; |
| vsrc[4][1] = vsrc[3][1]; |
| } |
| |
| // Accumulate the sum horizontally |
| for (int i = 0; i < 4; i++) { |
| acc_5x5_sse[row][col + i] = xx_mask_and_hadd(vsum1, vsum2, i); |
| } |
| } |
| } |
| |
| for (int i = 0, k = 0; i < block_height; i++) { |
| for (int j = 0; j < block_width; j++, k++) { |
| const int pixel_value = frame2[i * stride2 + j]; |
| |
| int diff_sse = acc_5x5_sse[i][j]; |
| int num_ref_pixels = |
| TF_PLANEWISE_FILTER_WINDOW_LENGTH * TF_PLANEWISE_FILTER_WINDOW_LENGTH; |
| |
| // Filter U-plane and V-plane using Y-plane. This is because motion |
| // search is only done on Y-plane, so the information from Y-plane will |
| // be more accurate. |
| if (plane != PLANE_TYPE_Y) { |
| for (int ii = 0; ii < (1 << ss_y_shift); ++ii) { |
| for (int jj = 0; jj < (1 << ss_x_shift); ++jj) { |
| const int yy = (i << ss_y_shift) + ii; // Y-coord on Y-plane. |
| const int xx = (j << ss_x_shift) + jj + 2; // X-coord on Y-plane. |
| const int ww = SSE_STRIDE; // Stride of Y-plane. |
| diff_sse += luma_sq_error[yy * ww + xx]; |
| ++num_ref_pixels; |
| } |
| } |
| } |
| |
| const double scaled_diff = |
| AOMMAX(-(double)(diff_sse / num_ref_pixels) / (2 * h * h), -15.0); |
| const int adjusted_weight = |
| (int)(exp(scaled_diff) * TF_PLANEWISE_FILTER_WEIGHT_SCALE); |
| |
| count[k] += adjusted_weight; |
| accumulator[k] += adjusted_weight * pixel_value; |
| } |
| } |
| } |
| |
| void av1_apply_temporal_filter_planewise_sse2( |
| const YV12_BUFFER_CONFIG *ref_frame, const MACROBLOCKD *mbd, |
| const BLOCK_SIZE block_size, const int mb_row, const int mb_col, |
| const int num_planes, const double *noise_levels, const uint8_t *pred, |
| uint32_t *accum, uint16_t *count) { |
| const int is_high_bitdepth = ref_frame->flags & YV12_FLAG_HIGHBITDEPTH; |
| if (is_high_bitdepth) { |
| assert(0 && "Only support low bit-depth with sse2!"); |
| } |
| assert(num_planes >= 1 && num_planes <= MAX_MB_PLANE); |
| |
| const int frame_height = ref_frame->heights[0] << mbd->plane[0].subsampling_y; |
| const int decay_control = frame_height >= 720 ? 4 : 3; |
| |
| const int mb_height = block_size_high[block_size]; |
| const int mb_width = block_size_wide[block_size]; |
| const int mb_pels = mb_height * mb_width; |
| uint16_t luma_sq_error[SSE_STRIDE * BH]; |
| uint16_t *chroma_sq_error = |
| (num_planes > 0) |
| ? (uint16_t *)aom_malloc(SSE_STRIDE * BH * sizeof(uint16_t)) |
| : NULL; |
| |
| for (int plane = 0; plane < num_planes; ++plane) { |
| const uint32_t plane_h = mb_height >> mbd->plane[plane].subsampling_y; |
| const uint32_t plane_w = mb_width >> mbd->plane[plane].subsampling_x; |
| const uint32_t frame_stride = ref_frame->strides[plane == 0 ? 0 : 1]; |
| const int frame_offset = mb_row * plane_h * frame_stride + mb_col * plane_w; |
| |
| const uint8_t *ref = ref_frame->buffers[plane] + frame_offset; |
| const int ss_x_shift = |
| mbd->plane[plane].subsampling_x - mbd->plane[0].subsampling_x; |
| const int ss_y_shift = |
| mbd->plane[plane].subsampling_y - mbd->plane[0].subsampling_y; |
| |
| apply_temporal_filter_planewise( |
| ref, frame_stride, pred + mb_pels * plane, plane_w, plane_w, plane_h, |
| noise_levels[plane], decay_control, accum + mb_pels * plane, |
| count + mb_pels * plane, luma_sq_error, chroma_sq_error, plane, |
| ss_x_shift, ss_y_shift); |
| } |
| if (chroma_sq_error != NULL) aom_free(chroma_sq_error); |
| } |