diff options
Diffstat (limited to 'third_party/aom/av1/common/x86/warp_plane_sse2.c')
| -rw-r--r-- | third_party/aom/av1/common/x86/warp_plane_sse2.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/x86/warp_plane_sse2.c b/third_party/aom/av1/common/x86/warp_plane_sse2.c new file mode 100644 index 000000000..925e4650d --- /dev/null +++ b/third_party/aom/av1/common/x86/warp_plane_sse2.c @@ -0,0 +1,297 @@ +/* + * 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 <emmintrin.h> + +#include "./av1_rtcd.h" +#include "av1/common/warped_motion.h" + +static const __m128i *const filter = (const __m128i *const)warped_filter; + +/* SSE2 version of the rotzoom/affine warp filter */ +void av1_warp_affine_sse2(int32_t *mat, uint8_t *ref, int width, int height, + int stride, uint8_t *pred, int p_col, int p_row, + int p_width, int p_height, int p_stride, + int subsampling_x, int subsampling_y, int ref_frm, + int16_t alpha, int16_t beta, int16_t gamma, + int16_t delta) { + __m128i tmp[15]; + int i, j, k; + + /* Note: For this code to work, the left/right frame borders need to be + extended by at least 13 pixels each. By the time we get here, other + code will have set up this border, but we allow an explicit check + for debugging purposes. + */ + /*for (i = 0; i < height; ++i) { + for (j = 0; j < 13; ++j) { + assert(ref[i * stride - 13 + j] == ref[i * stride]); + assert(ref[i * stride + width + j] == ref[i * stride + (width - 1)]); + } + }*/ + + for (i = 0; i < p_height; i += 8) { + for (j = 0; j < p_width; j += 8) { + // (x, y) coordinates of the center of this block in the destination + // image + int32_t dst_x = p_col + j + 4; + int32_t dst_y = p_row + i + 4; + + int32_t x4, y4, ix4, sx4, iy4, sy4; + if (subsampling_x) + x4 = ROUND_POWER_OF_TWO_SIGNED( + mat[2] * 2 * dst_x + mat[3] * 2 * dst_y + mat[0] + + (mat[2] + mat[3] - (1 << WARPEDMODEL_PREC_BITS)) / 2, + 1); + else + x4 = mat[2] * dst_x + mat[3] * dst_y + mat[0]; + + if (subsampling_y) + y4 = ROUND_POWER_OF_TWO_SIGNED( + mat[4] * 2 * dst_x + mat[5] * 2 * dst_y + mat[1] + + (mat[4] + mat[5] - (1 << WARPEDMODEL_PREC_BITS)) / 2, + 1); + else + y4 = mat[4] * dst_x + mat[5] * dst_y + mat[1]; + + ix4 = x4 >> WARPEDMODEL_PREC_BITS; + sx4 = x4 & ((1 << WARPEDMODEL_PREC_BITS) - 1); + iy4 = y4 >> WARPEDMODEL_PREC_BITS; + sy4 = y4 & ((1 << WARPEDMODEL_PREC_BITS) - 1); + + // Horizontal filter + for (k = -7; k < AOMMIN(8, p_height - i); ++k) { + int iy = iy4 + k; + if (iy < 0) + iy = 0; + else if (iy > height - 1) + iy = height - 1; + + // If the block is aligned such that, after clamping, every sample + // would be taken from the leftmost/rightmost column, then we can + // skip the expensive horizontal filter. + if (ix4 <= -7) { + tmp[k + 7] = _mm_set1_epi16( + ref[iy * stride] * + (1 << (WARPEDPIXEL_FILTER_BITS - HORSHEAR_REDUCE_PREC_BITS))); + } else if (ix4 >= width + 6) { + tmp[k + 7] = _mm_set1_epi16( + ref[iy * stride + (width - 1)] * + (1 << (WARPEDPIXEL_FILTER_BITS - HORSHEAR_REDUCE_PREC_BITS))); + } else { + int sx = sx4 + alpha * (-4) + beta * k + + // Include rounding and offset here + (1 << (WARPEDDIFF_PREC_BITS - 1)) + + (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS); + + // Load source pixels + __m128i zero = _mm_setzero_si128(); + __m128i src = + _mm_loadu_si128((__m128i *)(ref + iy * stride + ix4 - 7)); + + // Filter even-index pixels + __m128i tmp_0 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 0 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_2 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 2 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_4 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 4 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_6 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 6 * alpha) >> WARPEDDIFF_PREC_BITS))); + + // coeffs 0 1 0 1 2 3 2 3 for pixels 0, 2 + __m128i tmp_8 = _mm_unpacklo_epi32(tmp_0, tmp_2); + // coeffs 0 1 0 1 2 3 2 3 for pixels 4, 6 + __m128i tmp_10 = _mm_unpacklo_epi32(tmp_4, tmp_6); + // coeffs 4 5 4 5 6 7 6 7 for pixels 0, 2 + __m128i tmp_12 = _mm_unpackhi_epi32(tmp_0, tmp_2); + // coeffs 4 5 4 5 6 7 6 7 for pixels 4, 6 + __m128i tmp_14 = _mm_unpackhi_epi32(tmp_4, tmp_6); + + // coeffs 0 1 0 1 0 1 0 1 for pixels 0, 2, 4, 6 + __m128i coeff_0 = _mm_unpacklo_epi64(tmp_8, tmp_10); + // coeffs 2 3 2 3 2 3 2 3 for pixels 0, 2, 4, 6 + __m128i coeff_2 = _mm_unpackhi_epi64(tmp_8, tmp_10); + // coeffs 4 5 4 5 4 5 4 5 for pixels 0, 2, 4, 6 + __m128i coeff_4 = _mm_unpacklo_epi64(tmp_12, tmp_14); + // coeffs 6 7 6 7 6 7 6 7 for pixels 0, 2, 4, 6 + __m128i coeff_6 = _mm_unpackhi_epi64(tmp_12, tmp_14); + + __m128i round_const = + _mm_set1_epi32((1 << HORSHEAR_REDUCE_PREC_BITS) >> 1); + + // Calculate filtered results + __m128i src_0 = _mm_unpacklo_epi8(src, zero); + __m128i res_0 = _mm_madd_epi16(src_0, coeff_0); + __m128i src_2 = _mm_unpacklo_epi8(_mm_srli_si128(src, 2), zero); + __m128i res_2 = _mm_madd_epi16(src_2, coeff_2); + __m128i src_4 = _mm_unpacklo_epi8(_mm_srli_si128(src, 4), zero); + __m128i res_4 = _mm_madd_epi16(src_4, coeff_4); + __m128i src_6 = _mm_unpacklo_epi8(_mm_srli_si128(src, 6), zero); + __m128i res_6 = _mm_madd_epi16(src_6, coeff_6); + + __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4), + _mm_add_epi32(res_2, res_6)); + res_even = _mm_srai_epi32(_mm_add_epi32(res_even, round_const), + HORSHEAR_REDUCE_PREC_BITS); + + // Filter odd-index pixels + __m128i tmp_1 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 1 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_3 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 3 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_5 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 5 * alpha) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_7 = _mm_loadu_si128( + (__m128i *)(filter + ((sx + 7 * alpha) >> WARPEDDIFF_PREC_BITS))); + + __m128i tmp_9 = _mm_unpacklo_epi32(tmp_1, tmp_3); + __m128i tmp_11 = _mm_unpacklo_epi32(tmp_5, tmp_7); + __m128i tmp_13 = _mm_unpackhi_epi32(tmp_1, tmp_3); + __m128i tmp_15 = _mm_unpackhi_epi32(tmp_5, tmp_7); + + __m128i coeff_1 = _mm_unpacklo_epi64(tmp_9, tmp_11); + __m128i coeff_3 = _mm_unpackhi_epi64(tmp_9, tmp_11); + __m128i coeff_5 = _mm_unpacklo_epi64(tmp_13, tmp_15); + __m128i coeff_7 = _mm_unpackhi_epi64(tmp_13, tmp_15); + + __m128i src_1 = _mm_unpacklo_epi8(_mm_srli_si128(src, 1), zero); + __m128i res_1 = _mm_madd_epi16(src_1, coeff_1); + __m128i src_3 = _mm_unpacklo_epi8(_mm_srli_si128(src, 3), zero); + __m128i res_3 = _mm_madd_epi16(src_3, coeff_3); + __m128i src_5 = _mm_unpacklo_epi8(_mm_srli_si128(src, 5), zero); + __m128i res_5 = _mm_madd_epi16(src_5, coeff_5); + __m128i src_7 = _mm_unpacklo_epi8(_mm_srli_si128(src, 7), zero); + __m128i res_7 = _mm_madd_epi16(src_7, coeff_7); + + __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5), + _mm_add_epi32(res_3, res_7)); + res_odd = _mm_srai_epi32(_mm_add_epi32(res_odd, round_const), + HORSHEAR_REDUCE_PREC_BITS); + + // Combine results into one register. + // We store the columns in the order 0, 2, 4, 6, 1, 3, 5, 7 + // as this order helps with the vertical filter. + tmp[k + 7] = _mm_packs_epi32(res_even, res_odd); + } + } + + // Vertical filter + for (k = -4; k < AOMMIN(4, p_height - i - 4); ++k) { + int sy = sy4 + gamma * (-4) + delta * k + + (1 << (WARPEDDIFF_PREC_BITS - 1)) + + (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS); + + // Load from tmp and rearrange pairs of consecutive rows into the + // column order 0 0 2 2 4 4 6 6; 1 1 3 3 5 5 7 7 + __m128i *src = tmp + (k + 4); + __m128i src_0 = _mm_unpacklo_epi16(src[0], src[1]); + __m128i src_2 = _mm_unpacklo_epi16(src[2], src[3]); + __m128i src_4 = _mm_unpacklo_epi16(src[4], src[5]); + __m128i src_6 = _mm_unpacklo_epi16(src[6], src[7]); + + // Filter even-index pixels + __m128i tmp_0 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 0 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_2 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 2 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_4 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 4 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_6 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 6 * gamma) >> WARPEDDIFF_PREC_BITS))); + + __m128i tmp_8 = _mm_unpacklo_epi32(tmp_0, tmp_2); + __m128i tmp_10 = _mm_unpacklo_epi32(tmp_4, tmp_6); + __m128i tmp_12 = _mm_unpackhi_epi32(tmp_0, tmp_2); + __m128i tmp_14 = _mm_unpackhi_epi32(tmp_4, tmp_6); + + __m128i coeff_0 = _mm_unpacklo_epi64(tmp_8, tmp_10); + __m128i coeff_2 = _mm_unpackhi_epi64(tmp_8, tmp_10); + __m128i coeff_4 = _mm_unpacklo_epi64(tmp_12, tmp_14); + __m128i coeff_6 = _mm_unpackhi_epi64(tmp_12, tmp_14); + + __m128i res_0 = _mm_madd_epi16(src_0, coeff_0); + __m128i res_2 = _mm_madd_epi16(src_2, coeff_2); + __m128i res_4 = _mm_madd_epi16(src_4, coeff_4); + __m128i res_6 = _mm_madd_epi16(src_6, coeff_6); + + __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2), + _mm_add_epi32(res_4, res_6)); + + // Filter odd-index pixels + __m128i src_1 = _mm_unpackhi_epi16(src[0], src[1]); + __m128i src_3 = _mm_unpackhi_epi16(src[2], src[3]); + __m128i src_5 = _mm_unpackhi_epi16(src[4], src[5]); + __m128i src_7 = _mm_unpackhi_epi16(src[6], src[7]); + + __m128i tmp_1 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 1 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_3 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 3 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_5 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 5 * gamma) >> WARPEDDIFF_PREC_BITS))); + __m128i tmp_7 = _mm_loadu_si128( + (__m128i *)(filter + ((sy + 7 * gamma) >> WARPEDDIFF_PREC_BITS))); + + __m128i tmp_9 = _mm_unpacklo_epi32(tmp_1, tmp_3); + __m128i tmp_11 = _mm_unpacklo_epi32(tmp_5, tmp_7); + __m128i tmp_13 = _mm_unpackhi_epi32(tmp_1, tmp_3); + __m128i tmp_15 = _mm_unpackhi_epi32(tmp_5, tmp_7); + + __m128i coeff_1 = _mm_unpacklo_epi64(tmp_9, tmp_11); + __m128i coeff_3 = _mm_unpackhi_epi64(tmp_9, tmp_11); + __m128i coeff_5 = _mm_unpacklo_epi64(tmp_13, tmp_15); + __m128i coeff_7 = _mm_unpackhi_epi64(tmp_13, tmp_15); + + __m128i res_1 = _mm_madd_epi16(src_1, coeff_1); + __m128i res_3 = _mm_madd_epi16(src_3, coeff_3); + __m128i res_5 = _mm_madd_epi16(src_5, coeff_5); + __m128i res_7 = _mm_madd_epi16(src_7, coeff_7); + + __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3), + _mm_add_epi32(res_5, res_7)); + + // Rearrange pixels back into the order 0 ... 7 + __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd); + __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd); + + // Round and pack into 8 bits + __m128i round_const = + _mm_set1_epi32((1 << VERSHEAR_REDUCE_PREC_BITS) >> 1); + + __m128i res_lo_round = _mm_srai_epi32( + _mm_add_epi32(res_lo, round_const), VERSHEAR_REDUCE_PREC_BITS); + __m128i res_hi_round = _mm_srai_epi32( + _mm_add_epi32(res_hi, round_const), VERSHEAR_REDUCE_PREC_BITS); + + __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round); + __m128i res_8bit = _mm_packus_epi16(res_16bit, res_16bit); + + // Store, blending with 'pred' if needed + __m128i *p = (__m128i *)&pred[(i + k + 4) * p_stride + j]; + + // Note: If we're outputting a 4x4 block, we need to be very careful + // to only output 4 pixels at this point, to avoid encode/decode + // mismatches when encoding with multiple threads. + if (p_width == 4) { + if (ref_frm) { + const __m128i orig = _mm_cvtsi32_si128(*(uint32_t *)p); + res_8bit = _mm_avg_epu8(res_8bit, orig); + } + *(uint32_t *)p = _mm_cvtsi128_si32(res_8bit); + } else { + if (ref_frm) res_8bit = _mm_avg_epu8(res_8bit, _mm_loadl_epi64(p)); + _mm_storel_epi64(p, res_8bit); + } + } + } + } +} |