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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /media/libvpx/vp9/encoder/x86/vp9_denoiser_sse2.c
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/media/libvpx/vp9/encoder/x86/vp9_denoiser_sse2.c b/media/libvpx/vp9/encoder/x86/vp9_denoiser_sse2.c
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+/*
+ * Copyright (c) 2014 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 <emmintrin.h>
+
+#include "./vpx_config.h"
+#include "./vp9_rtcd.h"
+
+#include "vpx_ports/emmintrin_compat.h"
+#include "vpx/vpx_integer.h"
+#include "vp9/common/vp9_reconinter.h"
+#include "vp9/encoder/vp9_context_tree.h"
+#include "vp9/encoder/vp9_denoiser.h"
+#include "vpx_mem/vpx_mem.h"
+
+// Compute the sum of all pixel differences of this MB.
+static INLINE int sum_diff_16x1(__m128i acc_diff) {
+ const __m128i k_1 = _mm_set1_epi16(1);
+ const __m128i acc_diff_lo =
+ _mm_srai_epi16(_mm_unpacklo_epi8(acc_diff, acc_diff), 8);
+ const __m128i acc_diff_hi =
+ _mm_srai_epi16(_mm_unpackhi_epi8(acc_diff, acc_diff), 8);
+ const __m128i acc_diff_16 = _mm_add_epi16(acc_diff_lo, acc_diff_hi);
+ const __m128i hg_fe_dc_ba = _mm_madd_epi16(acc_diff_16, k_1);
+ const __m128i hgfe_dcba =
+ _mm_add_epi32(hg_fe_dc_ba, _mm_srli_si128(hg_fe_dc_ba, 8));
+ const __m128i hgfedcba =
+ _mm_add_epi32(hgfe_dcba, _mm_srli_si128(hgfe_dcba, 4));
+ return _mm_cvtsi128_si32(hgfedcba);
+}
+
+// Denoise a 16x1 vector.
+static INLINE __m128i vp9_denoiser_16x1_sse2(const uint8_t *sig,
+ const uint8_t *mc_running_avg_y,
+ uint8_t *running_avg_y,
+ const __m128i *k_0,
+ const __m128i *k_4,
+ const __m128i *k_8,
+ const __m128i *k_16,
+ const __m128i *l3,
+ const __m128i *l32,
+ const __m128i *l21,
+ __m128i acc_diff) {
+ // Calculate differences
+ const __m128i v_sig = _mm_loadu_si128((const __m128i *)(&sig[0]));
+ const __m128i v_mc_running_avg_y =
+ _mm_loadu_si128((const __m128i *)(&mc_running_avg_y[0]));
+ __m128i v_running_avg_y;
+ const __m128i pdiff = _mm_subs_epu8(v_mc_running_avg_y, v_sig);
+ const __m128i ndiff = _mm_subs_epu8(v_sig, v_mc_running_avg_y);
+ // Obtain the sign. FF if diff is negative.
+ const __m128i diff_sign = _mm_cmpeq_epi8(pdiff, *k_0);
+ // Clamp absolute difference to 16 to be used to get mask. Doing this
+ // allows us to use _mm_cmpgt_epi8, which operates on signed byte.
+ const __m128i clamped_absdiff =
+ _mm_min_epu8(_mm_or_si128(pdiff, ndiff), *k_16);
+ // Get masks for l2 l1 and l0 adjustments.
+ const __m128i mask2 = _mm_cmpgt_epi8(*k_16, clamped_absdiff);
+ const __m128i mask1 = _mm_cmpgt_epi8(*k_8, clamped_absdiff);
+ const __m128i mask0 = _mm_cmpgt_epi8(*k_4, clamped_absdiff);
+ // Get adjustments for l2, l1, and l0.
+ __m128i adj2 = _mm_and_si128(mask2, *l32);
+ const __m128i adj1 = _mm_and_si128(mask1, *l21);
+ const __m128i adj0 = _mm_and_si128(mask0, clamped_absdiff);
+ __m128i adj, padj, nadj;
+
+ // Combine the adjustments and get absolute adjustments.
+ adj2 = _mm_add_epi8(adj2, adj1);
+ adj = _mm_sub_epi8(*l3, adj2);
+ adj = _mm_andnot_si128(mask0, adj);
+ adj = _mm_or_si128(adj, adj0);
+
+ // Restore the sign and get positive and negative adjustments.
+ padj = _mm_andnot_si128(diff_sign, adj);
+ nadj = _mm_and_si128(diff_sign, adj);
+
+ // Calculate filtered value.
+ v_running_avg_y = _mm_adds_epu8(v_sig, padj);
+ v_running_avg_y = _mm_subs_epu8(v_running_avg_y, nadj);
+ _mm_storeu_si128((__m128i *)running_avg_y, v_running_avg_y);
+
+ // Adjustments <=7, and each element in acc_diff can fit in signed
+ // char.
+ acc_diff = _mm_adds_epi8(acc_diff, padj);
+ acc_diff = _mm_subs_epi8(acc_diff, nadj);
+ return acc_diff;
+}
+
+// Denoise a 16x1 vector with a weaker filter.
+static INLINE __m128i vp9_denoiser_adj_16x1_sse2(
+ const uint8_t *sig, const uint8_t *mc_running_avg_y,
+ uint8_t *running_avg_y, const __m128i k_0,
+ const __m128i k_delta, __m128i acc_diff) {
+ __m128i v_running_avg_y = _mm_loadu_si128((__m128i *)(&running_avg_y[0]));
+ // Calculate differences.
+ const __m128i v_sig = _mm_loadu_si128((const __m128i *)(&sig[0]));
+ const __m128i v_mc_running_avg_y =
+ _mm_loadu_si128((const __m128i *)(&mc_running_avg_y[0]));
+ const __m128i pdiff = _mm_subs_epu8(v_mc_running_avg_y, v_sig);
+ const __m128i ndiff = _mm_subs_epu8(v_sig, v_mc_running_avg_y);
+ // Obtain the sign. FF if diff is negative.
+ const __m128i diff_sign = _mm_cmpeq_epi8(pdiff, k_0);
+ // Clamp absolute difference to delta to get the adjustment.
+ const __m128i adj =
+ _mm_min_epu8(_mm_or_si128(pdiff, ndiff), k_delta);
+ // Restore the sign and get positive and negative adjustments.
+ __m128i padj, nadj;
+ padj = _mm_andnot_si128(diff_sign, adj);
+ nadj = _mm_and_si128(diff_sign, adj);
+ // Calculate filtered value.
+ v_running_avg_y = _mm_subs_epu8(v_running_avg_y, padj);
+ v_running_avg_y = _mm_adds_epu8(v_running_avg_y, nadj);
+ _mm_storeu_si128((__m128i *)running_avg_y, v_running_avg_y);
+
+ // Accumulate the adjustments.
+ acc_diff = _mm_subs_epi8(acc_diff, padj);
+ acc_diff = _mm_adds_epi8(acc_diff, nadj);
+ return acc_diff;
+}
+
+// Denoiser for 4xM and 8xM blocks.
+static int vp9_denoiser_NxM_sse2_small(
+ const uint8_t *sig, int sig_stride, const uint8_t *mc_running_avg_y,
+ int mc_avg_y_stride, uint8_t *running_avg_y, int avg_y_stride,
+ int increase_denoising, BLOCK_SIZE bs, int motion_magnitude, int width) {
+ int sum_diff_thresh, r, sum_diff = 0;
+ const int shift_inc = (increase_denoising &&
+ motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ?
+ 1 : 0;
+ uint8_t sig_buffer[8][16], mc_running_buffer[8][16], running_buffer[8][16];
+ __m128i acc_diff = _mm_setzero_si128();
+ const __m128i k_0 = _mm_setzero_si128();
+ const __m128i k_4 = _mm_set1_epi8(4 + shift_inc);
+ const __m128i k_8 = _mm_set1_epi8(8);
+ const __m128i k_16 = _mm_set1_epi8(16);
+ // Modify each level's adjustment according to motion_magnitude.
+ const __m128i l3 = _mm_set1_epi8(
+ (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 7 + shift_inc : 6);
+ // Difference between level 3 and level 2 is 2.
+ const __m128i l32 = _mm_set1_epi8(2);
+ // Difference between level 2 and level 1 is 1.
+ const __m128i l21 = _mm_set1_epi8(1);
+ const uint8_t shift = (width == 4) ? 2 : 1;
+
+ for (r = 0; r < ((4 << b_height_log2_lookup[bs]) >> shift); ++r) {
+ memcpy(sig_buffer[r], sig, width);
+ memcpy(sig_buffer[r] + width, sig + sig_stride, width);
+ memcpy(mc_running_buffer[r], mc_running_avg_y, width);
+ memcpy(mc_running_buffer[r] + width,
+ mc_running_avg_y + mc_avg_y_stride, width);
+ memcpy(running_buffer[r], running_avg_y, width);
+ memcpy(running_buffer[r] + width, running_avg_y + avg_y_stride, width);
+ if (width == 4) {
+ memcpy(sig_buffer[r] + width * 2, sig + sig_stride * 2, width);
+ memcpy(sig_buffer[r] + width * 3, sig + sig_stride * 3, width);
+ memcpy(mc_running_buffer[r] + width * 2,
+ mc_running_avg_y + mc_avg_y_stride * 2, width);
+ memcpy(mc_running_buffer[r] + width * 3,
+ mc_running_avg_y + mc_avg_y_stride * 3, width);
+ memcpy(running_buffer[r] + width * 2,
+ running_avg_y + avg_y_stride * 2, width);
+ memcpy(running_buffer[r] + width * 3,
+ running_avg_y + avg_y_stride * 3, width);
+ }
+ acc_diff = vp9_denoiser_16x1_sse2(sig_buffer[r],
+ mc_running_buffer[r],
+ running_buffer[r],
+ &k_0, &k_4, &k_8, &k_16,
+ &l3, &l32, &l21, acc_diff);
+ memcpy(running_avg_y, running_buffer[r], width);
+ memcpy(running_avg_y + avg_y_stride, running_buffer[r] + width, width);
+ if (width == 4) {
+ memcpy(running_avg_y + avg_y_stride * 2,
+ running_buffer[r] + width * 2, width);
+ memcpy(running_avg_y + avg_y_stride * 3,
+ running_buffer[r] + width * 3, width);
+ }
+ // Update pointers for next iteration.
+ sig += (sig_stride << shift);
+ mc_running_avg_y += (mc_avg_y_stride << shift);
+ running_avg_y += (avg_y_stride << shift);
+ }
+
+ {
+ sum_diff = sum_diff_16x1(acc_diff);
+ sum_diff_thresh = total_adj_strong_thresh(bs, increase_denoising);
+ if (abs(sum_diff) > sum_diff_thresh) {
+ // Before returning to copy the block (i.e., apply no denoising),
+ // check if we can still apply some (weaker) temporal filtering to
+ // this block, that would otherwise not be denoised at all. Simplest
+ // is to apply an additional adjustment to running_avg_y to bring it
+ // closer to sig. The adjustment is capped by a maximum delta, and
+ // chosen such that in most cases the resulting sum_diff will be
+ // within the acceptable range given by sum_diff_thresh.
+
+ // The delta is set by the excess of absolute pixel diff over the
+ // threshold.
+ const int delta = ((abs(sum_diff) - sum_diff_thresh) >>
+ num_pels_log2_lookup[bs]) + 1;
+ // Only apply the adjustment for max delta up to 3.
+ if (delta < 4) {
+ const __m128i k_delta = _mm_set1_epi8(delta);
+ running_avg_y -= avg_y_stride * (4 << b_height_log2_lookup[bs]);
+ for (r = 0; r < ((4 << b_height_log2_lookup[bs]) >> shift); ++r) {
+ acc_diff = vp9_denoiser_adj_16x1_sse2(
+ sig_buffer[r], mc_running_buffer[r], running_buffer[r],
+ k_0, k_delta, acc_diff);
+ memcpy(running_avg_y, running_buffer[r], width);
+ memcpy(running_avg_y + avg_y_stride,
+ running_buffer[r] + width, width);
+ if (width == 4) {
+ memcpy(running_avg_y + avg_y_stride * 2,
+ running_buffer[r] + width * 2, width);
+ memcpy(running_avg_y + avg_y_stride * 3,
+ running_buffer[r] + width * 3, width);
+ }
+ // Update pointers for next iteration.
+ running_avg_y += (avg_y_stride << shift);
+ }
+ sum_diff = sum_diff_16x1(acc_diff);
+ if (abs(sum_diff) > sum_diff_thresh) {
+ return COPY_BLOCK;
+ }
+ } else {
+ return COPY_BLOCK;
+ }
+ }
+ }
+ return FILTER_BLOCK;
+}
+
+// Denoiser for 16xM, 32xM and 64xM blocks
+static int vp9_denoiser_NxM_sse2_big(const uint8_t *sig, int sig_stride,
+ const uint8_t *mc_running_avg_y,
+ int mc_avg_y_stride,
+ uint8_t *running_avg_y,
+ int avg_y_stride,
+ int increase_denoising, BLOCK_SIZE bs,
+ int motion_magnitude) {
+ int sum_diff_thresh, r, c, sum_diff = 0;
+ const int shift_inc = (increase_denoising &&
+ motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ?
+ 1 : 0;
+ __m128i acc_diff[4][4];
+ const __m128i k_0 = _mm_setzero_si128();
+ const __m128i k_4 = _mm_set1_epi8(4 + shift_inc);
+ const __m128i k_8 = _mm_set1_epi8(8);
+ const __m128i k_16 = _mm_set1_epi8(16);
+ // Modify each level's adjustment according to motion_magnitude.
+ const __m128i l3 = _mm_set1_epi8(
+ (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 7 + shift_inc : 6);
+ // Difference between level 3 and level 2 is 2.
+ const __m128i l32 = _mm_set1_epi8(2);
+ // Difference between level 2 and level 1 is 1.
+ const __m128i l21 = _mm_set1_epi8(1);
+
+ for (c = 0; c < 4; ++c) {
+ for (r = 0; r < 4; ++r) {
+ acc_diff[c][r] = _mm_setzero_si128();
+ }
+ }
+
+ for (r = 0; r < (4 << b_height_log2_lookup[bs]); ++r) {
+ for (c = 0; c < (4 << b_width_log2_lookup[bs]); c += 16) {
+ acc_diff[c>>4][r>>4] = vp9_denoiser_16x1_sse2(
+ sig, mc_running_avg_y, running_avg_y, &k_0, &k_4,
+ &k_8, &k_16, &l3, &l32, &l21, acc_diff[c>>4][r>>4]);
+ // Update pointers for next iteration.
+ sig += 16;
+ mc_running_avg_y += 16;
+ running_avg_y += 16;
+ }
+
+ if ((r + 1) % 16 == 0 || (bs == BLOCK_16X8 && r == 7)) {
+ for (c = 0; c < (4 << b_width_log2_lookup[bs]); c += 16) {
+ sum_diff += sum_diff_16x1(acc_diff[c>>4][r>>4]);
+ }
+ }
+
+ // Update pointers for next iteration.
+ sig = sig - 16 * ((4 << b_width_log2_lookup[bs]) >> 4) + sig_stride;
+ mc_running_avg_y = mc_running_avg_y -
+ 16 * ((4 << b_width_log2_lookup[bs]) >> 4) +
+ mc_avg_y_stride;
+ running_avg_y = running_avg_y -
+ 16 * ((4 << b_width_log2_lookup[bs]) >> 4) +
+ avg_y_stride;
+ }
+
+ {
+ sum_diff_thresh = total_adj_strong_thresh(bs, increase_denoising);
+ if (abs(sum_diff) > sum_diff_thresh) {
+ const int delta = ((abs(sum_diff) - sum_diff_thresh) >>
+ num_pels_log2_lookup[bs]) + 1;
+
+ // Only apply the adjustment for max delta up to 3.
+ if (delta < 4) {
+ const __m128i k_delta = _mm_set1_epi8(delta);
+ sig -= sig_stride * (4 << b_height_log2_lookup[bs]);
+ mc_running_avg_y -= mc_avg_y_stride * (4 << b_height_log2_lookup[bs]);
+ running_avg_y -= avg_y_stride * (4 << b_height_log2_lookup[bs]);
+ sum_diff = 0;
+ for (r = 0; r < (4 << b_height_log2_lookup[bs]); ++r) {
+ for (c = 0; c < (4 << b_width_log2_lookup[bs]); c += 16) {
+ acc_diff[c>>4][r>>4] = vp9_denoiser_adj_16x1_sse2(
+ sig, mc_running_avg_y, running_avg_y, k_0,
+ k_delta, acc_diff[c>>4][r>>4]);
+ // Update pointers for next iteration.
+ sig += 16;
+ mc_running_avg_y += 16;
+ running_avg_y += 16;
+ }
+
+ if ((r + 1) % 16 == 0 || (bs == BLOCK_16X8 && r == 7)) {
+ for (c = 0; c < (4 << b_width_log2_lookup[bs]); c += 16) {
+ sum_diff += sum_diff_16x1(acc_diff[c>>4][r>>4]);
+ }
+ }
+ sig = sig - 16 * ((4 << b_width_log2_lookup[bs]) >> 4) + sig_stride;
+ mc_running_avg_y = mc_running_avg_y -
+ 16 * ((4 << b_width_log2_lookup[bs]) >> 4) +
+ mc_avg_y_stride;
+ running_avg_y = running_avg_y -
+ 16 * ((4 << b_width_log2_lookup[bs]) >> 4) +
+ avg_y_stride;
+ }
+ if (abs(sum_diff) > sum_diff_thresh) {
+ return COPY_BLOCK;
+ }
+ } else {
+ return COPY_BLOCK;
+ }
+ }
+ }
+ return FILTER_BLOCK;
+}
+
+int vp9_denoiser_filter_sse2(const uint8_t *sig, int sig_stride,
+ const uint8_t *mc_avg,
+ int mc_avg_stride,
+ uint8_t *avg, int avg_stride,
+ int increase_denoising,
+ BLOCK_SIZE bs,
+ int motion_magnitude) {
+ if (bs == BLOCK_4X4 || bs == BLOCK_4X8) {
+ return vp9_denoiser_NxM_sse2_small(sig, sig_stride,
+ mc_avg, mc_avg_stride,
+ avg, avg_stride,
+ increase_denoising,
+ bs, motion_magnitude, 4);
+ } else if (bs == BLOCK_8X4 || bs == BLOCK_8X8 || bs == BLOCK_8X16) {
+ return vp9_denoiser_NxM_sse2_small(sig, sig_stride,
+ mc_avg, mc_avg_stride,
+ avg, avg_stride,
+ increase_denoising,
+ bs, motion_magnitude, 8);
+ } else if (bs == BLOCK_16X8 || bs == BLOCK_16X16 || bs == BLOCK_16X32 ||
+ bs == BLOCK_32X16|| bs == BLOCK_32X32 || bs == BLOCK_32X64 ||
+ bs == BLOCK_64X32 || bs == BLOCK_64X64) {
+ return vp9_denoiser_NxM_sse2_big(sig, sig_stride,
+ mc_avg, mc_avg_stride,
+ avg, avg_stride,
+ increase_denoising,
+ bs, motion_magnitude);
+ } else {
+ return COPY_BLOCK;
+ }
+}