#include <emmintrin.h>
#include "vpx_ports/emmintrin_compat.h"
-union sum_union {
- __m128i v;
- signed char e[16];
-};
-
-int vp8_denoiser_filter_sse2(YV12_BUFFER_CONFIG *mc_running_avg,
- YV12_BUFFER_CONFIG *running_avg,
- MACROBLOCK *signal, unsigned int motion_magnitude,
- int y_offset, int uv_offset)
+/* Compute the sum of all pixel differences of this MB. */
+static INLINE unsigned int abs_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));
+ unsigned int sum_diff = abs(_mm_cvtsi128_si32(hgfedcba));
+
+ return sum_diff;
+}
+
+int vp8_denoiser_filter_sse2(unsigned char *mc_running_avg_y,
+ int mc_avg_y_stride,
+ unsigned char *running_avg_y, int avg_y_stride,
+ unsigned char *sig, int sig_stride,
+ unsigned int motion_magnitude,
+ int increase_denoising)
{
- unsigned char *sig = signal->thismb;
- int sig_stride = 16;
- unsigned char *mc_running_avg_y = mc_running_avg->y_buffer + y_offset;
- int mc_avg_y_stride = mc_running_avg->y_stride;
- unsigned char *running_avg_y = running_avg->y_buffer + y_offset;
- int avg_y_stride = running_avg->y_stride;
+ unsigned char *running_avg_y_start = running_avg_y;
+ unsigned char *sig_start = sig;
+ unsigned int sum_diff_thresh;
int r;
+ int shift_inc = (increase_denoising &&
+ motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 1 : 0;
__m128i acc_diff = _mm_setzero_si128();
const __m128i k_0 = _mm_setzero_si128();
- const __m128i k_4 = _mm_set1_epi8(4);
+ 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 : 6);
+ (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. */
{
/* Compute the sum of all pixel differences of this MB. */
- union sum_union s;
- int sum_diff = 0;
- s.v = acc_diff;
- sum_diff = s.e[0] + s.e[1] + s.e[2] + s.e[3] + s.e[4] + s.e[5]
- + s.e[6] + s.e[7] + s.e[8] + s.e[9] + s.e[10] + s.e[11]
- + s.e[12] + s.e[13] + s.e[14] + s.e[15];
-
- if (abs(sum_diff) > SUM_DIFF_THRESHOLD)
- {
+ unsigned int abs_sum_diff = abs_sum_diff_16x1(acc_diff);
+ sum_diff_thresh = SUM_DIFF_THRESHOLD;
+ if (increase_denoising) sum_diff_thresh = SUM_DIFF_THRESHOLD_HIGH;
+ 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 accceptable range given by sum_diff_thresh.
+
+ // The delta is set by the excess of absolute pixel diff over the
+ // threshold.
+ int delta = ((abs_sum_diff - sum_diff_thresh) >> 8) + 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 * 16;
+ mc_running_avg_y -= mc_avg_y_stride * 16;
+ running_avg_y -= avg_y_stride * 16;
+ for (r = 0; r < 16; ++r) {
+ __m128i v_running_avg_y =
+ _mm_loadu_si128((__m128i *)(&running_avg_y[0]));
+ // Calculate differences.
+ const __m128i v_sig = _mm_loadu_si128((__m128i *)(&sig[0]));
+ const __m128i v_mc_running_avg_y =
+ _mm_loadu_si128((__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);
+
+ // Update pointers for next iteration.
+ sig += sig_stride;
+ mc_running_avg_y += mc_avg_y_stride;
+ running_avg_y += avg_y_stride;
+ }
+ abs_sum_diff = abs_sum_diff_16x1(acc_diff);
+ if (abs_sum_diff > sum_diff_thresh) {
+ return COPY_BLOCK;
+ }
+ } else {
+ return COPY_BLOCK;
+ }
+ }
+ }
+
+ vp8_copy_mem16x16(running_avg_y_start, avg_y_stride, sig_start, sig_stride);
+ return FILTER_BLOCK;
+}
+
+int vp8_denoiser_filter_uv_sse2(unsigned char *mc_running_avg,
+ int mc_avg_stride,
+ unsigned char *running_avg, int avg_stride,
+ unsigned char *sig, int sig_stride,
+ unsigned int motion_magnitude,
+ int increase_denoising) {
+ unsigned char *running_avg_start = running_avg;
+ unsigned char *sig_start = sig;
+ unsigned int sum_diff_thresh;
+ int r;
+ int shift_inc = (increase_denoising &&
+ motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD_UV) ? 1 : 0;
+ __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_UV) ?
+ 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 __m128i k_1 = _mm_set1_epi16(1);
+ __m128i vec_sum_block = _mm_setzero_si128();
+
+ // Avoid denoising color signal if its close to average level.
+ for (r = 0; r < 8; ++r) {
+ const __m128i v_sig = _mm_loadl_epi64((__m128i *)(&sig[0]));
+ const __m128i v_sig_unpack = _mm_unpacklo_epi8(v_sig, k_0);
+ vec_sum_block = _mm_add_epi16(vec_sum_block, v_sig_unpack);
+ sig += sig_stride;
+ }
+ sig -= sig_stride * 8;
+ {
+ const __m128i hg_fe_dc_ba = _mm_madd_epi16(vec_sum_block, 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));
+ const int sum_block = _mm_cvtsi128_si32(hgfedcba);
+ if (abs(sum_block - (128 * 8 * 8)) < SUM_DIFF_FROM_AVG_THRESH_UV) {
+ return COPY_BLOCK;
+ }
+ }
+ }
+
+ for (r = 0; r < 4; ++r) {
+ /* Calculate differences */
+ const __m128i v_sig_low = _mm_castpd_si128(
+ _mm_load_sd((double *)(&sig[0])));
+ const __m128i v_sig = _mm_castpd_si128(
+ _mm_loadh_pd(_mm_castsi128_pd(v_sig_low),
+ (double *)(&sig[sig_stride])));
+ const __m128i v_mc_running_avg_low = _mm_castpd_si128(
+ _mm_load_sd((double *)(&mc_running_avg[0])));
+ const __m128i v_mc_running_avg = _mm_castpd_si128(
+ _mm_loadh_pd(_mm_castsi128_pd(v_mc_running_avg_low),
+ (double *)(&mc_running_avg[mc_avg_stride])));
+ const __m128i pdiff = _mm_subs_epu8(v_mc_running_avg, v_sig);
+ const __m128i ndiff = _mm_subs_epu8(v_sig, v_mc_running_avg);
+ /* 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;
+ __m128i v_running_avg;
+
+ /* 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 = _mm_adds_epu8(v_sig, padj);
+ v_running_avg = _mm_subs_epu8(v_running_avg, nadj);
+
+ _mm_storel_pd((double *)&running_avg[0],
+ _mm_castsi128_pd(v_running_avg));
+ _mm_storeh_pd((double *)&running_avg[avg_stride],
+ _mm_castsi128_pd(v_running_avg));
+
+ /* 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);
+
+ /* Update pointers for next iteration. */
+ sig += sig_stride * 2;
+ mc_running_avg += mc_avg_stride * 2;
+ running_avg += avg_stride * 2;
+ }
+
+ {
+ unsigned int abs_sum_diff = abs_sum_diff_16x1(acc_diff);
+ sum_diff_thresh = SUM_DIFF_THRESHOLD_UV;
+ if (increase_denoising) sum_diff_thresh = SUM_DIFF_THRESHOLD_HIGH_UV;
+ 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 accceptable range given by sum_diff_thresh.
+
+ // The delta is set by the excess of absolute pixel diff over the
+ // threshold.
+ int delta = ((abs_sum_diff - sum_diff_thresh) >> 8) + 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 * 8;
+ mc_running_avg -= mc_avg_stride * 8;
+ running_avg -= avg_stride * 8;
+ for (r = 0; r < 4; ++r) {
+ // Calculate differences.
+ const __m128i v_sig_low = _mm_castpd_si128(
+ _mm_load_sd((double *)(&sig[0])));
+ const __m128i v_sig = _mm_castpd_si128(
+ _mm_loadh_pd(_mm_castsi128_pd(v_sig_low),
+ (double *)(&sig[sig_stride])));
+ const __m128i v_mc_running_avg_low = _mm_castpd_si128(
+ _mm_load_sd((double *)(&mc_running_avg[0])));
+ const __m128i v_mc_running_avg = _mm_castpd_si128(
+ _mm_loadh_pd(_mm_castsi128_pd(v_mc_running_avg_low),
+ (double *)(&mc_running_avg[mc_avg_stride])));
+ const __m128i pdiff = _mm_subs_epu8(v_mc_running_avg, v_sig);
+ const __m128i ndiff = _mm_subs_epu8(v_sig, v_mc_running_avg);
+ // 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;
+ const __m128i v_running_avg_low = _mm_castpd_si128(
+ _mm_load_sd((double *)(&running_avg[0])));
+ __m128i v_running_avg = _mm_castpd_si128(
+ _mm_loadh_pd(_mm_castsi128_pd(v_running_avg_low),
+ (double *)(&running_avg[avg_stride])));
+ padj = _mm_andnot_si128(diff_sign, adj);
+ nadj = _mm_and_si128(diff_sign, adj);
+ // Calculate filtered value.
+ v_running_avg = _mm_subs_epu8(v_running_avg, padj);
+ v_running_avg = _mm_adds_epu8(v_running_avg, nadj);
+
+ _mm_storel_pd((double *)&running_avg[0],
+ _mm_castsi128_pd(v_running_avg));
+ _mm_storeh_pd((double *)&running_avg[avg_stride],
+ _mm_castsi128_pd(v_running_avg));
+
+ // Accumulate the adjustments.
+ acc_diff = _mm_subs_epi8(acc_diff, padj);
+ acc_diff = _mm_adds_epi8(acc_diff, nadj);
+
+ // Update pointers for next iteration.
+ sig += sig_stride * 2;
+ mc_running_avg += mc_avg_stride * 2;
+ running_avg += avg_stride * 2;
+ }
+ abs_sum_diff = abs_sum_diff_16x1(acc_diff);
+ if (abs_sum_diff > sum_diff_thresh) {
+ return COPY_BLOCK;
+ }
+ } else {
return COPY_BLOCK;
+ }
}
}
- vp8_copy_mem16x16(running_avg->y_buffer + y_offset, avg_y_stride,
- signal->thismb, sig_stride);
+ vp8_copy_mem8x8(running_avg_start, avg_stride, sig_start, sig_stride);
return FILTER_BLOCK;
}
projects / platform / framework / web / crosswalk.git / blobdiff