示例#1
0
int vp8_denoiser_filter_c(YV12_BUFFER_CONFIG *mc_running_avg,
                          YV12_BUFFER_CONFIG *running_avg, MACROBLOCK *signal,
                          unsigned int motion_magnitude, int y_offset,
                          int uv_offset)
{
    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;
    int r, c, i;
    int sum_diff = 0;
    int adj_val[3] = {3, 4, 6};

    /* If motion_magnitude is small, making the denoiser more aggressive by
     * increasing the adjustment for each level. */
    if (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD)
    {
        for (i = 0; i < 3; i++)
            adj_val[i] += 1;
    }

    for (r = 0; r < 16; ++r)
    {
        for (c = 0; c < 16; ++c)
        {
            int diff = 0;
            int adjustment = 0;
            int absdiff = 0;

            diff = mc_running_avg_y[c] - sig[c];
            absdiff = abs(diff);

            /* When |diff| < 4, use pixel value from last denoised raw. */
            if (absdiff <= 3)
            {
                running_avg_y[c] = mc_running_avg_y[c];
                sum_diff += diff;
            }
            else
            {
                if (absdiff >= 4 && absdiff <= 7)
                    adjustment = adj_val[0];
                else if (absdiff >= 8 && absdiff <= 15)
                    adjustment = adj_val[1];
                else
                    adjustment = adj_val[2];

                if (diff > 0)
                {
                    if ((sig[c] + adjustment) > 255)
                        running_avg_y[c] = 255;
                    else
                        running_avg_y[c] = sig[c] + adjustment;

                    sum_diff += adjustment;
                }
                else
                {
                    if ((sig[c] - adjustment) < 0)
                        running_avg_y[c] = 0;
                    else
                        running_avg_y[c] = sig[c] - adjustment;

                    sum_diff -= adjustment;
                }
            }
        }

        /* Update pointers for next iteration. */
        sig += sig_stride;
        mc_running_avg_y += mc_avg_y_stride;
        running_avg_y += avg_y_stride;
    }

    if (abs(sum_diff) > SUM_DIFF_THRESHOLD)
        return COPY_BLOCK;

    vp8_copy_mem16x16(running_avg->y_buffer + y_offset, avg_y_stride,
                      signal->thismb, sig_stride);
    return FILTER_BLOCK;
}
示例#2
0
void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser,
                             MACROBLOCK *x,
                             unsigned int best_sse,
                             unsigned int zero_mv_sse,
                             int recon_yoffset,
                             int recon_uvoffset)
{
    int mv_row;
    int mv_col;
    unsigned int motion_magnitude2;

    MV_REFERENCE_FRAME frame = x->best_reference_frame;
    MV_REFERENCE_FRAME zero_frame = x->best_zeromv_reference_frame;

    enum vp8_denoiser_decision decision = FILTER_BLOCK;

    if (zero_frame)
    {
        YV12_BUFFER_CONFIG *src = &denoiser->yv12_running_avg[frame];
        YV12_BUFFER_CONFIG *dst = &denoiser->yv12_mc_running_avg;
        YV12_BUFFER_CONFIG saved_pre,saved_dst;
        MB_MODE_INFO saved_mbmi;
        MACROBLOCKD *filter_xd = &x->e_mbd;
        MB_MODE_INFO *mbmi = &filter_xd->mode_info_context->mbmi;
        int mv_col;
        int mv_row;
        int sse_diff = zero_mv_sse - best_sse;

        saved_mbmi = *mbmi;

        /* Use the best MV for the compensation. */
        mbmi->ref_frame = x->best_reference_frame;
        mbmi->mode = x->best_sse_inter_mode;
        mbmi->mv = x->best_sse_mv;
        mbmi->need_to_clamp_mvs = x->need_to_clamp_best_mvs;
        mv_col = x->best_sse_mv.as_mv.col;
        mv_row = x->best_sse_mv.as_mv.row;

        if (frame == INTRA_FRAME ||
            ((unsigned int)(mv_row *mv_row + mv_col *mv_col)
              <= NOISE_MOTION_THRESHOLD &&
             sse_diff < (int)SSE_DIFF_THRESHOLD))
        {
            /*
             * Handle intra blocks as referring to last frame with zero motion
             * and let the absolute pixel difference affect the filter factor.
             * Also consider small amount of motion as being random walk due
             * to noise, if it doesn't mean that we get a much bigger error.
             * Note that any changes to the mode info only affects the
             * denoising.
             */
            mbmi->ref_frame =
                    x->best_zeromv_reference_frame;

            src = &denoiser->yv12_running_avg[zero_frame];

            mbmi->mode = ZEROMV;
            mbmi->mv.as_int = 0;
            x->best_sse_inter_mode = ZEROMV;
            x->best_sse_mv.as_int = 0;
            best_sse = zero_mv_sse;
        }

        saved_pre = filter_xd->pre;
        saved_dst = filter_xd->dst;

        /* Compensate the running average. */
        filter_xd->pre.y_buffer = src->y_buffer + recon_yoffset;
        filter_xd->pre.u_buffer = src->u_buffer + recon_uvoffset;
        filter_xd->pre.v_buffer = src->v_buffer + recon_uvoffset;
        /* Write the compensated running average to the destination buffer. */
        filter_xd->dst.y_buffer = dst->y_buffer + recon_yoffset;
        filter_xd->dst.u_buffer = dst->u_buffer + recon_uvoffset;
        filter_xd->dst.v_buffer = dst->v_buffer + recon_uvoffset;

        if (!x->skip)
        {
            vp8_build_inter_predictors_mb(filter_xd);
        }
        else
        {
            vp8_build_inter16x16_predictors_mb(filter_xd,
                                               filter_xd->dst.y_buffer,
                                               filter_xd->dst.u_buffer,
                                               filter_xd->dst.v_buffer,
                                               filter_xd->dst.y_stride,
                                               filter_xd->dst.uv_stride);
        }
        filter_xd->pre = saved_pre;
        filter_xd->dst = saved_dst;
        *mbmi = saved_mbmi;

    }

    mv_row = x->best_sse_mv.as_mv.row;
    mv_col = x->best_sse_mv.as_mv.col;
    motion_magnitude2 = mv_row * mv_row + mv_col * mv_col;
    if (best_sse > SSE_THRESHOLD || motion_magnitude2
           > 8 * NOISE_MOTION_THRESHOLD)
    {
        decision = COPY_BLOCK;
    }

    if (decision == FILTER_BLOCK)
    {
        /* Filter. */
        decision = vp8_denoiser_filter(&denoiser->yv12_mc_running_avg,
                                       &denoiser->yv12_running_avg[INTRA_FRAME],
                                       x,
                                       motion_magnitude2,
                                       recon_yoffset, recon_uvoffset);
    }
    if (decision == COPY_BLOCK)
    {
        /* No filtering of this block; it differs too much from the predictor,
         * or the motion vector magnitude is considered too big.
         */
        vp8_copy_mem16x16(
                x->thismb, 16,
                denoiser->yv12_running_avg[INTRA_FRAME].y_buffer + recon_yoffset,
                denoiser->yv12_running_avg[INTRA_FRAME].y_stride);
    }
}
示例#3
0
static
THREAD_FUNCTION thread_encoding_proc(void *p_data)
{
    int ithread = ((ENCODETHREAD_DATA *)p_data)->ithread;
    VP8_COMP *cpi = (VP8_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr1);
    MB_ROW_COMP *mbri = (MB_ROW_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr2);
    ENTROPY_CONTEXT_PLANES mb_row_left_context;

    while (1)
    {
        if (cpi->b_multi_threaded == 0)
            break;

        if (sem_wait(&cpi->h_event_start_encoding[ithread]) == 0)
        {
            const int nsync = cpi->mt_sync_range;
            VP8_COMMON *cm = &cpi->common;
            int mb_row;
            MACROBLOCK *x = &mbri->mb;
            MACROBLOCKD *xd = &x->e_mbd;
            TOKENEXTRA *tp ;
#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
            TOKENEXTRA *tp_start = cpi->tok + (1 + ithread) * (16 * 24);
            const int num_part = (1 << cm->multi_token_partition);
#endif

            int *segment_counts = mbri->segment_counts;
            int *totalrate = &mbri->totalrate;

            if (cpi->b_multi_threaded == 0) /* we're shutting down */
                break;

            for (mb_row = ithread + 1; mb_row < cm->mb_rows; mb_row += (cpi->encoding_thread_count + 1))
            {

                int recon_yoffset, recon_uvoffset;
                int mb_col;
                int ref_fb_idx = cm->lst_fb_idx;
                int dst_fb_idx = cm->new_fb_idx;
                int recon_y_stride = cm->yv12_fb[ref_fb_idx].y_stride;
                int recon_uv_stride = cm->yv12_fb[ref_fb_idx].uv_stride;
                int map_index = (mb_row * cm->mb_cols);
                volatile const int *last_row_current_mb_col;
                volatile int *current_mb_col = &cpi->mt_current_mb_col[mb_row];

#if  (CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)
                vp8_writer *w = &cpi->bc[1 + (mb_row % num_part)];
#else
                tp = cpi->tok + (mb_row * (cm->mb_cols * 16 * 24));
                cpi->tplist[mb_row].start = tp;
#endif

                last_row_current_mb_col = &cpi->mt_current_mb_col[mb_row - 1];

                /* reset above block coeffs */
                xd->above_context = cm->above_context;
                xd->left_context = &mb_row_left_context;

                vp8_zero(mb_row_left_context);

                xd->up_available = (mb_row != 0);
                recon_yoffset = (mb_row * recon_y_stride * 16);
                recon_uvoffset = (mb_row * recon_uv_stride * 8);

                /* Set the mb activity pointer to the start of the row. */
                x->mb_activity_ptr = &cpi->mb_activity_map[map_index];

                /* for each macroblock col in image */
                for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
                {
                    *current_mb_col = mb_col - 1;

                    if ((mb_col & (nsync - 1)) == 0)
                    {
                        while (mb_col > (*last_row_current_mb_col - nsync))
                        {
                            x86_pause_hint();
                            thread_sleep(0);
                        }
                    }

#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
                    tp = tp_start;
#endif

                    /* Distance of Mb to the various image edges.
                     * These specified to 8th pel as they are always compared
                     * to values that are in 1/8th pel units
                     */
                    xd->mb_to_left_edge = -((mb_col * 16) << 3);
                    xd->mb_to_right_edge = ((cm->mb_cols - 1 - mb_col) * 16) << 3;
                    xd->mb_to_top_edge = -((mb_row * 16) << 3);
                    xd->mb_to_bottom_edge = ((cm->mb_rows - 1 - mb_row) * 16) << 3;

                    /* Set up limit values for motion vectors used to prevent
                     * them extending outside the UMV borders
                     */
                    x->mv_col_min = -((mb_col * 16) + (VP8BORDERINPIXELS - 16));
                    x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + (VP8BORDERINPIXELS - 16);
                    x->mv_row_min = -((mb_row * 16) + (VP8BORDERINPIXELS - 16));
                    x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16) + (VP8BORDERINPIXELS - 16);

                    xd->dst.y_buffer = cm->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset;
                    xd->dst.u_buffer = cm->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset;
                    xd->dst.v_buffer = cm->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset;
                    xd->left_available = (mb_col != 0);

                    x->rddiv = cpi->RDDIV;
                    x->rdmult = cpi->RDMULT;

                    /* Copy current mb to a buffer */
                    vp8_copy_mem16x16(x->src.y_buffer, x->src.y_stride, x->thismb, 16);

                    if (cpi->oxcf.tuning == VP8_TUNE_SSIM)
                        vp8_activity_masking(cpi, x);

                    /* Is segmentation enabled */
                    /* MB level adjustment to quantizer */
                    if (xd->segmentation_enabled)
                    {
                        /* Code to set segment id in xd->mbmi.segment_id for
                         * current MB (with range checking)
                         */
                        if (cpi->segmentation_map[map_index + mb_col] <= 3)
                            xd->mode_info_context->mbmi.segment_id = cpi->segmentation_map[map_index + mb_col];
                        else
                            xd->mode_info_context->mbmi.segment_id = 0;

                        vp8cx_mb_init_quantizer(cpi, x, 1);
                    }
                    else
                        /* Set to Segment 0 by default */
                        xd->mode_info_context->mbmi.segment_id = 0;

                    x->active_ptr = cpi->active_map + map_index + mb_col;

                    if (cm->frame_type == KEY_FRAME)
                    {
                        *totalrate += vp8cx_encode_intra_macroblock(cpi, x, &tp);
#ifdef MODE_STATS
                        y_modes[xd->mbmi.mode] ++;
#endif
                    }
                    else
                    {
                        *totalrate += vp8cx_encode_inter_macroblock(cpi, x, &tp, recon_yoffset, recon_uvoffset, mb_row, mb_col);

#ifdef MODE_STATS
                        inter_y_modes[xd->mbmi.mode] ++;

                        if (xd->mbmi.mode == SPLITMV)
                        {
                            int b;

                            for (b = 0; b < xd->mbmi.partition_count; b++)
                            {
                                inter_b_modes[x->partition->bmi[b].mode] ++;
                            }
                        }

#endif

                        /* Special case code for cyclic refresh
                         * If cyclic update enabled then copy
                         * xd->mbmi.segment_id; (which may have been updated
                         * based on mode during
                         * vp8cx_encode_inter_macroblock()) back into the
                         * global segmentation map
                         */
                        if (cpi->cyclic_refresh_mode_enabled && xd->segmentation_enabled)
                        {
                            const MB_MODE_INFO * mbmi = &xd->mode_info_context->mbmi;
                            cpi->segmentation_map[map_index + mb_col] = mbmi->segment_id;

                            /* If the block has been refreshed mark it as clean
                             * (the magnitude of the -ve influences how long it
                             * will be before we consider another refresh):
                             * Else if it was coded (last frame 0,0) and has
                             * not already been refreshed then mark it as a
                             * candidate for cleanup next time (marked 0) else
                             * mark it as dirty (1).
                             */
                            if (mbmi->segment_id)
                                cpi->cyclic_refresh_map[map_index + mb_col] = -1;
                            else if ((mbmi->mode == ZEROMV) && (mbmi->ref_frame == LAST_FRAME))
                            {
                                if (cpi->cyclic_refresh_map[map_index + mb_col] == 1)
                                    cpi->cyclic_refresh_map[map_index + mb_col] = 0;
                            }
                            else
                                cpi->cyclic_refresh_map[map_index + mb_col] = 1;

                        }
                    }

#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
                    /* pack tokens for this MB */
                    {
                        int tok_count = tp - tp_start;
                        pack_tokens(w, tp_start, tok_count);
                    }
#else
                    cpi->tplist[mb_row].stop = tp;
#endif
                    /* Increment pointer into gf usage flags structure. */
                    x->gf_active_ptr++;

                    /* Increment the activity mask pointers. */
                    x->mb_activity_ptr++;

                    /* adjust to the next column of macroblocks */
                    x->src.y_buffer += 16;
                    x->src.u_buffer += 8;
                    x->src.v_buffer += 8;

                    recon_yoffset += 16;
                    recon_uvoffset += 8;

                    /* Keep track of segment usage */
                    segment_counts[xd->mode_info_context->mbmi.segment_id]++;

                    /* skip to next mb */
                    xd->mode_info_context++;
                    x->partition_info++;
                    xd->above_context++;
                }

                vp8_extend_mb_row( &cm->yv12_fb[dst_fb_idx],
                                    xd->dst.y_buffer + 16,
                                    xd->dst.u_buffer + 8,
                                    xd->dst.v_buffer + 8);

                *current_mb_col = mb_col + nsync;

                /* this is to account for the border */
                xd->mode_info_context++;
                x->partition_info++;

                x->src.y_buffer += 16 * x->src.y_stride * (cpi->encoding_thread_count + 1) - 16 * cm->mb_cols;
                x->src.u_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
                x->src.v_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;

                xd->mode_info_context += xd->mode_info_stride * cpi->encoding_thread_count;
                x->partition_info += xd->mode_info_stride * cpi->encoding_thread_count;
                x->gf_active_ptr   += cm->mb_cols * cpi->encoding_thread_count;

                if (mb_row == cm->mb_rows - 1)
                {
                    sem_post(&cpi->h_event_end_encoding); /* signal frame encoding end */
                }
            }
        }
    }

    /* printf("exit thread %d\n", ithread); */
    return 0;
}
示例#4
0
int vp8_denoiser_filter_neon(YV12_BUFFER_CONFIG *mc_running_avg,
                             YV12_BUFFER_CONFIG *running_avg,
                             MACROBLOCK *signal, unsigned int motion_magnitude,
                             int y_offset, int uv_offset) {
    /* If motion_magnitude is small, making the denoiser more aggressive by
     * increasing the adjustment for each level, level1 adjustment is
     * increased, the deltas stay the same.
     */
    const uint8x16_t v_level1_adjustment = vdupq_n_u8(
        (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 4 : 3);
    const uint8x16_t v_delta_level_1_and_2 = vdupq_n_u8(1);
    const uint8x16_t v_delta_level_2_and_3 = vdupq_n_u8(2);
    const uint8x16_t v_level1_threshold = vdupq_n_u8(4);
    const uint8x16_t v_level2_threshold = vdupq_n_u8(8);
    const uint8x16_t v_level3_threshold = vdupq_n_u8(16);

    /* Local variables for array pointers and strides. */
    unsigned char *sig = signal->thismb;
    int            sig_stride = 16;
    unsigned char *mc_running_avg_y = mc_running_avg->y_buffer + y_offset;
    int            mc_running_avg_y_stride = mc_running_avg->y_stride;
    unsigned char *running_avg_y = running_avg->y_buffer + y_offset;
    int            running_avg_y_stride = running_avg->y_stride;

    /* Go over lines. */
    int i;
    int sum_diff = 0;
    for (i = 0; i < 16; ++i) {
        int8x16_t v_sum_diff = vdupq_n_s8(0);
        uint8x16_t v_running_avg_y;

        /* Load inputs. */
        const uint8x16_t v_sig = vld1q_u8(sig);
        const uint8x16_t v_mc_running_avg_y = vld1q_u8(mc_running_avg_y);

        /* Calculate absolute difference and sign masks. */
        const uint8x16_t v_abs_diff      = vabdq_u8(v_sig, v_mc_running_avg_y);
        const uint8x16_t v_diff_pos_mask = vcltq_u8(v_sig, v_mc_running_avg_y);
        const uint8x16_t v_diff_neg_mask = vcgtq_u8(v_sig, v_mc_running_avg_y);

        /* Figure out which level that put us in. */
        const uint8x16_t v_level1_mask = vcleq_u8(v_level1_threshold,
                                                  v_abs_diff);
        const uint8x16_t v_level2_mask = vcleq_u8(v_level2_threshold,
                                                  v_abs_diff);
        const uint8x16_t v_level3_mask = vcleq_u8(v_level3_threshold,
                                                  v_abs_diff);

        /* Calculate absolute adjustments for level 1, 2 and 3. */
        const uint8x16_t v_level2_adjustment = vandq_u8(v_level2_mask,
                                                        v_delta_level_1_and_2);
        const uint8x16_t v_level3_adjustment = vandq_u8(v_level3_mask,
                                                        v_delta_level_2_and_3);
        const uint8x16_t v_level1and2_adjustment = vaddq_u8(v_level1_adjustment,
            v_level2_adjustment);
        const uint8x16_t v_level1and2and3_adjustment = vaddq_u8(
            v_level1and2_adjustment, v_level3_adjustment);

        /* Figure adjustment absolute value by selecting between the absolute
         * difference if in level0 or the value for level 1, 2 and 3.
         */
        const uint8x16_t v_abs_adjustment = vbslq_u8(v_level1_mask,
            v_level1and2and3_adjustment, v_abs_diff);

        /* Calculate positive and negative adjustments. Apply them to the signal
         * and accumulate them. Adjustments are less than eight and the maximum
         * sum of them (7 * 16) can fit in a signed char.
         */
        const uint8x16_t v_pos_adjustment = vandq_u8(v_diff_pos_mask,
                                                     v_abs_adjustment);
        const uint8x16_t v_neg_adjustment = vandq_u8(v_diff_neg_mask,
                                                     v_abs_adjustment);
        v_running_avg_y = vqaddq_u8(v_sig, v_pos_adjustment);
        v_running_avg_y = vqsubq_u8(v_running_avg_y, v_neg_adjustment);
        v_sum_diff = vqaddq_s8(v_sum_diff,
                               vreinterpretq_s8_u8(v_pos_adjustment));
        v_sum_diff = vqsubq_s8(v_sum_diff,
                               vreinterpretq_s8_u8(v_neg_adjustment));

        /* Store results. */
        vst1q_u8(running_avg_y, v_running_avg_y);

        /* Sum all the accumulators to have the sum of all pixel differences
         * for this macroblock.
         */
        {
            int s0 = vgetq_lane_s8(v_sum_diff,  0) +
                     vgetq_lane_s8(v_sum_diff,  1) +
                     vgetq_lane_s8(v_sum_diff,  2) +
                     vgetq_lane_s8(v_sum_diff,  3);
            int s1 = vgetq_lane_s8(v_sum_diff,  4) +
                     vgetq_lane_s8(v_sum_diff,  5) +
                     vgetq_lane_s8(v_sum_diff,  6) +
                     vgetq_lane_s8(v_sum_diff,  7);
            int s2 = vgetq_lane_s8(v_sum_diff,  8) +
                     vgetq_lane_s8(v_sum_diff,  9) +
                     vgetq_lane_s8(v_sum_diff, 10) +
                     vgetq_lane_s8(v_sum_diff, 11);
            int s3 = vgetq_lane_s8(v_sum_diff, 12) +
                     vgetq_lane_s8(v_sum_diff, 13) +
                     vgetq_lane_s8(v_sum_diff, 14) +
                     vgetq_lane_s8(v_sum_diff, 15);
            sum_diff += s0 + s1+ s2 + s3;
        }

        /* Update pointers for next iteration. */
        sig += sig_stride;
        mc_running_avg_y += mc_running_avg_y_stride;
        running_avg_y += running_avg_y_stride;
    }

    /* Too much adjustments => copy block. */
    if (abs(sum_diff) > SUM_DIFF_THRESHOLD)
        return COPY_BLOCK;

    /* Tell above level that block was filtered. */
    vp8_copy_mem16x16(running_avg->y_buffer + y_offset, running_avg_y_stride,
                      signal->thismb, sig_stride);
    return FILTER_BLOCK;
}
示例#5
0
static
THREAD_FUNCTION thread_encoding_proc(void *p_data)
{
    int ithread = ((ENCODETHREAD_DATA *)p_data)->ithread;
    VP8_COMP *cpi = (VP8_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr1);
    MB_ROW_COMP *mbri = (MB_ROW_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr2);
    ENTROPY_CONTEXT_PLANES mb_row_left_context;

    const int nsync = cpi->mt_sync_range;
    //printf("Started thread %d\n", ithread);

    while (1)
    {
        if (cpi->b_multi_threaded == 0)
            break;

        //if(WaitForSingleObject(cpi->h_event_mbrencoding[ithread], INFINITE) == WAIT_OBJECT_0)
        if (sem_wait(&cpi->h_event_start_encoding[ithread]) == 0)
        {
            VP8_COMMON *cm = &cpi->common;
            int mb_row;
            MACROBLOCK *x = &mbri->mb;
            MACROBLOCKD *xd = &x->e_mbd;
            TOKENEXTRA *tp ;

            int *segment_counts = mbri->segment_counts;
            int *totalrate = &mbri->totalrate;

            if (cpi->b_multi_threaded == 0) // we're shutting down
                break;

            for (mb_row = ithread + 1; mb_row < cm->mb_rows; mb_row += (cpi->encoding_thread_count + 1))
            {

                int recon_yoffset, recon_uvoffset;
                int mb_col;
                int ref_fb_idx = cm->lst_fb_idx;
                int dst_fb_idx = cm->new_fb_idx;
                int recon_y_stride = cm->yv12_fb[ref_fb_idx].y_stride;
                int recon_uv_stride = cm->yv12_fb[ref_fb_idx].uv_stride;
                int map_index = (mb_row * cm->mb_cols);
                volatile int *last_row_current_mb_col;

                tp = cpi->tok + (mb_row * (cm->mb_cols * 16 * 24));

                last_row_current_mb_col = &cpi->mt_current_mb_col[mb_row - 1];

                // reset above block coeffs
                xd->above_context = cm->above_context;
                xd->left_context = &mb_row_left_context;

                vp8_zero(mb_row_left_context);

                xd->up_available = (mb_row != 0);
                recon_yoffset = (mb_row * recon_y_stride * 16);
                recon_uvoffset = (mb_row * recon_uv_stride * 8);

                cpi->tplist[mb_row].start = tp;

                //printf("Thread mb_row = %d\n", mb_row);

                // Set the mb activity pointer to the start of the row.
                x->mb_activity_ptr = &cpi->mb_activity_map[map_index];

                // for each macroblock col in image
                for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
                {
                    if ((mb_col & (nsync - 1)) == 0)
                    {
                        while (mb_col > (*last_row_current_mb_col - nsync) && *last_row_current_mb_col != cm->mb_cols - 1)
                        {
                            x86_pause_hint();
                            thread_sleep(0);
                        }
                    }

                    // Distance of Mb to the various image edges.
                    // These specified to 8th pel as they are always compared to values that are in 1/8th pel units
                    xd->mb_to_left_edge = -((mb_col * 16) << 3);
                    xd->mb_to_right_edge = ((cm->mb_cols - 1 - mb_col) * 16) << 3;
                    xd->mb_to_top_edge = -((mb_row * 16) << 3);
                    xd->mb_to_bottom_edge = ((cm->mb_rows - 1 - mb_row) * 16) << 3;

                    // Set up limit values for motion vectors used to prevent them extending outside the UMV borders
                    x->mv_col_min = -((mb_col * 16) + (VP8BORDERINPIXELS - 16));
                    x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + (VP8BORDERINPIXELS - 16);
                    x->mv_row_min = -((mb_row * 16) + (VP8BORDERINPIXELS - 16));
                    x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16) + (VP8BORDERINPIXELS - 16);

                    xd->dst.y_buffer = cm->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset;
                    xd->dst.u_buffer = cm->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset;
                    xd->dst.v_buffer = cm->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset;
                    xd->left_available = (mb_col != 0);

                    x->rddiv = cpi->RDDIV;
                    x->rdmult = cpi->RDMULT;

                    //Copy current mb to a buffer
                    vp8_copy_mem16x16(x->src.y_buffer, x->src.y_stride, x->thismb, 16);

                    if (cpi->oxcf.tuning == VP8_TUNE_SSIM)
                        vp8_activity_masking(cpi, x);

                    // Is segmentation enabled
                    // MB level adjutment to quantizer
                    if (xd->segmentation_enabled)
                    {
                        // Code to set segment id in xd->mbmi.segment_id for current MB (with range checking)
                        if (cpi->segmentation_map[map_index + mb_col] <= 3)
                            xd->mode_info_context->mbmi.segment_id = cpi->segmentation_map[map_index + mb_col];
                        else
                            xd->mode_info_context->mbmi.segment_id = 0;

                        vp8cx_mb_init_quantizer(cpi, x, 1);
                    }
                    else
                        xd->mode_info_context->mbmi.segment_id = 0; // Set to Segment 0 by default

                    x->active_ptr = cpi->active_map + map_index + mb_col;

                    if (cm->frame_type == KEY_FRAME)
                    {
                        *totalrate += vp8cx_encode_intra_macro_block(cpi, x, &tp);
#ifdef MODE_STATS
                        y_modes[xd->mbmi.mode] ++;
#endif
                    }
                    else
                    {
                        *totalrate += vp8cx_encode_inter_macroblock(cpi, x, &tp, recon_yoffset, recon_uvoffset);

#ifdef MODE_STATS
                        inter_y_modes[xd->mbmi.mode] ++;

                        if (xd->mbmi.mode == SPLITMV)
                        {
                            int b;

                            for (b = 0; b < xd->mbmi.partition_count; b++)
                            {
                                inter_b_modes[x->partition->bmi[b].mode] ++;
                            }
                        }

#endif

                        // Count of last ref frame 0,0 useage
                        if ((xd->mode_info_context->mbmi.mode == ZEROMV) && (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME))
                            cpi->inter_zz_count++;

                        // Special case code for cyclic refresh
                        // If cyclic update enabled then copy xd->mbmi.segment_id; (which may have been updated based on mode
                        // during vp8cx_encode_inter_macroblock()) back into the global sgmentation map
                        if (cpi->cyclic_refresh_mode_enabled && xd->segmentation_enabled)
                        {
                            const MB_MODE_INFO * mbmi = &xd->mode_info_context->mbmi;
                            cpi->segmentation_map[map_index + mb_col] = mbmi->segment_id;

                            // If the block has been refreshed mark it as clean (the magnitude of the -ve influences how long it will be before we consider another refresh):
                            // Else if it was coded (last frame 0,0) and has not already been refreshed then mark it as a candidate for cleanup next time (marked 0)
                            // else mark it as dirty (1).
                            if (mbmi->segment_id)
                                cpi->cyclic_refresh_map[map_index + mb_col] = -1;
                            else if ((mbmi->mode == ZEROMV) && (mbmi->ref_frame == LAST_FRAME))
                            {
                                if (cpi->cyclic_refresh_map[map_index + mb_col] == 1)
                                    cpi->cyclic_refresh_map[map_index + mb_col] = 0;
                            }
                            else
                                cpi->cyclic_refresh_map[map_index + mb_col] = 1;

                        }
                    }
                    cpi->tplist[mb_row].stop = tp;

                    // Increment pointer into gf useage flags structure.
                    x->gf_active_ptr++;

                    // Increment the activity mask pointers.
                    x->mb_activity_ptr++;

                    // adjust to the next column of macroblocks
                    x->src.y_buffer += 16;
                    x->src.u_buffer += 8;
                    x->src.v_buffer += 8;

                    recon_yoffset += 16;
                    recon_uvoffset += 8;

                    // Keep track of segment useage
                    segment_counts[xd->mode_info_context->mbmi.segment_id]++;

                    // skip to next mb
                    xd->mode_info_context++;
                    x->partition_info++;
                    xd->above_context++;

                    cpi->mt_current_mb_col[mb_row] = mb_col;
                }

                //extend the recon for intra prediction
                vp8_extend_mb_row(
                    &cm->yv12_fb[dst_fb_idx],
                    xd->dst.y_buffer + 16,
                    xd->dst.u_buffer + 8,
                    xd->dst.v_buffer + 8);

                // this is to account for the border
                xd->mode_info_context++;
                x->partition_info++;

                x->src.y_buffer += 16 * x->src.y_stride * (cpi->encoding_thread_count + 1) - 16 * cm->mb_cols;
                x->src.u_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
                x->src.v_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;

                xd->mode_info_context += xd->mode_info_stride * cpi->encoding_thread_count;
                x->partition_info += xd->mode_info_stride * cpi->encoding_thread_count;
                x->gf_active_ptr   += cm->mb_cols * cpi->encoding_thread_count;

                if (mb_row == cm->mb_rows - 1)
                {
                    //SetEvent(cpi->h_event_main);
                    sem_post(&cpi->h_event_end_encoding); /* signal frame encoding end */
                }
            }
        }
    }

    //printf("exit thread %d\n", ithread);
    return 0;
}
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)
{
    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;
    int r;
    (void)uv_offset;
    __m128i acc_diff = _mm_setzero_si128();
    const __m128i k_0 = _mm_setzero_si128();
    const __m128i k_4 = _mm_set1_epi8(4);
    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);
    /* 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 (r = 0; r < 16; ++r)
    {
        /* 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]));
        __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);

        /* Update pointers for next iteration. */
        sig += sig_stride;
        mc_running_avg_y += mc_avg_y_stride;
        running_avg_y += avg_y_stride;
    }

    {
        /* 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)
        {
            return COPY_BLOCK;
        }
    }

    vp8_copy_mem16x16(running_avg->y_buffer + y_offset, avg_y_stride,
                      signal->thismb, sig_stride);
    return FILTER_BLOCK;
}