shithub: libvpx

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vp9: Move skinmap computation into multithreading loop.

Change-Id: Iebc9dd293d8b1449c0674c0295349297e9b90646

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -4129,6 +4129,10 @@

     (*(cpi->row_mt_sync_read_ptr))(&tile_data->row_mt_sync, sb_row,

                                    sb_col_in_tile);

+    if (cpi->use_skin_detection) {

+      vp9_compute_skin_sb(cpi, BLOCK_16X16, mi_row, mi_col);

+    }

+

     x->source_variance = UINT_MAX;

     vp9_zero(x->pred_mv);

     vp9_rd_cost_init(&dummy_rdc);

--- a/vp9/encoder/vp9_encoder.c

+++ b/vp9/encoder/vp9_encoder.c

@@ -3557,7 +3557,6 @@

       cpi->oxcf.content != VP9E_CONTENT_SCREEN &&

       cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) {

     cpi->use_skin_detection = 1;

-    vp9_compute_skin_map(cpi, BLOCK_16X16);

   }

   vp9_set_quantizer(cm, q);

--- a/vp9/encoder/vp9_noise_estimate.c

+++ b/vp9/encoder/vp9_noise_estimate.c

@@ -172,6 +172,7 @@

     int mi_row, mi_col;

     int num_low_motion = 0;

     int frame_low_motion = 1;

+    if (cpi->use_skin_detection) vp9_compute_skin_map(cpi, BLOCK_16X16);

     for (mi_row = 0; mi_row < cm->mi_rows; mi_row++) {

       for (mi_col = 0; mi_col < cm->mi_cols; mi_col++) {

         int bl_index = mi_row * cm->mi_cols + mi_col;

--- a/vp9/encoder/vp9_skin_detection.c

+++ b/vp9/encoder/vp9_skin_detection.c

@@ -37,8 +37,9 @@

   }

 }

-void vp9_compute_skin_map(VP9_COMP *const cpi, BLOCK_SIZE bsize) {

-  int mi_row, mi_col, num_bl;

+void vp9_compute_skin_sb(VP9_COMP *const cpi, BLOCK_SIZE bsize, int mi_row,

+                         int mi_col) {

+  int i, j, num_bl;

   VP9_COMMON *const cm = &cpi->common;

   const uint8_t *src_y = cpi->Source->y_buffer;

   const uint8_t *src_u = cpi->Source->u_buffer;

@@ -50,13 +51,17 @@

   const int shy = (y_bsize == 8) ? 3 : 4;

   const int shuv = shy - 1;

   const int fac = y_bsize / 8;

-  // Loop through blocks and set skin map based on center pixel of block.

-  // Ignore rightmost/bottom boundary blocks.

-  for (mi_row = 0; mi_row < cm->mi_rows - 1; mi_row += fac) {

+  const int y_shift = src_ystride * (mi_row << 3) + (mi_col << 3);

+  const int uv_shift = src_uvstride * (mi_row << 2) + (mi_col << 2);

+  src_y += y_shift;

+  src_u += uv_shift;

+  src_v += uv_shift;

+

+  for (i = mi_row; i < VPXMIN(mi_row + 7, cm->mi_rows - 1); i += fac) {

     num_bl = 0;

-    for (mi_col = 0; mi_col < cm->mi_cols - 1; mi_col += fac) {

+    for (j = mi_col; j < VPXMIN(mi_col + 7, cm->mi_cols - 1); j += fac) {

       int consec_zeromv = 0;

-      int bl_index = mi_row * cm->mi_cols + mi_col;

+      int bl_index = i * cm->mi_cols + j;

       int bl_index1 = bl_index + 1;

       int bl_index2 = bl_index + cm->mi_cols;

       int bl_index3 = bl_index2 + 1;

@@ -67,7 +72,7 @@

                                VPXMIN(cpi->consec_zero_mv[bl_index1],

                                       VPXMIN(cpi->consec_zero_mv[bl_index2],

                                              cpi->consec_zero_mv[bl_index3])));

-      cpi->skin_map[mi_row * cm->mi_cols + mi_col] =

+      cpi->skin_map[bl_index] =

           vp9_compute_skin_block(src_y, src_u, src_v, src_ystride, src_uvstride,

                                  bsize, consec_zeromv, 0);

       num_bl++;

@@ -78,6 +83,18 @@

     src_y += (src_ystride << shy) - (num_bl << shy);

     src_u += (src_uvstride << shuv) - (num_bl << shuv);

     src_v += (src_uvstride << shuv) - (num_bl << shuv);

+  }

+}

+

+void vp9_compute_skin_map(VP9_COMP *const cpi, BLOCK_SIZE bsize) {

+  int mi_row, mi_col;

+  VP9_COMMON *const cm = &cpi->common;

+  // Loop through blocks and set skin map based on center pixel of block.

+  // Ignore rightmost/bottom boundary blocks.

+  for (mi_row = 0; mi_row < cm->mi_rows - 1; mi_row += MI_BLOCK_SIZE) {

+    for (mi_col = 0; mi_col < cm->mi_cols - 1; mi_col += MI_BLOCK_SIZE) {

+      vp9_compute_skin_sb(cpi, bsize, mi_row, mi_col);

+    }

   }

 }

--- a/vp9/encoder/vp9_skin_detection.h

+++ b/vp9/encoder/vp9_skin_detection.h

@@ -25,6 +25,9 @@

                            int stride, int strideuv, int bsize,

                            int consec_zeromv, int curr_motion_magn);

+void vp9_compute_skin_sb(struct VP9_COMP *const cpi, BLOCK_SIZE bsize,

+                         int mi_row, int mi_col);

+

 void vp9_compute_skin_map(struct VP9_COMP *const cpi, BLOCK_SIZE bsize);

 #ifdef OUTPUT_YUV_SKINMAP