Cleaning up vp9_dthread.{c, h}.

Change-Id: If33087462293605f79d9281af133091fff33a876

1 files changed, 17 insertions, 23 deletions

diff --git a/vp9/decoder/vp9_dthread.c b/vp9/decoder/vp9_dthread.c
index 9b124c9d9..9098063ce 100644
--- a/vp9/decoder/vp9_dthread.c
+++ b/vp9/decoder/vp9_dthread.c
@@ -40,13 +40,13 @@ static INLINE void sync_read(VP9LfSync *const lf_sync, int r, int c) {
   const int nsync = lf_sync->sync_range;
 
   if (r && !(c & (nsync - 1))) {
-    mutex_lock(&lf_sync->mutex_[r - 1]);
+    pthread_mutex_t *const mutex = &lf_sync->mutex_[r - 1];
+    mutex_lock(mutex);
 
     while (c > lf_sync->cur_sb_col[r - 1] - nsync) {
-      pthread_cond_wait(&lf_sync->cond_[r - 1],
-                        &lf_sync->mutex_[r - 1]);
+      pthread_cond_wait(&lf_sync->cond_[r - 1], mutex);
     }
-    pthread_mutex_unlock(&lf_sync->mutex_[r - 1]);
+    pthread_mutex_unlock(mutex);
   }
 #else
   (void)lf_sync;
@@ -94,21 +94,21 @@ static void loop_filter_rows_mt(const YV12_BUFFER_CONFIG *const frame_buffer,
                                 VP9LfSync *const lf_sync, int num_lf_workers) {
   const int num_planes = y_only ? 1 : MAX_MB_PLANE;
   int r, c;  // SB row and col
-  LOOP_FILTER_MASK lfm;
   const int sb_cols = mi_cols_aligned_to_sb(cm->mi_cols) >> MI_BLOCK_SIZE_LOG2;
 
   for (r = start; r < stop; r += num_lf_workers) {
     const int mi_row = r << MI_BLOCK_SIZE_LOG2;
-    MODE_INFO **mi_8x8 = cm->mi_grid_visible + mi_row * cm->mi_stride;
+    MODE_INFO **const mi = cm->mi_grid_visible + mi_row * cm->mi_stride;
 
     for (c = 0; c < sb_cols; ++c) {
       const int mi_col = c << MI_BLOCK_SIZE_LOG2;
+      LOOP_FILTER_MASK lfm;
       int plane;
 
       sync_read(lf_sync, r, c);
 
       vp9_setup_dst_planes(xd, frame_buffer, mi_row, mi_col);
-      vp9_setup_mask(cm, mi_row, mi_col, mi_8x8 + mi_col, cm->mi_stride, &lfm);
+      vp9_setup_mask(cm, mi_row, mi_col, mi + mi_col, cm->mi_stride, &lfm);
 
       for (plane = 0; plane < num_planes; ++plane) {
         vp9_filter_block_plane(cm, &xd->plane[plane], mi_row, &lfm);
@@ -134,9 +134,9 @@ static int loop_filter_row_worker(void *arg1, void *arg2) {
 // threads.
 void vp9_loop_filter_frame_mt(VP9Decoder *pbi,
                               VP9_COMMON *cm,
-                              MACROBLOCKD *xd,
                               int frame_filter_level,
                               int y_only, int partial_frame) {
+  VP9LfSync *const lf_sync = &pbi->lf_row_sync;
   // Number of superblock rows and cols
   const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
   const int tile_cols = 1 << cm->log2_tile_cols;
@@ -146,8 +146,6 @@ void vp9_loop_filter_frame_mt(VP9Decoder *pbi,
   // Allocate memory used in thread synchronization.
   // This always needs to be done even if frame_filter_level is 0.
   if (!cm->current_video_frame || cm->last_height != cm->height) {
-    VP9LfSync *const lf_sync = &pbi->lf_row_sync;
-
     if (cm->last_height != cm->height) {
       const int aligned_last_height =
           ALIGN_POWER_OF_TWO(cm->last_height, MI_SIZE_LOG2);
@@ -166,8 +164,7 @@ void vp9_loop_filter_frame_mt(VP9Decoder *pbi,
   vp9_loop_filter_frame_init(cm, frame_filter_level);
 
   // Initialize cur_sb_col to -1 for all SB rows.
-  vpx_memset(pbi->lf_row_sync.cur_sb_col, -1,
-             sizeof(*pbi->lf_row_sync.cur_sb_col) * sb_rows);
+  vpx_memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows);
 
   // Set up loopfilter thread data.
   // The decoder is using num_workers instead of pbi->num_tile_workers
@@ -194,7 +191,7 @@ void vp9_loop_filter_frame_mt(VP9Decoder *pbi,
     lf_data->stop = sb_rows;
     lf_data->y_only = y_only;   // always do all planes in decoder
 
-    lf_data->lf_sync = &pbi->lf_row_sync;
+    lf_data->lf_sync = lf_sync;
     lf_data->num_lf_workers = num_workers;
 
     // Start loopfiltering
@@ -253,8 +250,12 @@ void vp9_loop_filter_alloc(VP9_COMMON *cm, VP9LfSync *lf_sync, int rows,
 
 // Deallocate lf synchronization related mutex and data
 void vp9_loop_filter_dealloc(VP9LfSync *lf_sync, int rows) {
-#if CONFIG_MULTITHREAD
+#if !CONFIG_MULTITHREAD
+  (void)rows;
+#endif  // !CONFIG_MULTITHREAD
+
   if (lf_sync != NULL) {
+#if CONFIG_MULTITHREAD
     int i;
 
     if (lf_sync->mutex_ != NULL) {
@@ -269,17 +270,10 @@ void vp9_loop_filter_dealloc(VP9LfSync *lf_sync, int rows) {
       }
       vpx_free(lf_sync->cond_);
     }
-
+#endif  // CONFIG_MULTITHREAD
     vpx_free(lf_sync->cur_sb_col);
     // clear the structure as the source of this call may be a resize in which
     // case this call will be followed by an _alloc() which may fail.
-    vpx_memset(lf_sync, 0, sizeof(*lf_sync));
+    vp9_zero(*lf_sync);
   }
-#else
-  (void)rows;
-  if (lf_sync != NULL) {
-    vpx_free(lf_sync->cur_sb_col);
-    vpx_memset(lf_sync, 0, sizeof(*lf_sync));
-  }
-#endif  // CONFIG_MULTITHREAD
 }