libvpx: Pull from upstream

source/libvpx/vp9/decoder/vp9_dthread.h

+/*
+ *  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.
+ */
+
+#ifndef VP9_DECODER_VP9_DTHREAD_H_
+#define VP9_DECODER_VP9_DTHREAD_H_
+
+#include "./vpx_config.h"
+#include "vp9/common/vp9_loopfilter.h"
+#include "vp9/decoder/vp9_reader.h"
+#include "vp9/decoder/vp9_thread.h"
+
+struct macroblockd;
+struct VP9Common;
+struct VP9Decompressor;
+
+typedef struct TileWorkerData {
+  struct VP9Common *cm;
+  vp9_reader bit_reader;
+  DECLARE_ALIGNED(16, struct macroblockd, xd);
+  DECLARE_ALIGNED(16, int16_t, dqcoeff[MAX_MB_PLANE][64 * 64]);
+
+  // Row-based parallel loopfilter data
+  LFWorkerData lfdata;
+} TileWorkerData;
+
+// Loopfilter row synchronization
+typedef struct VP9LfSyncData {
+#if CONFIG_MULTITHREAD
+  pthread_mutex_t *mutex_;
+  pthread_cond_t *cond_;
+#endif
+  // Allocate memory to store the loop-filtered superblock index in each row.
+  int *cur_sb_col;
+  // The optimal sync_range for different resolution and platform should be
+  // determined by testing. Currently, it is chosen to be a power-of-2 number.
+  int sync_range;
+} VP9LfSync;
+
+// Allocate memory for loopfilter row synchronization.
+void vp9_loop_filter_alloc(struct VP9Common *cm, struct VP9LfSyncData *lf_sync,
+                           int rows, int width);
+
+// Deallocate loopfilter synchronization related mutex and data.
+void vp9_loop_filter_dealloc(struct VP9LfSyncData *lf_sync, int rows);
+
+// Multi-threaded loopfilter that uses the tile threads.
+void vp9_loop_filter_frame_mt(struct VP9Decompressor *pbi,
+                              struct VP9Common *cm,
+                              struct macroblockd *xd,
+                              int frame_filter_level,
+                              int y_only, int partial_frame);
+
+#endif  // VP9_DECODER_VP9_DTHREAD_H_