Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 64 insertions, 0 deletions

diff --git a/third_party/aom/av1/common/thread_common.h b/third_party/aom/av1/common/thread_common.h
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+++ b/third_party/aom/av1/common/thread_common.h
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+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AV1_COMMON_LOOPFILTER_THREAD_H_
+#define AV1_COMMON_LOOPFILTER_THREAD_H_
+#include "./aom_config.h"
+#include "av1/common/av1_loopfilter.h"
+#include "aom_util/aom_thread.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct AV1Common;
+struct FRAME_COUNTS;
+
+// Loopfilter row synchronization
+typedef struct AV1LfSyncData {
+#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;
+  int rows;
+
+  // Row-based parallel loopfilter data
+  LFWorkerData *lfdata;
+  int num_workers;
+} AV1LfSync;
+
+// Allocate memory for loopfilter row synchronization.
+void av1_loop_filter_alloc(AV1LfSync *lf_sync, struct AV1Common *cm, int rows,
+                           int width, int num_workers);
+
+// Deallocate loopfilter synchronization related mutex and data.
+void av1_loop_filter_dealloc(AV1LfSync *lf_sync);
+
+// Multi-threaded loopfilter that uses the tile threads.
+void av1_loop_filter_frame_mt(YV12_BUFFER_CONFIG *frame, struct AV1Common *cm,
+                              struct macroblockd_plane planes[MAX_MB_PLANE],
+                              int frame_filter_level, int y_only,
+                              int partial_frame, AVxWorker *workers,
+                              int num_workers, AV1LfSync *lf_sync);
+
+void av1_accumulate_frame_counts(struct FRAME_COUNTS *acc_counts,
+                                 struct FRAME_COUNTS *counts);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AV1_COMMON_LOOPFILTER_THREAD_H_