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, 111 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/context_tree.h b/third_party/aom/av1/encoder/context_tree.h
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+++ b/third_party/aom/av1/encoder/context_tree.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_ENCODER_CONTEXT_TREE_H_
+#define AV1_ENCODER_CONTEXT_TREE_H_
+
+#include "av1/common/blockd.h"
+#include "av1/encoder/block.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct AV1_COMP;
+struct AV1Common;
+struct ThreadData;
+
+// Structure to hold snapshot of coding context during the mode picking process
+typedef struct {
+  MODE_INFO mic;
+  MB_MODE_INFO_EXT mbmi_ext;
+#if CONFIG_PALETTE
+  uint8_t *color_index_map[2];
+#endif  // CONFIG_PALETTE
+#if CONFIG_VAR_TX
+  uint8_t *blk_skip[MAX_MB_PLANE];
+#endif
+
+  // dual buffer pointers, 0: in use, 1: best in store
+  tran_low_t *coeff[MAX_MB_PLANE];
+  tran_low_t *qcoeff[MAX_MB_PLANE];
+  tran_low_t *dqcoeff[MAX_MB_PLANE];
+#if CONFIG_PVQ
+  tran_low_t *pvq_ref_coeff[MAX_MB_PLANE];
+#endif
+  uint16_t *eobs[MAX_MB_PLANE];
+#if CONFIG_LV_MAP
+  uint8_t *txb_entropy_ctx[MAX_MB_PLANE];
+#endif
+
+  int num_4x4_blk;
+  int skip;
+  int pred_pixel_ready;
+  // For current partition, only if all Y, U, and V transform blocks'
+  // coefficients are quantized to 0, skippable is set to 0.
+  int skippable;
+  int best_mode_index;
+  int hybrid_pred_diff;
+  int comp_pred_diff;
+  int single_pred_diff;
+
+  // TODO(jingning) Use RD_COST struct here instead. This involves a boarder
+  // scope of refactoring.
+  int rate;
+  int64_t dist;
+
+  // motion vector cache for adaptive motion search control in partition
+  // search loop
+  MV pred_mv[TOTAL_REFS_PER_FRAME];
+  InterpFilter pred_interp_filter;
+#if CONFIG_EXT_PARTITION_TYPES
+  PARTITION_TYPE partition;
+#endif
+} PICK_MODE_CONTEXT;
+
+typedef struct PC_TREE {
+  int index;
+  PARTITION_TYPE partitioning;
+  BLOCK_SIZE block_size;
+  PICK_MODE_CONTEXT none;
+  PICK_MODE_CONTEXT horizontal[2];
+  PICK_MODE_CONTEXT vertical[2];
+#if CONFIG_EXT_PARTITION_TYPES
+  PICK_MODE_CONTEXT horizontala[3];
+  PICK_MODE_CONTEXT horizontalb[3];
+  PICK_MODE_CONTEXT verticala[3];
+  PICK_MODE_CONTEXT verticalb[3];
+#endif
+  union {
+    struct PC_TREE *split[4];
+    PICK_MODE_CONTEXT *leaf_split[4];
+  };
+#ifdef CONFIG_SUPERTX
+  PICK_MODE_CONTEXT horizontal_supertx;
+  PICK_MODE_CONTEXT vertical_supertx;
+  PICK_MODE_CONTEXT split_supertx;
+#if CONFIG_EXT_PARTITION_TYPES
+  PICK_MODE_CONTEXT horizontala_supertx;
+  PICK_MODE_CONTEXT horizontalb_supertx;
+  PICK_MODE_CONTEXT verticala_supertx;
+  PICK_MODE_CONTEXT verticalb_supertx;
+#endif
+#endif
+} PC_TREE;
+
+void av1_setup_pc_tree(struct AV1Common *cm, struct ThreadData *td);
+void av1_free_pc_tree(struct ThreadData *td);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif /* AV1_ENCODER_CONTEXT_TREE_H_ */