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, 54 insertions, 0 deletions

diff --git a/third_party/aom/av1/common/od_dering.h b/third_party/aom/av1/common/od_dering.h
new file mode 100644
index 000000000..4362001b4
--- /dev/null
+++ b/third_party/aom/av1/common/od_dering.h
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+
+#if !defined(_dering_H)
+#define _dering_H (1)
+
+#include "odintrin.h"
+
+#define OD_DERING_NBLOCKS (MAX_SB_SIZE / 8)
+
+/* We need to buffer three vertical lines. */
+#define OD_FILT_VBORDER (3)
+/* We only need to buffer three horizontal pixels too, but let's align to
+   16 bytes (8 x 16 bits) to make vectorization easier. */
+#define OD_FILT_HBORDER (8)
+#define OD_FILT_BSTRIDE ALIGN_POWER_OF_TWO(MAX_SB_SIZE + 2 * OD_FILT_HBORDER, 3)
+
+#define OD_DERING_VERY_LARGE (30000)
+#define OD_DERING_INBUF_SIZE \
+  (OD_FILT_BSTRIDE * (MAX_SB_SIZE + 2 * OD_FILT_VBORDER))
+
+extern const int OD_DIRECTION_OFFSETS_TABLE[8][3];
+
+typedef struct {
+  uint8_t by;
+  uint8_t bx;
+  uint8_t skip;
+} dering_list;
+
+typedef void (*od_filter_dering_direction_func)(uint16_t *y, int ystride,
+                                                const uint16_t *in,
+                                                int threshold, int dir,
+                                                int damping);
+void copy_dering_16bit_to_16bit(uint16_t *dst, int dstride, uint16_t *src,
+                                dering_list *dlist, int dering_count,
+                                int bsize);
+
+int get_filter_skip(int level);
+
+void od_dering(uint8_t *dst, int dstride, uint16_t *y, uint16_t *in, int xdec,
+               int ydec, int dir[OD_DERING_NBLOCKS][OD_DERING_NBLOCKS],
+               int *dirinit, int var[OD_DERING_NBLOCKS][OD_DERING_NBLOCKS],
+               int pli, dering_list *dlist, int dering_count, int level,
+               int clpf_strength, int clpf_damping, int dering_damping,
+               int coeff_shift, int skip_dering, int hbd);
+#endif