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, 52 insertions, 0 deletions

diff --git a/third_party/aom/av1/common/cfl.h b/third_party/aom/av1/common/cfl.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_CFL_H_
+#define AV1_COMMON_CFL_H_
+
+#include "av1/common/enums.h"
+
+// Forward declaration of AV1_COMMON, in order to avoid creating a cyclic
+// dependency by importing av1/common/onyxc_int.h
+typedef struct AV1Common AV1_COMMON;
+
+// Forward declaration of MACROBLOCK, in order to avoid creating a cyclic
+// dependency by importing av1/common/blockd.h
+typedef struct macroblockd MACROBLOCKD;
+
+typedef struct {
+  // Pixel buffer containing the luma pixels used as prediction for chroma
+  uint8_t y_pix[MAX_SB_SQUARE];
+
+  // Height and width of the luma prediction block currently in the pixel buffer
+  int y_height, y_width;
+
+  // Chroma subsampling
+  int subsampling_x, subsampling_y;
+
+  // CfL Performs its own block level DC_PRED for each chromatic plane
+  int dc_pred[CFL_PRED_PLANES];
+} CFL_CTX;
+
+void cfl_init(CFL_CTX *cfl, AV1_COMMON *cm, int subsampling_x,
+              int subsampling_y);
+
+void cfl_dc_pred(MACROBLOCKD *xd, BLOCK_SIZE plane_bsize, TX_SIZE tx_size);
+
+void cfl_predict_block(const CFL_CTX *cfl, uint8_t *dst, int dst_stride,
+                       int row, int col, TX_SIZE tx_size, int dc_pred);
+
+void cfl_store(CFL_CTX *cfl, const uint8_t *input, int input_stride, int row,
+               int col, TX_SIZE tx_size);
+
+double cfl_load(const CFL_CTX *cfl, uint8_t *output, int output_stride, int row,
+                int col, TX_SIZE tx_size);
+#endif  // AV1_COMMON_CFL_H_