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diff --git a/third_party/aom/video_reader.h b/third_party/aom/video_reader.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 VIDEO_READER_H_
+#define VIDEO_READER_H_
+
+#include "./video_common.h"
+
+// The following code is work in progress. It is going to  support transparent
+// reading of input files. Right now only IVF format is supported for
+// simplicity. The main goal the API is to be simple and easy to use in example
+// code and in aomenc/aomdec later. All low-level details like memory
+// buffer management are hidden from API users.
+struct AvxVideoReaderStruct;
+typedef struct AvxVideoReaderStruct AvxVideoReader;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Opens the input file for reading and inspects it to determine file type.
+// Returns an opaque AvxVideoReader* upon success, or NULL upon failure.
+// Right now only IVF format is supported.
+AvxVideoReader *aom_video_reader_open(const char *filename);
+
+// Frees all resources associated with AvxVideoReader* returned from
+// aom_video_reader_open() call.
+void aom_video_reader_close(AvxVideoReader *reader);
+
+// Reads frame from the file and stores it in internal buffer.
+int aom_video_reader_read_frame(AvxVideoReader *reader);
+
+// Returns the pointer to memory buffer with frame data read by last call to
+// aom_video_reader_read_frame().
+const uint8_t *aom_video_reader_get_frame(AvxVideoReader *reader, size_t *size);
+
+// Fills AvxVideoInfo with information from opened video file.
+const AvxVideoInfo *aom_video_reader_get_info(AvxVideoReader *reader);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VIDEO_READER_H_