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diff --git a/media/libaom/src/av1/decoder/obu.h b/media/libaom/src/av1/decoder/obu.h
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+/*
+ * Copyright (c) 2017, 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 AOM_AV1_DECODER_OBU_H_
+#define AOM_AV1_DECODER_OBU_H_
+
+#include "aom/aom_codec.h"
+#include "av1/decoder/decoder.h"
+
+// Try to decode one frame from a buffer.
+// Returns 1 if we decoded a frame,
+// 0 if we didn't decode a frame but that's okay
+// (eg, if there was a frame but we skipped it),
+// or -1 on error
+int aom_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
+ const uint8_t *data_end,
+ const uint8_t **p_data_end);
+
+aom_codec_err_t aom_get_num_layers_from_operating_point_idc(
+ int operating_point_idc, unsigned int *num_spatial_layers,
+ unsigned int *num_temporal_layers);
+
+#endif // AOM_AV1_DECODER_OBU_H_