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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_COMMON_OBUDEC_H_
#define AOM_COMMON_OBUDEC_H_
#include "common/tools_common.h"
#ifdef __cplusplus
extern "C" {
#endif
struct ObuDecInputContext {
struct AvxInputContext *avx_ctx;
uint8_t *buffer;
size_t buffer_capacity;
size_t bytes_buffered;
int is_annexb;
};
// Returns 1 when file data starts (if Annex B stream, after reading the
// size of the OBU) with what appears to be a Temporal Delimiter
// OBU as defined by Section 5 of the AV1 bitstream specification.
int file_is_obu(struct ObuDecInputContext *obu_ctx);
// Reads one Temporal Unit from the input file. Returns 0 when a TU is
// successfully read, 1 when end of file is reached, and less than 0 when an
// error occurs. Stores TU data in 'buffer'. Reallocs buffer to match TU size,
// returns buffer capacity via 'buffer_size', and returns size of buffered data
// via 'bytes_read'.
int obudec_read_temporal_unit(struct ObuDecInputContext *obu_ctx,
uint8_t **buffer, size_t *bytes_read,
size_t *buffer_size);
void obudec_free(struct ObuDecInputContext *obu_ctx);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif // AOM_COMMON_OBUDEC_H_
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