зеркало из https://github.com/mozilla/gecko-dev.git
49 строки
1.7 KiB
C
49 строки
1.7 KiB
C
/*
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* Copyright (c) 2017, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_COMMON_OBUDEC_H_
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#define AOM_COMMON_OBUDEC_H_
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#include "common/tools_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ObuDecInputContext {
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struct AvxInputContext *avx_ctx;
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uint8_t *buffer;
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size_t buffer_capacity;
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size_t bytes_buffered;
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int is_annexb;
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};
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// Returns 1 when file data starts (if Annex B stream, after reading the
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// size of the OBU) with what appears to be a Temporal Delimiter
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// OBU as defined by Section 5 of the AV1 bitstream specification.
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int file_is_obu(struct ObuDecInputContext *obu_ctx);
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// Reads one Temporal Unit from the input file. Returns 0 when a TU is
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// successfully read, 1 when end of file is reached, and less than 0 when an
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// error occurs. Stores TU data in 'buffer'. Reallocs buffer to match TU size,
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// returns buffer capacity via 'buffer_size', and returns size of buffered data
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// via 'bytes_read'.
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int obudec_read_temporal_unit(struct ObuDecInputContext *obu_ctx,
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uint8_t **buffer, size_t *bytes_read,
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size_t *buffer_size);
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void obudec_free(struct ObuDecInputContext *obu_ctx);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif // AOM_COMMON_OBUDEC_H_
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