| /* |
| * 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_ |