| /* |
| * 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 AV1_DECODER_OBU_H |
| #define AV1_DECODER_OBU_H |
| |
| #include "aom/aom_codec.h" |
| #include "av1/decoder/decoder.h" |
| |
| typedef struct { |
| size_t size; // Size (1 or 2 bytes) of the OBU header (including the |
| // optional OBU extension header) in the bitstream. |
| OBU_TYPE type; |
| int has_size_field; |
| int has_extension; |
| // The following fields come from the OBU extension header and therefore are |
| // only used if has_extension is true. |
| int temporal_layer_id; |
| int spatial_layer_id; |
| } ObuHeader; |
| |
| aom_codec_err_t aom_read_obu_header(uint8_t *buffer, size_t buffer_length, |
| size_t *consumed, ObuHeader *header, |
| int is_annexb); |
| |
| aom_codec_err_t aom_read_obu_header_and_size(const uint8_t *data, |
| size_t bytes_available, |
| int is_annexb, |
| ObuHeader *obu_header, |
| size_t *const payload_size, |
| size_t *const bytes_read); |
| |
| // 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 |