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62 lines
2.2 KiB
62 lines
2.2 KiB
2 years ago
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/*
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* H.265 video codec.
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* Copyright (c) 2013-2014 struktur AG, Dirk Farin <farin@struktur.de>
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*
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* This file is part of libde265.
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*
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* libde265 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libde265 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libde265. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef DE265_REFPIC_H
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#define DE265_REFPIC_H
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#include "libde265/bitstream.h"
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#define MAX_NUM_REF_PICS 16 // maximum defined by standard, may be lower for some Levels
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class ref_pic_set
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{
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public:
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// Lists of pictures that have to be kept in the decoded picture buffer for future
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// reference and that may optionally be used for prediction in the current frame.
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// Lists contain the relative POC positions.
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int16_t DeltaPocS0[MAX_NUM_REF_PICS]; // sorted in decreasing order (e.g. -1, -2, -4, -7, ...)
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int16_t DeltaPocS1[MAX_NUM_REF_PICS]; // sorted in ascending order (e.g. 1, 2, 4, 7)
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// flag for each reference whether this is actually used for prediction in the current frame
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uint8_t UsedByCurrPicS0[MAX_NUM_REF_PICS];
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uint8_t UsedByCurrPicS1[MAX_NUM_REF_PICS];
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uint8_t NumNegativePics; // number of past reference pictures
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uint8_t NumPositivePics; // number of future reference pictures
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// --- derived values ---
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void compute_derived_values();
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uint8_t NumDeltaPocs; // total number of reference pictures (past + future)
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uint8_t NumPocTotalCurr_shortterm_only; /* Total number of reference pictures that may actually
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be used for prediction in the current frame. */
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void reset();
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};
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void dump_short_term_ref_pic_set(const ref_pic_set*, FILE* fh);
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void dump_compact_short_term_ref_pic_set(const ref_pic_set* set, int range, FILE* fh);
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#endif
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