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