/*
* 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_MOTION_H
#define DE265_MOTION_H
#include <stdint.h>
class base_context;
class slice_segment_header;
class MotionVector
{
public:
int16_t x,y;
};
class PBMotion
{
public:
uint8_t predFlag[2]; // which of the two vectors is actually used
int8_t refIdx[2]; // index into RefPicList
MotionVector mv[2]; // the absolute motion vectors
bool operator==(const PBMotion&) const;
};
class PBMotionCoding
{
public:
// index into RefPicList
int8_t refIdx[2];
// motion vector difference
int16_t mvd[2][2]; // [L0/L1][x/y] (only in top left position - ???)
// enum InterPredIdc, whether this is prediction from L0,L1, or BI
uint8_t inter_pred_idc : 2;
// which of the two MVPs is used
uint8_t mvp_l0_flag : 1;
uint8_t mvp_l1_flag : 1;
// whether merge mode is used
uint8_t merge_flag : 1;
uint8_t merge_idx : 3;
};
void get_merge_candidate_list(base_context* ctx,
const slice_segment_header* shdr,
struct de265_image* img,
int xC,int yC, int xP,int yP,
int nCS, int nPbW,int nPbH, int partIdx,
PBMotion* mergeCandList);
void get_merge_candidate_list_from_tree(class encoder_context* ectx,
const slice_segment_header* shdr,
int xC,int yC, int xP,int yP,
int nCS, int nPbW,int nPbH, int partIdx,
PBMotion* mergeCandList);
/*
int derive_spatial_merging_candidates(const struct de265_image* img,
int xC, int yC, int nCS, int xP, int yP,
uint8_t singleMCLFlag,
int nPbW, int nPbH,
int partIdx,
MotionVectorSpec* out_cand,
int maxCandidates);
*/
void generate_inter_prediction_samples(base_context* ctx,
const slice_segment_header* shdr,
struct de265_image* img,
int xC,int yC,
int xB,int yB,
int nCS, int nPbW,int nPbH,
const PBMotion* vi);
/* Fill list (two entries) of motion-vector predictors for MVD coding.
*/
void fill_luma_motion_vector_predictors(base_context* ctx,
const slice_segment_header* shdr,
de265_image* img,
int xC,int yC,int nCS,int xP,int yP,
int nPbW,int nPbH, int l,
int refIdx, int partIdx,
MotionVector out_mvpList[2]);
void decode_prediction_unit(base_context* ctx,const slice_segment_header* shdr,
de265_image* img, const PBMotionCoding& motion,
int xC,int yC, int xB,int yB, int nCS, int nPbW,int nPbH, int partIdx);
#endif