mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 00:02:52 +00:00
4d70fbeec8
Fixes: runtime error: signed integer overflow: 2147483646 + 33554433 cannot be represented in type 'int' Fixes: 4563/clusterfuzz-testcase-minimized-5438979567517696 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
|
|
* Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_DIRAC_DWT_H
|
|
#define AVCODEC_DIRAC_DWT_H
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef int DWTELEM;
|
|
typedef short IDWTELEM;
|
|
|
|
#define MAX_DWT_SUPPORT 8
|
|
#define MAX_DECOMPOSITIONS 8
|
|
|
|
typedef struct DWTCompose {
|
|
uint8_t *b[MAX_DWT_SUPPORT];
|
|
int y;
|
|
} DWTCompose;
|
|
|
|
typedef struct DWTPlane {
|
|
int width;
|
|
int height;
|
|
int stride;
|
|
uint8_t *buf;
|
|
uint8_t *buf_base;
|
|
uint8_t *tmp;
|
|
} DWTPlane;
|
|
|
|
struct DWTContext;
|
|
|
|
// Possible prototypes for vertical_compose functions
|
|
typedef void (*vertical_compose_2tap)(uint8_t *b0, uint8_t *b1, int width);
|
|
typedef void (*vertical_compose_3tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, int width);
|
|
typedef void (*vertical_compose_5tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, uint8_t *b3, uint8_t *b4, int width);
|
|
typedef void (*vertical_compose_9tap)(uint8_t *dst, uint8_t *b[8], int width);
|
|
|
|
typedef struct DWTContext {
|
|
uint8_t *buffer;
|
|
uint8_t *temp;
|
|
int width;
|
|
int height;
|
|
int stride;
|
|
int decomposition_count;
|
|
int support;
|
|
|
|
void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride);
|
|
void (*vertical_compose_l0)(void);
|
|
void (*vertical_compose_h0)(void);
|
|
void (*vertical_compose_l1)(void);
|
|
void (*vertical_compose_h1)(void);
|
|
void (*vertical_compose)(void); ///< one set of lowpass and highpass combined
|
|
void (*horizontal_compose)(uint8_t *b, uint8_t *tmp, int width);
|
|
|
|
DWTCompose cs[MAX_DECOMPOSITIONS];
|
|
} DWTContext;
|
|
|
|
enum dwt_type {
|
|
DWT_SNOW_DAUB9_7,
|
|
DWT_SNOW_LEGALL5_3,
|
|
DWT_DIRAC_DD9_7,
|
|
DWT_DIRAC_LEGALL5_3,
|
|
DWT_DIRAC_DD13_7,
|
|
DWT_DIRAC_HAAR0,
|
|
DWT_DIRAC_HAAR1,
|
|
DWT_DIRAC_FIDELITY,
|
|
DWT_DIRAC_DAUB9_7,
|
|
DWT_NUM_TYPES
|
|
};
|
|
|
|
// -1 if an error occurred, e.g. the dwt_type isn't recognized
|
|
int ff_spatial_idwt_init(DWTContext *d, DWTPlane *p, enum dwt_type type,
|
|
int decomposition_count, int bit_depth);
|
|
void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type);
|
|
|
|
void ff_spatial_idwt_slice2(DWTContext *d, int y);
|
|
|
|
// shared stuff for simd optimizations
|
|
#define COMPOSE_53iL0(b0, b1, b2)\
|
|
(b1 - ((int)(b0 + (unsigned)(b2) + 2) >> 2))
|
|
|
|
#define COMPOSE_DIRAC53iH0(b0, b1, b2)\
|
|
(b1 + ((int)(b0 + (unsigned)(b2) + 1) >> 1))
|
|
|
|
#define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\
|
|
(int)(((unsigned)(b2) + ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 8) >> 4)))
|
|
|
|
#define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\
|
|
(int)(((unsigned)(b2) - ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 16) >> 5)))
|
|
|
|
#define COMPOSE_HAARiL0(b0, b1)\
|
|
(b0 - ((b1 + 1) >> 1))
|
|
|
|
#define COMPOSE_HAARiH0(b0, b1)\
|
|
(b0 + b1)
|
|
|
|
#define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
|
|
((unsigned)b4 - ((int)(-8*(b0+(unsigned)b8) + 21*(b1+(unsigned)b7) - 46*(b2+(unsigned)b6) + 161*(b3+(unsigned)b5) + 128) >> 8))
|
|
|
|
#define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
|
|
((unsigned)b4 + ((int)(-2*(b0+(unsigned)b8) + 10*(b1+(unsigned)b7) - 25*(b2+(unsigned)b6) + 81*(b3+(unsigned)b5) + 128) >> 8))
|
|
|
|
#define COMPOSE_DAUB97iL1(b0, b1, b2)\
|
|
((unsigned)(b1) - ((int)(1817*(b0 + (unsigned)b2) + 2048) >> 12))
|
|
|
|
#define COMPOSE_DAUB97iH1(b0, b1, b2)\
|
|
((unsigned)(b1) - ((int)( 113*(b0 + (unsigned)b2) + 64) >> 7))
|
|
|
|
#define COMPOSE_DAUB97iL0(b0, b1, b2)\
|
|
((unsigned)(b1) + ((int)( 217*(b0 + (unsigned)b2) + 2048) >> 12))
|
|
|
|
#define COMPOSE_DAUB97iH0(b0, b1, b2)\
|
|
((unsigned)(b1) + ((int)(6497*(b0 + (unsigned)b2) + 2048) >> 12))
|
|
|
|
|
|
#endif /* AVCODEC_DWT_H */
|