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Diffstat (limited to 'libavcodec/dirac_dwt.h')
-rw-r--r-- | libavcodec/dirac_dwt.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libavcodec/dirac_dwt.h b/libavcodec/dirac_dwt.h new file mode 100644 index 0000000..68ebd19 --- /dev/null +++ b/libavcodec/dirac_dwt.h @@ -0,0 +1,132 @@ +/* + * 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 - (unsigned)((int)(b0 + (unsigned)(b2) + 2) >> 2)) + +#define COMPOSE_DIRAC53iH0(b0, b1, b2)\ + (b1 + (unsigned)((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)\ + ((int)(b0 - (unsigned)((int)(b1 + 1U) >> 1))) + +#define COMPOSE_HAARiH0(b0, b1)\ + ((int)(b0 + (unsigned)(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 */ |