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/*
* 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_DWT_H
#define AVCODEC_DWT_H
#include <stdint.h>
typedef int DWTELEM;
typedef short IDWTELEM;
#define MAX_DWT_SUPPORT 8
#define MAX_DECOMPOSITIONS 8
typedef struct {
IDWTELEM *b[MAX_DWT_SUPPORT];
IDWTELEM *b0;
IDWTELEM *b1;
IDWTELEM *b2;
IDWTELEM *b3;
int y;
} DWTCompose;
/** Used to minimize the amount of memory used in order to
* optimize cache performance. **/
typedef struct slice_buffer_s {
IDWTELEM **line; ///< For use by idwt and predict_slices.
IDWTELEM **data_stack; ///< Used for internal purposes.
int data_stack_top;
int line_count;
int line_width;
int data_count;
IDWTELEM *base_buffer; ///< Buffer that this structure is caching.
} slice_buffer;
struct DWTContext;
// Possible prototypes for vertical_compose functions
typedef void (*vertical_compose_2tap)(IDWTELEM *b0, IDWTELEM *b1, int width);
typedef void (*vertical_compose_3tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width);
typedef void (*vertical_compose_5tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width);
typedef void (*vertical_compose_9tap)(IDWTELEM *dst, IDWTELEM *b[8], int width);
typedef struct DWTContext {
IDWTELEM *buffer;
IDWTELEM *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)(IDWTELEM *b, IDWTELEM *tmp, int width);
void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
int width);
void (*horizontal_compose97i)(IDWTELEM *b, IDWTELEM *temp, int width);
void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride,
uint8_t **block, int b_w, int b_h, int src_x,
int src_y, int src_stride, slice_buffer *sb,
int add, uint8_t *dst8);
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_init2(DWTContext *d, IDWTELEM *buffer, int width, int height,
int stride, enum dwt_type type, int decomposition_count,
IDWTELEM *temp);
int ff_spatial_idwt2(IDWTELEM *buffer, int width, int height, int stride,
enum dwt_type type, int decomposition_count, IDWTELEM *temp);
void ff_spatial_idwt_slice2(DWTContext *d, int y);
// shared stuff for simd optimiztions
#define COMPOSE_53iL0(b0, b1, b2)\
(b1 - ((b0 + b2 + 2) >> 2))
#define COMPOSE_DIRAC53iH0(b0, b1, b2)\
(b1 + ((b0 + b2 + 1) >> 1))
#define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\
(b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4))
#define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\
(b2 - ((-b0 + 9*b1 + 9*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)\
(b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8))
#define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
(b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8))
#define COMPOSE_DAUB97iL1(b0, b1, b2)\
(b1 - ((1817*(b0 + b2) + 2048) >> 12))
#define COMPOSE_DAUB97iH1(b0, b1, b2)\
(b1 - (( 113*(b0 + b2) + 64) >> 7))
#define COMPOSE_DAUB97iL0(b0, b1, b2)\
(b1 + (( 217*(b0 + b2) + 2048) >> 12))
#define COMPOSE_DAUB97iH0(b0, b1, b2)\
(b1 + ((6497*(b0 + b2) + 2048) >> 12))
#define DWT_97 0
#define DWT_53 1
#define liftS lift
#define W_AM 3
#define W_AO 0
#define W_AS 1
#undef liftS
#define W_BM 1
#define W_BO 8
#define W_BS 4
#define W_CM 1
#define W_CO 0
#define W_CS 0
#define W_DM 3
#define W_DO 4
#define W_DS 3
#define slice_buffer_get_line(slice_buf, line_num) \
((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \
: ff_slice_buffer_load_line((slice_buf), \
(line_num)))
int ff_slice_buffer_init(slice_buffer *buf, int line_count,
int max_allocated_lines, int line_width,
IDWTELEM *base_buffer);
void ff_slice_buffer_release(slice_buffer *buf, int line);
void ff_slice_buffer_flush(slice_buffer *buf);
void ff_slice_buffer_destroy(slice_buffer *buf);
IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line);
void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
int width);
void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width);
void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride,
uint8_t **block, int b_w, int b_h, int src_x,
int src_y, int src_stride, slice_buffer *sb,
int add, uint8_t *dst8);
int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride,
int type, int decomposition_count);
void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
int height, int stride_line, int type,
int decomposition_count);
void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs,
slice_buffer *slice_buf, IDWTELEM *temp,
int width, int height, int stride_line,
int type, int decomposition_count, int y);
void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
int stride, int type, int decomposition_count);
void ff_dwt_init(DWTContext *c);
void ff_dwt_init_x86(DWTContext *c);
#endif /* AVCODEC_DWT_H */
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