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/*

 * Copyright (C) 2004-2010 Michael Niedermayer 

 *

 * 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_SNOW_DWT_H

#define AVCODEC_SNOW_DWT_H

#include 

typedef int DWTELEM;

typedef short IDWTELEM;

#define MAX_DECOMPOSITIONS 8

typedef struct DWTCompose {

    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 SnowDWTContext;

typedef struct SnowDWTContext {

    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);

} SnowDWTContext;

#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(SnowDWTContext *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(SnowDWTContext *c);

void ff_dwt_init_x86(SnowDWTContext *c);

#endif /* AVCODEC_DWT_H */