2 * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVCODEC_SNOW_DWT_H
22 #define AVCODEC_SNOW_DWT_H
28 typedef short IDWTELEM
;
30 #define MAX_DECOMPOSITIONS 8
32 typedef struct DWTCompose
{
40 /** Used to minimize the amount of memory used in order to
41 * optimize cache performance. **/
42 typedef struct slice_buffer_s
{
43 IDWTELEM
**line
; ///< For use by idwt and predict_slices.
44 IDWTELEM
**data_stack
; ///< Used for internal purposes.
49 IDWTELEM
*base_buffer
; ///< Buffer that this structure is caching.
52 struct SnowDWTContext
;
54 typedef struct SnowDWTContext
{
55 void (*vertical_compose97i
)(IDWTELEM
*b0
, IDWTELEM
*b1
, IDWTELEM
*b2
,
56 IDWTELEM
*b3
, IDWTELEM
*b4
, IDWTELEM
*b5
,
58 void (*horizontal_compose97i
)(IDWTELEM
*b
, IDWTELEM
*temp
, int width
);
59 void (*inner_add_yblock
)(const uint8_t *obmc
, const int obmc_stride
,
60 uint8_t **block
, int b_w
, int b_h
, int src_x
,
61 int src_y
, int src_stride
, slice_buffer
*sb
,
62 int add
, uint8_t *dst8
);
87 #define slice_buffer_get_line(slice_buf, line_num) \
88 ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \
89 : ff_slice_buffer_load_line((slice_buf), \
92 int ff_slice_buffer_init(slice_buffer
*buf
, int line_count
,
93 int max_allocated_lines
, int line_width
,
94 IDWTELEM
*base_buffer
);
95 void ff_slice_buffer_release(slice_buffer
*buf
, int line
);
96 void ff_slice_buffer_flush(slice_buffer
*buf
);
97 void ff_slice_buffer_destroy(slice_buffer
*buf
);
98 IDWTELEM
*ff_slice_buffer_load_line(slice_buffer
*buf
, int line
);
100 void ff_snow_vertical_compose97i(IDWTELEM
*b0
, IDWTELEM
*b1
, IDWTELEM
*b2
,
101 IDWTELEM
*b3
, IDWTELEM
*b4
, IDWTELEM
*b5
,
103 void ff_snow_horizontal_compose97i(IDWTELEM
*b
, IDWTELEM
*temp
, int width
);
104 void ff_snow_inner_add_yblock(const uint8_t *obmc
, const int obmc_stride
,
105 uint8_t **block
, int b_w
, int b_h
, int src_x
,
106 int src_y
, int src_stride
, slice_buffer
*sb
,
107 int add
, uint8_t *dst8
);
109 int ff_w53_32_c(struct MpegEncContext
*v
, uint8_t *pix1
, uint8_t *pix2
, ptrdiff_t line_size
, int h
);
110 int ff_w97_32_c(struct MpegEncContext
*v
, uint8_t *pix1
, uint8_t *pix2
, ptrdiff_t line_size
, int h
);
112 void ff_spatial_dwt(int *buffer
, int *temp
, int width
, int height
, int stride
,
113 int type
, int decomposition_count
);
115 void ff_spatial_idwt_buffered_init(DWTCompose
*cs
, slice_buffer
*sb
, int width
,
116 int height
, int stride_line
, int type
,
117 int decomposition_count
);
118 void ff_spatial_idwt_buffered_slice(SnowDWTContext
*dsp
, DWTCompose
*cs
,
119 slice_buffer
*slice_buf
, IDWTELEM
*temp
,
120 int width
, int height
, int stride_line
,
121 int type
, int decomposition_count
, int y
);
122 void ff_spatial_idwt(IDWTELEM
*buffer
, IDWTELEM
*temp
, int width
, int height
,
123 int stride
, int type
, int decomposition_count
);
125 void ff_dwt_init(SnowDWTContext
*c
);
126 void ff_dwt_init_x86(SnowDWTContext
*c
);
128 #endif /* AVCODEC_DWT_H */