Move ff_spatial_dwt() prototype to snow.h
[libav.git] / libavcodec / snow.h
CommitLineData
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1/*
2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
059715a4 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
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22#ifndef AVCODEC_SNOW_H
23#define AVCODEC_SNOW_H
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24
25#include "dsputil.h"
26
27#define MID_STATE 128
28
29#define MAX_DECOMPOSITIONS 8
30#define MAX_PLANES 4
31#define QSHIFT 5
32#define QROOT (1<<QSHIFT)
33#define LOSSLESS_QLOG -128
d593e329 34#define FRAC_BITS 4
8c36eaaa 35#define MAX_REF_FRAMES 8
059715a4 36
561a18d3 37#define LOG2_OBMC_MAX 8
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38#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
39
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40#define DWT_97 0
41#define DWT_53 1
d4b287ed 42
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43/** Used to minimize the amount of memory used in order to optimize cache performance. **/
44struct slice_buffer_s {
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45 IDWTELEM * * line; ///< For use by idwt and predict_slices.
46 IDWTELEM * * data_stack; ///< Used for internal purposes.
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47 int data_stack_top;
48 int line_count;
49 int line_width;
50 int data_count;
d593e329 51 IDWTELEM * base_buffer; ///< Buffer that this structure is caching.
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52};
53
54#define liftS lift
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55#if 1
56#define W_AM 3
57#define W_AO 0
58#define W_AS 1
59
60#undef liftS
61#define W_BM 1
62#define W_BO 8
63#define W_BS 4
64
65#define W_CM 1
66#define W_CO 0
67#define W_CS 0
68
69#define W_DM 3
70#define W_DO 4
71#define W_DS 3
72#elif 0
73#define W_AM 55
74#define W_AO 16
75#define W_AS 5
76
77#define W_BM 3
78#define W_BO 32
79#define W_BS 6
80
81#define W_CM 127
82#define W_CO 64
83#define W_CS 7
84
85#define W_DM 7
86#define W_DO 8
87#define W_DS 4
88#elif 0
89#define W_AM 97
90#define W_AO 32
91#define W_AS 6
92
93#define W_BM 63
94#define W_BO 512
95#define W_BS 10
96
97#define W_CM 13
98#define W_CO 8
99#define W_CS 4
100
101#define W_DM 15
102#define W_DO 16
103#define W_DS 5
104
105#else
106
107#define W_AM 203
108#define W_AO 64
109#define W_AS 7
110
111#define W_BM 217
112#define W_BO 2048
113#define W_BS 12
114
115#define W_CM 113
116#define W_CO 64
117#define W_CS 7
118
119#define W_DM 227
120#define W_DO 128
121#define W_DS 9
122#endif
123
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124void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
125void ff_snow_horizontal_compose97i(IDWTELEM *b, int width);
126void 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);
059715a4 127
b250f9c6 128#if CONFIG_SNOW_ENCODER
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129int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
130int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
696e1bb3 131#else
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132static int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0); return 0;}
133static int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0); return 0;}
696e1bb3 134#endif
22b48b85 135
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136void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type, int decomposition_count);
137
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138/* C bits used by mmx/sse2/altivec */
139
d593e329 140static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
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141 (*i) = (width) - 2;
142
143 if (width & 1){
144 low[(*i)+1] = low[((*i)+1)>>1];
145 (*i)--;
146 }
147}
148
d593e329 149static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
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150 for (; (*i)>=0; (*i)-=2){
151 low[(*i)+1] = high[(*i)>>1];
152 low[*i] = low[(*i)>>1];
153 }
154}
155
d593e329 156static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
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157 for(; i<w; i++){
158 dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
159 }
160
161 if((width^lift_high)&1){
162 dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
163 }
164}
165
d593e329 166static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){
22b48b85 167 for(; i<w; i++){
ce611a27 168 dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
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169 }
170
171 if(width&1){
ce611a27 172 dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
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173 }
174}
175
98790382 176#endif /* AVCODEC_SNOW_H */