Compile fix (for GCC<3.3) when encoders are disabled
[libav.git] / libavcodec / snow.h
CommitLineData
059715a4
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1/*
2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#ifndef _SNOW_H
21#define _SNOW_H
22
23#include "dsputil.h"
24
25#define MID_STATE 128
26
27#define MAX_DECOMPOSITIONS 8
28#define MAX_PLANES 4
29#define QSHIFT 5
30#define QROOT (1<<QSHIFT)
31#define LOSSLESS_QLOG -128
32#define FRAC_BITS 8
8c36eaaa 33#define MAX_REF_FRAMES 8
059715a4 34
561a18d3 35#define LOG2_OBMC_MAX 8
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36#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
37
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38#define DWT_97 0
39#define DWT_53 1
40#define DWT_X 2
41
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42/** Used to minimize the amount of memory used in order to optimize cache performance. **/
43struct slice_buffer_s {
44 DWTELEM * * line; ///< For use by idwt and predict_slices.
45 DWTELEM * * data_stack; ///< Used for internal purposes.
46 int data_stack_top;
47 int line_count;
48 int line_width;
49 int data_count;
50 DWTELEM * base_buffer; ///< Buffer that this structure is caching.
51};
52
53#define liftS lift
54#define lift5 lift
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
124extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width);
125extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width);
126extern void ff_snow_inner_add_yblock(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);
127
696e1bb3 128#ifdef 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);
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131#else
132static int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);}
133static int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);}
134#endif
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135
136/* C bits used by mmx/sse2/altivec */
137
138static always_inline void snow_interleave_line_header(int * i, int width, DWTELEM * low, DWTELEM * high){
139 (*i) = (width) - 2;
140
141 if (width & 1){
142 low[(*i)+1] = low[((*i)+1)>>1];
143 (*i)--;
144 }
145}
146
147static always_inline void snow_interleave_line_footer(int * i, DWTELEM * low, DWTELEM * high){
148 for (; (*i)>=0; (*i)-=2){
149 low[(*i)+1] = high[(*i)>>1];
150 low[*i] = low[(*i)>>1];
151 }
152}
153
154static always_inline void snow_horizontal_compose_lift_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
155 for(; i<w; i++){
156 dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
157 }
158
159 if((width^lift_high)&1){
160 dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
161 }
162}
163
164static always_inline void snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w){
165 for(; i<w; i++){
166 dst[i] = src[i] - (((-(ref[i] + ref[(i+1)])+W_BO) - 4 * src[i]) >> W_BS);
167 }
168
169 if(width&1){
170 dst[w] = src[w] - (((-2 * ref[w] + W_BO) - 4 * src[w]) >> W_BS);
171 }
172}
173
059715a4 174#endif