FFmpeg
dirac_dwt_init.c
Go to the documentation of this file.
1 /*
2  * x86 optimized discrete wavelet transform
3  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4  * Copyright (c) 2010 David Conrad
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "libavutil/x86/asm.h"
24 #include "libavutil/x86/cpu.h"
25 #include "libavcodec/dirac_dwt.h"
26 
27 #define COMPOSE_VERTICAL(ext, align) \
28 void ff_vertical_compose53iL0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int width); \
29 void ff_vertical_compose_dirac53iH0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int width); \
30 void ff_vertical_compose_dd137iL0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int16_t *b3, int16_t *b4, int width); \
31 void ff_vertical_compose_dd97iH0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int16_t *b3, int16_t *b4, int width); \
32 void ff_vertical_compose_haar##ext(int16_t *b0, int16_t *b1, int width); \
33 void ff_horizontal_compose_haar0i##ext(int16_t *b, int16_t *tmp, int w);\
34 void ff_horizontal_compose_haar1i##ext(int16_t *b, int16_t *tmp, int w);\
35 \
36 static void vertical_compose53iL0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, int width) \
37 { \
38  int i, width_align = width&~(align-1); \
39  int16_t *b0 = (int16_t *)_b0; \
40  int16_t *b1 = (int16_t *)_b1; \
41  int16_t *b2 = (int16_t *)_b2; \
42 \
43  for(i=width_align; i<width; i++) \
44  b1[i] = COMPOSE_53iL0(b0[i], b1[i], b2[i]); \
45 \
46  ff_vertical_compose53iL0##ext(b0, b1, b2, width_align); \
47 } \
48 \
49 static void vertical_compose_dirac53iH0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, int width) \
50 { \
51  int i, width_align = width&~(align-1); \
52  int16_t *b0 = (int16_t *)_b0; \
53  int16_t *b1 = (int16_t *)_b1; \
54  int16_t *b2 = (int16_t *)_b2; \
55 \
56  for(i=width_align; i<width; i++) \
57  b1[i] = COMPOSE_DIRAC53iH0(b0[i], b1[i], b2[i]); \
58 \
59  ff_vertical_compose_dirac53iH0##ext(b0, b1, b2, width_align); \
60 } \
61 \
62 static void vertical_compose_dd137iL0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, \
63  uint8_t *_b3, uint8_t *_b4, int width) \
64 { \
65  int i, width_align = width&~(align-1); \
66  int16_t *b0 = (int16_t *)_b0; \
67  int16_t *b1 = (int16_t *)_b1; \
68  int16_t *b2 = (int16_t *)_b2; \
69  int16_t *b3 = (int16_t *)_b3; \
70  int16_t *b4 = (int16_t *)_b4; \
71 \
72  for(i=width_align; i<width; i++) \
73  b2[i] = COMPOSE_DD137iL0(b0[i], b1[i], b2[i], b3[i], b4[i]); \
74 \
75  ff_vertical_compose_dd137iL0##ext(b0, b1, b2, b3, b4, width_align); \
76 } \
77 \
78 static void vertical_compose_dd97iH0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, \
79  uint8_t *_b3, uint8_t *_b4, int width) \
80 { \
81  int i, width_align = width&~(align-1); \
82  int16_t *b0 = (int16_t *)_b0; \
83  int16_t *b1 = (int16_t *)_b1; \
84  int16_t *b2 = (int16_t *)_b2; \
85  int16_t *b3 = (int16_t *)_b3; \
86  int16_t *b4 = (int16_t *)_b4; \
87 \
88  for(i=width_align; i<width; i++) \
89  b2[i] = COMPOSE_DD97iH0(b0[i], b1[i], b2[i], b3[i], b4[i]); \
90 \
91  ff_vertical_compose_dd97iH0##ext(b0, b1, b2, b3, b4, width_align); \
92 } \
93 static void vertical_compose_haar##ext(uint8_t *_b0, uint8_t *_b1, int width) \
94 { \
95  int i, width_align = width&~(align-1); \
96  int16_t *b0 = (int16_t *)_b0; \
97  int16_t *b1 = (int16_t *)_b1; \
98 \
99  for(i=width_align; i<width; i++) { \
100  b0[i] = COMPOSE_HAARiL0(b0[i], b1[i]); \
101  b1[i] = COMPOSE_HAARiH0(b1[i], b0[i]); \
102  } \
103 \
104  ff_vertical_compose_haar##ext(b0, b1, width_align); \
105 } \
106 static void horizontal_compose_haar0i##ext(uint8_t *_b, uint8_t *_tmp, int w)\
107 {\
108  int w2= w>>1;\
109  int x= w2 - (w2&(align-1));\
110  int16_t *b = (int16_t *)_b; \
111  int16_t *tmp = (int16_t *)_tmp; \
112 \
113  ff_horizontal_compose_haar0i##ext(b, tmp, w);\
114 \
115  for (; x < w2; x++) {\
116  b[2*x ] = tmp[x];\
117  b[2*x+1] = COMPOSE_HAARiH0(b[x+w2], tmp[x]);\
118  }\
119 }\
120 static void horizontal_compose_haar1i##ext(uint8_t *_b, uint8_t *_tmp, int w)\
121 {\
122  int w2= w>>1;\
123  int x= w2 - (w2&(align-1));\
124  int16_t *b = (int16_t *)_b; \
125  int16_t *tmp = (int16_t *)_tmp; \
126 \
127  ff_horizontal_compose_haar1i##ext(b, tmp, w);\
128 \
129  for (; x < w2; x++) {\
130  b[2*x ] = (tmp[x] + 1)>>1;\
131  b[2*x+1] = (COMPOSE_HAARiH0(b[x+w2], tmp[x]) + 1)>>1;\
132  }\
133 }\
134 \
135 
136 #if HAVE_X86ASM
137 COMPOSE_VERTICAL(_sse2, 8)
138 
139 
140 void ff_horizontal_compose_dd97i_ssse3(int16_t *_b, int16_t *_tmp, int w);
141 
142 static void horizontal_compose_dd97i_ssse3(uint8_t *_b, uint8_t *_tmp, int w)
143 {
144  int w2= w>>1;
145  int x= w2 - (w2&7);
146  int16_t *b = (int16_t *)_b;
147  int16_t *tmp = (int16_t *)_tmp;
148 
149  ff_horizontal_compose_dd97i_ssse3(b, tmp, w);
150 
151  for (; x < w2; x++) {
152  b[2*x ] = (tmp[x] + 1)>>1;
153  b[2*x+1] = (COMPOSE_DD97iH0(tmp[x-1], tmp[x], b[x+w2], tmp[x+1], tmp[x+2]) + 1)>>1;
154  }
155 }
156 #endif
157 
159 {
160 #if HAVE_X86ASM
161  int mm_flags = av_get_cpu_flags();
162 
163  if (!(mm_flags & AV_CPU_FLAG_SSE2))
164  return;
165 
166  switch (type) {
167  case DWT_DIRAC_DD9_7:
168  d->vertical_compose_l0.tap3 = vertical_compose53iL0_sse2;
169  d->vertical_compose_h0.tap5 = vertical_compose_dd97iH0_sse2;
170  break;
171  case DWT_DIRAC_LEGALL5_3:
172  d->vertical_compose_l0.tap3 = vertical_compose53iL0_sse2;
173  d->vertical_compose_h0.tap3 = vertical_compose_dirac53iH0_sse2;
174  break;
175  case DWT_DIRAC_DD13_7:
176  d->vertical_compose_l0.tap5 = vertical_compose_dd137iL0_sse2;
177  d->vertical_compose_h0.tap5 = vertical_compose_dd97iH0_sse2;
178  break;
179  case DWT_DIRAC_HAAR0:
180  d->vertical_compose = vertical_compose_haar_sse2;
181  d->horizontal_compose = horizontal_compose_haar0i_sse2;
182  break;
183  case DWT_DIRAC_HAAR1:
184  d->vertical_compose = vertical_compose_haar_sse2;
185  d->horizontal_compose = horizontal_compose_haar1i_sse2;
186  break;
187  }
188 
189  if (!(mm_flags & AV_CPU_FLAG_SSSE3))
190  return;
191 
192  switch (type) {
193  case DWT_DIRAC_DD9_7:
194  d->horizontal_compose = horizontal_compose_dd97i_ssse3;
195  break;
196  }
197 #endif // HAVE_X86ASM
198 }
cpu.h
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
w
uint8_t w
Definition: llviddspenc.c:38
b
#define b
Definition: input.c:41
dirac_dwt.h
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:103
AV_CPU_FLAG_SSSE3
#define AV_CPU_FLAG_SSSE3
Conroe SSSE3 functions.
Definition: cpu.h:41
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
DWT_DIRAC_HAAR1
@ DWT_DIRAC_HAAR1
Definition: dirac_dwt.h:84
DWT_DIRAC_HAAR0
@ DWT_DIRAC_HAAR0
Definition: dirac_dwt.h:83
dwt_type
dwt_type
Definition: dirac_dwt.h:77
DWT_DIRAC_DD13_7
@ DWT_DIRAC_DD13_7
Definition: dirac_dwt.h:82
AV_CPU_FLAG_SSE2
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:34
COMPOSE_DD97iH0
#define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)
Definition: dirac_dwt.h:104
COMPOSE_VERTICAL
#define COMPOSE_VERTICAL(ext, align)
Definition: dirac_dwt_init.c:27
asm.h
ff_spatial_idwt_init_x86
void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type)
Definition: dirac_dwt_init.c:158
DWTContext
Definition: dirac_dwt.h:54
d
d
Definition: ffmpeg_filter.c:368
DWT_DIRAC_LEGALL5_3
@ DWT_DIRAC_LEGALL5_3
Definition: dirac_dwt.h:81
DWT_DIRAC_DD9_7
@ DWT_DIRAC_DD9_7
Definition: dirac_dwt.h:80