binkdsp.c
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1 /*
2  * Bink DSP routines
3  * Copyright (c) 2009 Kostya Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
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
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * Bink DSP routines
25  */
26 
27 #include "dsputil.h"
28 #include "binkdsp.h"
29 
30 #define A1 2896 /* (1/sqrt(2))<<12 */
31 #define A2 2217
32 #define A3 3784
33 #define A4 -5352
34 
35 #define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\
36  const int a0 = (src)[s0] + (src)[s4]; \
37  const int a1 = (src)[s0] - (src)[s4]; \
38  const int a2 = (src)[s2] + (src)[s6]; \
39  const int a3 = (A1*((src)[s2] - (src)[s6])) >> 11; \
40  const int a4 = (src)[s5] + (src)[s3]; \
41  const int a5 = (src)[s5] - (src)[s3]; \
42  const int a6 = (src)[s1] + (src)[s7]; \
43  const int a7 = (src)[s1] - (src)[s7]; \
44  const int b0 = a4 + a6; \
45  const int b1 = (A3*(a5 + a7)) >> 11; \
46  const int b2 = ((A4*a5) >> 11) - b0 + b1; \
47  const int b3 = (A1*(a6 - a4) >> 11) - b2; \
48  const int b4 = ((A2*a7) >> 11) + b3 - b1; \
49  (dest)[d0] = munge(a0+a2 +b0); \
50  (dest)[d1] = munge(a1+a3-a2+b2); \
51  (dest)[d2] = munge(a1-a3+a2+b3); \
52  (dest)[d3] = munge(a0-a2 -b4); \
53  (dest)[d4] = munge(a0-a2 +b4); \
54  (dest)[d5] = munge(a1-a3+a2-b3); \
55  (dest)[d6] = munge(a1+a3-a2-b2); \
56  (dest)[d7] = munge(a0+a2 -b0); \
57 }
58 /* end IDCT_TRANSFORM macro */
59 
60 #define MUNGE_NONE(x) (x)
61 #define IDCT_COL(dest,src) IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src)
62 
63 #define MUNGE_ROW(x) (((x) + 0x7F)>>8)
64 #define IDCT_ROW(dest,src) IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)
65 
66 static inline void bink_idct_col(int *dest, const int32_t *src)
67 {
68  if ((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])==0) {
69  dest[0] =
70  dest[8] =
71  dest[16] =
72  dest[24] =
73  dest[32] =
74  dest[40] =
75  dest[48] =
76  dest[56] = src[0];
77  } else {
78  IDCT_COL(dest, src);
79  }
80 }
81 
82 static void bink_idct_c(int32_t *block)
83 {
84  int i;
85  int temp[64];
86 
87  for (i = 0; i < 8; i++)
88  bink_idct_col(&temp[i], &block[i]);
89  for (i = 0; i < 8; i++) {
90  IDCT_ROW( (&block[8*i]), (&temp[8*i]) );
91  }
92 }
93 
94 static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
95 {
96  int i, j;
97 
98  bink_idct_c(block);
99  for (i = 0; i < 8; i++, dest += linesize, block += 8)
100  for (j = 0; j < 8; j++)
101  dest[j] += block[j];
102 }
103 
104 static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
105 {
106  int i;
107  int temp[64];
108  for (i = 0; i < 8; i++)
109  bink_idct_col(&temp[i], &block[i]);
110  for (i = 0; i < 8; i++) {
111  IDCT_ROW( (&dest[i*linesize]), (&temp[8*i]) );
112  }
113 }
114 
115 static void scale_block_c(const uint8_t src[64]/*align 8*/, uint8_t *dst/*align 8*/, int linesize)
116 {
117  int i, j;
118  uint16_t *dst1 = (uint16_t *) dst;
119  uint16_t *dst2 = (uint16_t *)(dst + linesize);
120 
121  for (j = 0; j < 8; j++) {
122  for (i = 0; i < 8; i++) {
123  dst1[i] = dst2[i] = src[i] * 0x0101;
124  }
125  src += 8;
126  dst1 += linesize;
127  dst2 += linesize;
128  }
129 }
130 
132 {
136 }
static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
Definition: binkdsp.c:94
else temp
Definition: vf_mcdeint.c:148
void(* scale_block)(const uint8_t src[64], uint8_t *dst, int linesize)
Definition: binkdsp.h:35
static void scale_block_c(const uint8_t src[64], uint8_t *dst, int linesize)
Definition: binkdsp.c:115
void(* idct_put)(uint8_t *dest, int line_size, int32_t *block)
Definition: binkdsp.h:33
uint8_t
static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
Definition: binkdsp.c:104
Bink DSP routines.
#define IDCT_COL(dest, src)
Definition: binkdsp.c:61
static void bink_idct_col(int *dest, const int32_t *src)
Definition: binkdsp.c:66
static void bink_idct_c(int32_t *block)
Definition: binkdsp.c:82
void(* idct_add)(uint8_t *dest, int line_size, int32_t *block)
Definition: binkdsp.h:34
int32_t
dest
Definition: start.py:60
AVS_Value src
Definition: avisynth_c.h:523
synthesis window for stochastic i
void ff_binkdsp_init(BinkDSPContext *c)
Definition: binkdsp.c:131
static double c[64]
DSP utils.
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
#define IDCT_ROW(dest, src)
Definition: binkdsp.c:64