FFmpeg  3.4.9
binkdsp.c
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1 /*
2  * Bink DSP routines
3  * Copyright (c) 2009 Konstantin 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 "config.h"
28 #include "libavutil/attributes.h"
29 #include "binkdsp.h"
30 
31 #define A1 2896 /* (1/sqrt(2))<<12 */
32 #define A2 2217
33 #define A3 3784
34 #define A4 -5352
35 
36 #define MUL(X,Y) ((int)((unsigned)(X) * (Y)) >> 11)
37 
38 #define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\
39  const int a0 = (src)[s0] + (src)[s4]; \
40  const int a1 = (src)[s0] - (src)[s4]; \
41  const int a2 = (src)[s2] + (src)[s6]; \
42  const int a3 = MUL(A1, (src)[s2] - (src)[s6]); \
43  const int a4 = (src)[s5] + (src)[s3]; \
44  const int a5 = (src)[s5] - (src)[s3]; \
45  const int a6 = (src)[s1] + (src)[s7]; \
46  const int a7 = (src)[s1] - (src)[s7]; \
47  const int b0 = a4 + a6; \
48  const int b1 = MUL(A3, a5 + a7); \
49  const int b2 = MUL(A4, a5) - b0 + b1; \
50  const int b3 = MUL(A1, a6 - a4) - b2; \
51  const int b4 = MUL(A2, a7) + b3 - b1; \
52  (dest)[d0] = munge(a0+a2 +b0); \
53  (dest)[d1] = munge(a1+a3-a2+b2); \
54  (dest)[d2] = munge(a1-a3+a2+b3); \
55  (dest)[d3] = munge(a0-a2 -b4); \
56  (dest)[d4] = munge(a0-a2 +b4); \
57  (dest)[d5] = munge(a1-a3+a2-b3); \
58  (dest)[d6] = munge(a1+a3-a2-b2); \
59  (dest)[d7] = munge(a0+a2 -b0); \
60 }
61 /* end IDCT_TRANSFORM macro */
62 
63 #define MUNGE_NONE(x) (x)
64 #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)
65 
66 #define MUNGE_ROW(x) (((x) + 0x7F)>>8)
67 #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)
68 
69 static inline void bink_idct_col(int *dest, const int32_t *src)
70 {
71  if ((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])==0) {
72  dest[0] =
73  dest[8] =
74  dest[16] =
75  dest[24] =
76  dest[32] =
77  dest[40] =
78  dest[48] =
79  dest[56] = src[0];
80  } else {
81  IDCT_COL(dest, src);
82  }
83 }
84 
85 static void bink_idct_c(int32_t *block)
86 {
87  int i;
88  int temp[64];
89 
90  for (i = 0; i < 8; i++)
91  bink_idct_col(&temp[i], &block[i]);
92  for (i = 0; i < 8; i++) {
93  IDCT_ROW( (&block[8*i]), (&temp[8*i]) );
94  }
95 }
96 
97 static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
98 {
99  int i, j;
100 
101  bink_idct_c(block);
102  for (i = 0; i < 8; i++, dest += linesize, block += 8)
103  for (j = 0; j < 8; j++)
104  dest[j] += block[j];
105 }
106 
107 static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
108 {
109  int i;
110  int temp[64];
111  for (i = 0; i < 8; i++)
112  bink_idct_col(&temp[i], &block[i]);
113  for (i = 0; i < 8; i++) {
114  IDCT_ROW( (&dest[i*linesize]), (&temp[8*i]) );
115  }
116 }
117 
118 static void scale_block_c(const uint8_t src[64]/*align 8*/, uint8_t *dst/*align 8*/, int linesize)
119 {
120  int i, j;
121  uint16_t *dst1 = (uint16_t *) dst;
122  uint16_t *dst2 = (uint16_t *)(dst + linesize);
123 
124  for (j = 0; j < 8; j++) {
125  for (i = 0; i < 8; i++) {
126  dst1[i] = dst2[i] = src[i] * 0x0101;
127  }
128  src += 8;
129  dst1 += linesize;
130  dst2 += linesize;
131  }
132 }
133 
135  int line_size)
136 {
137  int i;
138 
139  for (i = 0; i < 8; i++) {
140  pixels[0] += block[0];
141  pixels[1] += block[1];
142  pixels[2] += block[2];
143  pixels[3] += block[3];
144  pixels[4] += block[4];
145  pixels[5] += block[5];
146  pixels[6] += block[6];
147  pixels[7] += block[7];
148  pixels += line_size;
149  block += 8;
150  }
151 }
152 
154 {
159 }
av_cold void ff_binkdsp_init(BinkDSPContext *c)
Definition: binkdsp.c:153
static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
Definition: binkdsp.c:97
else temp
Definition: vf_mcdeint.c:256
void(* scale_block)(const uint8_t src[64], uint8_t *dst, int linesize)
Definition: binkdsp.h:37
static void scale_block_c(const uint8_t src[64], uint8_t *dst, int linesize)
Definition: binkdsp.c:118
#define src
Definition: vp8dsp.c:254
Macro definitions for various function/variable attributes.
void(* idct_put)(uint8_t *dest, int line_size, int32_t *block)
Definition: binkdsp.h:35
static int16_t block[64]
Definition: dct.c:115
uint8_t
#define av_cold
Definition: attributes.h:82
static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
Definition: binkdsp.c:107
#define av_restrict
Definition: config.h:10
Bink DSP routines.
#define IDCT_COL(dest, src)
Definition: binkdsp.c:64
static void bink_idct_col(int *dest, const int32_t *src)
Definition: binkdsp.c:69
static void bink_idct_c(int32_t *block)
Definition: binkdsp.c:85
void(* idct_add)(uint8_t *dest, int line_size, int32_t *block)
Definition: binkdsp.h:36
int32_t
static void add_pixels8_c(uint8_t *av_restrict pixels, int16_t *block, int line_size)
Definition: binkdsp.c:134
void(* add_pixels8)(uint8_t *av_restrict pixels, int16_t *block, int line_size)
Definition: binkdsp.h:38
static double c[64]
int pixels
Definition: avisynth_c.h:429
#define IDCT_ROW(dest, src)
Definition: binkdsp.c:67