FFmpeg
rematrix_template.c
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1 /*
2  * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at)
3  *
4  * This file is part of libswresample
5  *
6  * libswresample is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * libswresample is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with libswresample; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #if defined(TEMPLATE_REMATRIX_FLT)
22 # define R(x) x
23 # define SAMPLE float
24 # define COEFF float
25 # define INTER float
26 # define RENAME(x) x ## _float
27 #elif defined(TEMPLATE_REMATRIX_DBL)
28 # define R(x) x
29 # define SAMPLE double
30 # define COEFF double
31 # define INTER double
32 # define RENAME(x) x ## _double
33 #elif defined(TEMPLATE_REMATRIX_S16)
34 # define SAMPLE int16_t
35 # define COEFF int
36 # define INTER int
37 # ifdef TEMPLATE_CLIP
38 # define R(x) av_clip_int16(((x) + 16384)>>15)
39 # define RENAME(x) x ## _clip_s16
40 # else
41 # define R(x) (((x) + 16384)>>15)
42 # define RENAME(x) x ## _s16
43 # endif
44 #elif defined(TEMPLATE_REMATRIX_S32)
45 # define R(x) (((x) + 16384)>>15)
46 # define SAMPLE int32_t
47 # define COEFF int
48 # define INTER int64_t
49 # define RENAME(x) x ## _s32
50 #endif
51 
52 typedef void (RENAME(mix_any_func_type))(SAMPLE **out, const SAMPLE **in1, COEFF *coeffp, integer len);
53 
54 static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, COEFF *coeffp, integer index1, integer index2, integer len){
55  int i;
56  INTER coeff1 = coeffp[index1];
57  INTER coeff2 = coeffp[index2];
58 
59  for(i=0; i<len; i++)
60  out[i] = R(coeff1*in1[i] + coeff2*in2[i]);
61 }
62 
63 static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, COEFF *coeffp, integer index, integer len){
64  int i;
65  INTER coeff = coeffp[index];
66  for(i=0; i<len; i++)
67  out[i] = R(coeff*in[i]);
68 }
69 
70 static void RENAME(mix6to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, integer len){
71  int i;
72 
73  for(i=0; i<len; i++) {
74  INTER t = in[2][i]*(INTER)coeffp[0*6+2] + in[3][i]*(INTER)coeffp[0*6+3];
75  out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*6+0] + in[4][i]*(INTER)coeffp[0*6+4]);
76  out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*6+1] + in[5][i]*(INTER)coeffp[1*6+5]);
77  }
78 }
79 
80 static void RENAME(mix8to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, integer len){
81  int i;
82 
83  for(i=0; i<len; i++) {
84  INTER t = in[2][i]*(INTER)coeffp[0*8+2] + in[3][i]*(INTER)coeffp[0*8+3];
85  out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*8+0] + in[4][i]*(INTER)coeffp[0*8+4] + in[6][i]*(INTER)coeffp[0*8+6]);
86  out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*8+1] + in[5][i]*(INTER)coeffp[1*8+5] + in[7][i]*(INTER)coeffp[1*8+7]);
87  }
88 }
89 
90 static RENAME(mix_any_func_type) *RENAME(get_mix_any_func)(SwrContext *s){
91  if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && (s->in_ch_layout == AV_CH_LAYOUT_5POINT1 || s->in_ch_layout == AV_CH_LAYOUT_5POINT1_BACK)
92  && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
93  && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
94  )
95  return RENAME(mix6to2);
96 
97  if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && s->in_ch_layout == AV_CH_LAYOUT_7POINT1
98  && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
99  && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
100  && !s->matrix[0][7] && !s->matrix[1][6]
101  )
102  return RENAME(mix8to2);
103 
104  return NULL;
105 }
106 
107 #undef R
108 #undef SAMPLE
109 #undef COEFF
110 #undef INTER
111 #undef RENAME
mix_any_func_type
void() mix_any_func_type(uint8_t **out, const uint8_t **in1, void *coeffp, integer len)
Definition: swresample_internal.h:43
out
FILE * out
Definition: movenc.c:54
index
fg index
Definition: ffmpeg_filter.c:168
R
#define R
Definition: huffyuvdsp.h:34
integer
int integer
Definition: swresample_internal.h:37
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:91
s
#define s(width, name)
Definition: cbs_vp9.c:257
SwrContext
The libswresample context.
Definition: swresample_internal.h:95
NULL
#define NULL
Definition: coverity.c:32
AV_CH_LAYOUT_5POINT1
#define AV_CH_LAYOUT_5POINT1
Definition: channel_layout.h:101
copy
static void copy(const float *p1, float *p2, const int length)
Definition: vf_vaguedenoiser.c:191
AV_CH_LAYOUT_5POINT1_BACK
#define AV_CH_LAYOUT_5POINT1_BACK
Definition: channel_layout.h:103
i
int i
Definition: input.c:406
RENAME
#define RENAME(name)
Definition: ffv1.h:195
AV_CH_LAYOUT_7POINT1
#define AV_CH_LAYOUT_7POINT1
Definition: channel_layout.h:112
len
int len
Definition: vorbis_enc_data.h:426
SAMPLE
#define SAMPLE(tab, x, y)
Value of the luma sample at position (x, y) in the 2D array tab.
Definition: hevcdec.h:75
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:73