1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <inttypes.h>
#include "mp_msg.h"
#include "cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
#include "libavcodec/avcodec.h"
#include "libavutil/eval.h"
struct vf_priv_s {
char eq[200];
int8_t *qp;
int8_t lut[257];
int qp_stride;
};
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
int h= (height+15)>>4;
int i;
vf->priv->qp_stride= (width+15)>>4;
vf->priv->qp= av_malloc(vf->priv->qp_stride*h*sizeof(int8_t));
for(i=-129; i<128; i++){
double const_values[]={
M_PI,
M_E,
i != -129,
i,
0
};
static const char *const_names[]={
"PI",
"E",
"known",
"qp",
NULL
};
double temp_val;
int res;
res= av_expr_parse_and_eval(&temp_val, vf->priv->eq, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, NULL);
if (res < 0){
ff_mp_msg(MSGT_VFILTER, MSGL_ERR, "qp: Error evaluating \"%s\" \n", vf->priv->eq);
return 0;
}
vf->priv->lut[i+129]= lrintf(temp_val);
}
return ff_vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static void get_image(struct vf_instance *vf, mp_image_t *mpi){
if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
// ok, we can do pp in-place (or pp disabled):
vf->dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags, mpi->w, mpi->h);
mpi->planes[0]=vf->dmpi->planes[0];
mpi->stride[0]=vf->dmpi->stride[0];
mpi->width=vf->dmpi->width;
if(mpi->flags&MP_IMGFLAG_PLANAR){
mpi->planes[1]=vf->dmpi->planes[1];
mpi->planes[2]=vf->dmpi->planes[2];
mpi->stride[1]=vf->dmpi->stride[1];
mpi->stride[2]=vf->dmpi->stride[2];
}
mpi->flags|=MP_IMGFLAG_DIRECT;
}
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
mp_image_t *dmpi;
int x,y;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
// no DR, so get a new image! hope we'll get DR buffer:
vf->dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
mpi->w,mpi->h);
}
dmpi= vf->dmpi;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
if(mpi->flags&MP_IMGFLAG_PLANAR){
memcpy_pic(dmpi->planes[1], mpi->planes[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[1], mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[2], mpi->stride[2]);
}
}
ff_vf_clone_mpi_attributes(dmpi, mpi);
dmpi->qscale = vf->priv->qp;
dmpi->qstride= vf->priv->qp_stride;
if(mpi->qscale){
for(y=0; y<((dmpi->h+15)>>4); y++){
for(x=0; x<vf->priv->qp_stride; x++){
dmpi->qscale[x + dmpi->qstride*y]=
vf->priv->lut[ 129 + ((int8_t)mpi->qscale[x + mpi->qstride*y]) ];
}
}
}else{
int qp= vf->priv->lut[0];
for(y=0; y<((dmpi->h+15)>>4); y++){
for(x=0; x<vf->priv->qp_stride; x++){
dmpi->qscale[x + dmpi->qstride*y]= qp;
}
}
}
return ff_vf_next_put_image(vf,dmpi, pts);
}
static void uninit(struct vf_instance *vf){
if(!vf->priv) return;
av_free(vf->priv->qp);
vf->priv->qp= NULL;
av_free(vf->priv);
vf->priv=NULL;
}
//===========================================================================//
static int vf_open(vf_instance_t *vf, char *args){
vf->config=config;
vf->put_image=put_image;
vf->get_image=get_image;
vf->uninit=uninit;
vf->priv=av_malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
// avcodec_init();
if (args) strncpy(vf->priv->eq, args, 199);
return 1;
}
const vf_info_t ff_vf_info_qp = {
"QP changer",
"qp",
"Michael Niedermayer",
"",
vf_open,
NULL
};
|
