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
|
#include "qtconverter.h"
/*
void post(char args[]){
printf("%s",args);
}
*/
int convertir_img(pathimage pathFitxer, tipus_format f, int W, int H, int posi){
/*
Quicktime per les conversions
*/
/* RGB vectors */
unsigned char * qt_rows[3];
/* YUV vesctor frame */
unsigned char *qt_frame = NULL;
/* quicktime decoder */
quicktime_t *qt;
/* quicktime color model */
int qt_cmodel;
int nN = posi;
int x_vwidth = 0;
int x_vheight = 0;
/* convertir(entrada,FORMAT_MINIATURA, W_CELL, H_CELL, nN); */
qt = quicktime_open(pathFitxer, 1, 0);
if (!(qt)){
/* post("videogrid: error opening qt file"); */
return -1;
}
if (!quicktime_has_video(qt)) {
/* post("videogrid: no video stream"); */
quicktime_close(qt);
return -1;
}
else if (!quicktime_supported_video(qt,0)) {
/* post("videogrid: unsupported video codec\n"); */
quicktime_close(qt);
return -1;
}
else
{
qt_cmodel = BC_YUV420P;
x_vwidth = quicktime_video_width(qt,0);
x_vheight = quicktime_video_height(qt,0);
free(qt_frame);
qt_frame = (unsigned char*)malloc(x_vwidth*x_vheight*4);
int size = x_vwidth * x_vheight;
qt_rows[0] = &qt_frame[0];
qt_rows[2] = &qt_frame[size];
qt_rows[1] = &qt_frame[size + (size>>2)];
quicktime_set_cmodel(qt, qt_cmodel);
}
/* int length = quicktime_video_length(qt,0); */
/* int Vpos = quicktime_video_position(qt,0); */
lqt_decode_video(qt, qt_rows, 0);
switch(qt_cmodel){
case BC_YUV420P:
printf(" ");
/* post("videogrid: qt colormodel : BC_YUV420P"); */
/* per a fer la miniatura
cada k colomnes pillem una
cada l files pillem una */
int w = x_vwidth;
int h = x_vheight;
int k = (w/W);
int l = (h/H);
/*int cont=0;*/
char nNstr[BYTES_NUM_TEMP];
pathimage ig_path = PATH_TEMPORAL;
sprintf(nNstr, "%d", nN);
strcat(ig_path,nNstr);
strcat(ig_path,".");
strcat(ig_path,FORMAT_MINIATURA);
/* printf("Creacio de la imatge %s ...",ig_path); */
/* escriu el contingut de data a un arxiu. */
FILE *fp = fopen(ig_path, "w");
fprintf (fp, "P6\n%d %d\n255\n", W, H);
int i,j,y,u,v,r,g,b;
for (i=0;i<(l*H);i=i+l) {
for (j=0;j<(k*W);j=j+k) {
y=qt_rows[0][(w*i+j)];
u=qt_rows[1][(w/2)*(i/2)+(j/2)];
v=qt_rows[2][(w/2)*(i/2)+(j/2)];
r = CLAMP8(y + 1.402 *(v-128));
g = CLAMP8(y - 0.34414 *(u-128) - 0.71414 *(v-128));
b = CLAMP8(y + 1.772 *(u-128));
fprintf (fp, "%c%c%c", r,g,b);
}
}
/* escriu el contingut de data a un arxiu.*/
fclose (fp);
}
return 0;
}
/*
cc -fPIC -c -O -Wall -Wmissing-prototypes -o qtconverter.o -c qtconverter.c
cc -o qtconverter qtconverter.o -lc -lm -lquicktime `Wand-config --ldflags --libs`
./qtconverter
*/
/*
int main(void){
pathimage imatge = "/usr/lib/pd/extra/videogrid/videos/dscn0243.mov";
tipus_format fo = "ppm";
int flauta;
flauta = convertir(imatge,fo,60,40,2);
printf("\n%d FET\n", flauta);
return(0);
}
*/
|
