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#include "subtitler.h"
extern int execute(char *);
char subtitles_dir[] = "";
char *change_picture_geometry(\
char *data, int xsize, int ysize, double *new_xsize, double *new_ysize,\
int keep_aspect,\
double zrotation,\
double xshear, double yshear)
{
int a, x, y;
char temp[1024];
char *ptr;
/*
returns new data adjusted for geometry, calls Imagemagick package mogrify.
*/
if(debug_flag)
{
tc_log_msg(MOD_NAME, "change_picture_geometry(): data=%lu xsize=%d ysize=%d\n\
new_xsize=%.2f new_ysize=%.2f keep_aspect=%d\n\
zrotation=%.2f xshear=%.2f yshear=%.2f\n",\
(unsigned long)data, xsize, ysize,\
*new_xsize, *new_ysize, keep_aspect,\
zrotation,\
xshear, yshear);
}
/* write data as a temp .ppm file */
tc_snprintf(temp, sizeof(temp), "%s/%s/temp.ppm", home_dir, subtitles_dir);
if(! yuv_to_ppm(data, xsize, ysize, temp) )
{
tc_log_msg(MOD_NAME, "subtitler(): change_picture_geometry(): yuv_to_ppm() error return\n");
return 0;
}
/*
NOTE to programmers: it seems mogrify (and possibly the other ImageMagic
programs) gets confused if you attempt ~/.subtitles/temp.ppm
It then thinks .subtitles is a picture type and reports:
panteltje:/video/test# mogrify -geometry 352x288 /root/.subtitles/temp.ppm
mogrify: no encode delegate for this image format (SUBTITLES/MAGICRMGWIV).
So, I am using home_dir now, although that is not a good way of doing this,
but /temp needs special write permissions....
*/
/* if '!' in mogrify, aspect is overruled */
if(keep_aspect) a = ' ';
else a = '!';
/* change geometry temp file, this overwrites the temp file */
if(xshear == 0.0)
/* workaround bug in mogrify that causes exit if xshear is zero */
if(yshear != 0)
{
if(xshear == 0.0) xshear = 0.001;
}
if( (xshear != 0.0) || (yshear != 0.0) )
{
tc_snprintf(temp, sizeof(temp),\
"mogrify -geometry %dx%d%c -rotate %.2f -shear %.2fx%.2f %s/%s/temp.ppm",\
(int) *new_xsize, (int) *new_ysize, a,\
zrotation,\
xshear, yshear,\
home_dir, subtitles_dir);
}
else
{
tc_snprintf(temp, sizeof(temp),\
"mogrify -geometry %dx%d%c -rotate %.2f %s/%s/temp.ppm",\
(int) *new_xsize, (int) *new_ysize, a,\
zrotation,\
home_dir, subtitles_dir);
}
if(!execute(temp) ) return 0;
/* load temp .ppm file */
tc_snprintf(temp, sizeof(temp), "%s/%s/temp.ppm", home_dir, subtitles_dir);
ptr = ppm_to_yuv_in_char(temp, &x, &y);
*new_xsize = (double)x;
*new_ysize = (double)y;
#if 0
tc_log_msg(MOD_NAME, "WAS RELOAD x=%d y=%d *new_xsize=%.2f *new_ysize=%.2f\n",\
x, y, *new_xsize, *new_ysize);
#endif
return ptr;
} /* end function change_picture_geometry */
int execute(char *command)
{
FILE *pptr;
if(debug_flag)
{
tc_log_msg(MOD_NAME, "subtitler() execute(): arg command=%s\n", command);
}
pptr = popen(command, "r");
if(pptr <= 0)
{
tc_log_perror(MOD_NAME, "command");
return 0;
}
pclose(pptr);
return 1;
} /* end function execute */
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