int main()
{
int abc = 100;
/*定义一个函数指针，指向一个函数。函数名本质上是一个指针常量*/
funcType hello = func;
int dd = (*hello)(abc);
printf("value of variable dd is %d\n",dd);
abc = func_test(func , abc);
printf("%d\n",abc);
return 0;
}
bool ptr_var_test(){
return func_test();
}
int main()
{
func_test();
multi_thread_test();
return 0;
}
int main (int argc, char * argv[])
{
/* global variables */
program_name = argv[0];
debug_mode = 0;
error_file = stderr;
/* parsing arguments */
const char * input = NULL;
const char * output = NULL;
int opt = 0;
int sub3d = 0;
long fontsize = -1;
char * font = NULL;
long long color_primary = -1;
long long color_2nd = -1;
long long color_outline = -1;
long long color_back = -1;
int border_style = -1;
int outline = -1;
int shadow = -1;
int align = -1;
long margin_l = LONG_MIN;
long margin_r = LONG_MIN;
long margin_v = LONG_MIN;
long screen_x = -1;
long screen_y = -1;
char * ptr;
long znsub_srt2ass_flag = 0;
int align_adjust = -1;
const char * opts_short = "ho:c:";
const struct option opts_long [] = {
{ "help", 0, NULL, 'h' },
{ "output", 1, NULL, 'o' },
{ "debug", 0, NULL, 1024 },
{ "font", 1, NULL, 1030 },
{ "fontsize", 1, NULL, 1031 },
{ "screen", 1, NULL, 1032 },
{ "color", 1, NULL, 'c' },
{ "color-primary", 1, NULL, 1041 },
{ "color-2nd", 1, NULL, 1042 },
{ "color-outline", 1, NULL, 1043 },
{ "color-back", 1, NULL, 1044 },
{ "color-force", 0, NULL, 1045 },
{ "border-shadow", 0, &border_style, 1},
{ "border-box", 0, &border_style, 3},
{ "outline", 1, NULL, 1051 },
{ "shadow", 1, NULL, 1052 },
{ "align-left", 0, &align, 1 },
{ "align-center", 0, &align, 2 },
{ "align-right", 0, &align, 3 },
{ "align-bottom", 0, &align_adjust, 0},
{ "align-middle", 0, &align_adjust, 3},
{ "align-top", 0, &align_adjust, 6},
{ "margin-left", 1, NULL, 1061 },
{ "margin-right", 1, NULL, 1062 },
{ "margin-vertical", 1, NULL, 1063 },
{ "3dsbs", 0, &sub3d, ZNSUB_ASS3D_SBS },
{ "3dtb", 0, &sub3d, ZNSUB_ASS3D_TB },
{ "no3d", 0, &sub3d, ZNSUB_ASS3D_NO3D },
{ NULL, 0, NULL, 0 }
};
do
{
opt = getopt_long (argc, argv, opts_short, opts_long, NULL);
switch (opt)
{
case 'h':
print_help (stdout, 0);
break;
case 'o':
output = optarg;
break;
case 1024:
debug_mode = 1;
func_test ();
break;
/* font options */
case 1030:
zn_strset (&font, optarg);
break;
case 1031:
fontsize = strtol (optarg, NULL, 10);
break;
case 1032:
screen_x = strtol (optarg, &ptr, 10);
if (ptr[0] != '\0')
{
ptr = &ptr[1];
screen_y = strtol (ptr, NULL, 10);
}
else
screen_x = -1;
break;
/* color options */
case 'c':
color_2nd = strtoll (optarg, NULL, 0);
color_primary = color_2nd;
break;
case 1041:
color_primary = strtoll (optarg, NULL, 0);
break;
case 1042:
color_2nd = strtoll (optarg, NULL, 0);
break;
case 1043:
color_outline = strtoll (optarg, NULL, 0);
break;
case 1044:
color_back = strtoll (optarg, NULL, 0);
break;
case 1045:
znsub_srt2ass_flag |= ZNSUB_SRT_ASS_NOCOLOR;
break;
/* border styles */
/* old codes
case 1050:
border_style = (int)strtol (optarg, NULL, 0);
break;
*/
case 1051:
outline = (int) strtol (optarg, NULL, 0);
break;
case 1052:
shadow = (int) strtol (optarg, NULL, 0);
break;
/* alignment */
case 1061:
margin_l = strtol (optarg, NULL, 0);
break;
case 1062:
margin_r = strtol (optarg, NULL, 0);
break;
case 1063:
margin_v = strtol (optarg, NULL, 0);
break;
/* default */
case '?':
print_help (stdout, 0);
break;
case 0:
default:
break;
}
} while (opt != -1);
/* validating arguments */
if (output == NULL)
print_help (stdout, 0);
if (argc - optind > 1)
{
fprintf (error_file, "Too much arguments.\n");
exit (CODE_INVALID_ARGS);
}
else if (argc - optind < 1)
{
fprintf (error_file, "No input file.\n");
exit (CODE_INVALID_ARGS);
}
/* input */
input = argv[optind];
if (input == NULL)
{
fprintf (error_file, "Invalid input file.\n");
exit (CODE_INVALID_ARGS);
}
/* open input stream */
ZnFile * data = znfile_open (input);
if (data == NULL)
{
fprintf (error_file, "Cannot open input file.\n");
exit (CODE_INPUT_ERROR);
}
/* this part check the input format and use the
* proper parser to parse it */
/* parse input */
ZnsubASS * inp_ass = NULL;
ZnsubSRT * inp_srt = NULL;
int inp_format = 0;
inp_format = format_test (input);
if (inp_format == FORMAT_ASS)
{
inp_ass = znsub_ass_parse (data);
inp_format = FORMAT_ASS;
if (sub3d == ZNSUB_ASS3D_NO3D)
{
znsub_ass3d_discard (inp_ass, 0);
}
if (inp_ass == NULL)
{
fprintf (error_file, "Parsing ASS subtitle failed.\n");
exit (CODE_ASS_PARSE_ERROR);
}
}
else if (inp_format == FORMAT_SRT)
{
inp_srt = znsub_srt_parse (data);
inp_format = FORMAT_SRT;
if (inp_srt == NULL)
{
fprintf (error_file, "Parsing SRT subtitle failed.\n");
exit (CODE_SRT_PARSE_ERROR);
}
}
else
{
znfile_close (data);
fprintf (error_file, "Unable to determine file format.\n");
exit (CODE_INPFORMAT_ERROR);
}
znfile_close (data);
/* output format decision */
const char * ext = strrchr (output, '.');
if (strncmp (ext, ".srt", 4) == 0)
{
/* SRT FORMAT */
ZnsubSRT * out;
if (inp_format == FORMAT_ASS)
out = znsub_ass2srt (inp_ass, znsub_srt2ass_flag);
else if (inp_format == FORMAT_SRT)
out = inp_srt;
else
{
fprintf (stderr, "Error identifying input format.\n");
exit (CODE_INPFORMAT_ERROR);
}
FILE * file;
#ifdef WIN32
fopen_s (&file, output, "w");
#else
file = fopen(output, "w");
#endif // WIN32
if (file == NULL)
{
fprintf (stderr, "Error opening output file.\n");
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
exit (CODE_OUTPUT_ERROR);
}
znsub_srt_tofile (out, file);
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
if (inp_format != FORMAT_SRT)
znsub_srt_free (out);
inp_ass = NULL;
inp_srt = NULL;
}
else {
/* ASS FORMAT */
/* convert to ASS */
ZnsubASS * out = NULL;
if (inp_format == FORMAT_ASS)
out = inp_ass;
else if (inp_format == FORMAT_SRT)
out = znsub_srt2ass (inp_srt, znsub_srt2ass_flag);
else
{
fprintf (stderr, "Error identifying input format.\n");
exit (CODE_INPFORMAT_ERROR);
}
if (out == NULL)
{
fprintf (error_file, "Converting SRT to ASS failed.\n");
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
exit (CODE_FUNCTION_ERROR);
}
/* Customization */
if (screen_x >= 0 && screen_y >= 0)
{ /* set play resolution */
out->play_resx = screen_x;
out->play_resy = screen_y;
}
/* fonts */
ZnsubASSStyle * style = out->first_style;
if (fontsize > 0)
style->font_size = fontsize;
zn_strset (&style->font_name, font);
/* colors */
if (color_primary >= 0)
{
znsub_ass_style_color_setll (style->primary_colour,
color_primary);
}
if (color_2nd >= 0)
{
znsub_ass_style_color_setll (style->secondary_colour,
color_2nd);
}
if (color_outline >= 0)
{
znsub_ass_style_color_setll (style->outline_colour,
color_outline);
}
if (color_back >= 0)
{
znsub_ass_style_color_setll (style->back_colour,
color_back);
}
/* border -
* style: 1 for drop shadow + outline
* style: 2 for black box
* outline and shadow is limited to 0-4 according to
* specification*/
style->border_style = (border_style == 1 || border_style == 3 ?
border_style : style->border_style);
style->outline = (outline >= 0 && outline <= 4 ?
outline : style->outline);
style->shadow = (shadow >= 0 && shadow <= 4 ?
shadow : style->shadow);
/* align
* align 1 for left, 2 for center, 3 for right
* align_adjust +0 for bottom, +3 for middle, +6 for top */
align = (align != -1 ? align : 2); /* default - center*/
align += (align_adjust != -1 ? align_adjust : 0);
style->alignment = (align > 0 ? align : style->alignment);
/* margin: is set? new value else default */
style->margin_l = (margin_l != LONG_MIN ? margin_l :
style->margin_l);
style->margin_r = (margin_r != LONG_MIN ? margin_r :
style->margin_r);
style->margin_v = (margin_v != LONG_MIN ? margin_v :
style->margin_v);
/* convert to 3d */
if (sub3d == ZNSUB_ASS3D_SBS || sub3d == ZNSUB_ASS3D_TB)
znsub_ass3d_convert (out, sub3d, 0);
/* output to file */
FILE * file;
#ifdef WIN32
//errno_t err =
fopen_s(&file, output, "w");
#else
file = fopen(output, "w");
#endif // WIN32
if (file == NULL)
{
fprintf (stderr, "Error opening output file.\n");
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
exit(CODE_OUTPUT_ERROR);
}
znsub_ass_tofile (out, file);
/* free data */
fclose (file);
if (inp_format != FORMAT_ASS)
znsub_ass_free (out);
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
inp_ass = NULL;
inp_srt = NULL;
}
/* input free */
if (font != NULL)
free (font);
if (inp_ass != NULL)
znsub_ass_free (inp_ass);
if (inp_srt != NULL)
znsub_srt_free (inp_srt);
}
