int main(void)
{
AVBPrint b;
char buf[256];
struct tm testtime = { .tm_year = 100, .tm_mon = 11, .tm_mday = 20 };
av_bprint_init(&b, 0, -1);
bprint_pascal(&b, 5);
printf("Short text in unlimited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
printf("%s\n", b.str);
av_bprint_finalize(&b, NULL);
av_bprint_init(&b, 0, -1);
bprint_pascal(&b, 25);
printf("Long text in unlimited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
av_bprint_finalize(&b, NULL);
av_bprint_init(&b, 0, 2048);
bprint_pascal(&b, 25);
printf("Long text in limited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
av_bprint_finalize(&b, NULL);
av_bprint_init(&b, 0, 1);
bprint_pascal(&b, 5);
printf("Short text in automatic buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
av_bprint_init(&b, 0, 1);
bprint_pascal(&b, 25);
printf("Long text in automatic buffer: %u/%u\n", (unsigned)strlen(b.str)/8*8, b.len);
/* Note that the size of the automatic buffer is arch-dependent. */
av_bprint_init(&b, 0, 0);
bprint_pascal(&b, 25);
printf("Long text count only buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
av_bprint_init_for_buffer(&b, buf, sizeof(buf));
bprint_pascal(&b, 25);
printf("Long text count only buffer: %u/%u\n", (unsigned)strlen(buf), b.len);
av_bprint_init(&b, 0, -1);
av_bprint_strftime(&b, "%Y-%m-%d", &testtime);
printf("strftime full: %u/%u \"%s\"\n", (unsigned)strlen(buf), b.len, b.str);
av_bprint_finalize(&b, NULL);
av_bprint_init(&b, 0, 8);
av_bprint_strftime(&b, "%Y-%m-%d", &testtime);
printf("strftime truncated: %u/%u \"%s\"\n", (unsigned)strlen(buf), b.len, b.str);
return 0;
}
static int func_pts(AVFilterContext *ctx, AVBPrint *bp,
char *fct, unsigned argc, char **argv, int tag)
{
DrawTextContext *s = ctx->priv;
const char *fmt;
double pts = s->var_values[VAR_T];
int ret;
fmt = argc >= 1 ? argv[0] : "flt";
if (argc >= 2) {
int64_t delta;
if ((ret = av_parse_time(&delta, argv[1], 1)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid delta '%s'\n", argv[1]);
return ret;
}
pts += (double)delta / AV_TIME_BASE;
}
if (!strcmp(fmt, "flt")) {
av_bprintf(bp, "%.6f", pts);
} else if (!strcmp(fmt, "hms")) {
if (isnan(pts)) {
av_bprintf(bp, " ??:??:??.???");
} else {
int64_t ms = llrint(pts * 1000);
char sign = ' ';
if (ms < 0) {
sign = '-';
ms = -ms;
}
av_bprintf(bp, "%c%02d:%02d:%02d.%03d", sign,
(int)(ms / (60 * 60 * 1000)),
(int)(ms / (60 * 1000)) % 60,
(int)(ms / 1000) % 60,
(int)(ms % 1000));
}
} else if (!strcmp(fmt, "localtime") ||
!strcmp(fmt, "gmtime")) {
struct tm tm;
time_t ms = (time_t)pts;
const char *timefmt = argc >= 3 ? argv[2] : "%Y-%m-%d %H:%M:%S";
if (!strcmp(fmt, "localtime"))
localtime_r(&ms, &tm);
else
gmtime_r(&ms, &tm);
av_bprint_strftime(bp, timefmt, &tm);
} else {
av_log(ctx, AV_LOG_ERROR, "Invalid format '%s'\n", fmt);
return AVERROR(EINVAL);
}
return 0;
}
static int func_strftime(AVFilterContext *ctx, AVBPrint *bp,
char *fct, unsigned argc, char **argv, int tag)
{
const char *fmt = argc ? argv[0] : "%Y-%m-%d %H:%M:%S";
time_t now;
struct tm tm;
time(&now);
if (tag == 'L')
localtime_r(&now, &tm);
else
tm = *gmtime_r(&now, &tm);
av_bprint_strftime(bp, fmt, &tm);
return 0;
}
