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/*
* Kitty terminal support using existing PNG routines.
* This file is #included from term.h if either the gd or cairo
* libraries are present.
*/
#ifdef TERM_BODY
#ifndef KITTY_C
#define KITTY_C
/* Kitty graphics spec says this must be <= 4096 */
#define KITTY_BUFSIZ 4096
#define KITTY_FORMAT_RGB 24
#define KITTY_FORMAT_RGBA 32
#define KITTY_FORMAT_PNG 100
static unsigned char kitty_format;
static unsigned char *kitty_buf = NULL; /* Will be initialized to kitty_buf[KITTY_BUFSIZ] */
static unsigned char *kitty_writepos;
static TBOOLEAN kitty_init_sent;
static void
kitty_init(unsigned char format)
{
kitty_format = format;
if (!kitty_buf)
kitty_buf = gp_alloc(sizeof(unsigned char) * KITTY_BUFSIZ, "kitty buffer");
kitty_writepos = kitty_buf;
kitty_init_sent = FALSE;
}
static int
kitty_flush(TBOOLEAN more)
{
/* TODO: return EOF if any writes error */
if (!kitty_init_sent) {
fprintf(gpoutfile, "\033_Ga=T,f=%d,m=%d;", kitty_format, more);
kitty_init_sent = TRUE;
} else {
fprintf(gpoutfile, "\033_Gm=%d;", more);
}
fwrite(kitty_buf, sizeof(unsigned char), kitty_writepos - kitty_buf, gpoutfile);
fprintf(gpoutfile, "\033\\");
kitty_writepos = kitty_buf;
return 0;
}
static int
kitty_writechar(void *closure, unsigned char ch)
{
*(kitty_writepos++) = ch;
if (kitty_writepos - kitty_buf >= KITTY_BUFSIZ) {
return kitty_flush(TRUE);
}
return 0;
}
#endif /* KITTY_C */
#endif /* TERM_BODY */
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