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sixel: initialize the color table to colors used by the VT340

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Daniel Eklöf 2024-03-15 15:19:43 +01:00
parent dd3bb13d97
commit 60fd4a262c
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GPG key ID: 5BBD4992C116573F
2 changed files with 40 additions and 3 deletions
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39
sixel.c
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@ -4,7 +4,7 @@
#include <limits.h>
#define LOG_MODULE "sixel"
#define LOG_ENABLE_DBG 0
#define LOG_ENABLE_DBG 1
#include "log.h"
#include "debug.h"
#include "grid.h"
@ -19,6 +19,29 @@ static size_t count;
static void sixel_put_generic(struct terminal *term, uint8_t c);
static void sixel_put_ar_11(struct terminal *term, uint8_t c);
/* VT330/VT340 Programmer Reference Manual - Table 2-3 VT340 Default Color Map */
static const uint32_t vt340_default_colors[16] = {
0xff000000,
0xff3333cc,
0xffcc2121,
0xff33cc33,
0xffcc33cc,
0xff33cccc,
0xffcccc33,
0xff878787,
0xff424242,
0xff545499,
0xff994242,
0xff549954,
0xff995499,
0xff549999,
0xff999954,
0xffcccccc,
};
_Static_assert(sizeof(vt340_default_colors) / sizeof(vt340_default_colors[0]) == 16,
"wrong number of elements");
void
sixel_fini(struct terminal *term)
{
@ -68,17 +91,27 @@ sixel_init(struct terminal *term, int p1, int p2, int p3)
term->sixel.image.width = 0;
term->sixel.image.height = 0;
/* TODO: default palette */
if (term->sixel.use_private_palette) {
xassert(term->sixel.private_palette == NULL);
term->sixel.private_palette = xcalloc(
term->sixel.palette_size, sizeof(term->sixel.private_palette[0]));
memcpy(
term->sixel.private_palette, vt340_default_colors,
min(sizeof(vt340_default_colors),
term->sixel.palette_size * sizeof(term->sixel.private_palette[0])));
term->sixel.palette = term->sixel.private_palette;
} else {
if (term->sixel.shared_palette == NULL) {
term->sixel.shared_palette = xcalloc(
term->sixel.palette_size, sizeof(term->sixel.shared_palette[0]));
memcpy(
term->sixel.shared_palette, vt340_default_colors,
min(sizeof(vt340_default_colors),
term->sixel.palette_size * sizeof(term->sixel.shared_palette[0])));
} else {
/* Shared palette - do *not* reset palette for new sixels */
}