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Remove some code that will not be needed.

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This commit is contained in:
Nicholas Marriott
2026-10-14 15:12:45 +01:00
parent c642ad8804
commit 77449c0e5c
3 changed files with 15 additions and 61 deletions
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61
image-sixel.c
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@@ -55,7 +55,7 @@ struct sixel_image {
u_int x;
u_int y;
/* Terminal cell pixel dimensions used for scaling. */
/* Terminal cell pixel size used for decoding. */
u_int xpixel;
u_int ypixel;
@@ -65,12 +65,10 @@ struct sixel_image {
u_int used_colours;
/* SIXEL raster attributes. */
u_int set_ra;
u_int ra_x;
u_int ra_y;
/* DCS parameters. */
u_int p1;
/* DCS background parameter. */
u_int p2;
/* Current parser position and colour register. */
@@ -168,6 +166,8 @@ struct sixel_source {
u_int out_h;
};
static void sixel_free(struct sixel_image *);
/* Grow a SIXEL image to contain a line. */
static int
sixel_parse_expand_lines(struct sixel_image *si, u_int y)
@@ -452,8 +452,7 @@ sixel_parse_repeat(struct sixel_image *si, const char *cp, const char *end)
/* Parse SIXEL data into an indexed image. */
struct sixel_image *
sixel_parse(const char *buf, size_t len, u_int p1, u_int p2, u_int xpixel,
u_int ypixel)
sixel_parse(const char *buf, size_t len, u_int p2, u_int xpixel, u_int ypixel)
{
struct sixel_image *si;
const char *cp = buf, *end = buf + len;
@@ -467,7 +466,6 @@ sixel_parse(const char *buf, size_t len, u_int p1, u_int p2, u_int xpixel,
si = xcalloc(1, sizeof *si);
si->xpixel = xpixel;
si->ypixel = ypixel;
si->p1 = p1;
si->p2 = p2;
while (cp != end) {
@@ -517,7 +515,7 @@ bad:
}
/* Free a SIXEL image. */
void
static void
sixel_free(struct sixel_image *si)
{
u_int y;
@@ -541,33 +539,6 @@ sixel_size_in_cells(struct sixel_image *si, u_int *x, u_int *y)
image_size_in_cells(si->x, si->y, si->xpixel, si->ypixel, x, y);
}
/* Log a SIXEL image. */
void
sixel_log(struct sixel_image *si)
{
struct sixel_line *sl;
char s[SIXEL_WIDTH_LIMIT + 1];
u_int i, x, y, cx, cy;
sixel_size_in_cells(si, &cx, &cy);
log_debug("%s: image %ux%u (%ux%u)", __func__, si->x, si->y, cx, cy);
for (i = 0; i < si->ncolours; i++)
log_debug("%s: colour %u is %07x", __func__, i, si->colours[i]);
for (y = 0; y < si->y; y++) {
sl = &si->lines[y];
for (x = 0; x < si->x; x++) {
if (x >= sl->x)
s[x] = '_';
else if (sl->data[x] != 0)
s[x] = '0' + (sl->data[x] - 1) % 10;
else
s[x] = '.';
}
s[x] = '\0';
log_debug("%s: %4u: %s", __func__, y, s);
}
}
/* Convert one HLS component to RGB. */
static double
sixel_hue(double p, double q, double t)
@@ -620,7 +591,7 @@ sixel_colour_to_rgb(u_int c, u_char *r, u_char *g, u_char *b)
}
/* Convert a SIXEL image into the common RGBA format. */
struct image *
static struct image *
sixel_to_image(struct sixel_image *si)
{
struct image *im;
@@ -785,14 +756,11 @@ sixel_print(struct sixel_image *si, size_t *size)
len = 8192;
buf = xmalloc(len);
tmplen = xsnprintf(tmp, sizeof tmp, "\033P%u;%uq", si->p1, si->p2);
sixel_print_add(&buf, &len, &used, tmp, tmplen);
sixel_print_add(&buf, &len, &used, "\033P9;1q", 6);
if (si->set_ra) {
tmplen = xsnprintf(tmp, sizeof tmp, "\"1;1;%u;%u", si->ra_x,
si->ra_y);
sixel_print_add(&buf, &len, &used, tmp, tmplen);
}
tmplen = xsnprintf(tmp, sizeof tmp, "\"1;1;%u;%u", si->ra_x,
si->ra_y);
sixel_print_add(&buf, &len, &used, tmp, tmplen);
/* Track colour planes containing pixels in the current six-row band. */
planes = xcalloc(used_colours, sizeof *planes);
@@ -1221,11 +1189,6 @@ sixel_make_image(struct image *im, u_int cx, u_int cy, u_int csx, u_int csy,
/* Create the indexed image with a SIXEL RGB palette. */
si = xcalloc(1, sizeof *si);
si->xpixel = cw;
si->ypixel = ch;
si->p1 = 9;
si->p2 = 1;
si->set_ra = 1;
si->ra_x = sx;
si->ra_y = sy;
si->ncolours = si->used_colours = nc;
@@ -1273,7 +1236,7 @@ fail:
}
/* Encode part of an image as SIXEL for a terminal cell size. */
char *
static char *
sixel_from_image(struct image *im, u_int x, u_int y, u_int sx, u_int sy,
u_int cw, u_int ch, size_t *size)
{