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sixel: initial support

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This implements basic parsing of sixel data. Lots of limitations and
temporary solutions as this is still work-in-progress:

* Maximum image size hardcoded to 800x800
* No HLS color format support
* Image is always rendered at 0x0 in the terminal
This commit is contained in:
Daniel Eklöf 2020-02-21 21:53:23 +01:00
parent e8197d22f7
commit 9e3bfb1eab
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GPG key ID: 5BBD4992C116573F
6 changed files with 350 additions and 3 deletions
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21
render.c
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@ -816,6 +816,27 @@ grid_render(struct terminal *term)
cols_updated * term->cell_width, term->cell_height);
}
if (term->sixel.pix != NULL) {
pixman_image_composite(
PIXMAN_OP_SRC,
term->sixel.pix,
NULL,
pix,
0, 0,
0, 0,
0, 0,
term->sixel.max_col,
term->sixel.row * 6);
wl_surface_damage_buffer(
term->window->surface,
0, 0, term->sixel.max_col, term->sixel.row * 6);
pixman_image_unref(term->sixel.pix);
free(term->sixel.image);
term->sixel.pix = NULL;
term->sixel.image = NULL;
}
if (term->flash.active) {
/* Note: alpha is pre-computed in each color component */
/* TODO: dim while searching */