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change default GIF frame delay from 1s to 0.1s

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This is the delay if the GCB is missing.

See https://github.com/libvips/libvips/issues/2582
This commit is contained in:
John Cupitt 2021-12-18 18:08:30 +00:00
parent 65d84d1cbe
commit 9420911ba8
3 changed files with 13 additions and 1 deletions
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1
ChangeLog
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@ -3,6 +3,7 @@
- win: don't set create time on inappropriate file descriptors [lovell]
- fall back to magicksave for gif if cgif is not present [erik-frontify]
- fix a crash with 0 length vectors
- change default frame delay for GIFs from 1s to 0.1s
21/11/21 started 8.12.1
- fix insert [chregu]

11
libvips/foreign/libnsgif/default-frame-delay.patch Normal file
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@ -0,0 +1,11 @@
--- libnsgif.orig.c 2021-12-18 17:58:43.829719505 +0000
+++ libnsgif.c 2021-12-18 17:58:47.773783438 +0000
@@ -1003,7 +1003,7 @@
frame->frame_pointer = gif->buffer_position;
frame->redraw_required = false;
frame->disposal_method = 0;
- frame->frame_delay = 100;
+ frame->frame_delay = 10;
frame->display = false;
frame->virgin = true;
}

2
libvips/foreign/libnsgif/libnsgif.c
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@ -295,7 +295,7 @@ static gif_result gif_initialise_frame(gif_animation *gif)
gif->frames[frame].virgin = true;
gif->frames[frame].disposal_method = 0;
gif->frames[frame].transparency = false;
gif->frames[frame].frame_delay = 100;
gif->frames[frame].frame_delay = 10;
gif->frames[frame].redraw_required = false;
/* Invalidate any previous decoding we have of this frame */