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Reduce frequency of key frames slightly

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This commit is contained in:
Kovid Goyal 2021-02-04 17:08:06 +05:30
parent a447ba7d76
commit 83b8c8ea12
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 13 additions and 1 deletions
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14
kitty/graphics.c
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@ -1001,6 +1001,18 @@ update_current_frame(GraphicsManager *self, Image *img, const CoalescedFrameData
img->current_frame_shown_at = monotonic(); img->current_frame_shown_at = monotonic();
} }
static bool
reference_chain_too_large(Image *img, const Frame *frame) {
size_t limit = 2 * img->width * img->height;
size_t drawn_area = frame->width * frame->height;
unsigned num = 1;
while (drawn_area < limit && num < 5) {
if (!frame->base_frame_id || !(frame = frame_for_id(img, frame->base_frame_id))) break;
drawn_area += frame->width * frame->height;
num++;
}
return num >= 5 || drawn_area >= limit;
}
static Image* static Image*
handle_animation_frame_load_command(GraphicsManager *self, GraphicsCommand *g, Image *img, const uint8_t *payload, bool *is_dirty) { handle_animation_frame_load_command(GraphicsManager *self, GraphicsCommand *g, Image *img, const uint8_t *payload, bool *is_dirty) {
@ -1060,7 +1072,7 @@ handle_animation_frame_load_command(GraphicsManager *self, GraphicsCommand *g, I
img->extra_framecnt--; img->extra_framecnt--;
ABRT("EINVAL", "No frame with number: %u found", g->_other_frame_number); ABRT("EINVAL", "No frame with number: %u found", g->_other_frame_number);
} }
if (other_frame->base_frame_id) { if (other_frame->base_frame_id && reference_chain_too_large(img, other_frame)) {
// since the frame this frame refers to refers to yet another frame, make // since the frame this frame refers to refers to yet another frame, make
// this a fully coalesced key frame, for performance // this a fully coalesced key frame, for performance
CoalescedFrameData cfd = get_coalesced_frame_data(self, img, other_frame); CoalescedFrameData cfd = get_coalesced_frame_data(self, img, other_frame);