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wayland: make HDR descriptions asynchronous

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Publish HDR metadata through a locked request snapshot and wait for
image-description readiness before using it. Commit encoding changes with
matching content, preserve the active description during same-format
metadata replacements, and handle creation failures without protocol
errors.
This commit is contained in:
Geoffrey McRae
2026-07-19 03:43:26 +10:00
parent fcd66a5172
commit 94a805ab4b
4 changed files with 210 additions and 77 deletions
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7
client/displayservers/Wayland/wayland.c
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@@ -108,6 +108,7 @@ static bool getCompositor(char * dst, size_t size)
static bool waylandInit(const LG_DSInitParams params)
{
memset(&wlWm, 0, sizeof(wlWm));
LG_LOCK_INIT(wlWm.pendingHDRLock);
wlWm.desktop = WL_Desktops[0];
wlWm.hdrWhiteLevels = (LG_DSHDRWhiteLevels)
{
@@ -211,6 +212,7 @@ static void waylandFree(void)
waylandRegistryFree();
waylandCursorFree();
wl_display_disconnect(wlWm.display);
LG_LOCK_FREE(wlWm.pendingHDRLock);
}
static bool waylandGetProp(LG_DSProperty prop, void * ret)
@@ -223,7 +225,10 @@ static bool waylandGetProp(LG_DSProperty prop, void * ret)
if (prop == LG_DS_NATIVE_HDR)
{
*(bool *)ret = wlWm.cmCanDoHDR;
const bool active = atomic_load(&wlWm.hdrActive);
const bool requested = atomic_load(&wlWm.hdrRequested);
*(bool *)ret = active && requested &&
atomic_load(&wlWm.hdrActivePQ) == atomic_load(&wlWm.hdrRequestedPQ);
return true;
}