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[host] lgmp: account for frame header capacity

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This commit is contained in:
Geoffrey McRae
2026-08-24 13:01:37 +10:00
parent f664be88bc
commit 9bbccfdcb9
3 changed files with 43 additions and 8 deletions
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15
host/platform/Windows/capture/DXGI/src/dxgi.c
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@@ -1526,12 +1526,21 @@ static CaptureResult dxgi_getFrame(
}
else
{
if (!this->pitch || !this->dataHeight ||
(size_t)this->dataHeight > maxFrameSize / this->pitch ||
(size_t)this->dataHeight * this->pitch > UINT_LEAST32_MAX)
{
result = CAPTURE_RESULT_ERROR;
goto cleanup;
}
const size_t frameSize = (size_t)this->pitch * this->dataHeight;
if (tex->damageRectsCount == 0 ||
damage->count < 0 ||
damage->count + tex->damageRectsCount > KVMFR_MAX_DAMAGE_RECTS)
{
// damage all
framebuffer_write(frame, tex->map, this->pitch * this->dataHeight);
framebuffer_write(frame, tex->map, frameSize);
}
else
{
@@ -1556,7 +1565,7 @@ static CaptureResult dxgi_getFrame(
this->bpp, frame, this->pitch, this->dataHeight,
tex->map, this->pitch))
framebuffer_write(frame, tex->map,
this->pitch * this->dataHeight);
frameSize);
}
else
{
@@ -1564,7 +1573,7 @@ static CaptureResult dxgi_getFrame(
this->bpp, frame, this->pitch, this->dataHeight,
tex->map, this->pitch))
framebuffer_write(frame, tex->map,
this->pitch * this->dataHeight);
frameSize);
}
}
}