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framebufferio: Check early if framebuffer is big enough

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This commit is contained in:
Jeff Epler 2020-08-06 14:28:22 -05:00
parent a33e48c065
commit 1ee2062c1b
1 changed files with 7 additions and 0 deletions
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7
shared-module/framebufferio/FramebufferDisplay.c
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@ -79,6 +79,13 @@ void common_hal_framebufferio_framebufferdisplay_construct(framebufferio_framebu
if (self->row_stride == 0) { if (self->row_stride == 0) {
self->row_stride = self->core.width * self->core.colorspace.depth/8; self->row_stride = self->core.width * self->core.colorspace.depth/8;
} }
self->framebuffer_protocol->get_bufinfo(self->framebuffer, &self->bufinfo);
size_t framebuffer_size = self->first_pixel_offset + self->row_stride * self->core.height;
if (self->bufinfo.len < framebuffer_size) {
mp_raise_IndexError_varg(translate("Framebuffer requires %d bytes"), framebuffer_size);
}
self->first_manual_refresh = !auto_refresh; self->first_manual_refresh = !auto_refresh;
self->native_frames_per_second = self->framebuffer_protocol->get_native_frames_per_second(self->framebuffer); self->native_frames_per_second = self->framebuffer_protocol->get_native_frames_per_second(self->framebuffer);