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Retrieve IOSurface in Rust callback as opposed to doing so in delegate

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This commit is contained in:
Antonio Scandurra 2022-08-30 19:08:54 +02:00
parent c4110edb78
commit d30e360664
1 changed files with 21 additions and 25 deletions
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46
crates/capture/src/main.rs
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@ -63,7 +63,24 @@ fn main() {
let output: id = msg_send![capture_output_class, alloc];
let output: id = msg_send![output, init];
let callback = Box::new(|buffer: CMSampleBufferRef| {
dbg!("HEY!");
let buffer = CMSampleBuffer::wrap_under_get_rule(buffer);
let attachments = buffer.attachments();
let attachments = attachments.first().expect("no attachments for sample");
let string = bindings::SCStreamFrameInfoStatus.0 as CFStringRef;
let status = core_foundation::number::CFNumber::wrap_under_get_rule(
*attachments.get(string) as CFNumberRef,
)
.to_i64()
.expect("invalid frame info status");
if status != bindings::SCFrameStatus_SCFrameStatusComplete {
println!("received incomplete frame");
return;
}
let image_buffer = buffer.image_buffer();
dbg!(image_buffer.width(), image_buffer.height());
let io_surface = image_buffer.io_surface();
}) as Box<dyn FnMut(CMSampleBufferRef)>;
let callback = Box::into_raw(Box::new(callback));
(*output).set_ivar("callback", callback as *mut c_void);
@ -159,32 +176,11 @@ extern "C" fn sample_output(
buffer: id,
_kind: SCStreamOutputType,
) {
let buffer = unsafe { CMSampleBuffer::wrap_under_get_rule(buffer as CMSampleBufferRef) };
let callback = unsafe { *this.get_ivar::<*mut c_void>("callback") };
let callback = callback as *mut Box<dyn FnMut(CMSampleBufferRef)>;
let x = unsafe { callback.as_mut().unwrap() };
(*x)(buffer.as_concrete_TypeRef());
let attachments = buffer.attachments();
let attachments = attachments.first().expect("no attachments for sample");
unsafe {
let string = bindings::SCStreamFrameInfoStatus.0 as CFStringRef;
let status = core_foundation::number::CFNumber::wrap_under_get_rule(
*attachments.get(string) as CFNumberRef,
)
.to_i64()
.expect("invalid frame info status");
if status != bindings::SCFrameStatus_SCFrameStatusComplete {
println!("received incomplete frame");
return;
}
let callback = *this.get_ivar::<*mut c_void>("callback");
let callback = &mut *(callback as *mut Box<dyn FnMut(CMSampleBufferRef)>);
(*callback)(buffer as CMSampleBufferRef);
}
let image_buffer = buffer.image_buffer();
dbg!(image_buffer.width(), image_buffer.height());
let io_surface = image_buffer.io_surface();
}
fn quit(_: &Quit, cx: &mut gpui::MutableAppContext) {