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Try to use the dummy capture handler, still not working

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This commit is contained in:
Nathan Sobo 2022-08-29 19:08:07 -06:00 committed by Antonio Scandurra
parent 99cb66dfb0
commit 82ec2dc7ca
5 changed files with 48 additions and 15 deletions
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3
crates/capture/build.rs
View file

@ -20,8 +20,10 @@ fn main() {
let bindings = bindgen::Builder::default()
.header("src/bindings.h")
.clang_arg(format!("-isysroot{}", sdk_path))
.clang_arg("-xobjective-c")
.allowlist_function("CMTimeMake")
.allowlist_type("CMSampleBufferRef")
.allowlist_type("SCStreamOutputType")
.allowlist_var("_dispatch_main_q")
.allowlist_function("dispatch_async_f")
.allowlist_function("dispatch_queue_create")
@ -35,6 +37,7 @@ fn main() {
.write_to_file(out_path.join("bindings.rs"))
.expect("couldn't write dispatch bindings");
println!("cargo:rerun-if-changed=src/dummy.m");
cc::Build::new()
.file("src/dummy.m")
.flag("-mmacosx-version-min=12.3")

1
crates/capture/src/bindings.h
View file

@ -1,2 +1,3 @@
#import <CoreMedia/CMSampleBuffer.h>
#import <ScreenCaptureKit/SCStream.h>
#import <dispatch/dispatch.h>

4
crates/capture/src/bindings.rs
View file

@ -1,5 +1,7 @@
use objc::*;
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
pub fn dispatch_get_main_queue() -> dispatch_queue_t {
unsafe { &_dispatch_main_q as *const _ as dispatch_queue_t }
unsafe { std::mem::transmute(&_dispatch_main_q) }
}

16
crates/capture/src/dummy.m
View file

@ -1,12 +1,22 @@
#import <ScreenCaptureKit/ScreenCaptureKit.h>
@interface MyClass : NSObject <SCStreamOutput>
@interface MyClass : NSObject <SCStreamOutput, SCStreamDelegate>
@end
@implementation MyClass
- (void)stream:(SCStream *)stream
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
ofType:(SCStreamOutputType)type {
ofType:(SCStreamOutputType)type {
printf("dummy capture handler called");
}
@end
- (void)stream:(SCStream *)stream didStopWithError:(NSError *)error {
printf("dummy did stop with error called");
}
int main() {
[[MyClass alloc] init];
}
@end

39
crates/capture/src/main.rs
View file

@ -1,6 +1,6 @@
mod bindings;
use std::{slice, str};
use std::{slice, str, ptr::{self}};
use block::ConcreteBlock;
use cocoa::{
@ -12,7 +12,7 @@ use log::LevelFilter;
use objc::{class, msg_send, sel, sel_impl, declare::ClassDecl, runtime::{Protocol, Object, Sel}};
use simplelog::SimpleLogger;
use crate::bindings::dispatch_get_main_queue;
use crate::bindings::{dispatch_get_main_queue, dispatch_queue_create, NSObject, CMSampleBufferRef};
#[allow(non_upper_case_globals)]
const NSUTF8StringEncoding: NSUInteger = 4;
@ -52,18 +52,27 @@ fn main() {
let display_id: u32 = msg_send![display, displayID];
println!("display id {:?}", display_id);
let mut decl = ClassDecl::new("CaptureOutput", class!(NSObject)).unwrap();
decl.add_protocol(Protocol::get("SCStreamOutput").unwrap());
decl.add_method(sel!(stream:didOutputSampleBuffer:ofType:), sample_output as extern "C" fn(&Object, Sel, id, id, NSInteger));
let capture_output_class = decl.register();
// let mut decl = ClassDecl::new("CaptureOutput", class!(NSObject)).unwrap();
// decl.add_protocol(Protocol::get("SCStreamOutput").unwrap());
// decl.add_protocol(Protocol::get("SCStreamDelegate").unwrap());
// decl.add_method(sel!(stream:didOutputSampleBuffer:ofType:), sample_output as extern "C" fn(&Object, Sel, id, id, NSInteger));
// decl.add_method(sel!(stream:didStopWithError:), did_stop_with_error as extern "C" fn(&Object, Sel, id, id));
// let capture_output_class = decl.register();
let output: id = msg_send![capture_output_class, alloc];
// let output: id = msg_send![capture_output_class, alloc];
// let output: id = msg_send![output, init];
let output: id = msg_send![class!(MyClass), alloc];
let output: id = msg_send![output, init];
// Do we conform to the protocol?
let conforms: bool = msg_send![output, conformsToProtocol: Protocol::get("SCStreamOutput").unwrap()];
dbg!(conforms);
assert!(conforms, "expect CaptureOutput instance to conform to SCStreamOutput protocol");
// Confirm we can send the protocol message to the object
let _: () = msg_send![output, stream:NSObject(ptr::null_mut()) didOutputSampleBuffer:NSObject(ptr::null_mut()) ofType:0];
let excluded_windows: id = msg_send![class!(NSArray), array];
let filter: id = msg_send![class!(SCContentFilter), alloc];
let filter: id = msg_send![filter, initWithDisplay: display excludingWindows: excluded_windows];
@ -76,11 +85,15 @@ fn main() {
let _: () = msg_send![config, setQueueDepth: 5];
let stream: id = msg_send![class!(SCStream), alloc];
let stream: id = msg_send![stream, initWithFilter: filter configuration: config delegate: nil];
let stream: id = msg_send![stream, initWithFilter: filter configuration: config delegate: output];
let error: id = nil;
// let queue = dispatch_queue_create(ptr::null(), ptr::null_mut());
let queue = dispatch_queue_create(ptr::null(), NSObject(ptr::null_mut()));
let _: () = msg_send![stream, addStreamOutput: output type: 0 sampleHandlerQueue: dispatch_get_main_queue() error: &error];
let _: () = msg_send![stream,
addStreamOutput: output type: bindings::SCStreamOutputType_SCStreamOutputTypeScreen
sampleHandlerQueue: queue
error: &error
];
let start_capture_completion = ConcreteBlock::new(move |error: id| {
if !error.is_null() {
@ -130,8 +143,12 @@ pub unsafe fn string_from_objc(string: id) -> String {
.to_string()
}
extern "C" fn did_stop_with_error(this: &Object, _: Sel, stream: id, error: id) {
println!("did_stop_with_error");
}
extern "C" fn sample_output(this: &Object, _: Sel, stream: id, buffer: id, kind: NSInteger) {
println!("sample_output");
println!("sample output");
}
fn quit(_: &Quit, cx: &mut gpui::MutableAppContext) {