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// Copyright 2018 GFX developers
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.
use super::*;
use std::ffi::CStr;
/// See <https://developer.apple.com/documentation/metal/mtlcapturescope>
pub enum MTLCaptureScope {}
foreign_obj_type! {
type CType = MTLCaptureScope;
pub struct CaptureScope;
}
impl CaptureScopeRef {
pub fn begin_scope(&self) {
unsafe { msg_send![self, beginScope] }
}
pub fn end_scope(&self) {
unsafe { msg_send![self, endScope] }
}
pub fn label(&self) -> &str {
unsafe {
let label = msg_send![self, label];
crate::nsstring_as_str(label)
}
}
}
/// See <https://developer.apple.com/documentation/metal/mtlcapturemanager>
pub enum MTLCaptureManager {}
foreign_obj_type! {
type CType = MTLCaptureManager;
pub struct CaptureManager;
}
impl CaptureManager {
pub fn shared<'a>() -> &'a CaptureManagerRef {
unsafe {
let class = class!(MTLCaptureManager);
msg_send![class, sharedCaptureManager]
}
}
}
impl CaptureManagerRef {
pub fn new_capture_scope_with_device(&self, device: &DeviceRef) -> CaptureScope {
unsafe { msg_send![self, newCaptureScopeWithDevice: device] }
}
pub fn new_capture_scope_with_command_queue(
&self,
command_queue: &CommandQueueRef,
) -> CaptureScope {
unsafe { msg_send![self, newCaptureScopeWithCommandQueue: command_queue] }
}
pub fn default_capture_scope(&self) -> Option<&CaptureScopeRef> {
unsafe { msg_send![self, defaultCaptureScope] }
}
pub fn set_default_capture_scope(&self, scope: &CaptureScopeRef) {
unsafe { msg_send![self, setDefaultCaptureScope: scope] }
}
/// Starts capturing with the capture session defined by a descriptor object.
///
/// This function will panic if Metal capture is not enabled. Capture can be enabled by
/// either:
/// 1. Running from Xcode
/// 2. Setting the environment variable `METAL_CAPTURE_ENABLED=1`
/// 3. Adding an info.plist file containing the `MetalCaptureEnabled` key set to `YES`
pub fn start_capture(&self, descriptor: &CaptureDescriptorRef) -> Result<(), String> {
unsafe {
Ok(try_objc! { err =>
msg_send![self, startCaptureWithDescriptor: descriptor
error: &mut err]
})
}
}
pub fn start_capture_with_device(&self, device: &DeviceRef) {
unsafe { msg_send![self, startCaptureWithDevice: device] }
}
pub fn start_capture_with_command_queue(&self, command_queue: &CommandQueueRef) {
unsafe { msg_send![self, startCaptureWithCommandQueue: command_queue] }
}
pub fn start_capture_with_scope(&self, scope: &CaptureScopeRef) {
unsafe { msg_send![self, startCaptureWithScope: scope] }
}
pub fn stop_capture(&self) {
unsafe { msg_send![self, stopCapture] }
}
pub fn is_capturing(&self) -> bool {
unsafe { msg_send![self, isCapturing] }
}
/// See <https://developer.apple.com/documentation/metal/mtlcapturemanager/3237260-supportsdestination?language=objc>
pub fn supports_destination(&self, destination: MTLCaptureDestination) -> bool {
unsafe { msg_send![self, supportsDestination: destination] }
}
}
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