Merge pull request #25738 from lorentey/CoreMedia-shims-5.1

[5.1][Shims] Add CoreMedia overlay shims

Author: lorentey

stdlib/public/SwiftShims/CMakeLists.txt

@@ -20,6 +20,7 @@ set(sources
   UnicodeShims.h
   Visibility.h
 
+  CoreMediaOverlayShims.h
   DispatchOverlayShims.h
   NetworkOverlayShims.h
   OSOverlayShims.h

stdlib/public/SwiftShims/CoreMediaOverlayShims.h

@@ -0,0 +1,75 @@
+//===--- CoreMediaOverlayShims.h ---===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2019 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains replacements for the initializers of some CoreMedia
+// objects that return the created instance as an out parameter and thus
+// cannot be used in Swift as-is.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SWIFT_STDLIB_SHIMS_COREMEDIA_OVERLAY_H
+#define SWIFT_STDLIB_SHIMS_COREMEDIA_OVERLAY_H
+
+@import CoreMedia;
+@import CoreFoundation;
+
+#if __has_feature(nullability)
+#pragma clang assume_nonnull begin
+#endif
+
+// slurped from CoreAudio headers that are sometime private.
+typedef UInt32  AudioObjectID;
+typedef AudioObjectID   AudioDeviceID;
+
+// slurped from CoreMedia headers; see https://bugs.swift.org/browse/SR-2999
+typedef struct CM_BRIDGED_TYPE(id) OpaqueCMBlockBuffer *CMBlockBufferRef;
+typedef struct CM_BRIDGED_TYPE(id) opaqueCMBufferQueue *CMBufferQueueRef;
+typedef struct CM_BRIDGED_TYPE(id) OpaqueCMClock* CMClockRef;
+typedef const struct CM_BRIDGED_TYPE(id) opaqueCMFormatDescription *CMFormatDescriptionRef;
+typedef struct CM_BRIDGED_TYPE(id) opaqueCMSampleBuffer *CMSampleBufferRef;
+typedef struct CM_BRIDGED_TYPE(id) opaqueCMSimpleQueue *CMSimpleQueueRef;
+typedef struct CM_BRIDGED_TYPE(id) OpaqueCMTimebase* CMTimebaseRef;
+
+#define INIT_REFERENCING(Type, availability) \
+CM_INLINE CM_RETURNS_RETAINED_PARAMETER Type##Ref CM_NONNULL \
+  Type##Retain( \
+  Type##Ref CM_NONNULL object) \
+  CF_SWIFT_NAME(Type.init(referencing:)) \
+  CF_REFINED_FOR_SWIFT \
+  availability ;\
+CM_INLINE CM_RETURNS_RETAINED_PARAMETER Type##Ref CM_NONNULL \
+  Type##Retain( \
+  Type##Ref CM_NONNULL object) \
+{ \
+  return (Type##Ref)CFRetain(object);\
+}
+
+INIT_REFERENCING(CMClock, API_AVAILABLE(macosx(10.8)) API_UNAVAILABLE(ios, tvos, watchos))
+
+INIT_REFERENCING(CMBlockBuffer, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+INIT_REFERENCING(CMBufferQueue, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+INIT_REFERENCING(CMFormatDescription, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+INIT_REFERENCING(CMSampleBuffer, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+INIT_REFERENCING(CMSimpleQueue, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+INIT_REFERENCING(CMTimebase, API_AVAILABLE(macos(10.7), ios(4.0), tvos(9.0), watchos(6.0)))
+
+#if __has_feature(nullability)
+#pragma clang assume_nonnull end
+#endif
+
+
+#endif // SWIFT_STDLIB_SHIMS_COREMEDIA_OVERLAY_H

stdlib/public/SwiftShims/module.modulemap

@@ -75,3 +75,7 @@ module _SwiftNetworkOverlayShims {
 module _SwiftClockKitOverlayShims {
     header "ClockKitOverlayShims.h"
 }
+
+module _SwiftCoreMediaOverlayShims {
+  header "CoreMediaOverlayShims.h"
+}