Add support for iOS

.github/workflows/cmake.yml

@@ -59,6 +59,12 @@ jobs:
             cmake_generator: "Unix Makefiles"
             cmake_options:
               -DCMAKE_FRAMEWORK=ON
+          - name: iOS Clang cross compilation
+            os: macOS-latest
+            vcpkg_triplet: arm64-ios
+            cmake_generator: "Unix Makefiles"
+            cmake_options:
+              -DCMAKE_SYSTEM_NAME=iOS
 
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.name }}

CMakeLists.txt

@@ -296,14 +296,25 @@ elseif(UNIX)
 
   if(APPLE)
     set(CMAKE_MACOSX_RPATH 1)
-    target_sources(PortAudio PRIVATE
-      src/hostapi/coreaudio/pa_mac_core.c
-      src/hostapi/coreaudio/pa_mac_core_blocking.c
-      src/hostapi/coreaudio/pa_mac_core_blocking.h
-      src/hostapi/coreaudio/pa_mac_core_internal.h
-      src/hostapi/coreaudio/pa_mac_core_utilities.c
-      src/hostapi/coreaudio/pa_mac_core_utilities.h
-    )
+    if(IOS)
+      target_sources(PortAudio PRIVATE
+        src/hostapi/coreaudio_ios/pa_ios_core.c
+        src/hostapi/coreaudio_ios/pa_ios_core_blocking.c
+        src/hostapi/coreaudio_ios/pa_ios_core_blocking.h
+        src/hostapi/coreaudio_ios/pa_ios_core_internal.h
+        src/hostapi/coreaudio_ios/pa_ios_core_utilities.c
+        src/hostapi/coreaudio_ios/pa_ios_core_utilities.h
+      )
+    else()
+      target_sources(PortAudio PRIVATE
+        src/hostapi/coreaudio/pa_mac_core.c
+        src/hostapi/coreaudio/pa_mac_core_blocking.c
+        src/hostapi/coreaudio/pa_mac_core_blocking.h
+        src/hostapi/coreaudio/pa_mac_core_internal.h
+        src/hostapi/coreaudio/pa_mac_core_utilities.c
+        src/hostapi/coreaudio/pa_mac_core_utilities.h
+      )
+    endif()
     target_include_directories(PortAudio PRIVATE src/hostapi/coreaudio)
     set(PORTAUDIO_PUBLIC_HEADERS "${PORTAUDIO_PUBLIC_HEADERS}" include/pa_mac_core.h)
 
@@ -315,8 +326,12 @@ elseif(UNIX)
         -Wl,-framework,CoreFoundation
         -Wl,-framework,CoreServices
     )
-    target_compile_definitions(PortAudio PUBLIC PA_USE_COREAUDIO=1)
-    set(PKGCONFIG_CFLAGS "${PKGCONFIG_CFLAGS} -DPA_USE_COREAUDIO=1")
+    if(IOS)
+      target_compile_definitions(PortAudio PUBLIC PA_USE_COREAUDIO_IOS=1)
+    else()
+      target_compile_definitions(PortAudio PUBLIC PA_USE_COREAUDIO=1)
+      set(PKGCONFIG_CFLAGS "${PKGCONFIG_CFLAGS} -DPA_USE_COREAUDIO=1")
+    endif()
 
     # Use C11 so that we can make use of atomic library and avoid deprecation errors.
     set_property(TARGET PortAudio PROPERTY C_STANDARD 11)

include/pa_ios_core.h

@@ -0,0 +1,59 @@
+#ifndef PA_IOS_CORE_H
+#define PA_IOS_CORE_H
+/*
+ * PortAudio Portable Real-Time Audio Library
+ * iOS Core Audio specific extensions
+ * portaudio.h should be included before this file.
+ *
+ * Copyright (c) 2019 Hans Petter Selasky
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The text above constitutes the entire PortAudio license; however,
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
+ * license above.
+ */
+
+/** @file
+ *  @ingroup public_header
+ *  @brief iOS-specific PortAudio API extension header file.
+ */
+
+#include "portaudio.h"
+
+#include <AudioUnit/AudioUnit.h>
+#include <AudioToolbox/AudioToolbox.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif /** __cplusplus */
+
+#endif /* PA_IOS_CORE_H */

src/common/pa_hostapi.h

@@ -153,6 +153,13 @@ are defaulted to 1.
 #define PA_USE_COREAUDIO 1
 #endif
 
+#ifndef PA_USE_COREAUDIO_IOS
+#define PA_USE_COREAUDIO_IOS 0
+#elif (PA_USE_COREAUDIO_IOS != 0) && (PA_USE_COREAUDIO_IOS != 1)
+#undef PA_USE_COREAUDIO_IOS
+#define PA_USE_COREAUDIO_IOS 1
+#endif
+
 #ifndef PA_USE_ASIHPI
 #define PA_USE_ASIHPI 0
 #elif (PA_USE_ASIHPI != 0) && (PA_USE_ASIHPI != 1)