coreaudio: fix build for older versions / against older sdks after co…

…mmit 45055c6
libsdl-org · Jul 18, 2020 · ba62b1c · ba62b1c
1 parent a2047dc
commit ba62b1c
Showing 1 changed file with 20 additions and 5 deletions.
diff --git a/src/audio/macosx/SDL_coreaudio.c b/src/audio/macosx/SDL_coreaudio.c
@@ -33,6 +33,21 @@
 #include "../SDL_sysaudio.h"
 #include "SDL_coreaudio.h"
 
+#if (MAC_OS_X_VERSION_MIN_REQUIRED < 1060) || \
+    (!defined(AUDIO_UNIT_VERSION) || ((AUDIO_UNIT_VERSION + 0) < 1060))
+typedef struct ComponentDescription	AudioComponentDesc_t;
+typedef Component			AudioComponent_t;
+#define AudioComponentInstanceNew_fn		OpenAComponent
+#define AudioComponentInstanceDispose_fn	CloseComponent
+#define AudioComponentFindNext_fn		FindNextComponent
+#else
+typedef AudioComponentDescription	AudioComponentDesc_t;
+typedef AudioComponent			AudioComponent_t;
+#define AudioComponentInstanceNew_fn		AudioComponentInstanceNew
+#define AudioComponentInstanceDispose_fn	AudioComponentInstanceDispose
+#define AudioComponentFindNext_fn		AudioComponentFindNext
+#endif
+
 
 /* Audio driver functions */
 
@@ -193,7 +208,7 @@ void Core_CloseAudio(_THIS)
         return;
     }
 
-    result = AudioComponentInstanceDispose(outputAudioUnit);
+    result = AudioComponentInstanceDispose_fn (outputAudioUnit);
     if (result != noErr) {
         SDL_SetError("Core_CloseAudio: CloseComponent");
         return;
@@ -212,8 +227,8 @@ void Core_CloseAudio(_THIS)
 int Core_OpenAudio(_THIS, SDL_AudioSpec *spec)
 {
     OSStatus result = noErr;
-    AudioComponent comp;
-    AudioComponentDescription desc;
+    AudioComponent_t comp;
+    AudioComponentDesc_t desc;
     struct AURenderCallbackStruct callback;
     AudioStreamBasicDescription requestedDesc;
 
@@ -241,14 +256,14 @@ int Core_OpenAudio(_THIS, SDL_AudioSpec *spec)
     desc.componentFlags = 0;
     desc.componentFlagsMask = 0;
 
-    comp = AudioComponentFindNext(NULL, &desc);
+    comp = AudioComponentFindNext_fn (NULL, &desc);
     if (comp == NULL) {
         SDL_SetError ("Failed to start CoreAudio: AudioComponentFindNext returned NULL");
         return -1;
     }
 
     /* Open & initialize the default output audio unit */
-    result = AudioComponentInstanceNew (comp, &outputAudioUnit);
+    result = AudioComponentInstanceNew_fn (comp, &outputAudioUnit);
     CHECK_RESULT("AudioComponentInstanceNew")
 
     result = AudioUnitInitialize (outputAudioUnit);