Automatically detect Rez flags; Add test prints

Makefile.plugins.mk

@@ -91,6 +91,35 @@ AU_LINK_FLAGS = \
 #	 -I$(DPF_PATH)/distrho/src/CoreAudio106/AudioUnits/AUPublic/OtherBases
 #	 -framework CoreAudio \
 
+# ---------------------------------------------------------------------------------------------------------------------
+# Set flags for 'Rez', needed for AU
+
+ifneq ($(CROSS_COMPILING),true)
+
+# Use environment to find arch
+ifeq ($(shell echo ${CXXFLAGS} | grep -q -- -arch && echo true),true)
+
+ifeq ($(shell echo ${CXXFLAGS} | grep -q -- x86_64 && echo true),true)
+REZ_FLAGS += -arch x86_64 -d x86_64_YES
+endif
+
+ifeq ($(shell echo ${CXXFLAGS} | grep -q -- i386 && echo true),true)
+REZ_FLAGS += -arch i386 -d i386_YES
+endif
+
+else # No "-arch" in environment, automatically detect arch
+
+ifeq ($(shell gcc -dM -E - < /dev/null | grep -q -- __x86_64__ && echo true),true)
+REZ_FLAGS += -arch x86_64 -d x86_64_YES
+endif
+
+ifeq ($(shell gcc -dM -E - < /dev/null | grep -q -- __i386__ && echo true),true)
+REZ_FLAGS += -arch i386 -d i386_YES
+endif
+
+endif # CXXFLAGS
+endif # CROSS_COMPILING
+
 # ---------------------------------------------------------------------------------------------------------------------
 # Handle UI stuff, disable UI support automatically
 
@@ -316,7 +345,6 @@ $(BUILD_DIR)/step1.rsrc: $(DPF_PATH)/distrho/src/DistrhoPluginAU.r $(BUILD_DIR)/
 	Rez $< \
 		-d SystemSevenOrLater=1 \
 		-useDF -script Roman \
-		-d x86_64_YES -d i386_YES -arch x86_64 -arch i386 \
 		-i . \
 		-i $(BUILD_DIR) \
 		-i $(DPF_PATH)/distrho/src/CoreAudio106/AudioUnits/AUPublic \
@@ -326,6 +354,7 @@ $(BUILD_DIR)/step1.rsrc: $(DPF_PATH)/distrho/src/DistrhoPluginAU.r $(BUILD_DIR)/
 		-i $(DPF_PATH)/distrho/src/CoreAudio106/PublicUtility \
 		-I /Developer/SDKs/MacOSX10.6.sdk \
 		-I /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Versions/A/Headers \
+		$(REZ_FLAGS) \
 		-o $@
 
 $(BUILD_DIR)/DistrhoPluginInfo.r: $(OBJS_DSP) $(BUILD_DIR)/DistrhoPluginAUexport.cpp.o

distrho/src/DistrhoPluginAU.cpp

@@ -48,11 +48,14 @@ public:
     PluginAU(AudioUnit component)
         : AUEffectBase(component),
           fLastValuesInit(),
-          fPlugin(this, writeMidiCallback)
+          fPlugin(this, writeMidiCallback),
+          fNumChannels(0)
     {
         CreateElements();
 
-        maxch = GetNumberOfChannels();
+        // FIXME this does not seem right
+        fNumChannels = GetNumberOfChannels();
+        DISTRHO_SAFE_ASSERT(fNumChannels == DISTRHO_PLUGIN_NUM_INPUTS);
 
         AUElement* const globals = Globals();
         DISTRHO_SAFE_ASSERT_RETURN(globals != nullptr,);
@@ -206,16 +209,15 @@ public:
                                 AudioBufferList &outBuffer,
                                 UInt32 inFramesToProcess) override
     {
-        UInt32 i;
-        float *srcBuffer[maxch];
-        float *destBuffer[maxch];
+        float* srcBuffer[fNumChannels];
+        float* destBuffer[fNumChannels];
 
-        for (i = 0; i < maxch; i++) {
+        for (uint32_t i = 0; i < fNumChannels; ++i) {
             srcBuffer[i] = (Float32 *)inBuffer.mBuffers[i].mData;
             destBuffer[i] = (Float32 *)outBuffer.mBuffers[i].mData;
         }
 
-        for (i = 0; i < fPlugin.getParameterCount(); i++) {
+        for (uint32_t i = 0; i < fPlugin.getParameterCount(); ++i) {
             SetParameter(i, GetParameter(i));
         }
 
@@ -231,7 +233,7 @@ public:
 private:
     LastValuesInit fLastValuesInit;
     PluginExporter fPlugin;
-    UInt32 maxch;
+    uint32_t fNumChannels;
 
     DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PluginAU)
 };

examples/Gain/DistrhoPluginInfo.h

@@ -26,4 +26,7 @@
 #define DISTRHO_PLUGIN_NUM_INPUTS   1
 #define DISTRHO_PLUGIN_NUM_OUTPUTS  1
 
+#define DISTRHO_PLUGIN_AU_SUBTYPE 'gain'
+#define DISTRHO_PLUGIN_AU_MANUF   'dpf '
+
 #endif // DISTRHO_PLUGIN_INFO_H_INCLUDED

examples/Gain/GainExamplePlugin.cpp

@@ -117,6 +117,8 @@ protected:
         parameter.ranges.def = 1.0f;
         parameter.ranges.min = 0.0f;
         parameter.ranges.max = 2.0f;
+
+        d_stdout("initParameter %u", index);
     }
 
    /* --------------------------------------------------------------------------------------------------------
@@ -128,6 +130,7 @@ protected:
     */
     float getParameterValue(uint32_t index) const override
     {
+        d_stdout("getParameterValue %u %f", index, fGain);
         if (index != 0)
             return 0.0f;
 
@@ -142,6 +145,7 @@ protected:
     */
     void setParameterValue(uint32_t index, float value) override
     {
+        d_stdout("setParameterValue %u %f", index, value);
         if (index != 0)
             return;