ssr: Fix building with OSS materials

Change-Id: I466816af5e1258f61401edf3eaf37ed7a862292e

hal/audio_extn/Android.mk

@@ -166,6 +166,10 @@ LOCAL_CFLAGS += \
     -Wno-unused-function \
     -Wno-unused-variable
 
+ifeq ($(QCPATH),)
+  LOCAL_CFLAGS += -D_OSS
+endif
+
 LOCAL_SHARED_LIBRARIES := \
     libaudioutils \
     libcutils \

hal/audio_extn/ssr.c

@@ -36,7 +36,19 @@
 #include "audio_extn.h"
 #include "platform.h"
 #include "platform_api.h"
+#ifndef _OSS
 #include "surround_rec_interface.h"
+#else
+typedef struct {
+    const char *name;
+    char *(*get_param_fn)(void *h);
+} get_param_data_t;
+
+typedef struct {
+    const char *name;
+    void (*set_param_fn)(void *h, const char *val);
+} set_param_data_t;
+#endif
 
 #ifdef DYNAMIC_LOG_ENABLED
 #include <log_xml_parser.h>