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-rw-r--r--media/libcubeb/src/cubeb-jni-instances.h34
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diff --git a/media/libcubeb/src/cubeb-jni-instances.h b/media/libcubeb/src/cubeb-jni-instances.h
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+#ifndef _CUBEB_JNI_INSTANCES_H_
+#define _CUBEB_JNI_INSTANCES_H_
+
+#include "GeneratedJNIWrappers.h"
+#include "mozilla/jni/Utils.h"
+
+/*
+ * The methods in this file offer a way to pass in the required
+ * JNI instances in the cubeb library. By default they return NULL.
+ * In this case part of the cubeb API that depends on JNI
+ * will return CUBEB_ERROR_NOT_SUPPORTED. Currently only one
+ * method depends on that:
+ *
+ * cubeb_stream_get_position()
+ *
+ * Users that want to use that cubeb API method must "override"
+ * the methods bellow to return a valid instance of JavaVM
+ * and application's Context object.
+ * */
+
+JNIEnv *
+cubeb_get_jni_env_for_thread()
+{
+ return mozilla::jni::GetEnvForThread();
+}
+
+jobject
+cubeb_jni_get_context_instance()
+{
+ auto context = mozilla::java::GeckoAppShell::GetApplicationContext();
+ return context.Forget();
+}
+
+#endif //_CUBEB_JNI_INSTANCES_H_