Added custom recipes

recipes/libopus/__init__.py

@@ -0,0 +1,22 @@
+from pythonforandroid.recipe import Recipe
+from pythonforandroid.toolchain import current_directory, shprint
+import sh
+
+
+class OpusRecipe(Recipe):
+    version = '1.5.2'
+    url = "https://downloads.xiph.org/releases/opus/opus-{version}.tar.gz"
+    built_libraries = {'libopus.so': '.libs'}
+
+    def build_arch(self, arch):
+        with current_directory(self.get_build_dir(arch.arch)):
+            env = self.get_recipe_env(arch)
+            flags = [
+                '--host=' + arch.command_prefix,
+            ]
+            configure = sh.Command('./configure')
+            shprint(configure, *flags, _env=env)
+            shprint(sh.make, _env=env)
+
+
+recipe = OpusRecipe()