Add PyAV recipe (#2750)

* pyav recipe

* flake8 fix

* Update pythonforandroid/recipes/av/__init__.py

Co-authored-by: Andre Miras <AndreMiras@users.noreply.github.com>

---------

Co-authored-by: Andre Miras <AndreMiras@users.noreply.github.com>

pythonforandroid/recipes/av/__init__.py

@@ -0,0 +1,25 @@
+from pythonforandroid.toolchain import Recipe
+from pythonforandroid.recipe import CythonRecipe
+
+
+class PyAVRecipe(CythonRecipe):
+
+    name = "av"
+    version = "10.0.0"
+    url = "https://github.com/PyAV-Org/PyAV/archive/v{version}.zip"
+
+    depends = ["python3", "cython", "ffmpeg", "av_codecs"]
+    opt_depends = ["openssl"]
+
+    def get_recipe_env(self, arch, with_flags_in_cc=True):
+        env = super().get_recipe_env(arch)
+
+        build_dir = Recipe.get_recipe("ffmpeg", self.ctx).get_build_dir(
+            arch.arch
+        )
+        self.setup_extra_args = ["--ffmpeg-dir={}".format(build_dir)]
+
+        return env
+
+
+recipe = PyAVRecipe()

pythonforandroid/recipes/av_codecs/__init__.py

@@ -0,0 +1,11 @@
+from pythonforandroid.toolchain import Recipe
+
+
+class PyAVCodecsRecipe(Recipe):
+    depends = ["libx264", "libshine", "libvpx"]
+
+    def build_arch(self, arch):
+        pass
+
+
+recipe = PyAVCodecsRecipe()