Use opusfile instead of working directly with ogg and opus

lib/opusfile/CMakeLists.txt

@@ -0,0 +1,20 @@
+# Copyright 2023 jacqueline <me@jacqueline.id.au>
+#
+# SPDX-License-Identifier: GPL-3.0-only
+idf_component_register(
+  SRCS src/info.c src/internal.c src/internal.h src/opusfile.c src/stream.c
+  INCLUDE_DIRS "include"
+  REQUIRES "ogg")
+target_compile_options("${COMPONENT_LIB}" PRIVATE "-DOP_FIXED_POINT")
+
+set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
+
+set(OPUS_FIXED_POINT ON)
+set(OPUS_ENABLE_FLOAT_API OFF)
+set(OPUS_INSTALL_PKG_CONFIG_MODULE OFF)
+set(OPUS_INSTALL_CMAKE_CONFIG_MODULE OFF)
+set(OPUS_BUILD_TESTING OFF)
+set(OPUS_BUILD_SHARED_LIBS OFF)
+
+add_subdirectory($ENV{PROJ_PATH}/lib/opus ${CMAKE_CURRENT_BINARY_DIR}/opus)
+target_link_libraries(${COMPONENT_LIB} PUBLIC opus)