ref: 908a992d7fde8218139c0ad298d8a60cc66650b6
dir: /vpx/exports_enc/
text vpx_codec_enc_config_default text vpx_codec_enc_config_set text vpx_codec_enc_init_ver text vpx_codec_encode text vpx_codec_get_cx_data text vpx_codec_get_global_headers text vpx_codec_get_preview_frame text vpx_codec_set_cx_data_buf text vpx_svc_init text vpx_svc_encode text svc_dump_statistics text svc_get_message text svc_get_buffer text svc_get_frame_size text svc_get_encode_frame_count text svc_is_keyframe text svc_set_keyframe