Gets an existing post and format it for editing.

Get the real filesystem path to a file to edit within the admin.

Retrieves the screen icon (no longer used in 3.8+).

Calculated the new dimensions for a downsampled image.

Was used to filter input from media_upload_form_handler() and to assign a default post_title from the file name if none supplied.

Handles uploading an audio file.

Handles uploading a generic file.

Handles uploading an image.

Handles uploading a video file.

Display JavaScript on the page.