index

scrbl/flac-decoder.scrbl

@@ -9,7 +9,7 @@
 @title{flac-decoder}
 @author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
 
-@defmodule[racket-audio/flac-decoder]
+@defmodule[racket-audio/flac-decoder #:use-sources (racket-audio/flac-definitions)]
 
 This module provides a small decoder interface on top of the FLAC
 FFI layer. It opens a decoder for a file, reads stream metadata,
@@ -33,12 +33,12 @@ exist, the result is @racket[#f].
 
 Otherwise a native decoder handler is created with
 @racket[flac-ffi-decoder-handler], initialized with the file, and
-wrapped in a @racket[flac-handle]. The given callbacks are stored
+wrapped in a @racket[flac-handle?]. The given callbacks are stored
 in the handle.
 
 When metadata of type @racket['streaminfo] is processed and
 @racket[cb-stream-info] is a procedure, it is called with a
-@racket[flac-stream-info] value.
+@racket[flac-stream-info?] value.
 
 When decoded audio data is processed and @racket[cb-audio] is a
 procedure, it is called as
@@ -80,7 +80,7 @@ with @racket['stopped-reading] and @racket[reading] is reset to
 
 Whenever pending metadata is available, it is processed with
 @racket[process-meta]. For metadata of type
-@racket['streaminfo], a @racket[flac-stream-info] value is
+@racket['streaminfo], a @racket[flac-stream-info?] value is
 constructed, stored in the handle, and passed to the
 stream-info callback.
 
@@ -110,7 +110,7 @@ metadata is processed and the stored stream info is returned.
 Otherwise the result is @racket[#f].
 
 Only metadata of type @racket['streaminfo] is converted into a
-@racket[flac-stream-info] value by this module.
+@racket[flac-stream-info?] value by this module.
 }
 
 @defproc[(flac-stop [handle flac-handle?]) void?]{
@@ -125,6 +125,13 @@ The procedure prints timing information before and after the
 wait.
 }
 
+@defproc[(flac-duration [handle flac-handle?])
+         (or/c #f exact-nonnegative-integer?)]{
+
+Returns the rounded duration in seconds, or @racket[#f] while no stream
+information is available.
+}
+
 @section{Diagnostic bindings}
 
 @defthing[kinds hash?]{