Merge branch 'libsndfile'

[Faustine.git] / interpretor / lib / src / libsndfile-ocaml / test_sndfile.ml

diff --git a/interpretor/lib/src/libsndfile-ocaml/test_sndfile.ml b/interpretor/lib/src/libsndfile-ocaml/test_sndfile.ml
new file mode 100644 (file)
index 0000000..8cee2b7
--- /dev/null
+++ b/interpretor/lib/src/libsndfile-ocaml/test_sndfile.ml
@@ -0,0 +1,59 @@
+(* Rudimentary testing of the Ocaml libsndfile wrapper. *)
+
+let write_test filename =
+       let fmt = Sndfile.format Sndfile.MAJOR_WAV Sndfile.MINOR_PCM_16 in
+       let file = Sndfile.openfile ~info:(Sndfile.WRITE, fmt, 2, 44100) filename in
+       let writecount = Sndfile.write file [| 0.0 ;  0.0 ;  0.0 ;  0.0 ;  0.0 ;  0.0 ;  0.0 ;  0.5 |] in
+       Printf.printf "Wrote %d items.\n" writecount ;
+       Sndfile.close file
+
+let read_test filename =
+       let file = Sndfile.openfile filename in
+       Printf.printf "File contains %Ld frames.\n" (Sndfile.frames file) ;
+       let data = Array.create 100 0.0 in
+       let readcount = Sndfile.read file data in
+       Printf.printf "Read %d items.\n" readcount ;
+       Sndfile.close file
+
+let finalize_test filename =
+       let sub_open_file = 
+               let file = Sndfile.openfile filename in
+               ignore file
+       in
+       (* Compact the heap. *)
+       Gc.compact () ;
+       let pre_stat = Gc.stat () in
+       sub_open_file ;
+       (* Compact the heap again. *)
+       Gc.compact () ;
+       (* Compare before and after. *)
+       let post_stat = Gc.stat () in
+       if pre_stat.Gc.heap_words != post_stat.Gc.heap_words then
+       (       Printf.printf "\nFinalize not working : before %d -> after %d\n\n" pre_stat.Gc.heap_words post_stat.Gc.heap_words ;
+               exit 1
+               )
+       else ()
+
+let bad_read_test filename =
+       try
+               let file = Sndfile.openfile filename in
+               ignore file ;
+               print_endline "Ooops, this should have failed." ;
+               exit 1
+       with
+               Sndfile.Error (e, s) ->
+                       if s = "System error." then () else
+                       (       Printf.printf "Bad error '%s'\n" s ;
+                               exit 1
+                               )
+
+
+let _ =
+       print_endline "------------------------" ;
+       let filename = "a.wav" in
+       write_test filename ;
+       read_test filename ;
+       finalize_test filename ;
+       bad_read_test "this_file_does_not_exist.wav" ;
+       print_endline "Done : All passed."
+