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Fix writing 24-bit PAF files and possibly other libsndfile formats that
depend on get_filelen() behavior.

--- a/ChangeLog

+++ b/ChangeLog

@@ -40,6 +40,8 @@

   o CVSD encode/decode speed-ups.  (Kimberly Rockwell, P. Chaintreuil)

   o Add ability to select MP3 compression parameters.  (Jim Harkins)

   o Now writes out ID3-tags in MP3 files.  (Doug Cook)

+  o Fix failed writing 24-bit PAF files (and possibly other libsndfile

+    based formats).  (cbagwell)

 Audio device drivers:

--- a/src/sndfile.c

+++ b/src/sndfile.c

@@ -230,6 +230,11 @@

 static sf_count_t vio_get_filelen(void *user_data)

 {

+  sox_format_t *ft = (sox_format_t *)user_data;

+

+  /* lsf excepts unbuffered I/O behavior for get_filelen() so force that */

+  fflush(ft->fp);

+

   return lsx_filelength((sox_format_t *)user_data);

 }