Prevent creation of double length output files when conversion is restarted due to clipping of the output when the format is FLAC. This problem arises due to libsndfile's in ability to seek in a FLAC file during write.

Erik de Castro Lopo committed 16 years ago

Commit 19b5adc1 parent 5b237382 files · +29 −21Browse files

Unified · Split

2 files

ChangeLog +7 −0
examples/sndfile-resample.c +22 −21

@@ -1,3 +1,10 @@
		1	2010-01-10 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
		2
		3	* examples/sndfile-resample.c
		4	Prevent creation of double length output files when conversion is restarted
		5	due to clipping of the output when the format is FLAC. This problem arises
		6	due to libsndfile's in ability to seek in a FLAC file during write.
		7
1	2009-12-01 Erik de Castro Lopo <erikd AT mega-nerd DOT com>	8	2009-12-01 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
2		9
3	* doc/win32.html	10	* doc/win32.html

examples/sndfile-resample.c+22−21

 /*
-** Copyright (C) 2002-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
+** Copyright (C) 2002-2010 Erik de Castro Lopo <erikd@mega-nerd.com>
 **
 ** This program is free software; you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 int
 main (int argc, char *argv [])
-{	SNDFILE	*infile, *outfile ;
+{	SNDFILE	*infile, *outfile = NULL ;
 	SF_INFO sfinfo ;
 	sf_count_t	count ;
 	/* Delete the output file length to zero if already exists. */
 	remove (argv [argc - 1]) ;
-	if ((outfile = sf_open (argv [argc - 1], SFM_WRITE, &sfinfo)) == NULL)
-	{	printf ("Error : Not able to open output file '%s'\n", argv [argc - 1]) ;
-		sf_close (infile) ;
-		exit (1) ;
-		} ;
-	if (max_speed)
-	{	/* This is mainly for the comparison program tests/src-evaluate.c */
-		sf_command (outfile, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
-		}
-	else
-	{	/* Update the file header after every write. */
-		sf_command (outfile, SFC_SET_UPDATE_HEADER_AUTO, NULL, SF_TRUE) ;
-		} ;
-	sf_command (outfile, SFC_SET_CLIPPING, NULL, SF_TRUE) ;
 	printf ("Output file   : %s\n", argv [argc - 1]) ;
 	printf ("Sample Rate   : %d\n", sfinfo.samplerate) ;
 	do
+	{	sf_close (outfile) ;
+		if ((outfile = sf_open (argv [argc - 1], SFM_WRITE, &sfinfo)) == NULL)
+		{	printf ("Error : Not able to open output file '%s'\n", argv [argc - 1]) ;
+			sf_close (infile) ;
+			exit (1) ;
+			} ;
+		if (max_speed)
+		{	/* This is mainly for the comparison program tests/src-evaluate.c */
+			sf_command (outfile, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
+			}
+		else
+		{	/* Update the file header after every write. */
+			sf_command (outfile, SFC_SET_UPDATE_HEADER_AUTO, NULL, SF_TRUE) ;
+			} ;
+		sf_command (outfile, SFC_SET_CLIPPING, NULL, SF_TRUE) ;
 		count = sample_rate_convert (infile, outfile, converter, src_ratio, sfinfo.channels, &gain) ;
+		}
 	while (count < 0) ;
 	printf ("Output Frames : %ld\n\n", (long) count) ;
 	if (max > 1.0)
 	{	*gain = 1.0 / max ;
 		printf ("\nOutput has clipped. Restarting conversion to prevent clipping.\n\n") ;
-		output_count = 0 ;
-		sf_command (outfile, SFC_FILE_TRUNCATE, &output_count, sizeof (output_count)) ;
 		return -1 ;
 		} ;

Prevent creation of double length output files when conversion is restarted due to clipping of the output when the format is FLAC. This problem arises due to libsndfile's in ability to seek in a FLAC file during write.

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