diff src/libsndfile-1.0.25/tests/vorbis_test.c @ 85:545efbb81310

Import initial set of sources

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libsndfile-1.0.25/tests/vorbis_test.c	Mon Mar 18 14:12:14 2013 +0000
@@ -0,0 +1,176 @@
+/*
+** Copyright (C) 2007-2011 Erik de Castro Lopo <[e-mail]>
+**
+** 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
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <math.h>
+
+#include	<sndfile.h>
+
+#include	"utils.h"
+#include	"dft_cmp.h"
+
+#define	SAMPLE_RATE		16000
+#define	DATA_LENGTH		(SAMPLE_RATE / 8)
+
+static float data_out [DATA_LENGTH] ;
+
+static inline float
+max_float (float a, float b)
+{	return a > b ? a : b ;
+} /* max_float */
+
+static void
+vorbis_test (void)
+{	static float float_data [DFT_DATA_LENGTH] ;
+	const char * filename = "vorbis_test.oga" ;
+	SNDFILE * file ;
+	SF_INFO sfinfo ;
+	float max_abs = 0.0 ;
+	unsigned k ;
+
+	print_test_name ("vorbis_test", filename) ;
+
+	/* Generate float data. */
+	gen_windowed_sine_float (float_data, ARRAY_LEN (float_data), 1.0) ;
+
+	/* Set up output file type. */
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+	sfinfo.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ;
+	sfinfo.channels = 1 ;
+	sfinfo.samplerate = SAMPLE_RATE ;
+
+	/* Write the output file. */
+
+	/*	The Vorbis encoder has a bug on PowerPC and X86-64 with sample rates
+	**	<= 22050. Increasing the sample rate to 32000 avoids triggering it.
+	**	See https://trac.xiph.org/ticket/1229
+	*/
+	if ((file = sf_open (filename, SFM_WRITE, &sfinfo)) == NULL)
+	{	const char * errstr ;
+
+		errstr = sf_strerror (NULL) ;
+		if (strstr (errstr, "Sample rate chosen is known to trigger a Vorbis") == NULL)
+		{	printf ("Line %d: sf_open (SFM_WRITE) failed : %s\n", __LINE__, errstr) ;
+			dump_log_buffer (NULL) ;
+			exit (1) ;
+			} ;
+
+		printf ("\n                                  Sample rate -> 32kHz    ") ;
+		sfinfo.samplerate = 32000 ;
+
+		file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;
+		} ;
+
+	test_write_float_or_die (file, 0, float_data, ARRAY_LEN (float_data), __LINE__) ;
+	sf_close (file) ;
+
+	memset (float_data, 0, sizeof (float_data)) ;
+
+	/* Read the file back in again. */
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+	file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_FALSE, __LINE__) ;
+	test_read_float_or_die (file, 0, float_data, ARRAY_LEN (float_data), __LINE__) ;
+	sf_close (file) ;
+
+	for (k = 0 ; k < ARRAY_LEN (float_data) ; k ++)
+		max_abs = max_float (max_abs, fabs (float_data [k])) ;
+
+	if (max_abs > 1.021)
+	{	printf ("\n\n    Error : max_abs %f should be < 1.021.\n\n", max_abs) ;
+		exit (1) ;
+		} ;
+
+	puts ("ok") ;
+	unlink (filename) ;
+} /* vorbis_test */
+
+static void
+vorbis_quality_test (void)
+{	/*
+	**	Encode two files, one at quality 0.3 and one at quality 0.5 and then
+	**	make sure that the quality 0.3 files is the smaller of the two.
+	*/
+	const char * q3_fname = "q3_vorbis.oga" ;
+	const char * q5_fname = "q5_vorbis.oga" ;
+
+	SNDFILE *q3_file, *q5_file ;
+	SF_INFO sfinfo ;
+	int q3_size, q5_size ;
+	double quality ;
+	int k ;
+
+	print_test_name (__func__, "q[35]_vorbis.oga") ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	/* Set up output file type. */
+	sfinfo.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS ;
+	sfinfo.channels = 1 ;
+	sfinfo.samplerate = SAMPLE_RATE ;
+
+	/* Write the output file. */
+	q3_file = test_open_file_or_die (q3_fname, SFM_WRITE, &sfinfo, SF_FALSE, __LINE__) ;
+	q5_file = test_open_file_or_die (q5_fname, SFM_WRITE, &sfinfo, SF_FALSE, __LINE__) ;
+
+	quality = 0.3 ;
+	sf_command (q3_file, SFC_SET_VBR_ENCODING_QUALITY, &quality, sizeof (quality)) ;
+	quality = 0.5 ;
+	sf_command (q5_file, SFC_SET_VBR_ENCODING_QUALITY, &quality, sizeof (quality)) ;
+
+	for (k = 0 ; k < 5 ; k++)
+	{	gen_lowpass_noise_float (data_out, ARRAY_LEN (data_out)) ;
+		test_write_float_or_die (q3_file, 0, data_out, ARRAY_LEN (data_out), __LINE__) ;
+		test_write_float_or_die (q5_file, 0, data_out, ARRAY_LEN (data_out), __LINE__) ;
+		} ;
+
+	sf_close (q3_file) ;
+	sf_close (q5_file) ;
+
+	q3_size = file_length (q3_fname) ;
+	q5_size = file_length (q5_fname) ;
+
+	if (q3_size >= q5_size)
+	{	printf ("\n\nLine %d : q3 size (%d) >= q5 size (%d)\n\n", __LINE__, q3_size, q5_size) ;
+		exit (1) ;
+		} ;
+
+	puts ("ok") ;
+	unlink (q3_fname) ;
+	unlink (q5_fname) ;
+} /* vorbis_quality_test */
+
+
+
+int
+main (void)
+{
+	if (HAVE_EXTERNAL_LIBS)
+	{	vorbis_test () ;
+		vorbis_quality_test () ;
+		}
+	else
+		puts ("    No Ogg/Vorbis tests because Ogg/Vorbis support was not compiled in.") ;
+
+	return 0 ;
+} /* main */