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/*
** Copyright (C) 2007-2011 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
** 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 */
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