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freeswitch/libs/libsndfile/examples/sndfile-info.c

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/*
** Copyright (C) 1999-2006 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <sndfile.h>
#define BUFFER_LEN (1 << 16)
#if (defined (WIN32) || defined (_WIN32))
#define snprintf _snprintf
#endif
static void print_version (void) ;
static void print_usage (const char *progname) ;
static void info_dump (const char *filename) ;
static void instrument_dump (const char *filename) ;
static void broadcast_dump (const char *filename) ;
int
main (int argc, char *argv [])
{ int k ;
print_version () ;
if (argc < 2 || strcmp (argv [1], "--help") == 0 || strcmp (argv [1], "-h") == 0)
{ char *progname ;
progname = strrchr (argv [0], '/') ;
progname = progname ? progname + 1 : argv [0] ;
print_usage (progname) ;
return 1 ;
} ;
if (strcmp (argv [1], "-i") == 0)
{ instrument_dump (argv [2]) ;
return 0 ;
} ;
if (strcmp (argv [1], "-b") == 0)
{ broadcast_dump (argv [2]) ;
return 0 ;
} ;
for (k = 1 ; k < argc ; k++)
info_dump (argv [k]) ;
return 0 ;
} /* main */
/*==============================================================================
** Print version and usage.
*/
static double data [BUFFER_LEN] ;
static void
print_version (void)
{ char buffer [256] ;
sf_command (NULL, SFC_GET_LIB_VERSION, buffer, sizeof (buffer)) ;
printf ("\nVersion : %s\n\n", buffer) ;
} /* print_version */
static void
print_usage (const char *progname)
{ printf ("Usage :\n %s <file> ...\n", progname) ;
printf (" Prints out information about one or more sound files.\n\n") ;
printf (" %s -i <file>\n", progname) ;
printf (" Prints out the instrument data for the given file.\n\n") ;
printf (" %s -b <file>\n", progname) ;
printf (" Prints out the broadcast WAV info for the given file.\n\n") ;
#if (defined (_WIN32) || defined (WIN32))
printf ("This is a Unix style command line application which\n"
"should be run in a MSDOS box or Command Shell window.\n\n") ;
printf ("Sleeping for 5 seconds before exiting.\n\n") ;
fflush (stdout) ;
/* This is the officially blessed by microsoft way but I can't get
** it to link.
** Sleep (15) ;
** Instead, use this:
*/
_sleep (5 * 1000) ;
#endif
} /* print_usage */
/*==============================================================================
** Dumping of sndfile info.
*/
static double data [BUFFER_LEN] ;
static double
get_signal_max (SNDFILE *file)
{ double max, temp ;
int readcount, k, save_state ;
save_state = sf_command (file, SFC_GET_NORM_DOUBLE, NULL, 0) ;
sf_command (file, SFC_SET_NORM_DOUBLE, NULL, SF_FALSE) ;
max = 0.0 ;
while ((readcount = sf_read_double (file, data, BUFFER_LEN)))
{ for (k = 0 ; k < readcount ; k++)
{ temp = fabs (data [k]) ;
if (temp > max)
max = temp ;
} ;
} ;
sf_command (file, SFC_SET_NORM_DOUBLE, NULL, save_state) ;
return max ;
} /* get_signal_max */
static double
calc_decibels (SF_INFO * sfinfo, double max)
{ double decibels ;
switch (sfinfo->format & SF_FORMAT_SUBMASK)
{ case SF_FORMAT_PCM_U8 :
case SF_FORMAT_PCM_S8 :
decibels = max / 0x80 ;
break ;
case SF_FORMAT_PCM_16 :
decibels = max / 0x8000 ;
break ;
case SF_FORMAT_PCM_24 :
decibels = max / 0x800000 ;
break ;
case SF_FORMAT_PCM_32 :
decibels = max / 0x80000000 ;
break ;
case SF_FORMAT_FLOAT :
case SF_FORMAT_DOUBLE :
decibels = max / 1.0 ;
break ;
default :
decibels = max / 0x8000 ;
break ;
} ;
return 20.0 * log10 (decibels) ;
} /* calc_decibels */
static const char *
generate_duration_str (SF_INFO *sfinfo)
{ static char str [128] ;
int seconds ;
memset (str, 0, sizeof (str)) ;
if (sfinfo->samplerate < 1)
return NULL ;
if (sfinfo->frames / sfinfo->samplerate > 0x7FFFFFFF)
return "unknown" ;
seconds = sfinfo->frames / sfinfo->samplerate ;
snprintf (str, sizeof (str) - 1, "%02d:", seconds / 60 / 60) ;
seconds = seconds % (60 * 60) ;
snprintf (str + strlen (str), sizeof (str) - strlen (str) - 1, "%02d:", seconds / 60) ;
seconds = seconds % 60 ;
snprintf (str + strlen (str), sizeof (str) - strlen (str) - 1, "%02d.", seconds) ;
seconds = ((1000 * sfinfo->frames) / sfinfo->samplerate) % 1000 ;
snprintf (str + strlen (str), sizeof (str) - strlen (str) - 1, "%03d", seconds) ;
return str ;
} /* generate_duration_str */
static void
info_dump (const char *filename)
{ static char strbuffer [BUFFER_LEN] ;
SNDFILE *file ;
SF_INFO sfinfo ;
double signal_max, decibels ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
if ((file = sf_open (filename, SFM_READ, &sfinfo)) == NULL)
{ printf ("Error : Not able to open input file %s.\n", filename) ;
fflush (stdout) ;
memset (data, 0, sizeof (data)) ;
sf_command (file, SFC_GET_LOG_INFO, strbuffer, BUFFER_LEN) ;
puts (strbuffer) ;
puts (sf_strerror (NULL)) ;
return ;
} ;
printf ("========================================\n") ;
sf_command (file, SFC_GET_LOG_INFO, strbuffer, BUFFER_LEN) ;
puts (strbuffer) ;
printf ("----------------------------------------\n") ;
if (file == NULL)
{ printf ("Error : Not able to open input file %s.\n", filename) ;
fflush (stdout) ;
memset (data, 0, sizeof (data)) ;
puts (sf_strerror (NULL)) ;
}
else
{ printf ("Sample Rate : %d\n", sfinfo.samplerate) ;
if (sfinfo.frames > 0x7FFFFFFF)
printf ("Frames : unknown\n") ;
else
printf ("Frames : %ld\n", (long) sfinfo.frames) ;
printf ("Channels : %d\n", sfinfo.channels) ;
printf ("Format : 0x%08X\n", sfinfo.format) ;
printf ("Sections : %d\n", sfinfo.sections) ;
printf ("Seekable : %s\n", (sfinfo.seekable ? "TRUE" : "FALSE")) ;
printf ("Duration : %s\n", generate_duration_str (&sfinfo)) ;
/* Do not use sf_signal_max because it doesn work for non-seekable files . */
signal_max = get_signal_max (file) ;
decibels = calc_decibels (&sfinfo, signal_max) ;
printf ("Signal Max : %g (%4.2f dB)\n\n", signal_max, decibels) ;
} ;
sf_close (file) ;
} /* info_dump */
/*==============================================================================
** Dumping of SF_INSTRUMENT data.
*/
static const char *
str_of_type (int mode)
{ switch (mode)
{ case SF_LOOP_NONE : return "none" ;
case SF_LOOP_FORWARD : return "fwd " ;
case SF_LOOP_BACKWARD : return "back" ;
case SF_LOOP_ALTERNATING : return "alt " ;
default : break ;
} ;
return "????" ;
} /* str_of_mode */
static void
instrument_dump (const char *filename)
{ SNDFILE *file ;
SF_INFO sfinfo ;
SF_INSTRUMENT inst ;
int got_inst, k ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
if ((file = sf_open (filename, SFM_READ, &sfinfo)) == NULL)
{ printf ("Error : Not able to open input file %s.\n", filename) ;
fflush (stdout) ;
memset (data, 0, sizeof (data)) ;
puts (sf_strerror (NULL)) ;
return ;
} ;
got_inst = sf_command (file, SFC_GET_INSTRUMENT, &inst, sizeof (inst)) ;
sf_close (file) ;
if (got_inst == SF_FALSE)
{ printf ("Error : File '%s' does not contain instrument data.\n\n", filename) ;
return ;
} ;
printf ("Instrument : %s\n\n", filename) ;
printf (" Gain : %d\n", inst.gain) ;
printf (" Base note : %d\n", inst.basenote) ;
printf (" Velocity : %d - %d\n", (int) inst.velocity_lo, (int) inst.velocity_hi) ;
printf (" Key : %d - %d\n", (int) inst.key_lo, (int) inst.key_hi) ;
printf (" Loop points : %d\n", inst.loop_count) ;
for (k = 0 ; k < inst.loop_count ; k++)
printf (" %-2d Mode : %s Start : %6d End : %6d Count : %6d\n", k, str_of_type (inst.loops [k].mode), inst.loops [k].start, inst.loops [k].end, inst.loops [k].count) ;
putchar ('\n') ;
} /* instrument_dump */
static void
broadcast_dump (const char *filename)
{ SNDFILE *file ;
SF_INFO sfinfo ;
SF_BROADCAST_INFO bext ;
int got_bext ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
if ((file = sf_open (filename, SFM_READ, &sfinfo)) == NULL)
{ printf ("Error : Not able to open input file %s.\n", filename) ;
fflush (stdout) ;
memset (data, 0, sizeof (data)) ;
puts (sf_strerror (NULL)) ;
return ;
} ;
memset (&bext, 0, sizeof (SF_BROADCAST_INFO)) ;
got_bext = sf_command (file, SFC_GET_BROADCAST_INFO, &bext, sizeof (bext)) ;
sf_close (file) ;
if (got_bext == SF_FALSE)
{ printf ("Error : File '%s' does not contain broadcast information.\n\n", filename) ;
return ;
} ;
printf ("Description : %.*s\n", (int) sizeof (bext.description), bext.description) ;
printf ("Originator : %.*s\n", (int) sizeof (bext.originator), bext.originator) ;
printf ("Origination ref : %.*s\n", (int) sizeof (bext.originator_reference), bext.originator_reference) ;
printf ("Origination date : %.*s\n", (int) sizeof (bext.origination_date), bext.origination_date) ;
printf ("Origination time : %.*s\n", (int) sizeof (bext.origination_time), bext.origination_time) ;
printf ("BWF version : %d\n", bext.version) ;
printf ("UMID : %.*s\n", (int) sizeof (bext.umid), bext.umid) ;
printf ("Coding history : %.*s\n", bext.coding_history_size, bext.coding_history) ;
} /* broadcast_dump */
/*
** Do not edit or modify anything in this comment block.
** The arch-tag line is a file identity tag for the GNU Arch
** revision control system.
**
** arch-tag: f59a05db-a182-41de-aedd-d717ce2bb099
*/
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