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freeswitch/libs/libsndfile/programs/common.c

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/*
** Copyright (C) 1999-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
** Copyright (C) 2008 George Blood Audio
**
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the author nor the names of any contributors may be used
** to endorse or promote products derived from this software without
** specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sndfile.h>
#include "common.h"
#define BUFFER_LEN 4096
#define MIN(x,y) ((x) < (y) ? (x) : (y))
void
sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels)
{ static double data [BUFFER_LEN], max ;
int frames, readcount, k ;
frames = BUFFER_LEN / channels ;
readcount = frames ;
sf_command (infile, SFC_CALC_SIGNAL_MAX, &max, sizeof (max)) ;
if (max < 1.0)
{ while (readcount > 0)
{ readcount = sf_readf_double (infile, data, frames) ;
sf_writef_double (outfile, data, readcount) ;
} ;
}
else
{ sf_command (infile, SFC_SET_NORM_DOUBLE, NULL, SF_FALSE) ;
while (readcount > 0)
{ readcount = sf_readf_double (infile, data, frames) ;
for (k = 0 ; k < readcount * channels ; k++)
data [k] /= max ;
sf_writef_double (outfile, data, readcount) ;
} ;
} ;
return ;
} /* sfe_copy_data_fp */
void
sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels)
{ static int data [BUFFER_LEN] ;
int frames, readcount ;
frames = BUFFER_LEN / channels ;
readcount = frames ;
while (readcount > 0)
{ readcount = sf_readf_int (infile, data, frames) ;
sf_writef_int (outfile, data, readcount) ;
} ;
return ;
} /* sfe_copy_data_int */
/*==============================================================================
*/
static int
merge_broadcast_info (SNDFILE * infile, SNDFILE * outfile, int format, const METADATA_INFO * info)
{ SF_BROADCAST_INFO_2K binfo ;
int infileminor ;
memset (&binfo, 0, sizeof (binfo)) ;
if ((SF_FORMAT_TYPEMASK & format) != SF_FORMAT_WAV)
{ printf ("Error : This is not a WAV file and hence broadcast info cannot be added to it.\n\n") ;
return 1 ;
} ;
infileminor = SF_FORMAT_SUBMASK & format ;
switch (infileminor)
{ case SF_FORMAT_PCM_16 :
case SF_FORMAT_PCM_24 :
case SF_FORMAT_PCM_32 :
break ;
default :
printf (
"Warning : The EBU Technical Recommendation R68-2000 states that the only\n"
" allowed encodings are Linear PCM and MPEG3. This file is not in\n"
" the right format.\n\n"
) ;
break ;
} ;
if (sf_command (infile, SFC_GET_BROADCAST_INFO, &binfo, sizeof (binfo)) == 0)
{ if (infile == outfile)
{ printf (
"Error : Attempting in-place broadcast info update, but file does not\n"
" have a 'bext' chunk to modify. The solution is to specify both\n"
" input and output files on the command line.\n\n"
) ;
return 1 ;
} ;
} ;
#define REPLACE_IF_NEW(x) \
if (info->x != NULL) \
{ memset (binfo.x, 0, sizeof (binfo.x)) ; \
memcpy (binfo.x, info->x, MIN (strlen (info->x), sizeof (binfo.x))) ; \
} ;
REPLACE_IF_NEW (description) ;
REPLACE_IF_NEW (originator) ;
REPLACE_IF_NEW (originator_reference) ;
REPLACE_IF_NEW (origination_date) ;
REPLACE_IF_NEW (origination_time) ;
REPLACE_IF_NEW (umid) ;
/* Special case for coding_history because we may want to append. */
if (info->coding_history != NULL)
{ if (info->coding_hist_append)
{ int slen = strlen (binfo.coding_history) ;
while (slen > 1 && isspace (binfo.coding_history [slen - 1]))
slen -- ;
memcpy (binfo.coding_history + slen, info->coding_history, sizeof (binfo.coding_history) - slen) ;
}
else
{ size_t slen = MIN (strlen (info->coding_history), sizeof (binfo.coding_history)) ;
memset (binfo.coding_history, 0, sizeof (binfo.coding_history)) ;
memcpy (binfo.coding_history, info->coding_history, slen) ;
binfo.coding_history_size = slen ;
} ;
} ;
if (sf_command (outfile, SFC_SET_BROADCAST_INFO, &binfo, sizeof (binfo)) == 0)
{ printf ("Error : Setting of broadcast info chunks failed.\n\n") ;
return 1 ;
} ;
return 0 ;
} /* merge_broadcast_info*/
static void
update_strings (SNDFILE * outfile, const METADATA_INFO * info)
{
if (info->title != NULL)
sf_set_string (outfile, SF_STR_TITLE, info->title) ;
if (info->copyright != NULL)
sf_set_string (outfile, SF_STR_TITLE, info->copyright) ;
if (info->artist != NULL)
sf_set_string (outfile, SF_STR_ARTIST, info->artist) ;
if (info->comment != NULL)
sf_set_string (outfile, SF_STR_TITLE, info->comment) ;
if (info->date != NULL)
sf_set_string (outfile, SF_STR_DATE, info->date) ;
if (info->album != NULL)
sf_set_string (outfile, SF_STR_TITLE, info->album) ;
if (info->license != NULL)
sf_set_string (outfile, SF_STR_TITLE, info->license) ;
} /* update_strings */
void
sfe_apply_metadata_changes (const char * filenames [2], const METADATA_INFO * info)
{ SNDFILE *infile = NULL, *outfile = NULL ;
SF_INFO sfinfo ;
METADATA_INFO tmpinfo ;
int error_code = 0 ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
memset (&tmpinfo, 0, sizeof (tmpinfo)) ;
if (filenames [1] == NULL)
infile = outfile = sf_open (filenames [0], SFM_RDWR, &sfinfo) ;
else
{ infile = sf_open (filenames [0], SFM_READ, &sfinfo) ;
/* Output must be WAV. */
sfinfo.format = SF_FORMAT_WAV | (SF_FORMAT_SUBMASK & sfinfo.format) ;
outfile = sf_open (filenames [1], SFM_WRITE, &sfinfo) ;
} ;
if (infile == NULL)
{ printf ("Error : Not able to open input file '%s' : %s\n", filenames [0], sf_strerror (infile)) ;
error_code = 1 ;
goto cleanup_exit ;
} ;
if (outfile == NULL)
{ printf ("Error : Not able to open output file '%s' : %s\n", filenames [1], sf_strerror (outfile)) ;
error_code = 1 ;
goto cleanup_exit ;
} ;
if (info->has_bext_fields && merge_broadcast_info (infile, outfile, sfinfo.format, info))
{ error_code = 1 ;
goto cleanup_exit ;
} ;
update_strings (outfile, info) ;
if (infile != outfile)
{ int infileminor = SF_FORMAT_SUBMASK & sfinfo.format ;
/* If the input file is not the same as the output file, copy the data. */
if ((infileminor == SF_FORMAT_DOUBLE) || (infileminor == SF_FORMAT_FLOAT))
sfe_copy_data_fp (outfile, infile, sfinfo.channels) ;
else
sfe_copy_data_int (outfile, infile, sfinfo.channels) ;
} ;
cleanup_exit :
if (outfile != NULL && outfile != infile)
sf_close (outfile) ;
if (infile != NULL)
sf_close (infile) ;
if (error_code)
exit (error_code) ;
return ;
} /* sfe_apply_metadata_changes */
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