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https://gitee.com/openharmony/third_party_libsnd
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Add examples/sndfile-loopify.c
This commit is contained in:
Erik de Castro Lopo
parent
7e7041b502
commit
2ec38064dd
@ -1,12 +1,16 @@
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## Process this file with automake to produce Makefile.in
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noinst_PROGRAMS = make_sine sfprocess list_formats generate sndfilehandle sndfile-to-text
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noinst_PROGRAMS = make_sine sfprocess list_formats generate sndfilehandle \
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sndfile-to-text sndfile-loopify
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AM_CPPFLAGS = -I$(top_srcdir)/src
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sndfile_to_text_SOURCES = sndfile-to-text.c
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sndfile_to_text_LDADD = $(top_builddir)/src/libsndfile.la
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sndfile_loopify_SOURCES = sndfile-loopify.c
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sndfile_loopify_LDADD = $(top_builddir)/src/libsndfile.la
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make_sine_SOURCES = make_sine.c
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make_sine_LDADD = $(top_builddir)/src/libsndfile.la
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182
examples/sndfile-loopify.c
Normal file
182
examples/sndfile-loopify.c
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@ -0,0 +1,182 @@
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/*
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** Copyright (C) 1999-2015 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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**
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the author nor the names of any contributors may be used
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** to endorse or promote products derived from this software without
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** specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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** A quick/rough hack to add SF_INSTRUMENT data to a file. It compiles, but
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** no guarantees beyond that. Happy to receive patches to fix/improve it.
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**
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** Code for this was stolen from programs/sndfile-convert.c and related code.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <sndfile.h>
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#include "common.h"
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#define BUFFER_LEN (1 << 14)
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typedef struct
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{ char *infilename, *outfilename ;
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SF_INFO infileinfo, outfileinfo ;
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} OptionData ;
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const char * program_name (const char * argv0) ;
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static void sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels) ;
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static void add_instrument_data (SNDFILE *outfile, const SF_INFO * in_info) ;
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static void
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usage_exit (const char *progname)
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{
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printf ("\nUsage : %s <input file> <output file>\n", progname) ;
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puts ("") ;
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exit (1) ;
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} /* usage_exit */
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int
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main (int argc, char * argv [])
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{ const char *progname, *infilename, *outfilename ;
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SNDFILE *infile = NULL, *outfile = NULL ;
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SF_INFO in_sfinfo, out_sfinfo ;
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progname = program_name (argv [0]) ;
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if (argc < 3 || argc > 5)
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usage_exit (progname) ;
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infilename = argv [argc-2] ;
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outfilename = argv [argc-1] ;
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if (strcmp (infilename, outfilename) == 0)
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{ printf ("Error : Input and output filenames are the same.\n\n") ;
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usage_exit (progname) ;
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} ;
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if (strlen (infilename) > 1 && infilename [0] == '-')
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{ printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
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usage_exit (progname) ;
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} ;
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if (outfilename [0] == '-')
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{ printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
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usage_exit (progname) ;
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} ;
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memset (&in_sfinfo, 0, sizeof (in_sfinfo)) ;
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if ((infile = sf_open (infilename, SFM_READ, &in_sfinfo)) == NULL)
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{ printf ("Not able to open input file %s.\n", infilename) ;
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puts (sf_strerror (NULL)) ;
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return 1 ;
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} ;
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memcpy (&out_sfinfo, &in_sfinfo, sizeof (out_sfinfo)) ;
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/* Open the output file. */
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if ((outfile = sf_open (outfilename, SFM_WRITE, &out_sfinfo)) == NULL)
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{ printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
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return 1 ;
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} ;
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/* Add the loop data */
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add_instrument_data (outfile, &in_sfinfo) ;
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/* Copy the audio data */
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sfe_copy_data_int (outfile, infile, in_sfinfo.channels) ;
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sf_close (infile) ;
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sf_close (outfile) ;
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return 0 ;
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} /* main */
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const char *
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program_name (const char * argv0)
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{ const char * tmp ;
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tmp = strrchr (argv0, '/') ;
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argv0 = tmp ? tmp + 1 : argv0 ;
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/* Remove leading libtool name mangling. */
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if (strstr (argv0, "lt-") == argv0)
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return argv0 + 3 ;
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return argv0 ;
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} /* program_name */
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static void
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sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels)
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{ static int data [BUFFER_LEN] ;
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int frames, readcount ;
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frames = BUFFER_LEN / channels ;
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readcount = frames ;
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while (readcount > 0)
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{ readcount = sf_readf_int (infile, data, frames) ;
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sf_writef_int (outfile, data, readcount) ;
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} ;
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return ;
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} /* sfe_copy_data_int */
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static void
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add_instrument_data (SNDFILE *file, const SF_INFO *info)
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{ SF_INSTRUMENT instr ;
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memset (&instr, 0, sizeof (instr)) ;
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instr.gain = 1 ;
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instr.basenote = 0 ;
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instr.detune = 0 ;
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instr.velocity_lo = 0 ;
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instr.velocity_hi = 0 ;
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instr.key_lo = 0 ;
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instr.key_hi = 0 ;
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instr.loop_count = 1 ;
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instr.loops [0].mode = SF_LOOP_FORWARD ;
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instr.loops [0].start = 0 ;
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instr.loops [0].end = info->frames ;
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instr.loops [0].count = 0 ;
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if (sf_command (file, SFC_SET_INSTRUMENT, &instr, sizeof (instr)) == SF_FALSE)
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{ printf ("\n\nLine %d : sf_command (SFC_SET_INSTRUMENT) failed.\n\n", __LINE__) ;
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exit (1) ;
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} ;
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return ;
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} /* add_instrument_data */
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