Merge branch 'libsndfile'

[Faustine.git] / interpretor / lib / src / libsndfile-1.0.25 / examples / make_sine.c

diff --git a/interpretor/lib/src/libsndfile-1.0.25/examples/make_sine.c b/interpretor/lib/src/libsndfile-1.0.25/examples/make_sine.c
new file mode 100644 (file)
index 0000000..ec8a830
--- /dev/null
+++ b/interpretor/lib/src/libsndfile-1.0.25/examples/make_sine.c
@@ -0,0 +1,96 @@
+/*
+** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** 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       <math.h>
+
+#include       <sndfile.h>
+
+#ifndef                M_PI
+#define                M_PI            3.14159265358979323846264338
+#endif
+
+#define                SAMPLE_RATE                     44100
+#define                SAMPLE_COUNT            (SAMPLE_RATE * 4)       /* 4 seconds */
+#define                AMPLITUDE                       (1.0 * 0x7F000000)
+#define                LEFT_FREQ                       (344.0 / SAMPLE_RATE)
+#define                RIGHT_FREQ                      (466.0 / SAMPLE_RATE)
+
+int
+main (void)
+{      SNDFILE *file ;
+       SF_INFO sfinfo ;
+       int             k ;
+       int     *buffer ;
+
+       if (! (buffer = malloc (2 * SAMPLE_COUNT * sizeof (int))))
+       {       printf ("Malloc failed.\n") ;
+               exit (0) ;
+               } ;
+
+       memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+       sfinfo.samplerate       = SAMPLE_RATE ;
+       sfinfo.frames           = SAMPLE_COUNT ;
+       sfinfo.channels         = 2 ;
+       sfinfo.format           = (SF_FORMAT_WAV | SF_FORMAT_PCM_24) ;
+
+       if (! (file = sf_open ("sine.wav", SFM_WRITE, &sfinfo)))
+       {       printf ("Error : Not able to open output file.\n") ;
+               return 1 ;
+               } ;
+
+       if (sfinfo.channels == 1)
+       {       for (k = 0 ; k < SAMPLE_COUNT ; k++)
+                       buffer [k] = AMPLITUDE * sin (LEFT_FREQ * 2 * k * M_PI) ;
+               }
+       else if (sfinfo.channels == 2)
+       {       for (k = 0 ; k < SAMPLE_COUNT ; k++)
+               {       buffer [2 * k] = AMPLITUDE * sin (LEFT_FREQ * 2 * k * M_PI) ;
+                       buffer [2 * k + 1] = AMPLITUDE * sin (RIGHT_FREQ * 2 * k * M_PI) ;
+                       } ;
+               }
+       else
+       {       printf ("makesine can only generate mono or stereo files.\n") ;
+               exit (1) ;
+               } ;
+
+       if (sf_write_int (file, buffer, sfinfo.channels * SAMPLE_COUNT) !=
+                                                                                       sfinfo.channels * SAMPLE_COUNT)
+               puts (sf_strerror (file)) ;
+
+       sf_close (file) ;
+       return   0 ;
+} /* main */
+