| /* |
| ** Copyright (C) 2008-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| ** Copyright (C) 2008 Conrad Parker <conrad@metadecks.org> |
| ** |
| ** 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 "sfconfig.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <inttypes.h> |
| |
| #include <sndfile.h> |
| |
| #include "common.h" |
| |
| /* Length of comparison data buffers in units of items */ |
| #define BUFLEN 65536 |
| |
| static const char * progname = NULL ; |
| static char * filename1 = NULL, * filename2 = NULL ; |
| |
| static int |
| comparison_error (const char * what, sf_count_t frame_offset) |
| { char buffer [128] = "" ; |
| |
| if (frame_offset >= 0) |
| snprintf (buffer, sizeof (buffer), " (at frame offset %" PRId64 ")", frame_offset) ; |
| |
| printf ("%s: %s of files %s and %s differ%s.\n", progname, what, filename1, filename2, buffer) ; |
| return 1 ; |
| } /* comparison_error */ |
| |
| static int |
| compare (void) |
| { |
| double buf1 [BUFLEN], buf2 [BUFLEN] ; |
| SF_INFO sfinfo1, sfinfo2 ; |
| SNDFILE * sf1 = NULL, * sf2 = NULL ; |
| sf_count_t items, i, nread1, nread2, offset = 0 ; |
| int retval = 0 ; |
| |
| memset (&sfinfo1, 0, sizeof (SF_INFO)) ; |
| sf1 = sf_open (filename1, SFM_READ, &sfinfo1) ; |
| if (sf1 == NULL) |
| { printf ("Error opening %s.\n", filename1) ; |
| retval = 1 ; |
| goto out ; |
| } ; |
| |
| memset (&sfinfo2, 0, sizeof (SF_INFO)) ; |
| sf2 = sf_open (filename2, SFM_READ, &sfinfo2) ; |
| if (sf2 == NULL) |
| { printf ("Error opening %s.\n", filename2) ; |
| retval = 1 ; |
| goto out ; |
| } ; |
| |
| if (sfinfo1.samplerate != sfinfo2.samplerate) |
| { retval = comparison_error ("Samplerates", -1) ; |
| goto out ; |
| } ; |
| |
| if (sfinfo1.channels != sfinfo2.channels) |
| { retval = comparison_error ("Number of channels", -1) ; |
| goto out ; |
| } ; |
| |
| /* Calculate the framecount that will fit in our data buffers */ |
| items = BUFLEN / sfinfo1.channels ; |
| |
| while ( (nread1 = sf_readf_double (sf1, buf1, items)) > 0) |
| { nread2 = sf_readf_double (sf2, buf2, nread1) ; |
| if (nread2 != nread1) |
| { retval = comparison_error ("PCM data lengths", -1) ; |
| goto out ; |
| } ; |
| for (i = 0 ; i < nread1 * sfinfo1.channels ; i++) |
| { if (buf1 [i] != buf2 [i]) |
| { retval = comparison_error ("PCM data", offset + i / sfinfo1.channels) ; |
| goto out ; |
| } ; |
| } ; |
| offset += nread1 ; |
| } ; |
| |
| if ( (nread2 = sf_readf_double (sf2, buf2, nread1)) != 0) |
| { retval = comparison_error ("PCM data lengths", -1) ; |
| goto out ; |
| } ; |
| |
| out : |
| sf_close (sf1) ; |
| sf_close (sf2) ; |
| |
| return retval ; |
| } /* compare */ |
| |
| 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 |
| usage_exit (void) |
| { |
| print_version () ; |
| |
| printf ("Usage : %s <filename> <filename>\n", progname) ; |
| printf (" Compare the PCM data of two sound files.\n\n") ; |
| exit (0) ; |
| } /* usage_exit */ |
| |
| int |
| main (int argc, char *argv []) |
| { |
| progname = program_name (argv [0]) ; |
| |
| if (argc != 3) |
| { usage_exit () ; |
| return 1 ; |
| } ; |
| |
| filename1 = argv [argc - 2] ; |
| filename2 = argv [argc - 1] ; |
| |
| if (strcmp (filename1, filename2) == 0) |
| { printf ("Error : Input filenames are the same.\n\n") ; |
| usage_exit () ; |
| return 1 ; |
| } ; |
| |
| return compare () ; |
| } /* main */ |