dither_test.c
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上传日期:2022-01-05
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文件大小:5k
- /*
- ** Copyright (C) 2003-2009 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 <unistd.h>
- #include <string.h>
- #include <math.h>
- #include <sndfile.h>
- #include "utils.h"
- #define BUFFER_LEN (1<<16)
- #define LOG_BUFFER_SIZE 1024
- static void dither_test (const char *filename, int filetype) ;
- /* Force the start of this buffer to be double aligned. Sparc-solaris will
- ** choke if its not.
- */
- static short data_out [BUFFER_LEN] ;
- int
- main (int argc, char *argv [])
- { int do_all = 0 ;
- int test_count = 0 ;
- if (argc != 2)
- { printf ("Usage : %s <test>n", argv [0]) ;
- printf (" Where <test> is one of the following:n") ;
- printf (" wav - test WAV file peak chunkn") ;
- printf (" aiff - test AIFF file PEAK chunkn") ;
- printf (" all - perform all testsn") ;
- exit (1) ;
- } ;
- do_all=!strcmp (argv [1], "all") ;
- if (do_all || ! strcmp (argv [1], "wav"))
- { dither_test ("dither.wav", SF_FORMAT_WAV | SF_FORMAT_PCM_U8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "aiff"))
- { dither_test ("dither.aiff", SF_FORMAT_AIFF | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "au"))
- { dither_test ("dither.au", SF_FORMAT_AU | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "svx"))
- { dither_test ("dither.svx", SF_FORMAT_SVX | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "nist"))
- { dither_test ("dither.nist", SF_FORMAT_NIST | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "paf"))
- { dither_test ("dither.paf", SF_FORMAT_PAF | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "ircam"))
- { dither_test ("dither.ircam", SF_FORMAT_IRCAM | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "voc"))
- { dither_test ("dither.voc", SF_FORMAT_VOC | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "w64"))
- { dither_test ("dither.w64", SF_FORMAT_W64 | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "mat4"))
- { dither_test ("dither.mat4", SF_FORMAT_MAT4 | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "mat5"))
- { dither_test ("dither.mat5", SF_FORMAT_MAT5 | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (do_all || ! strcmp (argv [1], "pvf"))
- { dither_test ("dither.pvf", SF_FORMAT_PVF | SF_FORMAT_PCM_S8) ;
- test_count++ ;
- } ;
- if (test_count == 0)
- { printf ("Mono : ************************************n") ;
- printf ("Mono : * No '%s' test defined.n", argv [1]) ;
- printf ("Mono : ************************************n") ;
- return 1 ;
- } ;
- return 0 ;
- } /* main */
- /*============================================================================================
- ** Here are the test functions.
- */
- static void
- dither_test (const char *filename, int filetype)
- { SNDFILE *file ;
- SF_INFO sfinfo ;
- SF_DITHER_INFO dither ;
- filetype = filetype ;
- print_test_name ("dither_test", filename) ;
- sfinfo.samplerate = 44100 ;
- sfinfo.format = filetype ;
- sfinfo.channels = 1 ;
- sfinfo.frames = 0 ;
- file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;
- /* Check for old version of the dither API. */
- if (sf_command (file, SFC_SET_DITHER_ON_WRITE, NULL, SF_TRUE) == 0)
- { printf ("nnLine %d: Should have an error here but don't.nn", __LINE__) ;
- exit (1) ;
- } ;
- memset (&dither, 0, sizeof (dither)) ;
- dither.type = SFD_WHITE ;
- dither.level = 0 ;
- if (sf_command (file, SFC_SET_DITHER_ON_WRITE, &dither, sizeof (dither)) != 0)
- { printf ("nnLine %d: sf_command (SFC_SET_DITHER_ON_WRITE) returned error : %snn",
- __LINE__, sf_strerror (file)) ;
- exit (1) ;
- } ;
- /* Write data to file. */
- test_write_short_or_die (file, 0, data_out, BUFFER_LEN, __LINE__) ;
- test_seek_or_die (file, 0, SEEK_SET, 0, sfinfo.channels, __LINE__) ;
- sf_close (file) ;
- file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
- if (sfinfo.frames != BUFFER_LEN)
- { printf ("nnLine %d: Bad frame count %d (should be %d)nn", __LINE__, (int) sfinfo.frames, BUFFER_LEN) ;
- } ;
- sf_close (file) ;
- /*-unlink (filename) ;-*/
- puts ("ok") ;
- } /* dither_test */