X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpretor/lib/src/libsndfile-1.0.25/tests/alaw_test.c diff --git a/interpretor/lib/src/libsndfile-1.0.25/tests/alaw_test.c b/interpretor/lib/src/libsndfile-1.0.25/tests/alaw_test.c deleted file mode 100644 index e25101d..0000000 --- a/interpretor/lib/src/libsndfile-1.0.25/tests/alaw_test.c +++ /dev/null @@ -1,236 +0,0 @@ -/* -** Copyright (C) 1999-2011 Erik de Castro Lopo -** -** 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 "sfconfig.h" - -#include -#include -#include - -#if HAVE_UNISTD_H -#include -#endif - -#include - -#include "utils.h" - -#define BUFFER_SIZE (65536) - -static unsigned char alaw_encode (int sample) ; -static int alaw_decode (unsigned int alawbyte) ; - -static short short_buffer [BUFFER_SIZE] ; -static unsigned char alaw_buffer [BUFFER_SIZE] ; - -int -main (void) -{ SNDFILE *file ; - SF_INFO sfinfo ; - const char *filename ; - int k ; - - print_test_name ("alaw_test", "encoder") ; - - filename = "test.raw" ; - - sf_info_setup (&sfinfo, SF_FORMAT_RAW | SF_FORMAT_ALAW, 44100, 1) ; - - if ((file = sf_open (filename, SFM_WRITE, &sfinfo)) == NULL) - { printf ("sf_open_write failed with error : ") ; - fflush (stdout) ; - puts (sf_strerror (NULL)) ; - exit (1) ; - } ; - - /* Generate a file containing all possible 16 bit sample values - ** and write it to disk as alaw encoded.frames. - */ - - for (k = 0 ; k < 0x10000 ; k++) - short_buffer [k] = k & 0xFFFF ; - - sf_write_short (file, short_buffer, BUFFER_SIZE) ; - sf_close (file) ; - - /* Now open that file and compare the alaw encoded sample values - ** with what they should be. - */ - - if ((file = sf_open (filename, SFM_READ, &sfinfo)) == NULL) - { printf ("sf_open_write failed with error : ") ; - puts (sf_strerror (NULL)) ; - exit (1) ; - } ; - - check_log_buffer_or_die (file, __LINE__) ; - - if (sf_read_raw (file, alaw_buffer, BUFFER_SIZE) != BUFFER_SIZE) - { printf ("sf_read_raw : ") ; - puts (sf_strerror (file)) ; - exit (1) ; - } ; - - for (k = 0 ; k < 0x10000 ; k++) - if (alaw_encode (short_buffer [k]) != alaw_buffer [k]) - { printf ("Encoder error : sample #%d (0x%02X should be 0x%02X)\n", k, alaw_buffer [k], alaw_encode (short_buffer [k])) ; - exit (1) ; - } ; - - sf_close (file) ; - - puts ("ok") ; - - print_test_name ("alaw_test", "decoder") ; - /* Now generate a file containing all possible 8 bit encoded - ** sample values and write it to disk as alaw encoded.frames. - */ - - if (! (file = sf_open (filename, SFM_WRITE, &sfinfo))) - { printf ("sf_open_write failed with error : ") ; - puts (sf_strerror (NULL)) ; - exit (1) ; - } ; - - for (k = 0 ; k < 256 ; k++) - alaw_buffer [k] = k & 0xFF ; - - sf_write_raw (file, alaw_buffer, 256) ; - sf_close (file) ; - - /* Now open that file and compare the alaw decoded sample values - ** with what they should be. - */ - - if (! (file = sf_open (filename, SFM_READ, &sfinfo))) - { printf ("sf_open_write failed with error : ") ; - puts (sf_strerror (NULL)) ; - exit (1) ; - } ; - - check_log_buffer_or_die (file, __LINE__) ; - - if (sf_read_short (file, short_buffer, 256) != 256) - { printf ("sf_read_short : ") ; - puts (sf_strerror (file)) ; - exit (1) ; - } ; - - - for (k = 0 ; k < 256 ; k++) - if (short_buffer [k] != alaw_decode (alaw_buffer [k])) - { printf ("Decoder error : sample #%d (0x%02X should be 0x%02X)\n", k, short_buffer [k], alaw_decode (alaw_buffer [k])) ; - exit (1) ; - } ; - - sf_close (file) ; - - puts ("ok") ; - - unlink (filename) ; - - return 0 ; -} /* main */ - - -/*================================================================================= -** The following routines came from the sox-12.15 (Sound eXcahcnge) distribution. -** -** This code is not compiled into libsndfile. It is only used to test the -** libsndfile lookup tables for correctness. -** -** I have included the original authors comments. -*/ - -/* -** A-law routines by Graeme W. Gill. -** Date: 93/5/7 -** -** References: -** 1) CCITT Recommendation G.711 -** -*/ - -#define ACLIP 31744 - -static -unsigned char alaw_encode (int sample) -{ static int exp_lut [128] = - { 1, 1, 2, 2, 3, 3, 3, 3, - 4, 4, 4, 4, 4, 4, 4, 4, - 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, - 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7 - } ; - - int sign, exponent, mantissa ; - unsigned char Alawbyte ; - - /* Get the sample into sign-magnitude. */ - sign = ((~sample) >> 8) & 0x80 ; /* set aside the sign */ - if (sign == 0) - sample = -sample ; /* get magnitude */ - if (sample > ACLIP) - sample = ACLIP ; /* clip the magnitude */ - - /* Convert from 16 bit linear to ulaw. */ - if (sample >= 256) - { exponent = exp_lut [(sample >> 8) & 0x7F] ; - mantissa = ( sample >> ( exponent + 3 ) ) & 0x0F ; - Alawbyte = ((exponent << 4) | mantissa) ; - } - else - Alawbyte = (sample >> 4) ; - - Alawbyte ^= (sign ^ 0x55) ; - - return Alawbyte ; -} /* alaw_encode */ - -static -int alaw_decode (unsigned int Alawbyte) -{ static int exp_lut [8] = { 0, 264, 528, 1056, 2112, 4224, 8448, 16896 } ; - int sign, exponent, mantissa, sample ; - - Alawbyte ^= 0x55 ; - sign = (Alawbyte & 0x80) ; - Alawbyte &= 0x7f ; /* get magnitude */ - if (Alawbyte >= 16) - { exponent = (Alawbyte >> 4 ) & 0x07 ; - mantissa = Alawbyte & 0x0F ; - sample = exp_lut [exponent] + (mantissa << ( exponent + 3 )) ; - } - else - sample = (Alawbyte << 4) + 8 ; - if (sign == 0) - sample = -sample ; - - return sample ; -} /* alaw_decode */ -