diff options
Diffstat (limited to 'libs/libsndfile/src/nist.c')
| -rw-r--r-- | libs/libsndfile/src/nist.c | 367 |
1 files changed, 0 insertions, 367 deletions
diff --git a/libs/libsndfile/src/nist.c b/libs/libsndfile/src/nist.c deleted file mode 100644 index 2ab20dbf96..0000000000 --- a/libs/libsndfile/src/nist.c +++ /dev/null @@ -1,367 +0,0 @@ -/* -** Copyright (C) 1999-2004 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 Lesser General Public License as published by -** the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. -** -** You should have received a copy of the GNU Lesser 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. -*/ - -/* -** Some of the information used to read NIST files was gleaned from -** reading the code of Bill Schottstaedt's sndlib library -** ftp://ccrma-ftp.stanford.edu/pub/Lisp/sndlib.tar.gz -** However, no code from that package was used. -*/ - -#include "sfconfig.h" - -#include <stdio.h> -#include <fcntl.h> -#include <string.h> -#include <ctype.h> - -#include "sndfile.h" -#include "sfendian.h" -#include "common.h" - -/*------------------------------------------------------------------------------ -*/ - -#define NIST_HEADER_LENGTH 1024 - -/*------------------------------------------------------------------------------ -** Private static functions. -*/ - -static int nist_close (SF_PRIVATE *psf) ; -static int nist_write_header (SF_PRIVATE *psf, int calc_length) ; -static int nist_read_header (SF_PRIVATE *psf) ; - -/*------------------------------------------------------------------------------ -*/ - -int -nist_open (SF_PRIVATE *psf) -{ int error ; - - if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0)) - { if ((error = nist_read_header (psf))) - return error ; - } ; - - if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR) - { if (psf->is_pipe) - return SFE_NO_PIPE_WRITE ; - - if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_NIST) - return SFE_BAD_OPEN_FORMAT ; - - psf->endian = psf->sf.format & SF_FORMAT_ENDMASK ; - if (psf->endian == 0 || psf->endian == SF_ENDIAN_CPU) - psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ; - - psf->blockwidth = psf->bytewidth * psf->sf.channels ; - psf->sf.frames = 0 ; - - if ((error = nist_write_header (psf, SF_FALSE))) - return error ; - - psf->write_header = nist_write_header ; - } ; - - psf->container_close = nist_close ; - - switch (psf->sf.format & SF_FORMAT_SUBMASK) - { case SF_FORMAT_PCM_S8 : - error = pcm_init (psf) ; - break ; - - case SF_FORMAT_PCM_16 : - case SF_FORMAT_PCM_24 : - case SF_FORMAT_PCM_32 : - error = pcm_init (psf) ; - break ; - - case SF_FORMAT_ULAW : - error = ulaw_init (psf) ; - break ; - - case SF_FORMAT_ALAW : - error = alaw_init (psf) ; - break ; - - default : error = SFE_UNIMPLEMENTED ; - break ; - } ; - - return error ; -} /* nist_open */ - -/*------------------------------------------------------------------------------ -*/ - -static char bad_header [] = -{ 'N', 'I', 'S', 'T', '_', '1', 'A', 0x0d, 0x0a, - ' ', ' ', ' ', '1', '0', '2', '4', 0x0d, 0x0a, - 0 -} ; - - static int -nist_read_header (SF_PRIVATE *psf) -{ char *psf_header ; - int bitwidth = 0, bytes = 0, count, encoding ; - char str [64], *cptr ; - long samples ; - - psf->sf.format = SF_FORMAT_NIST ; - - psf_header = psf->u.cbuf ; - - if (sizeof (psf->header) <= NIST_HEADER_LENGTH) - return SFE_INTERNAL ; - - /* Go to start of file and read in the whole header. */ - psf_binheader_readf (psf, "pb", 0, psf_header, NIST_HEADER_LENGTH) ; - - /* Header is a string, so make sure it is null terminated. */ - psf_header [NIST_HEADER_LENGTH] = 0 ; - - /* Now trim the header after the end marker. */ - if ((cptr = strstr (psf_header, "end_head"))) - { cptr += strlen ("end_head") + 1 ; - cptr [0] = 0 ; - } ; - - if (strstr (psf_header, bad_header) == psf_header) - return SFE_NIST_CRLF_CONVERISON ; - - /* Make sure its a NIST file. */ - if (strstr (psf_header, "NIST_1A\n") != psf_header) - { psf_log_printf (psf, "Not a NIST file.\n") ; - return SFE_NIST_BAD_HEADER ; - } ; - - if (sscanf (psf_header, "NIST_1A\n%d\n", &count) == 1) - psf->dataoffset = count ; - else - { psf_log_printf (psf, "*** Suspicious header length.\n") ; - psf->dataoffset = NIST_HEADER_LENGTH ; - } ; - - /* Determine sample encoding, start by assuming PCM. */ - encoding = SF_FORMAT_PCM_U8 ; - if ((cptr = strstr (psf_header, "sample_coding -s"))) - { sscanf (cptr, "sample_coding -s%d %63s", &count, str) ; - - if (strcmp (str, "pcm") == 0) - encoding = SF_FORMAT_PCM_U8 ; - else if (strcmp (str, "alaw") == 0) - encoding = SF_FORMAT_ALAW ; - else if ((strcmp (str, "ulaw") == 0) || (strcmp (str, "mu-law") == 0)) - encoding = SF_FORMAT_ULAW ; - else - { psf_log_printf (psf, "*** Unknown encoding : %s\n", str) ; - encoding = 0 ; - } ; - } ; - - if ((cptr = strstr (psf_header, "channel_count -i "))) - sscanf (cptr, "channel_count -i %d", &(psf->sf.channels)) ; - - if ((cptr = strstr (psf_header, "sample_rate -i "))) - sscanf (cptr, "sample_rate -i %d", &(psf->sf.samplerate)) ; - - if ((cptr = strstr (psf_header, "sample_count -i "))) - { sscanf (psf_header, "sample_count -i %ld", &samples) ; - psf->sf.frames = samples ; - } ; - - if ((cptr = strstr (psf_header, "sample_n_bytes -i "))) - sscanf (cptr, "sample_n_bytes -i %d", &(psf->bytewidth)) ; - - /* Default endian-ness (for 8 bit, u-law, A-law. */ - psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ; - - /* This is where we figure out endian-ness. */ - if ((cptr = strstr (psf_header, "sample_byte_format -s"))) - { sscanf (cptr, "sample_byte_format -s%d %8s", &bytes, str) ; - if (bytes > 1) - { if (psf->bytewidth == 0) - psf->bytewidth = bytes ; - else if (psf->bytewidth != bytes) - { psf_log_printf (psf, "psf->bytewidth (%d) != bytes (%d)\n", psf->bytewidth, bytes) ; - return SFE_NIST_BAD_ENCODING ; - } ; - - if (strstr (str, "01") == str) - psf->endian = SF_ENDIAN_LITTLE ; - else if (strstr (str, "10")) - psf->endian = SF_ENDIAN_BIG ; - else - { psf_log_printf (psf, "Weird endian-ness : %s\n", str) ; - return SFE_NIST_BAD_ENCODING ; - } ; - } ; - - psf->sf.format |= psf->endian ; - } ; - - if ((cptr = strstr (psf_header, "sample_sig_bits -i "))) - sscanf (cptr, "sample_sig_bits -i %d", &bitwidth) ; - - if (strstr (psf_header, "channels_interleaved -s5 FALSE")) - { psf_log_printf (psf, "Non-interleaved data unsupported.\n", str) ; - return SFE_NIST_BAD_ENCODING ; - } ; - - psf->blockwidth = psf->sf.channels * psf->bytewidth ; - psf->datalength = psf->filelength - psf->dataoffset ; - - psf_fseek (psf, psf->dataoffset, SEEK_SET) ; - - if (encoding == SF_FORMAT_PCM_U8) - { switch (psf->bytewidth) - { case 1 : - psf->sf.format |= SF_FORMAT_PCM_S8 ; - break ; - - case 2 : - psf->sf.format |= SF_FORMAT_PCM_16 ; - break ; - - case 3 : - psf->sf.format |= SF_FORMAT_PCM_24 ; - break ; - - case 4 : - psf->sf.format |= SF_FORMAT_PCM_32 ; - break ; - - default : break ; - } ; - } - else if (encoding != 0) - psf->sf.format |= encoding ; - else - return SFE_UNIMPLEMENTED ; - - return 0 ; -} /* nist_read_header */ - -static int -nist_close (SF_PRIVATE *psf) -{ - if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR) - nist_write_header (psf, SF_TRUE) ; - - return 0 ; -} /* nist_close */ - -/*========================================================================= -*/ - -static int -nist_write_header (SF_PRIVATE *psf, int calc_length) -{ const char *end_str ; - long samples ; - sf_count_t current ; - - current = psf_ftell (psf) ; - - if (calc_length) - { psf->filelength = psf_get_filelen (psf) ; - - psf->datalength = psf->filelength - psf->dataoffset ; - - if (psf->dataend) - psf->datalength -= psf->filelength - psf->dataend ; - - if (psf->bytewidth > 0) - psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ; - } ; - - if (psf->endian == SF_ENDIAN_BIG) - end_str = "10" ; - else if (psf->endian == SF_ENDIAN_LITTLE) - end_str = "01" ; - else - end_str = "error" ; - - /* Clear the whole header. */ - memset (psf->header, 0, sizeof (psf->header)) ; - psf->headindex = 0 ; - - psf_fseek (psf, 0, SEEK_SET) ; - - psf_asciiheader_printf (psf, "NIST_1A\n 1024\n") ; - psf_asciiheader_printf (psf, "channel_count -i %d\n", psf->sf.channels) ; - psf_asciiheader_printf (psf, "sample_rate -i %d\n", psf->sf.samplerate) ; - - switch (psf->sf.format & SF_FORMAT_SUBMASK) - { case SF_FORMAT_PCM_S8 : - psf_asciiheader_printf (psf, "sample_coding -s3 pcm\n") ; - psf_asciiheader_printf (psf, "sample_n_bytes -i 1\n" - "sample_sig_bits -i 8\n") ; - break ; - - case SF_FORMAT_PCM_16 : - case SF_FORMAT_PCM_24 : - case SF_FORMAT_PCM_32 : - psf_asciiheader_printf (psf, "sample_n_bytes -i %d\n", psf->bytewidth) ; - psf_asciiheader_printf (psf, "sample_sig_bits -i %d\n", psf->bytewidth * 8) ; - psf_asciiheader_printf (psf, "sample_coding -s3 pcm\n" - "sample_byte_format -s%d %s\n", psf->bytewidth, end_str) ; - break ; - - case SF_FORMAT_ALAW : - psf_asciiheader_printf (psf, "sample_coding -s4 alaw\n") ; - psf_asciiheader_printf (psf, "sample_n_bytes -s1 1\n") ; - break ; - - case SF_FORMAT_ULAW : - psf_asciiheader_printf (psf, "sample_coding -s4 ulaw\n") ; - psf_asciiheader_printf (psf, "sample_n_bytes -s1 1\n") ; - break ; - - default : return SFE_UNIMPLEMENTED ; - } ; - - psf->dataoffset = NIST_HEADER_LENGTH ; - - /* Fix this */ - samples = psf->sf.frames ; - psf_asciiheader_printf (psf, "sample_count -i %ld\n", samples) ; - psf_asciiheader_printf (psf, "end_head\n") ; - - /* Zero fill to dataoffset. */ - psf_binheader_writef (psf, "z", (size_t) (NIST_HEADER_LENGTH - psf->headindex)) ; - - psf_fwrite (psf->header, psf->headindex, 1, psf) ; - - if (psf->error) - return psf->error ; - - if (current > 0) - psf_fseek (psf, current, SEEK_SET) ; - - return psf->error ; -} /* nist_write_header */ - - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: b45ed85d-9e22-4ad9-b78c-4b58b67152a8 -*/ |