+++ /dev/null
-/*
-** Copyright (C) 2002-2011 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.
-*/
-
-#include "sfconfig.h"
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <string.h>
-#include <ctype.h>
-
-#include "sndfile.h"
-#include "sfendian.h"
-#include "common.h"
-
-/*------------------------------------------------------------------------------
-** Macros to handle big/little endian issues.
-*/
-
-#define SFE_HTK_BAD_FILE_LEN 1666
-#define SFE_HTK_NOT_WAVEFORM 1667
-
-/*------------------------------------------------------------------------------
-** Private static functions.
-*/
-
-static int htk_close (SF_PRIVATE *psf) ;
-
-static int htk_write_header (SF_PRIVATE *psf, int calc_length) ;
-static int htk_read_header (SF_PRIVATE *psf) ;
-
-/*------------------------------------------------------------------------------
-** Public function.
-*/
-
-int
-htk_open (SF_PRIVATE *psf)
-{ int subformat ;
- int error = 0 ;
-
- if (psf->is_pipe)
- return SFE_HTK_NO_PIPE ;
-
- if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
- { if ((error = htk_read_header (psf)))
- return error ;
- } ;
-
- subformat = SF_CODEC (psf->sf.format) ;
-
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_HTK)
- return SFE_BAD_OPEN_FORMAT ;
-
- psf->endian = SF_ENDIAN_BIG ;
-
- if (htk_write_header (psf, SF_FALSE))
- return psf->error ;
-
- psf->write_header = htk_write_header ;
- } ;
-
- psf->container_close = htk_close ;
-
- psf->blockwidth = psf->bytewidth * psf->sf.channels ;
-
- switch (subformat)
- { case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */
- error = pcm_init (psf) ;
- break ;
-
- default : break ;
- } ;
-
- return error ;
-} /* htk_open */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-htk_close (SF_PRIVATE *psf)
-{
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- htk_write_header (psf, SF_TRUE) ;
-
- return 0 ;
-} /* htk_close */
-
-static int
-htk_write_header (SF_PRIVATE *psf, int calc_length)
-{ sf_count_t current ;
- int sample_count, sample_period ;
-
- current = psf_ftell (psf) ;
-
- if (calc_length)
- psf->filelength = psf_get_filelen (psf) ;
-
- /* Reset the current header length to zero. */
- psf->header [0] = 0 ;
- psf->headindex = 0 ;
- psf_fseek (psf, 0, SEEK_SET) ;
-
- if (psf->filelength > 12)
- sample_count = (psf->filelength - 12) / 2 ;
- else
- sample_count = 0 ;
-
- sample_period = 10000000 / psf->sf.samplerate ;
-
- psf_binheader_writef (psf, "E444", sample_count, sample_period, 0x20000) ;
-
- /* Header construction complete so write it out. */
- psf_fwrite (psf->header, psf->headindex, 1, psf) ;
-
- if (psf->error)
- return psf->error ;
-
- psf->dataoffset = psf->headindex ;
-
- if (current > 0)
- psf_fseek (psf, current, SEEK_SET) ;
-
- return psf->error ;
-} /* htk_write_header */
-
-/*
-** Found the following info in a comment block within Bill Schottstaedt's
-** sndlib library.
-**
-** HTK format files consist of a contiguous sequence of samples preceded by a
-** header. Each sample is a vector of either 2-byte integers or 4-byte floats.
-** 2-byte integers are used for compressed forms as described below and for
-** vector quantised data as described later in section 5.11. HTK format data
-** files can also be used to store speech waveforms as described in section 5.8.
-**
-** The HTK file format header is 12 bytes long and contains the following data
-** nSamples -- number of samples in file (4-byte integer)
-** sampPeriod -- sample period in 100ns units (4-byte integer)
-** sampSize -- number of bytes per sample (2-byte integer)
-** parmKind -- a code indicating the sample kind (2-byte integer)
-**
-** The parameter kind consists of a 6 bit code representing the basic
-** parameter kind plus additional bits for each of the possible qualifiers.
-** The basic parameter kind codes are
-**
-** 0 WAVEFORM sampled waveform
-** 1 LPC linear prediction filter coefficients
-** 2 LPREFC linear prediction reflection coefficients
-** 3 LPCEPSTRA LPC cepstral coefficients
-** 4 LPDELCEP LPC cepstra plus delta coefficients
-** 5 IREFC LPC reflection coef in 16 bit integer format
-** 6 MFCC mel-frequency cepstral coefficients
-** 7 FBANK log mel-filter bank channel outputs
-** 8 MELSPEC linear mel-filter bank channel outputs
-** 9 USER user defined sample kind
-** 10 DISCRETE vector quantised data
-**
-** and the bit-encoding for the qualifiers (in octal) is
-** _E 000100 has energy
-** _N 000200 absolute energy suppressed
-** _D 000400 has delta coefficients
-** _A 001000 has acceleration coefficients
-** _C 002000 is compressed
-** _Z 004000 has zero mean static coef.
-** _K 010000 has CRC checksum
-** _O 020000 has 0'th cepstral coef.
-*/
-
-static int
-htk_read_header (SF_PRIVATE *psf)
-{ int sample_count, sample_period, marker ;
-
- psf_binheader_readf (psf, "pE444", 0, &sample_count, &sample_period, &marker) ;
-
- if (2 * sample_count + 12 != psf->filelength)
- return SFE_HTK_BAD_FILE_LEN ;
-
- if (marker != 0x20000)
- return SFE_HTK_NOT_WAVEFORM ;
-
- psf->sf.channels = 1 ;
-
- if (sample_period > 0)
- { psf->sf.samplerate = 10000000 / sample_period ;
- psf_log_printf (psf, "HTK Waveform file\n Sample Count : %d\n Sample Period : %d => %d Hz\n",
- sample_count, sample_period, psf->sf.samplerate) ;
- }
- else
- { psf->sf.samplerate = 16000 ;
- psf_log_printf (psf, "HTK Waveform file\n Sample Count : %d\n Sample Period : %d (should be > 0) => Guessed sample rate %d Hz\n",
- sample_count, sample_period, psf->sf.samplerate) ;
- } ;
-
- psf->sf.format = SF_FORMAT_HTK | SF_FORMAT_PCM_16 ;
- psf->bytewidth = 2 ;
-
- /* HTK always has a 12 byte header. */
- psf->dataoffset = 12 ;
- psf->endian = SF_ENDIAN_BIG ;
-
- psf->datalength = psf->filelength - psf->dataoffset ;
-
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- if (! psf->sf.frames && psf->blockwidth)
- psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
-
- return 0 ;
-} /* htk_read_header */
-
projects / Faustine.git / blobdiff