+++ /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 PVF1_MARKER (MAKE_MARKER ('P', 'V', 'F', '1'))
-
-/*------------------------------------------------------------------------------
-** Private static functions.
-*/
-
-static int pvf_close (SF_PRIVATE *psf) ;
-
-static int pvf_write_header (SF_PRIVATE *psf, int calc_length) ;
-static int pvf_read_header (SF_PRIVATE *psf) ;
-
-/*------------------------------------------------------------------------------
-** Public function.
-*/
-
-int
-pvf_open (SF_PRIVATE *psf)
-{ int subformat ;
- int error = 0 ;
-
- if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
- { if ((error = pvf_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_PVF)
- return SFE_BAD_OPEN_FORMAT ;
-
- psf->endian = SF_ENDIAN_BIG ;
-
- if (pvf_write_header (psf, SF_FALSE))
- return psf->error ;
-
- psf->write_header = pvf_write_header ;
- } ;
-
- psf->container_close = pvf_close ;
-
- psf->blockwidth = psf->bytewidth * psf->sf.channels ;
-
- switch (subformat)
- { case SF_FORMAT_PCM_S8 : /* 8-bit linear PCM. */
- case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */
- case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */
- error = pcm_init (psf) ;
- break ;
-
- default : break ;
- } ;
-
- return error ;
-} /* pvf_open */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-pvf_close (SF_PRIVATE * UNUSED (psf))
-{
- return 0 ;
-} /* pvf_close */
-
-static int
-pvf_write_header (SF_PRIVATE *psf, int UNUSED (calc_length))
-{ sf_count_t current ;
-
- if (psf->pipeoffset > 0)
- return 0 ;
-
- current = psf_ftell (psf) ;
-
- /* Reset the current header length to zero. */
- psf->header [0] = 0 ;
- psf->headindex = 0 ;
-
- if (psf->is_pipe == SF_FALSE)
- psf_fseek (psf, 0, SEEK_SET) ;
-
- snprintf ((char*) psf->header, sizeof (psf->header), "PVF1\n%d %d %d\n",
- psf->sf.channels, psf->sf.samplerate, psf->bytewidth * 8) ;
-
- psf->headindex = strlen ((char*) psf->header) ;
-
- /* 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 ;
-} /* pvf_write_header */
-
-static int
-pvf_read_header (SF_PRIVATE *psf)
-{ char buffer [32] ;
- int marker, channels, samplerate, bitwidth ;
-
- psf_binheader_readf (psf, "pmj", 0, &marker, 1) ;
- psf_log_printf (psf, "%M\n", marker) ;
-
- if (marker != PVF1_MARKER)
- return SFE_PVF_NO_PVF1 ;
-
- /* Grab characters up until a newline which is replaced by an EOS. */
- psf_binheader_readf (psf, "G", buffer, sizeof (buffer)) ;
-
- if (sscanf (buffer, "%d %d %d", &channels, &samplerate, &bitwidth) != 3)
- return SFE_PVF_BAD_HEADER ;
-
- psf_log_printf (psf, " Channels : %d\n Sample rate : %d\n Bit width : %d\n",
- channels, samplerate, bitwidth) ;
-
- psf->sf.channels = channels ;
- psf->sf.samplerate = samplerate ;
-
- switch (bitwidth)
- { case 8 :
- psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_S8 ;
- psf->bytewidth = 1 ;
- break ;
-
- case 16 :
- psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_16 ;
- psf->bytewidth = 2 ;
- break ;
- case 32 :
- psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_32 ;
- psf->bytewidth = 4 ;
- break ;
-
- default :
- return SFE_PVF_BAD_BITWIDTH ;
- } ;
-
- psf->dataoffset = psf_ftell (psf) ;
- psf_log_printf (psf, " Data Offset : %D\n", psf->dataoffset) ;
-
- 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 ;
-} /* pvf_read_header */
projects / Faustine.git / blobdiff
