/src/libsndfile/src/au.c

Source
/*
** Copyright (C) 1999-2017 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 DOTSND_MARKER (MAKE_MARKER ('.', 's', 'n', 'd'))
#define DNSDOT_MARKER (MAKE_MARKER ('d', 'n', 's', '.'))

#define AU_DATA_OFFSET  24

/*------------------------------------------------------------------------------
** Known AU file encoding types.
*/

enum
{ AU_ENCODING_ULAW_8          = 1,  /* 8-bit u-law samples */
  AU_ENCODING_PCM_8         = 2,  /* 8-bit linear samples */
  AU_ENCODING_PCM_16          = 3,  /* 16-bit linear samples */
  AU_ENCODING_PCM_24          = 4,  /* 24-bit linear samples */
  AU_ENCODING_PCM_32          = 5,  /* 32-bit linear samples */

  AU_ENCODING_FLOAT         = 6,  /* floating-point samples */
  AU_ENCODING_DOUBLE          = 7,  /* double-precision float samples */
  AU_ENCODING_INDIRECT        = 8,  /* fragmented sampled data */
  AU_ENCODING_NESTED          = 9,  /* ? */
  AU_ENCODING_DSP_CORE        = 10, /* DSP program */
  AU_ENCODING_DSP_DATA_8        = 11, /* 8-bit fixed-point samples */
  AU_ENCODING_DSP_DATA_16       = 12, /* 16-bit fixed-point samples */
  AU_ENCODING_DSP_DATA_24       = 13, /* 24-bit fixed-point samples */
  AU_ENCODING_DSP_DATA_32       = 14, /* 32-bit fixed-point samples */

  AU_ENCODING_DISPLAY         = 16, /* non-audio display data */
  AU_ENCODING_MULAW_SQUELCH     = 17, /* ? */
  AU_ENCODING_EMPHASIZED        = 18, /* 16-bit linear with emphasis */
  AU_ENCODING_NEXT          = 19, /* 16-bit linear with compression (NEXT) */
  AU_ENCODING_COMPRESSED_EMPHASIZED = 20, /* A combination of the two above */
  AU_ENCODING_DSP_COMMANDS      = 21, /* Music Kit DSP commands */
  AU_ENCODING_DSP_COMMANDS_SAMPLES  = 22, /* ? */

  AU_ENCODING_ADPCM_G721_32     = 23, /* G721 32 kbs ADPCM - 4 bits per sample. */
  AU_ENCODING_ADPCM_G722        = 24, /* G722 64 kbs ADPCM */
  AU_ENCODING_ADPCM_G723_24     = 25, /* G723 24 kbs ADPCM - 3 bits per sample. */
  AU_ENCODING_ADPCM_G723_40     = 26, /* G723 40 kbs ADPCM - 5 bits per sample. */

  AU_ENCODING_ALAW_8          = 27
} ;

/*------------------------------------------------------------------------------
** Typedefs.
*/

typedef struct
{ int   dataoffset ;
  int   datasize ;
  int   encoding ;
  int   samplerate ;
  int   channels ;
} AU_FMT ;


/*------------------------------------------------------------------------------
** Private static functions.
*/

static  int   au_close    (SF_PRIVATE *psf) ;

static  int   au_format_to_encoding (int format) ;

static int    au_write_header (SF_PRIVATE *psf, int calc_length) ;
static int    au_read_header (SF_PRIVATE *psf) ;

/*------------------------------------------------------------------------------
** Public function.
*/

int
au_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 = au_read_header (psf)))
      return error ;
    } ;

  if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_AU)
    return  SFE_BAD_OPEN_FORMAT ;

  subformat = SF_CODEC (psf->sf.format) ;

  if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
  { psf->endian = SF_ENDIAN (psf->sf.format) ;
    if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU)
      psf->endian = SF_ENDIAN_LITTLE ;
    else if (psf->endian != SF_ENDIAN_LITTLE)
      psf->endian = SF_ENDIAN_BIG ;

    if (au_write_header (psf, SF_FALSE))
      return psf->error ;

    psf->write_header = au_write_header ;
    } ;

  psf->container_close = au_close ;

  psf->blockwidth = psf->bytewidth * psf->sf.channels ;

  switch (subformat)
  { case SF_FORMAT_ULAW : /* 8-bit Ulaw encoding. */
        ulaw_init (psf) ;
        break ;

    case SF_FORMAT_PCM_S8 : /* 8-bit linear PCM. */
        error = pcm_init (psf) ;
        break ;

    case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */
    case SF_FORMAT_PCM_24 : /* 24-bit linear PCM */
    case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */
        error = pcm_init (psf) ;
        break ;

    case SF_FORMAT_ALAW : /* 8-bit Alaw encoding. */
        alaw_init (psf) ;
        break ;

    /* Lite remove start */
    case SF_FORMAT_FLOAT :  /* 32-bit floats. */
        error = float32_init (psf) ;
        break ;

    case SF_FORMAT_DOUBLE : /* 64-bit double precision floats. */
        error = double64_init (psf) ;
        break ;

    case SF_FORMAT_G721_32 :
        error = g72x_init (psf) ;
        psf->sf.seekable = SF_FALSE ;
        break ;

    case SF_FORMAT_G723_24 :
        error = g72x_init (psf) ;
        psf->sf.seekable = SF_FALSE ;
        break ;

    case SF_FORMAT_G723_40 :
        error = g72x_init (psf) ;
        psf->sf.seekable = SF_FALSE ;
        break ;
    /* Lite remove end */

    default : break ;
    } ;

  return error ;
} /* au_open */

/*------------------------------------------------------------------------------
*/

static int
au_close  (SF_PRIVATE *psf)
{
  if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
    au_write_header (psf, SF_TRUE) ;

  return 0 ;
} /* au_close */

static int
au_write_header (SF_PRIVATE *psf, int calc_length)
{ sf_count_t  current ;
  int     encoding, datalength ;

  if (psf->pipeoffset > 0)
    return 0 ;

  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 ;
    } ;

  encoding = au_format_to_encoding (SF_CODEC (psf->sf.format)) ;
  if (! encoding)
    return (psf->error = SFE_BAD_OPEN_FORMAT) ;

  /* Reset the current header length to zero. */
  psf->header.ptr [0] = 0 ;
  psf->header.indx = 0 ;

  /*
  ** Only attempt to seek if we are not writng to a pipe. If we are
  ** writing to a pipe we shouldn't be here anyway.
  */
  if (psf->is_pipe == SF_FALSE)
    psf_fseek (psf, 0, SEEK_SET) ;

  /*
  **  AU format files allow a datalength value of -1 if the datalength
  **  is not know at the time the header is written.
  **  Also use this value of -1 if the datalength > 2 gigabytes.
  */
  if (psf->datalength < 0 || psf->datalength > 0x7FFFFFFF)
    datalength = -1 ;
  else
    datalength = (int) (psf->datalength & 0x7FFFFFFF) ;

  if (psf->endian == SF_ENDIAN_BIG)
  { psf_binheader_writef (psf, "Em4", BHWm (DOTSND_MARKER), BHW4 (AU_DATA_OFFSET)) ;
    psf_binheader_writef (psf, "E4444", BHW4 (datalength), BHW4 (encoding), BHW4 (psf->sf.samplerate), BHW4 (psf->sf.channels)) ;
    }
  else if (psf->endian == SF_ENDIAN_LITTLE)
  { psf_binheader_writef (psf, "em4", BHWm (DNSDOT_MARKER), BHW4 (AU_DATA_OFFSET)) ;
    psf_binheader_writef (psf, "e4444", BHW4 (datalength), BHW4 (encoding), BHW4 (psf->sf.samplerate), BHW4 (psf->sf.channels)) ;
    }
  else
    return (psf->error = SFE_BAD_OPEN_FORMAT) ;

  /* Header construction complete so write it out. */
  psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;

  if (psf->error)
    return psf->error ;

  psf->dataoffset = psf->header.indx ;

  if (current > 0)
    psf_fseek (psf, current, SEEK_SET) ;

  return psf->error ;
} /* au_write_header */

static int
au_format_to_encoding (int format)
{
  switch (format)
  { case SF_FORMAT_PCM_S8 :   return AU_ENCODING_PCM_8 ;
    case SF_FORMAT_PCM_16 :   return AU_ENCODING_PCM_16 ;
    case SF_FORMAT_PCM_24 :   return AU_ENCODING_PCM_24 ;
    case SF_FORMAT_PCM_32 :   return AU_ENCODING_PCM_32 ;

    case SF_FORMAT_FLOAT :    return AU_ENCODING_FLOAT ;
    case SF_FORMAT_DOUBLE :   return AU_ENCODING_DOUBLE ;

    case SF_FORMAT_ULAW :   return AU_ENCODING_ULAW_8 ;
    case SF_FORMAT_ALAW :   return AU_ENCODING_ALAW_8 ;

    case SF_FORMAT_G721_32 :  return AU_ENCODING_ADPCM_G721_32 ;
    case SF_FORMAT_G723_24 :  return AU_ENCODING_ADPCM_G723_24 ;
    case SF_FORMAT_G723_40 :  return AU_ENCODING_ADPCM_G723_40 ;

    default : break ;
    } ;
  return 0 ;
} /* au_format_to_encoding */

static int
au_read_header (SF_PRIVATE *psf)
{ AU_FMT  au_fmt ;
  int   marker, dword ;
  sf_count_t data_end ;

  memset (&au_fmt, 0, sizeof (au_fmt)) ;
  psf_binheader_readf (psf, "pm", 0, &marker) ;
  psf_log_printf (psf, "%M\n", marker) ;

  if (marker == DOTSND_MARKER)
  { psf->endian = SF_ENDIAN_BIG ;

    psf_binheader_readf (psf, "E44444", &(au_fmt.dataoffset), &(au_fmt.datasize),
          &(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ;
    }
  else if (marker == DNSDOT_MARKER)
  { psf->endian = SF_ENDIAN_LITTLE ;
    psf_binheader_readf (psf, "e44444", &(au_fmt.dataoffset), &(au_fmt.datasize),
          &(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ;
    }
  else
    return SFE_AU_NO_DOTSND ;

  psf_log_printf (psf, "  Data Offset : %d\n", au_fmt.dataoffset) ;

  if (psf->fileoffset > 0 && au_fmt.datasize == -1)
  { psf_log_printf (psf, "  Data Size   : -1\n") ;
    return SFE_AU_EMBED_BAD_LEN ;
    } ;

  data_end = (sf_count_t) au_fmt.dataoffset + (sf_count_t) au_fmt.datasize ;
  if (psf->fileoffset > 0)
  { psf->filelength = data_end ;
    psf_log_printf (psf, "  Data Size   : %d\n", au_fmt.datasize) ;
    }
  else if (au_fmt.datasize == -1 || data_end == psf->filelength)
    psf_log_printf (psf, "  Data Size   : %d\n", au_fmt.datasize) ;
  else if (data_end < psf->filelength)
  { psf->filelength = data_end ;
    psf_log_printf (psf, "  Data Size   : %d\n", au_fmt.datasize) ;
    }
  else
  { dword = psf->filelength - au_fmt.dataoffset ;
    psf_log_printf (psf, "  Data Size   : %d (should be %d)\n", au_fmt.datasize, dword) ;
    au_fmt.datasize = dword ;
    } ;

  psf->dataoffset = au_fmt.dataoffset ;
  psf->datalength = psf->filelength - psf->dataoffset ;

  if (psf_ftell (psf) < psf->dataoffset)
    psf_binheader_readf (psf, "j", psf->dataoffset - psf_ftell (psf)) ;

  psf->sf.samplerate  = au_fmt.samplerate ;
  psf->sf.channels  = au_fmt.channels ;

  /* Only fill in type major. */
  if (psf->endian == SF_ENDIAN_BIG)
    psf->sf.format = SF_FORMAT_AU ;
  else if (psf->endian == SF_ENDIAN_LITTLE)
    psf->sf.format = SF_ENDIAN_LITTLE | SF_FORMAT_AU ;

  psf_log_printf (psf, "  Encoding    : %d => ", au_fmt.encoding) ;

  psf->sf.format = SF_ENDIAN (psf->sf.format) ;

  switch (au_fmt.encoding)
  { case AU_ENCODING_ULAW_8 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_ULAW ;
        psf->bytewidth = 1 ;  /* Before decoding */
        psf_log_printf (psf, "8-bit ISDN u-law\n") ;
        break ;

    case AU_ENCODING_PCM_8 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_S8 ;
        psf->bytewidth = 1 ;
        psf_log_printf (psf, "8-bit linear PCM\n") ;
        break ;

    case AU_ENCODING_PCM_16 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_16 ;
        psf->bytewidth = 2 ;
        psf_log_printf (psf, "16-bit linear PCM\n") ;
        break ;

    case AU_ENCODING_PCM_24 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_24 ;
        psf->bytewidth = 3 ;
        psf_log_printf (psf, "24-bit linear PCM\n") ;
        break ;

    case AU_ENCODING_PCM_32 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_32 ;
        psf->bytewidth = 4 ;
        psf_log_printf (psf, "32-bit linear PCM\n") ;
        break ;

    case AU_ENCODING_FLOAT :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_FLOAT ;
        psf->bytewidth = 4 ;
        psf_log_printf (psf, "32-bit float\n") ;
        break ;

    case AU_ENCODING_DOUBLE :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_DOUBLE ;
        psf->bytewidth = 8 ;
        psf_log_printf (psf, "64-bit double precision float\n") ;
        break ;

    case AU_ENCODING_ALAW_8 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_ALAW ;
        psf->bytewidth = 1 ;  /* Before decoding */
        psf_log_printf (psf, "8-bit ISDN A-law\n") ;
        break ;

    case AU_ENCODING_ADPCM_G721_32 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G721_32 ;
        psf->bytewidth = 0 ;
        psf_log_printf (psf, "G721 32kbs ADPCM\n") ;
        break ;

    case AU_ENCODING_ADPCM_G723_24 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G723_24 ;
        psf->bytewidth = 0 ;
        psf_log_printf (psf, "G723 24kbs ADPCM\n") ;
        break ;

    case AU_ENCODING_ADPCM_G723_40 :
        psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G723_40 ;
        psf->bytewidth = 0 ;
        psf_log_printf (psf, "G723 40kbs ADPCM\n") ;
        break ;

    case AU_ENCODING_ADPCM_G722 :
        psf_log_printf (psf, "G722 64 kbs ADPCM (unsupported)\n") ;
        break ;

    case AU_ENCODING_NEXT :
        psf_log_printf (psf, "Weird NeXT encoding format (unsupported)\n") ;
        break ;

    default :
        psf_log_printf (psf, "Unknown!!\n") ;
        break ;
    } ;

  psf_log_printf (psf, "  Sample Rate : %d\n", au_fmt.samplerate) ;
  if (au_fmt.channels < 1)
  { psf_log_printf (psf, "  Channels    : %d  **** should be >= 1\n", au_fmt.channels) ;
    return SFE_CHANNEL_COUNT_ZERO ;
    }
  else if (au_fmt.channels > SF_MAX_CHANNELS)
  { psf_log_printf (psf, "  Channels    : %d  **** should be <= %d\n", au_fmt.channels, SF_MAX_CHANNELS) ;
    return SFE_CHANNEL_COUNT ;
    } ;

  psf_log_printf (psf, "  Channels    : %d\n", au_fmt.channels) ;

  psf->blockwidth = psf->sf.channels * psf->bytewidth ;

  if (! psf->sf.frames && psf->blockwidth)
    psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;

  return 0 ;
} /* au_read_header */


Coverage Report

Created: 2025-10-21 06:11

Line	Count	Source
1		/*
2		** Copyright (C) 1999-2017 Erik de Castro Lopo <erikd@mega-nerd.com>
3		**
4		** This program is free software; you can redistribute it and/or modify
5		** it under the terms of the GNU Lesser General Public License as published by
6		** the Free Software Foundation; either version 2.1 of the License, or
7		** (at your option) any later version.
8		**
9		** This program is distributed in the hope that it will be useful,
10		** but WITHOUT ANY WARRANTY; without even the implied warranty of
11		** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12		** GNU Lesser General Public License for more details.
13		**
14		** You should have received a copy of the GNU Lesser General Public License
15		** along with this program; if not, write to the Free Software
16		** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17		*/
18
19		#include "sfconfig.h"
20
21		#include <stdio.h>
22		#include <fcntl.h>
23		#include <string.h>
24		#include <ctype.h>
25
26		#include "sndfile.h"
27		#include "sfendian.h"
28		#include "common.h"
29
30		/*------------------------------------------------------------------------------
31		** Macros to handle big/little endian issues.
32		*/
33
34	1.99k	#define DOTSND_MARKER (MAKE_MARKER ('.', 's', 'n', 'd'))
35	1.04k	#define DNSDOT_MARKER (MAKE_MARKER ('d', 'n', 's', '.'))
36
37		#define AU_DATA_OFFSET 24
38
39		/*------------------------------------------------------------------------------
40		** Known AU file encoding types.
41		*/
42
43		enum
44		{ AU_ENCODING_ULAW_8 = 1, /* 8-bit u-law samples */
45		AU_ENCODING_PCM_8 = 2, /* 8-bit linear samples */
46		AU_ENCODING_PCM_16 = 3, /* 16-bit linear samples */
47		AU_ENCODING_PCM_24 = 4, /* 24-bit linear samples */
48		AU_ENCODING_PCM_32 = 5, /* 32-bit linear samples */
49
50		AU_ENCODING_FLOAT = 6, /* floating-point samples */
51		AU_ENCODING_DOUBLE = 7, /* double-precision float samples */
52		AU_ENCODING_INDIRECT = 8, /* fragmented sampled data */
53		AU_ENCODING_NESTED = 9, /* ? */
54		AU_ENCODING_DSP_CORE = 10, /* DSP program */
55		AU_ENCODING_DSP_DATA_8 = 11, /* 8-bit fixed-point samples */
56		AU_ENCODING_DSP_DATA_16 = 12, /* 16-bit fixed-point samples */
57		AU_ENCODING_DSP_DATA_24 = 13, /* 24-bit fixed-point samples */
58		AU_ENCODING_DSP_DATA_32 = 14, /* 32-bit fixed-point samples */
59
60		AU_ENCODING_DISPLAY = 16, /* non-audio display data */
61		AU_ENCODING_MULAW_SQUELCH = 17, /* ? */
62		AU_ENCODING_EMPHASIZED = 18, /* 16-bit linear with emphasis */
63		AU_ENCODING_NEXT = 19, /* 16-bit linear with compression (NEXT) */
64		AU_ENCODING_COMPRESSED_EMPHASIZED = 20, /* A combination of the two above */
65		AU_ENCODING_DSP_COMMANDS = 21, /* Music Kit DSP commands */
66		AU_ENCODING_DSP_COMMANDS_SAMPLES = 22, /* ? */
67
68		AU_ENCODING_ADPCM_G721_32 = 23, /* G721 32 kbs ADPCM - 4 bits per sample. */
69		AU_ENCODING_ADPCM_G722 = 24, /* G722 64 kbs ADPCM */
70		AU_ENCODING_ADPCM_G723_24 = 25, /* G723 24 kbs ADPCM - 3 bits per sample. */
71		AU_ENCODING_ADPCM_G723_40 = 26, /* G723 40 kbs ADPCM - 5 bits per sample. */
72
73		AU_ENCODING_ALAW_8 = 27
74		} ;
75
76		/*------------------------------------------------------------------------------
77		** Typedefs.
78		*/
79
80		typedef struct
81		{ int dataoffset ;
82		int datasize ;
83		int encoding ;
84		int samplerate ;
85		int channels ;
86		} AU_FMT ;
87
88
89		/*------------------------------------------------------------------------------
90		** Private static functions.
91		*/
92
93		static int au_close (SF_PRIVATE *psf) ;
94
95		static int au_format_to_encoding (int format) ;
96
97		static int au_write_header (SF_PRIVATE *psf, int calc_length) ;
98		static int au_read_header (SF_PRIVATE *psf) ;
99
100		/*------------------------------------------------------------------------------
101		** Public function.
102		*/
103
104		int
105		au_open (SF_PRIVATE *psf)
106	1.99k	{ int subformat ;
107	1.99k	int error = 0 ;
108
109	1.99k	if (psf->file.mode == SFM_READ \|\| (psf->file.mode == SFM_RDWR && psf->filelength > 0))
110	1.99k	{ if ((error = au_read_header (psf)))
111	263	return error ;
112	1.99k	} ;
113
114	1.73k	if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_AU)
115	7	return SFE_BAD_OPEN_FORMAT ;
116
117	1.72k	subformat = SF_CODEC (psf->sf.format) ;
118
119	1.72k	if (psf->file.mode == SFM_WRITE \|\| psf->file.mode == SFM_RDWR)
120	0	{ psf->endian = SF_ENDIAN (psf->sf.format) ;
121	0	if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU)
122	0	psf->endian = SF_ENDIAN_LITTLE ;
123	0	else if (psf->endian != SF_ENDIAN_LITTLE)
124	0	psf->endian = SF_ENDIAN_BIG ;
125
126	0	if (au_write_header (psf, SF_FALSE))
127	0	return psf->error ;
128
129	0	psf->write_header = au_write_header ;
130	1.72k	} ;
131
132	1.72k	psf->container_close = au_close ;
133
134	1.72k	psf->blockwidth = psf->bytewidth * psf->sf.channels ;
135
136	1.72k	switch (subformat)
137	1.72k	{ case SF_FORMAT_ULAW : /* 8-bit Ulaw encoding. */
138	107	ulaw_init (psf) ;
139	107	break ;
140
141	92	case SF_FORMAT_PCM_S8 : /* 8-bit linear PCM. */
142	92	error = pcm_init (psf) ;
143	92	break ;
144
145	138	case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */
146	342	case SF_FORMAT_PCM_24 : /* 24-bit linear PCM */
147	439	case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */
148	439	error = pcm_init (psf) ;
149	439	break ;
150
151	125	case SF_FORMAT_ALAW : /* 8-bit Alaw encoding. */
152	125	alaw_init (psf) ;
153	125	break ;
154
155		/* Lite remove start */
156	165	case SF_FORMAT_FLOAT : /* 32-bit floats. */
157	165	error = float32_init (psf) ;
158	165	break ;
159
160	184	case SF_FORMAT_DOUBLE : /* 64-bit double precision floats. */
161	184	error = double64_init (psf) ;
162	184	break ;
163
164	123	case SF_FORMAT_G721_32 :
165	123	error = g72x_init (psf) ;
166	123	psf->sf.seekable = SF_FALSE ;
167	123	break ;
168
169	410	case SF_FORMAT_G723_24 :
170	410	error = g72x_init (psf) ;
171	410	psf->sf.seekable = SF_FALSE ;
172	410	break ;
173
174	79	case SF_FORMAT_G723_40 :
175	79	error = g72x_init (psf) ;
176	79	psf->sf.seekable = SF_FALSE ;
177	79	break ;
178		/* Lite remove end */
179
180	0	default : break ;
181	1.72k	} ;
182
183	1.72k	return error ;
184	1.72k	} /* au_open */
185
186		/*------------------------------------------------------------------------------
187		*/
188
189		static int
190		au_close (SF_PRIVATE *psf)
191	1.72k	{
192	1.72k	if (psf->file.mode == SFM_WRITE \|\| psf->file.mode == SFM_RDWR)
193	0	au_write_header (psf, SF_TRUE) ;
194
195	1.72k	return 0 ;
196	1.72k	} /* au_close */
197
198		static int
199		au_write_header (SF_PRIVATE *psf, int calc_length)
200	0	{ sf_count_t current ;
201	0	int encoding, datalength ;
202
203	0	if (psf->pipeoffset > 0)
204	0	return 0 ;
205
206	0	current = psf_ftell (psf) ;
207
208	0	if (calc_length)
209	0	{ psf->filelength = psf_get_filelen (psf) ;
210
211	0	psf->datalength = psf->filelength - psf->dataoffset ;
212	0	if (psf->dataend)
213	0	psf->datalength -= psf->filelength - psf->dataend ;
214	0	} ;
215
216	0	encoding = au_format_to_encoding (SF_CODEC (psf->sf.format)) ;
217	0	if (! encoding)
218	0	return (psf->error = SFE_BAD_OPEN_FORMAT) ;
219
220		/* Reset the current header length to zero. */
221	0	psf->header.ptr [0] = 0 ;
222	0	psf->header.indx = 0 ;
223
224		/*
225		** Only attempt to seek if we are not writng to a pipe. If we are
226		** writing to a pipe we shouldn't be here anyway.
227		*/
228	0	if (psf->is_pipe == SF_FALSE)
229	0	psf_fseek (psf, 0, SEEK_SET) ;
230
231		/*
232		** AU format files allow a datalength value of -1 if the datalength
233		** is not know at the time the header is written.
234		** Also use this value of -1 if the datalength > 2 gigabytes.
235		*/
236	0	if (psf->datalength < 0 \|\| psf->datalength > 0x7FFFFFFF)
237	0	datalength = -1 ;
238	0	else
239	0	datalength = (int) (psf->datalength & 0x7FFFFFFF) ;
240
241	0	if (psf->endian == SF_ENDIAN_BIG)
242	0	{ psf_binheader_writef (psf, "Em4", BHWm (DOTSND_MARKER), BHW4 (AU_DATA_OFFSET)) ;
243	0	psf_binheader_writef (psf, "E4444", BHW4 (datalength), BHW4 (encoding), BHW4 (psf->sf.samplerate), BHW4 (psf->sf.channels)) ;
244	0	}
245	0	else if (psf->endian == SF_ENDIAN_LITTLE)
246	0	{ psf_binheader_writef (psf, "em4", BHWm (DNSDOT_MARKER), BHW4 (AU_DATA_OFFSET)) ;
247	0	psf_binheader_writef (psf, "e4444", BHW4 (datalength), BHW4 (encoding), BHW4 (psf->sf.samplerate), BHW4 (psf->sf.channels)) ;
248	0	}
249	0	else
250	0	return (psf->error = SFE_BAD_OPEN_FORMAT) ;
251
252		/* Header construction complete so write it out. */
253	0	psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;
254
255	0	if (psf->error)
256	0	return psf->error ;
257
258	0	psf->dataoffset = psf->header.indx ;
259
260	0	if (current > 0)
261	0	psf_fseek (psf, current, SEEK_SET) ;
262
263	0	return psf->error ;
264	0	} /* au_write_header */
265
266		static int
267		au_format_to_encoding (int format)
268	0	{
269	0	switch (format)
270	0	{ case SF_FORMAT_PCM_S8 : return AU_ENCODING_PCM_8 ;
271	0	case SF_FORMAT_PCM_16 : return AU_ENCODING_PCM_16 ;
272	0	case SF_FORMAT_PCM_24 : return AU_ENCODING_PCM_24 ;
273	0	case SF_FORMAT_PCM_32 : return AU_ENCODING_PCM_32 ;
274
275	0	case SF_FORMAT_FLOAT : return AU_ENCODING_FLOAT ;
276	0	case SF_FORMAT_DOUBLE : return AU_ENCODING_DOUBLE ;
277
278	0	case SF_FORMAT_ULAW : return AU_ENCODING_ULAW_8 ;
279	0	case SF_FORMAT_ALAW : return AU_ENCODING_ALAW_8 ;
280
281	0	case SF_FORMAT_G721_32 : return AU_ENCODING_ADPCM_G721_32 ;
282	0	case SF_FORMAT_G723_24 : return AU_ENCODING_ADPCM_G723_24 ;
283	0	case SF_FORMAT_G723_40 : return AU_ENCODING_ADPCM_G723_40 ;
284
285	0	default : break ;
286	0	} ;
287	0	return 0 ;
288	0	} /* au_format_to_encoding */
289
290		static int
291		au_read_header (SF_PRIVATE *psf)
292	1.99k	{ AU_FMT au_fmt ;
293	1.99k	int marker, dword ;
294	1.99k	sf_count_t data_end ;
295
296	1.99k	memset (&au_fmt, 0, sizeof (au_fmt)) ;
297	1.99k	psf_binheader_readf (psf, "pm", 0, &marker) ;
298	1.99k	psf_log_printf (psf, "%M\n", marker) ;
299
300	1.99k	if (marker == DOTSND_MARKER)
301	949	{ psf->endian = SF_ENDIAN_BIG ;
302
303	949	psf_binheader_readf (psf, "E44444", &(au_fmt.dataoffset), &(au_fmt.datasize),
304	949	&(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ;
305	949	}
306	1.04k	else if (marker == DNSDOT_MARKER)
307	1.04k	{ psf->endian = SF_ENDIAN_LITTLE ;
308	1.04k	psf_binheader_readf (psf, "e44444", &(au_fmt.dataoffset), &(au_fmt.datasize),
309	1.04k	&(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ;
310	1.04k	}
311	0	else
312	0	return SFE_AU_NO_DOTSND ;
313
314	1.99k	psf_log_printf (psf, " Data Offset : %d\n", au_fmt.dataoffset) ;
315
316	1.99k	if (psf->fileoffset > 0 && au_fmt.datasize == -1)
317	1	{ psf_log_printf (psf, " Data Size : -1\n") ;
318	1	return SFE_AU_EMBED_BAD_LEN ;
319	1.99k	} ;
320
321	1.99k	data_end = (sf_count_t) au_fmt.dataoffset + (sf_count_t) au_fmt.datasize ;
322	1.99k	if (psf->fileoffset > 0)
323	24	{ psf->filelength = data_end ;
324	24	psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ;
325	24	}
326	1.96k	else if (au_fmt.datasize == -1 \|\| data_end == psf->filelength)
327	15	psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ;
328	1.95k	else if (data_end < psf->filelength)
329	469	{ psf->filelength = data_end ;
330	469	psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ;
331	469	}
332	1.48k	else
333	1.48k	{ dword = psf->filelength - au_fmt.dataoffset ;
334	1.48k	psf_log_printf (psf, " Data Size : %d (should be %d)\n", au_fmt.datasize, dword) ;
335	1.48k	au_fmt.datasize = dword ;
336	1.48k	} ;
337
338	1.99k	psf->dataoffset = au_fmt.dataoffset ;
339	1.99k	psf->datalength = psf->filelength - psf->dataoffset ;
340
341	1.99k	if (psf_ftell (psf) < psf->dataoffset)
342	284	psf_binheader_readf (psf, "j", psf->dataoffset - psf_ftell (psf)) ;
343
344	1.99k	psf->sf.samplerate = au_fmt.samplerate ;
345	1.99k	psf->sf.channels = au_fmt.channels ;
346
347		/* Only fill in type major. */
348	1.99k	if (psf->endian == SF_ENDIAN_BIG)
349	948	psf->sf.format = SF_FORMAT_AU ;
350	1.04k	else if (psf->endian == SF_ENDIAN_LITTLE)
351	1.04k	psf->sf.format = SF_ENDIAN_LITTLE \| SF_FORMAT_AU ;
352
353	1.99k	psf_log_printf (psf, " Encoding : %d => ", au_fmt.encoding) ;
354
355	1.99k	psf->sf.format = SF_ENDIAN (psf->sf.format) ;
356
357	1.99k	switch (au_fmt.encoding)
358	1.99k	{ case AU_ENCODING_ULAW_8 :
359	109	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_ULAW ;
360	109	psf->bytewidth = 1 ; /* Before decoding */
361	109	psf_log_printf (psf, "8-bit ISDN u-law\n") ;
362	109	break ;
363
364	93	case AU_ENCODING_PCM_8 :
365	93	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_PCM_S8 ;
366	93	psf->bytewidth = 1 ;
367	93	psf_log_printf (psf, "8-bit linear PCM\n") ;
368	93	break ;
369
370	139	case AU_ENCODING_PCM_16 :
371	139	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_PCM_16 ;
372	139	psf->bytewidth = 2 ;
373	139	psf_log_printf (psf, "16-bit linear PCM\n") ;
374	139	break ;
375
376	205	case AU_ENCODING_PCM_24 :
377	205	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_PCM_24 ;
378	205	psf->bytewidth = 3 ;
379	205	psf_log_printf (psf, "24-bit linear PCM\n") ;
380	205	break ;
381
382	99	case AU_ENCODING_PCM_32 :
383	99	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_PCM_32 ;
384	99	psf->bytewidth = 4 ;
385	99	psf_log_printf (psf, "32-bit linear PCM\n") ;
386	99	break ;
387
388	167	case AU_ENCODING_FLOAT :
389	167	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_FLOAT ;
390	167	psf->bytewidth = 4 ;
391	167	psf_log_printf (psf, "32-bit float\n") ;
392	167	break ;
393
394	185	case AU_ENCODING_DOUBLE :
395	185	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_DOUBLE ;
396	185	psf->bytewidth = 8 ;
397	185	psf_log_printf (psf, "64-bit double precision float\n") ;
398	185	break ;
399
400	126	case AU_ENCODING_ALAW_8 :
401	126	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_ALAW ;
402	126	psf->bytewidth = 1 ; /* Before decoding */
403	126	psf_log_printf (psf, "8-bit ISDN A-law\n") ;
404	126	break ;
405
406	125	case AU_ENCODING_ADPCM_G721_32 :
407	125	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_G721_32 ;
408	125	psf->bytewidth = 0 ;
409	125	psf_log_printf (psf, "G721 32kbs ADPCM\n") ;
410	125	break ;
411
412	413	case AU_ENCODING_ADPCM_G723_24 :
413	413	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_G723_24 ;
414	413	psf->bytewidth = 0 ;
415	413	psf_log_printf (psf, "G723 24kbs ADPCM\n") ;
416	413	break ;
417
418	81	case AU_ENCODING_ADPCM_G723_40 :
419	81	psf->sf.format \|= SF_FORMAT_AU \| SF_FORMAT_G723_40 ;
420	81	psf->bytewidth = 0 ;
421	81	psf_log_printf (psf, "G723 40kbs ADPCM\n") ;
422	81	break ;
423
424	1	case AU_ENCODING_ADPCM_G722 :
425	1	psf_log_printf (psf, "G722 64 kbs ADPCM (unsupported)\n") ;
426	1	break ;
427
428	1	case AU_ENCODING_NEXT :
429	1	psf_log_printf (psf, "Weird NeXT encoding format (unsupported)\n") ;
430	1	break ;
431
432	249	default :
433	249	psf_log_printf (psf, "Unknown!!\n") ;
434	249	break ;
435	1.99k	} ;
436
437	1.99k	psf_log_printf (psf, " Sample Rate : %d\n", au_fmt.samplerate) ;
438	1.99k	if (au_fmt.channels < 1)
439	243	{ psf_log_printf (psf, " Channels : %d **** should be >= 1\n", au_fmt.channels) ;
440	243	return SFE_CHANNEL_COUNT_ZERO ;
441	243	}
442	1.75k	else if (au_fmt.channels > SF_MAX_CHANNELS)
443	19	{ psf_log_printf (psf, " Channels : %d **** should be <= %d\n", au_fmt.channels, SF_MAX_CHANNELS) ;
444	19	return SFE_CHANNEL_COUNT ;
445	1.73k	} ;
446
447	1.73k	psf_log_printf (psf, " Channels : %d\n", au_fmt.channels) ;
448
449	1.73k	psf->blockwidth = psf->sf.channels * psf->bytewidth ;
450
451	1.73k	if (! psf->sf.frames && psf->blockwidth)
452	1.11k	psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
453
454	1.73k	return 0 ;
455	1.99k	} /* au_read_header */
456