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freeswitch/libs/libsndfile/src/sd2.c

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/*
** Copyright (C) 2001-2006 Erik de Castro Lopo <erikd@mega-nerd.com>
** Copyright (C) 2004 Paavo Jumppanen
**
** 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.
*/
/*
** The sd2 support implemented in this file was partially sponsored
** (financially) by Paavo Jumppanen.
*/
/*
** Documentation on the Mac resource fork was obtained here :
** http://developer.apple.com/documentation/mac/MoreToolbox/MoreToolbox-99.html
*/
#include "sfconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "sndfile.h"
#include "sfendian.h"
#include "common.h"
/*------------------------------------------------------------------------------
* Markers.
*/
#define Sd2f_MARKER MAKE_MARKER ('S', 'd', '2', 'f')
#define Sd2a_MARKER MAKE_MARKER ('S', 'd', '2', 'a')
#define ALCH_MARKER MAKE_MARKER ('A', 'L', 'C', 'H')
#define lsf1_MARKER MAKE_MARKER ('l', 's', 'f', '1')
#define STR_MARKER MAKE_MARKER ('S', 'T', 'R', ' ')
#define sdML_MARKER MAKE_MARKER ('s', 'd', 'M', 'L')
enum
{ RSRC_STR = 111,
RSRC_BIN
} ;
typedef struct
{ unsigned char * rsrc_data ;
int rsrc_len ;
int data_offset, data_length ;
int map_offset, map_length ;
int type_count, type_offset ;
int item_offset ;
int str_index, str_count ;
int string_offset ;
/* All the above just to get these three. */
int sample_size, sample_rate, channels ;
} SD2_RSRC ;
typedef struct
{ int type ;
int id ;
char name [32] ;
char value [32] ;
int value_len ;
} STR_RSRC ;
/*------------------------------------------------------------------------------
* Private static functions.
*/
static int sd2_close (SF_PRIVATE *psf) ;
static int sd2_parse_rsrc_fork (SF_PRIVATE *psf) ;
static int parse_str_rsrc (SF_PRIVATE *psf, SD2_RSRC * rsrc) ;
static int sd2_write_rsrc_fork (SF_PRIVATE *psf, int calc_length) ;
/*------------------------------------------------------------------------------
** Public functions.
*/
int
sd2_open (SF_PRIVATE *psf)
{ int subformat, error = 0, valid ;
/* SD2 is always big endian. */
psf->endian = SF_ENDIAN_BIG ;
if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->rsrclength > 0))
{ psf_use_rsrc (psf, SF_TRUE) ;
valid = psf_file_valid (psf) ;
psf_use_rsrc (psf, SF_FALSE) ;
if (! valid)
{ psf_log_printf (psf, "sd2_open : psf->rsrcdes < 0\n") ;
return SFE_SD2_BAD_RSRC ;
} ;
error = sd2_parse_rsrc_fork (psf) ;
if (error)
goto error_cleanup ;
} ;
if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_SD2)
{ error = SFE_BAD_OPEN_FORMAT ;
goto error_cleanup ;
} ;
subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
psf->dataoffset = 0 ;
/* Only open and write the resource in RDWR mode is its current length is zero. */
if (psf->mode == SFM_WRITE || (psf->mode == SFM_RDWR && psf->rsrclength == 0))
{ psf_open_rsrc (psf, psf->mode) ;
error = sd2_write_rsrc_fork (psf, SF_FALSE) ;
if (error)
goto error_cleanup ;
/* Not needed. */
psf->write_header = NULL ;
} ;
psf->container_close = sd2_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_24 : /* 24-bit linear PCM */
error = pcm_init (psf) ;
break ;
default :
error = SFE_UNIMPLEMENTED ;
break ;
} ;
psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
error_cleanup:
/* Close the resource fork regardless. We won't need it again. */
psf_close_rsrc (psf) ;
return error ;
} /* sd2_open */
/*------------------------------------------------------------------------------
*/
static int
sd2_close (SF_PRIVATE *psf)
{
if (psf->mode == SFM_WRITE)
{ /* Now we know for certain the audio_length of the file we can re-write
** correct values for the FORM, 8SVX and BODY chunks.
*/
} ;
return 0 ;
} /* sd2_close */
/*------------------------------------------------------------------------------
*/
static inline void
write_char (unsigned char * data, int offset, char value)
{ data [offset] = value ;
} /* write_char */
static inline void
write_short (unsigned char * data, int offset, short value)
{ data [offset] = value >> 8 ;
data [offset + 1] = value ;
} /* write_char */
static inline void
write_int (unsigned char * data, int offset, int value)
{ data [offset] = value >> 24 ;
data [offset + 1] = value >> 16 ;
data [offset + 2] = value >> 8 ;
data [offset + 3] = value ;
} /* write_int */
static inline void
write_marker (unsigned char * data, int offset, int value)
{
if (CPU_IS_BIG_ENDIAN)
{ data [offset] = value >> 24 ;
data [offset + 1] = value >> 16 ;
data [offset + 2] = value >> 8 ;
data [offset + 3] = value ;
}
else
{ data [offset] = value ;
data [offset + 1] = value >> 8 ;
data [offset + 2] = value >> 16 ;
data [offset + 3] = value >> 24 ;
} ;
} /* write_marker */
static void
write_str (unsigned char * data, int offset, char * buffer, int buffer_len)
{ memcpy (data + offset, buffer, buffer_len) ;
} /* write_str */
static int
sd2_write_rsrc_fork (SF_PRIVATE *psf, int UNUSED (calc_length))
{ SD2_RSRC rsrc ;
STR_RSRC str_rsrc [] =
{ { RSRC_STR, 1000, "_sample-size", "", 0 },
{ RSRC_STR, 1001, "_sample-rate", "", 0 },
{ RSRC_STR, 1002, "_channels", "", 0 },
{ RSRC_BIN, 1000, "_Markers", "", 8 }
} ;
int k, str_offset, data_offset, next_str ;
psf_use_rsrc (psf, SF_TRUE) ;
memset (&rsrc, 0, sizeof (rsrc)) ;
rsrc.sample_rate = psf->sf.samplerate ;
rsrc.sample_size = psf->bytewidth ;
rsrc.channels = psf->sf.channels ;
rsrc.rsrc_data = psf->header ;
rsrc.rsrc_len = sizeof (psf->header) ;
memset (rsrc.rsrc_data, 0xea, rsrc.rsrc_len) ;
LSF_SNPRINTF (str_rsrc [0].value, sizeof (str_rsrc [0].value), "_%d", rsrc.sample_size) ;
LSF_SNPRINTF (str_rsrc [1].value, sizeof (str_rsrc [1].value), "_%d.000000", rsrc.sample_rate) ;
LSF_SNPRINTF (str_rsrc [2].value, sizeof (str_rsrc [2].value), "_%d", rsrc.channels) ;
for (k = 0 ; k < ARRAY_LEN (str_rsrc) ; k++)
{ if (str_rsrc [k].value_len == 0)
{ str_rsrc [k].value_len = strlen (str_rsrc [k].value) ;
str_rsrc [k].value [0] = str_rsrc [k].value_len - 1 ;
} ;
/* Turn name string into a pascal string. */
str_rsrc [k].name [0] = strlen (str_rsrc [k].name) - 1 ;
} ;
rsrc.data_offset = 0x100 ;
/*
** Calculate data length :
** length of strings, plus the length of the sdML chunk.
*/
rsrc.data_length = 0 ;
for (k = 0 ; k < ARRAY_LEN (str_rsrc) ; k++)
rsrc.data_length += str_rsrc [k].value_len + 4 ;
rsrc.map_offset = rsrc.data_offset + rsrc.data_length ;
/* Very start of resource fork. */
write_int (rsrc.rsrc_data, 0, rsrc.data_offset) ;
write_int (rsrc.rsrc_data, 4, rsrc.map_offset) ;
write_int (rsrc.rsrc_data, 8, rsrc.data_length) ;
write_char (rsrc.rsrc_data, 0x30, strlen (psf->filename)) ;
write_str (rsrc.rsrc_data, 0x31, psf->filename, strlen (psf->filename)) ;
write_short (rsrc.rsrc_data, 0x50, 0) ;
write_marker (rsrc.rsrc_data, 0x52, Sd2f_MARKER) ;
write_marker (rsrc.rsrc_data, 0x56, lsf1_MARKER) ;
/* Very start of resource map. */
write_int (rsrc.rsrc_data, rsrc.map_offset + 0, rsrc.data_offset) ;
write_int (rsrc.rsrc_data, rsrc.map_offset + 4, rsrc.map_offset) ;
write_int (rsrc.rsrc_data, rsrc.map_offset + 8, rsrc.data_length) ;
/* These I don't currently understand. */
if (1)
{ write_char (rsrc.rsrc_data, rsrc.map_offset+ 16, 1) ;
/* Next resource map. */
write_int (rsrc.rsrc_data, rsrc.map_offset + 17, 0x12345678) ;
/* File ref number. */
write_short (rsrc.rsrc_data, rsrc.map_offset + 21, 0xabcd) ;
/* Fork attributes. */
write_short (rsrc.rsrc_data, rsrc.map_offset + 23, 0) ;
} ;
/* Resource type offset. */
rsrc.type_offset = rsrc.map_offset + 30 ;
write_short (rsrc.rsrc_data, rsrc.map_offset + 24, rsrc.type_offset - rsrc.map_offset - 2) ;
/* Type index max. */
rsrc.type_count = 2 ;
write_short (rsrc.rsrc_data, rsrc.map_offset + 28, rsrc.type_count - 1) ;
rsrc.item_offset = rsrc.type_offset + rsrc.type_count * 8 ;
rsrc.str_count = ARRAY_LEN (str_rsrc) ;
rsrc.string_offset = rsrc.item_offset + (rsrc.str_count + 1) * 12 - rsrc.map_offset ;
write_short (rsrc.rsrc_data, rsrc.map_offset + 26, rsrc.string_offset) ;
/* Write 'STR ' resource type. */
rsrc.str_count = 3 ;
write_marker (rsrc.rsrc_data, rsrc.type_offset, STR_MARKER) ;
write_short (rsrc.rsrc_data, rsrc.type_offset + 4, rsrc.str_count - 1) ;
write_short (rsrc.rsrc_data, rsrc.type_offset + 6, 0x12) ;
/* Write 'sdML' resource type. */
write_marker (rsrc.rsrc_data, rsrc.type_offset + 8, sdML_MARKER) ;
write_short (rsrc.rsrc_data, rsrc.type_offset + 12, 0) ;
write_short (rsrc.rsrc_data, rsrc.type_offset + 14, 0x36) ;
str_offset = rsrc.map_offset + rsrc.string_offset ;
next_str = 0 ;
data_offset = rsrc.data_offset ;
for (k = 0 ; k < ARRAY_LEN (str_rsrc) ; k++)
{ write_str (rsrc.rsrc_data, str_offset, str_rsrc [k].name, strlen (str_rsrc [k].name)) ;
write_short (rsrc.rsrc_data, rsrc.item_offset + k * 12, str_rsrc [k].id) ;
write_short (rsrc.rsrc_data, rsrc.item_offset + k * 12 + 2, next_str) ;
str_offset += strlen (str_rsrc [k].name) ;
next_str += strlen (str_rsrc [k].name) ;
write_int (rsrc.rsrc_data, rsrc.item_offset + k * 12 + 4, data_offset - rsrc.data_offset) ;
write_int (rsrc.rsrc_data, data_offset, str_rsrc [k].value_len) ;
write_str (rsrc.rsrc_data, data_offset + 4, str_rsrc [k].value, str_rsrc [k].value_len) ;
data_offset += 4 + str_rsrc [k].value_len ;
} ;
/* Finally, calculate and set map length. */
rsrc.map_length = str_offset - rsrc.map_offset ;
write_int (rsrc.rsrc_data, 12, rsrc.map_length) ;
write_int (rsrc.rsrc_data, rsrc.map_offset + 12, rsrc.map_length) ;
rsrc.rsrc_len = rsrc.map_offset + rsrc.map_length ;
psf_fwrite (rsrc.rsrc_data, rsrc.rsrc_len, 1, psf) ;
psf_use_rsrc (psf, SF_FALSE) ;
if (psf->error)
return psf->error ;
return 0 ;
} /* sd2_write_rsrc_fork */
/*------------------------------------------------------------------------------
*/
static inline int
read_char (const unsigned char * data, int offset)
{ return data [offset] ;
} /* read_char */
static inline int
read_short (const unsigned char * data, int offset)
{ return (data [offset] << 8) + data [offset + 1] ;
} /* read_short */
static inline int
read_int (const unsigned char * data, int offset)
{ return (data [offset] << 24) + (data [offset + 1] << 16) + (data [offset + 2] << 8) + data [offset + 3] ;
} /* read_int */
static inline int
read_marker (const unsigned char * data, int offset)
{
if (CPU_IS_BIG_ENDIAN)
return (data [offset] << 24) + (data [offset + 1] << 16) + (data [offset + 2] << 8) + data [offset + 3] ;
else if (CPU_IS_LITTLE_ENDIAN)
return data [offset] + (data [offset + 1] << 8) + (data [offset + 2] << 16) + (data [offset + 3] << 24) ;
else
return 0x666 ;
} /* read_marker */
static void
read_str (const unsigned char * data, int offset, char * buffer, int buffer_len)
{ int k ;
memset (buffer, 0, buffer_len) ;
for (k = 0 ; k < buffer_len - 1 ; k++)
{ if (isprint (data [offset + k]) == 0)
return ;
buffer [k] = data [offset + k] ;
} ;
return ;
} /* read_str */
static int
sd2_parse_rsrc_fork (SF_PRIVATE *psf)
{ SD2_RSRC rsrc ;
int k, marker, error = 0 ;
psf_use_rsrc (psf, SF_TRUE) ;
memset (&rsrc, 0, sizeof (rsrc)) ;
rsrc.rsrc_len = psf_get_filelen (psf) ;
psf_log_printf (psf, "Resource length : %d (0x%04X)\n", rsrc.rsrc_len, rsrc.rsrc_len) ;
if (rsrc.rsrc_len > SIGNED_SIZEOF (psf->header))
rsrc.rsrc_data = calloc (1, rsrc.rsrc_len) ;
else
rsrc.rsrc_data = psf->header ;
/* Read in the whole lot. */
psf_fread (rsrc.rsrc_data, rsrc.rsrc_len, 1, psf) ;
/* Reset the header storage because we have changed to the rsrcdes. */
psf->headindex = psf->headend = rsrc.rsrc_len ;
rsrc.data_offset = read_int (rsrc.rsrc_data, 0) ;
rsrc.map_offset = read_int (rsrc.rsrc_data, 4) ;
rsrc.data_length = read_int (rsrc.rsrc_data, 8) ;
rsrc.map_length = read_int (rsrc.rsrc_data, 12) ;
if (rsrc.data_offset == 0x51607 && rsrc.map_offset == 0x20000)
{ psf_log_printf (psf, "Trying offset of 0x52 bytes.\n") ;
rsrc.data_offset = read_int (rsrc.rsrc_data, 0x52 + 0) + 0x52 ;
rsrc.map_offset = read_int (rsrc.rsrc_data, 0x52 + 4) + 0x52 ;
rsrc.data_length = read_int (rsrc.rsrc_data, 0x52 + 8) ;
rsrc.map_length = read_int (rsrc.rsrc_data, 0x52 + 12) ;
} ;
psf_log_printf (psf, " data offset : 0x%04X\n map offset : 0x%04X\n"
" data length : 0x%04X\n map length : 0x%04X\n",
rsrc.data_offset, rsrc.map_offset, rsrc.data_length, rsrc.map_length) ;
if (rsrc.data_offset > rsrc.rsrc_len)
{ psf_log_printf (psf, "Error : rsrc.data_offset (%d, 0x%x) > len\n", rsrc.data_offset, rsrc.data_offset) ;
error = SFE_SD2_BAD_DATA_OFFSET ;
goto parse_rsrc_fork_cleanup ;
} ;
if (rsrc.map_offset > rsrc.rsrc_len)
{ psf_log_printf (psf, "Error : rsrc.map_offset > len\n") ;
error = SFE_SD2_BAD_MAP_OFFSET ;
goto parse_rsrc_fork_cleanup ;
} ;
if (rsrc.data_length > rsrc.rsrc_len)
{ psf_log_printf (psf, "Error : rsrc.data_length > len\n") ;
error = SFE_SD2_BAD_DATA_LENGTH ;
goto parse_rsrc_fork_cleanup ;
} ;
if (rsrc.map_length > rsrc.rsrc_len)
{ psf_log_printf (psf, "Error : rsrc.map_length > len\n") ;
error = SFE_SD2_BAD_MAP_LENGTH ;
goto parse_rsrc_fork_cleanup ;
} ;
if (rsrc.data_offset + rsrc.data_length != rsrc.map_offset || rsrc.map_offset + rsrc.map_length != rsrc.rsrc_len)
{ psf_log_printf (psf, "Error : This does not look like a MacOSX resource fork.\n") ;
error = SFE_SD2_BAD_RSRC ;
goto parse_rsrc_fork_cleanup ;
} ;
rsrc.string_offset = rsrc.map_offset + read_short (rsrc.rsrc_data, rsrc.map_offset + 26) ;
if (rsrc.string_offset > rsrc.rsrc_len)
{ psf_log_printf (psf, "Bad string offset (%d).\n", rsrc.string_offset) ;
error = SFE_SD2_BAD_RSRC ;
goto parse_rsrc_fork_cleanup ;
} ;
rsrc.type_offset = rsrc.map_offset + 30 ;
rsrc.type_count = read_short (rsrc.rsrc_data, rsrc.map_offset + 28) + 1 ;
if (rsrc.type_count < 1)
{ psf_log_printf (psf, "Bad type count.\n") ;
error = SFE_SD2_BAD_RSRC ;
goto parse_rsrc_fork_cleanup ;
} ;
rsrc.item_offset = rsrc.type_offset + rsrc.type_count * 8 ;
if (rsrc.item_offset < 0 || rsrc.item_offset > rsrc.rsrc_len)
{ psf_log_printf (psf, "Bad item offset (%d).\n", rsrc.item_offset) ;
error = SFE_SD2_BAD_RSRC ;
goto parse_rsrc_fork_cleanup ;
} ;
rsrc.str_index = -1 ;
for (k = 0 ; k < rsrc.type_count ; k ++)
{ marker = read_marker (rsrc.rsrc_data, rsrc.type_offset + k * 8) ;
if (marker == STR_MARKER)
{ rsrc.str_index = k ;
rsrc.str_count = read_short (rsrc.rsrc_data, rsrc.type_offset + k * 8 + 4) + 1 ;
error = parse_str_rsrc (psf, &rsrc) ;
goto parse_rsrc_fork_cleanup ;
} ;
} ;
psf_log_printf (psf, "No 'STR ' resource.\n") ;
error = SFE_SD2_BAD_RSRC ;
parse_rsrc_fork_cleanup :
psf_use_rsrc (psf, SF_FALSE) ;
if ((void *) rsrc.rsrc_data < (void *) psf || (void *) rsrc.rsrc_data > (void *) (psf + 1))
free (rsrc.rsrc_data) ;
return error ;
} /* sd2_parse_rsrc_fork */
static int
parse_str_rsrc (SF_PRIVATE *psf, SD2_RSRC * rsrc)
{ char name [32], value [32] ;
int k, str_offset, data_offset, data_len, rsrc_id ;
psf_log_printf (psf, "Finding parameters :\n") ;
str_offset = rsrc->string_offset ;
for (k = 0 ; k < rsrc->str_count ; k++)
{ int slen ;
slen = read_char (rsrc->rsrc_data, str_offset) ;
read_str (rsrc->rsrc_data, str_offset + 1, name, SF_MIN (SIGNED_SIZEOF (name), slen + 1)) ;
str_offset += slen + 1 ;
rsrc_id = read_short (rsrc->rsrc_data, rsrc->item_offset + k * 12) ;
data_offset = rsrc->data_offset + read_int (rsrc->rsrc_data, rsrc->item_offset + k * 12 + 4) ;
if (data_offset < 0 || data_offset > rsrc->rsrc_len)
{ psf_log_printf (psf, "Bad data offset (%d)\n", data_offset) ;
return SFE_SD2_BAD_DATA_OFFSET ;
} ;
data_len = read_int (rsrc->rsrc_data, data_offset) ;
if (data_len < 0 || data_len > rsrc->rsrc_len)
{ psf_log_printf (psf, "Bad data length (%d).\n", data_len) ;
return SFE_SD2_BAD_RSRC ;
} ;
slen = read_char (rsrc->rsrc_data, data_offset + 4) ;
read_str (rsrc->rsrc_data, data_offset + 5, value, SF_MIN (SIGNED_SIZEOF (value), slen + 1)) ;
psf_log_printf (psf, " %-12s 0x%04x %4d %2d %2d '%s'\n", name, data_offset, rsrc_id, data_len, slen, value) ;
if (strcmp (name, "sample-size") == 0 && rsrc->sample_size == 0)
rsrc->sample_size = strtol (value, NULL, 10) ;
else if (strcmp (name, "sample-rate") == 0 && rsrc->sample_rate == 0)
rsrc->sample_rate = strtol (value, NULL, 10) ;
else if (strcmp (name, "channels") == 0 && rsrc->channels == 0)
rsrc->channels = strtol (value, NULL, 10) ;
} ;
if (rsrc->sample_rate < 0)
{ psf_log_printf (psf, "Bad sample rate (%d)\n", rsrc->sample_rate) ;
return SFE_SD2_BAD_RSRC ;
} ;
if (rsrc->channels < 0)
{ psf_log_printf (psf, "Bad channel count (%d)\n", rsrc->channels) ;
return SFE_SD2_BAD_RSRC ;
} ;
psf->sf.samplerate = rsrc->sample_rate ;
psf->sf.channels = rsrc->channels ;
psf->bytewidth = rsrc->sample_size ;
switch (rsrc->sample_size)
{ case 1 :
psf->sf.format = SF_FORMAT_SD2 | SF_FORMAT_PCM_S8 ;
break ;
case 2 :
psf->sf.format = SF_FORMAT_SD2 | SF_FORMAT_PCM_16 ;
break ;
case 3 :
psf->sf.format = SF_FORMAT_SD2 | SF_FORMAT_PCM_24 ;
break ;
default :
psf_log_printf (psf, "Bad sample size (%d)\n", rsrc->sample_size) ;
return SFE_SD2_BAD_SAMPLE_SIZE ;
} ;
psf_log_printf (psf, "ok\n") ;
return 0 ;
} /* parse_str_rsrc */
/*
** 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: 1ee183e5-6b9f-4c2c-bd0a-24f35595cefc
*/
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