FileFormats.cpp File Reference

Works with libsndfile to provide encoding and other file information. More...

#include "FileFormats.h"
#include "wxArrayStringEx.h"
#include "Internat.h"
#include "MemoryX.h"
#include "BasicUI.h"
#include <Types.h>

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Macros
#define	NUM_HEADERS   13

Functions
int	sf_num_headers ()
	Get the number of container formats supported by libsndfile. More...
wxString	sf_header_index_name (int format)
	Get the name of a container format from libsndfile. More...
unsigned int	sf_header_index_to_type (int i)
int	sf_num_encodings ()
	Get the number of data encodings libsndfile supports (in any container or none. More...
wxString	sf_encoding_index_name (int i)
	Get the string name of the data encoding of the requested format. More...
unsigned int	sf_encoding_index_to_subtype (int i)
wxString	sf_header_name (int format)
	Get the string name of the specified container format. More...
wxString	sf_header_shortname (int format)
	Get an abbreviated form of the string name of the specified format. More...
wxString	sf_header_extension (int format)
	Get the most common file extension for the given format. More...
wxString	sf_encoding_name (int encoding)
	Get the string name of the specified data encoding. More...
int	sf_num_simple_formats ()
SF_FORMAT_INFO *	sf_simple_format (int i)
bool	sf_subtype_more_than_16_bits (unsigned int format)
bool	sf_subtype_is_integer (unsigned int format)
int	sf_subtype_bytes_per_sample (unsigned int format)
sampleFormat	sf_subtype_to_effective_format (unsigned int format)
	Choose the narrowest value in the sampleFormat enumeration for a given libsndfile format. More...
FileExtensions	sf_get_all_extensions ()
wxString	sf_normalize_name (const char *name)
static OSType	sf_header_mactype (int format)

Variables
static SF_FORMAT_INFO	g_format_info
OSType	MacNames [NUM_HEADERS]

Detailed Description

Works with libsndfile to provide encoding and other file information.

Definition in file FileFormats.cpp.

Macro Definition Documentation

NUM_HEADERS

#define NUM_HEADERS   13

Definition at line 290 of file FileFormats.cpp.

Function Documentation

sf_encoding_index_name()

wxString sf_encoding_index_name

(

int

encoding_num

)

Get the string name of the data encoding of the requested format.

uses SFC_GET_FORMAT_SUBTYPE

Definition at line 79 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info ;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = i;
   sf_command (NULL, SFC_GET_FORMAT_SUBTYPE,
               &format_info, sizeof (format_info));
   return sf_normalize_name(format_info.name);
}

References sf_normalize_name().

Referenced by anonymous_namespace{ExportPCM.cpp}::GetEncodings(), and ImportRawDialog::ImportRawDialog().

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sf_encoding_index_to_subtype()

unsigned int sf_encoding_index_to_subtype

(

int

i

)

Definition at line 90 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info ;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = i;
   sf_command (NULL, SFC_GET_FORMAT_SUBTYPE,
               &format_info, sizeof (format_info));
 
   return format_info.format & SF_FORMAT_SUBMASK;
}

Referenced by anonymous_namespace{ExportPCM.cpp}::GetEncodings(), and ImportRawDialog::ImportRawDialog().

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sf_encoding_name()

wxString sf_encoding_name

(

int

encoding_num

)

Get the string name of the specified data encoding.

AND encoding_num with SF_FORMAT_SUBMASK to get only the data encoding and then use SFC_GET_FORMAT_INFO to get the description

Parameters

encoding_num

the libsndfile encoding to get the name for (only the data encoding is used)

Definition at line 152 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = (encoding & SF_FORMAT_SUBMASK);
   sf_command(NULL, SFC_GET_FORMAT_INFO, &format_info, sizeof(format_info));
 
   return sf_normalize_name(format_info.name);
}

References sf_normalize_name().

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sf_get_all_extensions()

FileExtensions sf_get_all_extensions

(

)

Definition at line 236 of file FileFormats.cpp.

{
   FileExtensions exts;
   SF_FORMAT_INFO format_info;
   int count, k;
 
   memset(&format_info, 0, sizeof(format_info));
 
   sf_command(NULL, SFC_GET_FORMAT_MAJOR_COUNT,
              &count, sizeof(count));
 
   for(k=0; k<count; k++) {
      format_info.format = k;
      sf_command(NULL, SFC_GET_FORMAT_MAJOR,
                 &format_info, sizeof (format_info)) ;
 
      exts.push_back(LAT1CTOWX(format_info.extension));
   }
 
   // Some other extensions that are often sound files
   // but aren't included by libsndfile
 
   exts.insert( exts.end(), {
      wxT("aif") , // AIFF file with a DOS-style extension
      wxT("ircam") ,
      wxT("snd") ,
      wxT("svx") ,
      wxT("svx8") ,
      wxT("sv16") ,
   } );
 
   return exts;
}

References exts, and LAT1CTOWX.

sf_header_extension()

wxString sf_header_extension

(

int

format

)

Get the most common file extension for the given format.

AND the given format with SF_FORMAT_TYPEMASK to get just the container format, then retrieve the most common extension using SFC_GET_FORMAT_INFO.

Parameters

format

the libsndfile format to get the name for (only the container part is used)

Definition at line 141 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = (format & SF_FORMAT_TYPEMASK);
   sf_command(NULL, SFC_GET_FORMAT_INFO, &format_info, sizeof(format_info));
 
   return LAT1CTOWX(format_info.extension);
}

References anonymous_namespace{ExportPCM.cpp}::format, and LAT1CTOWX.

Referenced by ExportPCM::GetFormatInfo().

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sf_header_index_name()

wxString sf_header_index_name

(

int

format_num

)

Get the name of a container format from libsndfile.

Uses SFC_GET_FORMAT_MAJOR in the sf_command() interface. Resulting C string from libsndfile is converted to a wxString

Parameters

format_num

The libsndfile format number for the container format required

Definition at line 42 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = format;
   sf_command(NULL, SFC_GET_FORMAT_MAJOR,
              &format_info, sizeof (format_info)) ;
 
   return LAT1CTOWX(format_info.name);
}

References anonymous_namespace{ExportPCM.cpp}::format, and LAT1CTOWX.

Referenced by anonymous_namespace{ExportPCM.cpp}::ExportOptionsSFEditor::ExportOptionsSFEditor().

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sf_header_index_to_type()

unsigned int sf_header_index_to_type

(

int

i

)

Definition at line 54 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info ;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = i;
   sf_command (NULL, SFC_GET_FORMAT_MAJOR,
               &format_info, sizeof (format_info));
 
   return format_info.format & SF_FORMAT_TYPEMASK;
}

Referenced by anonymous_namespace{ExportPCM.cpp}::ExportOptionsSFEditor::ExportOptionsSFEditor().

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sf_header_mactype()

static OSType sf_header_mactype ( int  format )

static

Definition at line 318 of file FileFormats.cpp.

{
   if (format >= 0x10000)
      return MacNames[(format/0x10000)-1];
   else if (format>=0 && format<NUM_HEADERS)
      return MacNames[format];
   else
      return '\?\?\?\?';
}

References anonymous_namespace{ExportPCM.cpp}::format, MacNames, and NUM_HEADERS.

sf_header_name()

wxString sf_header_name

(

int

format

)

Get the string name of the specified container format.

AND format with SF_FORMAT_TYPEMASK to get only the container format and then use SFC_GET_FORMAT_INFO to get the description

Parameters

format

the libsndfile format to get the name for (only the container part is used)

Definition at line 106 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = (format & SF_FORMAT_TYPEMASK);
   sf_command(NULL, SFC_GET_FORMAT_INFO, &format_info, sizeof(format_info));
 
   return LAT1CTOWX(format_info.name);
}

References anonymous_namespace{ExportPCM.cpp}::format, and LAT1CTOWX.

Referenced by PCMImportFileHandle::GetFileDescription(), and PCMExportProcessor::Initialize().

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sf_header_shortname()

wxString sf_header_shortname

(

int

format

)

Get an abbreviated form of the string name of the specified format.

Do sf_header_name() then truncate the string at the first space in the name to get just the first word of the format name.

Parameters

format

the libsndfile format to get the name for (only the container part is used)

Definition at line 117 of file FileFormats.cpp.

{
   SF_FORMAT_INFO format_info;
   int i;
   wxString s;
 
   memset(&format_info, 0, sizeof(format_info));
   format_info.format = (format & SF_FORMAT_TYPEMASK);
   sf_command(NULL, SFC_GET_FORMAT_INFO, &format_info, sizeof(format_info));
 
   MallocString<> tmp { strdup( format_info.name ) };
   i = 0;
   while(tmp[i]) {
      if (tmp[i]==' ')
         tmp[i] = 0;
      else
         i++;
   }
 
   s = LAT1CTOWX(tmp.get());
 
   return s;
}

References anonymous_namespace{ExportPCM.cpp}::format, and LAT1CTOWX.

Referenced by ExportPCM::GetFormatInfo(), anonymous_namespace{ExportPCM.cpp}::LoadEncoding(), and anonymous_namespace{ExportPCM.cpp}::SaveEncoding().

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sf_normalize_name()

wxString sf_normalize_name

(

const char *

name

)

Definition at line 270 of file FileFormats.cpp.

{
   wxString n = LAT1CTOWX(name);
 
   n.Replace(wxT("8 bit"), wxT("8-bit"));
   n.Replace(wxT("16 bit"), wxT("16-bit"));
   n.Replace(wxT("24 bit"), wxT("24-bit"));
   n.Replace(wxT("32 bit"), wxT("32-bit"));
   n.Replace(wxT("64 bit"), wxT("64-bit"));
 
   return n;
}

References LAT1CTOWX, name, and wxT().

Referenced by sf_encoding_index_name(), and sf_encoding_name().

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sf_num_encodings()

int sf_num_encodings

(

)

Get the number of data encodings libsndfile supports (in any container or none.

Definition at line 70 of file FileFormats.cpp.

{
   int count ;
 
   sf_command (NULL, SFC_GET_FORMAT_SUBTYPE_COUNT, &count, sizeof (int)) ;
 
   return count;
}

Referenced by anonymous_namespace{ExportPCM.cpp}::GetEncodings(), and ImportRawDialog::ImportRawDialog().

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sf_num_headers()

int sf_num_headers

(

)

Get the number of container formats supported by libsndfile.

Uses SFC_GET_FORMAT_MAJOR_COUNT in sf_command interface

Definition at line 32 of file FileFormats.cpp.

{
   int count;
 
   sf_command(NULL, SFC_GET_FORMAT_MAJOR_COUNT,
              &count, sizeof(count));
 
   return count;
}

Referenced by anonymous_namespace{ExportPCM.cpp}::ExportOptionsSFEditor::ExportOptionsSFEditor().

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sf_num_simple_formats()

int sf_num_simple_formats

(

)

Definition at line 163 of file FileFormats.cpp.

{
   int count ;
 
   sf_command (NULL, SFC_GET_SIMPLE_FORMAT_COUNT, &count, sizeof (int)) ;
 
   return count;
}

sf_simple_format()

SF_FORMAT_INFO * sf_simple_format

(

int

i

)

Definition at line 174 of file FileFormats.cpp.

{
   memset(&g_format_info, 0, sizeof(g_format_info));
 
   g_format_info.format = i;
   sf_command (NULL, SFC_GET_SIMPLE_FORMAT,
               &g_format_info, sizeof(g_format_info));
 
   return &g_format_info;
}

References g_format_info.

sf_subtype_bytes_per_sample()

int sf_subtype_bytes_per_sample

(

unsigned int

format

)

Definition at line 202 of file FileFormats.cpp.

                                                    {
   unsigned int subtype = format & SF_FORMAT_SUBMASK;
   if( subtype == SF_FORMAT_PCM_S8 )
      return 1;
   if( subtype == SF_FORMAT_PCM_U8 )
      return 1;
   if( subtype == SF_FORMAT_PCM_16 )
      return 2;
   if( subtype == SF_FORMAT_PCM_24 )
      return 3;
   if( subtype == SF_FORMAT_PCM_32 )
      return 4;
   if( subtype == SF_FORMAT_FLOAT )
      return 4;
   if( subtype == SF_FORMAT_DOUBLE )
      return 8;
 
   // might be different to 2, but this is good enough for 
   // WAV and AIFF file size error trapping.
   return 2;
}

References anonymous_namespace{ExportPCM.cpp}::format.

Referenced by PCMExportProcessor::Initialize().

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sf_subtype_is_integer()

bool sf_subtype_is_integer

(

unsigned int

format

)

Definition at line 194 of file FileFormats.cpp.

{
   unsigned int subtype = format & SF_FORMAT_SUBMASK;
   return (subtype == SF_FORMAT_PCM_16 ||
           subtype == SF_FORMAT_PCM_24 ||
           subtype == SF_FORMAT_PCM_32);
}

References anonymous_namespace{ExportPCM.cpp}::format.

Referenced by AUPImportFileHandle::AddSamples(), and PCMExportProcessor::Initialize().

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sf_subtype_more_than_16_bits()

bool sf_subtype_more_than_16_bits

(

unsigned int

format

)

Definition at line 185 of file FileFormats.cpp.

{
   unsigned int subtype = format & SF_FORMAT_SUBMASK;
   return (subtype == SF_FORMAT_FLOAT ||
           subtype == SF_FORMAT_DOUBLE ||
           subtype == SF_FORMAT_PCM_24 ||
           subtype == SF_FORMAT_PCM_32);
}

References anonymous_namespace{ExportPCM.cpp}::format.

Referenced by AUPImportFileHandle::AddSamples(), PCMExportProcessor::Initialize(), and sf_subtype_to_effective_format().

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sf_subtype_to_effective_format()

sampleFormat sf_subtype_to_effective_format

(

unsigned int

format

)

Choose the narrowest value in the sampleFormat enumeration for a given libsndfile format.

Definition at line 224 of file FileFormats.cpp.

{
   unsigned int subtype = format & SF_FORMAT_SUBMASK;
   if (subtype == SF_FORMAT_PCM_24)
      return int24Sample;
   else if (sf_subtype_more_than_16_bits(format))
      return widestSampleFormat;
   else
      return int16Sample;
}

References anonymous_namespace{ExportPCM.cpp}::format, int16Sample, int24Sample, sf_subtype_more_than_16_bits(), and widestSampleFormat.

Referenced by ImportRaw(), and PCMImportFileHandle::PCMImportFileHandle().

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Variable Documentation

g_format_info

SF_FORMAT_INFO g_format_info

static

Definition at line 172 of file FileFormats.cpp.

Referenced by sf_simple_format().

MacNames

OSType MacNames[NUM_HEADERS]

Initial value:

= {
   'WAVE', 
   'AIFF', 
   'NeXT', 
   'BINA', 
   'PAR ', 
   '8SVX', 
   'NIST', 
   'VOC ', 
   '\?\?\?\?', 
   'SF  ', 
   'W64 ', 
   'MAT4', 
   'MAT5', 
}

Definition at line 302 of file FileFormats.cpp.

Referenced by sf_header_mactype().