VirtualAudioFile.cpp File Reference

#include "config.h"
#include <QIODevice>
#include <stdlib.h>
#include <unistd.h>
#include "libkwave/Utils.h"
#include "libkwave/VirtualAudioFile.h"

Include dependency graph for VirtualAudioFile.cpp:

Go to the source code of this file.

Functions
static void	_handle_audiofile_error (long int error, const char *str)
static long	_lastAudiofileError ()
static ssize_t	af_file_read (AFvirtualfile *vfile, void *data, size_t nbytes)
static AFfileoffset	af_file_length (AFvirtualfile *vfile)
static ssize_t	af_file_write (AFvirtualfile *vfile, const void *data, size_t nbytes)
static void	af_file_destroy (AFvirtualfile *)
static AFfileoffset	af_file_seek (AFvirtualfile *vfile, AFfileoffset offset, int is_relative)
static AFfileoffset	af_file_tell (AFvirtualfile *vfile)
static AFvirtualfile *	__af_virtual_file_new (void)

Variables
static QMap< AFvirtualfile *, Kwave::VirtualAudioFile * > *	_adapter_map = Q_NULLPTR
static long	_last_audiofile_error = -1
static QString	_last_audiofile_error_text

Function Documentation

__af_virtual_file_new()

static AFvirtualfile* __af_virtual_file_new ( void  )

static

Replacement of af_virtual_file_new from original libaudiofile code. Unfortunately the original is not usable because it is not available through the shared library API of some libaudiofile versions.

original version: see libaudiofile/af_vfs.c (GPL 2+) original author: Copyright (C) 1999, Elliot Lee sopwi.nosp@m.th@r.nosp@m.edhat.nosp@m..com

Definition at line 129 of file VirtualAudioFile.cpp.

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    return static_cast<AFvirtualfile *>(calloc(sizeof(AFvirtualfile), 1));
}

Here is the caller graph for this function:

_handle_audiofile_error()

static void _handle_audiofile_error ( long int  error, const char *  str  )

static

Error handler for libaudiofile

Warning

NOT THREADSAFE!

Parameters

error	the numeric error code, >=0, defined in audiofile.h, something starting with AF_BAD_...
str	text, not localized, so not usable for us :-(

Definition at line 46 of file VirtualAudioFile.cpp.

References _last_audiofile_error, and _last_audiofile_error_text.

Referenced by Kwave::VirtualAudioFile::open().

{
    qDebug("libaudiofile error %ld: '%s'", error, str);
    _last_audiofile_error = error;
    _last_audiofile_error_text = QString::fromLatin1(str);
}

Here is the caller graph for this function:

_lastAudiofileError()

static long _lastAudiofileError ( )

static

Returns the last libaudiofile error and resets it to -1

Definition at line 55 of file VirtualAudioFile.cpp.

References _last_audiofile_error.

Referenced by Kwave::VirtualAudioFile::open().

{
    long err = _last_audiofile_error;
    _last_audiofile_error = -1;

    // ignore "bad alloc", which might occur on a "malloc(0)"
    if (err == AF_BAD_MALLOC) err = -1;
    return err;
}

Here is the caller graph for this function:

af_file_destroy()

static void af_file_destroy ( AFvirtualfile *  )

static

Definition at line 97 of file VirtualAudioFile.cpp.

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
}

Here is the caller graph for this function:

af_file_length()

static AFfileoffset af_file_length ( AFvirtualfile *  vfile )

static

Definition at line 78 of file VirtualAudioFile.cpp.

References Kwave::VirtualAudioFile::adapter(), and Kwave::VirtualAudioFile::length().

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    Kwave::VirtualAudioFile *adapter = Kwave::VirtualAudioFile::adapter(vfile);
    return (adapter) ? static_cast<AFfileoffset>(adapter->length()) : -1;
}

Here is the call graph for this function:

Here is the caller graph for this function:

af_file_read()

static ssize_t af_file_read ( AFvirtualfile *  vfile, void *  data, size_t  nbytes  )

static

Definition at line 66 of file VirtualAudioFile.cpp.

References Kwave::VirtualAudioFile::adapter(), Kwave::VirtualAudioFile::read(), and Kwave::toUint().

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    Kwave::VirtualAudioFile *adapter = Kwave::VirtualAudioFile::adapter(vfile);
    return (adapter) ?
        static_cast<ssize_t>(adapter->read(
            static_cast<char *>(data),
            Kwave::toUint(nbytes)
        )) : 0;
}

Here is the call graph for this function:

Here is the caller graph for this function:

af_file_seek()

static AFfileoffset af_file_seek ( AFvirtualfile *  vfile, AFfileoffset  offset, int  is_relative  )

static

Definition at line 102 of file VirtualAudioFile.cpp.

References Kwave::VirtualAudioFile::adapter(), and Kwave::VirtualAudioFile::seek().

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    Kwave::VirtualAudioFile *adapter = Kwave::VirtualAudioFile::adapter(vfile);
    return (adapter) ?
        static_cast<AFfileoffset>(adapter->seek(
            static_cast<qint64>(offset),
            (is_relative != 0)
        )) : -1;
}

Here is the call graph for this function:

Here is the caller graph for this function:

af_file_tell()

static AFfileoffset af_file_tell ( AFvirtualfile *  vfile )

static

Definition at line 114 of file VirtualAudioFile.cpp.

References Kwave::VirtualAudioFile::adapter(), and Kwave::VirtualAudioFile::tell().

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    Kwave::VirtualAudioFile *adapter = Kwave::VirtualAudioFile::adapter(vfile);
    return (adapter) ? static_cast<AFfileoffset>(adapter->tell()) : -1;
}

Here is the call graph for this function:

Here is the caller graph for this function:

af_file_write()

static ssize_t af_file_write ( AFvirtualfile *  vfile, const void *  data, size_t  nbytes  )

static

Definition at line 85 of file VirtualAudioFile.cpp.

References Kwave::VirtualAudioFile::adapter(), Kwave::toUint(), and Kwave::VirtualAudioFile::write().

Referenced by Kwave::VirtualAudioFile::VirtualAudioFile().

{
    Kwave::VirtualAudioFile *adapter = Kwave::VirtualAudioFile::adapter(vfile);
    return (adapter) ?
        static_cast<ssize_t>(adapter->write(
            static_cast<const char *>(data),
            Kwave::toUint(nbytes)
        )) : 0;
}

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

_adapter_map

QMap<AFvirtualfile*, Kwave::VirtualAudioFile*>* _adapter_map = Q_NULLPTR

static

map for finding the corresponding VirtualAudioFile adapter to a AFvirtualfile from libaudiofile

Definition at line 30 of file VirtualAudioFile.cpp.

Referenced by Kwave::VirtualAudioFile::adapter(), Kwave::VirtualAudioFile::close(), and Kwave::VirtualAudioFile::open().

_last_audiofile_error

long _last_audiofile_error = -1

static

Last error number from libaudiofile. -1 if no error occurred

Definition at line 33 of file VirtualAudioFile.cpp.

Referenced by _handle_audiofile_error(), and _lastAudiofileError().

_last_audiofile_error_text

QString _last_audiofile_error_text

static

Last error text from libaudiofile, empty if no error occurred

Definition at line 36 of file VirtualAudioFile.cpp.

Referenced by _handle_audiofile_error(), and Kwave::VirtualAudioFile::open().