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/*----------------------------------------------------------------------------
libtunepimp -- The MusicBrainz tagging library.
Let a thousand taggers bloom!
Copyright (C) Robert Kaye 2003
This file is part of libtunepimp.
libtunepimp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libtunepimp 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with libtunepimp; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: flac.cpp 1441 2005-12-18 19:16:49Z luks $
----------------------------------------------------------------------------*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#ifdef WIN32
#include <winsock.h>
#else
#include <netinet/in.h>
#include <sys/param.h>
#endif
#include "plugin.h"
#include "flacdecode.h"
#include "flac_meta.h"
extern "C"
{
/*-------------------------------------------------------------------------*/
#ifndef WIN32
#define initPlugin flacInitPlugin
#endif
Plugin *initPlugin (void);
static void flacShutdown (void);
static const char *flacGetVersion (void);
static const char *flacGetName (void);
static int flacGetNumFormats(void);
static int flacGetFormat (int, char ext[TP_EXTENSION_LEN],
char desc[TP_PLUGIN_DESC_LEN], int *functions);
static const char *flacGetError (void);
static int flacWriteMetadata(const metadata_t *mdata, const char *fileName, int flags, const char *encoding);
static int flacReadMetadata (metadata_t *mdata, const char *fileName, int flags, const char *encoding);
static unsigned long flacGetDuration (const char *file, int flags, const char *encoding);
static void *flacDecodeStart (const char *file, int flags, const char *encoding);
static int flacDecodeInfo (void *decode,
unsigned long *duration,
unsigned int *samplesPerSecond,
unsigned int *bitsPerSample,
unsigned int *channels);
static int flacDecodeRead (void *decode, char *data, int maxBytes);
static void flacDecodeEnd (void *decode);
/*-------------------------------------------------------------------------*/
#define PLUGIN_VERSION "1.0.0"
#define PLUGIN_NAME "FLAC decoder & metadata reader/writer"
static char *errorString = "";
/*-------------------------------------------------------------------------*/
static Plugin methods =
{
flacShutdown,
flacGetVersion,
flacGetName,
flacGetNumFormats,
flacGetFormat,
flacGetError,
flacReadMetadata,
flacWriteMetadata,
flacGetDuration,
flacDecodeStart,
flacDecodeInfo,
flacDecodeRead,
flacDecodeEnd
};
/*-------------------------------------------------------------------------*/
Plugin *initPlugin(void)
{
return &methods;
}
static void flacShutdown(void)
{
if (strlen(errorString))
free(errorString);
}
static const char *flacGetVersion(void)
{
return PLUGIN_VERSION;
}
static const char *flacGetName(void)
{
return PLUGIN_NAME;
}
static int flacGetNumFormats(void)
{
return 1;
}
static int flacGetFormat(int i, char ext[TP_EXTENSION_LEN],
char desc[TP_PLUGIN_DESC_LEN], int *functions)
{
if (i > 0)
return 0;
strcpy(ext, ".flac");
strcpy(desc, "FLAC Lossless audio format");
*functions = TP_PLUGIN_FUNCTION_DECODE | TP_PLUGIN_FUNCTION_METADATA;
return 1;
}
static const char *flacGetError(void)
{
return errorString;
}
static void setError(const string &err)
{
if (err.length())
{
if (errorString)
free(errorString);
errorString = strdup(err.c_str());
}
}
static int flacReadMetadata(metadata_t *mdata, const char *fileName, int flags, const char *encoding)
{
Metadata data;
FLAC flac(encoding);
if (flac.read(fileName, data))
{
data.writeToC(mdata);
return 1;
}
else
{
string err;
flac.getError(err);
setError(err);
}
return 0;
}
static int flacWriteMetadata(const metadata_t *mdata, const char *fileName, int flags, const char *encoding)
{
Metadata data;
FLAC flac(encoding);
data.readFromC(mdata);
int ret = flac.write(fileName, data, (flags & TP_PLUGIN_FLAGS_GENERAL_CLEAR_TAGS) != 0);
if (!ret)
{
string err;
flac.getError(err);
setError(err);
}
return ret;
}
static unsigned long flacGetDuration(const char *fileName, int flags, const char *encoding)
{
FlacDecode *decode;
unsigned long duration;
unsigned int samplesPerSecond, bitsPerSample, channels;
decode = new FlacDecode(fileName, encoding);
if (!decode)
return 0;
if (!decode->getInfo(duration, samplesPerSecond, bitsPerSample, channels))
duration = 0;
delete decode;
return duration;
}
static void *flacDecodeStart(const char *fileName, int flags, const char *encoding)
{
return (void *)new FlacDecode(fileName, encoding);
}
static int flacDecodeInfo(void *decode,
unsigned long *duration,
unsigned int *samplesPerSecond,
unsigned int *bitsPerSample,
unsigned int *channels)
{
return ((FlacDecode *)decode)->getInfo(*duration, *samplesPerSecond, *bitsPerSample, *channels);
}
static int flacDecodeRead(void *decode, char *data, int maxBytes)
{
return ((FlacDecode *)decode)->read(data, maxBytes);
}
static void flacDecodeEnd(void *decode)
{
delete (FlacDecode *)decode;
}
} // extern "C"
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