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/***************************************************************************
copyright : (C) 2008 by Scott Wheeler
email : wheeler@kde.org
***************************************************************************/
/***************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License version *
* 2.1 as published by the Free Software Foundation. *
* *
* This library 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 library; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
* 02110-1301 USA *
* *
* Alternatively, this file is available under the Mozilla Public *
* License Version 1.1. You may obtain a copy of the License at *
* http://www.mozilla.org/MPL/ *
***************************************************************************/
#include <tbytevector.h>
#include <tdebug.h>
#include <tstringlist.h>
#include <tpropertymap.h>
#include <tagutils.h>
#include "wavfile.h"
#include "id3v2tag.h"
#include "infotag.h"
#include "tagunion.h"
using namespace TagLib;
namespace
{
enum { ID3v2Index = 0, InfoIndex = 1 };
}
class RIFF::WAV::File::FilePrivate
{
public:
FilePrivate() :
properties(0),
hasID3v2(false),
hasInfo(false) {}
~FilePrivate()
{
delete properties;
}
Properties *properties;
TagUnion tag;
bool hasID3v2;
bool hasInfo;
};
////////////////////////////////////////////////////////////////////////////////
// static members
////////////////////////////////////////////////////////////////////////////////
bool RIFF::WAV::File::isSupported(IOStream *stream)
{
// A WAV file has to start with "RIFF????WAVE".
const ByteVector id = Utils::readHeader(stream, 12, false);
return (id.startsWith("RIFF") && id.containsAt("WAVE", 8));
}
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
RIFF::WAV::File::File(FileName file, bool readProperties, Properties::ReadStyle) :
RIFF::File(file, LittleEndian),
d(new FilePrivate())
{
if(isOpen())
read(readProperties);
}
RIFF::WAV::File::File(IOStream *stream, bool readProperties, Properties::ReadStyle) :
RIFF::File(stream, LittleEndian),
d(new FilePrivate())
{
if(isOpen())
read(readProperties);
}
RIFF::WAV::File::~File()
{
delete d;
}
ID3v2::Tag *RIFF::WAV::File::tag() const
{
return ID3v2Tag();
}
ID3v2::Tag *RIFF::WAV::File::ID3v2Tag() const
{
return d->tag.access<ID3v2::Tag>(ID3v2Index, false);
}
RIFF::Info::Tag *RIFF::WAV::File::InfoTag() const
{
return d->tag.access<RIFF::Info::Tag>(InfoIndex, false);
}
void RIFF::WAV::File::strip(TagTypes tags)
{
removeTagChunks(tags);
if(tags & ID3v2)
d->tag.set(ID3v2Index, new ID3v2::Tag());
if(tags & Info)
d->tag.set(InfoIndex, new RIFF::Info::Tag());
}
PropertyMap RIFF::WAV::File::properties() const
{
return d->tag.properties();
}
void RIFF::WAV::File::removeUnsupportedProperties(const StringList &unsupported)
{
d->tag.removeUnsupportedProperties(unsupported);
}
PropertyMap RIFF::WAV::File::setProperties(const PropertyMap &properties)
{
InfoTag()->setProperties(properties);
return ID3v2Tag()->setProperties(properties);
}
RIFF::WAV::Properties *RIFF::WAV::File::audioProperties() const
{
return d->properties;
}
bool RIFF::WAV::File::save()
{
return RIFF::WAV::File::save(AllTags);
}
bool RIFF::WAV::File::save(TagTypes tags, bool stripOthers, int id3v2Version)
{
return save(tags,
stripOthers ? StripOthers : StripNone,
id3v2Version == 3 ? ID3v2::v3 : ID3v2::v4);
}
bool RIFF::WAV::File::save(TagTypes tags, StripTags strip, ID3v2::Version version)
{
if(readOnly()) {
debug("RIFF::WAV::File::save() -- File is read only.");
return false;
}
if(!isValid()) {
debug("RIFF::WAV::File::save() -- Trying to save invalid file.");
return false;
}
if(strip == StripOthers)
File::strip(static_cast<TagTypes>(AllTags & ~tags));
if(tags & ID3v2) {
removeTagChunks(ID3v2);
if(ID3v2Tag() && !ID3v2Tag()->isEmpty()) {
setChunkData("ID3 ", ID3v2Tag()->render(version));
d->hasID3v2 = true;
}
}
if(tags & Info) {
removeTagChunks(Info);
if(InfoTag() && !InfoTag()->isEmpty()) {
setChunkData("LIST", InfoTag()->render(), true);
d->hasInfo = true;
}
}
return true;
}
bool RIFF::WAV::File::hasID3v2Tag() const
{
return d->hasID3v2;
}
bool RIFF::WAV::File::hasInfoTag() const
{
return d->hasInfo;
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void RIFF::WAV::File::read(bool readProperties)
{
for(unsigned int i = 0; i < chunkCount(); ++i) {
const ByteVector name = chunkName(i);
if(name == "ID3 " || name == "id3 ") {
if(!d->tag[ID3v2Index]) {
d->tag.set(ID3v2Index, new ID3v2::Tag(this, chunkOffset(i)));
d->hasID3v2 = true;
}
else {
debug("RIFF::WAV::File::read() - Duplicate ID3v2 tag found.");
}
}
else if(name == "LIST") {
const ByteVector data = chunkData(i);
if(data.startsWith("INFO")) {
if(!d->tag[InfoIndex]) {
d->tag.set(InfoIndex, new RIFF::Info::Tag(data));
d->hasInfo = true;
}
else {
debug("RIFF::WAV::File::read() - Duplicate INFO tag found.");
}
}
}
}
if(!d->tag[ID3v2Index])
d->tag.set(ID3v2Index, new ID3v2::Tag());
if(!d->tag[InfoIndex])
d->tag.set(InfoIndex, new RIFF::Info::Tag());
if(readProperties)
d->properties = new Properties(this, Properties::Average);
}
void RIFF::WAV::File::removeTagChunks(TagTypes tags)
{
if((tags & ID3v2) && d->hasID3v2) {
removeChunk("ID3 ");
removeChunk("id3 ");
d->hasID3v2 = false;
}
if((tags & Info) && d->hasInfo) {
for(int i = static_cast<int>(chunkCount()) - 1; i >= 0; --i) {
if(chunkName(i) == "LIST" && chunkData(i).startsWith("INFO"))
removeChunk(i);
}
d->hasInfo = false;
}
}
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