Funkwhale
/
strawberry-audio-player-windows-mac-linux
mirror of https://github.com/strawberrymusicplayer/strawberry
1
0
Fork 0
Code Issues Releases Wiki Activity
strawberry-audio-player-win.../3rdparty/taglib/mpeg/id3v2/frames/chapterframe.cpp

294 lines
8.4 KiB
C++
Raw Blame History

/***************************************************************************
copyright : (C) 2013 by Lukas Krejci
email : krejclu6@fel.cvut.cz
***************************************************************************/
/***************************************************************************
* 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 <cstdio>
#include "tbytevectorlist.h"
#include "tpropertymap.h"
#include "tdebug.h"
#include "chapterframe.h"
using namespace Strawberry_TagLib::TagLib;
using namespace ID3v2;
class ChapterFrame::ChapterFramePrivate {
public:
explicit ChapterFramePrivate() : tagHeader(nullptr),
startTime(0),
endTime(0),
startOffset(0),
endOffset(0) {
embeddedFrameList.setAutoDelete(true);
}
const ID3v2::Header *tagHeader;
ByteVector elementID;
unsigned int startTime;
unsigned int endTime;
unsigned int startOffset;
unsigned int endOffset;
FrameListMap embeddedFrameListMap;
FrameList embeddedFrameList;
};
////////////////////////////////////////////////////////////////////////////////
// public methods
////////////////////////////////////////////////////////////////////////////////
ChapterFrame::ChapterFrame(const ID3v2::Header *tagHeader, const ByteVector &data) : ID3v2::Frame(data), d(new ChapterFramePrivate()) {
d->tagHeader = tagHeader;
setData(data);
}
ChapterFrame::ChapterFrame(const ByteVector &elementID, unsigned int startTime, unsigned int endTime, unsigned int startOffset, unsigned int endOffset, const FrameList &embeddedFrames) : ID3v2::Frame("CHAP"), d(new ChapterFramePrivate()) {
// setElementID has a workaround for a previously silly API where you had to specifically include the null byte.
setElementID(elementID);
d->startTime = startTime;
d->endTime = endTime;
d->startOffset = startOffset;
d->endOffset = endOffset;
for (FrameList::ConstIterator it = embeddedFrames.begin();
it != embeddedFrames.end();
++it)
addEmbeddedFrame(*it);
}
ChapterFrame::~ChapterFrame() {
delete d;
}
ByteVector ChapterFrame::elementID() const {
return d->elementID;
}
unsigned int ChapterFrame::startTime() const {
return d->startTime;
}
unsigned int ChapterFrame::endTime() const {
return d->endTime;
}
unsigned int ChapterFrame::startOffset() const {
return d->startOffset;
}
unsigned int ChapterFrame::endOffset() const {
return d->endOffset;
}
void ChapterFrame::setElementID(const ByteVector &eID) {
d->elementID = eID;
if (d->elementID.endsWith(char(0)))
d->elementID = d->elementID.mid(0, d->elementID.size() - 1);
}
void ChapterFrame::setStartTime(const unsigned int &sT) {
d->startTime = sT;
}
void ChapterFrame::setEndTime(const unsigned int &eT) {
d->endTime = eT;
}
void ChapterFrame::setStartOffset(const unsigned int &sO) {
d->startOffset = sO;
}
void ChapterFrame::setEndOffset(const unsigned int &eO) {
d->endOffset = eO;
}
const FrameListMap &ChapterFrame::embeddedFrameListMap() const {
return d->embeddedFrameListMap;
}
const FrameList &ChapterFrame::embeddedFrameList() const {
return d->embeddedFrameList;
}
const FrameList &ChapterFrame::embeddedFrameList(const ByteVector &frameID) const {
return d->embeddedFrameListMap[frameID];
}
void ChapterFrame::addEmbeddedFrame(Frame *frame) {
d->embeddedFrameList.append(frame);
d->embeddedFrameListMap[frame->frameID()].append(frame);
}
void ChapterFrame::removeEmbeddedFrame(Frame *frame, bool del) {
// remove the frame from the frame list
FrameList::Iterator it = d->embeddedFrameList.find(frame);
d->embeddedFrameList.erase(it);
// ...and from the frame list map
it = d->embeddedFrameListMap[frame->frameID()].find(frame);
d->embeddedFrameListMap[frame->frameID()].erase(it);
// ...and delete as desired
if (del)
delete frame;
}
void ChapterFrame::removeEmbeddedFrames(const ByteVector &id) {
FrameList l = d->embeddedFrameListMap[id];
for (FrameList::ConstIterator it = l.begin(); it != l.end(); ++it)
removeEmbeddedFrame(*it, true);
}
String ChapterFrame::toString() const {
String s = String(d->elementID) +
": start time: " + String::number(d->startTime) +
", end time: " + String::number(d->endTime);
if (d->startOffset != 0xFFFFFFFF)
s += ", start offset: " + String::number(d->startOffset);
if (d->endOffset != 0xFFFFFFFF)
s += ", end offset: " + String::number(d->endOffset);
if (!d->embeddedFrameList.isEmpty()) {
StringList frameIDs;
for (FrameList::ConstIterator it = d->embeddedFrameList.begin();
it != d->embeddedFrameList.end();
++it)
frameIDs.append((*it)->frameID());
s += ", sub-frames: [ " + frameIDs.toString(", ") + " ]";
}
return s;
}
PropertyMap ChapterFrame::asProperties() const {
PropertyMap map;
map.unsupportedData().append(frameID() + String("/") + d->elementID);
return map;
}
ChapterFrame *ChapterFrame::findByElementID(const ID3v2::Tag *tag, const ByteVector &eID) { // static
ID3v2::FrameList comments = tag->frameList("CHAP");
for (ID3v2::FrameList::ConstIterator it = comments.begin();
it != comments.end();
++it) {
ChapterFrame *frame = dynamic_cast<ChapterFrame *>(*it);
if (frame && frame->elementID() == eID)
return frame;
}
return nullptr;
}
void ChapterFrame::parseFields(const ByteVector &data) {
size_t size = data.size();
if (size < 18) {
debug("A CHAP frame must contain at least 18 bytes (1 byte element ID "
"terminated by null and 4x4 bytes for start and end time and offset).");
return;
}
size_t pos = 0;
size_t embPos = 0;
d->elementID = readStringField(data, String::Latin1, pos).data(String::Latin1);
d->startTime = data.toUInt32BE(pos);
pos += 4;
d->endTime = data.toUInt32BE(pos);
pos += 4;
d->startOffset = data.toUInt32BE(pos);
pos += 4;
d->endOffset = data.toUInt32BE(pos);
pos += 4;
size -= pos;
// Embedded frames are optional
if (size < header()->size())
return;
while (embPos < size - header()->size()) {
Frame *frame = FrameFactory::instance()->createFrame(data.mid(pos + embPos), d->tagHeader);
if (!frame)
return;
// Checks to make sure that frame parsed correctly.
if (frame->size() <= 0) {
delete frame;
return;
}
embPos += frame->size() + header()->size();
addEmbeddedFrame(frame);
}
}
ByteVector ChapterFrame::renderFields() const {
ByteVector data;
data.append(d->elementID);
data.append('\0');
data.append(ByteVector::fromUInt32BE(d->startTime));
data.append(ByteVector::fromUInt32BE(d->endTime));
data.append(ByteVector::fromUInt32BE(d->startOffset));
data.append(ByteVector::fromUInt32BE(d->endOffset));
FrameList l = d->embeddedFrameList;
for (FrameList::ConstIterator it = l.begin(); it != l.end(); ++it)
data.append((*it)->render());
return data;
}
ChapterFrame::ChapterFrame(const ID3v2::Header *tagHeader, const ByteVector &data, Header *h) : Frame(h), d(new ChapterFramePrivate()) {
d->tagHeader = tagHeader;
parseFields(fieldData(data));
}
Reference in New Issue View Git Blame Copy Permalink