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/dsdiff/dsdifffile.cpp

920 lines
29 KiB
C++
Raw Blame History

/***************************************************************************
copyright : (C) 2016 by Damien Plisson, Audirvana
email : damien78@audirvana.com
***************************************************************************/
/***************************************************************************
* 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 <memory>
#include <array>
#include "tstring.h"
#include "tbytevector.h"
#include "tdebug.h"
#include "id3v2tag.h"
#include "tstringlist.h"
#include "tpropertymap.h"
#include "tagutils.h"
#include "tagunion.h"
#include "dsdifffile.h"
using namespace Strawberry_TagLib::TagLib;
namespace {
struct Chunk64 {
ByteVector name;
unsigned long long offset;
unsigned long long size;
char padding;
};
typedef std::vector<Chunk64> ChunkList;
int chunkIndex(const ChunkList &chunks, const ByteVector &id) {
for (unsigned long int i = 0; i < chunks.size(); i++) {
if (chunks[i].name == id)
return i;
}
return -1;
}
bool isValidChunkID(const ByteVector &name) {
if (name.size() != 4)
return false;
for (int i = 0; i < 4; i++) {
if (name[i] < 32)
return false;
}
return true;
}
enum {
ID3v2Index = 0,
DIINIndex = 1
};
enum {
PROPChunk = 0,
DIINChunk = 1
};
} // namespace
class DSDIFF::File::FilePrivate {
public:
FilePrivate() : endianness(BigEndian),
size(0),
isID3InPropChunk(false),
duplicateID3V2chunkIndex(-1),
id3v2TagChunkID("ID3 "),
hasID3v2(false),
hasDiin(false) {
childChunkIndex[ID3v2Index] = -1;
childChunkIndex[DIINIndex] = -1;
}
Endianness endianness;
ByteVector type;
unsigned long long size;
ByteVector format;
ChunkList chunks;
std::array<ChunkList, 2> childChunks;
std::array<int, 2> childChunkIndex;
/*
* Two possibilities can be found: ID3V2 chunk inside PROP chunk or at root level
*/
bool isID3InPropChunk;
/*
* ID3 chunks are present. This is then the index of the one in PROP chunk that
* will be removed upon next save to remove duplicates.
*/
int duplicateID3V2chunkIndex;
std::unique_ptr<AudioProperties> properties;
DoubleTagUnion tag;
ByteVector id3v2TagChunkID;
bool hasID3v2;
bool hasDiin;
};
////////////////////////////////////////////////////////////////////////////////
// static members
////////////////////////////////////////////////////////////////////////////////
bool DSDIFF::File::isSupported(IOStream *stream) {
// A DSDIFF file has to start with "FRM8????????DSD ".
const ByteVector id = Utils::readHeader(stream, 16, false);
return (id.startsWith("FRM8") && id.containsAt("DSD ", 12));
}
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
DSDIFF::File::File(FileName file, bool readProperties, AudioProperties::ReadStyle propertiesStyle) : Strawberry_TagLib::TagLib::File(file) {
d = new FilePrivate;
d->endianness = BigEndian;
if (isOpen())
read(readProperties, propertiesStyle);
}
DSDIFF::File::File(IOStream *stream, bool readProperties, AudioProperties::ReadStyle propertiesStyle) : Strawberry_TagLib::TagLib::File(stream) {
d = new FilePrivate;
d->endianness = BigEndian;
if (isOpen())
read(readProperties, propertiesStyle);
}
DSDIFF::File::~File() {
delete d;
}
Strawberry_TagLib::TagLib::Tag *DSDIFF::File::tag() const {
return &d->tag;
}
ID3v2::Tag *DSDIFF::File::ID3v2Tag(bool create) const {
return d->tag.access<ID3v2::Tag>(ID3v2Index, create);
}
bool DSDIFF::File::hasID3v2Tag() const {
return d->hasID3v2;
}
DSDIFF::DIIN::Tag *DSDIFF::File::DIINTag(bool create) const {
return d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, create);
}
bool DSDIFF::File::hasDIINTag() const {
return d->hasDiin;
}
PropertyMap DSDIFF::File::properties() const {
if (d->hasID3v2)
return d->tag.access<ID3v2::Tag>(ID3v2Index, false)->properties();
return PropertyMap();
}
void DSDIFF::File::removeUnsupportedProperties(const StringList &properties) {
if (d->hasID3v2)
d->tag.access<ID3v2::Tag>(ID3v2Index, false)->removeUnsupportedProperties(properties);
if (d->hasDiin)
d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, false)->removeUnsupportedProperties(properties);
}
PropertyMap DSDIFF::File::setProperties(const PropertyMap &properties) {
return d->tag.access<ID3v2::Tag>(ID3v2Index, true)->setProperties(properties);
}
DSDIFF::AudioProperties *DSDIFF::File::audioProperties() const {
return d->properties.get();
}
bool DSDIFF::File::save() {
return save(AllTags);
}
bool DSDIFF::File::save(TagTypes tags, StripTags, ID3v2::Version version) {
if (readOnly()) {
debug("DSDIFF::File::save() -- File is read only.");
return false;
}
if (!isValid()) {
debug("DSDIFF::File::save() -- Trying to save invalid file.");
return false;
}
//if(strip == StripOthers || strip == StripAll)
//File::strip(static_cast<TagTypes>(AllTags & ~tags));
// First: save ID3V2 chunk
ID3v2::Tag *id3v2Tag = d->tag.access<ID3v2::Tag>(ID3v2Index, false);
if (tags & ID3v2 && id3v2Tag) {
if (d->isID3InPropChunk) {
if (id3v2Tag && !id3v2Tag->isEmpty()) {
setChildChunkData(d->id3v2TagChunkID, id3v2Tag->render(version), PROPChunk);
d->hasID3v2 = true;
}
else {
// Empty tag: remove it
setChildChunkData(d->id3v2TagChunkID, ByteVector(), PROPChunk);
d->hasID3v2 = false;
}
}
else {
if (id3v2Tag && !id3v2Tag->isEmpty()) {
setRootChunkData(d->id3v2TagChunkID, id3v2Tag->render(version));
d->hasID3v2 = true;
}
else {
// Empty tag: remove it
setRootChunkData(d->id3v2TagChunkID, ByteVector());
d->hasID3v2 = false;
}
}
}
// Second: save the DIIN chunk
DSDIFF::DIIN::Tag *diinTag = d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, false);
if (tags & DIIN && diinTag) {
if (!diinTag->title().isEmpty()) {
ByteVector diinTitle;
if (d->endianness == BigEndian)
diinTitle.append(ByteVector::fromUInt32BE(diinTag->title().size()));
else
diinTitle.append(ByteVector::fromUInt32LE(diinTag->title().size()));
diinTitle.append(ByteVector::fromCString(diinTag->title().toCString()));
setChildChunkData("DITI", diinTitle, DIINChunk);
}
else
setChildChunkData("DITI", ByteVector(), DIINChunk);
if (!diinTag->artist().isEmpty()) {
ByteVector diinArtist;
if (d->endianness == BigEndian)
diinArtist.append(ByteVector::fromUInt32BE(diinTag->artist().size()));
else
diinArtist.append(ByteVector::fromUInt32LE(diinTag->artist().size()));
diinArtist.append(ByteVector::fromCString(diinTag->artist().toCString()));
setChildChunkData("DIAR", diinArtist, DIINChunk);
}
else
setChildChunkData("DIAR", ByteVector(), DIINChunk);
}
// Third: remove the duplicate ID3V2 chunk (inside PROP chunk) if any
if (d->duplicateID3V2chunkIndex >= 0) {
setChildChunkData(d->duplicateID3V2chunkIndex, ByteVector(), PROPChunk);
d->duplicateID3V2chunkIndex = -1;
}
return true;
}
void DSDIFF::File::strip(TagTypes tags) {
if (tags & ID3v2) {
removeRootChunk("ID3 ");
removeRootChunk("id3 ");
d->hasID3v2 = false;
d->tag.set(ID3v2Index, new ID3v2::Tag);
/// TODO: needs to also account for ID3v2 tags under the PROP chunk
}
if (tags & DIIN) {
removeRootChunk("DITI");
removeRootChunk("DIAR");
d->hasDiin = false;
d->tag.set(DIINIndex, new DIIN::Tag);
}
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void DSDIFF::File::removeRootChunk(unsigned int i) {
unsigned long long chunkSize = d->chunks[i].size + d->chunks[i].padding + 12;
d->size -= chunkSize;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
removeBlock(d->chunks[i].offset - 12, chunkSize);
// Update the internal offsets
for (unsigned long r = i + 1; r < d->chunks.size(); r++)
d->chunks[r].offset = d->chunks[r - 1].offset + 12 + d->chunks[r - 1].size + d->chunks[r - 1].padding;
d->chunks.erase(d->chunks.begin() + i);
}
void DSDIFF::File::removeRootChunk(const ByteVector &id) {
int i = chunkIndex(d->chunks, id);
if (i >= 0)
removeRootChunk(i);
}
void DSDIFF::File::setRootChunkData(unsigned int i, const ByteVector &data) {
if (data.isEmpty()) {
removeRootChunk(i);
return;
}
// Non null data: update chunk
// First we update the global size
d->size += ((data.size() + 1) & ~1) - (d->chunks[i].size + d->chunks[i].padding);
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
// Now update the specific chunk
writeChunk(d->chunks[i].name, data, d->chunks[i].offset - 12, d->chunks[i].size + d->chunks[i].padding + 12);
d->chunks[i].size = data.size();
d->chunks[i].padding = (data.size() & 0x01) ? 1 : 0;
// Finally update the internal offsets
updateRootChunksStructure(i + 1);
}
void DSDIFF::File::setRootChunkData(const ByteVector &name, const ByteVector &data) {
if (d->chunks.size() == 0) {
debug("DSDIFF::File::setPropChunkData - No valid chunks found.");
return;
}
int i = chunkIndex(d->chunks, name);
if (i >= 0) {
setRootChunkData(i, data);
return;
}
// Couldn't find an existing chunk, so let's create a new one.
i = d->chunks.size() - 1;
unsigned long offset = d->chunks[i].offset + d->chunks[i].size + d->chunks[i].padding;
// First we update the global size
d->size += (offset & 1) + ((data.size() + 1) & ~1) + 12;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
// Now add the chunk to the file
writeChunk(name,
data,
offset,
std::max<unsigned long long>(0, length() - offset),
(offset & 1) ? 1 : 0);
Chunk64 chunk;
chunk.name = name;
chunk.size = data.size();
chunk.offset = offset + 12;
chunk.padding = (data.size() & 0x01) ? 1 : 0;
d->chunks.push_back(chunk);
}
void DSDIFF::File::removeChildChunk(unsigned int i, unsigned int childChunkNum) {
ChunkList &childChunks = d->childChunks[childChunkNum];
// Update global size
unsigned long long removedChunkTotalSize = childChunks[i].size + childChunks[i].padding + 12;
d->size -= removedChunkTotalSize;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
// Update child chunk size
d->chunks[d->childChunkIndex[childChunkNum]].size -= removedChunkTotalSize;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
else
insert(ByteVector::fromUInt64LE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
// Remove the chunk
removeBlock(childChunks[i].offset - 12, removedChunkTotalSize);
// Update the internal offsets
// For child chunks
if ((i + 1) < childChunks.size()) {
childChunks[i + 1].offset = childChunks[i].offset;
i++;
for (i++; i < childChunks.size(); i++)
childChunks[i].offset = childChunks[i - 1].offset + 12 + childChunks[i - 1].size + childChunks[i - 1].padding;
}
// And for root chunks
for (i = d->childChunkIndex[childChunkNum] + 1; i < d->chunks.size(); i++)
d->chunks[i].offset = d->chunks[i - 1].offset + 12 + d->chunks[i - 1].size + d->chunks[i - 1].padding;
childChunks.erase(childChunks.begin() + i);
}
void DSDIFF::File::setChildChunkData(unsigned int i, const ByteVector &data, unsigned int childChunkNum) {
ChunkList &childChunks = d->childChunks[childChunkNum];
if (data.isEmpty()) {
removeChildChunk(i, childChunkNum);
return;
}
// Non null data: update chunk
// First we update the global size
d->size += ((data.size() + 1) & ~1) - (childChunks[i].size + childChunks[i].padding);
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
// And the PROP chunk size
d->chunks[d->childChunkIndex[childChunkNum]].size += ((data.size() + 1) & ~1) - (childChunks[i].size + childChunks[i].padding);
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
else
insert(ByteVector::fromUInt64LE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
// Now update the specific chunk
writeChunk(childChunks[i].name, data, childChunks[i].offset - 12, childChunks[i].size + childChunks[i].padding + 12);
childChunks[i].size = data.size();
childChunks[i].padding = (data.size() & 0x01) ? 1 : 0;
// Now update the internal offsets
// For child Chunks
for (i++; i < childChunks.size(); i++)
childChunks[i].offset = childChunks[i - 1].offset + 12 + childChunks[i - 1].size + childChunks[i - 1].padding;
// And for root chunks
updateRootChunksStructure(d->childChunkIndex[childChunkNum] + 1);
}
void DSDIFF::File::setChildChunkData(const ByteVector &name, const ByteVector &data, unsigned int childChunkNum) {
ChunkList &childChunks = d->childChunks[childChunkNum];
if (childChunks.size() == 0) {
debug("DSDIFF::File::setPropChunkData - No valid chunks found.");
return;
}
for (unsigned int i = 0; i < childChunks.size(); i++) {
if (childChunks[i].name == name) {
setChildChunkData(i, data, childChunkNum);
return;
}
}
// Do not attempt to remove a non existing chunk
if (data.isEmpty())
return;
// Couldn't find an existing chunk, so let's create a new one.
unsigned int i = childChunks.size() - 1;
unsigned long offset = childChunks[i].offset + childChunks[i].size + childChunks[i].padding;
// First we update the global size
d->size += (offset & 1) + ((data.size() + 1) & ~1) + 12;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->size), 4, 8);
else
insert(ByteVector::fromUInt64LE(d->size), 4, 8);
// And the child chunk size
d->chunks[d->childChunkIndex[childChunkNum]].size += (offset & 1) + ((data.size() + 1) & ~1) + 12;
if (d->endianness == BigEndian)
insert(ByteVector::fromUInt64BE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
else
insert(ByteVector::fromUInt64LE(d->chunks[d->childChunkIndex[childChunkNum]].size), d->chunks[d->childChunkIndex[childChunkNum]].offset - 8, 8);
// Now add the chunk to the file
unsigned long long nextRootChunkIdx = length();
if ((d->childChunkIndex[childChunkNum] + 1) < static_cast<int>(d->chunks.size()))
nextRootChunkIdx = d->chunks[d->childChunkIndex[childChunkNum] + 1].offset - 12;
writeChunk(name, data, offset,
std::max<unsigned long long>(0, nextRootChunkIdx - offset),
(offset & 1) ? 1 : 0);
// For root chunks
updateRootChunksStructure(d->childChunkIndex[childChunkNum] + 1);
Chunk64 chunk;
chunk.name = name;
chunk.size = data.size();
chunk.offset = offset + 12;
chunk.padding = (data.size() & 0x01) ? 1 : 0;
childChunks.push_back(chunk);
}
void DSDIFF::File::updateRootChunksStructure(unsigned int startingChunk) {
for (unsigned int i = startingChunk; i < d->chunks.size(); i++)
d->chunks[i].offset = d->chunks[i - 1].offset + 12 + d->chunks[i - 1].size + d->chunks[i - 1].padding;
// Update childchunks structure as well
if (d->childChunkIndex[PROPChunk] >= static_cast<int>(startingChunk)) {
ChunkList &childChunksToUpdate = d->childChunks[PROPChunk];
if (childChunksToUpdate.size() > 0) {
childChunksToUpdate[0].offset = d->chunks[d->childChunkIndex[PROPChunk]].offset + 12;
for (unsigned int i = 1; i < childChunksToUpdate.size(); i++)
childChunksToUpdate[i].offset = childChunksToUpdate[i - 1].offset + 12 + childChunksToUpdate[i - 1].size + childChunksToUpdate[i - 1].padding;
}
}
if (d->childChunkIndex[DIINChunk] >= static_cast<int>(startingChunk)) {
ChunkList &childChunksToUpdate = d->childChunks[DIINChunk];
if (childChunksToUpdate.size() > 0) {
childChunksToUpdate[0].offset = d->chunks[d->childChunkIndex[DIINChunk]].offset + 12;
for (unsigned int i = 1; i < childChunksToUpdate.size(); i++)
childChunksToUpdate[i].offset = childChunksToUpdate[i - 1].offset + 12 + childChunksToUpdate[i - 1].size + childChunksToUpdate[i - 1].padding;
}
}
}
void DSDIFF::File::read(bool readProperties, AudioProperties::ReadStyle propertiesStyle) {
bool bigEndian = (d->endianness == BigEndian);
d->type = readBlock(4);
d->size = bigEndian ? readBlock(8).toInt64BE(0) : readBlock(8).toInt64LE(0);
d->format = readBlock(4);
// + 12: chunk header at least, fix for additional junk bytes
while (tell() + 12 <= length()) {
ByteVector chunkName = readBlock(4);
unsigned long long chunkSize = bigEndian ? readBlock(8).toInt64BE(0) : readBlock(8).toInt64LE(0);
if (!isValidChunkID(chunkName)) {
debug("DSDIFF::File::read() -- Chunk '" + chunkName + "' has invalid ID");
setValid(false);
break;
}
if (static_cast<unsigned long long>(tell()) + chunkSize >
static_cast<unsigned long long>(length())) {
debug("DSDIFF::File::read() -- Chunk '" + chunkName + "' has invalid size (larger than the file size)");
setValid(false);
break;
}
Chunk64 chunk;
chunk.name = chunkName;
chunk.size = chunkSize;
chunk.offset = tell();
seek(chunk.size, Current);
// Check padding
chunk.padding = 0;
long uPosNotPadded = tell();
if ((uPosNotPadded & 0x01) != 0) {
ByteVector iByte = readBlock(1);
if ((iByte.size() != 1) || (iByte[0] != 0))
// Not well formed, re-seek
seek(uPosNotPadded, Beginning);
else
chunk.padding = 1;
}
d->chunks.push_back(chunk);
}
// For DSD uncompressed
unsigned long long lengthDSDSamplesTimeChannels = 0;
// For computing bitrate
unsigned long long audioDataSizeinBytes = 0;
// For DST compressed frames
unsigned long dstNumFrames = 0;
// For DST compressed frames
unsigned short dstFrameRate = 0;
for (unsigned int i = 0; i < d->chunks.size(); i++) {
if (d->chunks[i].name == "DSD ") {
lengthDSDSamplesTimeChannels = d->chunks[i].size * 8;
audioDataSizeinBytes = d->chunks[i].size;
}
else if (d->chunks[i].name == "DST ") {
// Now decode the chunks inside the DST chunk to read the DST Frame Information one
long long dstChunkEnd = d->chunks[i].offset + d->chunks[i].size;
seek(d->chunks[i].offset);
audioDataSizeinBytes = d->chunks[i].size;
while (tell() + 12 <= dstChunkEnd) {
ByteVector dstChunkName = readBlock(4);
long long dstChunkSize = bigEndian ? readBlock(8).toInt64BE(0) : readBlock(8).toInt64LE(0);
if (!isValidChunkID(dstChunkName)) {
debug("DSDIFF::File::read() -- DST Chunk '" + dstChunkName + "' has invalid ID");
setValid(false);
break;
}
if (static_cast<long long>(tell()) + dstChunkSize > dstChunkEnd) {
debug("DSDIFF::File::read() -- DST Chunk '" + dstChunkName + "' has invalid size (larger than the DST chunk)");
setValid(false);
break;
}
if (dstChunkName == "FRTE") {
// Found the DST frame information chunk
dstNumFrames = bigEndian ? readBlock(4).toUInt32BE(0) : readBlock(4).toUInt32LE(0);
dstFrameRate = bigEndian ? readBlock(2).toUInt16BE(0) : readBlock(2).toUInt16LE(0);
// Found the wanted one, no need to look at the others
break;
}
seek(dstChunkSize, Current);
// Check padding
long uPosNotPadded = tell();
if ((uPosNotPadded & 0x01) != 0) {
ByteVector iByte = readBlock(1);
if ((iByte.size() != 1) || (iByte[0] != 0))
// Not well formed, re-seek
seek(uPosNotPadded, Beginning);
}
}
}
else if (d->chunks[i].name == "PROP") {
d->childChunkIndex[PROPChunk] = i;
// Now decodes the chunks inside the PROP chunk
long long propChunkEnd = d->chunks[i].offset + d->chunks[i].size;
// +4 to remove the 'SND ' marker at beginning of 'PROP' chunk
seek(d->chunks[i].offset + 4);
while (tell() + 12 <= propChunkEnd) {
ByteVector propChunkName = readBlock(4);
long long propChunkSize = bigEndian ? readBlock(8).toInt64BE(0) : readBlock(8).toInt64LE(0);
if (!isValidChunkID(propChunkName)) {
debug("DSDIFF::File::read() -- PROP Chunk '" + propChunkName + "' has invalid ID");
setValid(false);
break;
}
if (static_cast<long long>(tell()) + propChunkSize > propChunkEnd) {
debug("DSDIFF::File::read() -- PROP Chunk '" + propChunkName + "' has invalid size (larger than the PROP chunk)");
setValid(false);
break;
}
Chunk64 chunk;
chunk.name = propChunkName;
chunk.size = propChunkSize;
chunk.offset = tell();
seek(chunk.size, Current);
// Check padding
chunk.padding = 0;
long uPosNotPadded = tell();
if ((uPosNotPadded & 0x01) != 0) {
ByteVector iByte = readBlock(1);
if ((iByte.size() != 1) || (iByte[0] != 0))
// Not well formed, re-seek
seek(uPosNotPadded, Beginning);
else
chunk.padding = 1;
}
d->childChunks[PROPChunk].push_back(chunk);
}
}
else if (d->chunks[i].name == "DIIN") {
d->childChunkIndex[DIINChunk] = i;
d->hasDiin = true;
// Now decode the chunks inside the DIIN chunk
long long diinChunkEnd = d->chunks[i].offset + d->chunks[i].size;
seek(d->chunks[i].offset);
while (tell() + 12 <= diinChunkEnd) {
ByteVector diinChunkName = readBlock(4);
long long diinChunkSize = bigEndian ? readBlock(8).toInt64BE(0) : readBlock(8).toInt64LE(0);
if (!isValidChunkID(diinChunkName)) {
debug("DSDIFF::File::read() -- DIIN Chunk '" + diinChunkName + "' has invalid ID");
setValid(false);
break;
}
if (static_cast<long long>(tell()) + diinChunkSize > diinChunkEnd) {
debug("DSDIFF::File::read() -- DIIN Chunk '" + diinChunkName + "' has invalid size (larger than the DIIN chunk)");
setValid(false);
break;
}
Chunk64 chunk;
chunk.name = diinChunkName;
chunk.size = diinChunkSize;
chunk.offset = tell();
seek(chunk.size, Current);
// Check padding
chunk.padding = 0;
long uPosNotPadded = tell();
if ((uPosNotPadded & 0x01) != 0) {
ByteVector iByte = readBlock(1);
if ((iByte.size() != 1) || (iByte[0] != 0))
// Not well formed, re-seek
seek(uPosNotPadded, Beginning);
else
chunk.padding = 1;
}
d->childChunks[DIINChunk].push_back(chunk);
}
}
else if (d->chunks[i].name == "ID3 " || d->chunks[i].name == "id3 ") {
d->id3v2TagChunkID = d->chunks[i].name;
d->tag.set(ID3v2Index, new ID3v2::Tag(this, d->chunks[i].offset));
d->isID3InPropChunk = false;
d->hasID3v2 = true;
}
}
if (!isValid())
return;
if (d->childChunkIndex[PROPChunk] < 0) {
debug("DSDIFF::File::read() -- no PROP chunk found");
setValid(false);
return;
}
// Read properties
unsigned int sampleRate = 0;
unsigned short channels = 0;
for (unsigned int i = 0; i < d->childChunks[PROPChunk].size(); i++) {
if (d->childChunks[PROPChunk][i].name == "ID3 " || d->childChunks[PROPChunk][i].name == "id3 ") {
if (d->hasID3v2) {
d->duplicateID3V2chunkIndex = i;
// ID3V2 tag has already been found at root level
continue;
}
d->id3v2TagChunkID = d->childChunks[PROPChunk][i].name;
d->tag.set(ID3v2Index, new ID3v2::Tag(this, d->childChunks[PROPChunk][i].offset));
d->isID3InPropChunk = true;
d->hasID3v2 = true;
}
else if (d->childChunks[PROPChunk][i].name == "FS ") {
// Sample rate
seek(d->childChunks[PROPChunk][i].offset);
sampleRate = bigEndian ? readBlock(4).toUInt32BE(0) : readBlock(4).toUInt32LE(0);
}
else if (d->childChunks[PROPChunk][i].name == "CHNL") {
// Channels
seek(d->childChunks[PROPChunk][i].offset);
channels = bigEndian ? readBlock(2).toInt16BE(0) : readBlock(2).toInt16LE(0);
}
}
// Read title & artist from DIIN chunk
d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, true);
if (d->hasDiin) {
for (unsigned int i = 0; i < d->childChunks[DIINChunk].size(); i++) {
if (d->childChunks[DIINChunk][i].name == "DITI") {
seek(d->childChunks[DIINChunk][i].offset);
unsigned int titleStrLength = bigEndian ? readBlock(4).toUInt32BE(0) : readBlock(4).toUInt32LE(0);
if (titleStrLength <= d->childChunks[DIINChunk][i].size) {
ByteVector titleStr = readBlock(titleStrLength);
d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, false)->setTitle(titleStr);
}
}
else if (d->childChunks[DIINChunk][i].name == "DIAR") {
seek(d->childChunks[DIINChunk][i].offset);
unsigned int artistStrLength = bigEndian ? readBlock(4).toUInt32BE(0) : readBlock(4).toUInt32LE(0);
if (artistStrLength <= d->childChunks[DIINChunk][i].size) {
ByteVector artistStr = readBlock(artistStrLength);
d->tag.access<DSDIFF::DIIN::Tag>(DIINIndex, false)->setArtist(artistStr);
}
}
}
}
if (readProperties) {
if (lengthDSDSamplesTimeChannels == 0) {
// DST compressed signal : need to compute length of DSD uncompressed frames
if (dstFrameRate > 0)
lengthDSDSamplesTimeChannels = static_cast<unsigned long long>(dstNumFrames) * static_cast<unsigned long long>(sampleRate) / static_cast<unsigned long long>(dstFrameRate);
else
lengthDSDSamplesTimeChannels = 0;
}
else {
// In DSD uncompressed files, the read number of samples is the total for each channel
if (channels > 0)
lengthDSDSamplesTimeChannels /= channels;
}
int bitrate = 0;
if (lengthDSDSamplesTimeChannels > 0)
bitrate = (audioDataSizeinBytes * 8 * sampleRate) / lengthDSDSamplesTimeChannels / 1000;
d->properties.reset(new AudioProperties(sampleRate, channels, lengthDSDSamplesTimeChannels, bitrate, propertiesStyle));
}
if (!ID3v2Tag()) {
d->tag.access<ID3v2::Tag>(ID3v2Index, true);
// By default, ID3 chunk is at root level
d->isID3InPropChunk = false;
d->hasID3v2 = false;
}
}
void DSDIFF::File::writeChunk(const ByteVector &name, const ByteVector &data, unsigned long long offset, unsigned long replace, unsigned int leadingPadding) {
ByteVector combined;
if (leadingPadding)
combined.append(ByteVector(leadingPadding, '\x00'));
combined.append(name);
if (d->endianness == BigEndian)
combined.append(ByteVector::fromUInt64BE(data.size()));
else
combined.append(ByteVector::fromUInt64LE(data.size()));
combined.append(data);
if ((data.size() & 0x01) != 0)
combined.append('\x00');
insert(combined, offset, replace);
}
Reference in New Issue View Git Blame Copy Permalink