ByteVector ID3v2::Tag::render(int version) const
{
// We need to render the "tag data" first so that we have to correct size to
// render in the tag's header. The "tag data" -- everything that is included
// in ID3v2::Header::tagSize() -- includes the extended header, frames and
// padding, but does not include the tag's header or footer.
if(version != 3 && version != 4) {
debug("Unknown ID3v2 version, using ID3v2.4");
version = 4;
}
// TODO: Render the extended header.
// Downgrade the frames that ID3v2.3 doesn't support.
FrameList newFrames;
newFrames.setAutoDelete(true);
FrameList frameList;
if(version == 4) {
frameList = d->frameList;
}
else {
downgradeFrames(&frameList, &newFrames);
}
// Reserve a 10-byte blank space for an ID3v2 tag header.
ByteVector tagData(Header::size(), '\0');
// Loop through the frames rendering them and adding them to the tagData.
for(FrameList::ConstIterator it = frameList.begin(); it != frameList.end(); it++) {
(*it)->header()->setVersion(version);
if((*it)->header()->frameID().size() != 4) {
debug("An ID3v2 frame of unsupported or unknown type \'"
+ String((*it)->header()->frameID()) + "\' has been discarded");
continue;
}
if(!(*it)->header()->tagAlterPreservation()) {
const ByteVector frameData = (*it)->render();
if(frameData.size() == Frame::headerSize((*it)->header()->version())) {
debug("An empty ID3v2 frame \'"
+ String((*it)->header()->frameID()) + "\' has been discarded");
continue;
}
tagData.append(frameData);
}
}
// Compute the amount of padding, and append that to tagData.
// TODO: Should be calculated in long long in taglib2.
long originalSize = d->header.tagSize();
long paddingSize = originalSize - (tagData.size() - Header::size());
if(paddingSize <= 0) {
paddingSize = MinPaddingSize;
}
else {
// Padding won't increase beyond 1% of the file size or 1MB.
long threshold = d->file ? d->file->length() / 100 : 0;
threshold = std::max(threshold, MinPaddingSize);
threshold = std::min(threshold, MaxPaddingSize);
if(paddingSize > threshold)
paddingSize = MinPaddingSize;
}
tagData.resize(static_cast<unsigned int>(tagData.size() + paddingSize), '\0');
// Set the version and data size.
d->header.setMajorVersion(version);
d->header.setTagSize(tagData.size() - Header::size());
// TODO: This should eventually include d->footer->render().
const ByteVector headerData = d->header.render();
std::copy(headerData.begin(), headerData.end(), tagData.begin());
return tagData;
}
Frame *FrameFactory::createFrame(const ByteVector &data, uint version) const
{
Frame::Header *header = new Frame::Header(data, version);
ByteVector frameID = header->frameID();
// A quick sanity check -- make sure that the frameID is 4 uppercase Latin1
// characters. Also make sure that there is data in the frame.
if(!frameID.size() == (version < 3 ? 3 : 4) ||
header->frameSize() <= 0 ||
header->frameSize() > data.size())
{
delete header;
return 0;
}
for(ByteVector::ConstIterator it = frameID.begin(); it != frameID.end(); it++) {
if( (*it < 'A' || *it > 'Z') && (*it < '1' || *it > '9') ) {
delete header;
return 0;
}
}
// TagLib doesn't mess with encrypted frames, so just treat them
// as unknown frames.
#if HAVE_ZLIB == 0
if(header->compression()) {
debug("Compressed frames are currently not supported.");
return new UnknownFrame(data, header);
}
#endif
if(header->encryption()) {
debug("Encrypted frames are currently not supported.");
return new UnknownFrame(data, header);
}
if(!updateFrame(header)) {
header->setTagAlterPreservation(true);
return new UnknownFrame(data, header);
}
// updateFrame() might have updated the frame ID.
frameID = header->frameID();
// This is where things get necissarily nasty. Here we determine which
// Frame subclass (or if none is found simply an Frame) based
// on the frame ID. Since there are a lot of possibilities, that means
// a lot of if blocks.
// Text Identification (frames 4.2)
if(frameID.startsWith("T")) {
TextIdentificationFrame *f = frameID != "TXXX"
? new TextIdentificationFrame(data, header)
: new UserTextIdentificationFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
if(frameID == "TCON")
updateGenre(f);
return f;
}
// Comments (frames 4.10)
if(frameID == "COMM") {
CommentsFrame *f = new CommentsFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Attached Picture (frames 4.14)
if(frameID == "APIC") {
AttachedPictureFrame *f = new AttachedPictureFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Relative Volume Adjustment (frames 4.11)
if(frameID == "RVA2")
return new RelativeVolumeFrame(data, header);
// Unique File Identifier (frames 4.1)
if(frameID == "UFID")
return new UniqueFileIdentifierFrame(data, header);
// General Encapsulated Object (frames 4.15)
if(frameID == "GEOB")
return new GeneralEncapsulatedObjectFrame(data, header);
return new UnknownFrame(data, header);
}
Frame *FrameFactory::createFrame(const ByteVector &origData, Header *tagHeader) const
{
ByteVector data = origData;
uint version = tagHeader->majorVersion();
Frame::Header *header = new Frame::Header(data, version);
ByteVector frameID = header->frameID();
// A quick sanity check -- make sure that the frameID is 4 uppercase Latin1
// characters. Also make sure that there is data in the frame.
if(!frameID.size() == (version < 3 ? 3 : 4) ||
header->frameSize() <= uint(header->dataLengthIndicator() ? 4 : 0) ||
header->frameSize() > data.size())
{
delete header;
return 0;
}
for(ByteVector::ConstIterator it = frameID.begin(); it != frameID.end(); it++) {
if( (*it < 'A' || *it > 'Z') && (*it < '1' || *it > '9') ) {
delete header;
return 0;
}
}
if(version > 3 && (tagHeader->unsynchronisation() || header->unsynchronisation())) {
// Data lengths are not part of the encoded data, but since they are synch-safe
// integers they will be never actually encoded.
ByteVector frameData = data.mid(Frame::Header::size(version), header->frameSize());
frameData = SynchData::decode(frameData);
data = data.mid(0, Frame::Header::size(version)) + frameData;
}
// TagLib doesn't mess with encrypted frames, so just treat them
// as unknown frames.
#if HAVE_ZLIB == 0
if(header->compression()) {
debug("Compressed frames are currently not supported.");
return new UnknownFrame(data, header);
}
#endif
if(header->encryption()) {
debug("Encrypted frames are currently not supported.");
return new UnknownFrame(data, header);
}
if(!updateFrame(header)) {
header->setTagAlterPreservation(true);
return new UnknownFrame(data, header);
}
// updateFrame() might have updated the frame ID.
frameID = header->frameID();
// This is where things get necissarily nasty. Here we determine which
// Frame subclass (or if none is found simply an Frame) based
// on the frame ID. Since there are a lot of possibilities, that means
// a lot of if blocks.
// Text Identification (frames 4.2)
if(frameID.startsWith("T")) {
TextIdentificationFrame *f = frameID != "TXXX"
? new TextIdentificationFrame(data, header)
: new UserTextIdentificationFrame(data, header);
d->setTextEncoding(f);
if(frameID == "TCON")
updateGenre(f);
return f;
}
// Comments (frames 4.10)
if(frameID == "COMM") {
CommentsFrame *f = new CommentsFrame(data, header);
d->setTextEncoding(f);
return f;
}
// Attached Picture (frames 4.14)
if(frameID == "APIC") {
AttachedPictureFrame *f = new AttachedPictureFrame(data, header);
d->setTextEncoding(f);
return f;
}
// ID3v2.2 Attached Picture
if(frameID == "PIC") {
AttachedPictureFrame *f = new AttachedPictureFrameV22(data, header);
d->setTextEncoding(f);
return f;
}
// Relative Volume Adjustment (frames 4.11)
if(frameID == "RVA2")
return new RelativeVolumeFrame(data, header);
// Unique File Identifier (frames 4.1)
if(frameID == "UFID")
return new UniqueFileIdentifierFrame(data, header);
// General Encapsulated Object (frames 4.15)
if(frameID == "GEOB") {
GeneralEncapsulatedObjectFrame *f = new GeneralEncapsulatedObjectFrame(data, header);
d->setTextEncoding(f);
return f;
}
// URL link (frames 4.3)
if(frameID.startsWith("W")) {
if(frameID != "WXXX") {
return new UrlLinkFrame(data, header);
}
else {
UserUrlLinkFrame *f = new UserUrlLinkFrame(data, header);
d->setTextEncoding(f);
return f;
}
}
// Unsynchronized lyric/text transcription (frames 4.8)
if(frameID == "USLT") {
UnsynchronizedLyricsFrame *f = new UnsynchronizedLyricsFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Popularimeter (frames 4.17)
if(frameID == "POPM")
return new PopularimeterFrame(data, header);
// Private (frames 4.27)
if(frameID == "PRIV")
return new PrivateFrame(data, header);
return new UnknownFrame(data, header);
}
Frame *FrameFactory::createFrame(const ByteVector &origData, const Header *tagHeader) const
{
ByteVector data = origData;
unsigned int version = tagHeader->majorVersion();
Frame::Header *header = new Frame::Header(data, version);
ByteVector frameID = header->frameID();
// A quick sanity check -- make sure that the frameID is 4 uppercase Latin1
// characters. Also make sure that there is data in the frame.
if(frameID.size() != (version < 3 ? 3 : 4) ||
header->frameSize() <= static_cast<unsigned int>(header->dataLengthIndicator() ? 4 : 0) ||
header->frameSize() > data.size())
{
delete header;
return 0;
}
#ifndef NO_ITUNES_HACKS
if(version == 3 && frameID.size() == 4 && frameID[3] == '\0') {
// iTunes v2.3 tags store v2.2 frames - convert now
frameID = frameID.mid(0, 3);
header->setFrameID(frameID);
header->setVersion(2);
updateFrame(header);
header->setVersion(3);
}
#endif
for(ByteVector::ConstIterator it = frameID.begin(); it != frameID.end(); it++) {
if( (*it < 'A' || *it > 'Z') && (*it < '0' || *it > '9') ) {
delete header;
return 0;
}
}
if(version > 3 && (tagHeader->unsynchronisation() || header->unsynchronisation())) {
// Data lengths are not part of the encoded data, but since they are synch-safe
// integers they will be never actually encoded.
ByteVector frameData = data.mid(Frame::Header::size(version), header->frameSize());
frameData = SynchData::decode(frameData);
data = data.mid(0, Frame::Header::size(version)) + frameData;
}
// TagLib doesn't mess with encrypted frames, so just treat them
// as unknown frames.
#if !defined(HAVE_ZLIB) || HAVE_ZLIB == 0
if(header->compression()) {
debug("Compressed frames are currently not supported.");
return new UnknownFrame(data, header);
}
#endif
if(header->encryption()) {
debug("Encrypted frames are currently not supported.");
return new UnknownFrame(data, header);
}
if(!updateFrame(header)) {
header->setTagAlterPreservation(true);
return new UnknownFrame(data, header);
}
// updateFrame() might have updated the frame ID.
frameID = header->frameID();
// This is where things get necissarily nasty. Here we determine which
// Frame subclass (or if none is found simply an Frame) based
// on the frame ID. Since there are a lot of possibilities, that means
// a lot of if blocks.
// Text Identification (frames 4.2)
// Apple proprietary WFED (Podcast URL) is in fact a text frame.
if(frameID.startsWith("T") || frameID == "WFED") {
TextIdentificationFrame *f = frameID != "TXXX"
? new TextIdentificationFrame(data, header)
: new UserTextIdentificationFrame(data, header);
d->setTextEncoding(f);
if(frameID == "TCON")
updateGenre(f);
return f;
}
// Comments (frames 4.10)
if(frameID == "COMM") {
CommentsFrame *f = new CommentsFrame(data, header);
d->setTextEncoding(f);
return f;
}
// Attached Picture (frames 4.14)
if(frameID == "APIC") {
AttachedPictureFrame *f = new AttachedPictureFrame(data, header);
d->setTextEncoding(f);
return f;
}
// ID3v2.2 Attached Picture
if(frameID == "PIC") {
AttachedPictureFrame *f = new AttachedPictureFrameV22(data, header);
d->setTextEncoding(f);
return f;
}
// Relative Volume Adjustment (frames 4.11)
if(frameID == "RVA2")
return new RelativeVolumeFrame(data, header);
// Unique File Identifier (frames 4.1)
if(frameID == "UFID")
return new UniqueFileIdentifierFrame(data, header);
// General Encapsulated Object (frames 4.15)
if(frameID == "GEOB") {
GeneralEncapsulatedObjectFrame *f = new GeneralEncapsulatedObjectFrame(data, header);
d->setTextEncoding(f);
return f;
}
// URL link (frames 4.3)
if(frameID.startsWith("W")) {
if(frameID != "WXXX") {
return new UrlLinkFrame(data, header);
}
else {
UserUrlLinkFrame *f = new UserUrlLinkFrame(data, header);
d->setTextEncoding(f);
return f;
}
}
// Unsynchronized lyric/text transcription (frames 4.8)
if(frameID == "USLT") {
UnsynchronizedLyricsFrame *f = new UnsynchronizedLyricsFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Synchronised lyrics/text (frames 4.9)
if(frameID == "SYLT") {
SynchronizedLyricsFrame *f = new SynchronizedLyricsFrame(data, header);
if(d->useDefaultEncoding)
f->setTextEncoding(d->defaultEncoding);
return f;
}
// Event timing codes (frames 4.5)
if(frameID == "ETCO")
return new EventTimingCodesFrame(data, header);
// Popularimeter (frames 4.17)
if(frameID == "POPM")
return new PopularimeterFrame(data, header);
// Private (frames 4.27)
if(frameID == "PRIV")
return new PrivateFrame(data, header);
// Ownership (frames 4.22)
if(frameID == "OWNE") {
OwnershipFrame *f = new OwnershipFrame(data, header);
d->setTextEncoding(f);
return f;
}
// Chapter (ID3v2 chapters 1.0)
if(frameID == "CHAP")
return new ChapterFrame(tagHeader, data, header);
// Table of contents (ID3v2 chapters 1.0)
if(frameID == "CTOC")
return new TableOfContentsFrame(tagHeader, data, header);
// Apple proprietary PCST (Podcast)
if(frameID == "PCST")
return new PodcastFrame(data, header);
return new UnknownFrame(data, header);
}
bool CHttpServer::receive_request(ByteVector &request)
{
if (verbose) RAWTRACE("Receiving request...");
ByteVector r;
char buf[BUF_SIZE];
for(;;) {
if (verbose) RAWTRACE("Read portion of data from socket...");
int n = recv(m_sock, &buf[0], sizeof(buf), 0);
if (n == -1) {
int e = RHO_NET_ERROR_CODE;
#if !defined(WINDOWS_PLATFORM)
if (e == EINTR)
continue;
#else
if (e == WSAEINTR)
continue;
#endif
#if defined(OS_WP8)
if (e == EAGAIN || e == WSAEWOULDBLOCK) {
#else
if (e == EAGAIN) {
#endif
if (!r.empty())
break;
fd_set fds;
FD_ZERO(&fds);
FD_SET(m_sock, &fds);
select(m_sock + 1, &fds, 0, 0, 0);
continue;
}
RAWLOG_ERROR1("Error when receiving data from socket: %d", e);
return false;
}
if (n == 0) {
RAWLOG_ERROR("Connection gracefully closed before we send any data");
return false;
}
if (verbose) RAWTRACE1("Actually read %d bytes", n);
r.insert(r.end(), &buf[0], &buf[0] + n);
}
if (!r.empty()) {
request.insert(request.end(), r.begin(), r.end());
if ( !rho_conf_getBool("log_skip_post") )
RAWTRACE1("Received request:\n%s", &request[0]);
}
return true;
}
bool CHttpServer::send_response_impl(String const &data, bool continuation)
{
if (verbose) {
if (continuation)
RAWTRACE("Send continuation data...");
else
RAWTRACE("Sending response...");
}
// First of all, make socket blocking
#if defined(WINDOWS_PLATFORM)
unsigned long optval = 0;
if(::ioctlsocket(m_sock, FIONBIO, &optval) == SOCKET_ERROR) {
RAWLOG_ERROR1("Can not set blocking socket mode: %d", RHO_NET_ERROR_CODE);
return false;
}
#else
int flags = fcntl(m_sock, F_GETFL);
if (flags == -1) {
RAWLOG_ERROR1("Can not get current socket mode: %d", errno);
return false;
}
if (fcntl(m_sock, F_SETFL, flags & ~O_NONBLOCK) == -1) {
RAWLOG_ERROR1("Can not set blocking socket mode: %d", errno);
return false;
}
#endif
size_t pos = 0;
for(; pos < data.size();) {
int n = send(m_sock, data.c_str() + pos, data.size() - pos, 0);
if (n == -1) {
int e = RHO_NET_ERROR_CODE;
#if !defined(WINDOWS_PLATFORM)
if (e == EINTR)
continue;
#endif
RAWLOG_ERROR1("Can not send response data: %d", e);
return false;
}
if (n == 0)
break;
pos += n;
}
//String dbg_response = response.size() > 100 ? response.substr(0, 100) : response;
//RAWTRACE2("Sent response:\n%s%s", dbg_response.c_str(), response.size() > 100 ? "..." : " ");
if (continuation)
RAWTRACE1("Sent response body: %d bytes", data.size());
else if ( !rho_conf_getBool("log_skip_post") )
RAWTRACE1("Sent response (only headers displayed):\n%s", data.c_str());
return true;
}
bool CHttpServer::send_response(String const &response, bool redirect)
{
#ifdef OS_ANDROID
if (redirect) {
CAutoPtr<IRhoThreadImpl> ptrThread = rho_get_RhoClassFactory()->createThreadImpl();
ptrThread->sleep(20);
}
#endif
return send_response_impl(response, false);
}
String CHttpServer::create_response(String const &reason)
{
return create_response(reason, "");
}
String CHttpServer::create_response(String const &reason, HeaderList const &headers)
{
return create_response(reason, headers, "");
}
String CHttpServer::create_response(String const &reason, String const &body)
{
return create_response(reason, HeaderList(), body);
}
String CHttpServer::create_response(String const &reason, HeaderList const &hdrs, String const &body)
{
String response = "HTTP/1.1 ";
response += reason;
response += "\r\n";
char buf[50];
snprintf(buf, sizeof(buf), "%d", m_port);
HeaderList headers;
headers.push_back(Header("Host", String("127.0.0.1:") + buf));
headers.push_back(Header("Connection", "close"));
std::copy(hdrs.begin(), hdrs.end(), std::back_inserter(headers));
for(HeaderList::const_iterator it = headers.begin(), lim = headers.end();
it != lim; ++it) {
response += it->name;
response += ": ";
response += it->value;
response += "\r\n";
}
response += "\r\n";
response += body;
return response;
}
int CryptoManager::verify_callback(int preverify_ok, X509_STORE_CTX *ctx) {
int err = X509_STORE_CTX_get_error(ctx);
SSL* ssl = (SSL*)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
SSLVerifyData* verifyData = (SSLVerifyData*)SSL_get_ex_data(ssl, CryptoManager::idxVerifyData);
// TODO: we should make sure that the trusted certificate store never overules KeyPrint, if present, because certificate pinning on an individual certificate is a stronger method of verification.
// verifyData is unset only when KeyPrint has been pinned and we are not skipping errors due to incomplete chains
// we can fail here f.ex. if the certificate has expired but is still pinned with KeyPrint
if (!verifyData)
return preverify_ok;
bool allowUntrusted = verifyData->first;
string keyp = verifyData->second;
if (!keyp.empty()) {
X509* cert = X509_STORE_CTX_get_current_cert(ctx);
if (!cert)
return 0;
string kp2(keyp);
if (kp2.compare(0, 12, "trusted_keyp") == 0) {
// Possible follow up errors, after verification of a partial chain
if (err == X509_V_ERR_CERT_UNTRUSTED || err == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE) {
X509_STORE_CTX_set_error(ctx, X509_V_OK);
return 1;
}
} else if (kp2.compare(0, 7, "SHA256/") != 0)
return allowUntrusted ? 1 : 0;
ByteVector kp = ssl::X509_digest(cert, EVP_sha256());
ByteVector kp2v(kp.size());
Encoder::fromBase32(&kp2[7], &kp2v[0], kp2v.size());
if (std::equal(kp.begin(), kp.end(), kp2v.begin())) {
// KeyPrint validated, we can get rid of it (to avoid unnecessary passes)
SSL_set_ex_data(ssl, CryptoManager::idxVerifyData, NULL);
if (err != X509_V_OK) {
// This is the right way to get the certificate store, although it is rather roundabout
X509_STORE* store = SSL_CTX_get_cert_store(SSL_get_SSL_CTX(ssl));
dcassert(store == ctx->ctx);
// Hide the potential library error about trying to add a dupe
ERR_set_mark();
if (X509_STORE_add_cert(store, cert)) {
X509_STORE_CTX_set_error(ctx, X509_V_OK);
X509_verify_cert(ctx);
err = X509_STORE_CTX_get_error(ctx);
} else ERR_pop_to_mark();
// KeyPrint was not root certificate or we don't have the issuer certificate, the best we can do is trust the pinned KeyPrint
if (err == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN || err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY || err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) {
X509_STORE_CTX_set_error(ctx, X509_V_OK);
// Set this to allow ignoring any follow up errors caused by the incomplete chain
SSL_set_ex_data(ssl, CryptoManager::idxVerifyData, &CryptoManager::trustedKeyprint);
return 1;
}
}
return (err == X509_V_OK) ? 1 : 0;
} else {
if (X509_STORE_CTX_get_error_depth(ctx) > 0)
return 1;
}
}
if (allowUntrusted) {
/*
// We let untrusted certificates through unconditionally, when allowed, but we like to complain
if (!preverify_ok && err != X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) {
X509* cert = NULL;
if ((cert = X509_STORE_CTX_get_current_cert(ctx)) != NULL) {
X509_NAME* subject = X509_get_subject_name(cert);
string tmp, line;
tmp = getNameEntryByNID(subject, NID_commonName);
if (!tmp.empty()) {
CID certCID(tmp);
if (certCID)
tmp = Util::listToString(ClientManager::getInstance()->getNicks(certCID));
line += (!line.empty() ? ", " : "") + tmp;
}
tmp = getNameEntryByNID(subject, NID_organizationName);
if (!tmp.empty())
line += (!line.empty() ? ", " : "") + tmp;
ByteVector kp = ssl::X509_digest(cert, EVP_sha256());
string keyp = "SHA256/" + Encoder::toBase32(&kp[0], kp.size());
LogManager::getInstance()->message(STRING_F(VERIFY_CERT_FAILED, line % X509_verify_cert_error_string(err) % keyp), LogManager::LOG_INFO);
}
}*/
return 1;
}
return preverify_ok;
}
void SoftwareBreakpointManager::getOpcode(uint32_t type,
ByteVector &opcode) const {
#if defined(OS_WIN32) && defined(ARCH_ARM)
if (type == 4) {
static const uint32_t WinARMBPType = 2;
DS2LOG(Warning,
"requesting a breakpoint of size %u on Windows ARM, "
"adjusting to type %u",
type, WinARMBPType);
type = WinARMBPType;
}
#endif
opcode.clear();
// TODO: We shouldn't have preprocessor checks for ARCH_ARM vs ARCH_ARM64
// because we might be an ARM64 binary debugging an ARM inferior.
switch (type) {
#if defined(ARCH_ARM)
case 2: // udf #1
opcode.push_back('\xde');
#if defined(OS_POSIX)
opcode.push_back('\x01');
#elif defined(OS_WIN32)
opcode.push_back('\xfe');
#endif
break;
case 3: // udf.w #0
opcode.push_back('\xa0');
opcode.push_back('\x00');
opcode.push_back('\xf7');
opcode.push_back('\xf0');
break;
case 4: // udf #16
opcode.push_back('\xe7');
opcode.push_back('\xf0');
opcode.push_back('\x01');
opcode.push_back('\xf0');
break;
#elif defined(ARCH_ARM64)
case 4:
opcode.push_back('\xd4');
opcode.push_back('\x20');
opcode.push_back('\x20');
opcode.push_back('\x00');
break;
#endif
default:
DS2LOG(Error, "invalid breakpoint type %d", type);
DS2BUG("invalid breakpoint type");
break;
}
#if !(defined(ENDIAN_BIG) || defined(ENDIAN_LITTLE))
#error "Target not supported."
#endif
#if defined(ENDIAN_LITTLE)
std::reverse(opcode.begin(), opcode.end());
#endif
}
Byte calculateImageBrightnessFactor(const std::string& inImageFilePath)
{
BrightnessState state;
InputFile inputFile;
ByteVector brightnessValues;
DistanceAndBrightnessVector valuesForAverage;
inputFile.OpenFile(inImageFilePath);
state.mStream = inputFile.GetInputStream();
InitializeDecodingState(state);
StartRead(state);
LongBufferSizeType samplesSkipping = 1; // max samples 20
if(state.mJPGState.output_width > 500)
samplesSkipping = state.mJPGState.output_width / 50; // max samples - 50
else if(state.mJPGState.output_width > 20)
samplesSkipping = 10; // max samples - 50
LongBufferSizeType rowsSkipping = 1; // max samples 20
if(state.mJPGState.output_height > 500)
rowsSkipping = state.mJPGState.output_height / 50; // max samples - 50
else if(state.mJPGState.output_height > 20)
rowsSkipping = 10; // max samples - 50
LongBufferSizeType rowCounter = 0;
// read samples from image, converting to hsb and keeping the "b" component, as a brightness factor
while(state.mJPGState.output_scanline < state.mJPGState.output_height)
{
try
{
state.mTotalSampleRows = jpeg_read_scanlines(&(state.mJPGState), state.mSamplesBuffer, state.mJPGState.rec_outbuf_height);
++rowCounter;
if(rowCounter >= rowsSkipping)
rowCounter = 0;
else if(rowCounter != 1)
continue;
}
catch(HummusJPGException)
{
state.mTotalSampleRows = 0;
}
state.mIndexInRow = 0;
state.mCurrentSampleRow = 0;
while(state.mCurrentSampleRow < state.mTotalSampleRows)
{
LongBufferSizeType row_stride = state.mJPGState.output_width * state.mJPGState.output_components;
// convert samples to HSB (note that some samples are skipped)
for(LongBufferSizeType i=0;i<row_stride;i+=(state.mJPGState.output_components*samplesSkipping))
{
// get rgb
Byte r = state.mSamplesBuffer[state.mCurrentSampleRow][i];
Byte g = state.mSamplesBuffer[state.mCurrentSampleRow][i+1];
Byte b = state.mSamplesBuffer[state.mCurrentSampleRow][i+2];
// calculate brightness [converting to HSB]
brightnessValues.push_back(RGBtoHSVtoBrightness(r,g,b));
}
++state.mCurrentSampleRow;
}
}
FinalizeDecoding(state);
// prepare distance data and sort, to remove extremes from calculation
ByteVector::const_iterator it = brightnessValues.begin();
for(;it!=brightnessValues.end();++it)
valuesForAverage.push_back(DistanceAndBrightness(*it,calculateDistance(*it,brightnessValues)));
std::sort(valuesForAverage.begin(),valuesForAverage.end(),DistanceAndBrightnessSort);
// now simply calculate the average based on the first 2/3 of the vector, to reduce the effects of extremes
double average = 0;
DistanceAndBrightnessVector::const_iterator itCurrent = valuesForAverage.begin();
unsigned long interestingItemsCount = floor(valuesForAverage.size()*2.0/3.0);
DistanceAndBrightnessVector::const_iterator itEnd = valuesForAverage.begin()+interestingItemsCount;
for(itCurrent = valuesForAverage.begin();itCurrent!=itEnd;++itCurrent)
average+=(double)(itCurrent->brightness)/interestingItemsCount;
return ceil(average);
}
