/// acquires instance for RME interface / singleton class
/// has reference count support
RME* RME::getInstance() {
if (RMEimpl::mpMutexAsync == NULL) {
omxilosalservices::OmxILOsalMutex::MutexCreate(RMEimpl::mpMutexAsync);
if (RMEimpl::mpMutexAsync == NULL) {
RLOG_ERROR("OmxILOsalMutex::MutexCreate failed for RMEimpl\n");
return NULL;
}
}
RMEimpl::mpMutexAsync->MutexLock();
if (RMEimpl::mInstance == NULL) {
#if defined(SW_VARIANT_ANDROID)
GET_PROPERTY(TRACE_ENABLED_PROPERTY_NAME, value, "0");
Debug::mTraceEnabled = atoi(value);
#endif
RLOG_DEBUG("new RMEimpl instance\n");
RMEimpl::mInstance = new RMEimpl(); // mRefCount set to 1
if (RMEimpl::mInstance) {
// init: will create NMF domains
int status = RMEimpl::mInstance->Init();
if (status < 0) {
// refusing to keep going..
// possible causes: platform domains table badly formed or
// NMF CM domains failure
RLOG_ERROR("RMEimpl init\n");
delete RMEimpl::mInstance;
RMEimpl::mInstance = NULL;
}
} else {
RLOG_ERROR("RMEimpl instance\n");
}
} else {
RMEimpl::mInstance->mRefCount++;
RLOG_DEBUG("RME-refcount++ %d\n", RMEimpl::mInstance->mRefCount);
}
RMEimpl::mpMutexAsync->MutexUnlock();
return RMEimpl::mInstance;
}
void CipherFileIO::initHeader() {
// check if the file has a header, and read it if it does.. Otherwise,
// create one.
off_t rawSize = base->getSize();
if (rawSize >= HEADER_SIZE) {
rDebug("reading existing header, rawSize = %" PRIi64, rawSize);
// has a header.. read it
unsigned char buf[8] = {0};
IORequest req;
req.offset = 0;
req.data = buf;
req.dataLen = 8;
base->read(req);
cipher->streamDecode(buf, sizeof(buf), externalIV, key);
fileIV = 0;
for (int i = 0; i < 8; ++i) fileIV = (fileIV << 8) | (uint64_t)buf[i];
rAssert(fileIV != 0); // 0 is never used..
} else {
rDebug("creating new file IV header");
unsigned char buf[8] = {0};
do {
if (!cipher->randomize(buf, 8, false))
throw RLOG_ERROR("Unable to generate a random file IV");
fileIV = 0;
for (int i = 0; i < 8; ++i) fileIV = (fileIV << 8) | (uint64_t)buf[i];
if (fileIV == 0)
rWarning("Unexpected result: randomize returned 8 null bytes!");
} while (fileIV == 0); // don't accept 0 as an option..
if (base->isWritable()) {
cipher->streamEncode(buf, sizeof(buf), externalIV, key);
IORequest req;
req.offset = 0;
req.data = buf;
req.dataLen = 8;
base->write(req);
} else
rDebug("base not writable, IV not written..");
}
rDebug("initHeader finished, fileIV = %" PRIu64, fileIV);
}
