virtual float scoreFactory(const sp<IMediaPlayer>& /*client*/,
int fd,
int64_t offset,
int64_t length,
float /*curScore*/) {
if (legacyDrm()) {
sp<DataSource> source = new FileSource(dup(fd), offset, length);
String8 mimeType;
float confidence;
if (SniffWVM(source, &mimeType, &confidence, NULL /* format */)) {
return 1.0;
}
}
if (getDefaultPlayerType() == STAGEFRIGHT_PLAYER) {
char buf[20];
lseek(fd, offset, SEEK_SET);
read(fd, buf, sizeof(buf));
lseek(fd, offset, SEEK_SET);
uint32_t ident = *((uint32_t*)buf);
// Ogg vorbis?
if (ident == 0x5367674f) // 'OggS'
return 1.0;
}
return 0.0;
}
status_t NuMediaExtractor::setDataSource(
const char *path, const KeyedVector<String8, String8> *headers) {
Mutex::Autolock autoLock(mLock);
if (mImpl != NULL) {
return -EINVAL;
}
sp<DataSource> dataSource =
DataSource::CreateFromURI(path, headers);
if (dataSource == NULL) {
return -ENOENT;
}
mIsWidevineExtractor = false;
if (!strncasecmp("widevine://", path, 11)) {
String8 mimeType;
float confidence;
sp<AMessage> dummy;
bool success = SniffWVM(dataSource, &mimeType, &confidence, &dummy);
if (!success
|| strcasecmp(
mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
return ERROR_UNSUPPORTED;
}
sp<WVMExtractor> extractor = new WVMExtractor(dataSource);
extractor->setAdaptiveStreamingMode(true);
mImpl = extractor;
mIsWidevineExtractor = true;
} else {
mImpl = MediaExtractor::Create(dataSource);
}
if (mImpl == NULL) {
return ERROR_UNSUPPORTED;
}
sp<MetaData> fileMeta = mImpl->getMetaData();
const char *containerMime;
if (fileMeta != NULL
&& fileMeta->findCString(kKeyMIMEType, &containerMime)
&& !strcasecmp(containerMime, "video/wvm")) {
// We always want to use "cryptoPluginMode" when using the wvm
// extractor. We can tell that it is this extractor by looking
// at the container mime type.
// The cryptoPluginMode ensures that the extractor will actually
// give us data in a call to MediaSource::read(), unlike its
// default mode that we use from AwesomePlayer.
static_cast<WVMExtractor *>(mImpl.get())->setCryptoPluginMode(true);
} else if (mImpl->getDrmFlag()) {
// For all other drm content, we don't want to expose decrypted
// content to Java application.
mImpl.clear();
mImpl = NULL;
return ERROR_UNSUPPORTED;
}
mDataSource = dataSource;
updateDurationAndBitrate();
return OK;
}
