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author | Jeff Tinker <jtinker@google.com> | 2013-03-20 16:48:54 +0000 |
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committer | Android (Google) Code Review <android-gerrit@google.com> | 2013-03-20 16:48:55 +0000 |
commit | de5cdcae51d3afd9b14e818087be14288c0c6b8c (patch) | |
tree | 0f074d6208d3d3a15e961234de9405d21cdd8a5d /media/libmediaplayerservice/Drm.cpp | |
parent | 96954c00cc8887f216ba84e126ab4a1100f348b4 (diff) | |
parent | 441a78d5e224e0d67f9b52fa9adc795c6944159b (diff) | |
download | frameworks_av-de5cdcae51d3afd9b14e818087be14288c0c6b8c.zip frameworks_av-de5cdcae51d3afd9b14e818087be14288c0c6b8c.tar.gz frameworks_av-de5cdcae51d3afd9b14e818087be14288c0c6b8c.tar.bz2 |
Merge "Implementing MediaDrm APIs" into jb-mr2-dev
Diffstat (limited to 'media/libmediaplayerservice/Drm.cpp')
-rw-r--r-- | media/libmediaplayerservice/Drm.cpp | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/media/libmediaplayerservice/Drm.cpp b/media/libmediaplayerservice/Drm.cpp new file mode 100644 index 0000000..6ac7530 --- /dev/null +++ b/media/libmediaplayerservice/Drm.cpp @@ -0,0 +1,423 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +//#define LOG_NDEBUG 0 +#define LOG_TAG "Drm" +#include <utils/Log.h> + +#include <dirent.h> +#include <dlfcn.h> + +#include "Drm.h" + +#include <media/drm/DrmAPI.h> +#include <media/stagefright/foundation/ADebug.h> +#include <media/stagefright/foundation/AString.h> +#include <media/stagefright/foundation/hexdump.h> +#include <media/stagefright/MediaErrors.h> + +namespace android { + +KeyedVector<Vector<uint8_t>, String8> Drm::mUUIDToLibraryPathMap; +KeyedVector<String8, wp<SharedLibrary> > Drm::mLibraryPathToOpenLibraryMap; +Mutex Drm::mMapLock; + +static bool operator<(const Vector<uint8_t> &lhs, const Vector<uint8_t> &rhs) { + if (lhs.size() < rhs.size()) { + return true; + } else if (lhs.size() > rhs.size()) { + return false; + } + + return memcmp((void *)lhs.array(), (void *)rhs.array(), rhs.size()) < 0; +} + +Drm::Drm() + : mInitCheck(NO_INIT), + mFactory(NULL), + mPlugin(NULL) { +} + +Drm::~Drm() { + delete mPlugin; + mPlugin = NULL; + closeFactory(); +} + +void Drm::closeFactory() { + delete mFactory; + mFactory = NULL; + mLibrary.clear(); +} + +status_t Drm::initCheck() const { + return mInitCheck; +} + + +/* + * Search the plugins directory for a plugin that supports the scheme + * specified by uuid + * + * If found: + * mLibrary holds a strong pointer to the dlopen'd library + * mFactory is set to the library's factory method + * mInitCheck is set to OK + * + * If not found: + * mLibrary is cleared and mFactory are set to NULL + * mInitCheck is set to an error (!OK) + */ +void Drm::findFactoryForScheme(const uint8_t uuid[16]) { + + closeFactory(); + + // lock static maps + Mutex::Autolock autoLock(mMapLock); + + // first check cache + Vector<uint8_t> uuidVector; + uuidVector.appendArray(uuid, sizeof(uuid)); + ssize_t index = mUUIDToLibraryPathMap.indexOfKey(uuidVector); + if (index >= 0) { + if (loadLibraryForScheme(mUUIDToLibraryPathMap[index], uuid)) { + mInitCheck = OK; + return; + } else { + ALOGE("Failed to load from cached library path!"); + mInitCheck = ERROR_UNSUPPORTED; + return; + } + } + + // no luck, have to search + String8 dirPath("/vendor/lib/mediadrm"); + DIR* pDir = opendir(dirPath.string()); + + if (pDir == NULL) { + mInitCheck = ERROR_UNSUPPORTED; + ALOGE("Failed to open plugin directory %s", dirPath.string()); + return; + } + + + struct dirent* pEntry; + while ((pEntry = readdir(pDir))) { + + String8 pluginPath = dirPath + "/" + pEntry->d_name; + + if (pluginPath.getPathExtension() == ".so") { + + if (loadLibraryForScheme(pluginPath, uuid)) { + mUUIDToLibraryPathMap.add(uuidVector, pluginPath); + mInitCheck = OK; + closedir(pDir); + return; + } + } + } + + closedir(pDir); + + ALOGE("Failed to find drm plugin"); + mInitCheck = ERROR_UNSUPPORTED; +} + +bool Drm::loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]) { + + // get strong pointer to open shared library + ssize_t index = mLibraryPathToOpenLibraryMap.indexOfKey(path); + if (index >= 0) { + mLibrary = mLibraryPathToOpenLibraryMap[index].promote(); + } else { + index = mLibraryPathToOpenLibraryMap.add(path, NULL); + } + + if (!mLibrary.get()) { + mLibrary = new SharedLibrary(path); + if (!*mLibrary) { + return false; + } + + mLibraryPathToOpenLibraryMap.replaceValueAt(index, mLibrary); + } + + typedef DrmFactory *(*CreateDrmFactoryFunc)(); + + CreateDrmFactoryFunc createDrmFactory = + (CreateDrmFactoryFunc)mLibrary->lookup("createDrmFactory"); + + if (createDrmFactory == NULL || + (mFactory = createDrmFactory()) == NULL || + !mFactory->isCryptoSchemeSupported(uuid)) { + closeFactory(); + return false; + } + return true; +} + +bool Drm::isCryptoSchemeSupported(const uint8_t uuid[16]) { + Mutex::Autolock autoLock(mLock); + + if (mFactory && mFactory->isCryptoSchemeSupported(uuid)) { + return true; + } + + findFactoryForScheme(uuid); + return (mInitCheck == OK); +} + +status_t Drm::createPlugin(const uint8_t uuid[16]) { + Mutex::Autolock autoLock(mLock); + + if (mPlugin != NULL) { + return -EINVAL; + } + + if (!mFactory || !mFactory->isCryptoSchemeSupported(uuid)) { + findFactoryForScheme(uuid); + } + + if (mInitCheck != OK) { + return mInitCheck; + } + + return mFactory->createDrmPlugin(uuid, &mPlugin); +} + +status_t Drm::destroyPlugin() { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + delete mPlugin; + mPlugin = NULL; + + return OK; +} + +status_t Drm::openSession(Vector<uint8_t> &sessionId) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->openSession(sessionId); +} + +status_t Drm::closeSession(Vector<uint8_t> const &sessionId) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->closeSession(sessionId); +} + +status_t Drm::getLicenseRequest(Vector<uint8_t> const &sessionId, + Vector<uint8_t> const &initData, + String8 const &mimeType, DrmPlugin::LicenseType licenseType, + KeyedVector<String8, String8> const &optionalParameters, + Vector<uint8_t> &request, String8 &defaultUrl) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->getLicenseRequest(sessionId, initData, mimeType, licenseType, + optionalParameters, request, defaultUrl); +} + +status_t Drm::provideLicenseResponse(Vector<uint8_t> const &sessionId, + Vector<uint8_t> const &response) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->provideLicenseResponse(sessionId, response); +} + +status_t Drm::removeLicense(Vector<uint8_t> const &sessionId) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->removeLicense(sessionId); +} + +status_t Drm::queryLicenseStatus(Vector<uint8_t> const &sessionId, + KeyedVector<String8, String8> &infoMap) const { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->queryLicenseStatus(sessionId, infoMap); +} + +status_t Drm::getProvisionRequest(Vector<uint8_t> &request, String8 &defaultUrl) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->getProvisionRequest(request, defaultUrl); +} + +status_t Drm::provideProvisionResponse(Vector<uint8_t> const &response) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->provideProvisionResponse(response); +} + + +status_t Drm::getSecureStops(List<Vector<uint8_t> > &secureStops) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->getSecureStops(secureStops); +} + +status_t Drm::releaseSecureStops(Vector<uint8_t> const &ssRelease) { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->releaseSecureStops(ssRelease); +} + +status_t Drm::getPropertyString(String8 const &name, String8 &value ) const { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->getPropertyString(name, value); +} + +status_t Drm::getPropertyByteArray(String8 const &name, Vector<uint8_t> &value ) const { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->getPropertyByteArray(name, value); +} + +status_t Drm::setPropertyString(String8 const &name, String8 const &value ) const { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->setPropertyString(name, value); +} + +status_t Drm::setPropertyByteArray(String8 const &name, + Vector<uint8_t> const &value ) const { + Mutex::Autolock autoLock(mLock); + + if (mInitCheck != OK) { + return mInitCheck; + } + + if (mPlugin == NULL) { + return -EINVAL; + } + + return mPlugin->setPropertyByteArray(name, value); +} + +} // namespace android |