Initial import of Widevine Common Encryption DRM engine
Builds libwvmdrmengine.so, which is loaded by the new MediaDrm APIs to support playback of Widevine/CENC protected content. Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c
This commit is contained in:
Jeff Tinker
257
libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp
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257
libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp
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//
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// Copyright 2013 Google Inc. All Rights Reserved.
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//
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//#define LOG_NDEBUG 0
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#define LOG_TAG "WVCdm"
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#include <utils/Log.h>
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#include "WVDrmPlugin.h"
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#include <string>
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#include <vector>
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#include "utils/Errors.h"
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#include "wv_cdm_constants.h"
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namespace wvdrm {
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using namespace android;
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using namespace std;
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using namespace wvcdm;
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WVDrmPlugin::WVDrmPlugin(WvContentDecryptionModule* cdm) : mCDM(cdm) {}
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status_t WVDrmPlugin::openSession(Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId;
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CdmResponseType res = mCDM->OpenSession("com.widevine", &cdmSessionId);
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if (res != wvcdm::NO_ERROR) {
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return android::UNKNOWN_ERROR;
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}
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sessionId.clear();
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sessionId.appendArray(reinterpret_cast<const uint8_t*>(cdmSessionId.data()),
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cdmSessionId.size());
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return android::OK;
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}
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status_t WVDrmPlugin::closeSession(const Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmResponseType res = mCDM->CloseSession(cdmSessionId);
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if (res == wvcdm::NO_ERROR) {
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return android::OK;
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} else {
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return android::UNKNOWN_ERROR;
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}
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}
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status_t WVDrmPlugin::getLicenseRequest(
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const Vector<uint8_t>& sessionId,
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const Vector<uint8_t>& initData,
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const String8& mimeType,
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LicenseType licenseType,
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const KeyedVector<String8, String8>& optionalParameters,
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Vector<uint8_t>& request,
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String8& defaultUrl) {
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CdmLicenseType cdmLicenseType;
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if (licenseType == kLicenseType_Offline) {
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cdmLicenseType = kLicenseTypeOffline;
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} else if (licenseType == kLicenseType_Streaming) {
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cdmLicenseType = kLicenseTypeStreaming;
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} else {
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return BAD_TYPE;
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}
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmInitData cdmInitData(initData.begin(), initData.end());
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// TODO: Do something with mimeType?
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CdmNameValueMap cdmParameters;
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for (size_t i = 0; i < optionalParameters.size(); ++i) {
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const String8& key = optionalParameters.keyAt(i);
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const String8& value = optionalParameters.valueAt(i);
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string cdmKey(key.string(), key.size());
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string cdmValue(value.string(), value.size());
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cdmParameters[cdmKey] = cdmValue;
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}
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CdmKeyMessage keyRequest;
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CdmResponseType res = mCDM->GenerateKeyRequest(cdmSessionId, cdmInitData,
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cdmLicenseType,
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cdmParameters, &keyRequest);
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if (res != wvcdm::KEY_MESSAGE) {
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return android::UNKNOWN_ERROR;
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}
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// TODO: Do something more with defaultUrl?
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defaultUrl.clear();
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request.clear();
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request.appendArray(reinterpret_cast<const uint8_t*>(keyRequest.data()),
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keyRequest.size());
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return android::OK;
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}
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status_t WVDrmPlugin::provideLicenseResponse(
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const Vector<uint8_t>& sessionId,
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const Vector<uint8_t>& response) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmKeyResponse cdmResponse(response.begin(), response.end());
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CdmResponseType res = mCDM->AddKey(cdmSessionId, cdmResponse);
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if (res == wvcdm::KEY_ADDED || res == wvcdm::NO_ERROR) {
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return android::OK;
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} else {
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return android::UNKNOWN_ERROR;
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}
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}
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status_t WVDrmPlugin::removeLicense(const Vector<uint8_t>& sessionId) {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmResponseType res = mCDM->CancelKeyRequest(cdmSessionId);
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if (res == wvcdm::NO_ERROR) {
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return android::OK;
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} else {
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return android::UNKNOWN_ERROR;
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}
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}
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status_t WVDrmPlugin::queryLicenseStatus(
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const Vector<uint8_t>& sessionId,
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KeyedVector<String8, String8>& infoMap) const {
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CdmSessionId cdmSessionId(sessionId.begin(), sessionId.end());
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CdmNameValueMap cdmLicenseInfo;
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CdmResponseType res = mCDM->QueryKeyStatus(cdmSessionId, &cdmLicenseInfo);
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if (res != wvcdm::NO_ERROR) {
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return android::UNKNOWN_ERROR;
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}
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infoMap.clear();
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for (CdmNameValueMap::const_iterator iter = cdmLicenseInfo.begin();
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iter != cdmLicenseInfo.end();
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++iter) {
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const string& cdmKey = iter->first;
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const string& cdmValue = iter->second;
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String8 key(cdmKey.data(), cdmKey.size());
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String8 value(cdmValue.data(), cdmValue.size());
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infoMap.add(key, value);
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}
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return android::OK;
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}
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status_t WVDrmPlugin::getProvisionRequest(Vector<uint8_t>& request,
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String8& defaultUrl) {
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CdmProvisioningRequest cdmProvisionRequest;
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string cdmDefaultUrl;
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CdmResponseType res = mCDM->GetProvisioningRequest(&cdmProvisionRequest,
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&cdmDefaultUrl);
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if (res != wvcdm::NO_ERROR) {
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return android::UNKNOWN_ERROR;
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}
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request.clear();
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request.appendArray(reinterpret_cast<const uint8_t*>(
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cdmProvisionRequest.data()),
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cdmProvisionRequest.size());
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defaultUrl.clear();
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defaultUrl.setTo(cdmDefaultUrl.data(), cdmDefaultUrl.size());
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return android::OK;
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}
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status_t WVDrmPlugin::provideProvisionResponse(
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const Vector<uint8_t>& response) {
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CdmProvisioningResponse cdmResponse(response.begin(), response.end());
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CdmResponseType res = mCDM->HandleProvisioningResponse(cdmResponse);
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if (res == wvcdm::NO_ERROR) {
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return android::OK;
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} else {
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return android::UNKNOWN_ERROR;
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}
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}
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status_t WVDrmPlugin::getSecureStops(List<Vector<uint8_t> >& secureStops) {
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CdmSecureStops cdmSecureStops;
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CdmResponseType res = mCDM->GetSecureStops(&cdmSecureStops);
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if (res != wvcdm::NO_ERROR) {
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return android::UNKNOWN_ERROR;
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}
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secureStops.clear();
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for (CdmSecureStops::const_iterator iter = cdmSecureStops.begin();
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iter != cdmSecureStops.end();
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++iter) {
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const string& cdmStop = *iter;
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Vector<uint8_t> stop;
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stop.appendArray(reinterpret_cast<const uint8_t*>(cdmStop.data()),
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cdmStop.size());
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secureStops.push_back(stop);
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}
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return android::OK;
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}
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status_t WVDrmPlugin::releaseSecureStops(const Vector<uint8_t>& ssRelease) {
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CdmSecureStopReleaseMessage cdmMessage(ssRelease.begin(), ssRelease.end());
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CdmResponseType res = mCDM->ReleaseSecureStops(cdmMessage);
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if (res == wvcdm::NO_ERROR) {
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return android::OK;
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} else {
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return android::UNKNOWN_ERROR;
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}
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}
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status_t WVDrmPlugin::getPropertyString(const String8& name,
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String8& value) const {
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// TODO: Implement this function once the CDM query API is finalized.
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return -EPERM;
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}
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status_t WVDrmPlugin::getPropertyByteArray(const String8& name,
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Vector<uint8_t>& value) const {
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// TODO: Implement this function once the CDM query API is finalized.
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return -EPERM;
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}
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status_t WVDrmPlugin::setPropertyString(const String8& name,
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const String8& value) {
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// TODO: Implement this function once the CDM query API is finalized.
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return -EPERM;
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}
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status_t WVDrmPlugin::setPropertyByteArray(const String8& name,
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const Vector<uint8_t>& value) {
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// TODO: Implement this function once the CDM query API is finalized.
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return -EPERM;
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}
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// TODO: Hook up to event listener methods on CDM once Android API for
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// eventing is finalized.
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} // namespace wvdrm
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