| |
| /* |
| * Copyright (C) 2017 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 "DescramblerImpl" |
| |
| #include <media/cas/DescramblerAPI.h> |
| #include <media/DescramblerImpl.h> |
| #include <media/SharedLibrary.h> |
| #include <utils/Log.h> |
| #include <binder/IMemory.h> |
| |
| namespace android { |
| |
| static Status getBinderStatus(status_t err) { |
| if (err == OK) { |
| return Status::ok(); |
| } |
| if (err == BAD_VALUE) { |
| return Status::fromExceptionCode(Status::EX_ILLEGAL_ARGUMENT); |
| } |
| if (err == INVALID_OPERATION) { |
| return Status::fromExceptionCode(Status::EX_ILLEGAL_STATE); |
| } |
| return Status::fromServiceSpecificError(err); |
| } |
| |
| static String8 sessionIdToString(const CasSessionId &sessionId) { |
| String8 result; |
| for (size_t i = 0; i < sessionId.size(); i++) { |
| result.appendFormat("%02x ", sessionId[i]); |
| } |
| if (result.isEmpty()) { |
| result.append("(null)"); |
| } |
| return result; |
| } |
| |
| DescramblerImpl::DescramblerImpl( |
| const sp<SharedLibrary>& library, DescramblerPlugin *plugin) : |
| mLibrary(library), mPlugin(plugin) { |
| ALOGV("CTOR: mPlugin=%p", mPlugin); |
| } |
| |
| DescramblerImpl::~DescramblerImpl() { |
| ALOGV("DTOR: mPlugin=%p", mPlugin); |
| release(); |
| } |
| |
| Status DescramblerImpl::setMediaCasSession(const CasSessionId& sessionId) { |
| ALOGV("setMediaCasSession: sessionId=%s", |
| sessionIdToString(sessionId).string()); |
| |
| return getBinderStatus(mPlugin->setMediaCasSession(sessionId)); |
| } |
| |
| Status DescramblerImpl::requiresSecureDecoderComponent( |
| const String16& mime, bool *result) { |
| *result = mPlugin->requiresSecureDecoderComponent(String8(mime)); |
| |
| return getBinderStatus(OK); |
| } |
| |
| Status DescramblerImpl::descramble( |
| const DescrambleInfo& info, int32_t *result) { |
| ALOGV("descramble"); |
| |
| *result = mPlugin->descramble( |
| info.dstType != DescrambleInfo::kDestinationTypeVmPointer, |
| info.scramblingControl, |
| info.numSubSamples, |
| info.subSamples, |
| info.srcMem->pointer(), |
| info.srcOffset, |
| info.dstType == DescrambleInfo::kDestinationTypeVmPointer ? |
| info.srcMem->pointer() : info.dstPtr, |
| info.dstOffset, |
| NULL); |
| |
| return getBinderStatus(*result >= 0 ? OK : *result); |
| } |
| |
| Status DescramblerImpl::release() { |
| ALOGV("release: mPlugin=%p", mPlugin); |
| |
| if (mPlugin != NULL) { |
| delete mPlugin; |
| mPlugin = NULL; |
| } |
| return Status::ok(); |
| } |
| |
| } // namespace android |
| |