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108 lines
3.0 KiB
108 lines
3.0 KiB
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "DescramblerImpl"
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#include <media/cas/DescramblerAPI.h>
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#include <media/DescramblerImpl.h>
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#include <media/SharedLibrary.h>
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#include <utils/Log.h>
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#include <binder/IMemory.h>
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namespace android {
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static Status getBinderStatus(status_t err) {
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if (err == OK) {
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return Status::ok();
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}
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if (err == BAD_VALUE) {
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return Status::fromExceptionCode(Status::EX_ILLEGAL_ARGUMENT);
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}
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if (err == INVALID_OPERATION) {
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return Status::fromExceptionCode(Status::EX_ILLEGAL_STATE);
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}
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return Status::fromServiceSpecificError(err);
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}
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static String8 sessionIdToString(const CasSessionId &sessionId) {
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String8 result;
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for (size_t i = 0; i < sessionId.size(); i++) {
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result.appendFormat("%02x ", sessionId[i]);
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}
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if (result.isEmpty()) {
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result.append("(null)");
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}
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return result;
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}
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DescramblerImpl::DescramblerImpl(
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const sp<SharedLibrary>& library, DescramblerPlugin *plugin) :
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mLibrary(library), mPlugin(plugin) {
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ALOGV("CTOR: mPlugin=%p", mPlugin);
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}
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DescramblerImpl::~DescramblerImpl() {
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ALOGV("DTOR: mPlugin=%p", mPlugin);
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release();
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}
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Status DescramblerImpl::setMediaCasSession(const CasSessionId& sessionId) {
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ALOGV("setMediaCasSession: sessionId=%s",
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sessionIdToString(sessionId).string());
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return getBinderStatus(mPlugin->setMediaCasSession(sessionId));
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}
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Status DescramblerImpl::requiresSecureDecoderComponent(
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const String16& mime, bool *result) {
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*result = mPlugin->requiresSecureDecoderComponent(String8(mime));
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return getBinderStatus(OK);
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}
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Status DescramblerImpl::descramble(
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const DescrambleInfo& info, int32_t *result) {
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ALOGV("descramble");
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*result = mPlugin->descramble(
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info.dstType != DescrambleInfo::kDestinationTypeVmPointer,
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info.scramblingControl,
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info.numSubSamples,
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info.subSamples,
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info.srcMem->pointer(),
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info.srcOffset,
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info.dstType == DescrambleInfo::kDestinationTypeVmPointer ?
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info.srcMem->pointer() : info.dstPtr,
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info.dstOffset,
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NULL);
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return getBinderStatus(*result >= 0 ? OK : *result);
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}
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Status DescramblerImpl::release() {
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ALOGV("release: mPlugin=%p", mPlugin);
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if (mPlugin != NULL) {
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delete mPlugin;
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mPlugin = NULL;
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}
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return Status::ok();
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}
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} // namespace android
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