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176 lines
4.2 KiB
176 lines
4.2 KiB
/*
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* Copyright (C) 2012 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 "HDCP"
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#include <utils/Log.h>
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#include "HDCP.h"
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#include <media/stagefright/foundation/ADebug.h>
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#include <dlfcn.h>
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namespace android {
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HDCP::HDCP(bool createEncryptionModule)
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: mIsEncryptionModule(createEncryptionModule),
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mLibHandle(NULL),
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mHDCPModule(NULL) {
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mLibHandle = dlopen("libstagefright_hdcp.so", RTLD_NOW);
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if (mLibHandle == NULL) {
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ALOGE("Unable to locate libstagefright_hdcp.so");
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return;
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}
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typedef HDCPModule *(*CreateHDCPModuleFunc)(
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void *, HDCPModule::ObserverFunc);
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CreateHDCPModuleFunc createHDCPModule =
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mIsEncryptionModule
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? (CreateHDCPModuleFunc)dlsym(mLibHandle, "createHDCPModule")
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: (CreateHDCPModuleFunc)dlsym(
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mLibHandle, "createHDCPModuleForDecryption");
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if (createHDCPModule == NULL) {
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ALOGE("Unable to find symbol 'createHDCPModule'.");
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} else if ((mHDCPModule = createHDCPModule(
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this, &HDCP::ObserveWrapper)) == NULL) {
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ALOGE("createHDCPModule failed.");
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}
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}
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HDCP::~HDCP() {
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Mutex::Autolock autoLock(mLock);
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if (mHDCPModule != NULL) {
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delete mHDCPModule;
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mHDCPModule = NULL;
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}
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if (mLibHandle != NULL) {
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dlclose(mLibHandle);
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mLibHandle = NULL;
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}
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}
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status_t HDCP::setObserver(const sp<IHDCPObserver> &observer) {
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Mutex::Autolock autoLock(mLock);
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if (mHDCPModule == NULL) {
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return NO_INIT;
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}
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mObserver = observer;
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return OK;
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}
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status_t HDCP::initAsync(const char *host, unsigned port) {
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Mutex::Autolock autoLock(mLock);
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if (mHDCPModule == NULL) {
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return NO_INIT;
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}
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return mHDCPModule->initAsync(host, port);
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}
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status_t HDCP::shutdownAsync() {
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Mutex::Autolock autoLock(mLock);
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if (mHDCPModule == NULL) {
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return NO_INIT;
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}
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return mHDCPModule->shutdownAsync();
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}
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uint32_t HDCP::getCaps() {
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Mutex::Autolock autoLock(mLock);
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if (mHDCPModule == NULL) {
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return NO_INIT;
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}
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return mHDCPModule->getCaps();
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}
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status_t HDCP::encrypt(
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const void *inData, size_t size, uint32_t streamCTR,
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uint64_t *outInputCTR, void *outData) {
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Mutex::Autolock autoLock(mLock);
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CHECK(mIsEncryptionModule);
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if (mHDCPModule == NULL) {
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*outInputCTR = 0;
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return NO_INIT;
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}
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return mHDCPModule->encrypt(inData, size, streamCTR, outInputCTR, outData);
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}
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status_t HDCP::encryptNative(
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const sp<GraphicBuffer> &graphicBuffer,
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size_t offset, size_t size, uint32_t streamCTR,
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uint64_t *outInputCTR, void *outData) {
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Mutex::Autolock autoLock(mLock);
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CHECK(mIsEncryptionModule);
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if (mHDCPModule == NULL) {
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*outInputCTR = 0;
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return NO_INIT;
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}
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return mHDCPModule->encryptNative(graphicBuffer->handle,
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offset, size, streamCTR, outInputCTR, outData);
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}
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status_t HDCP::decrypt(
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const void *inData, size_t size,
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uint32_t streamCTR, uint64_t outInputCTR, void *outData) {
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Mutex::Autolock autoLock(mLock);
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CHECK(!mIsEncryptionModule);
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if (mHDCPModule == NULL) {
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return NO_INIT;
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}
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return mHDCPModule->decrypt(inData, size, streamCTR, outInputCTR, outData);
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}
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// static
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void HDCP::ObserveWrapper(void *me, int msg, int ext1, int ext2) {
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static_cast<HDCP *>(me)->observe(msg, ext1, ext2);
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}
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void HDCP::observe(int msg, int ext1, int ext2) {
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Mutex::Autolock autoLock(mLock);
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if (mObserver != NULL) {
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mObserver->notify(msg, ext1, ext2, NULL /* obj */);
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}
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}
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} // namespace android
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