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