1a8aa0dd05
Builds libwvmdrmengine.so, which is loaded by the new MediaDrm APIs to support playback of Widevine/CENC protected content. Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c
90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
//
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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 "WVCryptoFactory.h"
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#include <dlfcn.h>
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#include "utils/Errors.h"
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#include "WVCDMSingleton.h"
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#include "WVCryptoPlugin.h"
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#include "WVUUID.h"
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namespace wvdrm {
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using namespace android;
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WVCryptoFactory::WVCryptoFactory()
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: mLegacyLibraryHandle(NULL),
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mLegacyFactory(NULL) {
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mLegacyLibraryHandle = dlopen("libdrmdecrypt.so", RTLD_NOW);
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if (mLegacyLibraryHandle == NULL) {
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ALOGE("Unable to locate libdrmdecrypt.so");
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} else {
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typedef CryptoFactory* (*CreateCryptoFactoryFunc)();
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CreateCryptoFactoryFunc legacyCreateCryptoFactory =
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(CreateCryptoFactoryFunc)dlsym(mLegacyLibraryHandle,
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"createCryptoFactory");
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if (legacyCreateCryptoFactory == NULL) {
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ALOGE("Unable to find legacy symbol 'createCryptoFactory'.");
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dlclose(mLegacyLibraryHandle);
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mLegacyLibraryHandle = NULL;
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} else {
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mLegacyFactory = legacyCreateCryptoFactory();
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if (mLegacyFactory == NULL) {
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ALOGE("Legacy createCryptoFactory() failed.");
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dlclose(mLegacyLibraryHandle);
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mLegacyLibraryHandle = NULL;
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}
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}
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}
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}
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WVCryptoFactory::~WVCryptoFactory() {
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if (mLegacyFactory != NULL) {
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delete mLegacyFactory;
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mLegacyFactory = NULL;
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}
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if (mLegacyLibraryHandle != NULL) {
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dlclose(mLegacyLibraryHandle);
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mLegacyLibraryHandle = NULL;
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}
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}
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bool WVCryptoFactory::isCryptoSchemeSupported(const uint8_t uuid[16]) const {
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return isWidevineUUID(uuid);
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}
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status_t WVCryptoFactory::createPlugin(const uint8_t uuid[16], const void* data,
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size_t size, CryptoPlugin** plugin) {
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if (!isCryptoSchemeSupported(uuid)) {
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*plugin = NULL;
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return BAD_VALUE;
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}
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// 0 size means they want an old-style Widevine plugin
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if (size == 0) {
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if (mLegacyFactory == NULL) {
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return -EINVAL;
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}
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return mLegacyFactory->createPlugin(uuid, data, size, plugin);
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}
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// We received a session ID, so create a CENC plugin.
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*plugin = new WVCryptoPlugin(data, size, getCDM());
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return OK;
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}
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} // namespace wvdrm
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