3847adb78e
(This is a merge of go/wvgerrit/22441) The IV incrementation code in Widevine DRM Plugin includes complexity for handling partial crypto blocks in "cens" mode, a situation that cannot actually happen. This commit changes the code to no longer handle this case specially. Bug: 28696811 Test: No tests for this code path due to bug 28295739 Change-Id: I77f8434a9785bf028509387c06db217a5de2b91b
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
//
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// Copyright 2013 Google Inc. All Rights Reserved.
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//
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#ifndef WV_CRYPTO_PLUGIN_H_
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#define WV_CRYPTO_PLUGIN_H_
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#include <stdint.h>
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#include "utils/StrongPointer.h"
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#include "utils/Vector.h"
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#include "media/hardware/CryptoAPI.h"
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#include "media/stagefright/foundation/ABase.h"
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#include "media/stagefright/foundation/AString.h"
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#include "wv_content_decryption_module.h"
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namespace wvdrm {
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class WVCryptoPlugin : public android::CryptoPlugin {
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public:
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WVCryptoPlugin(const void* data, size_t size,
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const android::sp<wvcdm::WvContentDecryptionModule>& cdm);
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virtual ~WVCryptoPlugin() {}
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virtual bool requiresSecureDecoderComponent(const char* mime) const;
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virtual void notifyResolution(uint32_t width, uint32_t height);
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virtual android::status_t setMediaDrmSession(
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const android::Vector<uint8_t>& sessionId);
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virtual ssize_t decrypt(bool secure, const uint8_t key[16],
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const uint8_t iv[16], Mode mode, const Pattern &pattern,
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const void* srcPtr,
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const SubSample* subSamples, size_t numSubSamples,
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void* dstPtr, android::AString* errorDetailMsg);
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private:
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DISALLOW_EVIL_CONSTRUCTORS(WVCryptoPlugin);
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android::sp<wvcdm::WvContentDecryptionModule> const mCDM;
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bool mTestMode;
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wvcdm::CdmSessionId mSessionId;
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wvcdm::CdmSessionId configureTestMode(const void* data, size_t size);
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static wvcdm::CdmResponseType countEncryptedBlocksInPatternedRange(
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size_t range, const Pattern& pattern, uint64_t* result);
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static void incrementIV(uint64_t increaseBy, std::vector<uint8_t>* ivPtr);
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};
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} // namespace wvdrm
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#endif // WV_CRYPTO_PLUGIN_H_
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