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/*
* Copyright (C) 2017 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.
*/
#ifndef NUPLAYER_DRM_H_
#define NUPLAYER_DRM_H_
#include <binder/Parcel.h>
#include <media/ICrypto.h>
#include <media/IDrm.h>
#include <media/stagefright/MetaData.h> // for CryptInfo
namespace android {
struct DrmUUID {
static const int UUID_SIZE = 16;
DrmUUID() {
memset(this->uuid, 0, sizeof(uuid));
}
// to allow defining Vector/KeyedVector of UUID type
DrmUUID(const DrmUUID &a) {
memcpy(this->uuid, a.uuid, sizeof(uuid));
}
// to allow defining Vector/KeyedVector of UUID type
DrmUUID(const uint8_t uuid_in[UUID_SIZE]) {
memcpy(this->uuid, uuid_in, sizeof(uuid));
}
const uint8_t *ptr() const {
return uuid;
}
String8 toHexString() const {
return arrayToHex(uuid, UUID_SIZE);
}
static String8 toHexString(const uint8_t uuid_in[UUID_SIZE]) {
return arrayToHex(uuid_in, UUID_SIZE);
}
static String8 arrayToHex(const uint8_t *array, int bytes) {
String8 result;
for (int i = 0; i < bytes; i++) {
result.appendFormat("%02x", array[i]);
}
return result;
}
protected:
uint8_t uuid[UUID_SIZE];
};
struct NuPlayerDrm {
// static helpers - internal
protected:
static sp<IDrm> CreateDrm(status_t *pstatus);
static sp<ICrypto> createCrypto(status_t *pstatus);
static Vector<DrmUUID> parsePSSH(const void *pssh, size_t psshsize);
static Vector<DrmUUID> getSupportedDrmSchemes(const void *pssh, size_t psshsize);
// static helpers - public
public:
static sp<ICrypto> createCryptoAndPlugin(const uint8_t uuid[16],
const Vector<uint8_t> &drmSessionId, status_t &status);
// Parcel has only private copy constructor so passing it in rather than returning
static void retrieveDrmInfo(const void *pssh, size_t psshsize, Parcel *parcel);
////////////////////////////////////////////////////////////////////////////////////////////
/// Helpers for NuPlayerDecoder
////////////////////////////////////////////////////////////////////////////////////////////
static const uint8_t kBlockSize = 16; // AES_BLOCK_SIZE
struct CryptoInfo {
int numSubSamples;
uint8_t key[kBlockSize];
uint8_t iv[kBlockSize];
CryptoPlugin::Mode mode;
CryptoPlugin::Pattern pattern;
CryptoPlugin::SubSample *subSamples;
};
static CryptoInfo *makeCryptoInfo(
int numSubSamples,
uint8_t key[kBlockSize],
uint8_t iv[kBlockSize],
CryptoPlugin::Mode mode,
size_t *clearbytes,
size_t *encryptedbytes);
static CryptoInfo *getSampleCryptoInfo(MetaDataBase &meta);
}; // NuPlayerDrm
} // android
#endif //NUPLAYER_DRM_H_