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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WidevineUtils.h"
#include "WidevineDecryptor.h"
#include "gmp-api/gmp-errors.h"
#include <stdarg.h>
#include <stdio.h>
namespace mozilla {
#ifdef ENABLE_WIDEVINE_LOG
void
Log(const char* aFormat, ...)
{
va_list ap;
va_start(ap, aFormat);
const size_t len = 1024;
char buf[len];
vsnprintf(buf, len, aFormat, ap);
va_end(ap);
if (getenv("GMP_LOG_FILE")) {
FILE* f = fopen(getenv("GMP_LOG_FILE"), "a");
if (f) {
fprintf(f, "%s\n", buf);
fflush(f);
fclose(f);
f = nullptr;
}
} else {
printf("LOG: %s\n", buf);
}
}
#endif // ENABLE_WIDEVINE_LOG
GMPErr
ToGMPErr(cdm::Status aStatus)
{
switch (aStatus) {
case cdm::kSuccess: return GMPNoErr;
case cdm::kNeedMoreData: return GMPGenericErr;
case cdm::kNoKey: return GMPNoKeyErr;
case cdm::kSessionError: return GMPGenericErr;
case cdm::kDecryptError: return GMPCryptoErr;
case cdm::kDecodeError: return GMPDecodeErr;
case cdm::kDeferredInitialization: return GMPGenericErr;
default: return GMPGenericErr;
}
}
void InitInputBuffer(const GMPEncryptedBufferMetadata* aCrypto,
int64_t aTimestamp,
const uint8_t* aData,
size_t aDataSize,
cdm::InputBuffer &aInputBuffer,
nsTArray<cdm::SubsampleEntry> &aSubsamples)
{
if (aCrypto) {
aInputBuffer.key_id = aCrypto->KeyId();
aInputBuffer.key_id_size = aCrypto->KeyIdSize();
aInputBuffer.iv = aCrypto->IV();
aInputBuffer.iv_size = aCrypto->IVSize();
aInputBuffer.num_subsamples = aCrypto->NumSubsamples();
aSubsamples.SetCapacity(aInputBuffer.num_subsamples);
const uint16_t* clear = aCrypto->ClearBytes();
const uint32_t* cipher = aCrypto->CipherBytes();
for (size_t i = 0; i < aCrypto->NumSubsamples(); i++) {
aSubsamples.AppendElement(cdm::SubsampleEntry(clear[i], cipher[i]));
}
}
aInputBuffer.data = aData;
aInputBuffer.data_size = aDataSize;
aInputBuffer.subsamples = aSubsamples.Elements();
aInputBuffer.timestamp = aTimestamp;
}
CDMWrapper::CDMWrapper(cdm::ContentDecryptionModule_8* aCDM,
WidevineDecryptor* aDecryptor)
: mCDM(aCDM)
, mDecryptor(aDecryptor)
{
MOZ_ASSERT(mCDM);
}
CDMWrapper::~CDMWrapper()
{
Log("CDMWrapper destroying CDM=%p", mCDM);
mCDM->Destroy();
mCDM = nullptr;
}
} // namespace mozilla
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