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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 "WidevineAdapter.h"
#include "content_decryption_module.h"
#include "VideoUtils.h"
#include "WidevineDecryptor.h"
#include "WidevineUtils.h"
#include "WidevineVideoDecoder.h"
#include "gmp-api/gmp-entrypoints.h"
#include "gmp-api/gmp-decryption.h"
#include "gmp-api/gmp-video-codec.h"
#include "gmp-api/gmp-platform.h"
static const GMPPlatformAPI* sPlatform = nullptr;
namespace mozilla {
GMPErr GMPGetCurrentTime(GMPTimestamp* aOutTime) {
return sPlatform->getcurrenttime(aOutTime);
}
// Call on main thread only.
GMPErr GMPSetTimerOnMainThread(GMPTask* aTask, int64_t aTimeoutMS) {
return sPlatform->settimer(aTask, aTimeoutMS);
}
GMPErr GMPCreateRecord(const char* aRecordName,
uint32_t aRecordNameSize,
GMPRecord** aOutRecord,
GMPRecordClient* aClient)
{
return sPlatform->createrecord(aRecordName, aRecordNameSize, aOutRecord, aClient);
}
void
WidevineAdapter::SetAdaptee(PRLibrary* aLib)
{
mLib = aLib;
}
void* GetCdmHost(int aHostInterfaceVersion, void* aUserData)
{
Log("GetCdmHostFunc(%d, %p)", aHostInterfaceVersion, aUserData);
WidevineDecryptor* decryptor = reinterpret_cast<WidevineDecryptor*>(aUserData);
MOZ_ASSERT(decryptor);
return static_cast<cdm::Host_8*>(decryptor);
}
#define STRINGIFY(s) _STRINGIFY(s)
#define _STRINGIFY(s) #s
GMPErr
WidevineAdapter::GMPInit(const GMPPlatformAPI* aPlatformAPI)
{
#ifdef ENABLE_WIDEVINE_LOG
if (getenv("GMP_LOG_FILE")) {
// Clear log file.
FILE* f = fopen(getenv("GMP_LOG_FILE"), "w");
if (f) {
fclose(f);
}
}
#endif
sPlatform = aPlatformAPI;
if (!mLib) {
return GMPGenericErr;
}
auto init = reinterpret_cast<decltype(::INITIALIZE_CDM_MODULE)*>(
PR_FindFunctionSymbol(mLib, STRINGIFY(INITIALIZE_CDM_MODULE)));
if (!init) {
return GMPGenericErr;
}
Log(STRINGIFY(INITIALIZE_CDM_MODULE)"()");
init();
return GMPNoErr;
}
GMPErr
WidevineAdapter::GMPGetAPI(const char* aAPIName,
void* aHostAPI,
void** aPluginAPI,
uint32_t aDecryptorId)
{
Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p",
aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
if (!strcmp(aAPIName, GMP_API_DECRYPTOR)) {
if (WidevineDecryptor::GetInstance(aDecryptorId)) {
// We only support one CDM instance per PGMPDecryptor. Fail!
Log("WidevineAdapter::GMPGetAPI() Tried to create more than once CDM per IPDL actor! FAIL!");
return GMPQuotaExceededErr;
}
auto create = reinterpret_cast<decltype(::CreateCdmInstance)*>(
PR_FindFunctionSymbol(mLib, "CreateCdmInstance"));
if (!create) {
Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p FAILED to find CreateCdmInstance",
aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
return GMPGenericErr;
}
WidevineDecryptor* decryptor = new WidevineDecryptor();
auto cdm = reinterpret_cast<cdm::ContentDecryptionModule*>(
create(cdm::ContentDecryptionModule::kVersion,
kEMEKeySystemWidevine.get(),
kEMEKeySystemWidevine.Length(),
&GetCdmHost,
decryptor));
if (!cdm) {
Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p FAILED to create cdm",
aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
return GMPGenericErr;
}
Log("cdm: 0x%x", cdm);
RefPtr<CDMWrapper> wrapper(new CDMWrapper(cdm, decryptor));
decryptor->SetCDM(wrapper, aDecryptorId);
*aPluginAPI = decryptor;
} else if (!strcmp(aAPIName, GMP_API_VIDEO_DECODER)) {
RefPtr<CDMWrapper> wrapper = WidevineDecryptor::GetInstance(aDecryptorId);
if (!wrapper) {
Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p No cdm for video decoder",
aAPIName, aHostAPI, aPluginAPI, thiss, aDecryptorId);
return GMPGenericErr;
}
*aPluginAPI = new WidevineVideoDecoder(static_cast<GMPVideoHost*>(aHostAPI),
wrapper);
}
return *aPluginAPI ? GMPNoErr : GMPNotImplementedErr;
}
void
WidevineAdapter::GMPShutdown()
{
Log("WidevineAdapter::GMPShutdown()");
decltype(::DeinitializeCdmModule)* deinit;
deinit = (decltype(deinit))(PR_FindFunctionSymbol(mLib, "DeinitializeCdmModule"));
if (deinit) {
Log("DeinitializeCdmModule()");
deinit();
}
}
void
WidevineAdapter::GMPSetNodeId(const char* aNodeId, uint32_t aLength)
{
}
/* static */
bool
WidevineAdapter::Supports(int32_t aModuleVersion,
int32_t aInterfaceVersion,
int32_t aHostVersion)
{
return aModuleVersion == CDM_MODULE_VERSION &&
aInterfaceVersion == cdm::ContentDecryptionModule::kVersion &&
aHostVersion == cdm::Host_8::kVersion;
}
} // namespace mozilla
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