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/* 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 "WMFClearKeyCDMFactory.h"
#include <string>
#include <Mferror.h>
#include "WMFClearKeyCDMAccess.h"
#include "WMFClearKeyUtils.h"
namespace mozilla {
using Microsoft::WRL::MakeAndInitialize;
ActivatableClass(WMFClearKeyCDMFactory);
bool isRequiringHDCP22OrAbove(LPCWSTR aType) {
if (aType == nullptr || *aType == L'\0') {
return false;
}
// The HDCP value follows the feature value in
// https://docs.microsoft.com/en-us/uwp/api/windows.media.protection.protectioncapabilities.istypesupported?view=winrt-19041
// - 1 (on without HDCP 2.2 Type 1 restriction)
// - 2 (on with HDCP 2.2 Type 1 restriction)
std::wstring wstr(aType);
std::string hdcpStr(wstr.begin(), wstr.end());
return wstr.find(L"hdcp=2") != std::string::npos;
}
STDMETHODIMP_(BOOL)
WMFClearKeyCDMFactory::IsTypeSupported(_In_ LPCWSTR aKeySystem,
_In_opt_ LPCWSTR aContentType) {
// For testing, return support for most of cases. Only returns false for some
// special cases.
bool needHDCP22OrAbove = isRequiringHDCP22OrAbove(aContentType);
ENTRY_LOG_ARGS("Need-HDCP2.2+=%d", needHDCP22OrAbove);
// As the API design of the Media Foundation, we can only know whether the
// requester is asking for HDCP 2.2+ or not, we can't know the exact HDCP
// version which is used in getStatusPolicy web api. Therefore, we pretend
// ourselves only having HDCP 2.1 compliant.
if (needHDCP22OrAbove) {
return false;
}
return true;
}
STDMETHODIMP
WMFClearKeyCDMFactory::CreateContentDecryptionModuleAccess(
LPCWSTR aKeySystem, IPropertyStore** aConfigurations,
DWORD aNumConfigurations, IMFContentDecryptionModuleAccess** aCdmAccess) {
ENTRY_LOG();
if (aKeySystem == nullptr || aKeySystem[0] == L'\0') {
ENTRY_LOG_ARGS("Key system is null or empty");
return MF_TYPE_ERR;
}
if (aNumConfigurations == 0) {
ENTRY_LOG_ARGS("No available configration");
return MF_TYPE_ERR;
}
if (!IsTypeSupported(aKeySystem, nullptr)) {
ENTRY_LOG_ARGS("Not supported type");
return MF_NOT_SUPPORTED_ERR;
}
RETURN_IF_FAILED((
MakeAndInitialize<WMFClearKeyCDMAccess, IMFContentDecryptionModuleAccess>(
aCdmAccess)));
ENTRY_LOG_ARGS("Created CDM access!");
return S_OK;
}
#undef LOG
} // namespace mozilla
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