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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/EMEUtils.h"
#include "jsfriendapi.h"
#include "mozilla/StaticPrefs_media.h"
#include "mozilla/dom/KeySystemNames.h"
#include "mozilla/dom/UnionTypes.h"
namespace mozilla {
LogModule* GetEMELog() {
static LazyLogModule log("EME");
return log;
}
LogModule* GetEMEVerboseLog() {
static LazyLogModule log("EMEV");
return log;
}
ArrayData GetArrayBufferViewOrArrayBufferData(
const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView) {
MOZ_ASSERT(aBufferOrView.IsArrayBuffer() ||
aBufferOrView.IsArrayBufferView());
JS::AutoCheckCannotGC nogc;
if (aBufferOrView.IsArrayBuffer()) {
const dom::ArrayBuffer& buffer = aBufferOrView.GetAsArrayBuffer();
buffer.ComputeState();
return ArrayData(buffer.Data(), buffer.Length());
} else if (aBufferOrView.IsArrayBufferView()) {
const dom::ArrayBufferView& bufferview =
aBufferOrView.GetAsArrayBufferView();
bufferview.ComputeState();
return ArrayData(bufferview.Data(), bufferview.Length());
}
return ArrayData(nullptr, 0);
}
void CopyArrayBufferViewOrArrayBufferData(
const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView,
nsTArray<uint8_t>& aOutData) {
JS::AutoCheckCannotGC nogc;
ArrayData data = GetArrayBufferViewOrArrayBufferData(aBufferOrView);
aOutData.Clear();
if (!data.IsValid()) {
return;
}
aOutData.AppendElements(data.mData, data.mLength);
}
bool IsClearkeyKeySystem(const nsAString& aKeySystem) {
if (StaticPrefs::media_clearkey_test_key_systems_enabled()) {
return aKeySystem.EqualsLiteral(kClearKeyKeySystemName) ||
aKeySystem.EqualsLiteral(kClearKeyWithProtectionQueryKeySystemName);
}
return aKeySystem.EqualsLiteral(kClearKeyKeySystemName);
}
bool IsWidevineKeySystem(const nsAString& aKeySystem) {
return aKeySystem.EqualsLiteral(kWidevineKeySystemName);
}
#ifdef MOZ_WMF_CDM
bool IsPlayReadyKeySystemAndSupported(const nsAString& aKeySystem) {
if (!StaticPrefs::media_eme_playready_enabled()) {
return false;
}
// 1=enabled encrypted and clear, 2=enabled encrytped.
if (StaticPrefs::media_wmf_media_engine_enabled() != 1 &&
StaticPrefs::media_wmf_media_engine_enabled() != 2) {
return false;
}
return aKeySystem.EqualsLiteral(kPlayReadyKeySystemName) ||
aKeySystem.EqualsLiteral(kPlayReadyKeySystemHardware);
}
#endif
nsString KeySystemToProxyName(const nsAString& aKeySystem) {
if (IsClearkeyKeySystem(aKeySystem)) {
return u"gmp-clearkey"_ns;
}
if (IsWidevineKeySystem(aKeySystem)) {
return u"gmp-widevinecdm"_ns;
}
#ifdef MOZ_WMF_CDM
if (IsPlayReadyKeySystemAndSupported(aKeySystem)) {
return u"mfcdm-playready"_ns;
}
#endif
MOZ_ASSERT_UNREACHABLE("Not supported key system!");
return u""_ns;
}
#define ENUM_TO_STR(enumVal) \
case enumVal: \
return #enumVal
const char* ToMediaKeyStatusStr(dom::MediaKeyStatus aStatus) {
switch (aStatus) {
ENUM_TO_STR(dom::MediaKeyStatus::Usable);
ENUM_TO_STR(dom::MediaKeyStatus::Expired);
ENUM_TO_STR(dom::MediaKeyStatus::Released);
ENUM_TO_STR(dom::MediaKeyStatus::Output_restricted);
ENUM_TO_STR(dom::MediaKeyStatus::Output_downscaled);
ENUM_TO_STR(dom::MediaKeyStatus::Status_pending);
ENUM_TO_STR(dom::MediaKeyStatus::Internal_error);
default:
return "Undefined MediaKeyStatus!";
}
}
#undef ENUM_TO_STR
} // namespace mozilla
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