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gecko-dev/dom/media/eme/MediaKeySystemAccess.cpp
Boris Zbarsky dc24477d79 Bug 1117172 part 3. Change the wrappercached WrapObject methods to allow passing in aGivenProto. r=peterv 
The only manual changes here are to BindingUtils.h, BindingUtils.cpp,
Codegen.py, Element.cpp, IDBFileRequest.cpp, IDBObjectStore.cpp,
dom/workers/Navigator.cpp, WorkerPrivate.cpp, DeviceStorageRequestChild.cpp,
Notification.cpp, nsGlobalWindow.cpp, MessagePort.cpp, nsJSEnvironment.cpp,
Sandbox.cpp, XPCConvert.cpp, ExportHelpers.cpp, and DataStoreService.cpp.  The
rest of this diff was generated by running the following commands:

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObject\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(Binding(?:_workers)?::Wrap\((?:aCx|cx|aContext|aCtx|js), [^,)]+)\)/\1, aGivenProto)/g'
2015-03-19 10:13:33 -04:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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/dom/MediaKeySystemAccess.h"
#include "mozilla/dom/MediaKeySystemAccessBinding.h"
#include "mozilla/Preferences.h"
#include "nsContentTypeParser.h"
#ifdef MOZ_FMP4
#include "MP4Decoder.h"
#endif
#ifdef XP_WIN
#include "mozilla/WindowsVersion.h"
#endif
#include "nsContentCID.h"
#include "nsServiceManagerUtils.h"
#include "mozIGeckoMediaPluginService.h"
#include "VideoUtils.h"
#include "mozilla/Services.h"
#include "nsIObserverService.h"
#include "mozilla/EMEUtils.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(MediaKeySystemAccess,
mParent)
NS_IMPL_CYCLE_COLLECTING_ADDREF(MediaKeySystemAccess)
NS_IMPL_CYCLE_COLLECTING_RELEASE(MediaKeySystemAccess)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaKeySystemAccess)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
MediaKeySystemAccess::MediaKeySystemAccess(nsPIDOMWindow* aParent,
const nsAString& aKeySystem)
: mParent(aParent)
, mKeySystem(aKeySystem)
{
}
MediaKeySystemAccess::~MediaKeySystemAccess()
{
}
JSObject*
MediaKeySystemAccess::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return MediaKeySystemAccessBinding::Wrap(aCx, this, aGivenProto);
}
nsPIDOMWindow*
MediaKeySystemAccess::GetParentObject() const
{
return mParent;
}
void
MediaKeySystemAccess::GetKeySystem(nsString& aRetVal) const
{
aRetVal = mKeySystem;
}
already_AddRefed<Promise>
MediaKeySystemAccess::CreateMediaKeys(ErrorResult& aRv)
{
nsRefPtr<MediaKeys> keys(new MediaKeys(mParent, mKeySystem));
return keys->Init(aRv);
}
static bool
HaveGMPFor(mozIGeckoMediaPluginService* aGMPService,
const nsCString& aKeySystem,
const nsCString& aAPI,
const nsCString& aTag = EmptyCString())
{
nsTArray<nsCString> tags;
tags.AppendElement(aKeySystem);
if (!aTag.IsEmpty()) {
tags.AppendElement(aTag);
}
bool hasPlugin = false;
if (NS_FAILED(aGMPService->HasPluginForAPI(aAPI,
&tags,
&hasPlugin))) {
return false;
}
return hasPlugin;
}
static MediaKeySystemStatus
EnsureMinCDMVersion(mozIGeckoMediaPluginService* aGMPService,
const nsAString& aKeySystem,
int32_t aMinCdmVersion)
{
if (aMinCdmVersion == NO_CDM_VERSION) {
return MediaKeySystemStatus::Available;
}
nsTArray<nsCString> tags;
tags.AppendElement(NS_ConvertUTF16toUTF8(aKeySystem));
nsAutoCString versionStr;
if (NS_FAILED(aGMPService->GetPluginVersionForAPI(NS_LITERAL_CSTRING(GMP_API_DECRYPTOR),
&tags,
versionStr))) {
return MediaKeySystemStatus::Error;
}
nsresult rv;
int32_t version = versionStr.ToInteger(&rv);
if (NS_FAILED(rv) || version < 0 || aMinCdmVersion > version) {
return MediaKeySystemStatus::Cdm_insufficient_version;
}
return MediaKeySystemStatus::Available;
}
/* static */
MediaKeySystemStatus
MediaKeySystemAccess::GetKeySystemStatus(const nsAString& aKeySystem,
int32_t aMinCdmVersion)
{
MOZ_ASSERT(Preferences::GetBool("media.eme.enabled", false));
nsCOMPtr<mozIGeckoMediaPluginService> mps =
do_GetService("@mozilla.org/gecko-media-plugin-service;1");
if (NS_WARN_IF(!mps)) {
return MediaKeySystemStatus::Error;
}
if (aKeySystem.EqualsLiteral("org.w3.clearkey")) {
if (!Preferences::GetBool("media.eme.clearkey.enabled", true)) {
return MediaKeySystemStatus::Cdm_disabled;
}
if (!HaveGMPFor(mps,
NS_LITERAL_CSTRING("org.w3.clearkey"),
NS_LITERAL_CSTRING(GMP_API_DECRYPTOR))) {
return MediaKeySystemStatus::Cdm_not_installed;
}
return EnsureMinCDMVersion(mps, aKeySystem, aMinCdmVersion);
}
#ifdef XP_WIN
if ((aKeySystem.EqualsLiteral("com.adobe.access") ||
aKeySystem.EqualsLiteral("com.adobe.primetime"))) {
// Win Vista and later only.
if (!IsVistaOrLater()) {
return MediaKeySystemStatus::Cdm_not_supported;
}
if (!Preferences::GetBool("media.gmp-eme-adobe.enabled", false)) {
return MediaKeySystemStatus::Cdm_disabled;
}
if (!HaveGMPFor(mps,
NS_ConvertUTF16toUTF8(aKeySystem),
NS_LITERAL_CSTRING(GMP_API_DECRYPTOR))) {
return MediaKeySystemStatus::Cdm_not_installed;
}
return EnsureMinCDMVersion(mps, aKeySystem, aMinCdmVersion);
}
#endif
return MediaKeySystemStatus::Cdm_not_supported;
}
static bool
IsPlayableWithGMP(mozIGeckoMediaPluginService* aGMPS,
const nsAString& aKeySystem,
const nsAString& aContentType)
{
#ifdef MOZ_FMP4
nsContentTypeParser parser(aContentType);
nsAutoString mimeType;
nsresult rv = parser.GetType(mimeType);
if (NS_FAILED(rv)) {
return false;
}
if (!mimeType.EqualsLiteral("audio/mp4") &&
!mimeType.EqualsLiteral("audio/x-m4a") &&
!mimeType.EqualsLiteral("video/mp4")) {
return false;
}
nsAutoString codecs;
parser.GetParameter("codecs", codecs);
NS_ConvertUTF16toUTF8 mimeTypeUTF8(mimeType);
bool hasAAC = false;
bool hasH264 = false;
bool hasMP3 = false;
if (!MP4Decoder::CanHandleMediaType(mimeTypeUTF8,
codecs,
hasAAC,
hasH264,
hasMP3) ||
hasMP3) {
return false;
}
return (!hasAAC || !HaveGMPFor(aGMPS,
NS_ConvertUTF16toUTF8(aKeySystem),
NS_LITERAL_CSTRING(GMP_API_DECRYPTOR),
NS_LITERAL_CSTRING("aac"))) &&
(!hasH264 || !HaveGMPFor(aGMPS,
NS_ConvertUTF16toUTF8(aKeySystem),
NS_LITERAL_CSTRING(GMP_API_DECRYPTOR),
NS_LITERAL_CSTRING("h264")));
#else
return false;
#endif
}
/* static */
bool
MediaKeySystemAccess::IsSupported(const nsAString& aKeySystem,
const Sequence<MediaKeySystemOptions>& aOptions)
{
nsCOMPtr<mozIGeckoMediaPluginService> mps =
do_GetService("@mozilla.org/gecko-media-plugin-service;1");
if (NS_WARN_IF(!mps)) {
return false;
}
for (size_t i = 0; i < aOptions.Length(); i++) {
const MediaKeySystemOptions& options = aOptions[i];
if (!options.mInitDataType.EqualsLiteral("cenc")) {
continue;
}
if (!options.mAudioCapability.IsEmpty() ||
!options.mVideoCapability.IsEmpty()) {
// Don't support any capabilites until we know we have a CDM with
// capabilities...
continue;
}
if (!options.mAudioType.IsEmpty() &&
!IsPlayableWithGMP(mps, aKeySystem, options.mAudioType)) {
continue;
}
if (!options.mVideoType.IsEmpty() &&
!IsPlayableWithGMP(mps, aKeySystem, options.mVideoType)) {
continue;
}
// Our sandbox provides an origin specific unique identifier, and the
// ability to persist data. We don't yet have a way to turn those off
// and on for specific GMPs/CDMs, so we don't check the uniqueidentifier
// and stateful attributes here.
return true;
}
return false;
}
/* static */
void
MediaKeySystemAccess::NotifyObservers(nsIDOMWindow* aWindow,
const nsAString& aKeySystem,
MediaKeySystemStatus aStatus)
{
RequestMediaKeySystemAccessNotification data;
data.mKeySystem = aKeySystem;
data.mStatus = aStatus;
nsAutoString json;
data.ToJSON(json);
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->NotifyObservers(aWindow, "mediakeys-request", json.get());
}
}
} // namespace dom
} // namespace mozilla
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