gecko-dev/dom/tv/TVSource.cpp

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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/dom/Promise.h"
#include "mozilla/dom/TVChannel.h"
#include "mozilla/dom/TVCurrentChannelChangedEvent.h"
#include "mozilla/dom/TVEITBroadcastedEvent.h"
#include "mozilla/dom/TVListeners.h"
#include "mozilla/dom/TVScanningStateChangedEvent.h"
#include "mozilla/dom/TVServiceCallbacks.h"
#include "mozilla/dom/TVServiceFactory.h"
#include "mozilla/dom/TVTuner.h"
#include "mozilla/dom/TVUtils.h"
#include "nsITVService.h"
#include "nsServiceManagerUtils.h"
#include "TVSource.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_CLASS(TVSource)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(TVSource,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTVService)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTuner)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCurrentChannel)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(TVSource,
DOMEventTargetHelper)
tmp->Shutdown();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mTVService)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mTuner)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCurrentChannel)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_ADDREF_INHERITED(TVSource, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(TVSource, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TVSource)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
TVSource::TVSource(nsPIDOMWindow* aWindow,
TVSourceType aType,
TVTuner* aTuner)
: DOMEventTargetHelper(aWindow)
, mTuner(aTuner)
, mType(aType)
, mIsScanning(false)
{
MOZ_ASSERT(mTuner);
}
TVSource::~TVSource()
{
Shutdown();
}
/* static */ already_AddRefed<TVSource>
TVSource::Create(nsPIDOMWindow* aWindow,
TVSourceType aType,
TVTuner* aTuner)
{
nsRefPtr<TVSource> source = new TVSource(aWindow, aType, aTuner);
return (source->Init()) ? source.forget() : nullptr;
}
bool
TVSource::Init()
{
mTVService = TVServiceFactory::AutoCreateTVService();
NS_ENSURE_TRUE(mTVService, false);
nsCOMPtr<nsITVSourceListener> sourceListener;
mTVService->GetSourceListener(getter_AddRefs(sourceListener));
NS_ENSURE_TRUE(sourceListener, false);
(static_cast<TVSourceListener*>(sourceListener.get()))->RegisterSource(this);
return true;
}
void
TVSource::Shutdown()
{
if (!mTVService) {
return;
}
nsCOMPtr<nsITVSourceListener> sourceListener;
mTVService->GetSourceListener(getter_AddRefs(sourceListener));
if (!sourceListener) {
return;
}
(static_cast<TVSourceListener*>(sourceListener.get()))->UnregisterSource(this);
}
/* virtual */ JSObject*
TVSource::WrapObject(JSContext* aCx)
{
return TVSourceBinding::Wrap(aCx, this);
}
nsresult
TVSource::SetCurrentChannel(nsITVChannelData* aChannelData)
{
if (!aChannelData) {
return NS_ERROR_INVALID_ARG;
}
nsString newChannelNumber;
nsresult rv = aChannelData->GetNumber(newChannelNumber);
if (NS_FAILED(rv)) {
return rv;
}
if (newChannelNumber.IsEmpty()) {
return NS_ERROR_INVALID_ARG;
}
if (mCurrentChannel) {
nsString currentChannelNumber;
mCurrentChannel->GetNumber(currentChannelNumber);
if (newChannelNumber.Equals(currentChannelNumber)) {
// No actual change.
return NS_OK;
}
}
mCurrentChannel = TVChannel::Create(GetOwner(), this, aChannelData);
NS_ENSURE_TRUE(mCurrentChannel, NS_ERROR_DOM_ABORT_ERR);
return DispatchCurrentChannelChangedEvent(mCurrentChannel);
}
nsresult
TVSource::UnsetCurrentChannel()
{
mCurrentChannel = nullptr;
return DispatchCurrentChannelChangedEvent(mCurrentChannel);
}
void
TVSource::SetIsScanning(bool aIsScanning)
{
mIsScanning = aIsScanning;
}
nsresult
TVSource::DispatchTVEvent(nsIDOMEvent* aEvent)
{
return DispatchTrustedEvent(aEvent);
}
already_AddRefed<Promise>
TVSource::GetChannels(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
MOZ_ASSERT(global);
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
// The operation is prohibited when the source is scanning channels.
if (mIsScanning) {
promise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR);
return promise.forget();
}
nsString tunerId;
mTuner->GetId(tunerId);
nsCOMPtr<nsITVServiceCallback> callback =
new TVServiceChannelGetterCallback(this, promise);
nsresult rv =
mTVService->GetChannels(tunerId, ToTVSourceTypeStr(mType), callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
}
return promise.forget();
}
already_AddRefed<Promise>
TVSource::SetCurrentChannel(const nsAString& aChannelNumber,
ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
MOZ_ASSERT(global);
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
// The operation is prohibited when the source is scanning channels.
if (mIsScanning) {
promise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR);
return promise.forget();
}
nsString tunerId;
mTuner->GetId(tunerId);
nsCOMPtr<nsITVServiceCallback> callback =
new TVServiceChannelSetterCallback(this, promise, aChannelNumber);
nsresult rv =
mTVService->SetChannel(tunerId, ToTVSourceTypeStr(mType), aChannelNumber, callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
}
return promise.forget();
}
already_AddRefed<Promise>
TVSource::StartScanning(const TVStartScanningOptions& aOptions,
ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
MOZ_ASSERT(global);
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsString tunerId;
mTuner->GetId(tunerId);
bool isRescanned = aOptions.mIsRescanned.WasPassed() &&
aOptions.mIsRescanned.Value();
if (isRescanned) {
nsresult rv = mTVService->ClearScannedChannelsCache();
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
return promise.forget();
}
rv = DispatchScanningStateChangedEvent(TVScanningState::Cleared, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
return promise.forget();
}
}
// |SetIsScanning(bool)| should be called once |notifySuccess()| of this
// callback is invoked.
nsCOMPtr<nsITVServiceCallback> callback =
new TVServiceChannelScanCallback(this, promise, true);
nsresult rv =
mTVService->StartScanningChannels(tunerId, ToTVSourceTypeStr(mType), callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
}
return promise.forget();
}
already_AddRefed<Promise>
TVSource::StopScanning(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
MOZ_ASSERT(global);
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsString tunerId;
mTuner->GetId(tunerId);
// |SetIsScanning(bool)| should be called once |notifySuccess()| of this
// callback is invoked.
nsCOMPtr<nsITVServiceCallback> callback =
new TVServiceChannelScanCallback(this, promise, false);
nsresult rv =
mTVService->StopScanningChannels(tunerId, ToTVSourceTypeStr(mType), callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
}
return promise.forget();
}
already_AddRefed<TVTuner>
TVSource::Tuner() const
{
nsRefPtr<TVTuner> tuner = mTuner;
return tuner.forget();
}
TVSourceType
TVSource::Type() const
{
return mType;
}
bool
TVSource::IsScanning() const
{
return mIsScanning;
}
already_AddRefed<TVChannel>
TVSource::GetCurrentChannel() const
{
nsRefPtr<TVChannel> currentChannel = mCurrentChannel;
return currentChannel.forget();
}
nsresult
TVSource::NotifyChannelScanned(nsITVChannelData* aChannelData)
{
nsRefPtr<TVChannel> channel = TVChannel::Create(GetOwner(), this, aChannelData);
NS_ENSURE_TRUE(channel, NS_ERROR_DOM_ABORT_ERR);
return DispatchScanningStateChangedEvent(TVScanningState::Scanned, channel);
}
nsresult
TVSource::NotifyChannelScanComplete()
{
SetIsScanning(false);
return DispatchScanningStateChangedEvent(TVScanningState::Completed, nullptr);
}
nsresult
TVSource::NotifyChannelScanStopped()
{
SetIsScanning(false);
return DispatchScanningStateChangedEvent(TVScanningState::Stopped, nullptr);
}
nsresult
TVSource::NotifyEITBroadcasted(nsITVChannelData* aChannelData,
nsITVProgramData** aProgramDataList,
uint32_t aCount)
{
nsRefPtr<TVChannel> channel = TVChannel::Create(GetOwner(), this, aChannelData);
Sequence<OwningNonNull<TVProgram>> programs;
for (uint32_t i = 0; i < aCount; i++) {
nsRefPtr<TVProgram> program =
new TVProgram(GetOwner(), channel, aProgramDataList[i]);
*programs.AppendElement() = program;
}
return DispatchEITBroadcastedEvent(programs);
}
nsresult
TVSource::DispatchCurrentChannelChangedEvent(TVChannel* aChannel)
{
TVCurrentChannelChangedEventInit init;
init.mChannel = aChannel;
nsCOMPtr<nsIDOMEvent> event =
TVCurrentChannelChangedEvent::Constructor(this,
NS_LITERAL_STRING("currentchannelchanged"),
init);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethodWithArg<nsCOMPtr<nsIDOMEvent>>(this,
&TVSource::DispatchTVEvent,
event);
return NS_DispatchToCurrentThread(runnable);
}
nsresult
TVSource::DispatchScanningStateChangedEvent(TVScanningState aState,
TVChannel* aChannel)
{
TVScanningStateChangedEventInit init;
init.mState = aState;
init.mChannel = aChannel;
nsCOMPtr<nsIDOMEvent> event =
TVScanningStateChangedEvent::Constructor(this,
NS_LITERAL_STRING("scanningstatechanged"),
init);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethodWithArg<nsCOMPtr<nsIDOMEvent>>(this,
&TVSource::DispatchTVEvent,
event);
return NS_DispatchToCurrentThread(runnable);
}
nsresult
TVSource::DispatchEITBroadcastedEvent(const Sequence<OwningNonNull<TVProgram>>& aPrograms)
{
TVEITBroadcastedEventInit init;
init.mPrograms = aPrograms;
nsCOMPtr<nsIDOMEvent> event =
TVEITBroadcastedEvent::Constructor(this,
NS_LITERAL_STRING("eitbroadcasted"),
init);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethodWithArg<nsCOMPtr<nsIDOMEvent>>(this,
&TVSource::DispatchTVEvent,
event);
return NS_DispatchToCurrentThread(runnable);
}
} // namespace dom
} // namespace mozilla