1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webspeech/synth/SpeechSynthesis.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,259 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nsSpeechTask.h"
1.11 +#include "prlog.h"
1.12 +
1.13 +#include "mozilla/dom/ContentChild.h"
1.14 +#include "mozilla/dom/Element.h"
1.15 +
1.16 +#include "mozilla/dom/SpeechSynthesisBinding.h"
1.17 +#include "SpeechSynthesis.h"
1.18 +#include "nsSynthVoiceRegistry.h"
1.19 +#include "nsIDocument.h"
1.20 +
1.21 +#undef LOG
1.22 +#ifdef PR_LOGGING
1.23 +PRLogModuleInfo*
1.24 +GetSpeechSynthLog()
1.25 +{
1.26 + static PRLogModuleInfo* sLog = nullptr;
1.27 +
1.28 + if (!sLog) {
1.29 + sLog = PR_NewLogModule("SpeechSynthesis");
1.30 + }
1.31 +
1.32 + return sLog;
1.33 +}
1.34 +#define LOG(type, msg) PR_LOG(GetSpeechSynthLog(), type, msg)
1.35 +#else
1.36 +#define LOG(type, msg)
1.37 +#endif
1.38 +
1.39 +namespace mozilla {
1.40 +namespace dom {
1.41 +
1.42 +static PLDHashOperator
1.43 +TraverseCachedVoices(const nsAString& aKey, SpeechSynthesisVoice* aEntry, void* aData)
1.44 +{
1.45 + nsCycleCollectionTraversalCallback* cb = static_cast<nsCycleCollectionTraversalCallback*>(aData);
1.46 + cb->NoteXPCOMChild(aEntry);
1.47 + return PL_DHASH_NEXT;
1.48 +}
1.49 +
1.50 +NS_IMPL_CYCLE_COLLECTION_CLASS(SpeechSynthesis)
1.51 +
1.52 +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(SpeechSynthesis)
1.53 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mParent)
1.54 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mCurrentTask)
1.55 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mSpeechQueue)
1.56 + NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
1.57 + tmp->mVoiceCache.Clear();
1.58 +NS_IMPL_CYCLE_COLLECTION_UNLINK_END
1.59 +
1.60 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(SpeechSynthesis)
1.61 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
1.62 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCurrentTask)
1.63 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSpeechQueue)
1.64 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
1.65 + tmp->mVoiceCache.EnumerateRead(TraverseCachedVoices, &cb);
1.66 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
1.67 +
1.68 +NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(SpeechSynthesis)
1.69 + NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
1.70 +NS_IMPL_CYCLE_COLLECTION_TRACE_END
1.71 +
1.72 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SpeechSynthesis)
1.73 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.74 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.75 +NS_INTERFACE_MAP_END
1.76 +
1.77 +NS_IMPL_CYCLE_COLLECTING_ADDREF(SpeechSynthesis)
1.78 +NS_IMPL_CYCLE_COLLECTING_RELEASE(SpeechSynthesis)
1.79 +
1.80 +SpeechSynthesis::SpeechSynthesis(nsPIDOMWindow* aParent)
1.81 + : mParent(aParent)
1.82 +{
1.83 + SetIsDOMBinding();
1.84 +}
1.85 +
1.86 +SpeechSynthesis::~SpeechSynthesis()
1.87 +{
1.88 +}
1.89 +
1.90 +JSObject*
1.91 +SpeechSynthesis::WrapObject(JSContext* aCx)
1.92 +{
1.93 + return SpeechSynthesisBinding::Wrap(aCx, this);
1.94 +}
1.95 +
1.96 +nsIDOMWindow*
1.97 +SpeechSynthesis::GetParentObject() const
1.98 +{
1.99 + return mParent;
1.100 +}
1.101 +
1.102 +bool
1.103 +SpeechSynthesis::Pending() const
1.104 +{
1.105 + switch (mSpeechQueue.Length()) {
1.106 + case 0:
1.107 + return false;
1.108 +
1.109 + case 1:
1.110 + return mSpeechQueue.ElementAt(0)->GetState() == SpeechSynthesisUtterance::STATE_PENDING;
1.111 +
1.112 + default:
1.113 + return true;
1.114 + }
1.115 +}
1.116 +
1.117 +bool
1.118 +SpeechSynthesis::Speaking() const
1.119 +{
1.120 + if (mSpeechQueue.IsEmpty()) {
1.121 + return false;
1.122 + }
1.123 +
1.124 + return mSpeechQueue.ElementAt(0)->GetState() == SpeechSynthesisUtterance::STATE_SPEAKING;
1.125 +}
1.126 +
1.127 +bool
1.128 +SpeechSynthesis::Paused() const
1.129 +{
1.130 + if (mSpeechQueue.IsEmpty()) {
1.131 + return false;
1.132 + }
1.133 +
1.134 + return mSpeechQueue.ElementAt(0)->IsPaused();
1.135 +}
1.136 +
1.137 +void
1.138 +SpeechSynthesis::Speak(SpeechSynthesisUtterance& aUtterance)
1.139 +{
1.140 + if (aUtterance.mState != SpeechSynthesisUtterance::STATE_NONE) {
1.141 + // XXX: Should probably raise an error
1.142 + return;
1.143 + }
1.144 +
1.145 + mSpeechQueue.AppendElement(&aUtterance);
1.146 + aUtterance.mState = SpeechSynthesisUtterance::STATE_PENDING;
1.147 +
1.148 + if (mSpeechQueue.Length() == 1) {
1.149 + AdvanceQueue();
1.150 + }
1.151 +}
1.152 +
1.153 +void
1.154 +SpeechSynthesis::AdvanceQueue()
1.155 +{
1.156 + LOG(PR_LOG_DEBUG,
1.157 + ("SpeechSynthesis::AdvanceQueue length=%d", mSpeechQueue.Length()));
1.158 +
1.159 + if (mSpeechQueue.IsEmpty()) {
1.160 + return;
1.161 + }
1.162 +
1.163 + nsRefPtr<SpeechSynthesisUtterance> utterance = mSpeechQueue.ElementAt(0);
1.164 +
1.165 + nsAutoString docLang;
1.166 + nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(mParent);
1.167 + nsIDocument* doc = win->GetExtantDoc();
1.168 +
1.169 + if (doc) {
1.170 + Element* elm = doc->GetHtmlElement();
1.171 +
1.172 + if (elm) {
1.173 + elm->GetLang(docLang);
1.174 + }
1.175 + }
1.176 +
1.177 + mCurrentTask =
1.178 + nsSynthVoiceRegistry::GetInstance()->SpeakUtterance(*utterance, docLang);
1.179 +
1.180 + if (mCurrentTask) {
1.181 + mCurrentTask->SetSpeechSynthesis(this);
1.182 + }
1.183 +
1.184 + return;
1.185 +}
1.186 +
1.187 +void
1.188 +SpeechSynthesis::Cancel()
1.189 +{
1.190 + mSpeechQueue.Clear();
1.191 +
1.192 + if (mCurrentTask) {
1.193 + mCurrentTask->Cancel();
1.194 + }
1.195 +}
1.196 +
1.197 +void
1.198 +SpeechSynthesis::Pause()
1.199 +{
1.200 + if (mCurrentTask) {
1.201 + mCurrentTask->Pause();
1.202 + }
1.203 +}
1.204 +
1.205 +void
1.206 +SpeechSynthesis::Resume()
1.207 +{
1.208 + if (mCurrentTask) {
1.209 + mCurrentTask->Resume();
1.210 + }
1.211 +}
1.212 +
1.213 +void
1.214 +SpeechSynthesis::OnEnd(const nsSpeechTask* aTask)
1.215 +{
1.216 + MOZ_ASSERT(mCurrentTask == aTask);
1.217 +
1.218 + if (!mSpeechQueue.IsEmpty()) {
1.219 + mSpeechQueue.RemoveElementAt(0);
1.220 + }
1.221 +
1.222 + mCurrentTask = nullptr;
1.223 + AdvanceQueue();
1.224 +}
1.225 +
1.226 +void
1.227 +SpeechSynthesis::GetVoices(nsTArray< nsRefPtr<SpeechSynthesisVoice> >& aResult)
1.228 +{
1.229 + aResult.Clear();
1.230 + uint32_t voiceCount = 0;
1.231 +
1.232 + nsresult rv = nsSynthVoiceRegistry::GetInstance()->GetVoiceCount(&voiceCount);
1.233 + NS_ENSURE_SUCCESS_VOID(rv);
1.234 +
1.235 + for (uint32_t i = 0; i < voiceCount; i++) {
1.236 + nsAutoString uri;
1.237 + rv = nsSynthVoiceRegistry::GetInstance()->GetVoice(i, uri);
1.238 +
1.239 + if (NS_FAILED(rv)) {
1.240 + NS_WARNING("Failed to retrieve voice from registry");
1.241 + continue;
1.242 + }
1.243 +
1.244 + SpeechSynthesisVoice* voice = mVoiceCache.GetWeak(uri);
1.245 +
1.246 + if (!voice) {
1.247 + voice = new SpeechSynthesisVoice(this, uri);
1.248 + }
1.249 +
1.250 + aResult.AppendElement(voice);
1.251 + }
1.252 +
1.253 + mVoiceCache.Clear();
1.254 +
1.255 + for (uint32_t i = 0; i < aResult.Length(); i++) {
1.256 + SpeechSynthesisVoice* voice = aResult[i];
1.257 + mVoiceCache.Put(voice->mUri, voice);
1.258 + }
1.259 +}
1.260 +
1.261 +} // namespace dom
1.262 +} // namespace mozilla
