[sailfishos][media] Add NemoResourceHandler

Original SHA1: b318b3c Signed-off-by: Raine Makelainen <raine.makelainen@jolla.com>
sailfishos · May 27, 2020 · 9e2dc6c · 9e2dc6c
1 parent f26d0a5
commit 9e2dc6c
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diff --git a/dom/media/NemoResourceHandler.cpp b/dom/media/NemoResourceHandler.cpp
@@ -0,0 +1,116 @@
+/* -*- 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 "NemoResourceHandler.h"
+
+#include "nsThreadUtils.h"
+#include "mozilla/Services.h"
+#include "nsIObserverService.h"
+#include "nsStringGlue.h"
+#include "mozilla/Preferences.h"
+
+namespace mozilla {
+
+NemoResourceHandler* NemoResourceHandler::mGlobalHandler = nullptr;
+
+void
+NemoResourceHandler::AquireResources(void* aHolder)
+{
+    MOZ_ASSERT(NS_IsMainThread());
+    nsCOMPtr<nsIObserverService> obs =
+        mozilla::services::GetObserverService();
+    if (obs) {
+        nsString data;
+        data.AppendPrintf("{ \"owner\" : \"%p\", \"state\": \"play\" }", aHolder);
+        obs->NotifyObservers(nullptr, "media-decoder-info", data.get());
+    }
+
+    if (Preferences::GetBool("media.resource_handler_disabled", false) == true) {
+        return;
+    }
+
+    if (mGlobalHandler == nullptr)
+    {
+        mGlobalHandler = new NemoResourceHandler();
+    }
+    mGlobalHandler->Aquire();
+}
+
+void
+NemoResourceHandler::ReleaseResources(void* aHolder)
+{
+    MOZ_ASSERT(NS_IsMainThread());
+    nsCOMPtr<nsIObserverService> obs =
+        mozilla::services::GetObserverService();
+    if (obs) {
+        nsString data;
+        data.AppendPrintf("{ \"owner\" : \"%p\", \"state\": \"pause\" }", aHolder);
+        obs->NotifyObservers(nullptr, "media-decoder-info", data.get());
+    }
+
+    if (Preferences::GetBool("media.resource_handler_disabled", false) == true) {
+        return;
+    }
+
+    if (!mGlobalHandler) {
+        return;
+    }
+
+    mGlobalHandler->Release();
+
+    if (mGlobalHandler->CanDestroy())
+    {
+        delete mGlobalHandler;
+        mGlobalHandler = nullptr;
+    }
+}
+
+void
+NemoResourceHandler::MediaInfo(void* aHolder, bool aHasAudio, bool aHasVideo)
+{
+    MOZ_ASSERT(NS_IsMainThread());
+    nsCOMPtr<nsIObserverService> obs =
+        mozilla::services::GetObserverService();
+    if (obs) {
+        nsString data;
+        data.AppendPrintf("{ \"owner\" : \"%p\", \"state\": \"meta\", \"a\" : %i, \"v\" : %i }", aHolder, aHasAudio, aHasVideo);
+        obs->NotifyObservers(nullptr, "media-decoder-info", data.get());
+    }
+}
+
+void
+NemoResourceHandler::Aquire()
+{
+    mCounter++;
+}
+
+void
+NemoResourceHandler::Release()
+{
+    mCounter--;
+}
+
+bool
+NemoResourceHandler::CanDestroy()
+{
+    return mCounter <= 0;
+}
+
+NemoResourceHandler::NemoResourceHandler()
+  : mCounter(0)
+{
+    MOZ_ASSERT(mGlobalHandler == nullptr);
+    mGlobalHandler = this;
+}
+
+NemoResourceHandler::~NemoResourceHandler()
+{
+    MOZ_ASSERT(mGlobalHandler != nullptr);
+    mGlobalHandler = nullptr;
+}
+
+} // namespace mozilla
+
diff --git a/dom/media/NemoResourceHandler.h b/dom/media/NemoResourceHandler.h
@@ -0,0 +1,31 @@
+/* -*- 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/. */
+
+#ifndef NEMO_RESOURCE_HANDLER
+#define NEMO_RESOURCE_HANDLER
+
+namespace mozilla {
+
+class NemoResourceHandler
+{
+public:
+    static void AquireResources(void* aHolder);
+    static void ReleaseResources(void* aHolder);
+    static void MediaInfo(void* aHolder, bool aHasAudio, bool aHasVideo);
+private:
+    NemoResourceHandler();
+    virtual ~NemoResourceHandler();
+    void Aquire();
+    void Release();
+    bool CanDestroy();
+
+    static NemoResourceHandler* mGlobalHandler;
+    int mCounter;
+};
+
+} // namespace mozilla
+
+#endif // NEMO_RESOURCE_HANDLER
diff --git a/dom/media/moz.build b/dom/media/moz.build
@@ -267,6 +267,9 @@ UNIFIED_SOURCES += [
     'XiphExtradata.cpp',
 ]
 
+SOURCES += [
+    'NemoResourceHandler.cpp',
+]
 if CONFIG['OS_TARGET'] == 'WINNT':
   SOURCES += [ 'ThreadPoolCOMListener.cpp' ]