import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/platforms/apple/AppleDecoderModule.cpp

@@ -0,0 +1,113 @@
+/* -*- 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 "AppleATDecoder.h"
+#include "AppleCMLinker.h"
+#include "AppleDecoderModule.h"
+#include "AppleVTDecoder.h"
+#include "AppleVTLinker.h"
+#include "MacIOSurfaceImage.h"
+#include "MediaPrefs.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Logging.h"
+#include "mozilla/gfx/gfxVars.h"
+
+namespace mozilla {
+
+bool AppleDecoderModule::sInitialized = false;
+bool AppleDecoderModule::sIsCoreMediaAvailable = false;
+bool AppleDecoderModule::sIsVTAvailable = false;
+bool AppleDecoderModule::sIsVTHWAvailable = false;
+bool AppleDecoderModule::sCanUseHardwareVideoDecoder = true;
+
+AppleDecoderModule::AppleDecoderModule()
+{
+}
+
+AppleDecoderModule::~AppleDecoderModule()
+{
+}
+
+/* static */
+void
+AppleDecoderModule::Init()
+{
+  if (sInitialized) {
+    return;
+  }
+
+  // Ensure IOSurface framework is loaded.
+  MacIOSurfaceLib::LoadLibrary();
+  const bool loaded = MacIOSurfaceLib::isInit();
+
+  // dlopen CoreMedia.framework if it's available.
+  sIsCoreMediaAvailable = AppleCMLinker::Link();
+  // dlopen VideoToolbox.framework if it's available.
+  // We must link both CM and VideoToolbox framework to allow for proper
+  // paired Link/Unlink calls
+  bool haveVideoToolbox = loaded && AppleVTLinker::Link();
+  sIsVTAvailable = sIsCoreMediaAvailable && haveVideoToolbox;
+
+  sIsVTHWAvailable = AppleVTLinker::skPropEnableHWAccel != nullptr;
+
+  sCanUseHardwareVideoDecoder = loaded &&
+    gfx::gfxVars::CanUseHardwareVideoDecoding();
+
+  sInitialized = true;
+}
+
+nsresult
+AppleDecoderModule::Startup()
+{
+  if (!sInitialized || !sIsVTAvailable) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+already_AddRefed<MediaDataDecoder>
+AppleDecoderModule::CreateVideoDecoder(const CreateDecoderParams& aParams)
+{
+  RefPtr<MediaDataDecoder> decoder =
+    new AppleVTDecoder(aParams.VideoConfig(),
+                       aParams.mTaskQueue,
+                       aParams.mCallback,
+                       aParams.mImageContainer);
+  return decoder.forget();
+}
+
+already_AddRefed<MediaDataDecoder>
+AppleDecoderModule::CreateAudioDecoder(const CreateDecoderParams& aParams)
+{
+  RefPtr<MediaDataDecoder> decoder =
+    new AppleATDecoder(aParams.AudioConfig(),
+                       aParams.mTaskQueue,
+                       aParams.mCallback);
+  return decoder.forget();
+}
+
+bool
+AppleDecoderModule::SupportsMimeType(const nsACString& aMimeType,
+                                     DecoderDoctorDiagnostics* aDiagnostics) const
+{
+  return (sIsCoreMediaAvailable &&
+          (aMimeType.EqualsLiteral("audio/mpeg") ||
+           aMimeType.EqualsLiteral("audio/mp4a-latm"))) ||
+    (sIsVTAvailable && (aMimeType.EqualsLiteral("video/mp4") ||
+                        aMimeType.EqualsLiteral("video/avc")));
+}
+
+PlatformDecoderModule::ConversionRequired
+AppleDecoderModule::DecoderNeedsConversion(const TrackInfo& aConfig) const
+{
+  if (aConfig.IsVideo()) {
+    return ConversionRequired::kNeedAVCC;
+  } else {
+    return ConversionRequired::kNeedNone;
+  }
+}
+
+} // namespace mozilla