Bug 1105209 - Add media resource request API. r=kentuckyfriedtakahe

dom/media/MediaDecoderStateMachine.cpp

@@ -2734,6 +2734,12 @@ MediaDecoderStateMachine::FlushDecoding()
     DecodeTaskQueue()->FlushAndDispatch(task);
   }
 
+  // These flags will be reset when the decoded data returned in OnAudioDecoded()
+  // and OnVideoDecoded(). Because the decode tasks are flushed, these flags need
+  // to be reset here.
+  mAudioRequestPending = false;
+  mVideoRequestPending = false;
+
   // We must reset playback so that all references to frames queued
   // in the state machine are dropped, else subsequent calls to Shutdown()
   // or ReleaseMediaResources() can fail on B2G.

dom/media/fmp4/MP4Reader.cpp

@@ -204,6 +204,14 @@ private:
 };
 #endif
 
+void MP4Reader::RequestCodecResource() {
+#ifdef MOZ_GONK_MEDIACODEC
+  if(mVideo.mDecoder) {
+    mVideo.mDecoder->AllocateMediaResources();
+  }
+#endif
+}
+
 bool MP4Reader::IsWaitingOnCodecResource() {
 #ifdef MOZ_GONK_MEDIACODEC
   return mVideo.mDecoder && mVideo.mDecoder->IsWaitingMediaResources();
@@ -273,6 +281,14 @@ MP4Reader::IsSupportedVideoMimeType(const char* aMimeType)
          mPlatform->SupportsVideoMimeType(aMimeType);
 }
 
+void
+MP4Reader::PreReadMetadata()
+{
+  if (mPlatform) {
+    RequestCodecResource();
+  }
+}
+
 nsresult
 MP4Reader::ReadMetadata(MediaInfo* aInfo,
                         MetadataTags** aTags)
@@ -729,6 +745,7 @@ MP4Reader::Flush(TrackType aTrack)
       data.RejectPromise(CANCELED, __func__);
     }
     data.mDiscontinuity = true;
+    data.mUpdateScheduled = false;
   }
   if (aTrack == kVideo) {
     mQueuedVideoSample = nullptr;

dom/media/fmp4/MP4Reader.h

@@ -45,6 +45,11 @@ public:
   virtual bool HasAudio() MOZ_OVERRIDE;
   virtual bool HasVideo() MOZ_OVERRIDE;
 
+  // PreReadMetadata() is called by MediaDecoderStateMachine::DecodeMetadata()
+  // before checking hardware resource. In Gonk, it requests hardware codec so
+  // MediaDecoderStateMachine could go to DORMANT state if the hardware codec is
+  // not available.
+  virtual void PreReadMetadata() MOZ_OVERRIDE;
   virtual nsresult ReadMetadata(MediaInfo* aInfo,
                                 MetadataTags** aTags) MOZ_OVERRIDE;
 
@@ -107,6 +112,7 @@ private:
   bool IsSupportedAudioMimeType(const char* aMimeType);
   bool IsSupportedVideoMimeType(const char* aMimeType);
   void NotifyResourcesStatusChanged();
+  void RequestCodecResource();
   bool IsWaitingOnCodecResource();
   virtual bool IsWaitingOnCDMResource() MOZ_OVERRIDE;
 

dom/media/fmp4/PlatformDecoderModule.h

@@ -231,6 +231,7 @@ public:
   virtual bool IsDormantNeeded() {
     return false;
   };
+  virtual void AllocateMediaResources() {}
   virtual void ReleaseMediaResources() {}
   virtual void ReleaseDecoder() {}
 };

dom/media/fmp4/gonk/GonkMediaDataDecoder.cpp

@@ -164,6 +164,12 @@ GonkMediaDataDecoder::IsDormantNeeded() {
   return mDecoder.get() ? true : false;
 }
 
+void
+GonkMediaDataDecoder::AllocateMediaResources()
+{
+  mManager->AllocateMediaResources();
+}
+
 void
 GonkMediaDataDecoder::ReleaseMediaResources() {
   mManager->ReleaseMediaResources();

dom/media/fmp4/gonk/GonkMediaDataDecoder.h

@@ -35,6 +35,8 @@ public:
                           nsRefPtr<MediaData>& aOutput) = 0;
   virtual nsresult Flush() = 0;
 
+  virtual void AllocateMediaResources() {};
+
   virtual void ReleaseMediaResources() {};
 };
 
@@ -65,6 +67,8 @@ public:
 
   virtual bool IsDormantNeeded() MOZ_OVERRIDE;
 
+  virtual void AllocateMediaResources() MOZ_OVERRIDE;
+
   virtual void ReleaseMediaResources() MOZ_OVERRIDE;
 
 private:

dom/media/fmp4/gonk/GonkVideoDecoderManager.cpp

@@ -474,6 +474,12 @@ GonkVideoDecoderManager::Flush()
   return NS_OK;
 }
 
+void
+GonkVideoDecoderManager::AllocateMediaResources()
+{
+  mDecoder->RequestMediaResources();
+}
+
 void
 GonkVideoDecoderManager::codecReserved()
 {

dom/media/fmp4/gonk/GonkVideoDecoderManager.h

@@ -52,6 +52,8 @@ public:
 
   virtual nsresult Flush() MOZ_OVERRIDE;
 
+  virtual void AllocateMediaResources();
+
   virtual void ReleaseMediaResources();
 
   static void RecycleCallback(TextureClient* aClient, void* aClosure);

dom/media/omx/MediaCodecProxy.cpp

@@ -135,6 +135,12 @@ MediaCodecProxy::requestResource()
   return true;
 }
 
+void
+MediaCodecProxy::RequestMediaResources()
+{
+  requestResource();
+}
+
 void
 MediaCodecProxy::cancelResource()
 {
@@ -572,7 +578,6 @@ status_t MediaCodecProxy::Output(MediaBuffer** aBuffer, int64_t aTimeoutUs)
   status_t err = dequeueOutputBuffer(&index, &offset, &size,
                                       &timeUs, &flags, aTimeoutUs);
   if (err != OK) {
-    ALOG("Output returned %d", err);
     return err;
   }
 
@@ -598,9 +603,10 @@ status_t MediaCodecProxy::Output(MediaBuffer** aBuffer, int64_t aTimeoutUs)
 
 bool MediaCodecProxy::IsWaitingResources()
 {
-  // Write Lock for mCodec
-  RWLock::AutoWLock awl(mCodecLock);
-  return mCodec == nullptr;
+  if (mResourceHandler.get()) {
+    return mResourceHandler->IsWaitingResource();
+  }
+  return false;
 }
 
 bool MediaCodecProxy::IsDormantNeeded()

dom/media/omx/MediaCodecProxy.h

@@ -131,6 +131,7 @@ public:
   bool Prepare();
   bool IsWaitingResources();
   bool IsDormantNeeded();
+  void RequestMediaResources();
   void ReleaseMediaResources();
   // This updates mOutputBuffer when receiving INFO_OUTPUT_BUFFERS_CHANGED event.
   bool UpdateOutputBuffers();

dom/media/omx/mediaresourcemanager/MediaResourceHandler.cpp

@@ -5,15 +5,14 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "MediaResourceHandler.h"
-
 #include "mozilla/NullPtr.h"
 
 namespace android {
 
 MediaResourceHandler::MediaResourceHandler(const wp<ResourceListener> &aListener)
   : mListener(aListener)
-  , mState(MediaResourceManagerClient::CLIENT_STATE_WAIT_FOR_RESOURCE)
   , mType(IMediaResourceManagerService::INVALID_RESOURCE_TYPE)
+  , mWaitingResource(false)
 {
 }
 
@@ -22,6 +21,13 @@ MediaResourceHandler::~MediaResourceHandler()
   cancelResource();
 }
 
+bool
+MediaResourceHandler::IsWaitingResource()
+{
+  Mutex::Autolock al(mLock);
+  return mWaitingResource;
+}
+
 bool
 MediaResourceHandler::requestResource(IMediaResourceManagerService::ResourceType aType)
 {
@@ -45,6 +51,7 @@ MediaResourceHandler::requestResource(IMediaResourceManagerService::ResourceType
   mClient = client;
   mService = service;
   mType = aType;
+  mWaitingResource = true;
 
   return true;
 }
@@ -58,6 +65,7 @@ MediaResourceHandler::cancelResource()
     mService->cancelClient(mClient, (int)mType);
   }
 
+  mWaitingResource = false;
   mClient = nullptr;
   mService = nullptr;
 }
@@ -70,19 +78,15 @@ MediaResourceHandler::statusChanged(int aEvent)
 
   Mutex::Autolock autoLock(mLock);
 
-  MediaResourceManagerClient::State state = (MediaResourceManagerClient::State)aEvent;
-  if (state == mState) {
-    return;
-  }
-
-  mState = state;
-
   listener = mListener.promote();
   if (listener == nullptr) {
     return;
   }
 
-  if (mState == MediaResourceManagerClient::CLIENT_STATE_RESOURCE_ASSIGNED) {
+  mWaitingResource = false;
+
+  MediaResourceManagerClient::State state = (MediaResourceManagerClient::State)aEvent;
+  if (state == MediaResourceManagerClient::CLIENT_STATE_RESOURCE_ASSIGNED) {
     listener->resourceReserved();
   } else {
     listener->resourceCanceled();

dom/media/omx/mediaresourcemanager/MediaResourceHandler.h

@@ -42,6 +42,8 @@ public:
   // Cancel Resource
   void cancelResource();
 
+  bool IsWaitingResource();
+
 protected:
   // MediaResourceManagerClient::EventListener::statusChanged()
   virtual void statusChanged(int event);
@@ -57,10 +59,11 @@ private:
 
   // Resource Management
   Mutex mLock;
-  MediaResourceManagerClient::State mState;
   sp<IMediaResourceManagerClient> mClient;
   sp<IMediaResourceManagerService> mService;
   IMediaResourceManagerService::ResourceType mType;
+
+  bool mWaitingResource;
 };
 
 } // namespace android