Bug 1299072: P14. Use MediaResult between TrackBuffersManager and MediaSourceDemuxer. r=gerald

MozReview-Commit-ID: 99EopLYqjWh

--HG--
extra : rebase_source : a5c54de401dc0ef3d20b3c35a724666c152d6c0d

dom/media/mediasource/MediaSourceDemuxer.cpp

@@ -379,8 +379,6 @@ MediaSourceTrackDemuxer::BreakCycles()
 RefPtr<MediaSourceTrackDemuxer::SeekPromise>
 MediaSourceTrackDemuxer::DoSeek(media::TimeUnit aTime)
 {
-  typedef TrackBuffersManager::GetSampleResult Result;
-
   TimeIntervals buffered = mManager->Buffered(mType);
   // Fuzz factor represents a +/- threshold. So when seeking it allows the gap
   // to be twice as big as the fuzz value. We only want to allow EOS_FUZZ gap.
@@ -410,12 +408,12 @@ MediaSourceTrackDemuxer::DoSeek(media::TimeUnit aTime)
     seekTime = buffered[index].mStart;
   }
   seekTime = mManager->Seek(mType, seekTime, MediaSourceDemuxer::EOS_FUZZ);
-  Result result;
+  MediaResult result = NS_OK;
   RefPtr<MediaRawData> sample =
     mManager->GetSample(mType,
                         media::TimeUnit(),
                         result);
-  MOZ_ASSERT(result != Result::ERROR && sample);
+  MOZ_ASSERT(NS_SUCCEEDED(result) && sample);
   mNextSample = Some(sample);
   mReset = false;
   {
@@ -429,8 +427,6 @@ MediaSourceTrackDemuxer::DoSeek(media::TimeUnit aTime)
 RefPtr<MediaSourceTrackDemuxer::SamplesPromise>
 MediaSourceTrackDemuxer::DoGetSamples(int32_t aNumSamples)
 {
-  typedef TrackBuffersManager::GetSampleResult Result;
-
   if (mReset) {
     // If a seek (or reset) was recently performed, we ensure that the data
     // we are about to retrieve is still available.
@@ -452,16 +448,17 @@ MediaSourceTrackDemuxer::DoGetSamples(int32_t aNumSamples)
     sample = mNextSample.ref();
     mNextSample.reset();
   } else {
-    Result result;
+    MediaResult result = NS_OK;
     sample = mManager->GetSample(mType, MediaSourceDemuxer::EOS_FUZZ, result);
     if (!sample) {
-      if (result == Result::ERROR) {
-        return SamplesPromise::CreateAndReject(NS_ERROR_DOM_MEDIA_DEMUXER_ERR, __func__);
+      if (result == NS_ERROR_DOM_MEDIA_END_OF_STREAM ||
+          result == NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA) {
+        return SamplesPromise::CreateAndReject(
+          (result == NS_ERROR_DOM_MEDIA_END_OF_STREAM && mManager->IsEnded())
+          ? NS_ERROR_DOM_MEDIA_END_OF_STREAM
+          : NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA, __func__);
       }
-      return SamplesPromise::CreateAndReject(
-        (result == Result::EOS && mManager->IsEnded())
-        ? NS_ERROR_DOM_MEDIA_END_OF_STREAM
-        : NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA, __func__);
+      return SamplesPromise::CreateAndReject(result, __func__);
     }
   }
   RefPtr<SamplesHolder> samples = new SamplesHolder;

dom/media/mediasource/TrackBuffersManager.cpp

@@ -2150,16 +2150,16 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
 already_AddRefed<MediaRawData>
 TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
                                const TimeUnit& aFuzz,
-                               GetSampleResult& aResult)
+                               MediaResult& aResult)
 {
   MOZ_ASSERT(OnTaskQueue());
   auto& trackData = GetTracksData(aTrack);
   const TrackBuffer& track = GetTrackBuffer(aTrack);
 
-  aResult = GetSampleResult::WAITING_FOR_DATA;
+  aResult = NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA;
 
   if (!track.Length()) {
-    aResult = GetSampleResult::EOS;
+    aResult = NS_ERROR_DOM_MEDIA_END_OF_STREAM;
     return nullptr;
   }
 
@@ -2171,7 +2171,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
 
   if (trackData.mNextGetSampleIndex.isSome()) {
     if (trackData.mNextGetSampleIndex.ref() >= track.Length()) {
-      aResult = GetSampleResult::EOS;
+      aResult = NS_ERROR_DOM_MEDIA_END_OF_STREAM;
       return nullptr;
     }
     const MediaRawData* sample =
@@ -2186,7 +2186,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
 
     RefPtr<MediaRawData> p = sample->Clone();
     if (!p) {
-      aResult = GetSampleResult::ERROR;
+      aResult = MediaResult(NS_ERROR_OUT_OF_MEMORY, __func__);
       return nullptr;
     }
     trackData.mNextGetSampleIndex.ref()++;
@@ -2212,7 +2212,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
       trackData.mNextSampleTimecode = nextSampleTimecode;
       trackData.mNextSampleTime = nextSampleTime;
     }
-    aResult = GetSampleResult::NO_ERROR;
+    aResult = NS_OK;
     return p.forget();
   }
 
@@ -2220,7 +2220,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
       track.LastElement()->mTimecode + track.LastElement()->mDuration) {
     // The next element is past our last sample. We're done.
     trackData.mNextGetSampleIndex = Some(uint32_t(track.Length()));
-    aResult = GetSampleResult::EOS;
+    aResult = NS_ERROR_DOM_MEDIA_END_OF_STREAM;
     return nullptr;
   }
 
@@ -2237,7 +2237,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
   RefPtr<MediaRawData> p = sample->Clone();
   if (!p) {
     // OOM
-    aResult = GetSampleResult::ERROR;
+    aResult = MediaResult(NS_ERROR_OUT_OF_MEMORY, __func__);
     return nullptr;
   }
   trackData.mNextGetSampleIndex = Some(uint32_t(pos)+1);
@@ -2245,7 +2245,7 @@ TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack,
     TimeUnit::FromMicroseconds(sample->mTimecode + sample->mDuration);
   trackData.mNextSampleTime =
     TimeUnit::FromMicroseconds(sample->GetEndTime());
-  aResult = GetSampleResult::NO_ERROR;
+  aResult = NS_OK;
   return p.forget();
 }
 

dom/media/mediasource/TrackBuffersManager.h

@@ -155,17 +155,9 @@ public:
                                        const media::TimeUnit& aFuzz,
                                        bool& aFound);
 
-  enum class GetSampleResult
-  {
-    NO_ERROR,
-    ERROR,
-    WAITING_FOR_DATA,
-    EOS
-  };
-
   already_AddRefed<MediaRawData> GetSample(TrackInfo::TrackType aTrack,
                                            const media::TimeUnit& aFuzz,
-                                           GetSampleResult& aResult);
+                                           MediaResult& aResult);
   int32_t FindCurrentPosition(TrackInfo::TrackType aTrack,
                               const media::TimeUnit& aFuzz);
   media::TimeUnit GetNextRandomAccessPoint(TrackInfo::TrackType aTrack,