Implement core of compliant MediaSource coded frame processing

media/filters/frame_processor_base.cc

Index: media/filters/frame_processor_base.cc
diff --git a/media/filters/frame_processor_base.cc b/media/filters/frame_processor_base.cc
index 3e088ed5dc2966926443e23717ddb7086d636a52..130245a970f22f3d5dc4311409ca80bd193763b7 100644
--- a/media/filters/frame_processor_base.cc
+++ b/media/filters/frame_processor_base.cc
@@ -10,7 +10,10 @@
 namespace media {
 
 MseTrackBuffer::MseTrackBuffer(ChunkDemuxerStream* stream)
-    : needs_random_access_point_(true),
+    : last_decode_timestamp_(kNoTimestamp()),
+      last_frame_duration_(kNoTimestamp()),
+      highest_presentation_timestamp_(kNoTimestamp()),
+      needs_random_access_point_(true),
       stream_(stream) {
   DCHECK(stream_);
 }
@@ -22,9 +25,20 @@ MseTrackBuffer::~MseTrackBuffer() {
 void MseTrackBuffer::Reset() {
   DVLOG(2) << __FUNCTION__ << "()";
 
+  last_decode_timestamp_ = kNoTimestamp();
+  last_frame_duration_ = kNoTimestamp();
+  highest_presentation_timestamp_ = kNoTimestamp();
   needs_random_access_point_ = true;
 }
 
+void MseTrackBuffer::SetHighestPresentationTimestampIfIncreased(
+    base::TimeDelta timestamp) {
+  if (highest_presentation_timestamp_ == kNoTimestamp() ||
+      timestamp > highest_presentation_timestamp_) {
+    highest_presentation_timestamp_ = timestamp;
+  }
+}
+
 FrameProcessorBase::FrameProcessorBase()
     : sequence_mode_(false) {}
 
@@ -63,4 +77,14 @@ MseTrackBuffer* FrameProcessorBase::FindTrack(StreamParser::TrackId id) {
   return itr->second;
 }
 
+void FrameProcessorBase::NotifyNewMediaSegmentStarting(
+    base::TimeDelta segment_timestamp) {
+  DVLOG(2) << __FUNCTION__ << "(" << segment_timestamp.InSecondsF() << ")";
+
+  for (TrackBufferMap::iterator itr = track_buffers_.begin();
+       itr != track_buffers_.end(); ++itr) {
+    itr->second->stream()->OnNewMediaSegment(segment_timestamp);
+  }
+}
+
 }  // namespace media