Cast: Only ACK decodable frames

media/cast/framer/frame_id_map.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cast/framer/frame_id_map.h"
 
 #include "base/logging.h"
 #include "media/cast/rtp_receiver/rtp_receiver_defines.h"
 
 namespace media {
@@ skipping 119 matching lines @@
 
   for (it = frame_map_.begin(); it != frame_map_.end(); ++it) {
     if (it->second->Complete() && ContinuousFrame(it->second.get())) {
       *frame_id = it->first;
       return true;
     }
   }
   return false;
 }
 
+bool FrameIdMap::HaveMultipleDecodableFrames() const {
+  // Find the oldest decodable frame.
+  FrameMap::const_iterator it;
+  bool found_one = false;
+  for (it = frame_map_.begin(); it != frame_map_.end(); ++it) {
+    if (it->second->Complete() && DecodableVideoFrame(it->second.get())) {
+      if (found_one) {
+        return true;
+      } else {
+        found_one = true;
+      }
+    }
+  }
+  return false;
+}
+
 uint32 FrameIdMap::LastContinuousFrame() const {
   uint32 last_continuous_frame_id = last_released_frame_;
   uint32 next_expected_frame = last_released_frame_;
 
   FrameMap::const_iterator it;
 
   do {
     next_expected_frame++;
     it = frame_map_.find(next_expected_frame);
     if (it == frame_map_.end())
@@ skipping 96 matching lines @@
   // Current frame is not necessarily referencing the last frame.
   // Do we have the reference frame?
   if (IsOlderFrameId(frame->referenced_frame_id(), last_released_frame_)) {
     return true;
   }
   return frame->referenced_frame_id() == last_released_frame_;
 }
 
 }  //  namespace cast
 }  //  namespace media