Extract coded frame processing from SourceState into LegacyFrameProcessor

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
new file mode 100644
index 0000000000000000000000000000000000000000..34db474bfe2d3fca90bd01b0a6afb2c4f900ece8
--- /dev/null
+++ b/media/filters/frame_processor_base.cc
@@ -0,0 +1,70 @@
+// Copyright 2014 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/filters/frame_processor_base.h"
+
+#include "base/stl_util.h"
+#include "media/base/buffers.h"
+
+namespace media {
+
+MseTrackBuffer::MseTrackBuffer(ChunkDemuxerStream* stream)
+    : needs_random_access_point_(true),
+      stream_(stream) {
+  DCHECK(stream_);
+}
+
+MseTrackBuffer::~MseTrackBuffer() {
+  DVLOG(2) << __FUNCTION__ << "()";
+}
+
+void MseTrackBuffer::Reset() {
+  DVLOG(2) << __FUNCTION__ << "()";
+
+  needs_random_access_point_ = true;
+}
+
+FrameProcessorBase::FrameProcessorBase(
+    const IncreaseDurationCB& increase_duration_cb)
+    : sequence_mode_(false),
+      increase_duration_cb_(increase_duration_cb) {
+  DCHECK(!increase_duration_cb_.is_null());
+}
+
+FrameProcessorBase::~FrameProcessorBase() {
+  DVLOG(2) << __FUNCTION__ << "()";
+
+  STLDeleteValues(&track_buffers_);
+}
+
+bool FrameProcessorBase::AddTrack(StreamParser::TrackId id,
+                                  ChunkDemuxerStream* stream) {
+  DVLOG(2) << __FUNCTION__ << "(): id=" << id;
+
+  MseTrackBuffer* existing_track = FindTrack(id);
+  DCHECK(!existing_track);
+  if (existing_track)
+    return false;
+
+  track_buffers_[id] = new MseTrackBuffer(stream);
+  return true;
+}
+
+void FrameProcessorBase::Reset() {
+  DVLOG(2) << __FUNCTION__ << "()";
+  for (TrackBufferMap::iterator itr = track_buffers_.begin();
+       itr != track_buffers_.end(); ++itr) {
+    itr->second->Reset();
+  }
+}
+
+MseTrackBuffer* FrameProcessorBase::FindTrack(StreamParser::TrackId id) {
+  TrackBufferMap::iterator itr = track_buffers_.find(id);
+  if (itr == track_buffers_.end())
+    return NULL;
+
+  return itr->second;
+}
+
+}  // namespace media