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..a4d23819d2c52ba70accbbf3c438b45fe60384ec
--- /dev/null
+++ b/media/filters/frame_processor_base.cc
@@ -0,0 +1,72 @@
+// 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 {
+
+TrackBufferAppendState::TrackBufferAppendState(
+    ChunkDemuxerStream* stream)
+    : needs_random_access_point_(true),
+      stream_(stream) {
+  DCHECK(stream_);
+}
+
+TrackBufferAppendState::~TrackBufferAppendState() {
+  DVLOG(2) << __FUNCTION__ << "()";
+}
+
+void TrackBufferAppendState::Reset() {
+  DVLOG(2) << __FUNCTION__ << "()";
+
+  needs_random_access_point_ = true;
+}
+
+FrameProcessorBase::FrameProcessorBase(
+    const IncreaseDurationCB& increase_duration_cb)
+    : sequence_mode_(false),
+      append_window_end_(kInfiniteDuration()),
+      increase_duration_cb_(increase_duration_cb) {
+  DCHECK(!increase_duration_cb_.is_null());
+}
+
+FrameProcessorBase::~FrameProcessorBase() {
+  DVLOG(2) << __FUNCTION__ << "()";
+
+  STLDeleteValues(&tracks_);
+}
+
+bool FrameProcessorBase::AddTrack(StreamParser::TrackId id,
+                                  ChunkDemuxerStream* stream) {
+  DVLOG(2) << __FUNCTION__ << "(): id=" << id;
+
+  if (FindTrack(id)) {
+    DVLOG(2) << "Matching track was previously added, id=" << id;
+    return false;
+  }
+
+  tracks_[id] = new TrackBufferAppendState(stream);
+  return true;
+}
+
+void FrameProcessorBase::Reset() {
+  DVLOG(2) << __FUNCTION__ << "()";
+  for (TrackMap::iterator itr = tracks_.begin(); itr != tracks_.end(); ++itr) {
+    itr->second->Reset();
+  }
+}
+
+TrackBufferAppendState* FrameProcessorBase::FindTrack(
+    StreamParser::TrackId id) {
+  TrackMap::iterator itr = tracks_.find(id);
+  if (itr == tracks_.end())
+    return NULL;
+
+  return itr->second;
+}
+
+}  // namespace media