git-svn-id: http://webrtc.googlecode.com/svn/trunk@4 4adac7df-926f-26a2-2b94-8c16560cd09d

modules/video_coding/main/source/frame_list.cc

@@ -0,0 +1,113 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "frame_list.h"
+#include "frame_buffer.h"
+#include "jitter_buffer.h"
+#include <cstdlib>
+
+namespace webrtc {
+
+VCMFrameListTimestampOrderAsc::~VCMFrameListTimestampOrderAsc()
+{
+    Flush();
+}
+
+void
+VCMFrameListTimestampOrderAsc::Flush()
+{
+    while(Erase(First()) != -1) { }
+}
+
+// Inserts frame in timestamp order, with the oldest timestamp first. Takes wrap arounds into account
+WebRtc_Word32
+VCMFrameListTimestampOrderAsc::Insert(VCMFrameBuffer* frame)
+{
+    VCMFrameListItem* item = static_cast<VCMFrameListItem*>(First());
+    VCMFrameListItem* newItem = new VCMFrameListItem(frame);
+    bool inserted = false;
+    if (newItem == NULL)
+    {
+        return -1;
+    }
+    while (item != NULL)
+    {
+        const WebRtc_UWord32 itemTimestamp = item->GetItem()->TimeStamp();
+        if (VCMJitterBuffer::LatestTimestamp(itemTimestamp, frame->TimeStamp()) == itemTimestamp)
+        {
+            if (InsertBefore(item, newItem) < 0)
+            {
+                delete newItem;
+                return -1;
+            }
+            inserted = true;
+            break;
+        }
+        item = Next(item);
+    }
+    if (!inserted && ListWrapper::Insert(ListWrapper::Last(), newItem) < 0)
+    {
+        delete newItem;
+        return -1;
+    }
+    return 0;
+}
+
+VCMFrameBuffer*
+VCMFrameListTimestampOrderAsc::FirstFrame() const
+{
+    VCMFrameListItem* item = First();
+    if (item != NULL)
+    {
+        return item->GetItem();
+    }
+    return NULL;
+}
+
+VCMFrameListItem*
+VCMFrameListTimestampOrderAsc::FindFrameListItem(FindFrameCriteria criteria,
+                                         const void* compareWith,
+                                         VCMFrameListItem* startItem) const
+{
+    if (startItem == NULL)
+    {
+        startItem = First();
+    }
+    if (criteria == NULL)
+    {
+        return NULL;
+    }
+    while (startItem != NULL)
+    {
+        if (criteria(startItem->GetItem(), compareWith))
+        {
+            return startItem;
+        }
+        startItem = Next(startItem);
+    }
+    // No frame found
+    return NULL;
+}
+
+VCMFrameBuffer*
+VCMFrameListTimestampOrderAsc::FindFrame(FindFrameCriteria criteria,
+                                         const void* compareWith,
+                                         VCMFrameListItem* startItem) const
+{
+    const VCMFrameListItem* frameListItem = FindFrameListItem(criteria, compareWith, startItem);
+    if (frameListItem == NULL)
+    {
+        return NULL;
+    }
+    return frameListItem->GetItem();
+}
+
+}
+