Add VAVDA, the VAAPI Video Decode Accelerator for Intel CPUs.

content/common/gpu/media/h264_dpb.cc

Index: content/common/gpu/media/h264_dpb.cc
diff --git a/content/common/gpu/media/h264_dpb.cc b/content/common/gpu/media/h264_dpb.cc
new file mode 100644
index 0000000000000000000000000000000000000000..56ef173b800a65354e4b854c49bb7bb3652cb945
--- /dev/null
+++ b/content/common/gpu/media/h264_dpb.cc
@@ -0,0 +1,118 @@
+// Copyright (c) 2012 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 <algorithm>
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "content/common/gpu/media/h264_dpb.h"
+
+namespace content {
+
+H264DPB::H264DPB() {}
+H264DPB::~H264DPB() {}
+
+void H264DPB::Clear() {
+  pics_.reset();
+}
+
+void H264DPB::RemoveByPOC(int poc) {
+  for (Pictures::iterator it = pics_.begin(); it != pics_.end(); ++it) {
+    if ((*it)->pic_order_cnt == poc) {
+      pics_.erase(it);
+      return;
+    }
+  }
+  NOTREACHED() << "Missing POC: " << poc;
+}
+
+void H264DPB::RemoveUnused() {
+  for (Pictures::iterator it = pics_.begin(); it != pics_.end(); ) {
+    if ((*it)->outputted && !(*it)->ref)
+      pics_.erase(it++);
+    else
+      ++it;
+  }
+}
+
+void H264DPB::StorePic(H264Picture* pic) {
+  DCHECK_LT(pics_.size(), kDPBMaxSize);
+  DVLOG(3) << "Adding PicNum: " << pic->pic_num << " ref: " << (int)pic->ref
+           << " longterm: " << (int)pic->long_term << " to DPB";
+  pics_.push_back(pic);
+}
+
+int H264DPB::CountRefPics() {
+  int ret = 0;
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    if (pics_[i]->ref)
+      ++ret;
+  }
+  return ret;
+}
+
+void H264DPB::MarkAllUnusedForRef() {
+  for (size_t i = 0; i < pics_.size(); ++i)
+    pics_[i]->ref = false;
+}
+
+H264Picture* H264DPB::GetShortRefPicByPicNum(int pic_num) {
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (pic->ref && !pic->long_term && pic->pic_num == pic_num)
+      return pic;
+  }
+
+  DVLOG(1) << "Missing short ref pic num: " << pic_num;
+  return NULL;
+}
+
+H264Picture* H264DPB::GetLongRefPicByLongTermPicNum(int pic_num) {
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (pic->ref && pic->long_term && pic->long_term_pic_num == pic_num)
+      return pic;
+  }
+
+  DVLOG(1) << "Missing long term pic num: " << pic_num;
+  return NULL;
+}
+
+H264Picture* H264DPB::GetLowestFrameNumWrapShortRefPic() {
+  H264Picture* ret = NULL;
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (pic->ref && !pic->long_term &&
+        (!ret || pic->frame_num_wrap < ret->frame_num_wrap))
+      ret = pic;
+  }
+  return ret;
+}
+
+void H264DPB::GetNotOutputtedPicsAppending(H264Picture::PtrVector& out) {
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (!pic->outputted)
+      out.push_back(pic);
+  }
+}
+
+void H264DPB::GetShortTermRefPicsAppending(H264Picture::PtrVector& out) {
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (pic->ref && !pic->long_term)
+      out.push_back(pic);
+  }
+}
+
+void H264DPB::GetLongTermRefPicsAppending(H264Picture::PtrVector& out) {
+  for (size_t i = 0; i < pics_.size(); ++i) {
+    H264Picture* pic = pics_[i];
+    if (pic->ref && pic->long_term)
+      out.push_back(pic);
+  }
+}
+
+}  // namespace content
+