Merge changes I7bbf776e,I1b827825

am: fe8b4a6579

* commit 'fe8b4a657979b49e1701bd92f6d5814a99e0b2be': (7237 commits)
  WIP: Changes after merge commit 'cb3f9bd'
  Make the nonlinear beamformer steerable
  Utilize bitrate above codec max to protect video.
  Enable VP9 internal resize by default.
  Filter overlapping RTP header extensions.
  Make VCMEncodedFrameCallback const.
  MediaCodecVideoEncoder: Add number of quality resolution downscales to Encoded callback.
  Remove redudant encoder rate calls.
  Create isolate files for nonparallel tests.
  Register header extensions in RtpRtcpObserver to avoid log spam.
  Make an enum class out of NetEqDecoder, and hide the neteq_decoders_ table
  ACM: Move NACK functionality inside NetEq
  Fix chromium-style warnings in webrtc/sound/.
  Create a 'webrtc_nonparallel_tests' target.
  Update scalability structure data according to updates in the RTP payload profile.
  audio_coding: rename interface -> include
  Rewrote perform_action_on_all_files to be parallell.
  Update reference indices according to updates in the RTP payload profile.
  Disable P2PTransport...TestFailoverControlledSide on Memcheck
  pass clangcl compile options to ignore warnings in gflags.cc
  ...

1 files changed, 80 insertions, 0 deletions

diff --git a/webrtc/base/bufferqueue.cc b/webrtc/base/bufferqueue.cc
new file mode 100644
index 0000000000..955af51f6b
--- /dev/null
+++ b/webrtc/base/bufferqueue.cc
@@ -0,0 +1,80 @@
+/*
+ *  Copyright 2015 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 "webrtc/base/bufferqueue.h"
+
+namespace rtc {
+
+BufferQueue::BufferQueue(size_t capacity, size_t default_size)
+    : capacity_(capacity), default_size_(default_size) {
+}
+
+BufferQueue::~BufferQueue() {
+  CritScope cs(&crit_);
+
+  for (Buffer* buffer : queue_) {
+    delete buffer;
+  }
+  for (Buffer* buffer : free_list_) {
+    delete buffer;
+  }
+}
+
+size_t BufferQueue::size() const {
+  CritScope cs(&crit_);
+  return queue_.size();
+}
+
+bool BufferQueue::ReadFront(void* buffer, size_t bytes, size_t* bytes_read) {
+  CritScope cs(&crit_);
+  if (queue_.empty()) {
+    return false;
+  }
+
+  Buffer* packet = queue_.front();
+  queue_.pop_front();
+
+  size_t next_packet_size = packet->size();
+  if (bytes > next_packet_size) {
+    bytes = next_packet_size;
+  }
+
+  memcpy(buffer, packet->data(), bytes);
+  if (bytes_read) {
+    *bytes_read = bytes;
+  }
+  free_list_.push_back(packet);
+  return true;
+}
+
+bool BufferQueue::WriteBack(const void* buffer, size_t bytes,
+                            size_t* bytes_written) {
+  CritScope cs(&crit_);
+  if (queue_.size() == capacity_) {
+    return false;
+  }
+
+  Buffer* packet;
+  if (!free_list_.empty()) {
+    packet = free_list_.back();
+    free_list_.pop_back();
+  } else {
+    packet = new Buffer(bytes, default_size_);
+  }
+
+  packet->SetData(static_cast<const uint8_t*>(buffer), bytes);
+  if (bytes_written) {
+    *bytes_written = bytes;
+  }
+  queue_.push_back(packet);
+  return true;
+}
+
+}  // namespace rtc