Enable cpplint for webrtc/video_engine

Enable cpplint and have it use a whitelist that also checks
in subdirectories.

Move the cpplint check so it runs before the pylint check
since that one always run and increases the time to errors
for cpplint.

Fix all cpplint errors in webrtc/video_engine.

BUG=webrtc:5149
TESTED=Fixed issues reported by:
find webrtc/video_engine -type f -name *.cc -o -name *.h | xargs cpplint.py
followed by 'git cl presubmit'.

R=pbos@chromium.org, phoglund@chromium.org
TBR=pbos@webrtc.org, phoglund@webrtc.org

Review URL: https://codereview.webrtc.org/1481723003 .

Cr-Commit-Position: refs/heads/master@{#10808}

PRESUBMIT.py

@@ -14,6 +14,12 @@ import subprocess
 import sys
 
 
+# Directories that will be scanned by cpplint by the presubmit script.
+CPPLINT_DIRS = [
+  'webrtc/video_engine',
+]
+
+
 def _CheckNoIOStreamInHeaders(input_api, output_api):
   """Checks to make sure no .h files include <iostream>."""
   files = []
@@ -54,6 +60,14 @@ def _CheckNoFRIEND_TEST(input_api, output_api):
       'use FRIEND_TEST_ALL_PREFIXES() instead.\n' + '\n'.join(problems))]
 
 
+def _IsLintWhitelisted(whitelist_dirs, file_path):
+  """ Checks if a file is whitelisted for lint check."""
+  for path in whitelist_dirs:
+    if os.path.dirname(file_path).startswith(path):
+      return True
+  return False
+
+
 def _CheckApprovedFilesLintClean(input_api, output_api,
                                  source_file_filter=None):
   """Checks that all new or whitelisted .cc and .h files pass cpplint.py.
@@ -68,6 +82,10 @@ def _CheckApprovedFilesLintClean(input_api, output_api,
   # pylint: disable=W0212
   cpplint._cpplint_state.ResetErrorCounts()
 
+  # Create a platform independent whitelist for the CPPLINT_DIRS.
+  whitelist_dirs = [input_api.os_path.join(*path.split('/'))
+                    for path in CPPLINT_DIRS]
+
   # Use the strictest verbosity level for cpplint.py (level 1) which is the
   # default when running cpplint.py from command line.
   # To make it possible to work with not-yet-converted code, we're only applying
@@ -76,7 +94,7 @@ def _CheckApprovedFilesLintClean(input_api, output_api,
   files = []
   for f in input_api.AffectedSourceFiles(source_file_filter):
     # Note that moved/renamed files also count as added.
-    if f.Action() == 'A':
+    if f.Action() == 'A' or _IsLintWhitelisted(whitelist_dirs, f.LocalPath()):
       files.append(f.AbsoluteLocalPath())
 
   for file_name in files:
@@ -249,6 +267,7 @@ def _RunPythonTests(input_api, output_api):
 def _CommonChecks(input_api, output_api):
   """Checks common to both upload and commit."""
   results = []
+  results.extend(_CheckApprovedFilesLintClean(input_api, output_api))
   results.extend(input_api.canned_checks.RunPylint(input_api, output_api,
       black_list=(r'^.*gviz_api\.py$',
                   r'^.*gaeunit\.py$',
@@ -298,7 +317,6 @@ def _CommonChecks(input_api, output_api):
       input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeTodoHasOwner(
       input_api, output_api))
-  results.extend(_CheckApprovedFilesLintClean(input_api, output_api))
   results.extend(_CheckNoIOStreamInHeaders(input_api, output_api))
   results.extend(_CheckNoFRIEND_TEST(input_api, output_api))
   results.extend(_CheckGypChanges(input_api, output_api))

webrtc/video_engine/overuse_frame_detector.h

@@ -71,9 +71,9 @@ struct CpuOveruseMetrics {
       : avg_encode_time_ms(-1),
         encode_usage_percent(-1) {}
 
-  int avg_encode_time_ms;   // The average encode time in ms.
-  int encode_usage_percent; // The average encode time divided by the average
-                            // time difference between incoming captured frames.
+  int avg_encode_time_ms;    // Average encode time in ms.
+  int encode_usage_percent;  // Average encode time divided by the average time
+                             // difference between incoming captured frames.
 };
 
 class CpuOveruseMetricsObserver {

webrtc/video_engine/overuse_frame_detector_unittest.cc

@@ -188,7 +188,7 @@ TEST_F(OveruseFrameDetectorTest, ConstantOveruseGivesNoNormalUsage) {
   ReinitializeOveruseDetector();
   EXPECT_CALL(*(observer_.get()), NormalUsage()).Times(0);
   EXPECT_CALL(*(observer_.get()), OveruseDetected()).Times(64);
-  for(size_t i = 0; i < 64; ++i) {
+  for (size_t i = 0; i < 64; ++i) {
     TriggerOveruse(options_.high_threshold_consecutive_count);
   }
 }

webrtc/video_engine/payload_router_unittest.cc

@@ -182,7 +182,7 @@ TEST_F(PayloadRouterTest, SetTargetSendBitrates) {
 
   const uint32_t bitrate_1 = 10000;
   const uint32_t bitrate_2 = 76543;
-  std::vector<uint32_t> bitrates (2, bitrate_1);
+  std::vector<uint32_t> bitrates(2, bitrate_1);
   bitrates[1] = bitrate_2;
   EXPECT_CALL(rtp_1, SetTargetSendBitrate(bitrate_1))
       .Times(1);

webrtc/video_engine/stream_synchronization_unittest.cc

@@ -8,9 +8,10 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <algorithm>
 #include <math.h>
 
+#include <algorithm>
+
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/video_engine/stream_synchronization.h"
 

webrtc/video_engine/vie_channel.cc

@@ -11,6 +11,7 @@
 #include "webrtc/video_engine/vie_channel.h"
 
 #include <algorithm>
+#include <map>
 #include <vector>
 
 #include "webrtc/base/checks.h"
@@ -60,7 +61,7 @@ class ChannelStatsObserver : public CallStatsObserver {
 
 class ViEChannelProtectionCallback : public VCMProtectionCallback {
  public:
-  ViEChannelProtectionCallback(ViEChannel* owner) : owner_(owner) {}
+  explicit ViEChannelProtectionCallback(ViEChannel* owner) : owner_(owner) {}
   ~ViEChannelProtectionCallback() {}
 
 

webrtc/video_engine/vie_channel.h

@@ -12,6 +12,8 @@
 #define WEBRTC_VIDEO_ENGINE_VIE_CHANNEL_H_
 
 #include <list>
+#include <map>
+#include <vector>
 
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/scoped_ref_ptr.h"

webrtc/video_engine/vie_receiver.h

@@ -12,6 +12,7 @@
 #define WEBRTC_VIDEO_ENGINE_VIE_RECEIVER_H_
 
 #include <list>
+#include <vector>
 
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/engine_configurations.h"
@@ -84,6 +85,7 @@ class ViEReceiver : public RtpData {
   bool OnRecoveredPacket(const uint8_t* packet, size_t packet_length) override;
 
   ReceiveStatistics* GetReceiveStatistics() const;
+
  private:
   int InsertRTPPacket(const uint8_t* rtp_packet, size_t rtp_packet_length,
                       const PacketTime& packet_time);
@@ -125,6 +127,6 @@ class ViEReceiver : public RtpData {
   int64_t last_packet_log_ms_;
 };
 
-}  // namespace webrt
+}  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_ENGINE_VIE_RECEIVER_H_

webrtc/video_engine/vie_remb_unittest.cc

@@ -11,11 +11,10 @@
 
 // This file includes unit tests for ViERemb.
 
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
 #include <vector>
 
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h"
 #include "webrtc/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h"