Enable verbose logging through --v or --vmodule

Change-Id: I36d8d3dd11abe10ce598ef92f38a2a33a15d8f8e

packager/app/mpd_generator.cc

@@ -5,6 +5,8 @@
 // https://developers.google.com/open-source/licenses/bsd
 
 #include "packager/app/mpd_generator_flags.h"
+#include "packager/app/vlog_flags.h"
+#include "packager/base/command_line.h"
 #include "packager/base/logging.h"
 #include "packager/base/strings/string_split.h"
 #include "packager/base/strings/stringprintf.h"
@@ -77,6 +79,10 @@ ExitStatus RunMpdGenerator() {
 }
 
 int MpdMain(int argc, char** argv) {
+  // Needed to enable VLOG/DVLOG through --vmodule or --v.
+  base::CommandLine::Init(argc, argv);
+  CHECK(logging::InitLogging(logging::LoggingSettings()));
+
   google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));
   google::ParseCommandLineFlags(&argc, &argv, true);
 

packager/app/packager_main.cc

@@ -13,7 +13,9 @@
 #include "packager/app/muxer_flags.h"
 #include "packager/app/packager_util.h"
 #include "packager/app/stream_descriptor.h"
+#include "packager/app/vlog_flags.h"
 #include "packager/app/widevine_encryption_flags.h"
+#include "packager/base/command_line.h"
 #include "packager/base/logging.h"
 #include "packager/base/stl_util.h"
 #include "packager/base/strings/string_split.h"
@@ -310,6 +312,10 @@ bool RunPackager(const StreamDescriptorList& stream_descriptors) {
 }
 
 int PackagerMain(int argc, char** argv) {
+  // Needed to enable VLOG/DVLOG through --vmodule or --v.
+  base::CommandLine::Init(argc, argv);
+  CHECK(logging::InitLogging(logging::LoggingSettings()));
+
   google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));
   google::ParseCommandLineFlags(&argc, &argv, true);
   if (argc < 2) {

packager/app/vlog_flags.cc

@@ -0,0 +1,26 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd
+//
+// Defines verbose logging flags.
+
+#include "packager/app/vlog_flags.h"
+
+DEFINE_int32(v,
+             0,
+             "Show all VLOG(m) or DVLOG(m) messages for m <= this. "
+             "Overridable by --vmodule.");
+DEFINE_string(
+    vmodule,
+    "",
+    "Per-module verbose level."
+    "Argument is a comma-separated list of <module name>=<log level>. "
+    "<module name> is a glob pattern, matched against the filename base "
+    "(that is, name ignoring .cc/.h./-inl.h). "
+    "A pattern without slashes matches just the file name portion, otherwise "
+    "the whole file path (still without .cc/.h./-inl.h) is matched. "
+    "? and * in the glob pattern match any single or sequence of characters "
+    "respectively including slashes. "
+    "<log level> overrides any value given by --v.");

packager/app/vlog_flags.h

@@ -0,0 +1,15 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd
+
+#ifndef APP_VLOG_FLAGS_H_
+#define APP_VLOG_FLAGS_H_
+
+#include <gflags/gflags.h>
+
+DECLARE_int32(v);
+DECLARE_string(vmodule);
+
+#endif  // APP_VLOG_FLAGS_H_

packager/packager.gyp

@@ -28,6 +28,8 @@
         'app/stream_descriptor.h',
         'app/validate_flag.cc',
         'app/validate_flag.h',
+        'app/vlog_flags.cc',
+        'app/vlog_flags.h',
         'app/widevine_encryption_flags.cc',
         'app/widevine_encryption_flags.h',
       ],
@@ -51,6 +53,8 @@
       'sources': [
         'app/mpd_generator.cc',
         'app/mpd_generator_flags.h',
+        'app/vlog_flags.cc',
+        'app/vlog_flags.h',
       ],
       'dependencies': [
         'base/base.gyp:base',