Wrote a small portable tool for forcing the mic volume to 100%.

BUG=
R=henrika@webrtc.org, kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1477005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4045 4adac7df-926f-26a2-2b94-8c16560cd09d

2 files changed, 57 insertions, 0 deletions

diff --git a/tools/force_mic_volume_max/force_mic_volume_max.cc b/tools/force_mic_volume_max/force_mic_volume_max.cc
new file mode 100644
index 00000000..c824f8a8
--- /dev/null
+++ b/tools/force_mic_volume_max/force_mic_volume_max.cc
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (c) 2013 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.
+ */
+
+// This utility will portably force the volume of the default microphone to max.
+
+#include <cstdio>
+
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+#include "webrtc/test/channel_transport/include/channel_transport.h"
+#include "webrtc/voice_engine/include/voe_audio_processing.h"
+#include "webrtc/voice_engine/include/voe_base.h"
+#include "webrtc/voice_engine/include/voe_volume_control.h"
+
+int main(int argc, char** argv) {
+  webrtc::VoiceEngine* voe = webrtc::VoiceEngine::Create();
+  if (voe == NULL) {
+    fprintf(stderr, "Failed to initialize voice engine.\n");
+    return 1;
+  }
+
+  webrtc::VoEBase* base = webrtc::VoEBase::GetInterface(voe);
+  webrtc::VoEVolumeControl* volume_control =
+      webrtc::VoEVolumeControl::GetInterface(voe);
+
+  if (base->Init() != 0) {
+    fprintf(stderr, "Failed to initialize voice engine base.\n");
+    return 1;
+  }
+  // Set to 0 first in case the mic is above 100%.
+  if (volume_control->SetMicVolume(0) != 0) {
+    fprintf(stderr, "Failed set volume to 0.\n");
+    return 1;
+  }
+  if (volume_control->SetMicVolume(255) != 0) {
+    fprintf(stderr, "Failed set volume to 255.\n");
+    return 1;
+  }
+
+  return 0;
+}
diff --git a/tools/tools.gyp b/tools/tools.gyp
index 3a6787e2..a16ad518 100644
--- a/tools/tools.gyp
+++ b/tools/tools.gyp
@@ -102,6 +102,16 @@
         'frame_editing/frame_editing.cc',
       ],
     }, # frame_editing
+    {
+      'target_name': 'force_mic_volume_max',
+      'type': 'executable',
+      'dependencies': [
+        '<(webrtc_root)/voice_engine/voice_engine.gyp:voice_engine_core',
+      ],
+      'sources': [
+        'force_mic_volume_max/force_mic_volume_max.cc',
+      ],
+    }, # force_mic_volume_max
   ],
   'conditions': [
     ['include_tests==1', {