diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 9c270c8..d880989 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -449,7 +449,7 @@
 
         OutputDescriptor *outputDesc =  new OutputDescriptor(*desc);
         gOutputs.add(ioHandle, outputDesc);
-        ALOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d",
+        ALOGV("ioConfigChanged() new output samplingRate %d, format %d channels %#x frameCount %d latency %d",
                 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency);
         } break;
     case OUTPUT_CLOSED: {
@@ -471,7 +471,7 @@
         if (param2 == NULL) break;
         desc = (const OutputDescriptor *)param2;
 
-        ALOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %d frameCount %d latency %d",
+        ALOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %#x frameCount %d latency %d",
                 ioHandle, desc->samplingRate, desc->format,
                 desc->channels, desc->frameCount, desc->latency);
         OutputDescriptor *outputDesc = gOutputs.valueAt(index);
@@ -588,12 +588,12 @@
 audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream,
                                     uint32_t samplingRate,
                                     audio_format_t format,
-                                    uint32_t channels,
+                                    audio_channel_mask_t channelMask,
                                     audio_output_flags_t flags)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return 0;
-    return aps->getOutput(stream, samplingRate, format, channels, flags);
+    return aps->getOutput(stream, samplingRate, format, channelMask, flags);
 }
 
 status_t AudioSystem::startOutput(audio_io_handle_t output,
@@ -624,12 +624,12 @@
 audio_io_handle_t AudioSystem::getInput(audio_source_t inputSource,
                                     uint32_t samplingRate,
                                     audio_format_t format,
-                                    uint32_t channels,
+                                    audio_channel_mask_t channelMask,
                                     int sessionId)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return 0;
-    return aps->getInput(inputSource, samplingRate, format, channels, sessionId);
+    return aps->getInput(inputSource, samplingRate, format, channelMask, sessionId);
 }
 
 status_t AudioSystem::startInput(audio_io_handle_t input)