Pass more detailed audio hardware configuration information to the renderer

content/common/media/media_param_traits.cc

Index: content/common/media/media_param_traits.cc
===================================================================
--- content/common/media/media_param_traits.cc	(revision 185058)
+++ content/common/media/media_param_traits.cc	(working copy)
@@ -5,17 +5,54 @@
 #include "content/common/media/media_param_traits.h"
 
 #include "base/stringprintf.h"
+#include "media/base/audio_hardware_config.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/limits.h"
 #include "media/video/capture/video_capture_types.h"
 
+using media::AudioHardwareConfig;
 using media::AudioParameters;
 using media::ChannelLayout;
 using media::VideoCaptureParams;
 using media::VideoCaptureSessionId;
 
 namespace IPC {
+    
+void ParamTraits<AudioHardwareConfig>::Write(Message* m,
+                                             const AudioHardwareConfig& p) {
+  m->WriteInt(static_cast<int>(p.GetOutputBufferSize()));
+  m->WriteInt(static_cast<int>(p.GetOutputSampleRate()));
+  m->WriteInt(static_cast<int>(p.GetOutputChannels()));
+  m->WriteInt(static_cast<int>(p.GetOutputChannelLayout()));
+  m->WriteInt(static_cast<int>(p.GetInputSampleRate()));
+  m->WriteInt(static_cast<int>(p.GetInputChannels()));
+  m->WriteInt(static_cast<int>(p.GetInputChannelLayout()));
+}
 
+bool ParamTraits<AudioHardwareConfig>::Read(const Message* m,
+                                            PickleIterator* iter,
+                                            AudioHardwareConfig* r) {
+  int buffer_size, output_sample_rate, output_channels, output_channel_layout,
+      input_sample_rate, input_channels, input_channel_layout;
+
+  if (!m->ReadInt(iter, &buffer_size) ||
+      !m->ReadInt(iter, &output_sample_rate) ||
+      !m->ReadInt(iter, &output_channels) ||
+      !m->ReadInt(iter, &output_channel_layout) ||
+      !m->ReadInt(iter, &input_sample_rate) ||
+      !m->ReadInt(iter, &input_channels) ||
+      !m->ReadInt(iter, &input_channel_layout))
+    return false;
+  r->Reset(buffer_size,
+           output_sample_rate,
+           output_channels,
+           static_cast<ChannelLayout>(output_channel_layout),
+           input_sample_rate,
+           input_channels,
+           static_cast<ChannelLayout>(input_channel_layout));
+  return true;
+}
+
 void ParamTraits<AudioParameters>::Write(Message* m,
                                          const AudioParameters& p) {
   m->WriteInt(static_cast<int>(p.format()));