Support floating-point audio output for Linux

media/audio/pulse/pulse_util.cc

Index: media/audio/pulse/pulse_util.cc
diff --git a/media/audio/pulse/pulse_util.cc b/media/audio/pulse/pulse_util.cc
index 8d6b06cebd9d745fb6a7fa6e0ebc2e512b2757a6..0bb39f88d4970a42ead2f63cd4c58f75dbb58209 100644
--- a/media/audio/pulse/pulse_util.cc
+++ b/media/audio/pulse/pulse_util.cc
@@ -179,8 +179,12 @@ bool CreateInputStream(pa_threaded_mainloop* mainloop,
 
   // Set sample specifications.
   pa_sample_spec sample_specifications;
+#if 1

[DaleCurtis, 2016/11/01 18:51:37]

#if 0?

[Raymond Toy, 2016/11/01 20:00:50]

This is for the input stream. I don't want to change that yet.

   sample_specifications.format = BitsToPASampleFormat(
       params.bits_per_sample());
+#else
+  sample_specifications.format = PA_SAMPLE_FLOAT32;
+#endif
   sample_specifications.rate = params.sample_rate();
   sample_specifications.channels = params.channels();
 
@@ -285,8 +289,12 @@ bool CreateOutputStream(pa_threaded_mainloop** mainloop,
 
   // Set sample specifications.
   pa_sample_spec sample_specifications;
+#if 0
   sample_specifications.format = BitsToPASampleFormat(
       params.bits_per_sample());
+#else
+  sample_specifications.format = PA_SAMPLE_FLOAT32;
+#endif
   sample_specifications.rate = params.sample_rate();
   sample_specifications.channels = params.channels();