Work on improving PpbAudioConfig:RecommendSampleFrameCount

Add version 1.1 which will query the audio back end for the best available
sample frame count. Also add RecommendSampleRate.  Switch pepper plugin
delegate to use AUDIO_PCM_LOW_LATENCY if client request is compatible.

TEST=included
BUG=http://code.google.com/p/chromium/issues/detail?id=107572
Review URL: https://chromiumcodereview.appspot.com/9129007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@122653 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 39 insertions, 0 deletions

diff --git a/ppapi/proxy/ppb_instance_proxy.cc b/ppapi/proxy/ppb_instance_proxy.cc
index 5bdde43..1f71e87 100644
--- a/ppapi/proxy/ppb_instance_proxy.cc
+++ b/ppapi/proxy/ppb_instance_proxy.cc
@@ -6,6 +6,7 @@
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_var.h"
+#include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_instance.h"
 #include "ppapi/c/ppb_messaging.h"
 #include "ppapi/c/ppb_mouse_lock.h"
@@ -82,6 +83,12 @@ bool PPB_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
                         OnHostMsgBindGraphics)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_IsFullFrame,
                         OnHostMsgIsFullFrame)
+    IPC_MESSAGE_HANDLER(
+        PpapiHostMsg_PPBInstance_GetAudioHardwareOutputSampleRate,
+        OnHostMsgGetAudioHardwareOutputSampleRate)
+    IPC_MESSAGE_HANDLER(
+        PpapiHostMsg_PPBInstance_GetAudioHardwareOutputBufferSize,
+        OnHostMsgGetAudioHardwareOutputBufferSize)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_ExecuteScript,
                         OnHostMsgExecuteScript)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetDefaultCharSet,
@@ -185,6 +192,24 @@ PP_Var PPB_Instance_Proxy::ExecuteScript(PP_Instance instance,
   return result.Return(dispatcher());
 }
 
+uint32_t PPB_Instance_Proxy::GetAudioHardwareOutputSampleRate(
+    PP_Instance instance) {
+  uint32_t result = PP_AUDIOSAMPLERATE_NONE;
+  dispatcher()->Send(
+      new PpapiHostMsg_PPBInstance_GetAudioHardwareOutputSampleRate(
+          API_ID_PPB_INSTANCE, instance, &result));
+  return result;
+}
+
+uint32_t PPB_Instance_Proxy::GetAudioHardwareOutputBufferSize(
+    PP_Instance instance) {
+  uint32_t result = 0;
+  dispatcher()->Send(
+      new PpapiHostMsg_PPBInstance_GetAudioHardwareOutputBufferSize(
+          API_ID_PPB_INSTANCE, instance, &result));
+  return result;
+}
+
 PP_Var PPB_Instance_Proxy::GetDefaultCharSet(PP_Instance instance) {
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
   if (!dispatcher)
@@ -421,6 +446,20 @@ void PPB_Instance_Proxy::OnHostMsgBindGraphics(PP_Instance instance,
   }
 }
 
+void PPB_Instance_Proxy::OnHostMsgGetAudioHardwareOutputSampleRate(
+    PP_Instance instance, uint32_t* result) {
+  EnterInstanceNoLock enter(instance, false);
+  if (enter.succeeded())
+    *result = enter.functions()->GetAudioHardwareOutputSampleRate(instance);
+}
+
+void PPB_Instance_Proxy::OnHostMsgGetAudioHardwareOutputBufferSize(
+    PP_Instance instance, uint32_t* result) {
+  EnterInstanceNoLock enter(instance, false);
+  if (enter.succeeded())
+    *result = enter.functions()->GetAudioHardwareOutputBufferSize(instance);
+}
+
 void PPB_Instance_Proxy::OnHostMsgIsFullFrame(PP_Instance instance,
                                               PP_Bool* result) {
   EnterInstanceNoLock enter(instance, false);