From 248e4f2672d779f219c8fe3472a444596ae8110b Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Mon, 9 Jul 2012 13:59:18 +0000
Subject: [PATCH] add fmod-speaker-mode variable

---
 panda/src/audio/config_audio.cxx           | 68 +++++++++++++++++++++-
 panda/src/audio/config_audio.h             | 19 ++++++
 panda/src/audiotraits/fmodAudioManager.cxx | 16 +++--
 3 files changed, 96 insertions(+), 7 deletions(-)

diff --git a/panda/src/audio/config_audio.cxx b/panda/src/audio/config_audio.cxx
index 61c34cada7..b97ce9e1ef 100644
--- a/panda/src/audio/config_audio.cxx
+++ b/panda/src/audio/config_audio.cxx
@@ -82,7 +82,14 @@ ConfigVariableInt fmod_number_of_sound_channels
 
 ConfigVariableBool fmod_use_surround_sound
 ("fmod-use-surround-sound", false, 
- PRC_DESC("Determines if an FMOD Flavor of PANDA use 5.1 Surround Sound or Not.") );
+ PRC_DESC("Determines if an FMOD Flavor of PANDA use 5.1 Surround Sound or not.  "
+          "This variable is deprecated and should not be used.  Use the enum "
+          "variable fmod-speaker-mode instead."));
+
+ConfigVariableEnum<FmodSpeakerMode> fmod_speaker_mode
+("fmod-speaker-mode", FSM_unspecified,
+ PRC_DESC("Sets the speaker configuration that the FMOD sound system will use. "
+          "Options: raw, mono, stereo, quad, surround, 5.1, 7.1 and prologic. "));
 
 
 // Config variables for Miles:
@@ -116,8 +123,6 @@ ConfigVariableInt audio_output_bits
 ConfigVariableInt audio_output_channels
 ("audio-output-channels", 2);
 
-
-
 ConfigureFn(config_audio) {
   FilterProperties::init_type();
   AudioLoadRequest::init_type();
@@ -127,5 +132,62 @@ ConfigureFn(config_audio) {
   NullAudioSound::init_type();
 }
 
+ostream &
+operator << (ostream &out, FmodSpeakerMode sm) {
+  switch (sm) {
+  case FSM_raw:
+    return out << "raw";
+  case FSM_mono:
+    return out << "mono";
+  case FSM_stereo:
+    return out << "stereo";
+  case FSM_quad:
+    return out << "quad";
+  case FSM_surround:
+    return out << "surround";
+  case FSM_5point1:
+    return out << "5.1";
+  case FSM_7point1:
+    return out << "7.1";
+  case FSM_prologic:
+    return out << "prologic";
+  case FSM_unspecified:
+    return out;
+  }
 
+  return out << "**invalid FmodSpeakerMode (" << (int)sm << ")**";
+}
 
+istream &
+operator >> (istream &in, FmodSpeakerMode &sm) {
+  string word;
+  in >> word;
+
+  if (word.size() == 0) {
+    sm = FSM_unspecified;
+  } else if (cmp_nocase(word, "raw") == 0) {
+    sm = FSM_raw;
+  } else if (cmp_nocase(word, "mono") == 0) {
+    sm = FSM_mono;
+  } else if (cmp_nocase(word, "stereo") == 0) {
+    sm = FSM_stereo;
+  } else if (cmp_nocase(word, "quad") == 0) {
+    sm = FSM_quad;
+  } else if (cmp_nocase(word, "surround") == 0) {
+    sm = FSM_surround;
+  } else if (cmp_nocase(word, "5point1") == 0 ||
+             cmp_nocase(word, "5.1") == 0) {
+    sm = FSM_5point1;
+  } else if (cmp_nocase(word, "7point1") == 0 ||
+             cmp_nocase(word, "7.1") == 0) {
+    sm = FSM_7point1;
+  } else if (cmp_nocase(word, "prologic") == 0) {
+    sm = FSM_prologic;
+
+  } else {
+    gobj_cat->error() << "Invalid FmodSpeakerMode value: " << word << "\n";
+    sm = FSM_unspecified;
+  }
+
+  return in;
+}
diff --git a/panda/src/audio/config_audio.h b/panda/src/audio/config_audio.h
index 1dd7c79aae..68ab186125 100644
--- a/panda/src/audio/config_audio.h
+++ b/panda/src/audio/config_audio.h
@@ -39,8 +39,27 @@ extern EXPCL_PANDA_AUDIO ConfigVariableString audio_library_name;
 
 // Config vars for Fmod:
 
+// Values match FMOD_SPEAKERMODE enum.
+enum FmodSpeakerMode {
+  FSM_raw,
+  FSM_mono,
+  FSM_stereo,
+  FSM_quad,
+  FSM_surround,
+  FSM_5point1,
+  FSM_7point1,
+  FSM_prologic,
+
+  // For backward compatibility
+  FSM_unspecified
+};
+
+EXPCL_FMOD_AUDIO ostream &operator << (ostream &out, FmodSpeakerMode sm);
+EXPCL_FMOD_AUDIO istream &operator >> (istream &in, FmodSpeakerMode &sm);
+
 extern EXPCL_PANDA_AUDIO ConfigVariableInt fmod_number_of_sound_channels;
 extern EXPCL_PANDA_AUDIO ConfigVariableBool fmod_use_surround_sound;
+extern EXPCL_PANDA_AUDIO ConfigVariableEnum<FmodSpeakerMode> fmod_speaker_mode;
 
 // Config vars for OpenAL:
 
diff --git a/panda/src/audiotraits/fmodAudioManager.cxx b/panda/src/audiotraits/fmodAudioManager.cxx
index 24f15bb84c..9fde62e0b7 100644
--- a/panda/src/audiotraits/fmodAudioManager.cxx
+++ b/panda/src/audiotraits/fmodAudioManager.cxx
@@ -128,10 +128,18 @@ FmodAudioManager() {
       audio_error("You are using an old version of FMOD.  This program requires:" << FMOD_VERSION);
     }
 
-    //Stick Surround Sound 5.1 thing Here.
-    if (fmod_use_surround_sound) {
-      audio_debug("Setting FMOD to use 5.1 Surround Sound.");
-      result = _system->setSpeakerMode(FMOD_SPEAKERMODE_5POINT1);
+    // Set speaker mode.
+    if (fmod_speaker_mode.get_value() == FSM_unspecified) {
+      if (fmod_use_surround_sound) {
+        // fmod-use-surround-sound is the old variable, now replaced
+        // by fmod-speaker-mode.  This is for backward compatibility.
+        result = _system->setSpeakerMode(FMOD_SPEAKERMODE_5POINT1);
+        fmod_audio_errcheck("_system->setSpeakerMode()", result);
+      }
+    } else {
+      FMOD_SPEAKERMODE speakerMode;
+      speakerMode = (FMOD_SPEAKERMODE) fmod_speaker_mode.get_value();
+      result = _system->setSpeakerMode(speakerMode);
       fmod_audio_errcheck("_system->setSpeakerMode()", result);
     }