Proper FMOD initialization for 3d sound courtesy Mojito Sorbet

git-svn-id: https://radegast.googlecode.com/svn/trunk@216 f7a694da-4d33-11de-9ad6-1127a62b9fcd

diff --git a/Radegast/Core/Media/MediaManager.cs b/Radegast/Core/Media/MediaManager.cs
index f9cf85a..7d6f2f4 100644 (file)
--- a/Radegast/Core/Media/MediaManager.cs
+++ b/Radegast/Core/Media/MediaManager.cs
@@ -66,17 +66,77 @@ namespace Radegast.Media
                 if (version < FMOD.VERSION.number)\r
                     throw new MediaException("You are using an old version of FMOD " + version.ToString("X") + ".  This program requires " + FMOD.VERSION.number.ToString("X") + ".");\r
 \r
-                if (Environment.OSVersion.Platform == PlatformID.Unix)\r
+                // Assume no special hardware capabilities except 5.1 surround sound.\r
+                FMOD.CAPS caps = FMOD.CAPS.NONE;\r
+                FMOD.SPEAKERMODE speakermode = FMOD.SPEAKERMODE._5POINT1;\r
+\r
+                // Get the capabilities of the driver.\r
+                int minfrequency = 0, maxfrequency = 0;\r
+                StringBuilder name = new StringBuilder(128);\r
+                FMODExec(system.getDriverCaps(0, ref caps,\r
+                    ref minfrequency, ref maxfrequency,\r
+                    ref speakermode)\r
+                );\r
+\r
+                // Set FMOD speaker mode to what the driver supports.\r
+                FMODExec(system.setSpeakerMode(speakermode));\r
+\r
+                // Forcing the ESD sound system on Linux seems to avoid a CPU loop\r
+                if (System.Environment.OSVersion.Platform == PlatformID.Unix)\r
                     FMODExec(system.setOutput(FMOD.OUTPUTTYPE.ESD));\r
-                FMODExec(system.init(100, FMOD.INITFLAG.NORMAL, (IntPtr)null));\r
-                FMODExec(system.setStreamBufferSize(64 * 1024, FMOD.TIMEUNIT.RAWBYTES));\r
+\r
+                // The user has the 'Acceleration' slider set to off, which\r
+                // is really bad for latency.  At 48khz, the latency between\r
+                // issuing an fmod command and hearing it will now be about 213ms.\r
+                if ((caps & FMOD.CAPS.HARDWARE_EMULATED) == FMOD.CAPS.HARDWARE_EMULATED)\r
+                {\r
+                    FMODExec(system.setDSPBufferSize(1024, 10));\r
+                }\r
+\r
+                // Get driver information so we can check for a wierd one.\r
+                FMOD.GUID guid = new FMOD.GUID();\r
+                FMODExec(system.getDriverInfo(0, name, 128, ref guid));\r
+\r
+                // Sigmatel sound devices crackle for some reason if the format is pcm 16bit.\r
+                // pcm floating point output seems to solve it.\r
+                if (name.ToString().IndexOf("SigmaTel") != -1)\r
+                {\r
+                    FMODExec(system.setSoftwareFormat(\r
+                        48000,\r
+                        FMOD.SOUND_FORMAT.PCMFLOAT,\r
+                        0, 0,\r
+                        FMOD.DSP_RESAMPLER.LINEAR)\r
+                    );\r
+                }\r
+\r
+                // Try to initialize with all those settings, and Max 32 channels.\r
+                FMOD.RESULT result = system.init(32, FMOD.INITFLAG.NORMAL, (IntPtr)null);\r
+                if (result == FMOD.RESULT.ERR_OUTPUT_CREATEBUFFER)\r
+                {\r
+                    // Can not handle surround sound - back to Stereo.\r
+                    FMODExec(system.setSpeakerMode(FMOD.SPEAKERMODE.STEREO));\r
+\r
+                    // And init again.\r
+                    FMODExec(system.init(\r
+                        32,\r
+                        FMOD.INITFLAG.NORMAL,\r
+                        (IntPtr)null)\r
+                    );\r
+                }\r
+\r
+                // Set real-world effect scales.\r
+                FMODExec(system.set3DSettings(\r
+                    1.0f,   // Doppler scale\r
+                    1.0f,   // Distance scale is meters\r
+                    1.0f)   // Rolloff factor\r
+                );\r
 \r
                 soundSystemAvailable = true;\r
                 Logger.Log("Initialized FMOD Ex", Helpers.LogLevel.Debug);\r
             }\r
             catch (Exception ex)\r
             {\r
-                Logger.Log("Failed to initialize the sound system", Helpers.LogLevel.Warning, ex);\r
+                Logger.Log("Failed to initialize the sound system: ", Helpers.LogLevel.Warning, ex);\r
             }\r
         }\r
 \r