From aee99c2bd060141f49807499d4c2b39b2bb887ea Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Wed, 11 Mar 2009 04:56:43 +0000
Subject: [PATCH] - Added an SDL output plugin, so FMOD can produce sound using
 SDL's audio   support instead of its own OSS/ALSA/ESD support. This is
 selectable by   setting snd_output to "sdl".

SVN r1473 (trunk)
---
 CMakeLists.txt          |  4 ++++
 docs/rh-log.txt         |  6 ++++++
 src/m_options.cpp       |  1 +
 src/sound/fmodsound.cpp | 29 +++++++++++++++++++++++++++--
 src/sound/fmodsound.h   |  1 +
 5 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a69195d49..4a5518c4e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,3 +90,7 @@ add_subdirectory( dumb )
 add_subdirectory( gdtoa )
 add_subdirectory( wadsrc )
 add_subdirectory( src )
+
+if( NOT WIN32 )
+	add_subdirectory( output_sdl )
+endif( NOT WIN32 )
diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index bb64a33b8..8a57ef303 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,10 @@
 March 10, 2009
+- Added an SDL output plugin, so FMOD can produce sound using SDL's audio
+  support instead of its own OSS/ALSA/ESD support. This is selectable by
+  setting snd_output to "sdl".
+- Fixed: On Linux systems with ALSA but no OSS support, trying to start
+  the sound system with snd_output "default" would fail instead of trying
+  to use ALSA.
 - Added sdl_nokeyrepeat to disable key repeating in the menus and console
   on Linux.
 - Added support for zip/pk3 files with LZMA and bzip2 compression to ZDoom.
diff --git a/src/m_options.cpp b/src/m_options.cpp
index 72fb5a8b1..1372b7331 100644
--- a/src/m_options.cpp
+++ b/src/m_options.cpp
@@ -1218,6 +1218,7 @@ static valueenum_t Outputs[] =
 #elif defined(unix)
 	{ "OSS",			"OSS" },
 	{ "ALSA",			"ALSA" },
+	{ "SDL",			"SDL" },
 	{ "ESD",			"ESD" },
 #elif defined(__APPLE__)
 	{ "Sound Manager",	"Sound Manager" },
diff --git a/src/sound/fmodsound.cpp b/src/sound/fmodsound.cpp
index 298dc3ead..c03bfe0aa 100644
--- a/src/sound/fmodsound.cpp
+++ b/src/sound/fmodsound.cpp
@@ -54,6 +54,7 @@ extern HWND Window;
 #include "v_text.h"
 #include "v_video.h"
 #include "v_palette.h"
+#include "cmdlib.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -159,6 +160,7 @@ static const FEnumList OutputNames[] =
 	{ "OSS",					FMOD_OUTPUTTYPE_OSS },
 	{ "ALSA",					FMOD_OUTPUTTYPE_ALSA },
 	{ "ESD",					FMOD_OUTPUTTYPE_ESD },
+	{ "SDL",					666 },
 
 	// Mac
 	{ "Sound Manager",			FMOD_OUTPUTTYPE_SOUNDMANAGER },
@@ -612,6 +614,7 @@ bool FMODSoundRenderer::Init()
 	ChannelGroupTargetUnit = NULL;
 	SfxReverbHooked = false;
 	SfxReverbPlaceholder = NULL;
+	OutputPlugin = 0;
 
 	Printf("I_InitSound: Initializing FMOD\n");
 
@@ -692,11 +695,28 @@ bool FMODSoundRenderer::Init()
 	}
 #endif
 
+#ifndef _WIN32
+	// Try to load SDL output plugin
+	result = Sys->setPluginPath(progdir);	// Should we really look for it in the program directory?
+	result = Sys->loadPlugin("liboutput_sdl.so", &OutputPlugin);
+	if (result != FMOD_OK)
+	{
+		OutputPlugin = 0;
+	}
+#endif
+
 	// Set the user specified output mode.
 	eval = Enum_NumForName(OutputNames, snd_output);
 	if (eval >= 0)
 	{
-		result = Sys->setOutput(FMOD_OUTPUTTYPE(eval));
+		if (eval == 666 && OutputPlugin != 0)
+		{
+			result = Sys->setOutputByPlugin(OutputPlugin);
+		}
+		else
+		{
+			result = Sys->setOutput(FMOD_OUTPUTTYPE(eval));
+		}
 		if (result != FMOD_OK)
 		{
 			Printf(TEXTCOLOR_BLUE"Setting output type '%s' failed. Using default instead. (Error %d)\n", *snd_output, result);
@@ -704,7 +724,7 @@ bool FMODSoundRenderer::Init()
 			Sys->setOutput(FMOD_OUTPUTTYPE_AUTODETECT);
 		}
 	}
-
+	
 	result = Sys->getNumDrivers(&driver);
 #ifdef unix
 	if (result == FMOD_OK)
@@ -1083,6 +1103,11 @@ void FMODSoundRenderer::Shutdown()
 		}
 
 		Sys->close();
+		if (OutputPlugin != 0)
+		{
+			Sys->unloadPlugin(OutputPlugin);
+			OutputPlugin = 0;
+		}
 		Sys->release();
 		Sys = NULL;
 	}
diff --git a/src/sound/fmodsound.h b/src/sound/fmodsound.h
index c6f949299..e26ec44b5 100644
--- a/src/sound/fmodsound.h
+++ b/src/sound/fmodsound.h
@@ -98,6 +98,7 @@ private:
 	FMOD::DSP *SfxReverbPlaceholder;
 	bool SfxReverbHooked;
 	float LastWaterLP;
+	unsigned int OutputPlugin;
 
 	// Just for snd_status display
 	int Driver_MinFrequency;