Imported existing code

indra/llaudio/CMakeLists.txt

@@ -0,0 +1,95 @@
+# -*- cmake -*-
+
+project(llaudio)
+
+include(00-Common)
+include(Audio)
+include(LLAudio)
+include(FMOD)
+include(OPENAL)
+include(LLCommon)
+include(LLMath)
+include(LLMessage)
+include(LLVFS)
+
+include_directories(
+    ${LLAUDIO_INCLUDE_DIRS}
+    ${FMOD_INCLUDE_DIR}
+    ${LLCOMMON_INCLUDE_DIRS}
+    ${LLMATH_INCLUDE_DIRS}
+    ${LLMESSAGE_INCLUDE_DIRS}
+    ${LLVFS_INCLUDE_DIRS}
+    ${OGG_INCLUDE_DIRS}
+    ${VORBISENC_INCLUDE_DIRS}
+    ${VORBISFILE_INCLUDE_DIRS}
+    ${VORBIS_INCLUDE_DIRS}
+    ${OPENAL_LIB_INCLUDE_DIRS}
+    ${FREEAULT_LIB_INCLUDE_DIRS}
+    )
+
+set(llaudio_SOURCE_FILES
+    llaudioengine.cpp
+    lllistener.cpp
+    llaudiodecodemgr.cpp
+    llvorbisdecode.cpp
+    llvorbisencode.cpp
+    )
+
+set(llaudio_HEADER_FILES
+    CMakeLists.txt
+
+    llaudioengine.h
+    lllistener.h
+    llaudiodecodemgr.h
+    llvorbisdecode.h
+    llvorbisencode.h
+    llwindgen.h
+    )
+
+if (FMOD)
+    list(APPEND llaudio_SOURCE_FILES
+         llaudioengine_fmod.cpp
+         lllistener_fmod.cpp
+         llstreamingaudio_fmod.cpp
+         )
+
+    list(APPEND llaudio_HEADER_FILES
+         llaudioengine_fmod.h
+         lllistener_fmod.h
+         llstreamingaudio_fmod.h
+         )
+
+    if (LINUX)
+      if (${CXX_VERSION} MATCHES "4.[23]")
+        set_source_files_properties(llaudioengine_fmod.cpp
+                                    COMPILE_FLAGS -Wno-error=write-strings)
+      endif (${CXX_VERSION} MATCHES "4.[23]")
+    endif (LINUX)
+endif (FMOD)
+
+if (OPENAL)
+  list(APPEND llaudio_SOURCE_FILES
+    llaudioengine_openal.cpp
+    lllistener_openal.cpp
+    )
+  
+  list(APPEND llaudio_HEADER_FILES
+    llaudioengine_openal.h
+    lllistener_openal.h
+    )
+endif (OPENAL)
+
+set_source_files_properties(${llaudio_HEADER_FILES}
+                            PROPERTIES HEADER_FILE_ONLY TRUE)
+
+list(APPEND llaudio_SOURCE_FILES ${llaudio_HEADER_FILES})
+
+add_library (llaudio ${llaudio_SOURCE_FILES})
+add_dependencies(llaudio prepare)
+target_link_libraries(
+    llaudio
+    ${VORBISENC_LIBRARIES}
+    ${VORBISFILE_LIBRARIES}
+    ${VORBIS_LIBRARIES}
+    ${OGG_LIBRARIES}
+    )

indra/llaudio/llaudiodecodemgr.cpp

@@ -0,0 +1,672 @@
+/** 
+ * @file llaudiodecodemgr.cpp
+ *
+ * $LicenseInfo:firstyear=2003&license=viewergpl$
+ * 
+ * Copyright (c) 2003-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llaudiodecodemgr.h"
+
+#include "llvorbisdecode.h"
+#include "llaudioengine.h"
+#include "lllfsthread.h"
+#include "llvfile.h"
+#include "llstring.h"
+#include "lldir.h"
+#include "llendianswizzle.h"
+#include "llassetstorage.h"
+
+#include "vorbis/codec.h"
+#include "vorbis/vorbisfile.h"
+#include "llvorbisencode.h"
+
+extern LLAudioEngine *gAudiop;
+
+LLAudioDecodeMgr *gAudioDecodeMgrp = NULL;
+
+static const S32 WAV_HEADER_SIZE = 44;
+
+
+//////////////////////////////////////////////////////////////////////////////
+
+
+class LLVorbisDecodeState : public LLRefCount
+{
+public:
+	class WriteResponder : public LLLFSThread::Responder
+	{
+	public:
+		WriteResponder(LLVorbisDecodeState* decoder) : mDecoder(decoder) {}
+		~WriteResponder() {}
+		void completed(S32 bytes)
+		{
+			mDecoder->ioComplete(bytes);
+		}
+		LLPointer<LLVorbisDecodeState> mDecoder;
+	};
+	
+	LLVorbisDecodeState(const LLUUID &uuid, const std::string &out_filename);
+
+	BOOL initDecode();
+	BOOL decodeSection(); // Return TRUE if done.
+	BOOL finishDecode();
+
+	void flushBadFile();
+
+	void ioComplete(S32 bytes)			{ mBytesRead = bytes; }
+	BOOL isValid() const				{ return mValid; }
+	BOOL isDone() const					{ return mDone; }
+	const LLUUID &getUUID() const		{ return mUUID; }
+
+protected:
+	virtual ~LLVorbisDecodeState();
+
+	BOOL mValid;
+	BOOL mDone;
+	LLAtomicS32 mBytesRead;
+	LLUUID mUUID;
+
+	std::vector<U8> mWAVBuffer;
+#if !defined(USE_WAV_VFILE)
+	std::string mOutFilename;
+	LLLFSThread::handle_t mFileHandle;
+#endif
+	
+	LLVFile *mInFilep;
+	OggVorbis_File mVF;
+	S32 mCurrentSection;
+};
+
+size_t vfs_read(void *ptr, size_t size, size_t nmemb, void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	if (file->read((U8*)ptr, (S32)(size * nmemb)))	/*Flawfinder: ignore*/
+	{
+		S32 read = file->getLastBytesRead();
+		return  read / size;	/*Flawfinder: ignore*/
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+int vfs_seek(void *datasource, ogg_int64_t offset, int whence)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	// vfs has 31-bit files
+	if (offset > S32_MAX)
+	{
+		return -1;
+	}
+
+	S32 origin;
+	switch (whence) {
+	case SEEK_SET:
+		origin = 0;
+		break;
+	case SEEK_END:
+		origin = file->getSize();
+		break;
+	case SEEK_CUR:
+		origin = -1;
+		break;
+	default:
+		llerrs << "Invalid whence argument to vfs_seek" << llendl;
+		return -1;
+	}
+
+	if (file->seek((S32)offset, origin))
+	{
+		return 0;
+	}
+	else
+	{
+		return -1;
+	}
+}
+
+int vfs_close (void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+	delete file;
+	return 0;
+}
+
+long vfs_tell (void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+	return file->tell();
+}
+
+LLVorbisDecodeState::LLVorbisDecodeState(const LLUUID &uuid, const std::string &out_filename)
+{
+	mDone = FALSE;
+	mValid = FALSE;
+	mBytesRead = -1;
+	mUUID = uuid;
+	mInFilep = NULL;
+	mCurrentSection = 0;
+#if !defined(USE_WAV_VFILE)
+	mOutFilename = out_filename;
+	mFileHandle = LLLFSThread::nullHandle();
+#endif
+	// No default value for mVF, it's an ogg structure?
+}
+
+LLVorbisDecodeState::~LLVorbisDecodeState()
+{
+	if (!mDone)
+	{
+		delete mInFilep;
+		mInFilep = NULL;
+	}
+}
+
+
+BOOL LLVorbisDecodeState::initDecode()
+{
+	ov_callbacks vfs_callbacks;
+	vfs_callbacks.read_func = vfs_read;
+	vfs_callbacks.seek_func = vfs_seek;
+	vfs_callbacks.close_func = vfs_close;
+	vfs_callbacks.tell_func = vfs_tell;
+
+	//llinfos << "Initing decode from vfile: " << mUUID << llendl;
+
+	mInFilep = new LLVFile(gVFS, mUUID, LLAssetType::AT_SOUND);
+	if (!mInFilep || !mInFilep->getSize())
+	{
+		llwarns << "unable to open vorbis source vfile for reading" << llendl;
+		delete mInFilep;
+		mInFilep = NULL;
+		return FALSE;
+	}
+
+	int r = ov_open_callbacks(mInFilep, &mVF, NULL, 0, vfs_callbacks);
+	if(r < 0) 
+	{
+		llwarns << r << " Input to vorbis decode does not appear to be an Ogg bitstream: " << mUUID << llendl;
+		return(FALSE);
+	}
+	
+	S32 sample_count = ov_pcm_total(&mVF, -1);
+	size_t size_guess = (size_t)sample_count;
+	vorbis_info* vi = ov_info(&mVF, -1);
+	size_guess *= vi->channels;
+	size_guess *= 2;
+	size_guess += 2048;
+	
+	bool abort_decode = false;
+	
+	if( vi->channels < 1 || vi->channels > LLVORBIS_CLIP_MAX_CHANNELS )
+	{
+		abort_decode = true;
+		llwarns << "Bad channel count: " << vi->channels << llendl;
+	}
+	
+	if( (size_t)sample_count > LLVORBIS_CLIP_REJECT_SAMPLES )
+	{
+		abort_decode = true;
+		llwarns << "Illegal sample count: " << sample_count << llendl;
+	}
+	
+	if( size_guess > LLVORBIS_CLIP_REJECT_SIZE )
+	{
+		abort_decode = true;
+		llwarns << "Illegal sample size: " << size_guess << llendl;
+	}
+	
+	if( abort_decode )
+	{
+		llwarns << "Canceling initDecode. Bad asset: " << mUUID << llendl;
+		llwarns << "Bad asset encoded by: " << ov_comment(&mVF,-1)->vendor << llendl;
+		delete mInFilep;
+		mInFilep = NULL;
+		return FALSE;
+	}
+	
+	mWAVBuffer.reserve(size_guess);
+	mWAVBuffer.resize(WAV_HEADER_SIZE);
+
+	{
+		// write the .wav format header
+		//"RIFF"
+		mWAVBuffer[0] = 0x52;
+		mWAVBuffer[1] = 0x49;
+		mWAVBuffer[2] = 0x46;
+		mWAVBuffer[3] = 0x46;
+
+		// length = datalen + 36 (to be filled in later)
+		mWAVBuffer[4] = 0x00;
+		mWAVBuffer[5] = 0x00;
+		mWAVBuffer[6] = 0x00;
+		mWAVBuffer[7] = 0x00;
+
+		//"WAVE"
+		mWAVBuffer[8] = 0x57;
+		mWAVBuffer[9] = 0x41;
+		mWAVBuffer[10] = 0x56;
+		mWAVBuffer[11] = 0x45;
+
+		// "fmt "
+		mWAVBuffer[12] = 0x66;
+		mWAVBuffer[13] = 0x6D;
+		mWAVBuffer[14] = 0x74;
+		mWAVBuffer[15] = 0x20;
+
+		// chunk size = 16
+		mWAVBuffer[16] = 0x10;
+		mWAVBuffer[17] = 0x00;
+		mWAVBuffer[18] = 0x00;
+		mWAVBuffer[19] = 0x00;
+
+		// format (1 = PCM)
+		mWAVBuffer[20] = 0x01;
+		mWAVBuffer[21] = 0x00;
+
+		// number of channels
+		mWAVBuffer[22] = 0x01;
+		mWAVBuffer[23] = 0x00;
+
+		// samples per second
+		mWAVBuffer[24] = 0x44;
+		mWAVBuffer[25] = 0xAC;
+		mWAVBuffer[26] = 0x00;
+		mWAVBuffer[27] = 0x00;
+
+		// average bytes per second
+		mWAVBuffer[28] = 0x88;
+		mWAVBuffer[29] = 0x58;
+		mWAVBuffer[30] = 0x01;
+		mWAVBuffer[31] = 0x00;
+
+		// bytes to output at a single time
+		mWAVBuffer[32] = 0x02;
+		mWAVBuffer[33] = 0x00;
+		 
+		// 16 bits per sample
+		mWAVBuffer[34] = 0x10;
+		mWAVBuffer[35] = 0x00;
+
+		// "data"
+		mWAVBuffer[36] = 0x64;
+		mWAVBuffer[37] = 0x61;
+		mWAVBuffer[38] = 0x74;
+		mWAVBuffer[39] = 0x61;
+
+		// these are the length of the data chunk, to be filled in later
+		mWAVBuffer[40] = 0x00;
+		mWAVBuffer[41] = 0x00;
+		mWAVBuffer[42] = 0x00;
+		mWAVBuffer[43] = 0x00;
+	}
+	
+	//{
+		//char **ptr=ov_comment(&mVF,-1)->user_comments;
+//		vorbis_info *vi=ov_info(&vf,-1);
+		//while(*ptr){
+		//	fprintf(stderr,"%s\n",*ptr);
+		//	++ptr;
+		//}
+//    fprintf(stderr,"\nBitstream is %d channel, %ldHz\n",vi->channels,vi->rate);
+//    fprintf(stderr,"\nDecoded length: %ld samples\n", (long)ov_pcm_total(&vf,-1));
+//    fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor);
+	//}
+	return TRUE;
+}
+
+BOOL LLVorbisDecodeState::decodeSection()
+{
+	if (!mInFilep)
+	{
+		llwarns << "No VFS file to decode in vorbis!" << llendl;
+		return TRUE;
+	}
+	if (mDone)
+	{
+// 		llwarns << "Already done with decode, aborting!" << llendl;
+		return TRUE;
+	}
+	char pcmout[4096];	/*Flawfinder: ignore*/
+
+	BOOL eof = FALSE;
+	long ret=ov_read(&mVF, pcmout, sizeof(pcmout), 0, 2, 1, &mCurrentSection);
+	if (ret == 0)
+	{
+		/* EOF */
+		eof = TRUE;
+		mDone = TRUE;
+		mValid = TRUE;
+//			llinfos << "Vorbis EOF" << llendl;
+	}
+	else if (ret < 0)
+	{
+		/* error in the stream.  Not a problem, just reporting it in
+		   case we (the app) cares.  In this case, we don't. */
+
+		llwarns << "BAD vorbis decode in decodeSection." << llendl;
+
+		mValid = FALSE;
+		mDone = TRUE;
+		// We're done, return TRUE.
+		return TRUE;
+	}
+	else
+	{
+//			llinfos << "Vorbis read " << ret << "bytes" << llendl;
+		/* we don't bother dealing with sample rate changes, etc, but.
+		   you'll have to*/
+		std::copy(pcmout, pcmout+ret, std::back_inserter(mWAVBuffer));
+	}
+	return eof;
+}
+
+BOOL LLVorbisDecodeState::finishDecode()
+{
+	if (!isValid())
+	{
+		llwarns << "Bogus vorbis decode state for " << getUUID() << ", aborting!" << llendl;
+		return TRUE; // We've finished
+	}
+
+#if !defined(USE_WAV_VFILE)	
+	if (mFileHandle == LLLFSThread::nullHandle())
+#endif
+	{
+		ov_clear(&mVF);
+  
+		// write "data" chunk length, in little-endian format
+		S32 data_length = mWAVBuffer.size() - WAV_HEADER_SIZE;
+		mWAVBuffer[40] = (data_length) & 0x000000FF;
+		mWAVBuffer[41] = (data_length >> 8) & 0x000000FF;
+		mWAVBuffer[42] = (data_length >> 16) & 0x000000FF;
+		mWAVBuffer[43] = (data_length >> 24) & 0x000000FF;
+		// write overall "RIFF" length, in little-endian format
+		data_length += 36;
+		mWAVBuffer[4] = (data_length) & 0x000000FF;
+		mWAVBuffer[5] = (data_length >> 8) & 0x000000FF;
+		mWAVBuffer[6] = (data_length >> 16) & 0x000000FF;
+		mWAVBuffer[7] = (data_length >> 24) & 0x000000FF;
+
+		//
+		// FUDGECAKES!!! Vorbis encode/decode messes up loop point transitions (pop)
+		// do a cheap-and-cheesy crossfade 
+		//
+		{
+			S16 *samplep;
+			S32 i;
+			S32 fade_length;
+			char pcmout[4096];		/*Flawfinder: ignore*/ 	
+
+			fade_length = llmin((S32)128,(S32)(data_length-36)/8);			
+			if((S32)mWAVBuffer.size() >= (WAV_HEADER_SIZE + 2* fade_length))
+			{
+				memcpy(pcmout, &mWAVBuffer[WAV_HEADER_SIZE], (2 * fade_length));	/*Flawfinder: ignore*/
+			}
+			llendianswizzle(&pcmout, 2, fade_length);
+	
+			samplep = (S16 *)pcmout;
+			for (i = 0 ;i < fade_length; i++)
+			{
+				*samplep = llfloor((F32)*samplep * ((F32)i/(F32)fade_length));
+				samplep++;
+			}
+
+			llendianswizzle(&pcmout, 2, fade_length);			
+			if((WAV_HEADER_SIZE+(2 * fade_length)) < (S32)mWAVBuffer.size())
+			{
+				memcpy(&mWAVBuffer[WAV_HEADER_SIZE], pcmout, (2 * fade_length));	/*Flawfinder: ignore*/
+			}
+			S32 near_end = mWAVBuffer.size() - (2 * fade_length);
+			if ((S32)mWAVBuffer.size() >= ( near_end + 2* fade_length))
+			{
+				memcpy(pcmout, &mWAVBuffer[near_end], (2 * fade_length));	/*Flawfinder: ignore*/
+			}
+			llendianswizzle(&pcmout, 2, fade_length);
+
+			samplep = (S16 *)pcmout;
+			for (i = fade_length-1 ; i >=  0; i--)
+			{
+				*samplep = llfloor((F32)*samplep * ((F32)i/(F32)fade_length));
+				samplep++;
+			}
+	
+			llendianswizzle(&pcmout, 2, fade_length);			
+			if (near_end + (2 * fade_length) < (S32)mWAVBuffer.size())
+			{
+				memcpy(&mWAVBuffer[near_end], pcmout, (2 * fade_length));/*Flawfinder: ignore*/
+			}
+		}
+
+		if (36 == data_length)
+		{
+			llwarns << "BAD Vorbis decode in finishDecode!" << llendl;
+			mValid = FALSE;
+			return TRUE; // we've finished
+		}
+#if !defined(USE_WAV_VFILE)
+		mBytesRead = -1;
+		mFileHandle = LLLFSThread::sLocal->write(mOutFilename, &mWAVBuffer[0], 0, mWAVBuffer.size(),
+							 new WriteResponder(this));
+#endif
+	}
+
+	if (mFileHandle != LLLFSThread::nullHandle())
+	{
+		if (mBytesRead >= 0)
+		{
+			if (mBytesRead == 0)
+			{
+				llwarns << "Unable to write file in LLVorbisDecodeState::finishDecode" << llendl;
+				mValid = FALSE;
+				return TRUE; // we've finished
+			}
+		}
+		else
+		{
+			return FALSE; // not done
+		}
+	}
+	
+	mDone = TRUE;
+
+#if defined(USE_WAV_VFILE)
+	// write the data.
+	LLVFile output(gVFS, mUUID, LLAssetType::AT_SOUND_WAV);
+	output.write(&mWAVBuffer[0], mWAVBuffer.size());
+#endif
+	//llinfos << "Finished decode for " << getUUID() << llendl;
+
+	return TRUE;
+}
+
+void LLVorbisDecodeState::flushBadFile()
+{
+	if (mInFilep)
+	{
+		llwarns << "Flushing bad vorbis file from VFS for " << mUUID << llendl;
+		mInFilep->remove();
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+class LLAudioDecodeMgr::Impl
+{
+	friend class LLAudioDecodeMgr;
+public:
+	Impl() {};
+	~Impl() {};
+
+	void processQueue(const F32 num_secs = 0.005);
+
+protected:
+	LLLinkedQueue<LLUUID> mDecodeQueue;
+	LLPointer<LLVorbisDecodeState> mCurrentDecodep;
+};
+
+
+void LLAudioDecodeMgr::Impl::processQueue(const F32 num_secs)
+{
+	LLUUID uuid;
+
+	LLTimer decode_timer;
+
+	BOOL done = FALSE;
+	while (!done)
+	{
+		if (mCurrentDecodep)
+		{
+			BOOL res;
+
+			// Decode in a loop until we're done or have run out of time.
+			while(!(res = mCurrentDecodep->decodeSection()) && (decode_timer.getElapsedTimeF32() < num_secs))
+			{
+				// decodeSection does all of the work above
+			}
+
+			if (mCurrentDecodep->isDone() && !mCurrentDecodep->isValid())
+			{
+				// We had an error when decoding, abort.
+				llwarns << mCurrentDecodep->getUUID() << " has invalid vorbis data, aborting decode" << llendl;
+				mCurrentDecodep->flushBadFile();
+				LLAudioData *adp = gAudiop->getAudioData(mCurrentDecodep->getUUID());
+				adp->setHasValidData(FALSE);
+				mCurrentDecodep = NULL;
+				done = TRUE;
+			}
+
+			if (!res)
+			{
+				// We've used up out time slice, bail...
+				done = TRUE;
+			}
+			else if (mCurrentDecodep)
+			{
+				if (mCurrentDecodep->finishDecode())
+				{
+					// We finished!
+					if (mCurrentDecodep->isValid() && mCurrentDecodep->isDone())
+					{
+						LLAudioData *adp = gAudiop->getAudioData(mCurrentDecodep->getUUID());
+						adp->setHasDecodedData(TRUE);
+						adp->setHasValidData(TRUE);
+
+						// At this point, we could see if anyone needs this sound immediately, but
+						// I'm not sure that there's a reason to - we need to poll all of the playing
+						// sounds anyway.
+						//llinfos << "Finished the vorbis decode, now what?" << llendl;
+					}
+					else
+					{
+						llinfos << "Vorbis decode failed!!!" << llendl;
+					}
+					mCurrentDecodep = NULL;
+				}
+				done = TRUE; // done for now
+			}
+		}
+
+		if (!done)
+		{
+			if (!mDecodeQueue.getLength())
+			{
+				// Nothing else on the queue.
+				done = TRUE;
+			}
+			else
+			{
+				LLUUID uuid;
+				mDecodeQueue.pop(uuid);
+				if (gAudiop->hasDecodedFile(uuid))
+				{
+					// This file has already been decoded, don't decode it again.
+					continue;
+				}
+
+				lldebugs << "Decoding " << uuid << " from audio queue!" << llendl;
+
+				std::string uuid_str;
+				std::string d_path;
+
+				LLTimer timer;
+				timer.reset();
+
+				uuid.toString(uuid_str);
+				d_path = gDirUtilp->getExpandedFilename(LL_PATH_CACHE,uuid_str) + ".dsf";
+
+				mCurrentDecodep = new LLVorbisDecodeState(uuid, d_path);
+				if (!mCurrentDecodep->initDecode())
+				{
+					mCurrentDecodep = NULL;
+				}
+			}
+		}
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+LLAudioDecodeMgr::LLAudioDecodeMgr()
+{
+	mImpl = new Impl;
+}
+
+LLAudioDecodeMgr::~LLAudioDecodeMgr()
+{
+	delete mImpl;
+}
+
+void LLAudioDecodeMgr::processQueue(const F32 num_secs)
+{
+	mImpl->processQueue(num_secs);
+}
+
+BOOL LLAudioDecodeMgr::addDecodeRequest(const LLUUID &uuid)
+{
+	if (gAudiop->hasDecodedFile(uuid))
+	{
+		// Already have a decoded version, don't need to decode it.
+		return TRUE;
+	}
+
+	if (gAssetStorage->hasLocalAsset(uuid, LLAssetType::AT_SOUND))
+	{
+		// Just put it on the decode queue.
+		mImpl->mDecodeQueue.push(uuid);
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+

indra/llaudio/llaudiodecodemgr.h

@@ -0,0 +1,63 @@
+/** 
+ * @file llaudiodecodemgr.h
+ *
+ * $LicenseInfo:firstyear=2003&license=viewergpl$
+ * 
+ * Copyright (c) 2003-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLAUDIODECODEMGR_H
+#define LL_LLAUDIODECODEMG_H
+
+#include "stdtypes.h"
+
+#include "lllinkedqueue.h"
+#include "lluuid.h"
+
+#include "llassettype.h"
+#include "llframetimer.h"
+
+class LLVFS;
+class LLVorbisDecodeState;
+
+class LLAudioDecodeMgr
+{
+public:
+	LLAudioDecodeMgr();
+	~LLAudioDecodeMgr();
+
+	void processQueue(const F32 num_secs = 0.005);
+	BOOL addDecodeRequest(const LLUUID &uuid);
+	void addAudioRequest(const LLUUID &uuid);
+	
+protected:
+	class Impl;
+	Impl* mImpl;
+};
+
+extern LLAudioDecodeMgr *gAudioDecodeMgrp;
+
+#endif

indra/llaudio/llaudioengine.h

@@ -0,0 +1,455 @@
+/** 
+ * @file audioengine.h
+ * @brief Definition of LLAudioEngine base class abstracting the audio support
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+
+#ifndef LL_AUDIOENGINE_H
+#define LL_AUDIOENGINE_H
+
+#include <list>
+#include <map>
+
+#include "v3math.h"
+#include "v3dmath.h"
+#include "lltimer.h"
+#include "lluuid.h"
+#include "llframetimer.h"
+#include "llassettype.h"
+
+#include "lllistener.h"
+
+const F32 LL_WIND_UPDATE_INTERVAL = 0.1f;
+const F32 LL_ROLLOFF_MULTIPLIER_UNDER_WATER = 5.f;			//  How much sounds are weaker under water
+const F32 LL_WIND_UNDERWATER_CENTER_FREQ = 20.f;
+
+const F32 ATTACHED_OBJECT_TIMEOUT = 5.0f;
+const F32 DEFAULT_MIN_DISTANCE = 2.0f;
+
+#define MAX_CHANNELS 30
+#define MAX_BUFFERS 40	// Some extra for preloading, maybe?
+
+// This define is intended to allow us to switch from os based wav
+// file loading to vfs based wav file loading. The problem is that I
+// am unconvinced that the LLWaveFile works for loading sounds from
+// memory. So, until that is fixed up, changed, whatever, this remains
+// undefined.
+//#define USE_WAV_VFILE
+
+class LLVFS;
+
+class LLAudioSource;
+class LLAudioData;
+class LLAudioChannel;
+class LLAudioChannelOpenAL;
+class LLAudioBuffer;
+class LLStreamingAudioInterface;
+
+
+//
+//  LLAudioEngine definition
+//
+
+class LLAudioEngine 
+{
+	friend class LLAudioChannelOpenAL; // bleh. channel needs some listener methods.
+	
+public:
+	enum LLAudioType
+	{
+		AUDIO_TYPE_NONE    = 0,
+		AUDIO_TYPE_SFX     = 1,
+		AUDIO_TYPE_UI      = 2,
+		AUDIO_TYPE_AMBIENT = 3,
+		AUDIO_TYPE_COUNT   = 4 // last
+	};
+	
+	LLAudioEngine();
+	virtual ~LLAudioEngine();
+
+	// initialization/startup/shutdown
+	virtual bool init(const S32 num_channels, void *userdata);
+	virtual std::string getDriverName(bool verbose) = 0;
+	virtual void shutdown();
+
+	// Used by the mechanics of the engine
+	//virtual void processQueue(const LLUUID &sound_guid);
+	virtual void setListener(LLVector3 pos,LLVector3 vel,LLVector3 up,LLVector3 at);
+	virtual void updateWind(LLVector3 direction, F32 camera_height_above_water) = 0;
+	virtual void idle(F32 max_decode_time = 0.f);
+	virtual void updateChannels();
+
+	//
+	// "End user" functionality
+	//
+	virtual bool isWindEnabled();
+	virtual void enableWind(bool state_b);
+
+	// Use these for temporarily muting the audio system.
+	// Does not change buffers, initialization, etc. but
+	// stops playing new sounds.
+	void setMuted(bool muted);
+	bool getMuted() const { return mMuted; }
+#ifdef USE_PLUGIN_MEDIA
+	LLPluginClassMedia* initializeMedia(const std::string& media_type);
+#endif
+	F32 getMasterGain();
+	void setMasterGain(F32 gain);
+
+	F32 getSecondaryGain(S32 type);
+	void setSecondaryGain(S32 type, F32 gain);
+
+	F32 getInternetStreamGain();
+
+	virtual void setDopplerFactor(F32 factor);
+	virtual F32 getDopplerFactor();
+	virtual void setRolloffFactor(F32 factor);
+	virtual F32 getRolloffFactor();
+	virtual void setMaxWindGain(F32 gain);
+
+
+	// Methods actually related to setting up and removing sounds
+	// Owner ID is the owner of the object making the request
+	void triggerSound(const LLUUID &sound_id, const LLUUID& owner_id, const F32 gain,
+					  const S32 type = LLAudioEngine::AUDIO_TYPE_NONE,
+					  const LLVector3d &pos_global = LLVector3d::zero);
+	bool preloadSound(const LLUUID &id);
+
+	void addAudioSource(LLAudioSource *asp);
+	void cleanupAudioSource(LLAudioSource *asp);
+
+	LLAudioSource *findAudioSource(const LLUUID &source_id);
+	LLAudioData *getAudioData(const LLUUID &audio_uuid);
+
+	// Internet stream implementation manipulation
+	LLStreamingAudioInterface *getStreamingAudioImpl();
+	void setStreamingAudioImpl(LLStreamingAudioInterface *impl);
+	// Internet stream methods - these will call down into the *mStreamingAudioImpl if it exists
+	void startInternetStream(const std::string& url);
+	void stopInternetStream();
+	void pauseInternetStream(int pause);
+	void updateInternetStream(); // expected to be called often
+	int isInternetStreamPlaying();
+	// use a value from 0.0 to 1.0, inclusive
+	void setInternetStreamGain(F32 vol);
+	std::string getInternetStreamURL();
+	
+	// For debugging usage
+	virtual LLVector3 getListenerPos();
+
+	LLAudioBuffer *getFreeBuffer(); // Get a free buffer, or flush an existing one if you have to.
+	LLAudioChannel *getFreeChannel(const F32 priority); // Get a free channel or flush an existing one if your priority is higher
+	void cleanupBuffer(LLAudioBuffer *bufferp);
+
+	bool hasDecodedFile(const LLUUID &uuid);
+	bool hasLocalFile(const LLUUID &uuid);
+
+	bool updateBufferForData(LLAudioData *adp, const LLUUID &audio_uuid = LLUUID::null);
+
+
+	// Asset callback when we're retrieved a sound from the asset server.
+	void startNextTransfer();
+	static void assetCallback(LLVFS *vfs, const LLUUID &uuid, LLAssetType::EType type, void *user_data, S32 result_code, LLExtStat ext_status);
+
+	friend class LLPipeline; // For debugging
+public:
+	F32 mMaxWindGain; // Hack.  Public to set before fade in?
+
+protected:
+	virtual LLAudioBuffer *createBuffer() = 0;
+	virtual LLAudioChannel *createChannel() = 0;
+
+	virtual bool initWind() = 0;
+	virtual void cleanupWind() = 0;
+	virtual void setInternalGain(F32 gain) = 0;
+
+	void commitDeferredChanges();
+
+	virtual void allocateListener() = 0;
+
+
+	// listener methods
+	virtual void setListenerPos(LLVector3 vec);
+	virtual void setListenerVelocity(LLVector3 vec);
+	virtual void orientListener(LLVector3 up, LLVector3 at);
+	virtual void translateListener(LLVector3 vec);
+
+
+	F64 mapWindVecToGain(LLVector3 wind_vec);
+	F64 mapWindVecToPitch(LLVector3 wind_vec);
+	F64 mapWindVecToPan(LLVector3 wind_vec);
+
+protected:
+	LLListener *mListenerp;
+
+	bool mMuted;
+	void* mUserData;
+
+	S32 mLastStatus;
+	
+	S32 mNumChannels;
+	bool mEnableWind;
+
+	LLUUID mCurrentTransfer; // Audio file currently being transferred by the system
+	LLFrameTimer mCurrentTransferTimer;
+
+	// A list of all audio sources that are known to the viewer at this time.
+	// This is most likely a superset of the ones that we actually have audio
+	// data for, or are playing back.
+	typedef std::map<LLUUID, LLAudioSource *> source_map;
+	typedef std::map<LLUUID, LLAudioData *> data_map;
+
+	source_map mAllSources;
+	data_map mAllData;
+
+	LLAudioChannel *mChannels[MAX_CHANNELS];
+
+	// Buffers needs to change into a different data structure, as the number of buffers
+	// that we have active should be limited by RAM usage, not count.
+	LLAudioBuffer *mBuffers[MAX_BUFFERS];
+	
+	F32 mMasterGain;
+	F32 mInternalGain;			// Actual gain set; either mMasterGain or 0 when mMuted is true.
+	F32 mSecondaryGain[AUDIO_TYPE_COUNT];
+
+	F32 mNextWindUpdate;
+
+	LLFrameTimer mWindUpdateTimer;
+
+private:
+	void setDefaults();
+	LLStreamingAudioInterface *mStreamingAudioImpl;
+};
+
+
+
+
+//
+// Standard audio source.  Can be derived from for special sources, such as those attached to objects.
+//
+
+
+class LLAudioSource
+{
+public:
+	// owner_id is the id of the agent responsible for making this sound
+	// play, for example, the owner of the object currently playing it
+	LLAudioSource(const LLUUID &id, const LLUUID& owner_id, const F32 gain, const S32 type = LLAudioEngine::AUDIO_TYPE_NONE);
+	virtual ~LLAudioSource();
+
+	virtual void update();						// Update this audio source
+	void updatePriority();
+
+	void preload(const LLUUID &audio_id); // Only used for preloading UI sounds, now.
+
+	void addAudioData(LLAudioData *adp, bool set_current = TRUE);
+
+	void setAmbient(const bool ambient)						{ mAmbient = ambient; }
+	bool isAmbient() const									{ return mAmbient; }
+
+	void setLoop(const bool loop)							{ mLoop = loop; }
+	bool isLoop() const										{ return mLoop; }
+
+	void setSyncMaster(const bool master)					{ mSyncMaster = master; }
+	bool isSyncMaster() const								{ return mSyncMaster; }
+
+	void setSyncSlave(const bool slave)						{ mSyncSlave = slave; }
+	bool isSyncSlave() const								{ return mSyncSlave; }
+
+	void setQueueSounds(const bool queue)					{ mQueueSounds = queue; }
+	bool isQueueSounds() const								{ return mQueueSounds; }
+
+	void setPlayedOnce(const bool played_once)				{ mPlayedOnce = played_once; }
+
+	void setType(S32 type)                                  { mType = type; }
+	S32 getType()                                           { return mType; }
+
+	void setPositionGlobal(const LLVector3d &position_global)		{ mPositionGlobal = position_global; }
+	LLVector3d getPositionGlobal() const							{ return mPositionGlobal; }
+	LLVector3 getVelocity()	const									{ return mVelocity; }				
+	F32 getPriority() const											{ return mPriority; }
+
+	// Gain should always be clamped between 0 and 1.
+	F32 getGain() const												{ return mGain; }
+	virtual void setGain(const F32 gain)							{ mGain = llclamp(gain, 0.f, 1.f); }
+
+	const LLUUID &getID() const		{ return mID; }
+	bool isDone() const;
+	bool isMuted() const { return mSourceMuted; }
+
+	LLAudioData *getCurrentData();
+	LLAudioData *getQueuedData();
+	LLAudioBuffer *getCurrentBuffer();
+
+	bool setupChannel();
+	bool play(const LLUUID &audio_id);	// Start the audio source playing
+
+	bool hasPendingPreloads() const;	// Has preloads that haven't been done yet
+
+	friend class LLAudioEngine;
+	friend class LLAudioChannel;
+protected:
+	void setChannel(LLAudioChannel *channelp);
+	LLAudioChannel *getChannel() const						{ return mChannelp; }
+
+protected:
+	LLUUID			mID; // The ID of the source is that of the object if it's attached to an object.
+	LLUUID			mOwnerID;	// owner of the object playing the sound
+	F32				mPriority;
+	F32				mGain;
+	bool			mSourceMuted;
+	bool			mAmbient;
+	bool			mLoop;
+	bool			mSyncMaster;
+	bool			mSyncSlave;
+	bool			mQueueSounds;
+	bool			mPlayedOnce;
+	S32             mType;
+	LLVector3d		mPositionGlobal;
+	LLVector3		mVelocity;
+
+	//LLAudioSource	*mSyncMasterp;	// If we're a slave, the source that we're synced to.
+	LLAudioChannel	*mChannelp;		// If we're currently playing back, this is the channel that we're assigned to.
+	LLAudioData		*mCurrentDatap;
+	LLAudioData		*mQueuedDatap;
+
+	typedef std::map<LLUUID, LLAudioData *> data_map;
+	data_map mPreloadMap;
+
+	LLFrameTimer mAgeTimer;
+};
+
+
+
+
+//
+// Generic metadata about a particular piece of audio data.
+// The actual data is handled by the derived LLAudioBuffer classes which are
+// derived for each audio engine.
+//
+
+
+class LLAudioData
+{
+public:
+	LLAudioData(const LLUUID &uuid);
+	bool load();
+
+	LLUUID getID() const				{ return mID; }
+	LLAudioBuffer *getBuffer() const	{ return mBufferp; }
+
+	bool	hasLocalData() const		{ return mHasLocalData; }
+	bool	hasDecodedData() const		{ return mHasDecodedData; }
+	bool	hasValidData() const		{ return mHasValidData; }
+
+	void	setHasLocalData(const bool hld)		{ mHasLocalData = hld; }
+	void	setHasDecodedData(const bool hdd)	{ mHasDecodedData = hdd; }
+	void	setHasValidData(const bool hvd)		{ mHasValidData = hvd; }
+
+	friend class LLAudioEngine; // Severe laziness, bad.
+
+protected:
+	LLUUID mID;
+	LLAudioBuffer *mBufferp;	// If this data is being used by the audio system, a pointer to the buffer will be set here.
+	bool mHasLocalData;
+	bool mHasDecodedData;
+	bool mHasValidData;
+};
+
+
+//
+// Base class for an audio channel, i.e. a channel which is capable of playing back a sound.
+// Management of channels is done generically, methods for actually manipulating the channel
+// are derived for each audio engine.
+//
+
+
+class LLAudioChannel
+{
+public:
+	LLAudioChannel();
+	virtual ~LLAudioChannel();
+
+	virtual void setSource(LLAudioSource *sourcep);
+	LLAudioSource *getSource() const			{ return mCurrentSourcep; }
+
+	void setSecondaryGain(F32 gain)             { mSecondaryGain = gain; }
+	F32 getSecondaryGain()                      { return mSecondaryGain; }
+
+	friend class LLAudioEngine;
+	friend class LLAudioSource;
+protected:
+	virtual void play() = 0;
+	virtual void playSynced(LLAudioChannel *channelp) = 0;
+	virtual void cleanup() = 0;
+	virtual bool isPlaying() = 0;
+	void setWaiting(const bool waiting)			{ mWaiting = waiting; }
+	bool isWaiting() const						{ return mWaiting; }
+
+	virtual bool updateBuffer(); // Check to see if the buffer associated with the source changed, and update if necessary.
+	virtual void update3DPosition() = 0;
+	virtual void updateLoop() = 0; // Update your loop/completion status, for use by queueing/syncing.
+protected:
+	LLAudioSource	*mCurrentSourcep;
+	LLAudioBuffer	*mCurrentBufferp;
+	bool			mLoopedThisFrame;
+	bool			mWaiting;	// Waiting for sync.
+	F32             mSecondaryGain;
+};
+
+
+
+
+// Basically an interface class to the engine-specific implementation
+// of audio data that's ready for playback.
+// Will likely get more complex as we decide to do stuff like real streaming audio.
+
+
+class LLAudioBuffer
+{
+public:
+	virtual ~LLAudioBuffer() {};
+	virtual bool loadWAV(const std::string& filename) = 0;
+	virtual U32 getLength() = 0;
+
+	friend class LLAudioEngine;
+	friend class LLAudioChannel;
+	friend class LLAudioData;
+protected:
+	bool mInUse;
+	LLAudioData *mAudioDatap;
+	LLFrameTimer mLastUseTimer;
+};
+
+
+
+extern LLAudioEngine* gAudiop;
+
+#endif

indra/llaudio/llaudioengine_fmod.cpp

@@ -0,0 +1,784 @@
+/** 
+ * @file audioengine_fmod.cpp
+ * @brief Implementation of LLAudioEngine class abstracting the audio support as a FMOD 3D implementation
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llstreamingaudio.h"
+#include "llstreamingaudio_fmod.h"
+
+#include "llaudioengine_fmod.h"
+#include "lllistener_fmod.h"
+
+#include "llerror.h"
+#include "llmath.h"
+#include "llrand.h"
+
+#include "fmod.h"
+#include "fmod_errors.h"
+#include "lldir.h"
+#include "llapr.h"
+
+#include "sound_ids.h"
+
+
+extern "C" {
+	void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void* userdata);
+}
+
+
+LLAudioEngine_FMOD::LLAudioEngine_FMOD()
+{
+	mInited = false;
+	mWindGen = NULL;
+	mWindDSP = NULL;
+}
+
+
+LLAudioEngine_FMOD::~LLAudioEngine_FMOD()
+{
+}
+
+
+bool LLAudioEngine_FMOD::init(const S32 num_channels, void* userdata)
+{
+	LLAudioEngine::init(num_channels, userdata);
+
+	// Reserve one extra channel for the http stream.
+	if (!FSOUND_SetMinHardwareChannels(num_channels + 1))
+	{
+		LL_WARNS("AppInit") << "FMOD::init[0](), error: " << FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+	}
+
+	LL_DEBUGS("AppInit") << "LLAudioEngine_FMOD::init() initializing FMOD" << LL_ENDL;
+
+	F32 version = FSOUND_GetVersion();
+	if (version < FMOD_VERSION)
+	{
+		LL_WARNS("AppInit") << "Error : You are using the wrong FMOD version (" << version
+			<< ")!  You should be using FMOD " << FMOD_VERSION << LL_ENDL;
+		//return false;
+	}
+
+	U32 fmod_flags = 0x0;
+
+#if LL_WINDOWS
+	// Windows needs to know which window is frontmost.
+	// This must be called before FSOUND_Init() per the FMOD docs.
+	// This could be used to let FMOD handle muting when we lose focus,
+	// but we don't actually want to do that because we want to distinguish
+	// between minimized and not-focused states.
+	if (!FSOUND_SetHWND(userdata))
+	{
+		LL_WARNS("AppInit") << "Error setting FMOD window: "
+			<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+		return false;
+	}
+	// Play audio when we don't have focus.
+	// (For example, IM client on top of us.)
+	// This means we also try to play audio when minimized,
+	// so we manually handle muting in that case. JC
+	fmod_flags |= FSOUND_INIT_GLOBALFOCUS;
+#endif
+
+#if LL_LINUX
+	// initialize the FMOD engine
+
+	// This is a hack to use only FMOD's basic FPU mixer
+	// when the LL_VALGRIND environmental variable is set,
+	// otherwise valgrind will fall over on FMOD's MMX detection
+	if (getenv("LL_VALGRIND"))		/*Flawfinder: ignore*/
+	{
+		LL_INFOS("AppInit") << "Pacifying valgrind in FMOD init." << LL_ENDL;
+		FSOUND_SetMixer(FSOUND_MIXER_QUALITY_FPU);
+	}
+
+	// If we don't set an output method, Linux FMOD always
+	// decides on OSS and fails otherwise.  So we'll manually
+	// try ESD, then OSS, then ALSA.
+	// Why this order?  See SL-13250, but in short, OSS emulated
+	// on top of ALSA is ironically more reliable than raw ALSA.
+	// Ack, and ESD has more reliable failure modes - but has worse
+	// latency - than all of them, so wins for now.
+	bool audio_ok = false;
+
+	if (!audio_ok)
+		if (NULL == getenv("LL_BAD_FMOD_ESD")) /*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying ESD audio output..." << LL_ENDL;
+			if(FSOUND_SetOutput(FSOUND_OUTPUT_ESD) &&
+			   FSOUND_Init(44100, num_channels, fmod_flags))
+			{
+				LL_DEBUGS("AppInit") << "ESD audio output initialized OKAY"
+					<< LL_ENDL;
+				audio_ok = true;
+			} else {
+				LL_WARNS("AppInit") << "ESD audio output FAILED to initialize: "
+					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+			}
+		} else {
+			LL_DEBUGS("AppInit") << "ESD audio output SKIPPED" << LL_ENDL;
+		}
+
+	if (!audio_ok)
+		if (NULL == getenv("LL_BAD_FMOD_OSS")) 	 /*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying OSS audio output..."	<< LL_ENDL;
+			if(FSOUND_SetOutput(FSOUND_OUTPUT_OSS) &&
+			   FSOUND_Init(44100, num_channels, fmod_flags))
+			{
+				LL_DEBUGS("AppInit") << "OSS audio output initialized OKAY" << LL_ENDL;
+				audio_ok = true;
+			} else {
+				LL_WARNS("AppInit") << "OSS audio output FAILED to initialize: "
+					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+			}
+		} else {
+			LL_DEBUGS("AppInit") << "OSS audio output SKIPPED" << LL_ENDL;
+		}
+
+	if (!audio_ok)
+		if (NULL == getenv("LL_BAD_FMOD_ALSA"))		/*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying ALSA audio output..." << LL_ENDL;
+			if(FSOUND_SetOutput(FSOUND_OUTPUT_ALSA) &&
+			   FSOUND_Init(44100, num_channels, fmod_flags))
+			{
+				LL_DEBUGS("AppInit") << "ALSA audio output initialized OKAY" << LL_ENDL;
+				audio_ok = true;
+			} else {
+				LL_WARNS("AppInit") << "ALSA audio output FAILED to initialize: "
+					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+			}
+		} else {
+			LL_DEBUGS("AppInit") << "OSS audio output SKIPPED" << LL_ENDL;
+		}
+
+	if (!audio_ok)
+	{
+		LL_WARNS("AppInit") << "Overall audio init failure." << LL_ENDL;
+		return false;
+	}
+
+	// On Linux, FMOD causes a SIGPIPE for some netstream error
+	// conditions (an FMOD bug); ignore SIGPIPE so it doesn't crash us.
+	// NOW FIXED in FMOD 3.x since 2006-10-01.
+	//signal(SIGPIPE, SIG_IGN);
+
+	// We're interested in logging which output method we
+	// ended up with, for QA purposes.
+	switch (FSOUND_GetOutput())
+	{
+	case FSOUND_OUTPUT_NOSOUND: LL_DEBUGS("AppInit") << "Audio output: NoSound" << LL_ENDL; break;
+	case FSOUND_OUTPUT_OSS:	LL_DEBUGS("AppInit") << "Audio output: OSS" << LL_ENDL; break;
+	case FSOUND_OUTPUT_ESD:	LL_DEBUGS("AppInit") << "Audio output: ESD" << LL_ENDL; break;
+	case FSOUND_OUTPUT_ALSA: LL_DEBUGS("AppInit") << "Audio output: ALSA" << LL_ENDL; break;
+	default: LL_INFOS("AppInit") << "Audio output: Unknown!" << LL_ENDL; break;
+	};
+
+#else // LL_LINUX
+
+	// initialize the FMOD engine
+	if (!FSOUND_Init(44100, num_channels, fmod_flags))
+	{
+		LL_WARNS("AppInit") << "Error initializing FMOD: "
+			<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+		return false;
+	}
+	
+#endif
+
+	// set up our favourite FMOD-native streaming audio implementation if none has already been added
+	if (!getStreamingAudioImpl()) // no existing implementation added
+		setStreamingAudioImpl(new LLStreamingAudio_FMOD());
+
+	LL_DEBUGS("AppInit") << "LLAudioEngine_FMOD::init() FMOD initialized correctly" << LL_ENDL;
+
+	mInited = true;
+
+	return true;
+}
+
+
+std::string LLAudioEngine_FMOD::getDriverName(bool verbose)
+{
+	if (verbose)
+	{
+		F32 version = FSOUND_GetVersion();
+		return llformat("FMOD version %f", version);
+	}
+	else
+	{
+		return "FMOD";
+	}
+}
+
+
+void LLAudioEngine_FMOD::allocateListener(void)
+{	
+	mListenerp = (LLListener *) new LLListener_FMOD();
+	if (!mListenerp)
+	{
+		llwarns << "Listener creation failed" << llendl;
+	}
+}
+
+
+void LLAudioEngine_FMOD::shutdown()
+{
+	if (mWindDSP)
+	{
+		FSOUND_DSP_SetActive(mWindDSP,false);
+		FSOUND_DSP_Free(mWindDSP);
+	}
+
+	stopInternetStream();
+
+	LLAudioEngine::shutdown();
+	
+	llinfos << "LLAudioEngine_FMOD::shutdown() closing FMOD" << llendl;
+	FSOUND_Close();
+	llinfos << "LLAudioEngine_FMOD::shutdown() done closing FMOD" << llendl;
+
+	delete mListenerp;
+	mListenerp = NULL;
+}
+
+
+LLAudioBuffer * LLAudioEngine_FMOD::createBuffer()
+{
+	return new LLAudioBufferFMOD();
+}
+
+
+LLAudioChannel * LLAudioEngine_FMOD::createChannel()
+{
+	return new LLAudioChannelFMOD();
+}
+
+
+bool LLAudioEngine_FMOD::initWind()
+{
+	if (!mWindGen)
+	{
+		bool enable;
+		
+		switch (FSOUND_GetMixer())
+		{
+			case FSOUND_MIXER_MMXP5:
+			case FSOUND_MIXER_MMXP6:
+			case FSOUND_MIXER_QUALITY_MMXP5:
+			case FSOUND_MIXER_QUALITY_MMXP6:
+				enable = (typeid(MIXBUFFERFORMAT) == typeid(S16));
+				break;
+			case FSOUND_MIXER_BLENDMODE:
+				enable = (typeid(MIXBUFFERFORMAT) == typeid(S32));
+				break;
+			case FSOUND_MIXER_QUALITY_FPU:
+				enable = (typeid(MIXBUFFERFORMAT) == typeid(F32));
+				break;
+			default:
+				// FSOUND_GetMixer() does not return a valid mixer type on Darwin
+				LL_INFOS("AppInit") << "Unknown FMOD mixer type, assuming default" << LL_ENDL;
+				enable = true;
+				break;
+		}
+		
+		if (enable)
+		{
+			mWindGen = new LLWindGen<MIXBUFFERFORMAT>(FSOUND_GetOutputRate());
+		}
+		else
+		{
+			LL_WARNS("AppInit") << "Incompatible FMOD mixer type, wind noise disabled" << LL_ENDL;
+		}
+	}
+
+	mNextWindUpdate = 0.0;
+
+	if (mWindGen && !mWindDSP)
+	{
+		mWindDSP = FSOUND_DSP_Create(&windCallback, FSOUND_DSP_DEFAULTPRIORITY_CLEARUNIT + 20, mWindGen);
+	}
+	if (mWindDSP)
+	{
+		FSOUND_DSP_SetActive(mWindDSP, true);
+		return true;
+	}
+	
+	return false;
+}
+
+
+void LLAudioEngine_FMOD::cleanupWind()
+{
+	if (mWindDSP)
+	{
+		FSOUND_DSP_SetActive(mWindDSP, false);
+		FSOUND_DSP_Free(mWindDSP);
+		mWindDSP = NULL;
+	}
+
+	delete mWindGen;
+	mWindGen = NULL;
+}
+
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMOD::updateWind(LLVector3 wind_vec, F32 camera_height_above_water)
+{
+	LLVector3 wind_pos;
+	F64 pitch;
+	F64 center_freq;
+
+	if (!mEnableWind)
+	{
+		return;
+	}
+	
+	if (mWindUpdateTimer.checkExpirationAndReset(LL_WIND_UPDATE_INTERVAL))
+	{
+		
+		// wind comes in as Linden coordinate (+X = forward, +Y = left, +Z = up)
+		// need to convert this to the conventional orientation DS3D and OpenAL use
+		// where +X = right, +Y = up, +Z = backwards
+
+		wind_vec.setVec(-wind_vec.mV[1], wind_vec.mV[2], -wind_vec.mV[0]);
+
+		// cerr << "Wind update" << endl;
+
+		pitch = 1.0 + mapWindVecToPitch(wind_vec);
+		center_freq = 80.0 * pow(pitch,2.5*(mapWindVecToGain(wind_vec)+1.0));
+		
+		mWindGen->mTargetFreq = (F32)center_freq;
+		mWindGen->mTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
+		mWindGen->mTargetPanGainR = (F32)mapWindVecToPan(wind_vec);
+  	}
+}
+
+/*
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMOD::setSourceMinDistance(U16 source_num, F64 distance)
+{
+	if (!mInited)
+	{
+		return;
+	}
+	if (mBuffer[source_num])
+	{
+		mMinDistance[source_num] = (F32) distance;
+		if (!FSOUND_Sample_SetMinMaxDistance(mBuffer[source_num],mMinDistance[source_num], mMaxDistance[source_num]))
+		{
+			llwarns << "FMOD::setSourceMinDistance(" << source_num << "), error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMOD::setSourceMaxDistance(U16 source_num, F64 distance)
+{
+	if (!mInited)
+	{
+		return;
+	}
+	if (mBuffer[source_num])
+	{
+		mMaxDistance[source_num] = (F32) distance;
+		if (!FSOUND_Sample_SetMinMaxDistance(mBuffer[source_num],mMinDistance[source_num], mMaxDistance[source_num]))
+		{
+			llwarns << "FMOD::setSourceMaxDistance(" << source_num << "), error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMOD::get3DParams(S32 source_num, S32 *volume, S32 *freq, S32 *inside, S32 *outside, LLVector3 *orient, S32 *out_volume, F32 *min_dist, F32 *max_dist)
+{
+	*volume = 0;
+	*freq = 0;
+	*inside = 0;
+	*outside = 0;
+	*orient = LLVector3::zero;
+	*out_volume = 0;
+	*min_dist = 0.f;
+	*max_dist = 0.f;
+}
+
+*/
+
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMOD::setInternalGain(F32 gain)
+{
+	if (!mInited)
+	{
+		return;
+	}
+
+	gain = llclamp( gain, 0.0f, 1.0f );
+	FSOUND_SetSFXMasterVolume( llround( 255.0f * gain ) );
+
+	LLStreamingAudioInterface *saimpl = getStreamingAudioImpl();
+	if ( saimpl )
+	{
+		// fmod likes its streaming audio channel gain re-asserted after
+		// master volume change.
+		saimpl->setGain(saimpl->getGain());
+	}
+}
+
+//
+// LLAudioChannelFMOD implementation
+//
+
+LLAudioChannelFMOD::LLAudioChannelFMOD() : LLAudioChannel(), mChannelID(0), mLastSamplePos(0)
+{
+}
+
+
+LLAudioChannelFMOD::~LLAudioChannelFMOD()
+{
+	cleanup();
+}
+
+
+bool LLAudioChannelFMOD::updateBuffer()
+{
+	if (LLAudioChannel::updateBuffer())
+	{
+		// Base class update returned true, which means that we need to actually
+		// set up the channel for a different buffer.
+
+		LLAudioBufferFMOD *bufferp = (LLAudioBufferFMOD *)mCurrentSourcep->getCurrentBuffer();
+
+		// Grab the FMOD sample associated with the buffer
+		FSOUND_SAMPLE *samplep = bufferp->getSample();
+		if (!samplep)
+		{
+			// This is bad, there should ALWAYS be a sample associated with a legit
+			// buffer.
+			llerrs << "No FMOD sample!" << llendl;
+			return false;
+		}
+
+
+		// Actually play the sound.  Start it off paused so we can do all the necessary
+		// setup.
+		mChannelID = FSOUND_PlaySoundEx(FSOUND_FREE, samplep, FSOUND_DSP_GetSFXUnit(), true);
+
+		//llinfos << "Setting up channel " << std::hex << mChannelID << std::dec << llendl;
+	}
+
+	// If we have a source for the channel, we need to update its gain.
+	if (mCurrentSourcep)
+	{
+		// SJB: warnings can spam and hurt framerate, disabling
+		if (!FSOUND_SetVolume(mChannelID, llround(getSecondaryGain() * mCurrentSourcep->getGain() * 255.0f)))
+		{
+// 			llwarns << "LLAudioChannelFMOD::updateBuffer error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+		
+		if (!FSOUND_SetLoopMode(mChannelID, mCurrentSourcep->isLoop() ? FSOUND_LOOP_NORMAL : FSOUND_LOOP_OFF))
+		{
+// 			llwarns << "Channel " << mChannelID << "Source ID: " << mCurrentSourcep->getID()
+// 					<< " at " << mCurrentSourcep->getPositionGlobal() << llendl;
+// 			llwarns << "LLAudioChannelFMOD::updateBuffer error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+	}
+
+	return true;
+}
+
+
+void LLAudioChannelFMOD::update3DPosition()
+{
+	if (!mChannelID)
+	{
+		// We're not actually a live channel (i.e., we're not playing back anything)
+		return;
+	}
+
+	LLAudioBufferFMOD *bufferp = (LLAudioBufferFMOD *)mCurrentBufferp;
+	if (!bufferp)
+	{
+		// We don't have a buffer associated with us (should really have been picked up
+		// by the above if.
+		return;
+	}
+
+	if (mCurrentSourcep->isAmbient())
+	{
+		// Ambient sound, don't need to do any positional updates.
+		bufferp->set3DMode(false);
+	}
+	else
+	{
+		// Localized sound.  Update the position and velocity of the sound.
+		bufferp->set3DMode(true);
+
+		LLVector3 float_pos;
+		float_pos.setVec(mCurrentSourcep->getPositionGlobal());
+		if (!FSOUND_3D_SetAttributes(mChannelID, float_pos.mV, mCurrentSourcep->getVelocity().mV))
+		{
+			LL_DEBUGS("FMOD") << "LLAudioChannelFMOD::update3DPosition error: " << FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
+		}
+	}
+}
+
+
+void LLAudioChannelFMOD::updateLoop()
+{
+	if (!mChannelID)
+	{
+		// May want to clear up the loop/sample counters.
+		return;
+	}
+
+	//
+	// Hack:  We keep track of whether we looped or not by seeing when the
+	// sample position looks like it's going backwards.  Not reliable; may
+	// yield false negatives.
+	//
+	U32 cur_pos = FSOUND_GetCurrentPosition(mChannelID);
+	if (cur_pos < (U32)mLastSamplePos)
+	{
+		mLoopedThisFrame = true;
+	}
+	mLastSamplePos = cur_pos;
+}
+
+
+void LLAudioChannelFMOD::cleanup()
+{
+	if (!mChannelID)
+	{
+		//llinfos << "Aborting cleanup with no channelID." << llendl;
+		return;
+	}
+
+	//llinfos << "Cleaning up channel: " << mChannelID << llendl;
+	if (!FSOUND_StopSound(mChannelID))
+	{
+		LL_DEBUGS("FMOD") << "LLAudioChannelFMOD::cleanup error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+	}
+
+	mCurrentBufferp = NULL;
+	mChannelID = 0;
+}
+
+
+void LLAudioChannelFMOD::play()
+{
+	if (!mChannelID)
+	{
+		llwarns << "Playing without a channelID, aborting" << llendl;
+		return;
+	}
+
+	if (!FSOUND_SetPaused(mChannelID, false))
+	{
+		llwarns << "LLAudioChannelFMOD::play error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+	}
+	getSource()->setPlayedOnce(true);
+}
+
+
+void LLAudioChannelFMOD::playSynced(LLAudioChannel *channelp)
+{
+	LLAudioChannelFMOD *fmod_channelp = (LLAudioChannelFMOD*)channelp;
+	if (!(fmod_channelp->mChannelID && mChannelID))
+	{
+		// Don't have channels allocated to both the master and the slave
+		return;
+	}
+
+	U32 position = FSOUND_GetCurrentPosition(fmod_channelp->mChannelID) % mCurrentBufferp->getLength();
+	// Try to match the position of our sync master
+	if (!FSOUND_SetCurrentPosition(mChannelID, position))
+	{
+		llwarns << "LLAudioChannelFMOD::playSynced unable to set current position" << llendl;
+	}
+
+	// Start us playing
+	play();
+}
+
+
+bool LLAudioChannelFMOD::isPlaying()
+{
+	if (!mChannelID)
+	{
+		return false;
+	}
+
+	return FSOUND_IsPlaying(mChannelID) && (!FSOUND_GetPaused(mChannelID));
+}
+
+
+
+//
+// LLAudioBufferFMOD implementation
+//
+
+
+LLAudioBufferFMOD::LLAudioBufferFMOD()
+{
+	mSamplep = NULL;
+}
+
+
+LLAudioBufferFMOD::~LLAudioBufferFMOD()
+{
+	if (mSamplep)
+	{
+		// Clean up the associated FMOD sample if it exists.
+		FSOUND_Sample_Free(mSamplep);
+		mSamplep = NULL;
+	}
+}
+
+
+bool LLAudioBufferFMOD::loadWAV(const std::string& filename)
+{
+	// Try to open a wav file from disk.  This will eventually go away, as we don't
+	// really want to block doing this.
+	if (filename.empty())
+	{
+		// invalid filename, abort.
+		return false;
+	}
+
+	if (!LLAPRFile::isExist(filename, LL_APR_RPB))
+	{
+		// File not found, abort.
+		return false;
+	}
+	
+	if (mSamplep)
+	{
+		// If there's already something loaded in this buffer, clean it up.
+		FSOUND_Sample_Free(mSamplep);
+		mSamplep = NULL;
+	}
+
+	// Load up the wav file into an fmod sample
+#if LL_WINDOWS
+	// MikeS. - Loading the sound file manually and then handing it over to FMOD,
+	//	since FMOD uses posix IO internally,
+	// which doesn't work with unicode file paths.
+	LLFILE* sound_file = LLFile::fopen(filename,"rb");	/* Flawfinder: ignore */
+	if (sound_file)
+	{
+		fseek(sound_file,0,SEEK_END);
+		U32	file_length = ftell(sound_file);	//Find the length of the file by seeking to the end and getting the offset
+		size_t	read_count;
+		fseek(sound_file,0,SEEK_SET);	//Seek back to the beginning
+		char*	buffer = new char[file_length];
+		llassert(buffer);
+		read_count = fread((void*)buffer,file_length,1,sound_file);//Load it..
+		if(ferror(sound_file)==0 && (read_count == 1)){//No read error, and we got 1 chunk of our size...
+			unsigned int mode_flags = FSOUND_LOOP_NORMAL | FSOUND_LOADMEMORY;
+									//FSOUND_16BITS | FSOUND_MONO | FSOUND_LOADMEMORY | FSOUND_LOOP_NORMAL;
+			mSamplep = FSOUND_Sample_Load(FSOUND_UNMANAGED, buffer, mode_flags , 0, file_length);
+		}
+		delete[] buffer;
+		fclose(sound_file);
+	}
+#else
+	mSamplep = FSOUND_Sample_Load(FSOUND_UNMANAGED, filename.c_str(), FSOUND_LOOP_NORMAL, 0, 0);
+#endif
+
+	if (!mSamplep)
+	{
+		// We failed to load the file for some reason.
+		llwarns << "Could not load data '" << filename << "': "
+				<< FMOD_ErrorString(FSOUND_GetError()) << llendl;
+
+		//
+		// If we EVER want to load wav files provided by end users, we need
+		// to rethink this!
+		//
+		// file is probably corrupt - remove it.
+		LLFile::remove(filename);
+		return false;
+	}
+
+	// Everything went well, return true
+	return true;
+}
+
+
+U32 LLAudioBufferFMOD::getLength()
+{
+	if (!mSamplep)
+	{
+		return 0;
+	}
+
+	return FSOUND_Sample_GetLength(mSamplep);
+}
+
+
+void LLAudioBufferFMOD::set3DMode(bool use3d)
+{
+	U16 current_mode = FSOUND_Sample_GetMode(mSamplep);
+	
+	if (use3d)
+	{
+		if (!FSOUND_Sample_SetMode(mSamplep, (current_mode & (~FSOUND_2D))))
+		{
+			llwarns << "LLAudioBufferFMOD::set3DMode error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+	}
+	else
+	{
+		if (!FSOUND_Sample_SetMode(mSamplep, current_mode | FSOUND_2D))
+		{
+			llwarns << "LLAudioBufferFMOD::set3DMode error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+		}
+	}
+}
+
+
+void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void* userdata)
+{
+	// originalbuffer = fmod's original mixbuffer.
+	// newbuffer = the buffer passed from the previous DSP unit.
+	// length = length in samples at this mix time.
+	// userdata = user parameter passed through in FSOUND_DSP_Create.
+	
+	LLWindGen<LLAudioEngine_FMOD::MIXBUFFERFORMAT> *windgen =
+		(LLWindGen<LLAudioEngine_FMOD::MIXBUFFERFORMAT> *)userdata;
+	
+	newbuffer = windgen->windGenerate((LLAudioEngine_FMOD::MIXBUFFERFORMAT *)newbuffer, length);
+
+	return newbuffer;
+}

indra/llaudio/llaudioengine_fmod.h

@@ -0,0 +1,130 @@
+/** 
+ * @file audioengine_fmod.h
+ * @brief Definition of LLAudioEngine class abstracting the audio
+ * support as a FMOD 3D implementation
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_AUDIOENGINE_FMOD_H
+#define LL_AUDIOENGINE_FMOD_H
+
+#include "llaudioengine.h"
+#include "lllistener_fmod.h"
+#include "llwindgen.h"
+
+#include "fmod.h"
+
+class LLAudioStreamManagerFMOD;
+
+class LLAudioEngine_FMOD : public LLAudioEngine 
+{
+public:
+	LLAudioEngine_FMOD();
+	virtual ~LLAudioEngine_FMOD();
+
+	// initialization/startup/shutdown
+	virtual bool init(const S32 num_channels, void *user_data);
+       	virtual std::string getDriverName(bool verbose);
+	virtual void allocateListener();
+
+	virtual void shutdown();
+
+	/*virtual*/ bool initWind();
+	/*virtual*/ void cleanupWind();
+
+	/*virtual*/void updateWind(LLVector3 direction, F32 camera_height_above_water);
+
+#if LL_DARWIN
+	typedef S32 MIXBUFFERFORMAT;
+#else
+	typedef S16 MIXBUFFERFORMAT;
+#endif
+	
+protected:
+	/*virtual*/ LLAudioBuffer *createBuffer(); // Get a free buffer, or flush an existing one if you have to.
+	/*virtual*/ LLAudioChannel *createChannel(); // Create a new audio channel.
+
+	/*virtual*/ void setInternalGain(F32 gain);
+protected:
+	static signed char F_CALLBACKAPI callbackMetaData(char* name, char* value, void* userdata);
+
+	//F32 mMinDistance[MAX_BUFFERS];
+	//F32 mMaxDistance[MAX_BUFFERS];
+
+	bool mInited;
+
+	// On Windows, userdata is the HWND of the application window.
+	void* mUserData;
+
+	LLWindGen<MIXBUFFERFORMAT> *mWindGen;
+	FSOUND_DSPUNIT *mWindDSP;
+};
+
+
+class LLAudioChannelFMOD : public LLAudioChannel
+{
+public:
+	LLAudioChannelFMOD();
+	virtual ~LLAudioChannelFMOD();
+
+protected:
+	/*virtual*/ void play();
+	/*virtual*/ void playSynced(LLAudioChannel *channelp);
+	/*virtual*/ void cleanup();
+	/*virtual*/ bool isPlaying();
+
+	/*virtual*/ bool updateBuffer();
+	/*virtual*/ void update3DPosition();
+	/*virtual*/ void updateLoop();
+
+protected:
+	int mChannelID;
+	S32 mLastSamplePos;
+};
+
+
+class LLAudioBufferFMOD : public LLAudioBuffer
+{
+public:
+	LLAudioBufferFMOD();
+	virtual ~LLAudioBufferFMOD();
+
+	/*virtual*/ bool loadWAV(const std::string& filename);
+	/*virtual*/ U32 getLength();
+	friend class LLAudioChannelFMOD;
+
+	void set3DMode(bool use3d);
+protected:
+	FSOUND_SAMPLE *getSample()	{ return mSamplep; }
+protected:
+	FSOUND_SAMPLE *mSamplep;
+};
+
+
+#endif // LL_AUDIOENGINE_FMOD_H

indra/llaudio/llaudioengine_openal.cpp

@@ -0,0 +1,548 @@
+/**
+ * @file audioengine_openal.cpp
+ * @brief implementation of audio engine using OpenAL
+ * support as a OpenAL 3D implementation
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "lldir.h"
+
+#include "llaudioengine_openal.h"
+#include "lllistener_openal.h"
+
+
+LLAudioEngine_OpenAL::LLAudioEngine_OpenAL()
+	:
+	mWindGen(NULL),
+	mWindBuf(NULL),
+	mWindBufFreq(0),
+	mWindBufSamples(0),
+	mWindBufBytes(0),
+	mWindSource(AL_NONE),
+	mNumEmptyWindALBuffers(MAX_NUM_WIND_BUFFERS)
+{
+}
+
+// virtual
+LLAudioEngine_OpenAL::~LLAudioEngine_OpenAL()
+{
+}
+
+// virtual
+bool LLAudioEngine_OpenAL::init(const S32 num_channels, void* userdata)
+{
+	mWindGen = NULL;
+	LLAudioEngine::init(num_channels, userdata);
+
+	if(!alutInit(NULL, NULL))
+	{
+		llwarns << "LLAudioEngine_OpenAL::init() ALUT initialization failed: " << alutGetErrorString (alutGetError ()) << llendl;
+		return false;
+	}
+
+	llinfos << "LLAudioEngine_OpenAL::init() OpenAL successfully initialized" << llendl;
+
+	llinfos << "OpenAL version: "
+		<< ll_safe_string(alGetString(AL_VERSION)) << llendl;
+	llinfos << "OpenAL vendor: "
+		<< ll_safe_string(alGetString(AL_VENDOR)) << llendl;
+	llinfos << "OpenAL renderer: "
+		<< ll_safe_string(alGetString(AL_RENDERER)) << llendl;
+
+	ALint major = alutGetMajorVersion ();
+	ALint minor = alutGetMinorVersion ();
+	llinfos << "ALUT version: " << major << "." << minor << llendl;
+
+	ALCdevice *device = alcGetContextsDevice(alcGetCurrentContext());
+
+	alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, &major);
+	alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, &minor);
+	llinfos << "ALC version: " << major << "." << minor << llendl;
+
+	llinfos << "ALC default device: "
+		<< ll_safe_string(alcGetString(device,
+					       ALC_DEFAULT_DEVICE_SPECIFIER))
+		<< llendl;
+
+	return true;
+}
+
+// virtual
+std::string LLAudioEngine_OpenAL::getDriverName(bool verbose)
+{
+	ALCdevice *device = alcGetContextsDevice(alcGetCurrentContext());
+	std::ostringstream version;
+
+	version <<
+		"OpenAL";
+
+	if (verbose)
+	{
+		version <<
+			", version " <<
+			ll_safe_string(alGetString(AL_VERSION)) <<
+			" / " <<
+			ll_safe_string(alGetString(AL_VENDOR)) <<
+			" / " <<
+			ll_safe_string(alGetString(AL_RENDERER));
+		
+		if (device)
+			version <<
+				": " <<
+				ll_safe_string(alcGetString(device,
+				    ALC_DEFAULT_DEVICE_SPECIFIER));
+	}
+
+	return version.str();
+}
+
+// virtual
+void LLAudioEngine_OpenAL::allocateListener()
+{
+	mListenerp = (LLListener *) new LLListener_OpenAL();
+	if(!mListenerp)
+	{
+		llwarns << "LLAudioEngine_OpenAL::allocateListener() Listener creation failed" << llendl;
+	}
+}
+
+// virtual
+void LLAudioEngine_OpenAL::shutdown()
+{
+	llinfos << "About to LLAudioEngine::shutdown()" << llendl;
+	LLAudioEngine::shutdown();
+
+	llinfos << "About to alutExit()" << llendl;
+	if(!alutExit())
+	{
+		llwarns << "Nuts." << llendl;
+		llwarns << "LLAudioEngine_OpenAL::shutdown() ALUT shutdown failed: " << alutGetErrorString (alutGetError ()) << llendl;
+	}
+
+	llinfos << "LLAudioEngine_OpenAL::shutdown() OpenAL successfully shut down" << llendl;
+
+	delete mListenerp;
+	mListenerp = NULL;
+}
+
+LLAudioBuffer *LLAudioEngine_OpenAL::createBuffer()
+{
+	return new LLAudioBufferOpenAL();
+}
+
+LLAudioChannel *LLAudioEngine_OpenAL::createChannel()
+{
+	return new LLAudioChannelOpenAL();
+}
+
+void LLAudioEngine_OpenAL::setInternalGain(F32 gain)
+{
+	//llinfos << "LLAudioEngine_OpenAL::setInternalGain() Gain: " << gain << llendl;
+	alListenerf(AL_GAIN, gain);
+}
+
+LLAudioChannelOpenAL::LLAudioChannelOpenAL()
+	:
+	mALSource(AL_NONE),
+	mLastSamplePos(0)
+{
+	alGenSources(1, &mALSource);
+}
+
+LLAudioChannelOpenAL::~LLAudioChannelOpenAL()
+{
+	cleanup();
+	alDeleteSources(1, &mALSource);
+}
+
+void LLAudioChannelOpenAL::cleanup()
+{
+	alSourceStop(mALSource);
+	mCurrentBufferp = NULL;
+}
+
+void LLAudioChannelOpenAL::play()
+{
+	if (mALSource == AL_NONE)
+	{
+		llwarns << "Playing without a mALSource, aborting" << llendl;
+		return;
+	}
+
+	if(!isPlaying())
+	{
+		alSourcePlay(mALSource);
+		getSource()->setPlayedOnce(true);
+	}
+}
+
+void LLAudioChannelOpenAL::playSynced(LLAudioChannel *channelp)
+{
+	if (channelp)
+	{
+		LLAudioChannelOpenAL *masterchannelp =
+			(LLAudioChannelOpenAL*)channelp;
+		if (mALSource != AL_NONE &&
+		    masterchannelp->mALSource != AL_NONE)
+		{
+			// we have channels allocated to master and slave
+			ALfloat master_offset;
+			alGetSourcef(masterchannelp->mALSource, AL_SEC_OFFSET,
+				     &master_offset);
+
+			llinfos << "Syncing with master at " << master_offset
+				<< "sec" << llendl;
+			// *TODO: detect when this fails, maybe use AL_SAMPLE_
+			alSourcef(mALSource, AL_SEC_OFFSET, master_offset);
+		}
+	}
+	play();
+}
+
+bool LLAudioChannelOpenAL::isPlaying()
+{
+	if (mALSource != AL_NONE)
+	{
+		ALint state;
+		alGetSourcei(mALSource, AL_SOURCE_STATE, &state);
+		if(state == AL_PLAYING)
+		{
+			return true;
+		}
+	}
+		
+	return false;
+}
+
+bool LLAudioChannelOpenAL::updateBuffer()
+{
+	if (LLAudioChannel::updateBuffer())
+	{
+		// Base class update returned true, which means that we need to actually
+		// set up the source for a different buffer.
+		LLAudioBufferOpenAL *bufferp = (LLAudioBufferOpenAL *)mCurrentSourcep->getCurrentBuffer();
+		ALuint buffer = bufferp->getBuffer();
+		alSourcei(mALSource, AL_BUFFER, buffer);
+		mLastSamplePos = 0;
+	}
+
+	if (mCurrentSourcep)
+	{
+		alSourcef(mALSource, AL_GAIN,
+			  mCurrentSourcep->getGain() * getSecondaryGain());
+		alSourcei(mALSource, AL_LOOPING,
+			  mCurrentSourcep->isLoop() ? AL_TRUE : AL_FALSE);
+		alSourcef(mALSource, AL_ROLLOFF_FACTOR,
+			  gAudiop->mListenerp->getRolloffFactor());
+	}
+
+	return true;
+}
+
+
+void LLAudioChannelOpenAL::updateLoop()
+{
+	if (mALSource == AL_NONE)
+	{
+		return;
+	}
+
+	// Hack:  We keep track of whether we looped or not by seeing when the
+	// sample position looks like it's going backwards.  Not reliable; may
+	// yield false negatives.
+	//
+	ALint cur_pos;
+	alGetSourcei(mALSource, AL_SAMPLE_OFFSET, &cur_pos);
+	if (cur_pos < mLastSamplePos)
+	{
+		mLoopedThisFrame = true;
+	}
+	mLastSamplePos = cur_pos;
+}
+
+
+void LLAudioChannelOpenAL::update3DPosition()
+{
+	if(!mCurrentSourcep)
+	{
+		return;
+	}
+	if (mCurrentSourcep->isAmbient())
+	{
+		alSource3f(mALSource, AL_POSITION, 0.0, 0.0, 0.0);
+		alSource3f(mALSource, AL_VELOCITY, 0.0, 0.0, 0.0);
+		alSourcei (mALSource, AL_SOURCE_RELATIVE, AL_TRUE);
+	} else {
+		LLVector3 float_pos;
+		float_pos.setVec(mCurrentSourcep->getPositionGlobal());
+		alSourcefv(mALSource, AL_POSITION, float_pos.mV);
+		alSourcefv(mALSource, AL_VELOCITY, mCurrentSourcep->getVelocity().mV);
+		alSourcei (mALSource, AL_SOURCE_RELATIVE, AL_FALSE);
+	}
+
+	alSourcef(mALSource, AL_GAIN, mCurrentSourcep->getGain() * getSecondaryGain());
+}
+
+LLAudioBufferOpenAL::LLAudioBufferOpenAL()
+{
+	mALBuffer = AL_NONE;
+}
+
+LLAudioBufferOpenAL::~LLAudioBufferOpenAL()
+{
+	cleanup();
+}
+
+void LLAudioBufferOpenAL::cleanup()
+{
+	if(mALBuffer != AL_NONE)
+	{
+		alDeleteBuffers(1, &mALBuffer);
+		mALBuffer = AL_NONE;
+	}
+}
+
+bool LLAudioBufferOpenAL::loadWAV(const std::string& filename)
+{
+	cleanup();
+	mALBuffer = alutCreateBufferFromFile(filename.c_str());
+	if(mALBuffer == AL_NONE)
+	{
+		ALenum error = alutGetError(); 
+		if (gDirUtilp->fileExists(filename))
+		{
+			llwarns <<
+				"LLAudioBufferOpenAL::loadWAV() Error loading "
+				<< filename
+				<< " " << alutGetErrorString(error) << llendl;
+		}
+		else
+		{
+			// It's common for the file to not actually exist.
+			lldebugs <<
+				"LLAudioBufferOpenAL::loadWAV() Error loading "
+				 << filename
+				 << " " << alutGetErrorString(error) << llendl;
+		}
+		return false;
+	}
+
+	return true;
+}
+
+U32 LLAudioBufferOpenAL::getLength()
+{
+	if(mALBuffer == AL_NONE)
+	{
+		return 0;
+	}
+	ALint length;
+	alGetBufferi(mALBuffer, AL_SIZE, &length);
+	return length / 2; // convert size in bytes to size in (16-bit) samples
+}
+
+// ------------
+
+bool LLAudioEngine_OpenAL::initWind()
+{
+	ALenum error;
+	llinfos << "LLAudioEngine_OpenAL::initWind() start" << llendl;
+
+	mNumEmptyWindALBuffers = MAX_NUM_WIND_BUFFERS;
+
+	alGetError(); /* clear error */
+	
+	alGenSources(1,&mWindSource);
+	
+	if((error=alGetError()) != AL_NO_ERROR)
+	{
+		llwarns << "LLAudioEngine_OpenAL::initWind() Error creating wind sources: "<<error<<llendl;
+	}
+
+	mWindGen = new LLWindGen<WIND_SAMPLE_T>;
+
+	mWindBufFreq = mWindGen->getInputSamplingRate();
+	mWindBufSamples = llceil(mWindBufFreq * WIND_BUFFER_SIZE_SEC);
+	mWindBufBytes = mWindBufSamples * 2 /*stereo*/ * sizeof(WIND_SAMPLE_T);
+
+	mWindBuf = new WIND_SAMPLE_T [mWindBufSamples * 2 /*stereo*/];
+
+	if(mWindBuf==NULL)
+	{
+		llerrs << "LLAudioEngine_OpenAL::initWind() Error creating wind memory buffer" << llendl;
+		return false;
+	}
+
+	llinfos << "LLAudioEngine_OpenAL::initWind() done" << llendl;
+
+	return true;
+}
+
+void LLAudioEngine_OpenAL::cleanupWind()
+{
+	llinfos << "LLAudioEngine_OpenAL::cleanupWind()" << llendl;
+
+	if (mWindSource != AL_NONE)
+	{
+		// detach and delete all outstanding buffers on the wind source
+		alSourceStop(mWindSource);
+		ALint processed;
+		alGetSourcei(mWindSource, AL_BUFFERS_PROCESSED, &processed);
+		while (processed--)
+		{
+			ALuint buffer = AL_NONE;
+			alSourceUnqueueBuffers(mWindSource, 1, &buffer);
+			alDeleteBuffers(1, &buffer);
+		}
+
+		// delete the wind source itself
+		alDeleteSources(1, &mWindSource);
+
+		mWindSource = AL_NONE;
+	}
+	
+	delete[] mWindBuf;
+	mWindBuf = NULL;
+
+	delete mWindGen;
+	mWindGen = NULL;
+}
+
+void LLAudioEngine_OpenAL::updateWind(LLVector3 wind_vec, F32 camera_altitude)
+{
+	LLVector3 wind_pos;
+	F64 pitch;
+	F64 center_freq;
+	ALenum error;
+	
+	if (!mEnableWind)
+		return;
+	
+	if(!mWindBuf)
+		return;
+	
+	if (mWindUpdateTimer.checkExpirationAndReset(LL_WIND_UPDATE_INTERVAL))
+	{
+		
+		// wind comes in as Linden coordinate (+X = forward, +Y = left, +Z = up)
+		// need to convert this to the conventional orientation DS3D and OpenAL use
+		// where +X = right, +Y = up, +Z = backwards
+		
+		wind_vec.setVec(-wind_vec.mV[1], wind_vec.mV[2], -wind_vec.mV[0]);
+		
+		pitch = 1.0 + mapWindVecToPitch(wind_vec);
+		center_freq = 80.0 * pow(pitch,2.5*(mapWindVecToGain(wind_vec)+1.0));
+		
+		mWindGen->mTargetFreq = (F32)center_freq;
+		mWindGen->mTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
+		mWindGen->mTargetPanGainR = (F32)mapWindVecToPan(wind_vec);
+		
+		alSourcei(mWindSource, AL_LOOPING, AL_FALSE);
+		alSource3f(mWindSource, AL_POSITION, 0.0, 0.0, 0.0);
+		alSource3f(mWindSource, AL_VELOCITY, 0.0, 0.0, 0.0);
+		alSourcef(mWindSource, AL_ROLLOFF_FACTOR, 0.0);
+		alSourcei(mWindSource, AL_SOURCE_RELATIVE, AL_TRUE);
+	}
+
+	// ok lets make a wind buffer now
+
+	ALint processed, queued, unprocessed;
+	alGetSourcei(mWindSource, AL_BUFFERS_PROCESSED, &processed);
+	alGetSourcei(mWindSource, AL_BUFFERS_QUEUED, &queued);
+	unprocessed = queued - processed;
+
+	// ensure that there are always at least 3x as many filled buffers
+	// queued as we managed to empty since last time.
+	mNumEmptyWindALBuffers = llmin(mNumEmptyWindALBuffers + processed * 3 - unprocessed, MAX_NUM_WIND_BUFFERS-unprocessed);
+	mNumEmptyWindALBuffers = llmax(mNumEmptyWindALBuffers, 0);
+
+	//llinfos << "mNumEmptyWindALBuffers: " << mNumEmptyWindALBuffers	<<" (" << unprocessed << ":" << processed << ")" << llendl;
+
+	while(processed--) // unqueue old buffers
+	{
+		ALuint buffer;
+		ALenum error;
+		alGetError(); /* clear error */
+		alSourceUnqueueBuffers(mWindSource, 1, &buffer);
+		error = alGetError();
+		if(error != AL_NO_ERROR)
+		{
+			llwarns << "LLAudioEngine_OpenAL::updateWind() error swapping (unqueuing) buffers" << llendl;
+		}
+		else
+		{
+			alDeleteBuffers(1, &buffer);
+		}
+	}
+
+	unprocessed += mNumEmptyWindALBuffers;
+	while (mNumEmptyWindALBuffers > 0) // fill+queue new buffers
+	{
+		ALuint buffer;
+		alGetError(); /* clear error */
+		alGenBuffers(1,&buffer);
+		if((error=alGetError()) != AL_NO_ERROR)
+		{
+			llwarns << "LLAudioEngine_OpenAL::updateWind() Error creating wind buffer: " << error << llendl;
+			break;
+		}
+
+		alBufferData(buffer,
+			     AL_FORMAT_STEREO16,
+			     mWindGen->windGenerate(mWindBuf,
+						    mWindBufSamples),
+			     mWindBufBytes,
+			     mWindBufFreq);
+		error = alGetError();
+		if(error != AL_NO_ERROR)
+		{
+			llwarns << "LLAudioEngine_OpenAL::updateWind() error swapping (bufferdata) buffers" << llendl;
+		}
+		
+		alSourceQueueBuffers(mWindSource, 1, &buffer);
+		error = alGetError();
+		if(error != AL_NO_ERROR)
+		{
+			llwarns << "LLAudioEngine_OpenAL::updateWind() error swapping (queuing) buffers" << llendl;
+		}
+
+		--mNumEmptyWindALBuffers;
+	}
+
+	ALint playing;
+	alGetSourcei(mWindSource, AL_SOURCE_STATE, &playing);
+	if(playing != AL_PLAYING)
+	{
+		alSourcePlay(mWindSource);
+
+		lldebugs << "Wind had stopped - probably ran out of buffers - restarting: " << (unprocessed+mNumEmptyWindALBuffers) << " now queued." << llendl;
+	}
+}
+

indra/llaudio/llaudioengine_openal.h

@@ -0,0 +1,114 @@
+/**
+ * @file audioengine_openal.cpp
+ * @brief implementation of audio engine using OpenAL
+ * support as a OpenAL 3D implementation
+ *
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+
+#ifndef LL_AUDIOENGINE_OPENAL_H
+#define LL_AUDIOENGINE_OPENAL_H
+
+#include "llaudioengine.h"
+#include "lllistener_openal.h"
+#include "llwindgen.h"
+
+class LLAudioEngine_OpenAL : public LLAudioEngine
+{
+	public:
+		LLAudioEngine_OpenAL();
+		virtual ~LLAudioEngine_OpenAL();
+
+		virtual bool init(const S32 num_channels, void *user_data);
+        	virtual std::string getDriverName(bool verbose);
+		virtual void allocateListener();
+
+		virtual void shutdown();
+
+		void setInternalGain(F32 gain);
+
+		LLAudioBuffer* createBuffer();
+		LLAudioChannel* createChannel();
+
+		/*virtual*/ bool initWind();
+		/*virtual*/ void cleanupWind();
+		/*virtual*/ void updateWind(LLVector3 direction, F32 camera_altitude);
+
+	private:
+		void * windDSP(void *newbuffer, int length);
+		typedef S16 WIND_SAMPLE_T;
+		LLWindGen<WIND_SAMPLE_T> *mWindGen;
+		S16 *mWindBuf;
+		U32 mWindBufFreq;
+		U32 mWindBufSamples;
+		U32 mWindBufBytes;
+		ALuint mWindSource;
+		int mNumEmptyWindALBuffers;
+
+		static const int MAX_NUM_WIND_BUFFERS = 80;
+		static const float WIND_BUFFER_SIZE_SEC = 0.05f; // 1/20th sec
+};
+
+class LLAudioChannelOpenAL : public LLAudioChannel
+{
+	public:
+		LLAudioChannelOpenAL();
+		virtual ~LLAudioChannelOpenAL();
+	protected:
+		/*virtual*/ void play();
+		/*virtual*/ void playSynced(LLAudioChannel *channelp);
+		/*virtual*/ void cleanup();
+		/*virtual*/ bool isPlaying();
+
+		/*virtual*/ bool updateBuffer();
+		/*virtual*/ void update3DPosition();
+		/*virtual*/ void updateLoop();
+
+		ALuint mALSource;
+	        ALint mLastSamplePos;
+};
+
+class LLAudioBufferOpenAL : public LLAudioBuffer{
+	public:
+		LLAudioBufferOpenAL();
+		virtual ~LLAudioBufferOpenAL();
+
+		bool loadWAV(const std::string& filename);
+		U32 getLength();
+
+		friend class LLAudioChannelOpenAL;
+	protected:
+		void cleanup();
+		ALuint getBuffer() {return mALBuffer;}
+
+		ALuint mALBuffer;
+};
+
+#endif

indra/llaudio/lllistener.cpp

@@ -0,0 +1,142 @@
+/** 
+ * @file listener.cpp
+ * @brief Implementation of LISTENER class abstracting the audio support
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lllistener.h"
+
+#define DEFAULT_AT  0.0f,0.0f,-1.0f
+#define DEFAULT_UP  0.0f,1.0f,0.0f
+
+//-----------------------------------------------------------------------
+// constructor
+//-----------------------------------------------------------------------
+LLListener::LLListener()
+{
+	init();
+}
+
+//-----------------------------------------------------------------------
+LLListener::~LLListener()
+{
+}
+
+//-----------------------------------------------------------------------
+void LLListener::init(void)
+{
+	mPosition.zeroVec();
+	mListenAt.setVec(DEFAULT_AT);
+	mListenUp.setVec(DEFAULT_UP);
+	mVelocity.zeroVec();
+}
+
+//-----------------------------------------------------------------------
+void LLListener::translate(LLVector3 offset)
+{
+	mPosition += offset;
+}
+
+//-----------------------------------------------------------------------
+void LLListener::setPosition(LLVector3 pos)
+{
+	mPosition = pos;
+}
+
+//-----------------------------------------------------------------------
+LLVector3 LLListener::getPosition(void)
+{
+	return(mPosition);
+}
+
+//-----------------------------------------------------------------------
+LLVector3 LLListener::getAt(void)
+{
+	return(mListenAt);
+}
+
+//-----------------------------------------------------------------------
+LLVector3 LLListener::getUp(void)
+{
+	return(mListenUp);
+}
+
+//-----------------------------------------------------------------------
+void LLListener::setVelocity(LLVector3 vel)
+{
+	mVelocity = vel;
+}
+
+//-----------------------------------------------------------------------
+void LLListener::orient(LLVector3 up, LLVector3 at)
+{
+	mListenUp = up;
+	mListenAt = at;
+}
+
+//-----------------------------------------------------------------------
+void LLListener::set(LLVector3 pos, LLVector3 vel, LLVector3 up, LLVector3 at)
+{
+	mPosition = pos;
+	mVelocity = vel;
+
+	setPosition(pos);
+	setVelocity(vel);
+	orient(up,at);
+}
+
+//-----------------------------------------------------------------------
+void LLListener::setDopplerFactor(F32 factor)
+{
+}
+
+//-----------------------------------------------------------------------
+F32 LLListener::getDopplerFactor()
+{
+	return (1.f);
+}
+
+//-----------------------------------------------------------------------
+void LLListener::setRolloffFactor(F32 factor)
+{
+}
+
+//-----------------------------------------------------------------------
+F32 LLListener::getRolloffFactor()
+{
+	return (1.f);
+}
+
+//-----------------------------------------------------------------------
+void LLListener::commitDeferredChanges()
+{
+}
+

indra/llaudio/lllistener.h

@@ -0,0 +1,78 @@
+/** 
+ * @file listener.h
+ * @brief Description of LISTENER base class abstracting the audio support.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LISTENER_H
+#define LL_LISTENER_H
+
+#include "v3math.h"
+
+class LLListener 
+{
+ private:
+ protected:
+	LLVector3 mPosition;
+	LLVector3 mVelocity;
+	LLVector3 mListenAt;
+	LLVector3 mListenUp;
+
+ public:
+
+ private:
+ protected:
+ public:  
+	LLListener();
+	virtual ~LLListener();
+	virtual void init();  
+
+	virtual void set(LLVector3 pos, LLVector3 vel, LLVector3 up, LLVector3 at);
+
+	virtual void setPosition(LLVector3 pos);
+	virtual void setVelocity(LLVector3 vel);
+
+	virtual void orient(LLVector3 up, LLVector3 at);
+	virtual void translate(LLVector3 offset);
+
+	virtual void setDopplerFactor(F32 factor);
+	virtual void setRolloffFactor(F32 factor);
+
+	virtual LLVector3 getPosition();
+	virtual LLVector3 getAt();
+	virtual LLVector3 getUp();
+
+	virtual F32 getDopplerFactor();
+	virtual F32 getRolloffFactor();
+
+	virtual void commitDeferredChanges();
+};
+
+#endif
+

indra/llaudio/lllistener_ds3d.h

@@ -0,0 +1,74 @@
+/** 
+ * @file listener_ds3d.h
+ * @brief Description of LISTENER class abstracting the audio support
+ * as a DirectSound 3D implementation (windows only)
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LISTENER_DS3D_H
+#define LL_LISTENER_DS3D_H
+
+#include "lllistener.h"
+
+#include <dmusici.h>
+#include <dsound.h>
+#include <ks.h>
+
+class LLListener_DS3D : public LLListener
+{
+ private:
+ protected:
+	IDirectSound3DListener8 *m3DListener;
+ public:
+
+ private:
+ protected:
+ public:  
+	LLListener_DS3D();
+	virtual ~LLListener_DS3D();
+	virtual void init();  
+
+	virtual void setDS3DLPtr (IDirectSound3DListener8 *listener_p);
+
+	virtual void translate(LLVector3 offset);
+	virtual void setPosition(LLVector3 pos);
+	virtual void setVelocity(LLVector3 vel);
+	virtual void orient(LLVector3 up, LLVector3 at);
+
+	virtual void setDopplerFactor(F32 factor);
+	virtual F32 getDopplerFactor();
+	virtual void setRolloffFactor(F32 factor);
+	virtual F32 getRolloffFactor();
+
+	virtual void commitDeferredChanges();
+};
+
+#endif
+
+

indra/llaudio/lllistener_fmod.cpp

@@ -0,0 +1,131 @@
+/** 
+ * @file listener_fmod.cpp
+ * @brief implementation of LISTENER class abstracting the audio
+ * support as a FMOD 3D implementation (windows only)
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llaudioengine.h"
+#include "lllistener_fmod.h"
+#include "fmod.h"
+
+//-----------------------------------------------------------------------
+// constructor
+//-----------------------------------------------------------------------
+LLListener_FMOD::LLListener_FMOD()
+{
+	init();
+}
+
+//-----------------------------------------------------------------------
+LLListener_FMOD::~LLListener_FMOD()
+{
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::init(void)
+{
+	// do inherited
+	LLListener::init();
+	mDopplerFactor = 1.0f;
+	mRolloffFactor = 1.0f;
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::translate(LLVector3 offset)
+{
+	LLListener::translate(offset);
+
+	FSOUND_3D_Listener_SetAttributes(mPosition.mV, NULL, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::setPosition(LLVector3 pos)
+{
+	LLListener::setPosition(pos);
+
+	FSOUND_3D_Listener_SetAttributes(pos.mV, NULL, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::setVelocity(LLVector3 vel)
+{
+	LLListener::setVelocity(vel);
+
+	FSOUND_3D_Listener_SetAttributes(NULL, vel.mV, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::orient(LLVector3 up, LLVector3 at)
+{
+	LLListener::orient(up, at);
+
+	// Welcome to the transition between right and left
+	// (coordinate systems, that is)
+	// Leaving the at vector alone results in a L/R reversal
+	// since DX is left-handed and we (LL, OpenGL, OpenAL) are right-handed
+	at = -at;
+
+	FSOUND_3D_Listener_SetAttributes(NULL, NULL, at.mV[0],at.mV[1],at.mV[2], up.mV[0],up.mV[1],up.mV[2]);
+}
+
+//-----------------------------------------------------------------------
+void LLListener_FMOD::commitDeferredChanges()
+{
+	FSOUND_Update();
+}
+
+
+void LLListener_FMOD::setRolloffFactor(F32 factor)
+{
+	mRolloffFactor = factor;
+	FSOUND_3D_SetRolloffFactor(factor);
+}
+
+
+F32 LLListener_FMOD::getRolloffFactor()
+{
+	return mRolloffFactor;
+}
+
+
+void LLListener_FMOD::setDopplerFactor(F32 factor)
+{
+	mDopplerFactor = factor;
+	FSOUND_3D_SetDopplerFactor(factor);
+}
+
+
+F32 LLListener_FMOD::getDopplerFactor()
+{
+	return mDopplerFactor;
+}
+
+

indra/llaudio/lllistener_fmod.h

@@ -0,0 +1,64 @@
+/** 
+ * @file listener_fmod.h
+ * @brief Description of LISTENER class abstracting the audio support
+ * as an FMOD 3D implementation (windows and Linux)
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LISTENER_FMOD_H
+#define LL_LISTENER_FMOD_H
+
+#include "lllistener.h"
+
+class LLListener_FMOD : public LLListener
+{
+ public:  
+	LLListener_FMOD();
+	virtual ~LLListener_FMOD();
+	virtual void init();  
+
+	virtual void translate(LLVector3 offset);
+	virtual void setPosition(LLVector3 pos);
+	virtual void setVelocity(LLVector3 vel);
+	virtual void orient(LLVector3 up, LLVector3 at);
+	virtual void commitDeferredChanges();
+
+	virtual void setDopplerFactor(F32 factor);
+	virtual F32 getDopplerFactor();
+	virtual void setRolloffFactor(F32 factor);
+	virtual F32 getRolloffFactor();
+
+ protected:
+	 F32 mDopplerFactor;
+	 F32 mRolloffFactor;
+};
+
+#endif
+
+

indra/llaudio/lllistener_openal.cpp

@@ -0,0 +1,116 @@
+/**
+ * @file audioengine_openal.cpp
+ * @brief implementation of audio engine using OpenAL
+ * support as a OpenAL 3D implementation
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llaudioengine.h"
+
+#include "lllistener_openal.h"
+
+LLListener_OpenAL::LLListener_OpenAL()
+{
+	init();
+}
+
+LLListener_OpenAL::~LLListener_OpenAL()
+{
+}
+
+void LLListener_OpenAL::translate(LLVector3 offset)
+{
+	//llinfos << "LLListener_OpenAL::translate() : " << offset << llendl;
+	LLListener::translate(offset);
+}
+
+void LLListener_OpenAL::setPosition(LLVector3 pos)
+{
+	//llinfos << "LLListener_OpenAL::setPosition() : " << pos << llendl;
+	LLListener::setPosition(pos);
+}
+
+void LLListener_OpenAL::setVelocity(LLVector3 vel)
+{
+	LLListener::setVelocity(vel);
+}
+
+void LLListener_OpenAL::orient(LLVector3 up, LLVector3 at)
+{
+	//llinfos << "LLListener_OpenAL::orient() up: " << up << " at: " << at << llendl;
+	LLListener::orient(up, at);
+}
+
+void LLListener_OpenAL::commitDeferredChanges()
+{
+	ALfloat orientation[6];
+	orientation[0] = mListenAt.mV[0];
+	orientation[1] = mListenAt.mV[1];
+	orientation[2] = mListenAt.mV[2];
+	orientation[3] = mListenUp.mV[0];
+	orientation[4] = mListenUp.mV[1];
+	orientation[5] = mListenUp.mV[2];
+
+	ALfloat velocity[3];
+	velocity[0] = mVelocity.mV[0];
+	velocity[1] = mVelocity.mV[1];
+	velocity[2] = mVelocity.mV[2];
+
+	alListenerfv(AL_ORIENTATION, orientation);
+	alListenerfv(AL_POSITION, mPosition.mV);
+	alListenerfv(AL_VELOCITY, velocity);
+}
+
+void LLListener_OpenAL::setDopplerFactor(F32 factor)
+{
+	//llinfos << "LLListener_OpenAL::setDopplerFactor() : " << factor << llendl;
+	alDopplerFactor(factor);
+}
+
+F32 LLListener_OpenAL::getDopplerFactor()
+{
+	ALfloat factor;
+	factor = alGetFloat(AL_DOPPLER_FACTOR);
+	//llinfos << "LLListener_OpenAL::getDopplerFactor() : " << factor << llendl;
+	return factor;
+}
+
+
+void LLListener_OpenAL::setRolloffFactor(F32 factor)
+{
+	mRolloffFactor = factor;
+}
+
+F32 LLListener_OpenAL::getRolloffFactor()
+{
+	return mRolloffFactor;
+}
+
+

indra/llaudio/lllistener_openal.h

@@ -0,0 +1,64 @@
+/** 
+ * @file listener_openal.h
+ * @brief Description of LISTENER class abstracting the audio support
+ * as an OpenAL implementation
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LISTENER_OPENAL_H
+#define LL_LISTENER_OPENAL_H
+
+#include "lllistener.h"
+
+#include "AL/al.h"
+#include "AL/alut.h"
+
+class LLListener_OpenAL  : public LLListener
+{
+ public:  
+	LLListener_OpenAL();
+	virtual ~LLListener_OpenAL();
+
+	virtual void translate(LLVector3 offset);
+	virtual void setPosition(LLVector3 pos);
+	virtual void setVelocity(LLVector3 vel);
+	virtual void orient(LLVector3 up, LLVector3 at);
+	virtual void commitDeferredChanges();
+
+	virtual void setDopplerFactor(F32 factor);
+	virtual F32 getDopplerFactor();
+	virtual void setRolloffFactor(F32 factor);
+	virtual F32 getRolloffFactor();
+
+ protected:
+	F32 mRolloffFactor;
+};
+
+#endif
+

indra/llaudio/llstreamingaudio.h

@@ -0,0 +1,56 @@
+/** 
+ * @file streamingaudio.h
+ * @author Tofu Linden
+ * @brief Definition of LLStreamingAudioInterface base class abstracting the streaming audio interface
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * 
+ * Copyright (c) 2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_STREAMINGAUDIO_H
+#define LL_STREAMINGAUDIO_H
+
+#include "stdtypes.h" // from llcommon
+
+// Entirely abstract.  Based exactly on the historic API.
+class LLStreamingAudioInterface
+{
+ public:
+	virtual ~LLStreamingAudioInterface() {}
+
+	virtual void start(const std::string& url) = 0;
+	virtual void stop() = 0;
+	virtual void pause(int pause) = 0;
+	virtual void update() = 0;
+	virtual int isPlaying() = 0;
+	// use a value from 0.0 to 1.0, inclusive
+	virtual void setGain(F32 vol) = 0;
+	virtual F32 getGain() = 0;
+	virtual std::string getURL() = 0;
+};
+
+#endif // LL_STREAMINGAUDIO_H

indra/llaudio/llstreamingaudio_fmod.cpp

@@ -0,0 +1,362 @@
+/** 
+ * @file streamingaudio_fmod.cpp
+ * @brief LLStreamingAudio_FMOD implementation
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * 
+ * Copyright (c) 2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llmath.h"
+
+#include "fmod.h"
+#include "fmod_errors.h"
+
+#include "llstreamingaudio_fmod.h"
+
+
+class LLAudioStreamManagerFMOD
+{
+public:
+	LLAudioStreamManagerFMOD(const std::string& url);
+	int	startStream();
+	bool stopStream(); // Returns true if the stream was successfully stopped.
+	bool ready();
+
+	const std::string& getURL() 	{ return mInternetStreamURL; }
+
+	int getOpenState();
+protected:
+	FSOUND_STREAM* mInternetStream;
+	bool mReady;
+
+	std::string mInternetStreamURL;
+};
+
+
+
+//---------------------------------------------------------------------------
+// Internet Streaming
+//---------------------------------------------------------------------------
+LLStreamingAudio_FMOD::LLStreamingAudio_FMOD() :
+	mCurrentInternetStreamp(NULL),
+	mFMODInternetStreamChannel(-1),
+	mGain(1.0f)
+{
+	// Number of milliseconds of audio to buffer for the audio card.
+	// Must be larger than the usual Second Life frame stutter time.
+	FSOUND_Stream_SetBufferSize(200);
+
+	// Here's where we set the size of the network buffer and some buffering 
+	// parameters.  In this case we want a network buffer of 16k, we want it 
+	// to prebuffer 40% of that when we first connect, and we want it 
+	// to rebuffer 80% of that whenever we encounter a buffer underrun.
+
+	// Leave the net buffer properties at the default.
+	//FSOUND_Stream_Net_SetBufferProperties(20000, 40, 80);
+}
+
+
+LLStreamingAudio_FMOD::~LLStreamingAudio_FMOD()
+{
+	// nothing interesting/safe to do.
+}
+
+
+void LLStreamingAudio_FMOD::start(const std::string& url)
+{
+	//if (!mInited)
+	//{
+	//	llwarns << "startInternetStream before audio initialized" << llendl;
+	//	return;
+	//}
+
+	// "stop" stream but don't clear url, etc. in case url == mInternetStreamURL
+	stop();
+
+	if (!url.empty())
+	{
+		llinfos << "Starting internet stream: " << url << llendl;
+		mCurrentInternetStreamp = new LLAudioStreamManagerFMOD(url);
+		mURL = url;
+	}
+	else
+	{
+		llinfos << "Set internet stream to null" << llendl;
+		mURL.clear();
+	}
+}
+
+
+void LLStreamingAudio_FMOD::update()
+{
+	// Kill dead internet streams, if possible
+	std::list<LLAudioStreamManagerFMOD *>::iterator iter;
+	for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
+	{
+		LLAudioStreamManagerFMOD *streamp = *iter;
+		if (streamp->stopStream())
+		{
+			llinfos << "Closed dead stream" << llendl;
+			delete streamp;
+			mDeadStreams.erase(iter++);
+		}
+		else
+		{
+			iter++;
+		}
+	}
+
+	// Don't do anything if there are no streams playing
+	if (!mCurrentInternetStreamp)
+	{
+		return;
+	}
+
+	int open_state = mCurrentInternetStreamp->getOpenState();
+
+	if (!open_state)
+	{
+		// Stream is live
+
+		// start the stream if it's ready
+		if (mFMODInternetStreamChannel < 0)
+		{
+			mFMODInternetStreamChannel = mCurrentInternetStreamp->startStream();
+
+			if (mFMODInternetStreamChannel != -1)
+			{
+				// Reset volume to previously set volume
+				setGain(getGain());
+				FSOUND_SetPaused(mFMODInternetStreamChannel, false);
+			}
+		}
+	}
+		
+	switch(open_state)
+	{
+	default:
+	case 0:
+		// success
+		break;
+	case -1:
+		// stream handle is invalid
+		llwarns << "InternetStream - invalid handle" << llendl;
+		stop();
+		return;
+	case -2:
+		// opening
+		break;
+	case -3:
+		// failed to open, file not found, perhaps
+		llwarns << "InternetSteam - failed to open" << llendl;
+		stop();
+		return;
+	case -4:
+		// connecting
+		break;
+	case -5:
+		// buffering
+		break;
+	}
+
+}
+
+void LLStreamingAudio_FMOD::stop()
+{
+	if (mFMODInternetStreamChannel != -1)
+	{
+		FSOUND_SetPaused(mFMODInternetStreamChannel, true);
+		FSOUND_SetPriority(mFMODInternetStreamChannel, 0);
+		mFMODInternetStreamChannel = -1;
+	}
+
+	if (mCurrentInternetStreamp)
+	{
+		llinfos << "Stopping internet stream: " << mCurrentInternetStreamp->getURL() << llendl;
+		if (mCurrentInternetStreamp->stopStream())
+		{
+			delete mCurrentInternetStreamp;
+		}
+		else
+		{
+			llwarns << "Pushing stream to dead list: " << mCurrentInternetStreamp->getURL() << llendl;
+			mDeadStreams.push_back(mCurrentInternetStreamp);
+		}
+		mCurrentInternetStreamp = NULL;
+		//mURL.clear();
+	}
+}
+
+void LLStreamingAudio_FMOD::pause(int pauseopt)
+{
+	if (pauseopt < 0)
+	{
+		pauseopt = mCurrentInternetStreamp ? 1 : 0;
+	}
+
+	if (pauseopt)
+	{
+		if (mCurrentInternetStreamp)
+		{
+			stop();
+		}
+	}
+	else
+	{
+		start(getURL());
+	}
+}
+
+
+// A stream is "playing" if it has been requested to start.  That
+// doesn't necessarily mean audio is coming out of the speakers.
+int LLStreamingAudio_FMOD::isPlaying()
+{
+	if (mCurrentInternetStreamp)
+	{
+		return 1; // Active and playing
+	}
+	else if (!mURL.empty())
+	{
+		return 2; // "Paused"
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+
+F32 LLStreamingAudio_FMOD::getGain()
+{
+	return mGain;
+}
+
+
+std::string LLStreamingAudio_FMOD::getURL()
+{
+	return mURL;
+}
+
+
+void LLStreamingAudio_FMOD::setGain(F32 vol)
+{
+	mGain = vol;
+
+	if (mFMODInternetStreamChannel != -1)
+	{
+		vol = llclamp(vol, 0.f, 1.f);
+		int vol_int = llround(vol * 255.f);
+		FSOUND_SetVolumeAbsolute(mFMODInternetStreamChannel, vol_int);
+	}
+}
+
+
+///////////////////////////////////////////////////////
+// manager of possibly-multiple internet audio streams
+
+LLAudioStreamManagerFMOD::LLAudioStreamManagerFMOD(const std::string& url) :
+	mInternetStream(NULL),
+	mReady(false)
+{
+	mInternetStreamURL = url;
+	mInternetStream = FSOUND_Stream_Open(url.c_str(), FSOUND_NORMAL | FSOUND_NONBLOCKING, 0, 0);
+	if (!mInternetStream)
+	{
+		llwarns << "Couldn't open fmod stream, error "
+			<< FMOD_ErrorString(FSOUND_GetError())
+			<< llendl;
+		mReady = false;
+		return;
+	}
+
+	mReady = true;
+}
+
+int LLAudioStreamManagerFMOD::startStream()
+{
+	// We need a live and opened stream before we try and play it.
+	if (!mInternetStream || getOpenState())
+	{
+		llwarns << "No internet stream to start playing!" << llendl;
+		return -1;
+	}
+
+	// Make sure the stream is set to 2D mode.
+	FSOUND_Stream_SetMode(mInternetStream, FSOUND_2D);
+
+	return FSOUND_Stream_PlayEx(FSOUND_FREE, mInternetStream, NULL, true);
+}
+
+bool LLAudioStreamManagerFMOD::stopStream()
+{
+	if (mInternetStream)
+	{
+		int read_percent = 0;
+		int status = 0;
+		int bitrate = 0;
+		unsigned int flags = 0x0;
+		FSOUND_Stream_Net_GetStatus(mInternetStream, &status, &read_percent, &bitrate, &flags);
+
+		bool close = true;
+		switch (status)
+		{
+		case FSOUND_STREAM_NET_CONNECTING:
+			close = false;
+			break;
+		case FSOUND_STREAM_NET_NOTCONNECTED:
+		case FSOUND_STREAM_NET_BUFFERING:
+		case FSOUND_STREAM_NET_READY:
+		case FSOUND_STREAM_NET_ERROR:
+		default:
+			close = true;
+		}
+
+		if (close)
+		{
+			FSOUND_Stream_Close(mInternetStream);
+			mInternetStream = NULL;
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+	else
+	{
+		return true;
+	}
+}
+
+int LLAudioStreamManagerFMOD::getOpenState()
+{
+	int open_state = FSOUND_Stream_GetOpenState(mInternetStream);
+	return open_state;
+}

indra/llaudio/llstreamingaudio_fmod.h

@@ -0,0 +1,68 @@
+/** 
+ * @file streamingaudio_fmod.h
+ * @author Tofu Linden
+ * @brief Definition of LLStreamingAudio_FMOD implementation
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * 
+ * Copyright (c) 2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_STREAMINGAUDIO_FMOD_H
+#define LL_STREAMINGAUDIO_FMOD_H
+
+#include "stdtypes.h" // from llcommon
+
+#include "llstreamingaudio.h"
+
+class LLAudioStreamManagerFMOD;
+
+class LLStreamingAudio_FMOD : public LLStreamingAudioInterface
+{
+ public:
+	LLStreamingAudio_FMOD();
+	/*virtual*/ ~LLStreamingAudio_FMOD();
+
+	/*virtual*/ void start(const std::string& url);
+	/*virtual*/ void stop();
+	/*virtual*/ void pause(int pause);
+	/*virtual*/ void update();
+	/*virtual*/ int isPlaying();
+	/*virtual*/ void setGain(F32 vol);
+	/*virtual*/ F32 getGain();
+	/*virtual*/ std::string getURL();
+
+private:
+	LLAudioStreamManagerFMOD *mCurrentInternetStreamp;
+	int mFMODInternetStreamChannel;
+	std::list<LLAudioStreamManagerFMOD *> mDeadStreams;
+
+	std::string mURL;
+	F32 mGain;
+};
+
+
+#endif // LL_STREAMINGAUDIO_FMOD_H

indra/llaudio/llvorbisdecode.cpp

@@ -0,0 +1,326 @@
+/** 
+ * @file vorbisdecode.cpp
+ * @brief Vorbis decoding routine routine for Indra.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "vorbis/codec.h"
+#include "vorbis/vorbisfile.h"
+#include "llerror.h"
+#include "llmath.h"
+#include "llvfile.h"
+
+#if 0
+
+size_t vfs_read(void *ptr, size_t size, size_t nmemb, void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	if (size > 0 && file->read((U8*)ptr, size * nmemb))	/*Flawfinder: ignore*/
+	{
+		S32 read = file->getLastBytesRead();
+		return  read / size;	/*Flawfinder: ignore*/
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+int vfs_seek(void *datasource, ogg_int64_t offset, int whence)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	// vfs has 31-bit files
+	if (offset > S32_MAX)
+	{
+		return -1;
+	}
+
+	S32 origin;
+	switch (whence) {
+	case SEEK_SET:
+		origin = 0;
+		break;
+	case SEEK_END:
+		origin = file->getSize();
+		break;
+	case SEEK_CUR:
+		origin = -1;
+		break;
+	default:
+		llerrs << "Invalid whence argument to vfs_seek" << llendl;
+		return -1;
+	}
+
+	if (file->seek((S32)offset, origin))
+	{
+		return 0;
+	}
+	else
+	{
+		return -1;
+	}
+}
+
+int vfs_close (void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	delete file;
+
+	return 0;
+}
+
+long vfs_tell (void *datasource)
+{
+	LLVFile *file = (LLVFile *)datasource;
+
+	return file->tell();
+}
+
+
+BOOL decode_vorbis_file(LLVFS *vfs, const LLUUID &in_uuid, char *out_fname)
+{
+	ov_callbacks vfs_callbacks;
+	vfs_callbacks.read_func = vfs_read;
+	vfs_callbacks.seek_func = vfs_seek;
+	vfs_callbacks.close_func = vfs_close;
+	vfs_callbacks.tell_func = vfs_tell;
+
+	char pcmout[4096]; /*Flawfinder: ignore*/
+
+	unsigned char temp[64];	/*Flawfinder: ignore*/
+
+	LLVFile *in_vfile;
+
+	U32 data_length = 0;
+
+	llinfos << "Vorbis decode from vfile: " << in_uuid << llendl;
+
+	in_vfile = new LLVFile(vfs, in_uuid, LLAssetType::AT_SOUND);
+	if (! in_vfile->getSize())
+	{
+		llwarning("unable to open vorbis source vfile for reading",0);
+		return(FALSE);
+	}
+
+	//**********************************
+	LLAPRFile outfile ;
+	outfile.open(out_fname,LL_APR_WPB);
+	//**********************************
+	if (!outfile.getFileHandle())
+	{
+		llwarning("unable to open vorbis destination file for writing",0);
+		return(FALSE);		
+	}
+	else
+	{
+		// write the .wav format header
+		//"RIFF"
+		temp[0] = 0x52;
+		temp[1] = 0x49;
+		temp[2] = 0x46;
+		temp[3] = 0x46;
+		
+		// length = datalen + 36 (to be filled in later)
+		temp[4] = 0x00;
+		temp[5] = 0x00;
+		temp[6] = 0x00;
+		temp[7] = 0x00;
+		
+		//"WAVE"
+		temp[8] = 0x57;
+		temp[9] = 0x41;
+		temp[10] = 0x56;
+		temp[11] = 0x45;
+
+		// "fmt "
+		temp[12] = 0x66;
+		temp[13] = 0x6D;
+		temp[14] = 0x74;
+		temp[15] = 0x20;
+
+		// chunk size = 16
+		temp[16] = 0x10;
+		temp[17] = 0x00;
+		temp[18] = 0x00;
+		temp[19] = 0x00;
+
+		// format (1 = PCM)
+		temp[20] = 0x01;
+		temp[21] = 0x00;
+
+		// number of channels
+		temp[22] = 0x01;
+		temp[23] = 0x00;
+
+		// samples per second
+		temp[24] = 0x44;
+		temp[25] = 0xAC;
+		temp[26] = 0x00;
+		temp[27] = 0x00;
+
+		// average bytes per second
+		temp[28] = 0x88;
+		temp[29] = 0x58;
+		temp[30] = 0x01;
+		temp[31] = 0x00;
+
+		// bytes to output at a single time
+		temp[32] = 0x02;
+		temp[33] = 0x00;
+		 
+		// 16 bits per sample
+		temp[34] = 0x10;
+		temp[35] = 0x00;
+
+		// "data"
+		temp[36] = 0x64;
+		temp[37] = 0x61;
+		temp[38] = 0x74;
+		temp[39] = 0x61;
+
+
+		// these are the length of the data chunk, to be filled in later
+		temp[40] = 0x00;
+		temp[41] = 0x00;
+		temp[42] = 0x00;
+		temp[43] = 0x00;
+
+		outfile.write(temp, 44);
+	}
+
+	OggVorbis_File vf;
+	int eof=0;
+	int current_section;
+ 
+	int r = ov_open_callbacks(in_vfile, &vf, NULL, 0, vfs_callbacks);
+	if(r < 0) 
+	{
+		llwarns << r << " Input to vorbis decode does not appear to be an Ogg bitstream: " << in_uuid << llendl;		
+		return(FALSE);
+	}
+
+	{
+		char **ptr=ov_comment(&vf,-1)->user_comments;
+//		vorbis_info *vi=ov_info(&vf,-1);
+		while(*ptr){
+			fprintf(stderr,"%s\n",*ptr);
+			++ptr;
+		}
+//    fprintf(stderr,"\nBitstream is %d channel, %ldHz\n",vi->channels,vi->rate);
+//    fprintf(stderr,"\nDecoded length: %ld samples\n", (long)ov_pcm_total(&vf,-1));
+//    fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor);
+	}
+  
+	while(!eof){
+		long ret=ov_read(&vf,pcmout,sizeof(pcmout),0,2,1,&current_section);
+		if (ret == 0) {
+			/* EOF */
+			eof=1;
+//			llinfos << "Vorbis EOF" << llendl;
+		} else if (ret < 0) {
+			/* error in the stream.  Not a problem, just reporting it in
+			   case we (the app) cares.  In this case, we don't. */
+			llwarning("Error in vorbis stream",0); 
+			break;
+
+		} else {
+//			llinfos << "Vorbis read " << ret << "bytes" << llendl;
+			/* we don't bother dealing with sample rate changes, etc, but.
+			   you'll have to*/
+			data_length += outfile.write(pcmout, ret);
+		}
+	}
+
+	ov_clear(&vf);
+  
+	// write "data" chunk length
+	outfile.seek(APR_SET,40);
+	outfile.write(&data_length,4);
+ 
+	// write overall "RIFF" length
+	data_length += 36;
+	outfile.seek(APR_SET,4);
+	outfile.write(&data_length,1*4);
+
+	// FUCK!!! Vorbis encode/decode messes up loop point transitions (pop)
+	// do a cheap-and-cheesy crossfade 
+	
+
+	S16 *samplep;
+	S32 i;
+	S32 fade_length;
+
+	fade_length = llmin((S32)128,(S32)(data_length-36)/8);
+	
+	outfile.seek(APR_SET,44);
+	outfile.read(pcmout,2*fade_length);  //read first 16 samples
+
+	samplep = (S16 *)pcmout;
+
+	for (i = 0 ;i < fade_length; i++)
+	{
+		*samplep++ = ((F32)*samplep * ((F32)i/(F32)fade_length));	   
+	}
+	
+	outfile.seek(APR_SET,44);
+	outfile.write(pcmout,2*fade_length);  //write back xfaded first 16 samples
+
+	outfile.seek(APR_END,-fade_length*2); 
+	outfile.read(pcmout,2*fade_length);  //read last 16 samples
+
+	samplep = (S16 *)pcmout;
+
+	for (i = fade_length-1 ; i >=  0; i--)
+	{
+		*samplep++ = ((F32)*samplep * ((F32)i/(F32)fade_length));	   
+	}
+	
+	outfile.seek(SEEK_END,-fade_length*2); 
+	outfile.write(pcmout,2*fade_length);  //write back xfaded last 16 samples
+	//*******************
+	outfile.close();
+	//*******************
+	
+	if ((36 == data_length) || (!(eof)))
+	{
+		llwarning("BAD Vorbis DECODE!, removing .wav!",0); 
+		LLFile::remove(out_fname);
+		return (FALSE);
+	}
+    
+//	fprintf(stderr,"Done.\n");
+
+	return(TRUE);
+}
+#endif

indra/llaudio/llvorbisdecode.h

@@ -0,0 +1,42 @@
+/** 
+ * @file vorbisdecode.h
+ * @brief Vorbis decoding routine routine for Indra.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_VORBISDECODE_H
+#define LL_VORBISDECODE_H
+
+class LLVFS;
+class LLUUID;
+
+BOOL decode_vorbis_file(LLVFS *vfs, const LLUUID &in_uuid, char *out_fname);
+
+#endif
+

indra/llaudio/llvorbisencode.cpp

@@ -0,0 +1,505 @@
+/** 
+ * @file vorbisencode.cpp
+ * @brief Vorbis encoding routine routine for Indra.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "vorbis/vorbisenc.h"
+
+#include "llvorbisencode.h"
+#include "llerror.h"
+#include "llrand.h"
+#include "llmath.h"
+#include "llapr.h"
+
+//#if LL_DARWIN
+// MBW -- XXX -- Getting rid of SecondLifeVorbis for now -- no fmod means no name collisions.
+#if 0
+#include "VorbisFramework.h"
+
+#define vorbis_analysis				mac_vorbis_analysis
+#define vorbis_analysis_headerout	mac_vorbis_analysis_headerout
+#define vorbis_analysis_init		mac_vorbis_analysis_init
+#define vorbis_encode_ctl			mac_vorbis_encode_ctl
+#define vorbis_encode_setup_init	mac_vorbis_encode_setup_init
+#define vorbis_encode_setup_managed	mac_vorbis_encode_setup_managed
+
+#define	vorbis_info_init			mac_vorbis_info_init
+#define	vorbis_info_clear			mac_vorbis_info_clear
+#define	vorbis_comment_init			mac_vorbis_comment_init
+#define	vorbis_comment_clear		mac_vorbis_comment_clear
+#define	vorbis_block_init			mac_vorbis_block_init
+#define	vorbis_block_clear			mac_vorbis_block_clear
+#define	vorbis_dsp_clear			mac_vorbis_dsp_clear
+#define	vorbis_analysis_buffer		mac_vorbis_analysis_buffer
+#define	vorbis_analysis_wrote		mac_vorbis_analysis_wrote
+#define	vorbis_analysis_blockout	mac_vorbis_analysis_blockout
+
+#define ogg_stream_packetin			mac_ogg_stream_packetin
+#define	ogg_stream_init				mac_ogg_stream_init
+#define	ogg_stream_flush			mac_ogg_stream_flush
+#define	ogg_stream_pageout			mac_ogg_stream_pageout
+#define	ogg_page_eos				mac_ogg_page_eos
+#define	ogg_stream_clear			mac_ogg_stream_clear
+
+#endif
+
+S32 check_for_invalid_wav_formats(const std::string& in_fname, std::string& error_msg)
+{
+	U16 num_channels = 0;
+	U32 sample_rate = 0;
+	U32 bits_per_sample = 0;
+	U32 physical_file_size = 0;
+	U32 chunk_length = 0;
+	U32 raw_data_length = 0;
+	U32 bytes_per_sec = 0;
+	BOOL uncompressed_pcm = FALSE;
+
+	unsigned char wav_header[44];		/*Flawfinder: ignore*/
+
+	error_msg.clear();
+
+	//********************************
+	LLAPRFile infile ;
+    infile.open(in_fname,LL_APR_RB, LLAPRFile::global);
+	//********************************
+	if (!infile.getFileHandle())
+	{
+		error_msg = "CannotUploadSoundFile";
+		return(LLVORBISENC_SOURCE_OPEN_ERR);
+	}
+
+	infile.read(wav_header, 44);
+	physical_file_size = infile.seek(APR_END,0);
+
+	if (strncmp((char *)&(wav_header[0]),"RIFF",4))
+	{
+		error_msg = "SoundFileNotRIFF";
+		return(LLVORBISENC_WAV_FORMAT_ERR);
+	}
+
+	if (strncmp((char *)&(wav_header[8]),"WAVE",4))
+	{
+		error_msg = "SoundFileNotRIFF";
+		return(LLVORBISENC_WAV_FORMAT_ERR);
+	}
+	
+	// parse the chunks
+	
+	U32 file_pos = 12;  // start at the first chunk (usually fmt but not always)
+	
+	while ((file_pos + 8)< physical_file_size)
+	{
+		infile.seek(APR_SET,file_pos);
+		infile.read(wav_header, 44);
+
+		chunk_length = ((U32) wav_header[7] << 24) 
+			+ ((U32) wav_header[6] << 16) 
+			+ ((U32) wav_header[5] << 8) 
+			+ wav_header[4];
+
+//		llinfos << "chunk found: '" << wav_header[0] << wav_header[1] << wav_header[2] << wav_header[3] << "'" << llendl;
+
+		if (!(strncmp((char *)&(wav_header[0]),"fmt ",4)))
+		{
+			if ((wav_header[8] == 0x01) && (wav_header[9] == 0x00))
+			{
+				uncompressed_pcm = TRUE;
+			}
+			num_channels = ((U16) wav_header[11] << 8) + wav_header[10];
+			sample_rate = ((U32) wav_header[15] << 24) 
+				+ ((U32) wav_header[14] << 16) 
+				+ ((U32) wav_header[13] << 8) 
+				+ wav_header[12];
+			bits_per_sample = ((U16) wav_header[23] << 8) + wav_header[22];
+			bytes_per_sec = ((U32) wav_header[19] << 24) 
+				+ ((U32) wav_header[18] << 16) 
+				+ ((U32) wav_header[17] << 8) 
+				+ wav_header[16];
+		}
+		else if (!(strncmp((char *)&(wav_header[0]),"data",4)))
+		{
+			raw_data_length = chunk_length;			
+		}
+		file_pos += (chunk_length + 8);
+		chunk_length = 0;
+	} 
+	//****************
+	infile.close();
+	//****************
+
+	if (!uncompressed_pcm)
+	{	
+		 error_msg = "SoundFileNotPCM";
+		  return(LLVORBISENC_PCM_FORMAT_ERR);
+	}
+	
+	if ((num_channels < 1) || (num_channels > LLVORBIS_CLIP_MAX_CHANNELS))
+	{	
+		error_msg = "SoundFileInvalidChannelCount";
+		return(LLVORBISENC_MULTICHANNEL_ERR);
+	}
+
+	if (sample_rate != LLVORBIS_CLIP_SAMPLE_RATE)
+	{	
+		error_msg = "SoundFileInvalidSampleRate";
+		return(LLVORBISENC_UNSUPPORTED_SAMPLE_RATE);
+	}
+	
+	if ((bits_per_sample != 16) && (bits_per_sample != 8))
+	{		 
+		error_msg = "SoundFileInvalidWordSize";
+		return(LLVORBISENC_UNSUPPORTED_WORD_SIZE);
+	}
+
+	if (!raw_data_length)
+	{
+		error_msg = "SoundFileInvalidHeader";
+		return(LLVORBISENC_CLIP_TOO_LONG);		 
+	}
+
+	F32 clip_length = (F32)raw_data_length/(F32)bytes_per_sec;
+		
+	if (clip_length > LLVORBIS_CLIP_MAX_TIME)
+	{
+		error_msg = "SoundFileInvalidTooLong";
+		return(LLVORBISENC_CLIP_TOO_LONG);		 
+	}
+
+    return(LLVORBISENC_NOERR);
+}
+
+S32 encode_vorbis_file(const std::string& in_fname, const std::string& out_fname)
+{
+#define READ_BUFFER 1024
+	unsigned char readbuffer[READ_BUFFER*4+44];   /* out of the data segment, not the stack */	/*Flawfinder: ignore*/
+
+	ogg_stream_state os; /* take physical pages, weld into a logical stream of packets */
+	ogg_page         og; /* one Ogg bitstream page.  Vorbis packets are inside */
+	ogg_packet       op; /* one raw packet of data for decode */
+	
+	vorbis_info      vi; /* struct that stores all the static vorbis bitstream settings */
+	vorbis_comment   vc; /* struct that stores all the user comments */
+	
+	vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
+	vorbis_block     vb; /* local working space for packet->PCM decode */
+	
+	int eos=0;
+	int result;
+
+	U16 num_channels = 0;
+	U32 sample_rate = 0;
+	U32 bits_per_sample = 0;
+
+	S32 format_error = 0;
+	std::string error_msg;
+	if ((format_error = check_for_invalid_wav_formats(in_fname, error_msg)))
+	{
+		llwarns << error_msg << ": " << in_fname << llendl;
+		return(format_error);
+	}
+
+#if 1
+	unsigned char wav_header[44];	/*Flawfinder: ignore*/
+
+	S32 data_left = 0;
+
+	LLAPRFile infile ;
+	infile.open(in_fname,LL_APR_RB, LLAPRFile::global);
+	if (!infile.getFileHandle())
+	{
+		llwarns << "Couldn't open temporary ogg file for writing: " << in_fname
+			<< llendl;
+		return(LLVORBISENC_SOURCE_OPEN_ERR);
+	}
+
+	LLAPRFile outfile ;
+	outfile.open(out_fname,LL_APR_WPB, LLAPRFile::global);
+	if (!outfile.getFileHandle())
+	{
+		llwarns << "Couldn't open upload sound file for reading: " << in_fname
+			<< llendl;
+		return(LLVORBISENC_DEST_OPEN_ERR);
+	}
+	
+	 // parse the chunks
+	 U32 chunk_length = 0;
+	 U32 file_pos = 12;  // start at the first chunk (usually fmt but not always)
+	 
+	 while (infile.eof() != APR_EOF)
+	 {
+		 infile.seek(APR_SET,file_pos);
+		 infile.read(wav_header, 44);
+		 
+		 chunk_length = ((U32) wav_header[7] << 24) 
+			 + ((U32) wav_header[6] << 16) 
+			 + ((U32) wav_header[5] << 8) 
+			 + wav_header[4];
+		 
+//		 llinfos << "chunk found: '" << wav_header[0] << wav_header[1] << wav_header[2] << wav_header[3] << "'" << llendl;
+		 
+		 if (!(strncmp((char *)&(wav_header[0]),"fmt ",4)))
+		 {
+			 num_channels = ((U16) wav_header[11] << 8) + wav_header[10];
+			 sample_rate = ((U32) wav_header[15] << 24) 
+				 + ((U32) wav_header[14] << 16) 
+				 + ((U32) wav_header[13] << 8) 
+				 + wav_header[12];
+			 bits_per_sample = ((U16) wav_header[23] << 8) + wav_header[22];
+		 }
+	 	 else if (!(strncmp((char *)&(wav_header[0]),"data",4)))
+		 {
+			 infile.seek(APR_SET,file_pos+8);
+			 // leave the file pointer at the beginning of the data chunk data
+			 data_left = chunk_length;			
+			 break;
+		 }
+		 file_pos += (chunk_length + 8);
+		 chunk_length = 0;
+	 } 
+	 
+
+	 /********** Encode setup ************/
+	 
+	 /* choose an encoding mode */
+	 /* (mode 0: 44kHz stereo uncoupled, roughly 128kbps VBR) */
+	 vorbis_info_init(&vi);
+
+	 // always encode to mono
+
+	 // SL-52913 & SL-53779 determined this quality level to be our 'good
+	 // enough' general-purpose quality level with a nice low bitrate.
+	 // Equivalent to oggenc -q0.5
+	 F32 quality = 0.05f;
+//	 quality = (bitrate==128000 ? 0.4f : 0.1);
+
+//	 if (vorbis_encode_init(&vi, /* num_channels */ 1 ,sample_rate, -1, bitrate, -1))
+	 if (vorbis_encode_init_vbr(&vi, /* num_channels */ 1 ,sample_rate, quality))
+//	 if (vorbis_encode_setup_managed(&vi,1,sample_rate,-1,bitrate,-1) ||
+//		vorbis_encode_ctl(&vi,OV_ECTL_RATEMANAGE_AVG,NULL) ||
+//		vorbis_encode_setup_init(&vi))
+	{
+		llwarns << "unable to initialize vorbis codec at quality " << quality << llendl;
+		//		llwarns << "unable to initialize vorbis codec at bitrate " << bitrate << llendl;
+		return(LLVORBISENC_DEST_OPEN_ERR);
+	}
+	 
+	 /* add a comment */
+	 vorbis_comment_init(&vc);
+//	 vorbis_comment_add(&vc,"Linden");
+	 
+	 /* set up the analysis state and auxiliary encoding storage */
+	 vorbis_analysis_init(&vd,&vi);
+	 vorbis_block_init(&vd,&vb);
+	 
+	 /* set up our packet->stream encoder */
+	 /* pick a random serial number; that way we can more likely build
+		chained streams just by concatenation */
+	 ogg_stream_init(&os, ll_rand());
+	 
+	 /* Vorbis streams begin with three headers; the initial header (with
+		most of the codec setup parameters) which is mandated by the Ogg
+		bitstream spec.  The second header holds any comment fields.  The
+		third header holds the bitstream codebook.  We merely need to
+		make the headers, then pass them to libvorbis one at a time;
+		libvorbis handles the additional Ogg bitstream constraints */
+	 
+	 {
+		 ogg_packet header;
+		 ogg_packet header_comm;
+		 ogg_packet header_code;
+		 
+		 vorbis_analysis_headerout(&vd,&vc,&header,&header_comm,&header_code);
+		 ogg_stream_packetin(&os,&header); /* automatically placed in its own
+											  page */
+		 ogg_stream_packetin(&os,&header_comm);
+		 ogg_stream_packetin(&os,&header_code);
+		 
+		 /* We don't have to write out here, but doing so makes streaming 
+		  * much easier, so we do, flushing ALL pages. This ensures the actual
+		  * audio data will start on a new page
+		  */
+		 while(!eos){
+			 int result=ogg_stream_flush(&os,&og);
+			 if(result==0)break;
+			 outfile.write(og.header, og.header_len);
+			 outfile.write(og.body, og.body_len);
+		 }
+		 
+	 }
+	 
+	 
+	 while(!eos)
+	 {
+		 long bytes_per_sample = bits_per_sample/8;
+
+		 long bytes=(long)infile.read(readbuffer,llclamp((S32)(READ_BUFFER*num_channels*bytes_per_sample),0,data_left)); /* stereo hardwired here */
+		 
+		 if (bytes==0)
+		 {
+			 /* end of file.  this can be done implicitly in the mainline,
+				but it's easier to see here in non-clever fashion.
+				Tell the library we're at end of stream so that it can handle
+				the last frame and mark end of stream in the output properly */
+
+			 vorbis_analysis_wrote(&vd,0);
+//			 eos = 1;
+			 
+		 }
+		 else
+		 {
+			 long i;
+			 long samples;
+			 int temp;
+
+			 data_left -= bytes;
+             /* data to encode */
+			 
+			 /* expose the buffer to submit data */
+			 float **buffer=vorbis_analysis_buffer(&vd,READ_BUFFER);
+			
+			 i = 0;
+			 samples = bytes / (num_channels * bytes_per_sample);
+
+			 if (num_channels == 2)
+			 {
+				 if (bytes_per_sample == 2)
+				 {
+					 /* uninterleave samples */
+					 for(i=0; i<samples ;i++)
+					 {
+					 	 temp =  ((signed char *)readbuffer)[i*4+1];	/*Flawfinder: ignore*/
+						 temp += ((signed char *)readbuffer)[i*4+3];	/*Flawfinder: ignore*/
+						 temp <<= 8;
+						 temp += readbuffer[i*4];
+						 temp += readbuffer[i*4+2];
+
+						 buffer[0][i] = ((float)temp) / 65536.f;
+					 }
+				 }
+				 else // presume it's 1 byte per which is unsigned (F#@%ing wav "standard")
+				 {
+					 /* uninterleave samples */
+					 for(i=0; i<samples ;i++)
+					 {
+					 	 temp  = readbuffer[i*2+0];
+						 temp += readbuffer[i*2+1];
+						 temp -= 256;
+						 buffer[0][i] = ((float)temp) / 256.f;
+					 }
+				 } 
+			 }
+			 else if (num_channels == 1)
+			 {
+				 if (bytes_per_sample == 2)
+				 {
+					 for(i=0; i < samples ;i++)
+					 {
+					 	 temp = ((signed char*)readbuffer)[i*2+1];
+						 temp <<= 8;
+						 temp += readbuffer[i*2];
+						 buffer[0][i] = ((float)temp) / 32768.f;
+					 }
+				 }
+				 else // presume it's 1 byte per which is unsigned (F#@%ing wav "standard")
+				 {
+					 for(i=0; i < samples ;i++)
+					 {
+						 temp = readbuffer[i];
+						 temp -= 128;
+						 buffer[0][i] = ((float)temp) / 128.f;
+					 }
+				 }
+			 }
+				
+			 /* tell the library how much we actually submitted */
+			 vorbis_analysis_wrote(&vd,i);
+		 }
+			 
+		 /* vorbis does some data preanalysis, then divvies up blocks for
+			more involved (potentially parallel) processing.  Get a single
+			block for encoding now */
+		 while(vorbis_analysis_blockout(&vd,&vb)==1)
+		 {
+			 
+			 /* analysis */
+			/* Do the main analysis, creating a packet */
+			vorbis_analysis(&vb, NULL);
+			vorbis_bitrate_addblock(&vb);
+
+			while(vorbis_bitrate_flushpacket(&vd, &op)) 
+			{
+			 
+			 /* weld the packet into the bitstream */
+			 ogg_stream_packetin(&os,&op);
+			 
+			 /* write out pages (if any) */
+			 while(!eos)
+			 {
+				 result = ogg_stream_pageout(&os,&og);
+
+				 if(result==0)
+				 	break;
+
+				 outfile.write(og.header, og.header_len);
+				 outfile.write(og.body, og.body_len);
+				 
+				 /* this could be set above, but for illustrative purposes, I do
+					it here (to show that vorbis does know where the stream ends) */
+				 
+				 if(ogg_page_eos(&og))
+				 	eos=1;
+				 
+			 }
+			}
+		 }
+	 }
+	 
+	 
+	 
+	 /* clean up and exit.  vorbis_info_clear() must be called last */
+	 
+	 ogg_stream_clear(&os);
+	 vorbis_block_clear(&vb);
+	 vorbis_dsp_clear(&vd);
+	 vorbis_comment_clear(&vc);
+	 vorbis_info_clear(&vi);
+	 
+	 /* ogg_page and ogg_packet structs always point to storage in
+		libvorbis.  They're never freed or manipulated directly */
+	 
+//	 fprintf(stderr,"Vorbis encoding: Done.\n");
+	 llinfos << "Vorbis encoding: Done." << llendl;
+	 
+#endif
+	 return(LLVORBISENC_NOERR);
+	 
+}

indra/llaudio/llvorbisencode.h

@@ -0,0 +1,64 @@
+/** 
+ * @file vorbisencode.h
+ * @brief Vorbis encoding routine routine for Indra.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_VORBISENCODE_H
+#define LL_VORBISENCODE_H
+
+const S32 LLVORBISENC_NOERR                        = 0; // no error
+const S32 LLVORBISENC_SOURCE_OPEN_ERR              = 1; // error opening source
+const S32 LLVORBISENC_DEST_OPEN_ERR                = 2; // error opening destination
+const S32 LLVORBISENC_WAV_FORMAT_ERR               = 3; // not a WAV
+const S32 LLVORBISENC_PCM_FORMAT_ERR               = 4; // not a PCM
+const S32 LLVORBISENC_MONO_ERR                     = 5; // can't do mono
+const S32 LLVORBISENC_STEREO_ERR                   = 6; // can't do stereo
+const S32 LLVORBISENC_MULTICHANNEL_ERR             = 7; // can't do stereo
+const S32 LLVORBISENC_UNSUPPORTED_SAMPLE_RATE      = 8; // unsupported sample rate
+const S32 LLVORBISENC_UNSUPPORTED_WORD_SIZE        = 9; // unsupported word size
+const S32 LLVORBISENC_CLIP_TOO_LONG                = 10; // source file is too long
+
+const F32 LLVORBIS_CLIP_MAX_TIME				= 10.0f;
+const U8  LLVORBIS_CLIP_MAX_CHANNELS			= 2;
+const U32 LLVORBIS_CLIP_SAMPLE_RATE				= 44100;
+const U32 LLVORBIS_CLIP_MAX_SAMPLES_PER_CHANNEL	= (U32)(LLVORBIS_CLIP_MAX_TIME * LLVORBIS_CLIP_SAMPLE_RATE);
+const U32 LLVORBIS_CLIP_MAX_SAMPLES				= LLVORBIS_CLIP_MAX_SAMPLES_PER_CHANNEL * LLVORBIS_CLIP_MAX_CHANNELS;
+const size_t LLVORBIS_CLIP_MAX_SAMPLE_DATA		= LLVORBIS_CLIP_MAX_SAMPLES * 2; // 2 = 16-bit
+
+// Treat anything this long as a bad asset. A little fudge factor at the end:
+// Make that a lot of fudge factor. We're allowing 30 sec for now - 3x legal upload
+const size_t LLVORBIS_CLIP_REJECT_SAMPLES		= LLVORBIS_CLIP_MAX_SAMPLES * 3;
+const size_t LLVORBIS_CLIP_REJECT_SIZE			= LLVORBIS_CLIP_MAX_SAMPLE_DATA * 3;
+
+S32 check_for_invalid_wav_formats(const std::string& in_fname, std::string& error_msg);
+S32 encode_vorbis_file(const std::string& in_fname, const std::string& out_fname);
+
+#endif
+

indra/llaudio/llwindgen.h

@@ -0,0 +1,181 @@
+/** 
+ * @file windgen.h
+ * @brief Templated wind noise generation
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+#ifndef WINDGEN_H
+#define WINDGEN_H
+
+#include "llcommon.h"
+
+template <class MIXBUFFERFORMAT_T>
+class LLWindGen
+{
+public:
+	LLWindGen(const U32 sample_rate = 44100) :
+		mTargetGain(0.f),
+		mTargetFreq(100.f),
+		mTargetPanGainR(0.5f),
+		mInputSamplingRate(sample_rate),
+		mSubSamples(2),
+		mFilterBandWidth(50.f),
+		mBuf0(0.0f),
+		mBuf1(0.0f),
+		mBuf2(0.0f),
+		mY0(0.0f),
+		mY1(0.0f),
+		mCurrentGain(0.f),
+		mCurrentFreq(100.f),
+		mCurrentPanGainR(0.5f)
+	{
+		mSamplePeriod = (F32)mSubSamples / (F32)mInputSamplingRate;
+		mB2 = expf(-F_TWO_PI * mFilterBandWidth * mSamplePeriod);
+	}
+
+	const U32 getInputSamplingRate() { return mInputSamplingRate; }
+	
+	// newbuffer = the buffer passed from the previous DSP unit.
+	// numsamples = length in samples-per-channel at this mix time.
+	// NOTE: generates L/R interleaved stereo
+	MIXBUFFERFORMAT_T* windGenerate(MIXBUFFERFORMAT_T *newbuffer, int numsamples)
+	{
+		MIXBUFFERFORMAT_T *cursamplep = newbuffer;
+		
+		// Filter coefficients
+		F32 a0 = 0.0f, b1 = 0.0f;
+		
+		// No need to clip at normal volumes
+		bool clip = mCurrentGain > 2.0f;
+		
+		bool interp_freq = false; 
+		
+		//if the frequency isn't changing much, we don't need to interpolate in the inner loop
+		if (llabs(mTargetFreq - mCurrentFreq) < (mCurrentFreq * 0.112))
+		{
+			// calculate resonant filter coefficients
+			mCurrentFreq = mTargetFreq;
+			b1 = (-4.0f * mB2) / (1.0f + mB2) * cosf(F_TWO_PI * (mCurrentFreq * mSamplePeriod));
+			a0 = (1.0f - mB2) * sqrtf(1.0f - (b1 * b1) / (4.0f * mB2));
+		}
+		else
+		{
+			interp_freq = true;
+		}
+		
+		while (numsamples)
+		{
+			F32 next_sample;
+			
+			// Start with white noise
+			// This expression is fragile, rearrange it and it will break!
+			next_sample = (F32)rand() * (1.0f / (F32)(RAND_MAX / (U16_MAX / 8))) + (F32)(S16_MIN / 8);
+			
+			// Apply a pinking filter
+			// Magic numbers taken from PKE method at http://www.firstpr.com.au/dsp/pink-noise/
+			mBuf0 = mBuf0 * 0.99765f + next_sample * 0.0990460f;
+			mBuf1 = mBuf1 * 0.96300f + next_sample * 0.2965164f;
+			mBuf2 = mBuf2 * 0.57000f + next_sample * 1.0526913f;
+			
+			next_sample = mBuf0 + mBuf1 + mBuf2 + next_sample * 0.1848f;
+			
+			if (interp_freq)
+			{
+				// calculate and interpolate resonant filter coefficients
+				mCurrentFreq = (0.999f * mCurrentFreq) + (0.001f * mTargetFreq);
+				b1 = (-4.0f * mB2) / (1.0f + mB2) * cosf(F_TWO_PI * (mCurrentFreq * mSamplePeriod));
+				a0 = (1.0f - mB2) * sqrtf(1.0f - (b1 * b1) / (4.0f * mB2));
+			}
+			
+			// Apply a resonant low-pass filter on the pink noise
+	        next_sample = a0 * next_sample - b1 * mY0 - mB2 * mY1;
+			mY1 = mY0;
+			mY0 = next_sample;
+			
+			mCurrentGain = (0.999f * mCurrentGain) + (0.001f * mTargetGain);
+			mCurrentPanGainR = (0.999f * mCurrentPanGainR) + (0.001f * mTargetPanGainR);
+			
+			// For a 3dB pan law use:
+			// next_sample *= mCurrentGain * ((mCurrentPanGainR*(mCurrentPanGainR-1)*1.652+1.413);
+		    next_sample *= mCurrentGain;
+			
+			// delta is used to interpolate between synthesized samples
+			F32 delta = (next_sample - mLastSample) / (F32)mSubSamples;
+			
+			// Fill the audio buffer, clipping if necessary
+			for (U8 i=mSubSamples; i && numsamples; --i, --numsamples) 
+			{
+				mLastSample = mLastSample + delta;
+				S32	sample_right = (S32)(mLastSample * mCurrentPanGainR);
+				S32	sample_left = (S32)mLastSample - sample_right;
+				
+				if (!clip)
+				{
+					*cursamplep = (MIXBUFFERFORMAT_T)sample_left;
+					++cursamplep;
+					*cursamplep = (MIXBUFFERFORMAT_T)sample_right;
+					++cursamplep;
+				}
+				else
+				{
+					*cursamplep = (MIXBUFFERFORMAT_T)llclamp(sample_left, (S32)S16_MIN, (S32)S16_MAX);
+					++cursamplep;
+					*cursamplep = (MIXBUFFERFORMAT_T)llclamp(sample_right, (S32)S16_MIN, (S32)S16_MAX);
+					++cursamplep;
+				}
+			}
+		}
+		
+		return newbuffer;
+	}
+	
+public:
+	F32 mTargetGain;
+	F32 mTargetFreq;
+	F32 mTargetPanGainR;
+	
+private:
+	U32 mInputSamplingRate;
+	U8  mSubSamples;
+	F32 mSamplePeriod;
+	F32 mFilterBandWidth;
+	F32 mB2;
+	
+	F32 mBuf0;
+	F32 mBuf1;
+	F32 mBuf2;
+	F32 mY0;
+	F32 mY1;
+	
+	F32 mCurrentGain;
+	F32 mCurrentFreq;
+	F32 mCurrentPanGainR;
+	F32 mLastSample;
+};
+
+#endif