I've been running audio/hydrogen on an AMD64 machine with uaudio output; the stock install can't play audio and instead spews the following messages to stderr:
[EMAIL PROTECTED] hydrogen DefaultSong.h2song Hydrogen 0.9.3 [Dec 24 2006] [http://www.hydrogen-music.org] Copyright 2002-2005 Alessandro Cominu Compiled modules: (FLAC) (OSS) Hydrogen comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions. See the file COPYING for details Using data path: /usr/local/share/hydrogen/data [WARNING] SongReader [readSong] Trying to load a song created with a different version of hydrogen. [WARNING] SongReader [readSong] Song [/usr/local/share/hydrogen/data/demo_songs/TR808kit-demo.h2song] saved with version 0.9.2-cvs [LadspaFX::getPluginList] reading directory: /usr/local/lib/hydrogen/plugins [LadspaFX::getLadspaFXGroup] [LadspaFX::getPluginList] reading directory: /usr/local/lib/hydrogen/plugins [ERROR] OssDriver ERROR_IOCTL: unable to set BlockSize [ERROR] Hydrogen [audioEngine_startAudioDrivers] Error starting audio driver [audioDriver::connect()] [ERROR] Hydrogen [audioEngine_startAudioDrivers] Using the NULL output audio driver [ERROR] Hydrogen [audioEngine_startAudioDrivers] m_pMainBuffer_L == NULL [ERROR] Hydrogen [audioEngine_startAudioDrivers] m_pMainBuffer_R == NULL [ERROR] Hydrogen [audioEngine_setupLadspaFX] nBufferSize=0 [ERROR] NullDriver [setBpm] not implemented yet Tracking things down a bit I added the following diff to patches/patch-src_lib_drivers_OssDriver_cpp: $OpenBSD: patch-src_lib_drivers_OssDriver_cpp,v 1.1.1.1 2006/09/25 18:56:00 grange Exp $ --- src/lib/drivers/OssDriver.cpp.orig Mon Oct 17 23:31:42 2005 +++ src/lib/drivers/OssDriver.cpp Mon Dec 25 00:07:15 2006 @@ -178,11 +180,11 @@ int OssDriver::connect() { infoLog( "Blocksize audio = " + toString( bs ) ); - if (bs != ( 1 << bufferBits) ){ + /*if (bs != ( 1 << bufferBits) ){ errorLog("ERROR_IOCTL: unable to set BlockSize"); close(fd); return 1; - } + }*/ int format = AFMT_S16_LE; if (ioctl(fd, SNDCTL_DSP_SETFMT, &format) == -1) { And now Hydrogen works fine. I'm not 100% sure, but reading the code in the OSS driver, it looks to me like Hydrogen can't actually set the block size; instead it just tries to assert that the block size is what it would like to be, and if it isn't it errors. I am unclear as to whether this is OpenBSD / uaudio / AMD64 specific or not. I've sent this patch a couple of times to the listed maintainer, but haven't heard anything back, hence this message to [EMAIL PROTECTED] Laurie -- http://tratt.net/laurie/ -- Personal http://convergepl.org/ -- The Converge programming language http://sosym.dcs.kcl.ac.uk/ -- Software and Systems Modelling Team
