370 lines
13 KiB
Plaintext
370 lines
13 KiB
Plaintext
Note these changes relate to Hannu's code and don't include the changes
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made outside of this for modularising the sound
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Changelog for version 3.8o
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--------------------------
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Since 3.8h
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- Included support for OPL3-SA1 and SoftOSS
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Since 3.8
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- Fixed SNDCTL_DSP_GETOSPACE
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- Compatibility fixes for Linux 2.1.47
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Since 3.8-beta21
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- Fixed all known bugs (I think).
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Since 3.8-beta8
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- Lot of fixes to audio playback code in dmabuf.c
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Since 3.8-beta6
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- Fixed the famous Quake delay bug.
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Since 3.8-beta5
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- Fixed many bugs in audio playback.
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Since 3.8-beta4
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- Just minor changes.
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Since 3.8-beta1
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- Major rewrite of audio playback handling.
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- Added AWE32 support by Takashi Iwai (in ./lowlevel/).
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Since 3.7-beta#
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- Passing of ioctl() parameters between soundcard.c and other modules has been
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changed so that arg always points to kernel space.
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- Some bugfixes.
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Since 3.7-beta5
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- Disabled MIDI input with GUS PnP (Interwave). There seems to be constant
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stream of received 0x00 bytes when the MIDI receiver is enabled.
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Since 3.5
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- Changes almost everywhere.
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- Support for OPTi 82C924-based sound cards.
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Since 3.5.4-beta8
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- Fixed a bug in handling of non-fragment sized writes in 16 bit/stereo mode
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with GUS.
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- Limited minimum fragment size with some audio devices (GUS=512 and
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SB=32). These devices require more time to "recover" from processing
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of each fragment.
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Since 3.5.4-beta6/7
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- There seems to be problems in the OPTi 82C930 so cards based on this
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chip don't necessarily work yet. There are problems in detecting the
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MIDI interface. Also mixer volumes may be seriously wrong on some systems.
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You can safely use this driver version with C930 if it looks to work.
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However please don't complain if you have problems with it. C930 support
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should be fixed in future releases.
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- Got initialization of GUS PnP to work. With this version GUS PnP should
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work in GUS compatible mode after initialization using isapnptools.
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- Fixed a bug in handling of full duplex cards in write only mode. This has
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been causing "audio device opening" errors with RealAudio player.
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Since 3.5.4.beta5
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- Changes to OPTi 82C930 driver.
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- Major changes to the Soundscape driver. The driver requires now just one
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DMA channel. The extra audio/dsp device (the "Not functional" one) used
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for code download in the earlier versions has been eliminated. There is now
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just one /dev/dsp# device which is used both for code download and audio.
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Since 3.5.4.beta4
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- Minor changes.
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Since 3.5.4-beta2
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- Fixed silent playback with ESS 688/1688.
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- Got SB16 to work without the 16 bit DMA channel (only the 8 bit one
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is required for 8 and 16 bit modes).
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- Added the "lowlevel" subdirectory for additional low level drivers that
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are not part of USS core. See lowlevel/README for more info.
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- Included support for ACI mixer (by Markus Kuhn). ACI is a mixer used in
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miroPCM sound cards. See lowlevel/aci.readme for more info.
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- Support for Aztech Washington chipset (AZT2316 ASIC).
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Since 3.5.4-beta1
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- Reduced clicking with AD1848.
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- Support for OPTi 82C930. Only half duplex at this time. 16 bit playback
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is sometimes just white noise (occurs randomly).
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Since 3.5.2
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- Major changes to the SB/Jazz16/ESS driver (most parts rewritten).
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The most noticeable new feature is support for multiple SB cards at the same
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time.
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- Renamed sb16_midi.c to uart401.c. Also modified it to work also with
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other MPU401 UART compatible cards than SB16/ESS/Jazz.
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- Some changes which reduce clicking in audio playback.
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- Copying policy is now GPL.
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Since 3.5.1
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- TB Maui initialization support
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Since 3.5
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- Improved handling of playback underrun situations.
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Since 3.5-beta10
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- Bug fixing
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Since 3.5-beta9
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- Fixed for compatibility with Linux 1.3.70 and later.
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- Changed boot time passing of 16 bit DMA channel number to SB driver.
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Since 3.5-beta8
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- Minor changes
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Since 3.5-beta7
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- enhancements to configure program (by Jeff Tranter):
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- prompts are in same format as 1.3.x Linux kernel config program
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- on-line help for each question
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- fixed some compile warnings detected by gcc/g++ -Wall
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- minor grammatical changes to prompts
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Since 3.5-beta6
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- Fixed bugs in mmap() support.
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- Minor changes to Maui driver.
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Since 3.5-beta5
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- Fixed crash after recording with ESS688. It's generally a good
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idea to stop inbound DMA transfers before freeing the memory
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buffer.
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- Fixed handling of AD1845 codec (for example Shuttle Sound System).
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- Few other fixes.
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Since 3.5-beta4
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- Fixed bug in handling of uninitialized instruments with GUS.
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Since 3.5-beta3
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- Few changes which decrease popping at end/beginning of audio playback.
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Since 3.5-beta2
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- Removed MAD16+CS4231 hack made in previous version since it didn't
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help.
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- Fixed the above bug in proper way and in proper place. Many thanks
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to James Hightower.
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Since 3.5-beta1
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- Bug fixes.
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- Full duplex audio with MAD16+CS4231 may work now. The driver configures
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SB DMA of MAD16 so that it doesn't conflict with codec's DMA channels.
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The side effect is that all 8 bit DMA channels (0,1,3) are populated in
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duplex mode.
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Since 3.5-alpha9
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- Bug fixes (mostly in Jazz16 and ESS1688/688 supports).
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- Temporarily disabled recording with ESS1688/688 since it causes crash.
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- Changed audio buffer partitioning algorithm so that it selects
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smaller fragment size than earlier. This improves real time capabilities
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of the driver and makes recording to disk to work better. Unfortunately
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this change breaks some programs which assume that fragments cannot be
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shorter than 4096 bytes.
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Since 3.5-alpha8
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- Bug fixes
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Since 3.5-alpha7
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- Linux kernel compatible configuration (_EXPERIMENTAL_). Enable
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using command "cd /linux/drivers/sound;make script" and then
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just run kernel's make config normally.
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- Minor fixes to the SB support. Hopefully the driver works with
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all SB models now.
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- Added support for ESS ES1688 "AudioDrive" based cards.
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Since 3.5-alpha6
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- SB Pro and SB16 supports are no longer separately selectable options.
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Enabling SB enables them too.
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- Changed all #ifndef EXCLUDE_xx stuff to #ifdef CONFIG_xx. Modified
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configure to handle this.
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- Removed initialization messages from the
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modularized version. They can be enabled by using init_trace=1 in
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the insmod command line (insmod sound init_trace=1).
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- More AIX stuff.
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- Added support for synchronizing dsp/audio devices with /dev/sequencer.
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- mmap() support for dsp/audio devices.
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Since 3.5-alpha5
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- AIX port.
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- Changed some xxx_PATCH macros in soundcard.h to work with
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big endian machines.
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Since 3.5-alpha4
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- Removed the 'setfx' stuff from the version distributed with kernel
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sources. Running 'setfx' is required again.
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Since 3.5-alpha3
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- Moved stuff from the 'setfx' program to the AudioTrix Pro driver.
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Since 3.5-alpha2
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- Modifications to makefile and configure.c. Unnecessary sources
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are no longer compiled. Newly created local.h is also copied to
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/etc/soundconf. "make oldconfig" reads /etc/soundconf and produces
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new local.h which is compatible with current version of the driver.
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- Some fixes to the SB16 support.
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- Fixed random protection fault in gus_wave.c
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Since 3.5-alpha1
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- Modified to work with Linux-1.3.33 and later
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- Some minor changes
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Since 3.0.2
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- Support for CS4232 based PnP cards (AcerMagic S23 etc).
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- Full duplex support for some CS4231, CS4232 and AD1845 based cards
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(GUS MAX, AudioTrix Pro, AcerMagic S23 and many MAD16/Mozart cards
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having a codec mentioned above).
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- Almost fully rewritten loadable modules support.
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- Fixed some bugs.
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- Huge amount of testing (more testing is still required).
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- mmap() support (works with some cards). Requires much more testing.
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- Sample/patch/program loading for TB Maui/Tropez. No initialization
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since TB doesn't allow me to release that code.
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- Using CS4231 compatible codecs as timer for /dev/music.
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Since 3.0.1
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- Added allocation of I/O ports, DMA channels and interrupts
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to the initialization code. This may break modules support since
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the driver may not free some resources on unload. Should be fixed soon.
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Since 3.0
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- Some important bug fixes.
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- select() for /dev/dsp and /dev/audio (Linux only).
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(To use select() with read, you have to call read() to start
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the recording. Calling write() kills recording immediately so
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use select() carefully when you are writing a half duplex app.
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Full duplex mode is not implemented yet.) Select works also with
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/dev/sequencer and /dev/music. Maybe with /dev/midi## too.
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Since 3.0-beta2
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- Minor fixes.
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- Added Readme.cards
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Since 3.0-beta1
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- Minor fixes to the modules support.
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- Eliminated call to sb_free_irq() in ad1848.c
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- Rewritten MAD16&Mozart support (not tested with MAD16 Pro).
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- Fix to DMA initialization of PSS cards.
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- Some fixes to ad1848/cs42xx mixer support (GUS MAX, MSS, etc.)
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- Fixed some bugs in the PSS driver which caused I/O errors with
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the MSS mode (/dev/dsp).
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Since 3.0-950506
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- Recording with GUS MAX fixed. It works when the driver is configured
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to use two DMA channels with GUS MAX (16 bit ones recommended).
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Since 3.0-94xxxx
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- Too many changes
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Since 3.0-940818
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- Fixes for Linux 1.1.4x.
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- Disables Disney Sound System with SG NX Pro 16 (less noise).
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Since 2.90-2
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- Fixes to soundcard.h
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- Non blocking mode to /dev/sequencer
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- Experimental detection code for Ensoniq Soundscape.
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Since 2.90
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- Minor and major bug fixes
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Since pre-3.0-940712
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- GUS MAX support
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- Partially working MSS/WSS support (could work with some cards).
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- Hardware u-Law and A-Law support with AD1848/CS4248 and CS4231 codecs
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(GUS MAX, GUS16, WSS etc). Hardware ADPCM is possible with GUS16 and
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GUS MAX, but it doesn't work yet.
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Since pre-3.0-940426
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- AD1848/CS4248/CS4231 codec support (MSS, GUS MAX, Aztec, Orchid etc).
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This codec chip is used in various sound cards. This version is developed
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for the 16 bit daughtercard of GUS. It should work with other cards also
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if the following requirements are met:
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- The I/O, IRQ and DMA settings are jumper selectable or
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the card is initialized by booting DOS before booting Linux (etc.).
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- You add the IO, IRQ and DMA settings manually to the local.h.
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(Just define GUS16_BASE, GUS16_IRQ and GUS16_DMA). Note that
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the base address bust be the base address of the codec chip not the
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card itself. For the GUS16 these are the same but most MSS compatible
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cards have the codec located at card_base+4.
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- Some minor changes
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Since 2.5 (******* MAJOR REWRITE ***********)
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This version is based on v2.3. I have tried to maintain two versions
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together so that this one should have the same features than v2.5.
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Something may still be missing. If you notice such things, please let me
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know.
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The Readme.v30 contains more details.
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- /dev/midi## devices.
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- /dev/sequencer2
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Since 2.5-beta2
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- Some fine tuning to the GUS v3.7 mixer code.
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- Fixed speed limits for the plain SB (1.0 to 2.0).
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Since 2.5-beta
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- Fixed OPL-3 detection with SB. Caused problems with PAS16.
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- GUS v3.7 mixer support.
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Since 2.4
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- Mixer support for Sound Galaxy NX Pro (define __SGNXPRO__ on your local.h).
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- Fixed truncated sound on /dev/dsp when the device is closed.
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- Linear volume mode for GUS
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- Pitch bends larger than +/- 2 octaves.
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- MIDI recording for SB and SB Pro. (Untested).
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- Some other fixes.
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- SB16 MIDI and DSP drivers only initialized if SB16 actually installed.
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- Implemented better detection for OPL-3. This should be useful if you
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have an old SB Pro (the non-OPL-3 one) or a SB 2.0 clone which has a OPL-3.
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- SVR4.2 support by Ian Hartas. Initial ALPHA TEST version (untested).
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Since 2.3b
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- Fixed bug which made it impossible to make long recordings to disk.
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Recording was not restarted after a buffer overflow situation.
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- Limited mixer support for GUS.
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- Numerous improvements to the GUS driver by Andrew Robinson. Including
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some click removal etc.
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Since 2.3
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- Fixed some minor bugs in the SB16 driver.
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Since 2.2b
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- Full SB16 DSP support. 8/16 bit, mono/stereo
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- The SCO and FreeBSD versions should be in sync now. There are some
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problems with SB16 and GUS in the FreeBSD versions.
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The DMA buffer allocation of the SCO version has been polished but
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there could still be some problems. At least it hogs memory.
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The DMA channel
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configuration method used in the SCO/System is a hack.
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- Support for the MPU emulation of the SB16.
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- Some big arrays are now allocated boot time. This makes the BSS segment
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smaller which makes it possible to use the full driver with
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NetBSD. These arrays are not allocated if no suitable sound card is available.
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- Fixed a bug in the compute_and_set_volume in gus_wave.c
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- Fixed the too fast mono playback problem of SB Pro and PAS16.
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Since 2.2
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- Stereo recording for SB Pro. Somehow it was missing and nobody
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had noticed it earlier.
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- Minor polishing.
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- Interpreting of boot time arguments (sound=) for Linux.
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- Breakup of sb_dsp.c. Parts of the code has been moved to
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sb_mixer.c and sb_midi.c
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Since 2.1
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- Preliminary support for SB16.
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- The SB16 mixer is supported in its native mode.
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- Digitized voice capability up to 44.1 kHz/8 bit/mono
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(16 bit and stereo support coming in the next release).
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- Fixed some bugs in the digitized voice driver for PAS16.
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- Proper initialization of the SB emulation of latest PAS16 models.
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- Significantly improved /dev/dsp and /dev/audio support.
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- Now supports half duplex mode. It's now possible to record and
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playback without closing and reopening the device.
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- It's possible to use smaller buffers than earlier. There is a new
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ioctl(fd, SNDCTL_DSP_SUBDIVIDE, &n) where n should be 1, 2 or 4.
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This call instructs the driver to use smaller buffers. The default
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buffer size (0.5 to 1.0 seconds) is divided by n. Should be called
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immediately after opening the device.
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Since 2.0
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Just cosmetic changes.
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