Re: Problem using alsa and ladspa
On Mon, Jun 08, 2009 at 02:31:33PM +0530, Parantapa Bhattacharya wrote:
> Hi
>
> Seems the solution was simple all you had to do was define another pcm
> of type plug which uses dmix as its slave and use this as the slave in
> the ladspa pcm.
Glad to hear you solved this.
> Wonder why i didn't get any replies
First of all, audio troubleshooting is not easy.
Second, there are no guaranteed responses here, even
for easy problems. None of us are getting paid to help you!
For audio-specific issues, I recommend that you try posting
on the Linux Audio Users list.
Spend some time answering others' questions, and maybe
others will be more responsive to you.... or maybe not.
Good luck!
> --
> Parantapa Bhattacharya
>
> On Sun, May 31, 2009 at 10:56 AM, Parantapa
> Bhattacharya<joiguru@gmail.com> wrote:
> > Hi
> >
> > My laptop has a Sis Azalia sound chipset. And default the sound volume
> > is pretty low. As a workarround i use pulseaudio on top of alsa with
> > ladspa amp.so plugin to increase volume.
> >
> > I found out that one can use ladspa plugins directly in alsa and i am
> > trying to do so. But for some reason things are not working when i try
> > to use ladspa in alsa.
> >
> > [parantapa@labda: /usr/share/sounds/purple]$ aplay -D azalia_plug login.wav
> > Playing WAVE 'login.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Stereo
> > ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
> > aplay: set_params:939: Broken configuration for this PCM: no
> > configurations available
> >
> > [parantapa@labda: /usr/share/sounds/purple]$ alsaplayer -d azalia_plug
> > login.wav
> > ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
> > error on snd_pcm_hw_par/ams_any
> > Unavailable hw params:
> > ACCESS: ALL
> > FORMAT: ALL
> > SUBFORMAT: ALL
> > SAMPLE_BITS: ALL
> > FRAME_BITS: ALL
> > CHANNELS: [0 10000]
> > RATE: [4000 4294967295]
> > PERIOD_TIME: ALL
> > PERIOD_SIZE: ALL
> > PERIOD_BYTES: ALL
> > PERIODS: ALL
> > BUFFER_TIME: ALL
> > BUFFER_SIZE: ALL
> > BUFFER_BYTES: ALL
> > TICK_TIME: ALL
> > ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
> > error on snd_pcm_hw_par/ams_any
> > Unavailable hw params:
> > ACCESS: ALL
> > FORMAT: ALL
> > SUBFORMAT: ALL
> > SAMPLE_BITS: ALL
> > FRAME_BITS: ALL
> > CHANNELS: [0 10000]
> > RATE: [4000 4294967295]
> > PERIOD_TIME: ALL
> > PERIOD_SIZE: ALL
> > PERIOD_BYTES: ALL
> > PERIODS: ALL
> > BUFFER_TIME: ALL
> > BUFFER_SIZE: ALL
> > BUFFER_BYTES: ALL
> > TICK_TIME: ALL
> > failed to configure output device...trying OSS
> > ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
> > error on snd_pcm_hw_par/ams_any
> > Unavailable hw params:
> > ACCESS: ALL
> > FORMAT: ALL
> > SUBFORMAT: ALL
> > SAMPLE_BITS: ALL
> > FRAME_BITS: ALL
> > CHANNELS: [0 10000]
> > RATE: [4000 4294967295]
> > PERIOD_TIME: ALL
> > PERIOD_SIZE: ALL
> > PERIOD_BYTES: ALL
> > PERIODS: ALL
> > BUFFER_TIME: ALL
> > BUFFER_SIZE: ALL
> > BUFFER_BYTES: ALL
> > TICK_TIME: ALL
> > ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
> > error on snd_pcm_hw_par/ams_any
> > Unavailable hw params:
> > ACCESS: ALL
> > FORMAT: ALL
> > SUBFORMAT: ALL
> > SAMPLE_BITS: ALL
> > FRAME_BITS: ALL
> > CHANNELS: [0 10000]
> > RATE: [4000 4294967295]
> > PERIOD_TIME: ALL
> > PERIOD_SIZE: ALL
> > PERIOD_BYTES: ALL
> > PERIODS: ALL
> > BUFFER_TIME: ALL
> > BUFFER_SIZE: ALL
> > BUFFER_BYTES: ALL
> > TICK_TIME: ALL
> > failed to configure output device...trying OSS
> >
> >
> > However if I use plug:azalia_dmix instead of azalia_plug sound works.
> > So i feel its some problem with using ladspa. I have tried other
> > ladspa plugins too but they also have the same error.
> >
> > Here are my specs: -
> >
> > [parantapa@labda: ~]$ cat /etc/debian_version
> > squeeze/sid
> >
> > [parantapa@labda: ~]$ uname -r
> > 2.6.26-1-amd64
> >
> > alsa-base Version: 1.0.19.dfsg-3
> > alsa-modules-2.6.26-1-amd64 Version: 1.0.17.dfsg-4+2.6.26-12
> >
> > [parantapa@labda: ~]$ lspci
> > 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 671MX
> > 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port
> > (virtual PCI-to-PCI bridge)
> > 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS968 [MuTIOL
> > Media IO] (rev 01)
> > 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01)
> > 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1
> > Controller (rev 0f)
> > 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1
> > Controller (rev 0f)
> > 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
> > 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] 191
> > Gigabit Ethernet Adapter (rev 02)
> > 00:05.0 IDE interface: Silicon Integrated Systems [SiS] SATA
> > Controller / IDE mode (rev 03)
> > 00:06.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
> > 00:07.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
> > 00:0d.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b4)
> > 00:0d.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 09)
> > 00:0d.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro
> > Host Adapter (rev 18)
> > 00:0d.3 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 09)
> > 00:0d.4 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host
> > Adapter (rev ff)
> > 00:0f.0 Audio device: Silicon Integrated Systems [SiS] Azalia Audio Controller
> > 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS]
> > 771/671 PCIE VGA Display Adapter (rev 10)
> > 02:00.0 Ethernet controller: Atheros Communications Inc. AR242x
> > 802.11abg Wireless PCI Express Adapter (rev 01)
> >
> > [parantapa@labda: ~]$ cat ~/.asoundrc
> > pcm.azalia_hw {
> > type hw
> > card 0
> > device 0
> > }
> >
> > pcm.azalia_dmix {
> > type dmix
> > ipc_key 1024
> > slave.pcm azalia_hw
> > }
> >
> > pcm.azalia_amp {
> > type ladspa
> > slave.pcm azalia_dmix
> > path "/usr/lib/ladspa"
> > playback_plugins.0 {
> > id 1049
> > label amp_stereo
> > filename "/usr/lib/ladspa/amp.so"
> > input.controls [ 1.0 ]
> > }
> > }
> >
> > pcm.azalia_plug {
> > type plug
> > slave.pcm azalia_amp
> > }
> >
> > ctl.azalia_hw {
> > type hw
> > card 0
> > device 0
> > }
> >
> > Thanks in advance
> >
> > --
> > Parantapa Bhattcharya
> >
>
>
>
> --
> Parantapa Bhattcharya
>
>
> --
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--
Joel Roth
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