[alsa-devel] MIDI support for hda-intel
Hi, quick question for the list. Has MIDI support been implemented for the hda-intel codec, specifically the sigmatel codec. I tried playing a MIDI file the other day, and could see the levels bouncing around, but no sound whatsoever. Basically, does the driver not support it, or am I doing something wrong?
Thanks, Nick
At Sat, 23 Oct 2010 13:10:35 -0400, Nick Lloyd wrote:
Hi, quick question for the list. Has MIDI support been implemented for the hda-intel codec, specifically the sigmatel codec. I tried playing a MIDI file the other day, and could see the levels bouncing around, but no sound whatsoever. Basically, does the driver not support it, or am I doing something wrong?
The HD-audio doesn't support the MIDI playback in hardware. Everything is software rendering.
Takashi
On Sun, Oct 24, 2010 at 6:34 AM, Takashi Iwai tiwai@suse.de wrote:
At Sat, 23 Oct 2010 13:10:35 -0400, Nick Lloyd wrote:
Hi, quick question for the list. Has MIDI support been implemented for the hda-intel codec, specifically the sigmatel codec. I tried playing a MIDI file the other day, and could see the levels bouncing around, but no sound whatsoever. Basically, does the driver not support it, or am I doing something wrong?
The HD-audio doesn't support the MIDI playback in hardware. Everything is software rendering.
Takashi
Thanks Takashi. So to clarify, the HDA driver supports MIDI, but not through the hardware? So if I play a MIDI file, it should in fact work?
Thanks, Nick
You'll need to use a softsynth, e.g., fluidsynth, timidity, and be aware that, depending on the desktop distro that you use, you may encounter races with other apps attempting to access the device.
At Sun, 24 Oct 2010 19:37:51 -0400, Nick Lloyd wrote:
On Sun, Oct 24, 2010 at 6:34 AM, Takashi Iwai tiwai@suse.de wrote:
At Sat, 23 Oct 2010 13:10:35 -0400, Nick Lloyd wrote:
Hi, quick question for the list. Has MIDI support been implemented for the hda-intel codec, specifically the sigmatel codec. I tried playing a MIDI file the other day, and could see the levels bouncing around, but no sound whatsoever. Basically, does the driver not support it, or am I doing something wrong?
The HD-audio doesn't support the MIDI playback in hardware. Everything is software rendering.
Takashi
Thanks Takashi. So to clarify, the HDA driver supports MIDI, but not through the hardware?
No and no. It's no job of a driver but a user-space application who renders the MIDI data to PCM.
So if I play a MIDI file, it should in fact work?
Use an application (or a sound subsystem) supporting software MIDI rendering. fluidsynth, timidity, whatever.
Takashi
Thanks to both of you, that's exactly what I was looking for.
Nick
On Mon, Oct 25, 2010 at 5:24 AM, Takashi Iwai tiwai@suse.de wrote:
At Sun, 24 Oct 2010 19:37:51 -0400, Nick Lloyd wrote:
On Sun, Oct 24, 2010 at 6:34 AM, Takashi Iwai tiwai@suse.de wrote:
At Sat, 23 Oct 2010 13:10:35 -0400, Nick Lloyd wrote:
Hi, quick question for the list. Has MIDI support been implemented for the hda-intel codec, specifically the sigmatel codec. I tried playing a MIDI file the other day, and could see the levels bouncing around, but no sound whatsoever. Basically, does the driver not support it, or am I doing something wrong?
The HD-audio doesn't support the MIDI playback in hardware. Everything is software rendering.
Takashi
Thanks Takashi. So to clarify, the HDA driver supports MIDI, but not through the hardware?
No and no. It's no job of a driver but a user-space application who renders the MIDI data to PCM.
So if I play a MIDI file, it should in fact work?
Use an application (or a sound subsystem) supporting software MIDI rendering. fluidsynth, timidity, whatever.
Takashi
participants (3)
-
Daniel Chen -
Nick Lloyd -
Takashi Iwai