From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Qais Yousef <qais.yousef@imgtec.com>, Takashi Iwai <tiwai@suse.de>
Cc: Vinod Koul <vinod.koul@intel.com>,
alsa-devel@alsa-project.org, Mark Brown <broonie@kernel.org>
Subject: Re: alsa-lib support for compress offload
Date: Fri, 16 Jan 2015 10:50:07 -0600 [thread overview]
Message-ID: <54B9413F.805@linux.intel.com> (raw)
In-Reply-To: <54B8F485.7090603@imgtec.com>
>> It's a normal IEC958 passthrough, nothing to do with the compress
>> offload. And, no, we have no support for compress API in alsa-lib
>> yet. Just because no one submitted the patches.
>
> Thanks. I haven't used alsa-lib before but I might be able to send the
> patches if I get guidance of what needs doing. Is the expected API
> similar/same to what provided by tinycompress[1]?
>
> [1]
> http://git.alsa-project.org/?p=tinycompress.git;a=blob;f=include/tinycompress/tinycompress.h;h=03c396fccea5f2a176d24fd580ee6a447da657ec;hb=HEAD
Since there is no allowed processing/reformatting/reshuffling of
compressed data, all the plugin system needs to be bypassed and you'd be
looking at an alsa-lib API that interfaces directly with the ioctls,
essentially replicating what tinycompress does. I agree it's not great
to have independent packages, the decision to maintain tinycompress
separately was driven by licensing concerns, not technical ones.
-Pierre
next prev parent reply other threads:[~2015-01-16 16:50 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-16 9:52 alsa-lib support for compress offload Qais Yousef
2015-01-16 10:34 ` Takashi Iwai
2015-01-16 11:22 ` Qais Yousef
2015-01-16 16:50 ` Pierre-Louis Bossart [this message]
2015-01-16 18:46 ` Mark Brown
2015-01-19 17:23 ` Qais Yousef
2015-01-19 22:07 ` Pierre-Louis Bossart
2015-01-20 7:21 ` Arun Raghavan
2015-01-20 9:53 ` Qais Yousef
2015-01-21 7:10 ` Vinod Koul
2015-01-21 9:22 ` Qais Yousef
2015-01-21 11:59 ` Takashi Iwai
2015-01-21 14:16 ` Qais Yousef
2015-01-22 21:56 ` Vinod Koul
2015-01-22 22:03 ` Pierre-Louis Bossart
2015-01-23 6:41 ` Takashi Iwai
2015-01-21 15:01 ` Pierre-Louis Bossart
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