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From: Qais Yousef <qais.yousef@imgtec.com>
To: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.de>, Mark Brown <broonie@kernel.org>
Subject: alsa-lib support for compress offload
Date: Fri, 16 Jan 2015 09:52:58 +0000	[thread overview]
Message-ID: <54B8DF7A.6000700@imgtec.com> (raw)

Hi,

As far as I understand I need to use something similar to tinycompress 
to use alsa devices that supports compress offload. When I asked on 
gstreamer list [1] about alsasink support for compress offload they said 
yes. But I can see that gstalsasink.c [2] only uses the standard 
alsa-lib api which AFAICT doesn't support compress offload.

Did I misread the code and alsa-lib actually works with compress 
offload? Gstreamer refers to the feature "passthrough" and associate it 
with SPDIF[3], are they taking advantage of some other alsa feature that 
looks like compress offload?

Thanks,
Qais

[1] 
http://gstreamer-devel.966125.n4.nabble.com/ALSA-Compress-Offload-support-td4670153.html
[2] 
http://cgit.freedesktop.org/gstreamer/gst-plugins-base/tree/ext/alsa/gstalsasink.c#n836
[3] 
http://cgit.freedesktop.org/gstreamer/gst-plugins-base/tree/ext/alsa/gstalsa.c#n437

             reply	other threads:[~2015-01-16  9:52 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-16  9:52 Qais Yousef [this message]
2015-01-16 10:34 ` alsa-lib support for compress offload Takashi Iwai
2015-01-16 11:22   ` Qais Yousef
2015-01-16 16:50     ` Pierre-Louis Bossart
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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