From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: 'Takashi Iwai' <tiwai@suse.de>,
dp@opensource.wolfsonmicro.com,
'Vinod Koul' <vinod.koul@linux.intel.com>,
alsa-devel@alsa-project.org, lrg@ti.com
Subject: Re: [PATCH 5/6] compress: add the core file
Date: Wed, 30 Nov 2011 10:30:29 +0000 [thread overview]
Message-ID: <20111130103028.GF2791@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <003001ccaedb$f4e30010$dea90030$@bossart@linux.intel.com>
On Tue, Nov 29, 2011 at 03:15:01PM -0600, Pierre-Louis Bossart wrote:
> > But is this restriction guaranteed to be applicable to all possible
> > hardwares in future? What happens if you'll get a hardware that
> > doesn't support the byte-unit push for the playback?
> > That said, I see no obvious reason to give a restriction coupled with
> > the stream direction.
> Power consumption will be more optimized if we push bytes without looking
> for block boundaries on the host. But if your hardware requires parsing on
> the host, there's no impact on the API. You'd just write block-by-block and
> specify the block length instead of fixed-size value.
We've got a block based driver in development for this API - it's not
had a problem interoperating thus far. So long as we can report how
much data we've actually consumed I'd not anticipate any problems.
next prev parent reply other threads:[~2011-11-30 10:30 UTC|newest]
Thread overview: 133+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-02 6:06 [RFC 0/5] compress: add compress data API to ALSA kernel Vinod Koul
2011-09-02 6:06 ` [RFC 1/5] compress API documentation Vinod Koul
2011-09-02 6:06 ` [RFC 2/5] compress: add compress parameter definations Vinod Koul
2011-09-02 6:49 ` Paul Menzel
2011-09-02 19:54 ` Pierre-Louis Bossart
2011-09-03 6:28 ` Mark Brown
2011-09-02 14:19 ` Mark Brown
2011-09-02 19:26 ` Pierre-Louis Bossart
2011-09-03 0:05 ` Mark Brown
2011-09-02 6:06 ` [RFC 3/5] compress: add API header and driver header files Vinod Koul
2011-09-02 13:36 ` Clemens Ladisch
2011-09-03 2:59 ` Vinod Koul
2011-09-02 6:06 ` [RFC 4/5] compress: add the core file Vinod Koul
2011-09-02 14:36 ` Mark Brown
2011-09-03 3:06 ` Vinod Koul
2011-09-05 17:43 ` Mark Brown
2011-09-05 21:21 ` Vinod Koul
2011-09-07 13:59 ` Dimitris Papastamos
2011-09-07 14:12 ` Dimitris Papastamos
2011-09-07 18:00 ` Vinod Koul
2011-09-07 15:20 ` Dimitris Papastamos
2011-09-07 18:05 ` Vinod Koul
2011-09-08 10:38 ` Dimitris Papastamos
2011-09-08 23:18 ` Vinod Koul
2011-09-22 13:01 ` Dimitris Papastamos
2011-09-23 5:41 ` Vinod Koul
2011-09-23 11:07 ` Vinod Koul
2011-09-02 6:06 ` [RFC 5/5] compress: add makefile and kconfig file Vinod Koul
2011-09-02 11:30 ` [RFC 0/5] compress: add compress data API to ALSA kernel Mark Brown
2011-09-02 14:04 ` Pierre-Louis Bossart
[not found] ` <000601cc6979$437b11c0$ca713540$@bossart@linux.intel.com>
2011-09-02 14:23 ` Mark Brown
2011-11-22 8:51 ` [PATCH 0/6] " Vinod Koul
2011-12-05 7:39 ` [PATCH v3 0/6] core: " Vinod Koul
2011-12-06 7:27 ` Jassi Brar
2011-12-06 8:07 ` Vinod Koul
2011-12-07 10:04 ` Vinod Koul
2011-12-07 16:15 ` Mark Brown
2011-12-13 9:02 ` [PATCH v4 " Vinod Koul
2011-12-13 9:02 ` [PATCH v4 1/6] compress API documentation Vinod Koul
2011-12-13 9:02 ` [PATCH v4 2/6] core: add support for compressed devices Vinod Koul
2011-12-22 7:34 ` Takashi Iwai
2011-12-22 8:15 ` Vinod Koul
2011-12-13 9:02 ` [PATCH v4 3/6] core: add compress parameter definations Vinod Koul
2011-12-22 7:35 ` Takashi Iwai
2011-12-22 8:16 ` Vinod Koul
2011-12-13 9:02 ` [PATCH v4 4/6] core: add API header and driver header files Vinod Koul
2011-12-13 9:02 ` [PATCH v4 5/6] core: add support for compress_offload Vinod Koul
2011-12-13 12:48 ` Nallasellan, Singaravelan
2011-12-13 14:12 ` Vinod Koul
2011-12-13 16:02 ` Nallasellan, Singaravelan
2011-12-13 17:53 ` Vinod Koul
2011-12-14 5:17 ` Nallasellan, Singaravelan
2011-12-20 9:26 ` Vinod Koul
2011-12-22 7:55 ` Takashi Iwai
2011-12-22 8:19 ` Vinod Koul
2011-12-22 8:27 ` Takashi Iwai
2011-12-22 8:31 ` Vinod Koul
2011-12-22 8:44 ` Takashi Iwai
2011-12-22 8:48 ` Vinod Koul
2011-12-22 8:51 ` Takashi Iwai
2011-12-13 9:03 ` [PATCH v4 6/6] core: add makefile and kconfig file for compress Vinod Koul
2011-12-23 5:06 ` [PATCH v5 0/6] core: add compress data API to ALSA kernel Vinod Koul
2011-12-23 9:37 ` Takashi Iwai
2011-12-23 11:37 ` Vinod Koul
2011-12-23 5:06 ` [PATCH v5 1/6] compress offload API documentation Vinod Koul
2011-12-23 5:06 ` [PATCH v5 2/6] core: add support for compressed devices Vinod Koul
2011-12-23 5:06 ` [PATCH v5 3/6] core: add compress parameter definations Vinod Koul
2011-12-23 5:06 ` [PATCH v5 4/6] core: add API header and driver header files Vinod Koul
2011-12-23 5:06 ` [PATCH v5 5/6] core: add support for compress_offload Vinod Koul
2011-12-23 5:06 ` [PATCH v5 6/6] core: add makefile and kconfig file for compress Vinod Koul
2011-12-05 7:39 ` [PATCH v3 1/6] compress API documentation Vinod Koul
2011-12-05 7:39 ` [PATCH v3 2/6] core: add support for compressed devices Vinod Koul
2011-12-05 7:39 ` [PATCH v3 3/6] core: add compress parameter definations Vinod Koul
2011-12-05 7:39 ` [PATCH v3 4/6] core: add API header and driver header files Vinod Koul
2011-12-13 6:11 ` Mark Brown
2011-12-13 6:31 ` Vinod Koul
2011-12-13 7:03 ` Takashi Iwai
2011-12-13 7:50 ` Vinod Koul
2011-12-13 7:53 ` Mark Brown
2011-12-13 9:03 ` Vinod Koul
2011-12-05 7:39 ` [PATCH v3 5/6] core: add support for compress_offload Vinod Koul
2011-12-13 6:09 ` Mark Brown
2011-12-13 6:29 ` Vinod Koul
2011-12-05 7:39 ` [PATCH v3 6/6] core: add makefile and kconfig file for compress Vinod Koul
2011-11-22 8:51 ` [PATCH 1/6] compress API documentation Vinod Koul
2011-11-22 8:51 ` [PATCH 2/6] core: add support for compressed devices Vinod Koul
2011-11-23 11:30 ` Mark Brown
2011-11-22 8:51 ` [PATCH 3/6] compress: add compress parameter definations Vinod Koul
2011-11-23 16:32 ` Mark Brown
2011-11-22 8:51 ` [PATCH 4/6] compress: add API header and driver header files Vinod Koul
2011-11-22 11:18 ` Clemens Ladisch
2011-11-22 13:14 ` Vinod Koul
2011-12-02 15:39 ` Nallasellan, Singaravelan
2011-12-02 18:58 ` Pierre-Louis Bossart
[not found] ` <000301ccb124$72a53370$57ef9a50$@bossart@linux.intel.com>
2011-12-04 7:41 ` Nallasellan, Singaravelan
2011-12-05 14:14 ` Pierre-Louis Bossart
[not found] ` <000001ccb358$2b9e4b70$82dae250$@bossart@linux.intel.com>
2011-12-05 14:19 ` Mark Brown
2011-12-06 2:55 ` Nallasellan, Singaravelan
2011-11-22 8:51 ` [PATCH 5/6] compress: add the core file Vinod Koul
2011-11-23 16:02 ` Mark Brown
2011-11-23 16:16 ` Vinod Koul
2011-11-23 16:31 ` Mark Brown
2011-11-23 16:34 ` Vinod Koul
2011-11-23 17:03 ` Takashi Iwai
2011-11-24 3:45 ` Vinod Koul
2011-11-24 8:51 ` Takashi Iwai
2011-11-24 9:32 ` Vinod Koul
2011-11-28 21:36 ` Pierre-Louis Bossart
[not found] ` <001201ccae15$c24d8bf0$46e8a3d0$@bossart@linux.intel.com>
2011-11-29 7:21 ` Takashi Iwai
2011-11-29 21:15 ` Pierre-Louis Bossart
[not found] ` <003001ccaedb$f4e30010$dea90030$@bossart@linux.intel.com>
2011-11-30 10:30 ` Mark Brown [this message]
2011-11-30 11:19 ` Takashi Iwai
2011-11-30 11:29 ` Vinod Koul
2011-11-30 11:41 ` Takashi Iwai
2011-11-30 12:00 ` Vinod Koul
2011-11-28 21:19 ` Pierre-Louis Bossart
[not found] ` <000f01ccae13$78fe38c0$6afaaa40$@bossart@linux.intel.com>
2011-11-29 7:31 ` Takashi Iwai
2011-12-01 13:28 ` Nallasellan, Singaravelan
2011-12-02 6:44 ` Vinod Koul
2011-12-02 10:17 ` Nallasellan, Singaravelan
2011-12-02 11:48 ` Vinod Koul
2011-12-02 16:24 ` Nallasellan, Singaravelan
2011-12-04 4:31 ` Vinod Koul
2011-12-04 8:14 ` Nallasellan, Singaravelan
2011-12-05 15:19 ` Pierre-Louis Bossart
[not found] ` <001501ccb361$3af49990$b0ddccb0$@bossart@linux.intel.com>
2011-12-06 3:00 ` Nallasellan, Singaravelan
2011-12-06 6:03 ` Vinod Koul
2011-12-06 8:07 ` Nallasellan, Singaravelan
2011-12-06 20:15 ` Pierre-Louis Bossart
[not found] ` <4ede780f.890bb50a.54a3.ffffcc4dSMTPIN_ADDED@mx.google.com>
[not found] ` <CAKg5Tpo6LgirbVVe9ZXNGN-xq7FTZvgAXNQ2HnXh=gwQHjn_Pw@mail.gmail.com>
2011-12-07 16:53 ` Nallasellan, Singaravelan
2011-11-22 8:52 ` [PATCH 6/6] compress: add makefile and kconfig file Vinod Koul
2011-11-23 16:03 ` Mark Brown
2011-11-23 16:23 ` Vinod Koul
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