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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Gyeongtaek Lee <gt82.lee@samsung.com>, 'Takashi Iwai' <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, khw0178.kim@samsung.com,
	kimty@samsung.com, tiwai@suse.com, lgirdwood@gmail.com,
	vkoul@kernel.org, hmseo@samsung.com, tkjung@samsung.com,
	pilsun.jang@samsung.com, s47.kang@samsung.com
Subject: Re: [PATCH] ALSA: compress: allow pause and resume during draining
Date: Tue, 29 Sep 2020 09:00:54 -0500
Message-ID: <13fad3a0-12b3-134e-5dc8-8184f1fa7021@linux.intel.com> (raw)
In-Reply-To: <000501d69641$57b66460$07232d20$@samsung.com>




>>>> Since the possible application's behavior after this pause is as same
>>>> as the normal pause (i.e. either resuming pause or dropping), I find
>>>> it OK to take the original approach.
>>> Thank you for the review.
>>> I think that I should resend the original patch.
>>
>> Let's wait a bit for other opinions.  We may add rather a new flag
>> instead of introducing a new state, too, for example.
>>
>> Also, I'm not sure about any side-effect to drivers that expect the
>> pause only during the running state.  We might need some check for a
>> capability flag?
> Ok. I will wait for more opinion and then resend fixed patch.

Question: have you thought about the case where a 'partial drain' 
happens, typically when you are doing gapless playback?

I see in snd_compress_wait_for_drain() a wait on a state different from 
DRAINING, which is precisely what would be modified with your proposal. 
It's been a while since I looked at this code but it'd be worth checking 
that the pause is supported in 'normal' and 'partial' drain cases.


  reply index

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200929084051epcas2p35fb2228ed1bdfce6a7ddf5b37c944823@epcas2p3.samsung.com>
2020-09-29  8:40 ` Gyeongtaek Lee
2020-09-29  8:54   ` Takashi Iwai
2020-09-29  9:17     ` Gyeongtaek Lee
2020-09-29 14:00       ` Pierre-Louis Bossart [this message]
2020-10-01 10:29     ` Vinod Koul
2020-10-01 15:28       ` Pierre-Louis Bossart
2020-10-06  6:21         ` Vinod Koul
2020-10-06 14:57           ` Pierre-Louis Bossart
2020-10-08  9:49             ` Gyeongtaek Lee
2020-10-09 15:13               ` Takashi Iwai
2020-10-09 17:43                 ` Jaroslav Kysela
2020-10-10  9:08                   ` Takashi Iwai
2020-10-12  5:25                     ` Vinod Koul
2020-10-12  7:01                       ` Takashi Iwai
2020-10-12 12:24                         ` Vinod Koul
2020-10-12 13:29                           ` Jaroslav Kysela
2020-10-12 13:55                             ` Vinod Koul
2020-10-12 14:10                               ` Jaroslav Kysela
2020-10-12 14:21                                 ` Takashi Iwai
2020-10-12 14:46                                   ` Jaroslav Kysela
2020-10-12 14:59                                     ` Takashi Iwai
2020-10-15 10:47                                       ` Gyeongtaek Lee
2020-10-20  5:23                                         ` Gyeongtaek Lee
2020-10-26  9:18                                         ` Gyeongtaek Lee
2020-10-26 17:01                                           ` Takashi Iwai
2020-10-27  1:56                                             ` Gyeongtaek Lee
     [not found] <CGME20200928105009epcas2p4a65d50d9d09800281395a490d1844ef3@epcas2p4.samsung.com>
2020-09-28 10:50 ` Gyeongtaek Lee
2020-09-28 11:13   ` Jaroslav Kysela
2020-09-28 14:34     ` Pierre-Louis Bossart
2020-09-29  1:51       ` Gyeongtaek Lee
2020-09-29  7:12         ` Takashi Iwai
2020-09-29 17:27           ` Jaroslav Kysela
2020-09-30  9:35             ` Takashi Iwai
2020-09-30  9:57               ` Jaroslav Kysela
2020-09-30 10:33                 ` Takashi Iwai
2020-09-30 11:23                   ` Jaroslav Kysela
2020-10-01 10:35               ` Vinod Koul

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