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[2620:137:e000::1:20]) by mx.google.com with ESMTP id y3-20020a17090629c300b00988939ad0bdsi11164986eje.321.2023.08.02.11.00.06; Wed, 02 Aug 2023 11:00:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=s2qTYnVT; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233225AbjHBRbI (ORCPT + 99 others); Wed, 2 Aug 2023 13:31:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231604AbjHBRar (ORCPT ); Wed, 2 Aug 2023 13:30:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F6BF4482; Wed, 2 Aug 2023 10:28:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D1BB661A7E; Wed, 2 Aug 2023 17:28:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 39DCEC433CD; Wed, 2 Aug 2023 17:28:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690997308; bh=fZOqG176cU7NTL9kF5IUl1tJY6WVyVd2yvYUysK5c4Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=s2qTYnVTVxmoM/7E/k8f+YVgG+VoGlUIkCW4hUuPFLuW45Gpukag9xjM4G3yNBRFf F9fCcepA0IJAxVfYgBXTi8XC7/fq7AcFLOvA/w5RvjjHUI+sm7qsyIdmxRSymToi9l yElDU1nHeyyAjVpoQg5Q5NsbrP+YDFUWrR1m5qES87cZqrJ3NPRmGCKpcEEFbO18tz PjSrySyhW7OxIuJFh+AsVT0s3SIttTqOByGvWzsj/DE8J1hbh+ezaer48zzC6FqYxG UbTNdG7cNb+U30jy6EPoOvwQU08wmaPJKQecvoO+Q9ZB6nl+DEYqcINItbtYUY9/HA OxkuVgfo611Cg== Date: Wed, 2 Aug 2023 18:28:21 +0100 From: Mark Brown To: Shengjiu Wang Cc: Takashi Iwai , Hans Verkuil , Shengjiu Wang , sakari.ailus@iki.fi, tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [RFC PATCH v2 0/7] Add audio support in v4l2 framework Message-ID: <844ef9b6-d5e2-46a9-b7a5-7ee86a2e449c@sirena.org.uk> References: <1690265540-25999-1-git-send-email-shengjiu.wang@nxp.com> <47d66c28-1eb2-07f5-d6f9-779d675aefe8@xs4all.nl> <87il9xu1ro.wl-tiwai@suse.de> <87il9xoddo.wl-tiwai@suse.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="MdG0m2yIP0FKio4T" Content-Disposition: inline In-Reply-To: X-Cookie: Humpty Dumpty was pushed. X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --MdG0m2yIP0FKio4T Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote: > Currently the ASRC in ALSA is to connect to another I2S device as > a sound card. But we'd like to the ASRC can be used by user space directly > that user space application can get the output after conversion from ASRC. That sort of use case would be handled via DPCM at the minute, though persuading it to connect two front ends together might be fun (which is the sort of reason why we want to push digital information down into DAPM and make everything a component). --MdG0m2yIP0FKio4T Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmTKkjQACgkQJNaLcl1U h9A05Qf8DvVF+7HkTrWpZeLLTiun4dI0bUwdJ7dBv/9eO2gLeD8aonbFN/iOGUS3 6HQafM/WVAHT67s9CThpIHGG8oWuubOG2Na3mKSs3xD+zRf4NVxpUN9+2JclaYtt zKwBd+OYExLP/x/6qTGyqQi5BC0pmgpk73+mQtRRVClGOdjsfE3ke6TWvOBsIUsZ +l3hAMxeKmIgczEq5MkPahD2mfN0CZgbCwaFA2zriaJXCPxPP/YFvYf+Mli8KDBK 6eRZS7e6SHICYPyqngTDICpj6MbiIxCHm7qIKEboyK5C0cW8PR52o6fbyN0XAHxc sNfbpJop+bjYwFJQnjwlPTzGqO5cgg== =0H5v -----END PGP SIGNATURE----- --MdG0m2yIP0FKio4T--