From patchwork Tue Mar 19 07:51:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "S.J. Wang" X-Patchwork-Id: 13596373 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AB255C54E60 for ; Tue, 19 Mar 2024 08:16:56 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 250422972; Tue, 19 Mar 2024 09:16:45 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 250422972 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1710836215; bh=zItxLVW5Z3oKtQQHUpenFQi3aYHp+cZX947e2TReMKk=; h=From:To:Subject:Date:In-Reply-To:References:List-Id:List-Archive: List-Help:List-Owner:List-Post:List-Subscribe:List-Unsubscribe: From; b=fkTLaDN4HKJGX7eAjcUFVuNS4/o7U1CBTI8aXLpoI1MrONezHJMNJveRmPXM8v7LJ Xw3cWrp7NwYjUDdIp/JcumXWPmMYTgad077HfPBVGkU1NkA2X3WmPOAsNloxiGRqK7 dhQQgeFgr/F5lFh+qMRhjX2Ez6l7maCo4slAgpTg= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 20E69F805D7; Tue, 19 Mar 2024 09:15:57 +0100 (CET) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 72C19F805E6; Tue, 19 Mar 2024 09:15:56 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 13A33F802DB; Tue, 19 Mar 2024 09:10:09 +0100 (CET) Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id A2461F8057A for ; Tue, 19 Mar 2024 09:08:06 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz A2461F8057A Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 5CA53201E5B; Tue, 19 Mar 2024 09:08:06 +0100 (CET) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 01887201E62; Tue, 19 Mar 2024 09:08:06 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id EC79D1834890; Tue, 19 Mar 2024 16:08:03 +0800 (+08) From: Shengjiu Wang To: hverkuil@xs4all.nl, sakari.ailus@iki.fi, tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v15 11/16] media: uapi: Add audio rate controls support Date: Tue, 19 Mar 2024 15:51:09 +0800 Message-Id: <1710834674-3285-12-git-send-email-shengjiu.wang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1710834674-3285-1-git-send-email-shengjiu.wang@nxp.com> References: <1710834674-3285-1-git-send-email-shengjiu.wang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Message-ID-Hash: EHOKKPT66B5VN2OGES6W5Y6PURVZSXP4 X-Message-ID-Hash: EHOKKPT66B5VN2OGES6W5Y6PURVZSXP4 X-MailFrom: shengjiu.wang@nxp.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Add V4L2_CID_M2M_AUDIO_SOURCE_RATE and V4L2_CID_M2M_AUDIO_DEST_RATE new IDs for rate control. Add V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET and V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET for clock drift. Signed-off-by: Shengjiu Wang --- .../media/v4l/ext-ctrls-audio-m2m.rst | 38 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 6 +++ include/uapi/linux/v4l2-controls.h | 5 +++ 3 files changed, 49 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst index 82d2ecedbfee..b137b7c442e6 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst @@ -19,3 +19,41 @@ Audio M2M Control IDs The Audio M2M class descriptor. Calling :ref:`VIDIOC_QUERYCTRL` for this control will return a description of this control class. + +.. _v4l2-audio-asrc: + +``V4L2_CID_M2M_AUDIO_SOURCE_RATE (integer menu)`` + This control specifies the audio source sample rate, unit is Hz + +``V4L2_CID_M2M_AUDIO_DEST_RATE (integer menu)`` + This control specifies the audio destination sample rate, unit is Hz + +``V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET (fixed point)`` + This control specifies the offset from the audio source sample rate, + unit is Hz. + + The offset compensates for any clock drift. The actual source audio + sample rate is the ideal source audio sample rate from + ``V4L2_CID_M2M_AUDIO_SOURCE_RATE`` plus this fixed point offset. + + The audio source clock may have some drift. Reducing or increasing the + audio sample rate dynamically to ensure that Sample Rate Converter is + working on the real sample rate, this feature is for the Asynchronous + Sample Rate Converter module. + So, userspace would be expected to be monitoring such drift + and increasing/decreasing the sample frequency as needed by this control. + +``V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET (fixed point)`` + This control specifies the offset from the audio destination sample rate, + unit is Hz. + + The offset compensates for any clock drift. The actual destination audio + sample rate is the ideal source audio sample rate from + ``V4L2_CID_M2M_AUDIO_DEST_RATE`` plus this fixed point offset. + + The audio destination clock may have some drift. Reducing or increasing + the audio sample rate dynamically to ensure that sample rate converter + is working on the real sample rate, this feature is for the Asynchronous + Sample Rate Converter module. + So, userspace would be expected to be monitoring such drift + and increasing/decreasing the sample frequency as needed by this control. diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index 2a85ea3dc92f..91e1f5348c23 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -1245,6 +1245,8 @@ const char *v4l2_ctrl_get_name(u32 id) /* Audio M2M controls */ case V4L2_CID_M2M_AUDIO_CLASS: return "Audio M2M Controls"; + case V4L2_CID_M2M_AUDIO_SOURCE_RATE: return "Audio Source Sample Rate"; + case V4L2_CID_M2M_AUDIO_DEST_RATE: return "Audio Destination Sample Rate"; default: return NULL; } @@ -1606,6 +1608,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: *type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY; break; + case V4L2_CID_M2M_AUDIO_SOURCE_RATE: + case V4L2_CID_M2M_AUDIO_DEST_RATE: + *type = V4L2_CTRL_TYPE_INTEGER_MENU; + break; default: *type = V4L2_CTRL_TYPE_INTEGER; break; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index a8b4b830c757..30129ccdc282 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -3495,6 +3495,11 @@ struct v4l2_ctrl_av1_film_grain { #define V4L2_CID_M2M_AUDIO_CLASS_BASE (V4L2_CTRL_CLASS_M2M_AUDIO | 0x900) #define V4L2_CID_M2M_AUDIO_CLASS (V4L2_CTRL_CLASS_M2M_AUDIO | 1) +#define V4L2_CID_M2M_AUDIO_SOURCE_RATE (V4L2_CID_M2M_AUDIO_CLASS_BASE + 0) +#define V4L2_CID_M2M_AUDIO_DEST_RATE (V4L2_CID_M2M_AUDIO_CLASS_BASE + 1) +#define V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET (V4L2_CID_M2M_AUDIO_CLASS_BASE + 2) +#define V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET (V4L2_CID_M2M_AUDIO_CLASS_BASE + 3) + /* MPEG-compression definitions kept for backwards compatibility */ #ifndef __KERNEL__ #define V4L2_CTRL_CLASS_MPEG V4L2_CTRL_CLASS_CODEC