From patchwork Tue Jul 21 07:45:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 11675109 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 87A786C1 for ; Tue, 21 Jul 2020 07:48:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69CC122CA0 for ; Tue, 21 Jul 2020 07:48:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="cZ9RE5fP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725891AbgGUHsI (ORCPT ); Tue, 21 Jul 2020 03:48:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726389AbgGUHsH (ORCPT ); Tue, 21 Jul 2020 03:48:07 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4096C0619D8 for ; Tue, 21 Jul 2020 00:48:06 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id h22so23012489lji.9 for ; Tue, 21 Jul 2020 00:48:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=9fj+mlGbPwbJel6oxJ0D6OKXqr3G/qYico6GQrfC1qA=; b=cZ9RE5fPSflQWEsddknmkKOYwdvv9eV+TRDLjiyN0BX0Hr600TOyTuLrq9FQn1KT5S OOQR2+fbkdsI3nnYTEjTau9KeNre62JPteKeBxzMmUM4xaakYJM5Esfy1wlVIhZhKNpJ k3cFbxc8olENVw5Pk1gTLP33hTMTHynfKaL7KyTj1sF/Dgxfmxn8LX14N3S0A13n35am +l2sgUK+cbzhZSyqpFe7RSUh+ODJCxNxE86Y8qwsVSC3B5PmGE9qmsdPJrrVs83b0s/D zXlUtLcw/Cfli+yx49HUr71aZm43kaWJL6wekqUFiBD5piMa7YKGUPSZT41S15cy3Pgk /dZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9fj+mlGbPwbJel6oxJ0D6OKXqr3G/qYico6GQrfC1qA=; b=pNbY67jwIqCU774RwPPTs1pfspgqRBc3uu3RocK8DhP9jm170bXKBoiDLISPkQ1feR BZnyAZf/5OveM/8M+AM2alfpRVQjHQUpGPhN3PLpR/W7qVmW2XNRnArOdV5HH9n3kdIU jcSf5FIf6b5HA8v4F3757b0dsPjKX9SZAJLuCn936G0ojloda5BNPLB8llArCECTM6cZ lqJ98+BMrT6ecemKZwbIcxa2WHjPKKvBRIFgh4lZ5h51eGub5IqEhMoHc7C+iBQLjtQb qqYmDLj/w3+PHBRL/IKLM7fjGJoH9vK4CaX+ccpszFZaCgRz1SepXRHfmCTYHobz25iz Jq0Q== X-Gm-Message-State: AOAM5315Zlkjj/v13b1YRkr1umeDSE/ZEYJc6Pt7O2WAwKKdEQ3dK23+ yPsWhgFygzz7aJ2BK1pKTYJ7fUzTsyU= X-Google-Smtp-Source: ABdhPJymcoDeM/UpJDvJp0uFJhhf4P4WUSwQOIlEDLwYBl27ww4QUTQeqpTuZ8eoq9uH2nmBgETLLg== X-Received: by 2002:a05:651c:319:: with SMTP id a25mr12603508ljp.272.1595317684778; Tue, 21 Jul 2020 00:48:04 -0700 (PDT) Received: from localhost.localdomain ([195.24.90.54]) by smtp.gmail.com with ESMTPSA id d2sm4045334ljg.6.2020.07.21.00.47.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2020 00:48:04 -0700 (PDT) From: Stanimir Varbanov To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Mauro Carvalho Chehab , Kyungmin Park , Kamil Debski , Jeongtae Park , Andrzej Hajda , Ezequiel Garcia , Maheshwar Ajja , Nicolas Dufresne , Stanimir Varbanov Subject: [PATCH v2 1/6] media: v4l2-ctrls: Add encoder constant quality control Date: Tue, 21 Jul 2020 10:45:33 +0300 Message-Id: <20200721074538.505-2-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200721074538.505-1-stanimir.varbanov@linaro.org> References: <20200721074538.505-1-stanimir.varbanov@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Maheshwar Ajja When V4L2_CID_MPEG_VIDEO_BITRATE_MODE value is V4L2_MPEG_VIDEO_BITRATE_MODE_CQ, encoder will produce constant quality output indicated by V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY control value. Encoder will choose appropriate quantization parameter and bitrate to produce requested frame quality level. Signed-off-by: Maheshwar Ajja Reviewed-by: Hans Verkuil Signed-off-by: Stanimir Varbanov --- .../userspace-api/media/v4l/ext-ctrls-codec.rst | 10 ++++++++++ drivers/media/v4l2-core/v4l2-ctrls.c | 2 ++ include/uapi/linux/v4l2-controls.h | 2 ++ 3 files changed, 14 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index d0d506a444b1..b9d3f7ae6486 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -581,6 +581,8 @@ enum v4l2_mpeg_video_bitrate_mode - - Variable bitrate * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CBR`` - Constant bitrate + * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CQ`` + - Constant quality @@ -592,6 +594,14 @@ enum v4l2_mpeg_video_bitrate_mode - the average video bitrate. It is ignored if the video bitrate mode is set to constant bitrate. +``V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY (integer)`` + Constant quality level control. This control is applicable when + ``V4L2_CID_MPEG_VIDEO_BITRATE_MODE`` value is + ``V4L2_MPEG_VIDEO_BITRATE_MODE_CQ``. Valid range is 1 to 100 + where 1 indicates lowest quality and 100 indicates highest quality. + Encoder will decide the appropriate quantization parameter and + bitrate to produce requested frame quality. + ``V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION (integer)`` For every captured frame, skip this many subsequent frames (default 0). diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 3f3fbcd60cc6..bc00d02e411f 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -200,6 +200,7 @@ const char * const *v4l2_ctrl_get_menu(u32 id) static const char * const mpeg_video_bitrate_mode[] = { "Variable Bitrate", "Constant Bitrate", + "Constant Quality", NULL }; static const char * const mpeg_stream_type[] = { @@ -832,6 +833,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; + case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality"; case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index 62271418c1be..0f7e4388dcce 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -375,6 +375,7 @@ enum v4l2_mpeg_video_aspect { enum v4l2_mpeg_video_bitrate_mode { V4L2_MPEG_VIDEO_BITRATE_MODE_VBR = 0, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR = 1, + V4L2_MPEG_VIDEO_BITRATE_MODE_CQ = 2, }; #define V4L2_CID_MPEG_VIDEO_BITRATE (V4L2_CID_MPEG_BASE+207) #define V4L2_CID_MPEG_VIDEO_BITRATE_PEAK (V4L2_CID_MPEG_BASE+208) @@ -742,6 +743,7 @@ enum v4l2_cid_mpeg_video_hevc_size_of_length_field { #define V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR (V4L2_CID_MPEG_BASE + 642) #define V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES (V4L2_CID_MPEG_BASE + 643) #define V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR (V4L2_CID_MPEG_BASE + 644) +#define V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY (V4L2_CID_MPEG_BASE + 645) /* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */ #define V4L2_CID_MPEG_CX2341X_BASE (V4L2_CTRL_CLASS_MPEG | 0x1000)