From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FDBBC433EF for ; Fri, 19 Nov 2021 02:04:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6D1661A81 for ; Fri, 19 Nov 2021 02:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233847AbhKSCHo (ORCPT ); Thu, 18 Nov 2021 21:07:44 -0500 Received: from twspam01.aspeedtech.com ([211.20.114.71]:5651 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233816AbhKSCHo (ORCPT ); Thu, 18 Nov 2021 21:07:44 -0500 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1AJ1cpdO078471; Fri, 19 Nov 2021 09:38:51 +0800 (GMT-8) (envelope-from jammy_huang@aspeedtech.com) Received: from [192.168.2.115] (192.168.2.115) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 19 Nov 2021 10:02:38 +0800 Message-ID: <0bed6093-0af6-4fc4-716f-6cf8b1302320@aspeedtech.com> Date: Fri, 19 Nov 2021 10:02:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1 Subject: Re: [PATCH v5 05/10] media: v4l: Add definition for the Aspeed JPEG format Content-Language: en-US To: Sakari Ailus CC: "eajames@linux.ibm.com" , "mchehab@kernel.org" , "joel@jms.id.au" , "andrew@aj.id.au" , "hverkuil-cisco@xs4all.nl" , "gregkh@linuxfoundation.org" , "laurent.pinchart@ideasonboard.com" , "linux-media@vger.kernel.org" , "openbmc@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" , "linux-aspeed@lists.ozlabs.org" , "linux-kernel@vger.kernel.org" References: <20211118074030.685-1-jammy_huang@aspeedtech.com> <20211118074030.685-6-jammy_huang@aspeedtech.com> From: Jammy Huang In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [192.168.2.115] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1AJ1cpdO078471 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sakari, On 2021/11/18 下午 08:33, Sakari Ailus wrote: > Hi Jammy, > > On Thu, Nov 18, 2021 at 03:40:26PM +0800, Jammy Huang wrote: >> This introduces support for the Aspeed JPEG format, where the new frame >> can refer to previous frame to reduce the amount of compressed data. The >> concept is similar to I/P frame of video compression. I will compare the >> new frame with previous one to decide which macroblock's data is >> changed, and only the changed macroblocks will be compressed. >> >> This Aspeed JPEG format is used by the video engine on Aspeed platforms, >> which is generally adapted for remote KVM. >> >> Signed-off-by: Jammy Huang >> --- >> v5: >> - no update >> v4: >> - new >> --- >> Documentation/media/uapi/v4l/pixfmt-reserved.rst | 12 ++++++++++++ >> drivers/media/v4l2-core/v4l2-ioctl.c | 1 + >> include/uapi/linux/videodev2.h | 1 + >> 3 files changed, 14 insertions(+) >> >> diff --git a/Documentation/media/uapi/v4l/pixfmt-reserved.rst b/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> index b2cd155e691b..23c05063133d 100644 >> --- a/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> +++ b/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> @@ -264,6 +264,18 @@ please make a proposal on the linux-media mailing list. >> of tiles, resulting in 32-aligned resolutions for the luminance plane >> and 16-aligned resolutions for the chrominance plane (with 2x2 >> subsampling). >> + * .. _V4L2-PIX-FMT-AJPG: >> + >> + - ``V4L2_PIX_FMT_AJPG`` >> + - 'AJPG' >> + - ASPEED JPEG format used by the aspeed-video driver on Aspeed platforms, >> + which is generally adapted for remote KVM. >> + On each frame compression, I will compare the new frame with previous >> + one to decide which macroblock's data is changed, and only the changed >> + macroblocks will be compressed. >> + >> + You could reference to chapter 36, Video Engine, of AST2600's datasheet >> + for more information. > Is this datasheet publicly available? Do you have a URL? Sorry, this datasheet is not publicly available. Hans mentioned this as well in the discussion below: https://lkml.org/lkml/2021/11/10/101 -- Best Regards Jammy From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40E5CC433EF for ; Fri, 19 Nov 2021 02:05:09 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7CD2D6115C for ; Fri, 19 Nov 2021 02:05:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7CD2D6115C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4HwKkC02vpz3c4X for ; Fri, 19 Nov 2021 13:05:07 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=aspeedtech.com (client-ip=211.20.114.71; helo=twspam01.aspeedtech.com; envelope-from=jammy_huang@aspeedtech.com; receiver=) Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4HwKjj4JbFz2xXZ; Fri, 19 Nov 2021 13:04:40 +1100 (AEDT) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1AJ1cpdO078471; Fri, 19 Nov 2021 09:38:51 +0800 (GMT-8) (envelope-from jammy_huang@aspeedtech.com) Received: from [192.168.2.115] (192.168.2.115) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 19 Nov 2021 10:02:38 +0800 Message-ID: <0bed6093-0af6-4fc4-716f-6cf8b1302320@aspeedtech.com> Date: Fri, 19 Nov 2021 10:02:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1 Subject: Re: [PATCH v5 05/10] media: v4l: Add definition for the Aspeed JPEG format Content-Language: en-US To: Sakari Ailus References: <20211118074030.685-1-jammy_huang@aspeedtech.com> <20211118074030.685-6-jammy_huang@aspeedtech.com> From: Jammy Huang In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [192.168.2.115] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1AJ1cpdO078471 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linux-aspeed@lists.ozlabs.org" , "andrew@aj.id.au" , "gregkh@linuxfoundation.org" , "openbmc@lists.ozlabs.org" , "eajames@linux.ibm.com" , "linux-media@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "hverkuil-cisco@xs4all.nl" , "mchehab@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "laurent.pinchart@ideasonboard.com" Errors-To: openbmc-bounces+openbmc=archiver.kernel.org@lists.ozlabs.org Sender: "openbmc" Hi Sakari, On 2021/11/18 下午 08:33, Sakari Ailus wrote: > Hi Jammy, > > On Thu, Nov 18, 2021 at 03:40:26PM +0800, Jammy Huang wrote: >> This introduces support for the Aspeed JPEG format, where the new frame >> can refer to previous frame to reduce the amount of compressed data. The >> concept is similar to I/P frame of video compression. I will compare the >> new frame with previous one to decide which macroblock's data is >> changed, and only the changed macroblocks will be compressed. >> >> This Aspeed JPEG format is used by the video engine on Aspeed platforms, >> which is generally adapted for remote KVM. >> >> Signed-off-by: Jammy Huang >> --- >> v5: >> - no update >> v4: >> - new >> --- >> Documentation/media/uapi/v4l/pixfmt-reserved.rst | 12 ++++++++++++ >> drivers/media/v4l2-core/v4l2-ioctl.c | 1 + >> include/uapi/linux/videodev2.h | 1 + >> 3 files changed, 14 insertions(+) >> >> diff --git a/Documentation/media/uapi/v4l/pixfmt-reserved.rst b/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> index b2cd155e691b..23c05063133d 100644 >> --- a/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> +++ b/Documentation/media/uapi/v4l/pixfmt-reserved.rst >> @@ -264,6 +264,18 @@ please make a proposal on the linux-media mailing list. >> of tiles, resulting in 32-aligned resolutions for the luminance plane >> and 16-aligned resolutions for the chrominance plane (with 2x2 >> subsampling). >> + * .. _V4L2-PIX-FMT-AJPG: >> + >> + - ``V4L2_PIX_FMT_AJPG`` >> + - 'AJPG' >> + - ASPEED JPEG format used by the aspeed-video driver on Aspeed platforms, >> + which is generally adapted for remote KVM. >> + On each frame compression, I will compare the new frame with previous >> + one to decide which macroblock's data is changed, and only the changed >> + macroblocks will be compressed. >> + >> + You could reference to chapter 36, Video Engine, of AST2600's datasheet >> + for more information. > Is this datasheet publicly available? Do you have a URL? Sorry, this datasheet is not publicly available. Hans mentioned this as well in the discussion below: https://lkml.org/lkml/2021/11/10/101 -- Best Regards Jammy From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C803C433F5 for ; Fri, 19 Nov 2021 02:06:13 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1E9B46115C for ; Fri, 19 Nov 2021 02:06:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1E9B46115C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; 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Fri, 19 Nov 2021 02:04:36 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1AJ1cpdO078471; Fri, 19 Nov 2021 09:38:51 +0800 (GMT-8) (envelope-from jammy_huang@aspeedtech.com) Received: from [192.168.2.115] (192.168.2.115) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 19 Nov 2021 10:02:38 +0800 Message-ID: <0bed6093-0af6-4fc4-716f-6cf8b1302320@aspeedtech.com> Date: Fri, 19 Nov 2021 10:02:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1 Subject: Re: [PATCH v5 05/10] media: v4l: Add definition for the Aspeed JPEG format Content-Language: en-US To: Sakari Ailus CC: "eajames@linux.ibm.com" , "mchehab@kernel.org" , "joel@jms.id.au" , "andrew@aj.id.au" , "hverkuil-cisco@xs4all.nl" , "gregkh@linuxfoundation.org" , "laurent.pinchart@ideasonboard.com" , "linux-media@vger.kernel.org" , "openbmc@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" , "linux-aspeed@lists.ozlabs.org" , "linux-kernel@vger.kernel.org" References: <20211118074030.685-1-jammy_huang@aspeedtech.com> <20211118074030.685-6-jammy_huang@aspeedtech.com> From: Jammy Huang In-Reply-To: X-Originating-IP: [192.168.2.115] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1AJ1cpdO078471 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211118_180435_614835_AEFE2A5E X-CRM114-Status: GOOD ( 15.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgU2FrYXJpLAoKT24gMjAyMS8xMS8xOCDkuIvljYggMDg6MzMsIFNha2FyaSBBaWx1cyB3cm90 ZToKPiBIaSBKYW1teSwKPgo+IE9uIFRodSwgTm92IDE4LCAyMDIxIGF0IDAzOjQwOjI2UE0gKzA4 MDAsIEphbW15IEh1YW5nIHdyb3RlOgo+PiBUaGlzIGludHJvZHVjZXMgc3VwcG9ydCBmb3IgdGhl IEFzcGVlZCBKUEVHIGZvcm1hdCwgd2hlcmUgdGhlIG5ldyBmcmFtZQo+PiBjYW4gcmVmZXIgdG8g cHJldmlvdXMgZnJhbWUgdG8gcmVkdWNlIHRoZSBhbW91bnQgb2YgY29tcHJlc3NlZCBkYXRhLiBU aGUKPj4gY29uY2VwdCBpcyBzaW1pbGFyIHRvIEkvUCBmcmFtZSBvZiB2aWRlbyBjb21wcmVzc2lv bi4gSSB3aWxsIGNvbXBhcmUgdGhlCj4+IG5ldyBmcmFtZSB3aXRoIHByZXZpb3VzIG9uZSB0byBk ZWNpZGUgd2hpY2ggbWFjcm9ibG9jaydzIGRhdGEgaXMKPj4gY2hhbmdlZCwgYW5kIG9ubHkgdGhl IGNoYW5nZWQgbWFjcm9ibG9ja3Mgd2lsbCBiZSBjb21wcmVzc2VkLgo+Pgo+PiBUaGlzIEFzcGVl ZCBKUEVHIGZvcm1hdCBpcyB1c2VkIGJ5IHRoZSB2aWRlbyBlbmdpbmUgb24gQXNwZWVkIHBsYXRm b3JtcywKPj4gd2hpY2ggaXMgZ2VuZXJhbGx5IGFkYXB0ZWQgZm9yIHJlbW90ZSBLVk0uCj4+Cj4+ IFNpZ25lZC1vZmYtYnk6IEphbW15IEh1YW5nIDxqYW1teV9odWFuZ0Bhc3BlZWR0ZWNoLmNvbT4K Pj4gLS0tCj4+IHY1Ogo+PiAgICAtIG5vIHVwZGF0ZQo+PiB2NDoKPj4gICAgLSBuZXcKPj4gLS0t Cj4+ICAgRG9jdW1lbnRhdGlvbi9tZWRpYS91YXBpL3Y0bC9waXhmbXQtcmVzZXJ2ZWQucnN0IHwg MTIgKysrKysrKysrKysrCj4+ICAgZHJpdmVycy9tZWRpYS92NGwyLWNvcmUvdjRsMi1pb2N0bC5j ICAgICAgICAgICAgIHwgIDEgKwo+PiAgIGluY2x1ZGUvdWFwaS9saW51eC92aWRlb2RldjIuaCAg ICAgICAgICAgICAgICAgICB8ICAxICsKPj4gICAzIGZpbGVzIGNoYW5nZWQsIDE0IGluc2VydGlv bnMoKykKPj4KPj4gZGlmZiAtLWdpdCBhL0RvY3VtZW50YXRpb24vbWVkaWEvdWFwaS92NGwvcGl4 Zm10LXJlc2VydmVkLnJzdCBiL0RvY3VtZW50YXRpb24vbWVkaWEvdWFwaS92NGwvcGl4Zm10LXJl c2VydmVkLnJzdAo+PiBpbmRleCBiMmNkMTU1ZTY5MWIuLjIzYzA1MDYzMTMzZCAxMDA2NDQKPj4g LS0tIGEvRG9jdW1lbnRhdGlvbi9tZWRpYS91YXBpL3Y0bC9waXhmbXQtcmVzZXJ2ZWQucnN0Cj4+ ICsrKyBiL0RvY3VtZW50YXRpb24vbWVkaWEvdWFwaS92NGwvcGl4Zm10LXJlc2VydmVkLnJzdAo+ PiBAQCAtMjY0LDYgKzI2NCwxOCBAQCBwbGVhc2UgbWFrZSBhIHByb3Bvc2FsIG9uIHRoZSBsaW51 eC1tZWRpYSBtYWlsaW5nIGxpc3QuCj4+ICAgCW9mIHRpbGVzLCByZXN1bHRpbmcgaW4gMzItYWxp Z25lZCByZXNvbHV0aW9ucyBmb3IgdGhlIGx1bWluYW5jZSBwbGFuZQo+PiAgIAlhbmQgMTYtYWxp Z25lZCByZXNvbHV0aW9ucyBmb3IgdGhlIGNocm9taW5hbmNlIHBsYW5lICh3aXRoIDJ4Mgo+PiAg IAlzdWJzYW1wbGluZykuCj4+ICsgICAgKiAuLiBfVjRMMi1QSVgtRk1ULUFKUEc6Cj4+ICsKPj4g KyAgICAgIC0gYGBWNEwyX1BJWF9GTVRfQUpQR2BgCj4+ICsgICAgICAtICdBSlBHJwo+PiArICAg ICAgLSBBU1BFRUQgSlBFRyBmb3JtYXQgdXNlZCBieSB0aGUgYXNwZWVkLXZpZGVvIGRyaXZlciBv biBBc3BlZWQgcGxhdGZvcm1zLAo+PiArICAgICAgICB3aGljaCBpcyBnZW5lcmFsbHkgYWRhcHRl ZCBmb3IgcmVtb3RlIEtWTS4KPj4gKyAgICAgICAgT24gZWFjaCBmcmFtZSBjb21wcmVzc2lvbiwg SSB3aWxsIGNvbXBhcmUgdGhlIG5ldyBmcmFtZSB3aXRoIHByZXZpb3VzCj4+ICsgICAgICAgIG9u ZSB0byBkZWNpZGUgd2hpY2ggbWFjcm9ibG9jaydzIGRhdGEgaXMgY2hhbmdlZCwgYW5kIG9ubHkg dGhlIGNoYW5nZWQKPj4gKyAgICAgICAgbWFjcm9ibG9ja3Mgd2lsbCBiZSBjb21wcmVzc2VkLgo+ PiArCj4+ICsgICAgICAgIFlvdSBjb3VsZCByZWZlcmVuY2UgdG8gY2hhcHRlciAzNiwgVmlkZW8g RW5naW5lLCBvZiBBU1QyNjAwJ3MgZGF0YXNoZWV0Cj4+ICsgICAgICAgIGZvciBtb3JlIGluZm9y bWF0aW9uLgo+IElzIHRoaXMgZGF0YXNoZWV0IHB1YmxpY2x5IGF2YWlsYWJsZT8gRG8geW91IGhh dmUgYSBVUkw/CgpTb3JyeSwgdGhpcyBkYXRhc2hlZXQgaXMgbm90IHB1YmxpY2x5IGF2YWlsYWJs ZS4KSGFucyBtZW50aW9uZWQgdGhpcyBhcyB3ZWxsIGluIHRoZSBkaXNjdXNzaW9uIGJlbG93OgoK aHR0cHM6Ly9sa21sLm9yZy9sa21sLzIwMjEvMTEvMTAvMTAxCgotLSAKQmVzdCBSZWdhcmRzCkph bW15CgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlu dXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt YXJtLWtlcm5lbAo=