[{"id":32345,"web_url":"https://patchwork.libcamera.org/comment/32345/","msgid":"<87db9a48-cd16-4095-8db7-e2670ad5c8ca@collabora.com>","date":"2024-11-24T16:10:15","subject":"Re: [PATCH 4/9] libcamera: software_isp: Use common code to store\n\tdebayered pixels","submitter":{"id":140,"url":"https://patchwork.libcamera.org/api/people/140/","name":"Robert Mader","email":"robert.mader@collabora.com"},"content":"This temporarily introduces a red <-> blue color swap, see below.\n\nOn 20.11.24 19:00, Milan Zamazal wrote:\n> The debayering macros use the same pattern, let's extract it to a common\n> macro. This reduces code duplication a bit now and it'll make changes\n> of debayering easier when color correction matrix is introduced.\n>\n> Signed-off-by: Milan Zamazal \n> ---\n> src/libcamera/software_isp/debayer_cpu.cpp | 56 +++++++++++-----------\n> 1 file changed, 28 insertions(+), 28 deletions(-)\n>\n> diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp\n> index cf5ecdf7a..b9497d574 100644\n> --- a/src/libcamera/software_isp/debayer_cpu.cpp\n> +++ b/src/libcamera/software_isp/debayer_cpu.cpp\n> @@ -61,57 +61,57 @@ DebayerCpu::~DebayerCpu() = default;\n> \tconst pixel_t *curr = (const pixel_t *)src[1] + xShift_; \\\n> \tconst pixel_t *next = (const pixel_t *)src[2] + xShift_;\n> \n> +#define STORE_PIXEL(b, g, r) \\\n> +\t*dst++ = blue_[r]; \\\n> +\t*dst++ = green_[g]; \\\n> +\t*dst++ = red_[b]; \\\n\nblue_[r] -> blue_[b] and red_[b] -> red_[r]\n\n> +\tif constexpr (addAlphaByte) \\\n> +\t\t*dst++ = 255; \\\n> +\tx++;\n> +\n> /*\n> * RGR\n> * GBG\n> * RGR\n> */\n> -#define BGGR_BGR888(p, n, div) \\\n> -\t*dst++ = blue_[curr[x] / (div)]; \\\n> -\t*dst++ = green_[(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div))]; \\\n> -\t*dst++ = red_[(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div))]; \\\n> -\tif constexpr (addAlphaByte) \\\n> -\t\t*dst++ = 255; \\\n> -\tx++;\n> +#define BGGR_BGR888(p, n, div) \\\n> +\tSTORE_PIXEL( \\\n> +\t\tcurr[x] / (div), \\\n> +\t\t(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div)), \\\n> +\t\t(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div)))\n> \n> /*\n> * GBG\n> * RGR\n> * GBG\n> */\n> -#define GRBG_BGR888(p, n, div) \\\n> -\t*dst++ = blue_[(prev[x] + next[x]) / (2 * (div))]; \\\n> -\t*dst++ = green_[curr[x] / (div)]; \\\n> -\t*dst++ = red_[(curr[x - p] + curr[x + n]) / (2 * (div))]; \\\n> -\tif constexpr (addAlphaByte) \\\n> -\t\t*dst++ = 255; \\\n> -\tx++;\n> +#define GRBG_BGR888(p, n, div) \\\n> +\tSTORE_PIXEL( \\\n> +\t\t(prev[x] + next[x]) / (2 * (div)), \\\n> +\t\tcurr[x] / (div), \\\n> +\t\t(curr[x - p] + curr[x + n]) / (2 * (div)))\n> \n> /*\n> * GRG\n> * BGB\n> * GRG\n> */\n> -#define GBRG_BGR888(p, n, div) \\\n> -\t*dst++ = blue_[(curr[x - p] + curr[x + n]) / (2 * (div))]; \\\n> -\t*dst++ = green_[curr[x] / (div)]; \\\n> -\t*dst++ = red_[(prev[x] + next[x]) / (2 * (div))]; \\\n> -\tif constexpr (addAlphaByte) \\\n> -\t\t*dst++ = 255; \\\n> -\tx++;\n> +#define GBRG_BGR888(p, n, div) \\\n> +\tSTORE_PIXEL( \\\n> +\t\t(curr[x - p] + curr[x + n]) / (2 * (div)), \\\n> +\t\tcurr[x] / (div), \\\n> +\t\t(prev[x] + next[x]) / (2 * (div)))\n> \n> /*\n> * BGB\n> * GRG\n> * BGB\n> */\n> -#define RGGB_BGR888(p, n, div) \\\n> -\t*dst++ = blue_[(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div))]; \\\n> -\t*dst++ = green_[(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div))]; \\\n> -\t*dst++ = red_[curr[x] / (div)]; \\\n> -\tif constexpr (addAlphaByte) \\\n> -\t\t*dst++ = 255; \\\n> -\tx++;\n> +#define RGGB_BGR888(p, n, div) \\\n> +\tSTORE_PIXEL( \\\n> +\t\t(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div)), \\\n> +\t\t(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div)), \\\n> +\t\tcurr[x] / (div))\n> \n> template\n> void DebayerCpu::debayer8_BGBG_BGR888(uint8_t *dst, const uint8_t *src[])","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 44074BD808\n\tfor ;\n\tSun, 24 Nov 2024 16:10:23 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 95A4A65FF1;\n\tSun, 24 Nov 2024 17:10:22 +0100 (CET)","from sender4-op-o12.zoho.com (sender4-op-o12.zoho.com\n\t[136.143.188.12])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 2288E65FC6\n\tfor ;\n\tSun, 24 Nov 2024 17:10:20 +0100 (CET)","by mx.zohomail.com with SMTPS id 173246461704318.656962854964718; 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mx.zohomail.com;\n\tdkim=pass header.i=collabora.com;\n\tspf=pass smtp.mailfrom=robert.mader@collabora.com;\n\tdmarc=pass header.from=","DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1732464619;\n\ts=zohomail; d=collabora.com; i=robert.mader@collabora.com;\n\th=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To:Cc;\n\tbh=DoYwkwBpZcrbgzzHyCPchIEIshi3xO2MUZ1NP9nTBqI=;\n\tb=f27d4qP6l9GPQ0o0FquDVrkt1VGoKukxNIkAxn7p0K9Vmv++Do3kQwDojojKr9YW\n\t4V9DmN+9otqq+RbG+XXmhWX8xX5ARhXBn9FUzOibzm+q0OE/mfoEDNyKQ9j7+4qflBD\n\tfQ22pHB9/5ewdSzfndLT5k2RkDhb/fxq3LEVdhlQ=","Message-ID":"<87db9a48-cd16-4095-8db7-e2670ad5c8ca@collabora.com>","Date":"Sun, 24 Nov 2024 17:10:15 +0100","MIME-Version":"1.0","User-Agent":"Mozilla Thunderbird","Subject":"Re: [PATCH 4/9] libcamera: software_isp: Use common code to store\n\tdebayered pixels","To":"libcamera-devel@lists.libcamera.org","References":"<20241120180104.1221846-1-mzamazal@redhat.com>\n\t<20241120180104.1221846-5-mzamazal@redhat.com>","Content-Language":"en-US","From":"Robert Mader ","In-Reply-To":"<20241120180104.1221846-5-mzamazal@redhat.com>","Content-Type":"text/plain; charset=UTF-8; format=flowed","Content-Transfer-Encoding":"7bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":32360,"web_url":"https://patchwork.libcamera.org/comment/32360/","msgid":"<87serf60su.fsf@redhat.com>","date":"2024-11-25T10:54:41","subject":"Re: [PATCH 4/9] libcamera: software_isp: Use common code to store\n\tdebayered pixels","submitter":{"id":177,"url":"https://patchwork.libcamera.org/api/people/177/","name":"Milan Zamazal","email":"mzamazal@redhat.com"},"content":"Hi Robert,\n\nRobert Mader writes:\n\n> This temporarily introduces a red <-> blue color swap, see below.\n>\n> On 20.11.24 19:00, Milan Zamazal wrote:\n>> The debayering macros use the same pattern, let's extract it to a common\n>> macro. This reduces code duplication a bit now and it'll make changes\n>> of debayering easier when color correction matrix is introduced.\n>>\n>> Signed-off-by: Milan Zamazal \n>> ---\n>> src/libcamera/software_isp/debayer_cpu.cpp | 56 +++++++++++-----------\n>> 1 file changed, 28 insertions(+), 28 deletions(-)\n>>\n>> diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp\n>> index cf5ecdf7a..b9497d574 100644\n>> --- a/src/libcamera/software_isp/debayer_cpu.cpp\n>> +++ b/src/libcamera/software_isp/debayer_cpu.cpp\n>> @@ -61,57 +61,57 @@ DebayerCpu::~DebayerCpu() = default;\n>> \tconst pixel_t *curr = (const pixel_t *)src[1] + xShift_; \\\n>> \tconst pixel_t *next = (const pixel_t *)src[2] + xShift_;\n>> +#define STORE_PIXEL(b, g, r) \\\n>> +\t*dst++ = blue_[r]; \\\n>> +\t*dst++ = green_[g]; \\\n>> +\t*dst++ = red_[b]; \\\n>\n> blue_[r] -> blue_[b] and red_[b] -> red_[r]\n\nOh, thank you, I'll fix it in v2.\n\n>> +\tif constexpr (addAlphaByte) \\\n>> +\t\t*dst++ = 255; \\\n>> +\tx++;\n>> +\n>> /*\n>> * RGR\n>> * GBG\n>> * RGR\n>> */\n>> -#define BGGR_BGR888(p, n, div) \\\n>> -\t*dst++ = blue_[curr[x] / (div)]; \\\n>> -\t*dst++ = green_[(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div))]; \\\n>> -\t*dst++ = red_[(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div))]; \\\n>> -\tif constexpr (addAlphaByte) \\\n>> -\t\t*dst++ = 255; \\\n>> -\tx++;\n>> +#define BGGR_BGR888(p, n, div) \\\n>> +\tSTORE_PIXEL( \\\n>> +\t\tcurr[x] / (div), \\\n>> +\t\t(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div)), \\\n>> +\t\t(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div)))\n>> /*\n>> * GBG\n>> * RGR\n>> * GBG\n>> */\n>> -#define GRBG_BGR888(p, n, div) \\\n>> -\t*dst++ = blue_[(prev[x] + next[x]) / (2 * (div))]; \\\n>> -\t*dst++ = green_[curr[x] / (div)]; \\\n>> -\t*dst++ = red_[(curr[x - p] + curr[x + n]) / (2 * (div))]; \\\n>> -\tif constexpr (addAlphaByte) \\\n>> -\t\t*dst++ = 255; \\\n>> -\tx++;\n>> +#define GRBG_BGR888(p, n, div) \\\n>> +\tSTORE_PIXEL( \\\n>> +\t\t(prev[x] + next[x]) / (2 * (div)), \\\n>> +\t\tcurr[x] / (div), \\\n>> +\t\t(curr[x - p] + curr[x + n]) / (2 * (div)))\n>> /*\n>> * GRG\n>> * BGB\n>> * GRG\n>> */\n>> -#define GBRG_BGR888(p, n, div) \\\n>> -\t*dst++ = blue_[(curr[x - p] + curr[x + n]) / (2 * (div))]; \\\n>> -\t*dst++ = green_[curr[x] / (div)]; \\\n>> -\t*dst++ = red_[(prev[x] + next[x]) / (2 * (div))]; \\\n>> -\tif constexpr (addAlphaByte) \\\n>> -\t\t*dst++ = 255; \\\n>> -\tx++;\n>> +#define GBRG_BGR888(p, n, div) \\\n>> +\tSTORE_PIXEL( \\\n>> +\t\t(curr[x - p] + curr[x + n]) / (2 * (div)), \\\n>> +\t\tcurr[x] / (div), \\\n>> +\t\t(prev[x] + next[x]) / (2 * (div)))\n>> /*\n>> * BGB\n>> * GRG\n>> * BGB\n>> */\n>> -#define RGGB_BGR888(p, n, div) \\\n>> -\t*dst++ = blue_[(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div))]; \\\n>> -\t*dst++ = green_[(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div))]; \\\n>> -\t*dst++ = red_[curr[x] / (div)]; \\\n>> -\tif constexpr (addAlphaByte) \\\n>> -\t\t*dst++ = 255; \\\n>> -\tx++;\n>> +#define RGGB_BGR888(p, n, div) \\\n>> +\tSTORE_PIXEL( \\\n>> +\t\t(prev[x - p] + prev[x + n] + next[x - p] + next[x + n]) / (4 * (div)), \\\n>> +\t\t(prev[x] + curr[x - p] + curr[x + n] + next[x]) / (4 * (div)), \\\n>> +\t\tcurr[x] / (div))\n>> template\n>> void DebayerCpu::debayer8_BGBG_BGR888(uint8_t *dst, const uint8_t *src[])","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 921CDBD160\n\tfor ;\n\tMon, 25 Nov 2024 10:54:50 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 073CD66020;\n\tMon, 25 Nov 2024 11:54:50 +0100 (CET)","from us-smtp-delivery-124.mimecast.com\n\t(us-smtp-delivery-124.mimecast.com [170.10.129.124])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 01A7366010\n\tfor ;\n\tMon, 25 Nov 2024 11:54:47 +0100 (CET)","from mail-wm1-f70.google.com (mail-wm1-f70.google.com\n\t[209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS\n\t(version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id\n\tus-mta-679-vqOX2J6SOiuuXjCDgDn0XA-1; Mon, 25 Nov 2024 05:54:45 -0500","by mail-wm1-f70.google.com with SMTP id\n\t5b1f17b1804b1-4349d895ef8so11328115e9.0\n\tfor ;\n\tMon, 25 Nov 2024 02:54:45 -0800 (PST)","from nuthatch (ip-77-48-47-2.net.vodafone.cz. 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