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{
    "id": 19470,
    "url": "https://patchwork.libcamera.org/api/patches/19470/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/19470/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20240130181311.43745-2-hdegoede@redhat.com>",
    "date": "2024-01-30T18:13:10",
    "name": "[RFC,1/2] libcamera: debayer: Move sizes() to DebayerCpu implementation",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "5deb7a5792b57f2afd8aeddcb72a5484293ad863",
    "submitter": {
        "id": 102,
        "url": "https://patchwork.libcamera.org/api/people/102/?format=api",
        "name": "Hans de Goede",
        "email": "hdegoede@redhat.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/19470/mbox/",
    "series": [
        {
            "id": 4162,
            "url": "https://patchwork.libcamera.org/api/series/4162/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4162",
            "date": "2024-01-30T18:13:09",
            "name": "libcamera: debayer_cpu: Stop requiring 2 lines of padding at the top/bottom",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4162/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/19470/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/19470/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
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        "X-MC-Unique": "J7japHXTMIKBxBC9mitQ8Q-1",
        "From": "Hans de Goede <hdegoede@redhat.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Subject": "[RFC 1/2] libcamera: debayer: Move sizes() to DebayerCpu\n\timplementation",
        "Date": "Tue, 30 Jan 2024 19:13:10 +0100",
        "Message-ID": "<20240130181311.43745-2-hdegoede@redhat.com>",
        "In-Reply-To": "<20240130181311.43745-1-hdegoede@redhat.com>",
        "References": "<20240130181311.43745-1-hdegoede@redhat.com>",
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        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
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        "List-Id": "<libcamera-devel.lists.libcamera.org>",
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        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Cc": "Maxime Ripard <mripard@redhat.com>, Pavel Machek <pavel@ucw.cz>,\n\tBryan O'Donoghue <bryan.odonoghue@linaro.org>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "The amount of padding needed for interpolation at the borders depends\non the implementation.\n\nStop assuming that all implementations need a pattern-width x pattern-height\nborder around the output size for padding and move the sizes()\nmethod out of the base-class.\n\nSigned-off-by: Hans de Goede <hdegoede@redhat.com>\n---\n .../libcamera/internal/software_isp/debayer.h | 26 +------------------\n .../internal/software_isp/debayer_cpu.h       |  1 +\n src/libcamera/software_isp/debayer_cpu.cpp    | 26 +++++++++++++++++++\n 3 files changed, 28 insertions(+), 25 deletions(-)",
    "diff": "diff --git a/include/libcamera/internal/software_isp/debayer.h b/include/libcamera/internal/software_isp/debayer.h\nindex 9109bf32..ab1ce994 100644\n--- a/include/libcamera/internal/software_isp/debayer.h\n+++ b/include/libcamera/internal/software_isp/debayer.h\n@@ -94,31 +94,7 @@ public:\n \t *\n \t * \\return The valid size ranges or an empty range if there are none.\n \t */\n-\tSizeRange sizes(PixelFormat inputFormat, const Size &inputSize)\n-\t{\n-\t\tSize pattern_size = patternSize(inputFormat);\n-\n-\t\tif (pattern_size.isNull())\n-\t\t\treturn {};\n-\n-\t\t/*\n-\t\t * For debayer interpolation a border of pattern-height x pattern-width\n-\t\t * is kept around the entire image. Combined with a minimum-size of\n-\t\t * pattern-height x pattern-width this means the input-size needs to be\n-\t\t * at least (3 * pattern-height) x (3 * pattern-width).\n-\t\t */\n-\t\tif (inputSize.width < (3 * pattern_size.width) ||\n-\t\t    inputSize.height < (3 * pattern_size.height)) {\n-\t\t\tLOG(Debayer, Warning)\n-\t\t\t\t<< \"Input format size too small: \" << inputSize.toString();\n-\t\t\treturn {};\n-\t\t}\n-\n-\t\treturn SizeRange(Size(pattern_size.width, pattern_size.height),\n-\t\t\t\t Size((inputSize.width - 2 * pattern_size.width) & ~(pattern_size.width - 1),\n-\t\t\t\t      (inputSize.height - 2 * pattern_size.height) & ~(pattern_size.height - 1)),\n-\t\t\t\t pattern_size.width, pattern_size.height);\n-\t}\n+\tvirtual SizeRange sizes(PixelFormat inputFormat, const Size &inputSize) = 0;\n \n \t/**\n \t * \\brief Signals when the input buffer is ready.\ndiff --git a/include/libcamera/internal/software_isp/debayer_cpu.h b/include/libcamera/internal/software_isp/debayer_cpu.h\nindex 52af117f..bcb634d5 100644\n--- a/include/libcamera/internal/software_isp/debayer_cpu.h\n+++ b/include/libcamera/internal/software_isp/debayer_cpu.h\n@@ -62,6 +62,7 @@ public:\n \t\tstrideAndFrameSize(const PixelFormat &outputFormat, const Size &size);\n \n \tvoid process(FrameBuffer *input, FrameBuffer *output, DebayerParams params);\n+\tSizeRange sizes(PixelFormat inputFormat, const Size &inputSize);\n \n \t/**\n \t * \\brief Get the file descriptor for the statistics.\ndiff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp\nindex b6393925..14fc383e 100644\n--- a/src/libcamera/software_isp/debayer_cpu.cpp\n+++ b/src/libcamera/software_isp/debayer_cpu.cpp\n@@ -945,4 +945,30 @@ void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams\n \tinputBufferReady.emit(input);\n }\n \n+SizeRange DebayerCpu::sizes(PixelFormat inputFormat, const Size &inputSize)\n+{\n+\tSize pattern_size = patternSize(inputFormat);\n+\n+\tif (pattern_size.isNull())\n+\t\treturn {};\n+\n+\t/*\n+\t * For debayer interpolation a border of pattern-height x pattern-width\n+\t * is kept around the entire image. Combined with a minimum-size of\n+\t * pattern-height x pattern-width this means the input-size needs to be\n+\t * at least (3 * pattern-height) x (3 * pattern-width).\n+\t */\n+\tif (inputSize.width < (3 * pattern_size.width) ||\n+\t    inputSize.height < (3 * pattern_size.height)) {\n+\t\tLOG(Debayer, Warning)\n+\t\t\t<< \"Input format size too small: \" << inputSize.toString();\n+\t\treturn {};\n+\t}\n+\n+\treturn SizeRange(Size(pattern_size.width, pattern_size.height),\n+\t\t\t Size((inputSize.width - 2 * pattern_size.width) & ~(pattern_size.width - 1),\n+\t\t\t      (inputSize.height - 2 * pattern_size.height) & ~(pattern_size.height - 1)),\n+\t\t\t pattern_size.width, pattern_size.height);\n+}\n+\n } /* namespace libcamera */\n",
    "prefixes": [
        "RFC",
        "1/2"
    ]
}