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{
    "id": 20219,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/20219/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/20219/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/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": "<20240606101512.375178-6-david.plowman@raspberrypi.com>",
    "date": "2024-06-06T10:15:11",
    "name": "[5/6] utils: raspberrypi: ctt: Add option to convert between vc4/pisp targets",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "c5865d81247687894ae91ee35e112f04795b37c8",
    "submitter": {
        "id": 42,
        "url": "https://patchwork.libcamera.org/api/1.1/people/42/?format=api",
        "name": "David Plowman",
        "email": "david.plowman@raspberrypi.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/20219/mbox/",
    "series": [
        {
            "id": 4367,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4367/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4367",
            "date": "2024-06-06T10:15:06",
            "name": "Raspberry Pi Camera Tuning Tool updates",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4367/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/20219/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/20219/checks/",
    "tags": {},
    "headers": {
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        "From": "David Plowman <david.plowman@raspberrypi.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Naushir Patuck <naush@raspberrypi.com>",
        "Subject": "[PATCH 5/6] utils: raspberrypi: ctt: Add option to convert between\n\tvc4/pisp targets",
        "Date": "Thu,  6 Jun 2024 11:15:11 +0100",
        "Message-Id": "<20240606101512.375178-6-david.plowman@raspberrypi.com>",
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        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "From: Naushir Patuck <naush@raspberrypi.com>\n\nThis change adds functionality to the convert_tuning.py script to\nconvert between vc4 and pisp target tuning files. The conversion is\ndone on a best effort basis, and should provide functional tuning files.\nHowever, a full tuning for the target platform is always preferred.\n\nSigned-off-by: Naushir Patuck <naush@raspberrypi.com>\n---\n utils/raspberrypi/ctt/convert_tuning.py | 98 ++++++++++++++++++++++---\n 1 file changed, 86 insertions(+), 12 deletions(-)",
    "diff": "diff --git a/utils/raspberrypi/ctt/convert_tuning.py b/utils/raspberrypi/ctt/convert_tuning.py\nindex f4504d45..83cf69d4 100755\n--- a/utils/raspberrypi/ctt/convert_tuning.py\n+++ b/utils/raspberrypi/ctt/convert_tuning.py\n@@ -8,30 +8,104 @@\n \n import argparse\n import json\n+import numpy as np\n import sys\n \n from ctt_pretty_print_json import pretty_print\n+from ctt_pisp import grid_size as grid_size_pisp\n+from ctt_pisp import json_template as json_template_pisp\n+from ctt_vc4 import grid_size as grid_size_vc4\n+from ctt_vc4 import json_template as json_template_vc4\n \n \n-def convert_v2(in_json: dict) -> str:\n+def interp_2d(in_ls, src_w, src_h, dst_w, dst_h):\n \n-    if 'version' in in_json.keys() and in_json['version'] != 1.0:\n-        print(f'The JSON config reports version {in_json[\"version\"]} that is incompatible with this tool.')\n-        sys.exit(-1)\n+    out_ls = np.zeros((dst_h, dst_w))\n+    for i in range(src_h):\n+        out_ls[i] = np.interp(np.linspace(0, dst_w - 1, dst_w),\n+                              np.linspace(0, dst_w - 1, src_w),\n+                              in_ls[i])\n+    for i in range(dst_w):\n+        out_ls[:,i] = np.interp(np.linspace(0, dst_h - 1, dst_h),\n+                                np.linspace(0, dst_h - 1, src_h),\n+                                out_ls[:src_h, i])\n+    return out_ls\n \n-    converted = {\n-        'version': 2.0,\n-        'target': 'bcm2835',\n-        'algorithms': [{algo: config} for algo, config in in_json.items()]\n-    }\n \n-    return pretty_print(converted)\n+def convert_target(in_json: dict, target: str):\n+\n+    src_w, src_h = grid_size_pisp if target == 'vc4' else grid_size_vc4\n+    dst_w, dst_h = grid_size_vc4 if target == 'vc4' else grid_size_pisp\n+    json_template = json_template_vc4 if target == 'vc4' else json_template_pisp\n+\n+    # ALSC grid sizes\n+    alsc = next(algo for algo in in_json['algorithms'] if 'rpi.alsc' in algo)['rpi.alsc']\n+    for colour in ['calibrations_Cr', 'calibrations_Cb']:\n+        if colour not in alsc:\n+            continue\n+        for temperature in alsc[colour]:\n+            in_ls = np.reshape(temperature['table'], (src_h, src_w))\n+            out_ls = interp_2d(in_ls, src_w, src_h, dst_w, dst_h)\n+            temperature['table'] = np.round(out_ls.flatten(), 3).tolist()\n+\n+    if 'luminance_lut' in alsc:\n+        in_ls = np.reshape(alsc['luminance_lut'], (src_h, src_w))\n+        out_ls = interp_2d(in_ls, src_w, src_h, dst_w, dst_h)\n+        alsc['luminance_lut'] = np.round(out_ls.flatten(), 3).tolist()\n+\n+    # Denoise blocks\n+    for i, algo in enumerate(in_json['algorithms']):\n+        if list(algo.keys())[0] == 'rpi.sdn':\n+            in_json['algorithms'][i] = {'rpi.denoise': json_template['rpi.sdn'] if target == 'vc4' else json_template['rpi.denoise']}\n+            break\n+\n+    # AGC mode weights\n+    agc = next(algo for algo in in_json['algorithms'] if 'rpi.agc' in algo)['rpi.agc']\n+    if 'channels' in agc:\n+        for i, channel in enumerate(agc['channels']):\n+            target_agc_metering = json_template['rpi.agc']['channels'][i]['metering_modes']\n+            for mode, v in channel['metering_modes'].items():\n+                v['weights'] = target_agc_metering[mode]['weights']\n+    else:\n+        for mode, v in agc[\"metering_modes\"].items():\n+            target_agc_metering = json_template['rpi.agc']['channels'][0]['metering_modes']\n+            v['weights'] = target_agc_metering[mode]['weights']\n+\n+    # HDR\n+    if target == 'pisp':\n+        for i, algo in enumerate(in_json['algorithms']):\n+            if list(algo.keys())[0] == 'rpi.hdr':\n+                in_json['algorithms'][i] = {'rpi.hdr': json_template['rpi.hdr']}\n+\n+    return in_json\n+\n+\n+def convert_v2(in_json: dict, target: str) -> str:\n+\n+    if 'version' in in_json.keys() and in_json['version'] == 1.0:\n+        converted = {\n+            'version': 2.0,\n+            'target': target,\n+            'algorithms': [{algo: config} for algo, config in in_json.items()]\n+        }\n+    else:\n+        converted = in_json\n+\n+    # Convert between vc4 <-> pisp targets. This is a best effort thing.\n+    if converted['target'] != target:\n+        converted = convert_target(converted, target)\n+        converted['target'] = target\n+\n+    grid_size = grid_size_vc4[0] if target == 'vc4' else grid_size_pisp[0]\n+    return pretty_print(converted, custom_elems={'table': grid_size, 'luminance_lut': grid_size})\n \n \n if __name__ == \"__main__\":\n     parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter, description=\n-                    'Convert the format of the Raspberry Pi camera tuning file from v1.0 to v2.0.\\n')\n+        'Convert the format of the Raspberry Pi camera tuning file from v1.0 to v2.0 and/or the vc4 <-> pisp targets.\\n')\n     parser.add_argument('input', type=str, help='Input tuning file.')\n+    parser.add_argument('-t', '--target', type=str, help='Target platform.',\n+                        choices=['pisp', 'vc4'], default='vc4')\n     parser.add_argument('output', type=str, nargs='?',\n                         help='Output converted tuning file. If not provided, the input file will be updated in-place.',\n                         default=None)\n@@ -40,7 +114,7 @@ if __name__ == \"__main__\":\n     with open(args.input, 'r') as f:\n         in_json = json.load(f)\n \n-    out_json = convert_v2(in_json)\n+    out_json = convert_v2(in_json, args.target)\n \n     with open(args.output if args.output is not None else args.input, 'w') as f:\n         f.write(out_json)\n",
    "prefixes": [
        "5/6"
    ]
}