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{ "id": 23599, "url": "https://patchwork.libcamera.org/api/1.1/patches/23599/?format=api", "web_url": "https://patchwork.libcamera.org/patch/23599/", "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": "<20250619082027.4058507-1-chenghaoyang@google.com>", "date": "2025-06-19T08:20:17", "name": "[v2] EncoderLibJpeg: Migrate const global pixelInfo to static", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c597fa0e4b5cd3c53736d76f9623269c6cc191eb", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/1.1/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/23599/mbox/", "series": [ { "id": 5230, "url": "https://patchwork.libcamera.org/api/1.1/series/5230/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5230", "date": "2025-06-19T08:20:17", "name": "[v2] EncoderLibJpeg: Migrate const global pixelInfo to static", "version": 2, "mbox": "https://patchwork.libcamera.org/series/5230/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/23599/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/23599/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "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 D7B82BDE6B\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 19 Jun 2025 08:20:37 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 2D9E668DCD;\n\tThu, 19 Jun 2025 10:20:36 +0200 (CEST)", "from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com\n\t[IPv6:2607:f8b0:4864:20::102b])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 0379761538\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 19 Jun 2025 10:20:33 +0200 (CEST)", "by mail-pj1-x102b.google.com with SMTP id\n\t98e67ed59e1d1-311a6236effso301126a91.2\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 19 Jun 2025 01:20:33 -0700 (PDT)", "from chenghaoyang-low.c.googlers.com.com\n\t(208.158.221.35.bc.googleusercontent.com. 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\n\tThu, 19 Jun 2025 01:20:32 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "X-Google-Original-From": "Harvey Yang <chenghaoyang@google.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>", "Subject": "[PATCH v2] EncoderLibJpeg: Migrate const global pixelInfo to static", "Date": "Thu, 19 Jun 2025 08:20:17 +0000", "Message-ID": "<20250619082027.4058507-1-chenghaoyang@google.com>", "X-Mailer": "git-send-email 2.50.0.rc2.701.gf1e915cc24-goog", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "From: Harvey Yang <chenghaoyang@chromium.org>\n\nPreviously, const global `pixelInfo` in `encoder_libjpeg.cpp` is\ninitialized before const global `pixelFormatInfo` in `formats.cpp`,\neven if `formats.cpp` is wrapped in the base libcamera shared library,\nand the android adapter (which contains `encoder_libjpeg.cpp`)\ndepends on the base libcamera shared library.\n\nThe reason should be that C++ initialization order doesn't follow the\nlinking process.\n\nThis patch migrates const global pixelInfo to static to avoid the race\ncondition.\n\nSigned-off-by: Harvey Yang <chenghaoyang@chromium.org>\n---\n src/android/jpeg/encoder_libjpeg.cpp | 28 ++++++++++++++--------------\n 1 file changed, 14 insertions(+), 14 deletions(-)", "diff": "diff --git a/src/android/jpeg/encoder_libjpeg.cpp b/src/android/jpeg/encoder_libjpeg.cpp\nindex cb242b5ec6a8..3ba5103d5ad5 100644\n--- a/src/android/jpeg/encoder_libjpeg.cpp\n+++ b/src/android/jpeg/encoder_libjpeg.cpp\n@@ -38,26 +38,26 @@ struct JPEGPixelFormatInfo {\n \tbool nvSwap;\n };\n \n-const std::map<PixelFormat, JPEGPixelFormatInfo> pixelInfo{\n-\t{ formats::R8, { JCS_GRAYSCALE, PixelFormatInfo::info(formats::R8), false } },\n-\n-\t{ formats::RGB888, { JCS_EXT_BGR, PixelFormatInfo::info(formats::RGB888), false } },\n-\t{ formats::BGR888, { JCS_EXT_RGB, PixelFormatInfo::info(formats::BGR888), false } },\n-\n-\t{ formats::NV12, { JCS_YCbCr, PixelFormatInfo::info(formats::NV12), false } },\n-\t{ formats::NV21, { JCS_YCbCr, PixelFormatInfo::info(formats::NV21), true } },\n-\t{ formats::NV16, { JCS_YCbCr, PixelFormatInfo::info(formats::NV16), false } },\n-\t{ formats::NV61, { JCS_YCbCr, PixelFormatInfo::info(formats::NV61), true } },\n-\t{ formats::NV24, { JCS_YCbCr, PixelFormatInfo::info(formats::NV24), false } },\n-\t{ formats::NV42, { JCS_YCbCr, PixelFormatInfo::info(formats::NV42), true } },\n-};\n-\n const struct JPEGPixelFormatInfo &findPixelInfo(const PixelFormat &format)\n {\n \tstatic const struct JPEGPixelFormatInfo invalidPixelFormat {\n \t\tJCS_UNKNOWN, PixelFormatInfo(), false\n \t};\n \n+\tstatic const std::map<PixelFormat, JPEGPixelFormatInfo> pixelInfo{\n+\t\t{ formats::R8, { JCS_GRAYSCALE, PixelFormatInfo::info(formats::R8), false } },\n+\n+\t\t{ formats::RGB888, { JCS_EXT_BGR, PixelFormatInfo::info(formats::RGB888), false } },\n+\t\t{ formats::BGR888, { JCS_EXT_RGB, PixelFormatInfo::info(formats::BGR888), false } },\n+\n+\t\t{ formats::NV12, { JCS_YCbCr, PixelFormatInfo::info(formats::NV12), false } },\n+\t\t{ formats::NV21, { JCS_YCbCr, PixelFormatInfo::info(formats::NV21), true } },\n+\t\t{ formats::NV16, { JCS_YCbCr, PixelFormatInfo::info(formats::NV16), false } },\n+\t\t{ formats::NV61, { JCS_YCbCr, PixelFormatInfo::info(formats::NV61), true } },\n+\t\t{ formats::NV24, { JCS_YCbCr, PixelFormatInfo::info(formats::NV24), false } },\n+\t\t{ formats::NV42, { JCS_YCbCr, PixelFormatInfo::info(formats::NV42), true } },\n+\t};\n+\n \tconst auto iter = pixelInfo.find(format);\n \tif (iter == pixelInfo.end()) {\n \t\tLOG(JPEG, Error) << \"Unsupported pixel format for JPEG encoder: \"\n", "prefixes": [ "v2" ] }