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C2PA Presence detection and validation #352

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7c925d8
Update the About section
JeromeMartinez May 14, 2026
b407aa8
Import C2PA API and Json parsing helper
MediaAreaCI Jul 17, 2026
cdeb1f5
C2PA Presence detection, validation and display
g-maxime Jul 17, 2026
371d16d
Add dynamic loading mode for libc2pa
g-maxime Jul 17, 2026
1b7e2a9
Package c2pa library into macOS CLI pkg
g-maxime Jul 20, 2026
9228fbc
C2PA signing support
g-maxime Aug 1, 2026
21b3e32
Add c2pa-rs as submodule
g-maxime Aug 3, 2026
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3 changes: 3 additions & 0 deletions .gitmodules
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@@ -0,0 +1,3 @@
[submodule "Source/ThirdParty/c2pa-rs"]
path = Source/ThirdParty/c2pa-rs
url = https://github.com/contentauth/c2pa-rs.git
5 changes: 5 additions & 0 deletions Project/GNU/CLI/Makefile.am
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Expand Up @@ -30,6 +30,7 @@ bwfmetaedit_SOURCES = \
../../../Source/Riff/Riff_Chunks_WAVE_adtl_note.cpp \
../../../Source/Riff/Riff_Chunks_WAVE_adtl_ltxt.cpp \
../../../Source/Riff/Riff_Chunks_WAVE_CSET.cpp \
../../../Source/Riff/Riff_Chunks_WAVE_C2PA.cpp \
../../../Source/Riff/Riff_Handler.cpp \
../../../Source/TinyXml2/tinyxml2.cpp \
../../../Source/ZenLib/Conf.cpp \
Expand All @@ -50,6 +51,10 @@ bwfmetaedit_SOURCES = \
../../../Source/ZenLib/ZtringListList.cpp \
../../../Source/ZenLib/ZtringListListF.cpp

if ENABLE_C2PA
bwfmetaedit_SOURCES += ../../../Source/Riff/Riff_C2PA_Helpers.cpp
endif

#bwfmetaedit_LDFLAGS = -no-undefined -version-info 0:0:0
AM_CXXFLAGS = -std=c++11

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23 changes: 21 additions & 2 deletions Project/GNU/CLI/configure.ac
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Expand Up @@ -33,15 +33,18 @@ dnl #########################################################################
dnl -------------------------------------------------------------------------
dnl Arguments - Enable
dnl
AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [Enable full debug]), , enable_debug=no)
AC_ARG_ENABLE(gprof, AC_HELP_STRING([--enable-gprof], [Enable gprof log]), , enable_gprof=no)
AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [Enable full debug]), , enable_debug=no)
AC_ARG_ENABLE(gprof, AC_HELP_STRING([--enable-gprof], [Enable gprof log]), , enable_gprof=no)
AC_ARG_ENABLE(universal_binary, AC_HELP_STRING([--enable-universal_binary], [Create Mac x84_64/arm64 Universal binary]), , enable_universal_binary=no)
AC_ARG_ENABLE(unicode, AS_HELP_STRING([--disable-unicode], [Disable unicode]), , enable_unicode=yes)
AC_ARG_ENABLE(arch-ppc, AC_HELP_STRING([--with-arch-ppc], [Create Mac PPC Universal binary]), , enable_arch_ppc=no)
AC_ARG_ENABLE(arch-i386, AC_HELP_STRING([--with-arch-i386], [Create Mac i386 Universal binary]), , enable_arch_i386=no)
AC_ARG_ENABLE(arch-x86_64, AC_HELP_STRING([--enable-arch-x86_64], [Create Mac x86_64 architecture]), , enable_arch_x86_64=no)
AC_ARG_ENABLE(arch-arm64, AC_HELP_STRING([--enable-arch-arm64], [Create Mac arm64 architecture]), , enable_arch_arm64=no)
AC_ARG_ENABLE(large_files, AC_HELP_STRING([--disable-large_files], [Disable large files support]), , enable_large_files=yes)
AC_ARG_ENABLE(c2pa, AC_HELP_STRING([--enable-c2pa], [Enable C2PA validation and signing]), , enable_c2pa=no)

AM_CONDITIONAL([ENABLE_C2PA], [test "$enable_c2pa" != "no"])

dnl -------------------------------------------------------------------------
dnl Arguments - With
Expand Down Expand Up @@ -155,6 +158,22 @@ if test "x$with_macosx_version_min" != xno ; then
LDFLAGS="-mmacosx-version-min=$with_macosx_version_min $LDFLAGS"
fi

dnl #########################################################################
dnl ### Libraries
dnl #########################################################################

dnl -------------------------------------------------------------------------
dnl c2pa
dnl
if test "$enable_c2pa" = "yes"; then
CXXFLAGS="-DENABLE_C2PA $CXXFLAGS"
if test "x$host_os" = "xdarwin"; then
LIBS="$srcdir/../../../Source/ThirdParty/c2pa-rs/target/release/libc2pa_c.dylib $LIBS"
else
LIBS="$srcdir/../../../Source/ThirdParty/c2pa-rs/target/release/libc2pa_c.so $LIBS"
fi
fi

dnl #########################################################################
dnl ### Output
dnl #########################################################################
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8 changes: 5 additions & 3 deletions Project/GNU/GUI/bwfmetaedit-gui.metainfo.xml
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@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<!-- Copyright 2016-2019 MediaArea.net <info@mediaarea.net> -->
<!-- Copyright 2016-2026 MediaArea.net <info@mediaarea.net> -->
<component type="desktop">
<id type="desktop">bwfmetaedit-gui.desktop</id>
<launchable type="desktop-id">bwfmetaedit-gui.desktop</launchable>
Expand All @@ -8,8 +8,10 @@
<name>BWF MetaEdit</name>
<summary>Embed, validate, and export BWF files metadata</summary>
<description>
<p>BWF MetaEdit was developed by the Federal Agencies Digitization Guidelines Initiative (FADGI) supported by AudioVisual Preservation Solutions.</p>
<p>This tool permits embedding, editing, and exporting of metadata in Broadcast WAVE Format (BWF) files. This tool can also enforce metadata guidelines developed by the Federal Agencies Audio-Visual Working Group, as well as recommendations and specifications from the European Broadcasting Union (EBU), Microsoft, and IBM.</p>
<strong>BWF MetaEdit</strong> is a tool that supports embedding, validating, and exporting of metadata in Broadcast WAVE Format (BWF) files. It supports the <a href=\"http://www.digitizationguidelines.gov/guidelines/digitize-embedding.html\" target=\"_blank\">FADGI Broadcast WAVE Metadata Embedding Guidelines</a>.<br>
<br>
Initially funded by the <a href=\"https://www.loc.gov/\" target=\"_blank\">Library of Congress</a> and <a href=\"http://www.digitizationguidelines.gov/\" target=\"_blank\">FADGI (Federal Agencies Digital Guidelines Initiative)</a>; previously developed by MediaArea and led by <a href=\"http://avpreserve.com/\" target=\"_blank\">AVPreserve</a>; currently developed and led by MediaArea.<br>
MediaArea provides support and binaries for all platforms.
</description>
<keywords>
<keyword>metadata</keyword>
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5 changes: 5 additions & 0 deletions Project/MSVC2022/CLI/BWF_MetaEdit_CLI.vcxproj
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Expand Up @@ -207,6 +207,8 @@
<ClCompile Include="..\..\..\Source\Riff\Riff_Chunks_WAVE_adtl_note.cpp" />
<ClCompile Include="..\..\..\Source\Riff\Riff_Chunks_WAVE_adtl_ltxt.cpp" />
<ClCompile Include="..\..\..\Source\Riff\Riff_Chunks_WAVE_CSET.cpp" />
<ClCompile Include="..\..\..\Source\Riff\Riff_Chunks_WAVE_C2PA.cpp" />
<ClCompile Include="..\..\..\Source\Riff\Riff_C2PA_Helpers.cpp" />
<ClCompile Include="..\..\..\Source\Riff\Riff_Handler.cpp" />
<ClCompile Include="..\..\..\Source\ZenLib\Conf.cpp" />
<ClCompile Include="..\..\..\Source\ZenLib\CriticalSection.cpp" />
Expand Down Expand Up @@ -238,6 +240,9 @@
<ClInclude Include="..\..\..\Source\Riff\Riff_Base.h" />
<ClInclude Include="..\..\..\Source\Riff\Riff_Chunks.h" />
<ClInclude Include="..\..\..\Source\Riff\Riff_Handler.h" />
<ClInclude Include="..\..\..\Source\Riff\Riff_C2PA_Helpers.h" />
<ClInclude Include="..\..\..\Source\ThirdParty\json\json.h" />
<ClInclude Include="..\..\..\Source\ThirdParty\c2pa\c2pa.h" />
<ClInclude Include="..\..\..\Source\ZenLib\BitStream.h" />
<ClInclude Include="..\..\..\Source\ZenLib\BitStream_Fast.h" />
<ClInclude Include="..\..\..\Source\ZenLib\BitStream_LE.h" />
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4 changes: 4 additions & 0 deletions Project/Mac/mkdmg.sh
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Expand Up @@ -65,6 +65,10 @@ if [ "$KIND" = "CLI" ]; then
cp "../GNU/CLI/${APPNAME_lower}" "${FILES}-Root/usr/local/bin"
codesign -f --deep --options=runtime -s "Developer ID Application: ${SIGNATURE}" --verbose "${FILES}-Root/usr/local/bin/${APPNAME_lower}"

mkdir -p "${FILES}-Root/usr/local/lib"
cp "../../Source/ThirdParty/c2pa/c2pa-rs/target/release/libc2pa_c.dylib" "${FILES}-Root/usr/local/lib"
codesign -f --deep --options=runtime -s "Developer ID Application: ${SIGNATURE}" --verbose "${FILES}-Root/usr/local/lib/libc2pa_c.dylib"

pkgbuild --root "${FILES}-Root" --identifier "net.mediaarea.${APPNAME_lower}.mac-${KIND_lower}" --sign "Developer ID Installer: ${SIGNATURE}" --version "${VERSION}" "${FILES}/${APPNAME_lower}.pkg"
codesign -f --deep --options=runtime -s "Developer ID Application: ${SIGNATURE}" --verbose "${FILES}/${APPNAME_lower}.pkg"

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22 changes: 22 additions & 0 deletions Project/QtCreator/bwfmetaedit-gui.pro
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Expand Up @@ -146,6 +146,7 @@ SOURCES = \
../../Source/Riff/Riff_Chunks_WAVE_adtl_note.cpp \
../../Source/Riff/Riff_Chunks_WAVE_adtl_ltxt.cpp \
../../Source/Riff/Riff_Chunks_WAVE_CSET.cpp \
../../Source/Riff/Riff_Chunks_WAVE_C2PA.cpp \
../../Source/Riff/Riff_Handler.cpp \
../../Source/TinyXml2/tinyxml2.cpp \
../../Source/ZenLib/Conf.cpp \
Expand All @@ -167,6 +168,27 @@ SOURCES = \
../../Source/ZenLib/ZtringListList.cpp \
../../Source/ZenLib/ZtringListListF.cpp

contains(ENABLE_C2PA, yes|1) {
SOURCES += ../../Source/Riff/Riff_C2PA_Helpers.cpp \
../../Source/GUI/Qt/GUI_Main_xxxx_C2PADialog.cpp

HEADERS += ../../Source/ThirdParty/c2pa-rs/target/release/c2pa.h \
../../Source/ThirdParty/json/json.h \
../../Source/Riff/Riff_C2PA_Helpers.h \
../../Source/GUI/Qt/GUI_Main_xxxx_C2PADialog.h

DEFINES += ENABLE_C2PA

win32 {
LIBS += ../../Source/ThirdParty/c2pa-rs/target/release/c2pa_c.dll.lib
}
else:macx {
LIBS += ../../Source/ThirdParty/c2pa-rs/target/release/libc2pa_c.dylib
}
else {
LIBS += ../../Source/ThirdParty/c2pa-rs/target/release/libc2pa_c.so
}
}

macx {
HEADERS += ../../Source/Common/Mac_Helpers.h
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21 changes: 20 additions & 1 deletion Source/CLI/CLI_Help.cpp
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Expand Up @@ -38,6 +38,7 @@ std::string Help()
ToDisplay<<" Reject file if:"<<std::endl;
ToDisplay<<"--reject-riff2rf64 Transformation to RF64 is requested"<<std::endl;
ToDisplay<<"--reject-overwrite Prevent overwrite of existing data(only add)"<<std::endl;
ToDisplay<<"--reject-c2pa Prevent invalidation of the C2PA signature if present"<<std::endl;
ToDisplay<<""<<std::endl;
ToDisplay<<" Accept file if:"<<std::endl;
ToDisplay<<"--accept-nopadding Padding byte is missing"<<std::endl;
Expand Down Expand Up @@ -91,7 +92,6 @@ std::string Help()
ToDisplay<<"--out-xml= specified file ('-' for current display)"<<std::endl;
ToDisplay<<""<<std::endl;
ToDisplay<<"*******************************************************************************"<<std::endl;
ToDisplay<<"*******************************************************************************"<<std::endl;
ToDisplay<<""<<std::endl;
ToDisplay<<" Extract Technical Metadata to:"<<std::endl;
ToDisplay<<"--out-tech Display technical data (disable others displays)"<<std::endl;
Expand Down Expand Up @@ -173,7 +173,26 @@ std::string Help()
ToDisplay<<"--MD5-Verify Verify MD5 for audio data"<<std::endl;
ToDisplay<<"--MD5-Embed Embed MD5 for audio data"<<std::endl;
ToDisplay<<"--MD5-Embed-Overwrite Embed MD5 for audio data - Allow overwriting"<<std::endl;
ToDisplay<<""<<std::endl;
ToDisplay<<"*******************************************************************************"<<std::endl;
#if defined(ENABLE_C2PA)
ToDisplay<<""<<std::endl;
ToDisplay<<"--out-C2PA Display C2PA crJSON manifest and validation status (disable others displays, allows only one input file)"<<std::endl;
ToDisplay<<"--out-C2PA= Save C2PA crJSON manifest in specified file ('-' for current display, allows only one input file)"<<std::endl;
ToDisplay<<"--out-C2PA-json Save C2PA crJSON manifest in filename.C2PA.json"<<std::endl;
ToDisplay<<"--C2PA-Verify Verify C2PA chunk validity and signature"<<std::endl;
ToDisplay<<"--C2PA-Sign-Manifest= Sign the file with C2PA, applied after all other modifications are written"<<std::endl;
ToDisplay<<" Argument is the path to a JSON C2PA manifest definition (claim_generator_info,"<<std::endl;
ToDisplay<<" title, assertions...); claim_generator_info, title and format default to"<<std::endl;
ToDisplay<<" BWFMetaEdit/<version>, the file name and 'audio/x-wav' if not provided"<<std::endl;
ToDisplay<<" Requires --C2PA-Sign-Certificate= and --C2PA-Sign-Key="<<std::endl;
ToDisplay<<"--C2PA-Sign-Certificate= Path to the PEM signing certificate (chain)"<<std::endl;
ToDisplay<<"--C2PA-Sign-Key= Path to the PEM private key"<<std::endl;
ToDisplay<<"--C2PA-Sign-Algorithm= Signing algorithm (e.g. es256)"<<std::endl;
ToDisplay<<"--C2PA-Sign-TA-URL= Optional RFC3161 timestamp authority URL"<<std::endl;
ToDisplay<<""<<std::endl;
ToDisplay<<"*******************************************************************************"<<std::endl;
#endif // defined(ENABLE_C2PA)
ToDisplay<<""<<std::endl;
ToDisplay<<"--remove-chunks= Remove specified items from the WAVE chunk tree (comma separated list)"<<std::endl;
ToDisplay<<" Chunk identifier must be 4 characters long and is case sensitive"<<std::endl;
Expand Down
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