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-rw-r--r--nixpkgs/pkgs/development/libraries/x265/default.nix152
-rw-r--r--nixpkgs/pkgs/development/libraries/x265/fix-neon-detection.patch28
2 files changed, 180 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/x265/default.nix b/nixpkgs/pkgs/development/libraries/x265/default.nix
new file mode 100644
index 000000000000..0ce635a80fb7
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/x265/default.nix
@@ -0,0 +1,152 @@
+{ lib
+, stdenv
+, fetchurl
+, fetchpatch
+, cmake
+, nasm
+
+  # NUMA support enabled by default on NUMA platforms:
+, numaSupport ? (stdenv.hostPlatform.isLinux && (stdenv.hostPlatform.isx86 || stdenv.hostPlatform.isAarch64))
+, numactl
+
+  # Multi bit-depth support (8bit+10bit+12bit):
+, multibitdepthSupport ? (stdenv.is64bit && !(stdenv.isAarch64 && stdenv.isLinux))
+
+  # Other options:
+, cliSupport ? true # Build standalone CLI application
+, custatsSupport ? false # Internal profiling of encoder work
+, debugSupport ? false # Run-time sanity checks (debugging)
+, ppaSupport ? false # PPA profiling instrumentation
+, unittestsSupport ? stdenv.isx86_64 # Unit tests - only testing x64 assembly
+, vtuneSupport ? false # Vtune profiling instrumentation
+, werrorSupport ? false # Warnings as errors
+}:
+
+let
+  mkFlag = optSet: flag: if optSet then "-D${flag}=ON" else "-D${flag}=OFF";
+
+  isCross = stdenv.buildPlatform != stdenv.hostPlatform;
+in
+
+stdenv.mkDerivation rec {
+  pname = "x265";
+  version = "3.5";
+
+  outputs = [ "out" "dev" ];
+
+  # Check that x265Version.txt contains the expected version number
+  # whether we fetch a source tarball or a tag from the git repo
+  src = fetchurl {
+    url = "https://bitbucket.org/multicoreware/x265_git/downloads/x265_${version}.tar.gz";
+    hash = "sha256-5wozNcrKy7oLOiDsb+zWeDkyKI68gWOtdLzJYGR3yug=";
+  };
+
+  sourceRoot = "x265_${version}/source";
+
+  patches = [
+    # More aliases for ARM platforms + do not force CLFAGS for ARM :
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/x265/files/arm-r1.patch?id=1d1de341e1404a46b15ae3e84bc400d474cf1a2c";
+      sha256 = "1hgzq5vxkwh0nyikxjfz8gz3jvx2nq3yy12mz3fn13qvzdlb5ilp";
+    })
+    # use proper check to avoid undefined symbols when enabling assembly on ARM :
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/x265/files/neon.patch?id=1d1de341e1404a46b15ae3e84bc400d474cf1a2c";
+      sha256 = "1mmshpbyldrfqxfmdajqal4l647zvlrwdai8pxw99qg4v8gajfii";
+    })
+    # More complete PPC64 matches :
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/x265/files/x265-3.3-ppc64.patch?id=1d1de341e1404a46b15ae3e84bc400d474cf1a2c";
+      sha256 = "1mvw678xfm0vr59n5jilq56qzcgk1gmcip2afyafkqiv21nbms8c";
+    })
+    # Namespace functions for multi-bitdepth builds so that libraries are self-contained (and tests succeeds) :
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/x265/files/test-ns.patch?id=1d1de341e1404a46b15ae3e84bc400d474cf1a2c";
+      sha256 = "0zg3g53l07yh7ar5c241x50y5zp7g8nh8rh63ad4bdpchpc2f52d";
+    })
+    # Fix detection of NEON (and armv6 build) :
+    ./fix-neon-detection.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace cmake/Version.cmake \
+      --replace "unknown" "${version}" \
+      --replace "0.0" "${version}"
+  ''
+  # There is broken and complicated logic when setting X265_LATEST_TAG for
+  # mingwW64 builds. This bypasses the logic by setting it at the end of the
+  # file
+  + lib.optionalString stdenv.hostPlatform.isMinGW ''
+    echo 'set(X265_LATEST_TAG "${version}")' >> ./cmake/Version.cmake
+  '';
+
+  nativeBuildInputs = [ cmake nasm ] ++ lib.optionals (numaSupport) [ numactl ];
+
+  cmakeFlags = [
+    "-Wno-dev"
+    (mkFlag custatsSupport "DETAILED_CU_STATS")
+    (mkFlag debugSupport "CHECKED_BUILD")
+    (mkFlag ppaSupport "ENABLE_PPA")
+    (mkFlag vtuneSupport "ENABLE_VTUNE")
+    (mkFlag werrorSupport "WARNINGS_AS_ERRORS")
+  ];
+
+  cmakeStaticLibFlags = [
+    "-DHIGH_BIT_DEPTH=ON"
+    "-DENABLE_CLI=OFF"
+    "-DENABLE_SHARED=OFF"
+    "-DEXPORT_C_API=OFF"
+  ] ++ lib.optionals stdenv.hostPlatform.isPower [
+    "-DENABLE_ALTIVEC=OFF" # https://bitbucket.org/multicoreware/x265_git/issues/320/fail-to-build-on-power8-le
+  ];
+
+  preConfigure = lib.optionalString multibitdepthSupport ''
+    cmake -B build-10bits $cmakeFlags "''${cmakeFlagsArray[@]}" $cmakeStaticLibFlags
+    cmake -B build-12bits $cmakeFlags "''${cmakeFlagsArray[@]}" $cmakeStaticLibFlags -DMAIN12=ON
+    cmakeFlagsArray+=(
+      -DEXTRA_LIB="x265-10.a;x265-12.a"
+      -DEXTRA_LINK_FLAGS=-L.
+      -DLINKED_10BIT=ON
+      -DLINKED_12BIT=ON
+    )
+  '' + ''
+    cmakeFlagsArray+=(
+      -DGIT_ARCHETYPE=1 # https://bugs.gentoo.org/814116
+      ${mkFlag (!stdenv.hostPlatform.isStatic) "ENABLE_SHARED"}
+      -DHIGH_BIT_DEPTH=OFF
+      -DENABLE_HDR10_PLUS=ON
+      ${mkFlag (isCross && stdenv.hostPlatform.isAarch) "CROSS_COMPILE_ARM"}
+      ${mkFlag cliSupport "ENABLE_CLI"}
+      ${mkFlag unittestsSupport "ENABLE_TESTS"}
+    )
+  '';
+
+  # Builds 10bits and 12bits static libs on the side if multi bit-depth is wanted
+  # (we are in x265_<version>/source/build)
+  preBuild = lib.optionalString multibitdepthSupport ''
+    make -C ../build-10bits -j $NIX_BUILD_CORES
+    make -C ../build-12bits -j $NIX_BUILD_CORES
+    ln -s ../build-10bits/libx265.a ./libx265-10.a
+    ln -s ../build-12bits/libx265.a ./libx265-12.a
+  '';
+
+  doCheck = unittestsSupport;
+  checkPhase = ''
+    runHook preCheck
+    ./test/TestBench
+    runHook postCheck
+  '';
+
+  postInstall = ''
+    rm -f ${placeholder "out"}/lib/*.a
+  '';
+
+  meta = with lib; {
+    description = "Library for encoding H.265/HEVC video streams";
+    homepage = "https://www.x265.org/";
+    changelog = "https://x265.readthedocs.io/en/master/releasenotes.html#version-${lib.strings.replaceStrings ["."] ["-"] version}";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ codyopel ];
+    platforms = platforms.all;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/x265/fix-neon-detection.patch b/nixpkgs/pkgs/development/libraries/x265/fix-neon-detection.patch
new file mode 100644
index 000000000000..dbb826e54668
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/x265/fix-neon-detection.patch
@@ -0,0 +1,28 @@
+commit 72489cd0a1c229258abe4f20e4fdfd414dfa88da
+Author: rnhmjoj <rnhmjoj@inventati.org>
+Date:   Sun Oct 2 00:15:24 2022 +0200
+
+    Fix NEON detection
+
+diff --git a/cmake/FindNeon.cmake b/cmake/FindNeon.cmake
+index 0062449..9c436d9 100644
+--- a/cmake/FindNeon.cmake
++++ b/cmake/FindNeon.cmake
+@@ -1,10 +1,11 @@
+ include(FindPackageHandleStandardArgs)
+ 
+ # Check the version of neon supported by the ARM CPU
+-execute_process(COMMAND cat /proc/cpuinfo | grep Features | grep neon
+-                OUTPUT_VARIABLE neon_version
+-                ERROR_QUIET
+-                OUTPUT_STRIP_TRAILING_WHITESPACE)
+-if(neon_version)
+-    set(CPU_HAS_NEON 1)
++message(STATUS "Detecting NEON support")
++execute_process(COMMAND sed -n "/Features.* neon/q 1" /proc/cpuinfo
++                RESULT_VARIABLE CPU_HAS_NEON)
++if(CPU_HAS_NEON)
++    message(STATUS "Detecting NEON support - supported")
++else()
++    message(STATUS "Detecting NEON support - not supported" )
+ endif()