ba52ae5048
Following legacy packing conventions, `isArm` was defined just for
32-bit ARM instruction set. This is confusing to non packagers though,
because Aarch64 is an ARM instruction set.
The official ARM overview for ARMv8[1] is surprisingly not confusing,
given the overall state of affairs for ARM naming conventions, and
offers us a solution. It divides the nomenclature into three levels:
```
ISA: ARMv8 {-A, -R, -M}
/ \
Mode: Aarch32 Aarch64
| / \
Encoding: A64 A32 T32
```
At the top is the overall v8 instruction set archicture. Second are the
two modes, defined by bitwidth but differing in other semantics too, and
buttom are the encodings, (hopefully?) isomorphic if they encode the
same mode.
The 32 bit encodings are mostly backwards compatible with previous
non-Thumb and Thumb encodings, and if so we can pun the mode names to
instead mean "sets of compatable or isomorphic encodings", and then
voilà we have nice names for 32-bit and 64-bit arm instruction sets
which do not use the word ARM so as to not confused either laymen or
experienced ARM packages.
[1]: https://developer.arm.com/products/architecture/a-profile
189 lines
8.8 KiB
Nix
189 lines
8.8 KiB
Nix
{ stdenv, fetchgit, perl, yasm
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, hostPlatform
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, vp8DecoderSupport ? true # VP8 decoder
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, vp8EncoderSupport ? true # VP8 encoder
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, vp9DecoderSupport ? true # VP9 decoder
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, vp9EncoderSupport ? true # VP9 encoder
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, extraWarningsSupport ? false # emit non-fatal warnings
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, werrorSupport ? false # treat warnings as errors (not available with all compilers)
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, debugSupport ? false # debug mode
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, gprofSupport ? false # gprof profiling instrumentation
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, gcovSupport ? false # gcov coverage instrumentation
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, sizeLimitSupport ? true # limit max size to allow in the decoder
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, optimizationsSupport ? true # compiler optimization flags
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, runtimeCpuDetectSupport ? true # detect cpu capabilities at runtime
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, thumbSupport ? false # build arm assembly in thumb mode
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, examplesSupport ? true # build examples (vpxdec & vpxenc are part of examples)
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, fastUnalignedSupport ? true # use unaligned accesses if supported by hardware
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, debugLibsSupport ? false # include debug version of each library
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, postprocSupport ? true # postprocessing
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, multithreadSupport ? true # multithreaded decoding & encoding
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, internalStatsSupport ? false # output of encoder internal stats for debug, if supported (encoders)
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, memTrackerSupport ? false # track memory usage
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, spatialResamplingSupport ? true # spatial sampling (scaling)
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, realtimeOnlySupport ? false # build for real-time encoding
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, ontheflyBitpackingSupport ? false # on-the-fly bitpacking in real-time encoding
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, errorConcealmentSupport ? false # decoder conceals losses
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, smallSupport ? false # favor smaller binary over speed
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, postprocVisualizerSupport ? false # macro block/block level visualizers
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, unitTestsSupport ? false, curl ? null, coreutils ? null # unit tests
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, webmIOSupport ? true # input from and output to webm container
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, libyuvSupport ? true # libyuv
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, decodePerfTestsSupport ? false # build decoder perf tests with unit tests
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, encodePerfTestsSupport ? false # build encoder perf tests with unit tests
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, multiResEncodingSupport ? false # multiple-resolution encoding
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, temporalDenoisingSupport ? true # use temporal denoising instead of spatial denoising
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, coefficientRangeCheckingSupport ? false # decoder checks if intermediate transform coefficients are in valid range
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, vp9HighbitdepthSupport ? true # 10/12 bit color support in VP9
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, experimentalSupport ? false # experimental features
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# Experimental features
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, experimentalSpatialSvcSupport ? false # Spatial scalable video coding
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, experimentalFpMbStatsSupport ? false
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, experimentalEmulateHardwareSupport ? false
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}:
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let
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inherit (stdenv) isi686 isx86_64 isAarch32 is64bit isMips isDarwin isCygwin;
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inherit (stdenv.lib) enableFeature optional optionals;
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in
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assert isi686 || isx86_64 || isAarch32 || isMips; # Requires ARM with floating point support
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assert vp8DecoderSupport || vp8EncoderSupport || vp9DecoderSupport || vp9EncoderSupport;
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assert internalStatsSupport && (vp9DecoderSupport || vp9EncoderSupport) -> postprocSupport;
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/* If spatialResamplingSupport not enabled, build will fail with undeclared variable errors.
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Variables called in vpx_scale/generic/vpx_scale.c are declared by vpx_scale/vpx_scale_rtcd.pl,
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but is only executed if spatialResamplingSupport is enabled */
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assert spatialResamplingSupport;
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assert postprocVisualizerSupport -> postprocSupport;
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assert unitTestsSupport -> curl != null && coreutils != null;
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assert vp9HighbitdepthSupport -> (vp9DecoderSupport || vp9EncoderSupport);
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assert isCygwin -> unitTestsSupport && webmIOSupport && libyuvSupport;
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stdenv.mkDerivation rec {
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name = "libvpx-git-${version}";
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version = "2015-2-12";
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src = fetchgit {
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url = "https://chromium.googlesource.com/webm/libvpx";
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/* DO NOT under any circumstance ever just bump the git commit without
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confirming changes have not been made to the configure system */
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rev = "f4c29ae9ea16c502c980a81ca9683327d5051929";
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sha256 = "1w17vpcy44wlpr2icbwhcf3mrinybwy0bhif30p707hbxfxrj474";
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};
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patchPhase = ''patchShebangs .'';
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outputs = [ "bin" "dev" "out" ];
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setOutputFlags = false;
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configureFlags = [
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(enableFeature (vp8EncoderSupport || vp8DecoderSupport) "vp8")
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(enableFeature vp8EncoderSupport "vp8-encoder")
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(enableFeature vp8DecoderSupport "vp8-decoder")
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(enableFeature (vp9EncoderSupport || vp9DecoderSupport) "vp9")
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(enableFeature vp9EncoderSupport "vp9-encoder")
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(enableFeature vp9DecoderSupport "vp9-decoder")
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(enableFeature extraWarningsSupport "extra-warnings")
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(enableFeature werrorSupport "werror")
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"--disable-install-docs"
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(enableFeature examplesSupport "install-bins")
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"--enable-install-libs"
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"--disable-install-srcs"
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(enableFeature debugSupport "debug")
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(enableFeature gprofSupport "gprof")
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(enableFeature gcovSupport "gcov")
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# Required to build shared libraries
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(enableFeature (!isCygwin) "pic")
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(enableFeature (isi686 || isx86_64) "use-x86inc")
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(enableFeature optimizationsSupport "optimizations")
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(enableFeature runtimeCpuDetectSupport "runtime-cpu-detect")
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(enableFeature thumbSupport "thumb")
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"--enable-libs"
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(enableFeature examplesSupport "examples")
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"--disable-docs"
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"--as=yasm"
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# Limit default decoder max to WHXGA
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(if sizeLimitSupport then "--size-limit=5120x3200" else null)
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(enableFeature fastUnalignedSupport "fast-unaligned")
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"--disable-codec-srcs"
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(enableFeature debugLibsSupport "debug-libs")
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(enableFeature isMips "dequant-tokens")
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(enableFeature isMips "dc-recon")
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(enableFeature postprocSupport "postproc")
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(enableFeature (postprocSupport && (vp9DecoderSupport || vp9EncoderSupport)) "vp9-postproc")
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(enableFeature multithreadSupport "multithread")
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(enableFeature internalStatsSupport "internal-stats")
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(enableFeature memTrackerSupport "mem-tracker")
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(enableFeature spatialResamplingSupport "spatial-resampling")
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(enableFeature realtimeOnlySupport "realtime-only")
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(enableFeature ontheflyBitpackingSupport "onthefly-bitpacking")
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(enableFeature errorConcealmentSupport "error-concealment")
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# Shared libraries are only supported on ELF platforms
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(if isDarwin || isCygwin then
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"--enable-static --disable-shared"
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else
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"--disable-static --enable-shared")
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(enableFeature smallSupport "small")
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(enableFeature postprocVisualizerSupport "postproc-visualizer")
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(enableFeature unitTestsSupport "unit-tests")
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(enableFeature webmIOSupport "webm-io")
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(enableFeature libyuvSupport "libyuv")
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(enableFeature decodePerfTestsSupport "decode-perf-tests")
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(enableFeature encodePerfTestsSupport "encode-perf-tests")
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(enableFeature multiResEncodingSupport "multi-res-encoding")
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(enableFeature temporalDenoisingSupport "temporal-denoising")
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(enableFeature (temporalDenoisingSupport && (vp9DecoderSupport || vp9EncoderSupport)) "vp9-temporal-denoising")
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(enableFeature coefficientRangeCheckingSupport "coefficient-range-checking")
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(enableFeature (vp9HighbitdepthSupport && is64bit) "vp9-highbitdepth")
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(enableFeature (experimentalSpatialSvcSupport ||
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experimentalFpMbStatsSupport ||
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experimentalEmulateHardwareSupport) "experimental")
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# Experimental features
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] ++ optional experimentalSpatialSvcSupport "--enable-spatial-svc"
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++ optional experimentalFpMbStatsSupport "--enable-fp-mb-stats"
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++ optional experimentalEmulateHardwareSupport "--enable-emulate-hardware";
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nativeBuildInputs = [ perl yasm ];
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buildInputs = [ ]
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++ optionals unitTestsSupport [ coreutils curl ];
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enableParallelBuilding = true;
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postInstall = ''moveToOutput bin "$bin" '';
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crossAttrs = {
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configurePlatforms = [];
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configureFlags = configureFlags ++ [
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#"--extra-cflags="
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#"--prefix="
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#"--libc="
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#"--libdir="
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"--enable-external-build"
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# libvpx darwin targets include darwin version (ie. ARCH-darwinXX-gcc, XX being the darwin version)
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# See all_platforms: https://github.com/webmproject/libvpx/blob/master/configure
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# Darwin versions: 10.4=8, 10.5=9, 10.6=10, 10.7=11, 10.8=12, 10.9=13, 10.10=14
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"--force-target=${hostPlatform.config}${
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if hostPlatform.isDarwin then
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if hostPlatform.osxMinVersion == "10.10" then "14"
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else if hostPlatform.osxMinVersion == "10.9" then "13"
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else if hostPlatform.osxMinVersion == "10.8" then "12"
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else if hostPlatform.osxMinVersion == "10.7" then "11"
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else if hostPlatform.osxMinVersion == "10.6" then "10"
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else if hostPlatform.osxMinVersion == "10.5" then "9"
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else "8"
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else ""}-gcc"
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(if hostPlatform.isCygwin then "--enable-static-msvcrt" else "")
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];
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};
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meta = with stdenv.lib; {
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description = "WebM VP8/VP9 codec SDK";
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homepage = https://www.webmproject.org/;
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license = licenses.bsd3;
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maintainers = with maintainers; [ codyopel ];
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platforms = platforms.all;
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};
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}
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