gstreamer/sys/meson.build

subdir('androidmedia')
subdir('applemedia')
subdir('bluez')
subdir('d3dvideosink')
subdir('decklink')
subdir('directsound')
#subdir('dshowdecwrapper')
#subdir('dshowsrcwrapper')
#subdir('dshowvideosink')
subdir('dvb')
subdir('fbdev')
subdir('ipcpipeline')
subdir('kms')
subdir('msdk')
subdir('opensles')
subdir('shm')
subdir('tinyalsa')
subdir('uvch264')
subdir('wasapi')
subdir('winks')
subdir('winscreencap')

# CUDA dependency
cuda_dep = dependency('', required : false)
cudart_dep = dependency('', required : false)
cuda_libdir = ''
cuda_incdir = ''

cuda_versions = [
    '10.1',
    '10.0',
    '9.2',
    '9.1',
    '9.0',
    '8.0',
    '7.5',
    '7.0',
    '6.5',
  ]
cuda_ver = ''

# FIXME: use break syntax when we use meson >= '0.49'
foreach v : cuda_versions
  if cuda_ver == ''
    cuda_dep = dependency('cuda-' + v, required: false)
    cudart_dep = dependency('cudart-' + v, required: false)
    if cuda_dep.found() and cudart_dep.found()
      cuda_ver = v
    endif
  endif
endforeach

if cuda_dep.found()
  cuda_header_found = cc.has_header('cuda.h', dependencies: cuda_dep)
  cuda_lib_found = cc.has_function('cuInit', dependencies: cuda_dep)
  if not cuda_header_found or not cuda_lib_found
    message ('Missing required header and/or function in cuda dependency')
    cuda_dep = dependency('', required : false)
  endif
endif

if cudart_dep.found()
  cudart_header_found = cc.has_header('cuda_runtime_api.h', dependencies: cudart_dep)
  cudart_lib_found = cc.has_function('cudaGetErrorString', dependencies: cudart_dep)
  if not cudart_header_found or not cudart_lib_found
    message ('Missing required header and/or function in cudart dependency')
    cudart_dep = dependency('', required : false)
  endif
endif

if not cuda_dep.found() or not cudart_dep.found()
  cuda_root = run_command(python3, '-c', 'import os; print(os.environ.get("CUDA_PATH"))').stdout().strip()
  if cuda_root != '' and cuda_root != 'None'
    if host_machine.system() == 'windows'
      arc = ''
      if build_machine.cpu_family() == 'x86_64'
        arc = 'x64'
      else
        arc = 'Win32'
      endif
      cuda_libdir = join_paths (cuda_root, 'lib', arc)
    else
      cuda_libdir = [join_paths (cuda_root, 'lib'), join_paths (cuda_root, 'lib', 'stubs'),
                     join_paths (cuda_root, 'lib64'), join_paths (cuda_root, 'lib64', 'stubs')]
    endif
    cuda_incdir = join_paths (cuda_root, 'include')
    cuda_lib = cc.find_library('cuda', dirs: cuda_libdir, required: false)
    cudart_lib = cc.find_library('cudart', dirs: cuda_libdir, required: false)

    if cuda_lib.found()
      cuda_header_found = cc.has_header('cuda.h', args: '-I' + cuda_incdir)
      cuda_lib_found = cc.has_function('cuInit', dependencies: cuda_lib)
      if cuda_header_found and cuda_lib_found
        cuda_dep = declare_dependency(include_directories: include_directories(cuda_incdir),
                                      dependencies: cuda_lib)
      endif
    endif

    if cudart_lib.found()
      cudart_header_found = cc.has_header('cuda_runtime_api.h', args: '-I' + cuda_incdir)
      cudart_lib_found = cc.has_function('cudaGetErrorString', dependencies: cudart_lib)
      if cudart_header_found and cudart_lib_found
        cudart_dep = declare_dependency(dependencies: cudart_lib)
      endif
    endif

  endif
endif

if cuda_dep.found() and cudart_dep.found()
  subdir('nvdec')
  subdir('nvenc')
elif get_option('nvdec').enabled()
  error('The nvdec plugin was enabled explicitly, but required CUDA dependencies were not found.')
elif get_option('nvenc').enabled()
  error('The nvenc plugin was enabled explicitly, but required CUDA dependencies were not found.')
endif