1 files changed, 269 insertions, 0 deletions
diff --git a/third_party/libwebrtc/tools_webrtc/android/build_aar.py b/third_party/libwebrtc/tools_webrtc/android/build_aar.py
new file mode 100755
index 0000000000..d910b39a7c
--- /dev/null
+++ b/third_party/libwebrtc/tools_webrtc/android/build_aar.py
@@ -0,0 +1,269 @@
+#!/usr/bin/env vpython3
+
+# Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+"""Script to generate libwebrtc.aar for distribution.
+
+The script has to be run from the root src folder.
+./tools_webrtc/android/build_aar.py
+
+.aar-file is just a zip-archive containing the files of the library. The file
+structure generated by this script looks like this:
+ - AndroidManifest.xml
+ - classes.jar
+ - libs/
+   - armeabi-v7a/
+     - libjingle_peerconnection_so.so
+   - x86/
+     - libjingle_peerconnection_so.so
+"""
+
+import argparse
+import logging
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import zipfile
+
+SCRIPT_DIR = os.path.dirname(os.path.realpath(sys.argv[0]))
+SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir))
+DEFAULT_ARCHS = ['armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64']
+NEEDED_SO_FILES = ['libjingle_peerconnection_so.so']
+JAR_FILE = 'lib.java/sdk/android/libwebrtc.jar'
+MANIFEST_FILE = 'sdk/android/AndroidManifest.xml'
+TARGETS = [
+    'sdk/android:libwebrtc',
+    'sdk/android:libjingle_peerconnection_so',
+]
+
+sys.path.append(os.path.join(SCRIPT_DIR, '..', 'libs'))
+from generate_licenses import LicenseBuilder
+
+sys.path.append(os.path.join(SRC_DIR, 'build'))
+import find_depot_tools
+
+
+def _ParseArgs():
+  parser = argparse.ArgumentParser(description='libwebrtc.aar generator.')
+  parser.add_argument(
+      '--build-dir',
+      type=os.path.abspath,
+      help='Build dir. By default will create and use temporary dir.')
+  parser.add_argument('--output',
+                      default='libwebrtc.aar',
+                      type=os.path.abspath,
+                      help='Output file of the script.')
+  parser.add_argument('--arch',
+                      default=DEFAULT_ARCHS,
+                      nargs='*',
+                      help='Architectures to build. Defaults to %(default)s.')
+  parser.add_argument('--use-goma',
+                      action='store_true',
+                      default=False,
+                      help='Use goma.')
+  parser.add_argument('--use-remoteexec',
+                      action='store_true',
+                      default=False,
+                      help='Use RBE.')
+  parser.add_argument('--use-unstripped-libs',
+                      action='store_true',
+                      default=False,
+                      help='Use unstripped .so files within libwebrtc.aar')
+  parser.add_argument('--verbose',
+                      action='store_true',
+                      default=False,
+                      help='Debug logging.')
+  parser.add_argument(
+      '--extra-gn-args',
+      default=[],
+      nargs='*',
+      help="""Additional GN arguments to be used during Ninja generation.
+              These are passed to gn inside `--args` switch and
+              applied after any other arguments and will
+              override any values defined by the script.
+              Example of building debug aar file:
+              build_aar.py --extra-gn-args='is_debug=true'""")
+  parser.add_argument(
+      '--extra-ninja-switches',
+      default=[],
+      nargs='*',
+      help="""Additional Ninja switches to be used during compilation.
+              These are applied after any other Ninja switches.
+              Example of enabling verbose Ninja output:
+              build_aar.py --extra-ninja-switches='-v'""")
+  parser.add_argument(
+      '--extra-gn-switches',
+      default=[],
+      nargs='*',
+      help="""Additional GN switches to be used during compilation.
+              These are applied after any other GN switches.
+              Example of enabling verbose GN output:
+              build_aar.py --extra-gn-switches='-v'""")
+  return parser.parse_args()
+
+
+def _RunGN(args):
+  cmd = [
+      sys.executable,
+      os.path.join(find_depot_tools.DEPOT_TOOLS_PATH, 'gn.py')
+  ]
+  cmd.extend(args)
+  logging.debug('Running: %r', cmd)
+  subprocess.check_call(cmd)
+
+
+def _RunNinja(output_directory, args):
+  cmd = [
+      os.path.join(SRC_DIR, 'third_party', 'ninja', 'ninja'), '-C',
+      output_directory
+  ]
+  cmd.extend(args)
+  logging.debug('Running: %r', cmd)
+  subprocess.check_call(cmd)
+
+
+def _EncodeForGN(value):
+  """Encodes value as a GN literal."""
+  if isinstance(value, str):
+    return '"' + value + '"'
+  if isinstance(value, bool):
+    return repr(value).lower()
+  return repr(value)
+
+
+def _GetOutputDirectory(build_dir, arch):
+  """Returns the GN output directory for the target architecture."""
+  return os.path.join(build_dir, arch)
+
+
+def _GetTargetCpu(arch):
+  """Returns target_cpu for the GN build with the given architecture."""
+  if arch in ['armeabi', 'armeabi-v7a']:
+    return 'arm'
+  if arch == 'arm64-v8a':
+    return 'arm64'
+  if arch == 'x86':
+    return 'x86'
+  if arch == 'x86_64':
+    return 'x64'
+  raise Exception('Unknown arch: ' + arch)
+
+
+def _GetArmVersion(arch):
+  """Returns arm_version for the GN build with the given architecture."""
+  if arch == 'armeabi':
+    return 6
+  if arch == 'armeabi-v7a':
+    return 7
+  if arch in ['arm64-v8a', 'x86', 'x86_64']:
+    return None
+  raise Exception('Unknown arch: ' + arch)
+
+
+def Build(build_dir, arch, use_goma, use_remoteexec, extra_gn_args,
+          extra_gn_switches, extra_ninja_switches):
+  """Generates target architecture using GN and builds it using ninja."""
+  logging.info('Building: %s', arch)
+  output_directory = _GetOutputDirectory(build_dir, arch)
+  gn_args = {
+      'target_os': 'android',
+      'is_debug': False,
+      'is_component_build': False,
+      'rtc_include_tests': False,
+      'target_cpu': _GetTargetCpu(arch),
+      'use_goma': use_goma,
+      'use_remoteexec': use_remoteexec,
+  }
+  arm_version = _GetArmVersion(arch)
+  if arm_version:
+    gn_args['arm_version'] = arm_version
+  gn_args_str = '--args=' + ' '.join(
+      [k + '=' + _EncodeForGN(v) for k, v in gn_args.items()] + extra_gn_args)
+
+  gn_args_list = ['gen', output_directory, gn_args_str]
+  gn_args_list.extend(extra_gn_switches)
+  _RunGN(gn_args_list)
+
+  ninja_args = TARGETS[:]
+  if use_goma or use_remoteexec:
+    ninja_args.extend(['-j', '200'])
+  ninja_args.extend(extra_ninja_switches)
+  _RunNinja(output_directory, ninja_args)
+
+
+def CollectCommon(aar_file, build_dir, arch):
+  """Collects architecture independent files into the .aar-archive."""
+  logging.info('Collecting common files.')
+  output_directory = _GetOutputDirectory(build_dir, arch)
+  aar_file.write(MANIFEST_FILE, 'AndroidManifest.xml')
+  aar_file.write(os.path.join(output_directory, JAR_FILE), 'classes.jar')
+
+
+def Collect(aar_file, build_dir, arch, unstripped):
+  """Collects architecture specific files into the .aar-archive."""
+  logging.info('Collecting: %s', arch)
+  output_directory = _GetOutputDirectory(build_dir, arch)
+
+  abi_dir = os.path.join('jni', arch)
+  for so_file in NEEDED_SO_FILES:
+    source_so_file = os.path.join("lib.unstripped",
+                                  so_file) if unstripped else so_file
+    aar_file.write(os.path.join(output_directory, source_so_file),
+                   os.path.join(abi_dir, so_file))
+
+
+def GenerateLicenses(output_dir, build_dir, archs):
+  builder = LicenseBuilder(
+      [_GetOutputDirectory(build_dir, arch) for arch in archs], TARGETS)
+  builder.GenerateLicenseText(output_dir)
+
+
+def BuildAar(archs,
+             output_file,
+             use_goma=False,
+             use_remoteexec=False,
+             extra_gn_args=None,
+             ext_build_dir=None,
+             extra_gn_switches=None,
+             extra_ninja_switches=None,
+             unstripped=False):
+  extra_gn_args = extra_gn_args or []
+  extra_gn_switches = extra_gn_switches or []
+  extra_ninja_switches = extra_ninja_switches or []
+  build_dir = ext_build_dir if ext_build_dir else tempfile.mkdtemp()
+
+  for arch in archs:
+    Build(build_dir, arch, use_goma, use_remoteexec, extra_gn_args,
+          extra_gn_switches, extra_ninja_switches)
+
+  with zipfile.ZipFile(output_file, 'w') as aar_file:
+    # Architecture doesn't matter here, arbitrarily using the first one.
+    CollectCommon(aar_file, build_dir, archs[0])
+    for arch in archs:
+      Collect(aar_file, build_dir, arch, unstripped)
+
+  license_dir = os.path.dirname(os.path.realpath(output_file))
+  GenerateLicenses(license_dir, build_dir, archs)
+
+  if not ext_build_dir:
+    shutil.rmtree(build_dir, True)
+
+
+def main():
+  args = _ParseArgs()
+  logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO)
+
+  BuildAar(args.arch, args.output, args.use_goma, args.use_remoteexec,
+           args.extra_gn_args, args.build_dir, args.extra_gn_switches,
+           args.extra_ninja_switches, args.use_unstripped_libs)
+
+
+if __name__ == '__main__':
+  sys.exit(main())