Added targets to build iOs framework

mediapipe/tasks/ios/BUILD

@@ -0,0 +1,81 @@
+# Copyright 2023 The MediaPipe Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load(
+    "//mediapipe/tasks/ios:ios.bzl",
+    "MPP_TASK_MINIMUM_OS_VERSION",
+    "strip_api_include_path_prefix",
+)
+load(
+    "@build_bazel_rules_apple//apple:apple.bzl",
+    "apple_static_xcframework",
+    "apple_static_library",
+)
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+strip_api_include_path_prefix(
+    name = "strip_api_include_path",
+    hdr_labels = [
+        "//mediapipe/tasks/ios/common:sources/MPPCommon.h",
+        "//mediapipe/tasks/ios/components/containers:sources/MPPCategory.h",
+        "//mediapipe/tasks/ios/components/containers:sources/MPPClassificationResult.h",
+        "//mediapipe/tasks/ios/components/containers:sources/MPPEmbedding.h",
+        "//mediapipe/tasks/ios/components/containers:sources/MPPEmbeddingResult.h",
+        "//mediapipe/tasks/ios/core:sources/MPPBaseOptions.h",
+        "//mediapipe/tasks/ios/core:sources/MPPTaskOptions.h",
+        "//mediapipe/tasks/ios/core:sources/MPPTaskResult.h",
+        "//mediapipe/tasks/ios/text/text_classifier:sources/MPPTextClassifier.h",
+        "//mediapipe/tasks/ios/text/text_classifier:sources/MPPTextClassifierOptions.h",
+        "//mediapipe/tasks/ios/text/text_classifier:sources/MPPTextClassifierResult.h",
+        "//mediapipe/tasks/ios/text/text_embedder:sources/MPPTextEmbedder.h",
+        "//mediapipe/tasks/ios/text/text_embedder:sources/MPPTextEmbedderOptions.h",
+        "//mediapipe/tasks/ios/text/text_embedder:sources/MPPTextEmbedderResult.h",
+    ],
+)
+
+apple_static_xcframework(
+    name = "MediaPipeTaskText_framework",
+    public_hdrs = [
+        ":MPPBaseOptions.h",
+        ":MPPCategory.h",
+        ":MPPClassificationResult.h",
+        ":MPPEmbedding.h",
+        ":MPPEmbeddingResult.h",
+        ":MPPCommon.h",
+        ":MPPTaskOptions.h",
+        ":MPPTaskResult.h",
+        ":MPPTextClassifier.h",
+        ":MPPTextClassifierOptions.h",
+        ":MPPTextClassifierResult.h",
+        ":MPPTextEmbedder.h",
+        ":MPPTextEmbedderOptions.h",
+        ":MPPTextEmbedderResult.h",
+    ],
+    bundle_name = "MediaPipeTaskText",
+    ios = {
+        "simulator" : ["arm64", "x86_64"],
+        "device" : ["arm64"],
+    },
+    minimum_os_versions = {
+        "ios": MPP_TASK_MINIMUM_OS_VERSION,
+    },
+    deps = [
+        "//mediapipe/tasks/ios/text/text_classifier:MPPTextClassifier",
+        "//mediapipe/tasks/ios/text/text_embedder:MPPTextEmbedder",
+        "@org_tensorflow//third_party/icu/data:conversion_data",
+    ],
+)

mediapipe/tasks/ios/ios.bzl

@@ -1,3 +1,40 @@
 """MediaPipe Task Library Helper Rules for iOS"""
 
 MPP_TASK_MINIMUM_OS_VERSION = "11.0"
+
+# When the static framework is built with bazel, the all header files are moved
+# to the "Headers" directory with no header path prefixes. This auxiliary rule
+# is used for stripping the path prefix to the C/iOS API header files included by
+# other C/iOS API header files.
+# In case of C header files includes start with a keyword of "#include'.
+# Imports in iOS header files start with a keyword of '#import'.
+def strip_api_include_path_prefix(name, hdr_labels, prefix = ""):
+    """Create modified header files with the import path stripped out.
+
+    Args:
+      name: The name to be used as a prefix to the generated genrules.
+      hdr_labels: List of header labels to strip out the include path. Each
+          label must end with a colon followed by the header file name.
+      prefix: Optional prefix path to prepend to the header inclusion path.
+    """
+    for hdr_label in hdr_labels:
+        hdr_filename = hdr_label.split(":")[-1]
+
+        # The last path component of iOS header files is sources/some_file.h
+        # Hence it wiill contain a '/'. So the string can be split at '/' to get 
+        # the header file name.
+        if "/" in hdr_filename:
+            hdr_filename = hdr_filename.split("/")[-1]
+
+        hdr_basename = hdr_filename.split(".")[0]
+        native.genrule(
+            name = "{}_{}".format(name, hdr_basename),
+            srcs = [hdr_label],
+            outs = [hdr_filename],
+            cmd = """
+            sed 's|#\\([a-z]*\\) ".*/\\([^/]\\{{1,\\}}\\.h\\)"|#\\1 "{}\\2"|'\
+            "$(location {})"\
+            > "$@"
+            """.format(prefix, hdr_label),
+        )
+