Added cmake script to build Android samples

CMakeLists.txt

@@ -701,7 +701,8 @@ if (BUILD_JAVA_SUPPORT AND (BUILD_EXAMPLES OR BUILD_TESTS))
         message(STATUS "    Found apache ant ${ANT_VERSION}: ${ANT_EXECUTABLE}")
     endif()
 
-    if (ANDROID_EXECUTABLE AND ANT_EXECUTABLE AND ANT_VERSION VERSION_GREATER 1.8)
+
+    if (ANDROID_EXECUTABLE AND ANT_EXECUTABLE AND (ANT_VERSION VERSION_GREATER 1.7.-1))
         SET(CAN_BUILD_ANDROID_PROJECTS TRUE)
     else()
         SET(CAN_BUILD_ANDROID_PROJECTS FALSE)

android/scripts/cmake_android.sh

@@ -4,5 +4,5 @@ cd `dirname $0`/..
 mkdir -p build
 cd build
 
-cmake -C ../CMakeCache.android.initial.cmake -DCMAKE_TOOLCHAIN_FILE=../android.toolchain.cmake ../..
+cmake -C ../CMakeCache.android.initial.cmake -DCMAKE_TOOLCHAIN_FILE=../android.toolchain.cmake $@ ../..
 

modules/java/CMakeLists.txt

@@ -12,6 +12,8 @@ ENDIF()
 SET(GEN_JAVA "${CMAKE_CURRENT_SOURCE_DIR}/gen_java.py")
 SET(HDR_PARSER "${CMAKE_CURRENT_SOURCE_DIR}/../python/src2/hdr_parser.py")
 
+SET(additional_clean_files "")
+
 foreach(module ${OPENCV_JAVA_MODULES})
     IF(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/config/${module}.filelist")
         FILE(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/config/${module}.filelist" headers_to_parse)
@@ -100,6 +102,7 @@ IF(ANDROID)
                 COMMENT "Generating ${lib_file_name}"
                 )
             install(FILES "${CMAKE_BINARY_DIR}/${lib_file_name}" DESTINATION . COMPONENT main)
+            LIST(APPEND additional_clean_files "${CMAKE_BINARY_DIR}/${lib_file_name}")
         endif()
     endforeach()
 
@@ -111,6 +114,7 @@ IF(ANDROID)
             DEPENDS "${jni_file}"
             COMMENT "Generating jni/${jni_file_name}"
             )
+        LIST(APPEND additional_clean_files "${CMAKE_BINARY_DIR}/jni/${jni_file_name}")
     endforeach()
 ENDIF()
 
@@ -126,8 +130,11 @@ foreach(java_file ${java_project_files} ${generated_java_sources})
         DEPENDS "${JAVA_OUTPUT_DIR}"
         COMMENT "Generating src/org/opencv/${java_file_name}"
         )
+    LIST(APPEND additional_clean_files "${JAVA_OUTPUT_DIR}/${java_file_name}")
     if(ANDROID)
         install(FILES "${JAVA_OUTPUT_DIR}/${java_file_name}" DESTINATION src/org/opencv COMPONENT main)
     endif()
 endforeach()
 
+set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${additional_clean_files}")
+

samples/CMakeLists.txt

@@ -5,7 +5,14 @@
 
 add_subdirectory(c)
 add_subdirectory(cpp)
-add_subdirectory(gpu)
+
+if(NOT ANDROID)
+    add_subdirectory(gpu)
+endif()
+
+if(ANDROID AND CAN_BUILD_ANDROID_PROJECTS)
+   add_subdirectory(android)
+endif()
 
 if(0)
 add_subdirectory(swig_python)

samples/android/0-base/default.properties

-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "build.properties", and override values to adapt the script to your
-# project structure.
-
 # Project target.
 target=android-8

samples/android/1-java/default.properties

-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "build.properties", and override values to adapt the script to your
-# project structure.
-
+android.library.reference.1=../../../android/build
 # Project target.
 target=android-8
-android.library.reference.1=../../../android/build

samples/android/2-native/default.properties

-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "build.properties", and override values to adapt the script to your
-# project structure.
-
 # Project target.
 target=android-8

samples/android/4-mixed/default.properties

-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "build.properties", and override values to adapt the script to your
-# project structure.
-
+android.library.reference.1=../../../android/build
 # Project target.
 target=android-8
-android.library.reference.1=../../../android/build

samples/android/CMakeLists.txt

+# ----------------------------------------------------------------------------
+#  CMake file for Android samples. See root CMakeLists.txt
+#
+# ----------------------------------------------------------------------------
+
+if (BUILD_EXAMPLES)
+    project(android_samples)
+
+    include_directories(
+        "${CMAKE_SOURCE_DIR}/modules/core/include"
+        "${CMAKE_SOURCE_DIR}/modules/flann/include"
+        "${CMAKE_SOURCE_DIR}/modules/imgproc/include"
+        "${CMAKE_SOURCE_DIR}/modules/video/include"
+        "${CMAKE_SOURCE_DIR}/modules/highgui/include"
+        "${CMAKE_SOURCE_DIR}/modules/ml/include"
+        "${CMAKE_SOURCE_DIR}/modules/calib3d/include"
+        "${CMAKE_SOURCE_DIR}/modules/features2d/include"
+        "${CMAKE_SOURCE_DIR}/modules/objdetect/include"
+        "${CMAKE_SOURCE_DIR}/modules/legacy/include"
+        "${CMAKE_SOURCE_DIR}/modules/contrib/include"
+    )
+
+    SET (sample_dependencies opencv_contrib opencv_legacy opencv_objdetect opencv_calib3d opencv_features2d opencv_video opencv_highgui opencv_ml opencv_imgproc opencv_flann opencv_core)
+    if(NOT BUILD_SHARED_LIBS)
+        LIST(APPEND sample_dependencies opencv_androidcamera)
+    endif()
+
+    SET(additional_clean_files "")
+
+    macro(ADD_ANDROID_SAMPLE sample_name)
+        #message(STATUS "Build android sample: '${sample_name}'")
+        SET(sample_dir "${CMAKE_CURRENT_SOURCE_DIR}/${sample}")
+        
+        add_custom_target(${sample} ALL)
+        add_dependencies(${sample} opencv_java opencv_java_api)
+
+        set_target_properties(${sample} PROPERTIES
+            PROJECT_LABEL "(ANDROID EXAMPLE) ${sample}")
+
+        file(RELATIVE_PATH OPENCV_REFERENCE_PATH "${sample_dir}" "${CMAKE_BINARY_DIR}")
+
+        if(NOT ("${sample}" STREQUAL "0-base" OR "${sample}" STREQUAL "2-native"))
+            SET(opencv_reference --library \"${OPENCV_REFERENCE_PATH}\")
+        else()
+            SET(opencv_reference)
+        endif()
+
+        add_custom_command(
+            TARGET ${sample}
+            WORKING_DIRECTORY ${sample_dir}
+            COMMAND ${CMAKE_COMMAND} -E remove -f "${sample_dir}/default.properties"
+            COMMAND ${CMAKE_COMMAND} -E touch "${sample_dir}/default.properties"
+            COMMAND ${ANDROID_EXECUTABLE} update project --name "${sample}" --target 7 ${opencv_reference} --path .
+            COMMAND ${ANT_EXECUTABLE} debug
+            COMMAND ${CMAKE_COMMAND} -E copy "${sample_dir}/bin/${sample}-debug.apk" "${CMAKE_BINARY_DIR}/bin/${sample}-debug.apk"
+        )
+
+        LIST(APPEND additional_clean_files "${CMAKE_BINARY_DIR}/bin/${sample}-debug.apk" "${sample_dir}/build.xml" "${sample_dir}/local.properties" "${sample_dir}/proguard.cfg")
+        
+        if(IS_DIRECTORY "${sample_dir}/jni")
+            INCLUDE_DIRECTORIES("${sample_dir}/jni")
+            FILE( GLOB srcs "${sample_dir}/jni/*.cpp" )
+
+            FILE(STRINGS "${sample_dir}/jni/Android.mk" JNI_LIB_NAME REGEX "LOCAL_MODULE[ ]*:=[ ]*.*" )
+            string(REGEX REPLACE "LOCAL_MODULE[ ]*:=[ ]*([a-zA-Z_][a-zA-Z_0-9]*)[ ]*" "\\1" JNI_LIB_NAME "${JNI_LIB_NAME}")
+
+            ADD_LIBRARY( ${JNI_LIB_NAME} MODULE ${srcs} )
+
+            ADD_DEPENDENCIES(${JNI_LIB_NAME} ${sample_dependencies})
+            TARGET_LINK_LIBRARIES(${JNI_LIB_NAME} ${OPENCV_LINKER_LIBS} ${sample_dependencies})
+
+            set_target_properties(${JNI_LIB_NAME} PROPERTIES
+                OUTPUT_NAME "${JNI_LIB_NAME}"
+                LIBRARY_OUTPUT_DIRECTORY "${sample_dir}/libs/${ARMEABI_NDK_NAME}"
+            )
+
+            ADD_CUSTOM_COMMAND(
+                TARGET ${JNI_LIB_NAME}
+                POST_BUILD
+                COMMAND ${CMAKE_STRIP} "${sample_dir}/libs/${ARMEABI_NDK_NAME}/*.so"
+                )
+
+            add_dependencies(${sample} ${JNI_LIB_NAME})
+        endif()
+    endmacro()
+
+    file(GLOB android_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *)
+    list(SORT android_samples)
+
+    foreach(sample ${android_samples})
+        if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${sample}/AndroidManifest.xml)
+            ADD_ANDROID_SAMPLE(${sample})
+        endif()
+    endforeach()
+
+    set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${additional_clean_files}")
+endif()