drawing mono font, ci matrix release, source package (#76)

README.md

@@ -25,22 +25,28 @@
 
 :heavy_check_mark: All the binaries are compiled from source on github action, **no virus**, **no backdoor**, **no secret code**.
 
+|opencv 4.8.1 source|package size|
+|:-:|:-:|
+|The official opencv|92.2 MB|
+|opencv-mobile|10.5 MB|
+
 |opencv 4.8.1 android|package size|
 |:-:|:-:|
 |The official opencv|189 MB|
-|opencv-mobile|18.1 MB|
+|opencv-mobile|17.9 MB|
 
 |opencv 4.8.1 ios|package size|package size with bitcode|
 |:-:|:-:|:-:|
 |The official opencv|197 MB|missing :(|
-|opencv-mobile|10 MB|34.7 MB|
+|opencv-mobile|9.9 MB|34.3 MB|
 
 # Download
 
 https://github.com/nihui/opencv-mobile/releases/latest
 
 |Platform|Arch|opencv-2.4.13.7|opencv-3.4.20|opencv-4.8.1|
 |:-:|:-:|:-:|:-:|:-:|
+|Source| |[![download-icon]][opencv2-source-url]|[![download-icon]][opencv3-source-url]|[![download-icon]][opencv4-source-url]|
 |Android|armeabi-v7a<br />arm64-v8a<br />x86<br />x86_64|[![download-icon]][opencv2-android-url]|[![download-icon]][opencv3-android-url]|[![download-icon]][opencv4-android-url]|
 |iOS|armv7<br />arm64<br />arm64e|[![download-icon]][opencv2-ios-url]<br />[![bitcode-icon]][opencv2-ios-bitcode-url]|[![download-icon]][opencv3-ios-url]<br />[![bitcode-icon]][opencv3-ios-bitcode-url]|[![download-icon]][opencv4-ios-url]<br />[![bitcode-icon]][opencv4-ios-bitcode-url]|
 |iOS-Simulator|i386<br />x86_64<br />arm64|[![download-icon]][opencv2-ios-simulator-url]<br />[![bitcode-icon]][opencv2-ios-simulator-bitcode-url]|[![download-icon]][opencv3-ios-simulator-url]<br />[![bitcode-icon]][opencv3-ios-simulator-bitcode-url]|[![download-icon]][opencv4-ios-simulator-url]<br />[![bitcode-icon]][opencv4-ios-simulator-bitcode-url]|
@@ -59,6 +65,10 @@ https://github.com/nihui/opencv-mobile/releases/latest
 [download-icon]: https://img.shields.io/badge/download-blue?style=for-the-badge
 [bitcode-icon]: https://img.shields.io/badge/+bitcode-blue?style=for-the-badge
 
+[opencv2-source-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-2.4.13.7.zip
+[opencv3-source-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-3.4.20.zip
+[opencv4-source-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-4.8.1.zip
+
 [opencv2-android-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-2.4.13.7-android.zip
 [opencv3-android-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-3.4.20-android.zip
 [opencv4-android-url]: https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-4.8.1-android.zip
@@ -179,42 +189,42 @@ target_link_libraries(your_target ${OpenCV_LIBS})
 
 # How-to-build your custom package
 
-**step 1. download opencv source**
-```shell
-wget -q https://github.com/opencv/opencv/archive/4.8.1.zip -O opencv-4.8.1.zip
-unzip -q opencv-4.8.1.zip
-cd opencv-4.8.1
-```
+We reduce the binary size of opencv-mobile in 3 ways
+1. Reimplement some modules (such as highgui) and functions (such as putText)
+2. Apply patches to disable rtti/exceptions and do not install non-essential files
+3. Carefully select cmake options to retain only the modules and functions you want
+
+Steps 1 and 2 are relatively cumbersome and difficult, and require intrusive changes to the opencv source code. If you want to know the details, please refer to the steps in `.github/workflows/release.yml`
 
-**step 2. strip zlib dependency and use stb-based highgui implementation (optional)**
+The opencv-mobile source code package is the result of steps 1 and 2. Based on it, we can adjust the cmake option to compile our own package and further delete and add modules and other functions.
+
+**step 1. download opencv-mobile source**
 ```shell
-patch -p1 -i ../opencv-4.8.1-no-zlib.patch
-truncate -s 0 cmake/OpenCVFindLibsGrfmt.cmake
-rm -rf modules/gapi
-rm -rf modules/highgui
-cp -r ../highgui modules/
+wget -q https://github.com/nihui/opencv-mobile/releases/latest/download/opencv-mobile-4.8.1.zip
+unzip -q opencv-mobile-4.8.1.zip
+cd opencv-mobile-4.8.1
 ```
 
-**step 3. patch opencv source for no-rtti build (optional)**
+**step 2. apply your opencv option changes to options.txt**
 ```shell
-patch -p1 -i ../opencv-4.8.1-no-rtti.patch
+vim options.txt
 ```
 
-**step 4. apply your opencv options to opencv4_cmake_options.txt**
-
-**step 5. build your opencv package with cmake**
+**step 3. build your opencv package with cmake**
 ```shell
 mkdir -p build
 cd build
 cmake -DCMAKE_INSTALL_PREFIX=install \
--DCMAKE_BUILD_TYPE=Release \
-`cat ../../opencv4_cmake_options.txt` \
--DBUILD_opencv_world=OFF ..
+  -DCMAKE_BUILD_TYPE=Release \
+  `cat ../options.txt` \
+  -DBUILD_opencv_world=OFF ..
+make -j4
+make install
 ```
 
-**step 6. make a package**
+**step 4. make a package**
 ```shell
-zip -r -9 opencv-mobile-4.8.1.zip install
+zip -r -9 opencv-mobile-4.8.1-mypackage.zip install
 ```
 
 # Some notes

opencv4_cmake_options.txt

@@ -39,6 +39,8 @@
 -DWITH_CLP=OFF
 -DWITH_OPENCL=OFF
 -DWITH_OPENCL_SVM=OFF
+-DWITH_VA=OFF
+-DWITH_VA_INTEL=OFF
 -DWITH_ITT=OFF
 -DWITH_PROTOBUF=OFF
 -DWITH_IMGCODEC_HDR=OFF

Info.plist → patches/Info.plist

@@ -3,9 +3,9 @@
 <plist version="1.0">
 <dict>
     <key>CFBundleName</key>
-    <string>__NAME__</string>
+    <string>OpenCV</string>
     <key>CFBundleIdentifier</key>
-    <string>__IDENTIFIER__</string>
+    <string>org.opencv</string>
     <key>CFBundleVersion</key>
     <string>__VERSION__</string>
     <key>CFBundleShortVersionString</key>