rkmedia Description of

rkmedia yes RockChip Linux Multimedia Library of the platform , Encapsulates the interface of the underlying media module , Provide common multimedia solutions .
route ：rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples
This time I'm using rkmedia_venc_local_file_test.c, The function mainly realizes reading from files nv12 Format video file encoding H264,RTP Package and send

rkmedia Of Cmake understand

In path ：examples/CMakeFiles/rkmedia_venc_local_file_test.dir Next , Yes. rkmedia_venc_local_file_test.c Dependency description of file compilation , Compile commands, etc .
Mainly about what we need to change make file
flags.make： Mainly add header file path , And precompiled options C_FLAGS
build.make： Add to compile together .c file

# External object files for target rkmedia_venc_local_file_test
rkmedia_venc_local_file_test_EXTERNAL_OBJECTS =

examples/rkmedia_venc_local_file_test: examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rkmedia_venc_local_file_test.c.o
+examples/rkmedia_venc_local_file_test: examples/rtsp/ringfifo.c.o
+examples/rkmedia_venc_local_file_test: examples/rtsp/rtputils.c.o
+examples/rkmedia_venc_local_file_test: examples/rtsp/rtspservice.c.o
+examples/rkmedia_venc_local_file_test: examples/rtsp/rtsputils.c.o
//SDK There are actually many libraries in it , You don't need to compile it yourself RTSP, It mainly depends on which one you like 

Add precompiled commands

examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rkmedia_venc_local_file_test.c.o: examples/rkmedia_venc_local_file_test.c
	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --progress-dir=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building C object examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rkmedia_venc_local_file_test.c.o"
	cd /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples && /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot $(C_DEFINES) $(C_INCLUDES) $(C_FLAGS) -o CMakeFiles/rkmedia_venc_local_file_test.dir/rkmedia_venc_local_file_test.c.o -c /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples/rkmedia_venc_local_file_test.c
+examples/rtsp/ringfifo.c.o: examples/rtsp/ringfifo.c
	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --progress-dir=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building C object examples/CMakeFiles/rkmedia_venc_local_file_test.dir/ringfifo.c.o"
	cd /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples && /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot $(C_DEFINES) $(C_INCLUDES) $(C_FLAGS) -o CMakeFiles/rkmedia_venc_local_file_test.dir/ringfifo.c.o -c /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples/rtsp/ringfifo.c
+examples/rtsp/rtputils.c.o: examples/rtsp/rtputils.c
	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --progress-dir=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building C object examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rtputils.c.o"
	cd /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples && /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot $(C_DEFINES) $(C_INCLUDES) $(C_FLAGS) -o CMakeFiles/rkmedia_venc_local_file_test.dir/rtputils.c.o -c /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples/rtsp/rtputils.c
+examples/rtsp/rtspservice.c.o: examples/rtsp/rtspservice.c
	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --progress-dir=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building C object examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rtspservice.c.o"
	cd /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples && /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot $(C_DEFINES) $(C_INCLUDES) $(C_FLAGS) -o CMakeFiles/rkmedia_venc_local_file_test.dir/rtspservice.c.o -c /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples/rtsp/rtspservice.c
+examples/rtsp/rtsputils.c.o: examples/rtsp/rtsputils.c
	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --progress-dir=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building C object examples/CMakeFiles/rkmedia_venc_local_file_test.dir/rtsputils.c.o"
	cd /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples && /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot $(C_DEFINES) $(C_INCLUDES) $(C_FLAGS) -o CMakeFiles/rkmedia_venc_local_file_test.dir/rtsputils.c.o -c /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples/rtsp/rtsputils.c

link.txt： There are commands to compile and generate executable files
We just compiled rtsp Add files to

/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os  -DNDEBUG  -rdynamic CMakeFiles/rkmedia_venc_local_file_test.dir/rkmedia_venc_local_file_test.c.o CMakeFiles/rkmedia_venc_local_file_test.dir/ringfifo.c.o CMakeFiles/rkmedia_venc_local_file_test.dir/rtputils.c.o CMakeFiles/rkmedia_venc_local_file_test.dir/rtspservice.c.o CMakeFiles/rkmedia_venc_local_file_test.dir/rtsputils.c.o -o rkmedia_venc_local_file_test -Wl,-rpath,/home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/src: ../src/libeasymedia.so.1.0.1 -ldrm -lrockchip_mpp -lavformat -lavcodec -lswresample -lavutil -lliveMedia -lgroupsock -lBasicUsageEnvironment -lUsageEnvironment -lpthread -lasound -lRKAP_AEC -lRKAP_ANR -lRKAP_Common -lv4l2 -lrga -lrknn_runtime -lrknn_api -lrockface -lsqlite3 -lmd_share -lod_share -lrockx /home/liu/rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/librkaiq.so 

And then in examples Enter the command sudo make You can compile successfully ~

Execute the procedure push It can't run on the board

Because there is no librockchip_mpp.so.1,librockface.so,librkaiq.so,libeasymedia.so.1.0.1 And so on, the library needs to be in /home/liu/rk1109_nand_packge/buildroot/output/ Down path search , Add to the board