RK1109_RK1126-rkmedia的描述

rkmedia的描述

rkmedia是RockChip Linux平台的多媒体库，封装了底层媒体模块接口，提供常用多媒体解决方案。

路径：

rk1109_nand_packge/buildroot/output/rockchip_rv1126_rv1109_spi_nand/build/rkmedia/examples
这次我使用的是rkmedia_venc_local_file_test.c，功能主要实现从文件读取nv12格式视频文件编码H264，RTP打包发出

rkmedia的Cmake了解

在路径：

examples/CMakeFiles/rkmedia_venc_local_file_test.dir下，有对rkmedia_venc_local_file_test.c文件编译的依赖描述，编译命令等。

主要说一下我们要改的make文件

flags.make：主要添加头文件路径，以及预编译选项C_FLAGS
build.make：添加要一起编译的.c文件

#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里面其实已经有很多库，也不需要自己编译RTSP，主要看自己喜欢哪种

添加预编译命令

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：里面是编译生成可执行文件的命令

我们把刚刚编译好的rtsp文件添加进去

/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

然后在examples输入命令sudo make即可编译成功啦~

把执行程序push到板子上运行不了

因为板子上默认没有librockchip_mpp.so.1，librockface.so，librkaiq.so，libeasymedia.so.1.0.1等等的库需要自己在/home/liu/rk1109_nand_packge/buildroot/output/下路径搜索，添加到板子上

原作者：I&You