新增视频流播放

ffmpegdemo/ffmpeg/ffmpeg.pri

@@ -0,0 +1,31 @@
+HEADERS     += $$PWD/ffmpeghead.h
+HEADERS     += $$PWD/ffmpeg.h
+SOURCES     += $$PWD/ffmpeg.cpp
+
+#ffmpeg4则使用ffmpeg4的目录
+contains(DEFINES, ffmpeg4) {
+strPath = ffmpeg4
+} else {
+strPath = ffmpeg3
+}
+
+#32位的库则使用32位的库的头文件和lib文件
+contains(DEFINES, qt32) {
+strLib = winlib
+strInclude = include
+} else {
+strLib = winlib64
+strInclude = include64
+}
+
+INCLUDEPATH += $$PWD/$$strPath/$$strInclude
+INCLUDEPATH += $$PWD/$$strPath/$$strInclude/plugins
+
+win32 {
+LIBS += -L$$PWD/$$strPath/$$strLib/ -lavcodec -lavfilter -lavformat -lswscale -lavutil -lswresample -lavdevice
+}
+
+#请自行替换
+unix {
+LIBS += -L$$PWD/linuxlib/ -lavfilter -lavformat -lavdevice -lavcodec -lswscale -lavutil -lswresample -lavdevice -lpthread -lm -lz -lrt -ldl
+}