From 0d3f75db47da8e0a51eab041eb401bfb6f309174 Mon Sep 17 00:00:00 2001 From: Thierry MERLE Date: Tue, 1 Jul 2008 21:11:29 +0200 Subject: v4l2-library: libv4l2 and v4l2convert From: Hans de Goede libv4l2 offers v4l2_ prefixed versions of open/close/etc. The API is 100% the same as directly opening /dev/videoX using regular open/close/etc, the big difference is that format conversion is done if necessary when capturing. That is if you (try to) set a capture format which is not supported by the cam, but is supported by libv4lconvert, then the try_fmt / set_fmt will succeed as if the cam supports the format and on dqbuf / read the data will be converted for you and returned in the request format. v4l2convert: open/close/ioctl/mmap/munmap library call wrapper doing format conversion for v4l2 applications which want to be able to simply capture bgr24 / yuv420 from v4l2 devices with more exotic frame formats. Signed-off-by: Hans de Goede Signed-off-by: Thierry MERLE --- v4l2-apps/lib/libv4l/libv4l2/Makefile | 52 +++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 v4l2-apps/lib/libv4l/libv4l2/Makefile (limited to 'v4l2-apps/lib/libv4l/libv4l2/Makefile') diff --git a/v4l2-apps/lib/libv4l/libv4l2/Makefile b/v4l2-apps/lib/libv4l/libv4l2/Makefile new file mode 100644 index 000000000..c5463800b --- /dev/null +++ b/v4l2-apps/lib/libv4l/libv4l2/Makefile @@ -0,0 +1,52 @@ +CC = gcc +LD = gcc + +CPPFLAGS = -fPIC -I../include -I../../../../linux/include + +CFLAGS := -g -O1 +CFLAGS += -Wall -W -Wno-unused -Wpointer-arith -Wstrict-prototypes + +LDFLAGS = -shared + +V4L2_OBJS = libv4l2.o log.o ../libv4lconvert/libv4lconvert.so +V4L2_LIB = libv4l2.so +V4L2CONVERT = v4l2convert.so +V4L2CONVERT_O = v4l2convert.o libv4l2.so +TARGETS = $(V4L2_LIB) $(V4L2CONVERT) +INCLUDES = ../include/libv4l2.h + +ifeq ($(LIB_RELEASE),) +LIB_RELEASE = 0 +endif + +ifeq ($(DESTDIR),) +DESTDIR = /usr/local +endif + +all: $(TARGETS) + +$(V4L2_LIB): $(V4L2_OBJS) + +$(V4L2CONVERT): $(V4L2CONVERT_O) $(V4L2_LIB) + +install: all + mkdir -p $(DESTDIR)/include + cp $(INCLUDES) $(DESTDIR)/include + mkdir -p $(DESTDIR)/lib + cp $(V4L2_LIB).$(LIB_RELEASE) $(DESTDIR)/lib + cd $(DESTDIR)/lib && \ + ln -f -s $(V4L2_LIB).$(LIB_RELEASE) $(V4L2_LIB) + cp $(V4L2CONVERT).$(LIB_RELEASE) $(DESTDIR)/lib + cd $(DESTDIR)/lib && \ + ln -f -s $(V4L2CONVERT).$(LIB_RELEASE) $(V4L2CONVERT) + +clean:: + rm -f *.so* *.o log *~ + rm -f *.d + +%.o: %.c + $(CC) -c -MMD $(CPPFLAGS) $(CFLAGS) -o $@ $< + +%.so: + $(CC) $(LDFLAGS) -Wl,-soname,$@.$(LIB_RELEASE) -o $@.$(LIB_RELEASE) $^ + ln -f -s $@.$(LIB_RELEASE) $@ -- cgit v1.2.3