diff options
Diffstat (limited to 'v4l2-apps/lib/libv4l/libv4l1')
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/Makefile | 51 | ||||
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/libv4l1-priv.h | 2 | ||||
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/libv4l1.c | 17 | ||||
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/log.c | 9 | ||||
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c | 30 |
5 files changed, 74 insertions, 35 deletions
diff --git a/v4l2-apps/lib/libv4l/libv4l1/Makefile b/v4l2-apps/lib/libv4l/libv4l1/Makefile index 8cb064cd4..27848477e 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/Makefile +++ b/v4l2-apps/lib/libv4l/libv4l1/Makefile @@ -1,20 +1,25 @@ -CC = gcc -LD = gcc - -CPPFLAGS = -fPIC -I../include -I../../../../linux/include +override CPPFLAGS += -I../include -I../../../include -fvisibility=hidden CFLAGS := -g -O1 -CFLAGS += -Wall -W -Wno-unused -Wpointer-arith -Wstrict-prototypes +CFLAGS += -Wall -Wno-unused -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -LDFLAGS = -shared +LIBS = -lpthread -V4L1_OBJS = libv4l1.o log.o ../libv4l2/libv4l2.so -V4L1_LIB = libv4l1.so +V4L1_OBJS = libv4l1.o log.o V4L1COMPAT = v4l1compat.so V4L1COMPAT_O = v4l1compat.o libv4l1.so -TARGETS = $(V4L1_LIB) $(V4L1COMPAT) +TARGETS = $(V4L1_LIB) libv4l1.pc INCLUDES = ../include/libv4l1.h +ifeq ($(LINKTYPE),static) +V4L1_LIB = libv4l1.a +else +V4L1_LIB = libv4l1.so +V4L1_OBJS += ../libv4l2/libv4l2.so +TARGETS += $(V4L1COMPAT) +override CPPFLAGS += -fPIC +endif + ifeq ($(LIB_RELEASE),) LIB_RELEASE = 0 endif @@ -34,23 +39,45 @@ $(V4L1_LIB): $(V4L1_OBJS) $(V4L1COMPAT): $(V4L1COMPAT_O) $(V4L1_LIB) +libv4l1.pc: + @echo prefix=$(PREFIX) > libv4l1.pc + @echo libdir=$(LIBDIR) >> libv4l1.pc + @echo >> libv4l1.pc + @echo 'Name: libv4l1' >> libv4l1.pc + @echo 'Description: v4l1 compatibility library' >> libv4l1.pc + @echo 'Version: '$(V4L2_LIB_VERSION) >> libv4l1.pc + @echo 'Requires: libv4l2' >> libv4l1.pc + @echo 'Libs: -L$${libdir} -lv4l1' >> libv4l1.pc + @echo 'Libs.private: -lpthread' >> libv4l1.pc + @echo 'Cflags: -I$${prefix}/include' >> libv4l1.pc + install: all mkdir -p $(DESTDIR)$(PREFIX)/include install -p -m 644 $(INCLUDES) $(DESTDIR)$(PREFIX)/include +ifeq ($(LINKTYPE),static) + mkdir -p $(DESTDIR)$(LIBDIR) + install -m 644 $(V4L1_LIB) $(DESTDIR)$(LIBDIR) +else mkdir -p $(DESTDIR)$(LIBDIR)/libv4l install -m 755 $(V4L1_LIB).$(LIB_RELEASE) $(DESTDIR)$(LIBDIR) cd $(DESTDIR)$(LIBDIR) && \ ln -f -s $(V4L1_LIB).$(LIB_RELEASE) $(V4L1_LIB) install -m 755 $(V4L1COMPAT).$(LIB_RELEASE) \ $(DESTDIR)$(LIBDIR)/libv4l/$(V4L1COMPAT) +endif + mkdir -p $(DESTDIR)$(LIBDIR)/pkgconfig + install -m 644 libv4l1.pc $(DESTDIR)$(LIBDIR)/pkgconfig clean:: - rm -f *.so* *.o log *~ - rm -f *.d + rm -f *.a *.so* *.o *.d libv4l1.pc log *~ %.o: %.c $(CC) -c -MMD $(CPPFLAGS) $(CFLAGS) -o $@ $< %.so: - $(CC) $(LDFLAGS) -Wl,-soname,$@.$(LIB_RELEASE) -o $@.$(LIB_RELEASE) $^ + $(CC) -shared $(LDFLAGS) -Wl,-soname,$@.$(LIB_RELEASE) -o $@.$(LIB_RELEASE) $^ $(LIBS) ln -f -s $@.$(LIB_RELEASE) $@ + +%.a: + $(AR) cqs $@ $^ + diff --git a/v4l2-apps/lib/libv4l/libv4l1/libv4l1-priv.h b/v4l2-apps/lib/libv4l/libv4l1/libv4l1-priv.h index e09041256..651599255 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/libv4l1-priv.h +++ b/v4l2-apps/lib/libv4l/libv4l1/libv4l1-priv.h @@ -9,7 +9,7 @@ # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. +# GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software diff --git a/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c b/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c index b80fcb56d..39f2d29e0 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c +++ b/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c @@ -28,12 +28,12 @@ capture only devices, or non v4l2 devices. 2) libv4l1 is the base of the v4l1compat.so wrapper lib, which is a .so which can be LD_PRELOAD-ed and the overrules the libc's open/close/etc, - and when opening /dev/videoX calls v4l1_open. Because we behave as the - regular counterpart when the fd is not known (instead of say throwing - an error), v4l1compat.so can simply call the v4l1_ prefixed function - for all wrapped functions. This way the wrapper does not have to keep - track of which fd's are being handled by libv4l1, as libv4l1 already - keeps track of this itself. + and when opening /dev/videoX or /dev/v4l/ calls v4l1_open. Because we + behave as the regular counterpart when the fd is not known (instead of + say throwing an error), v4l1compat.so can simply call the v4l1_ prefixed + function for all wrapped functions. This way the wrapper does not have + to keep track of which fd's are being handled by libv4l1, as libv4l1 + already keeps track of this itself. This also means that libv4l1 may not use any of the regular functions it mimics, as for example open could be a symbol in v4l1compat.so, which @@ -59,6 +59,7 @@ #include <linux/videodev.h> #include <linux/videodev2.h> #include <libv4l2.h> +#include "libv4l1.h" #include "libv4l1-priv.h" #define V4L1_SUPPORTS_ENUMINPUT 0x01 @@ -279,7 +280,7 @@ int v4l1_open (const char *file, int oflag, ...) return fd; /* check if we're opening a video4linux2 device */ - if (strncmp(file, "/dev/video", 10)) + if (strncmp(file, "/dev/video", 10) && strncmp(file, "/dev/v4l/", 9)) return fd; /* check that this is an v4l2 device, no need to emulate v4l1 on @@ -582,7 +583,7 @@ int v4l1_ioctl (int fd, unsigned long int request, ...) input2.index = chan->channel; result = v4l2_ioctl(fd, VIDIOC_ENUMINPUT, &input2); if (result == 0) { - snprintf(chan->name, sizeof(chan->name), "%s", input2.name); + snprintf(chan->name, sizeof(chan->name), "%s", (char*)input2.name); if (input2.type == V4L2_INPUT_TYPE_TUNER) { chan->tuners = 1; chan->type = VIDEO_TYPE_TV; diff --git a/v4l2-apps/lib/libv4l/libv4l1/log.c b/v4l2-apps/lib/libv4l/libv4l1/log.c index 178c6d23c..74ce0f20b 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/log.c +++ b/v4l2-apps/lib/libv4l/libv4l1/log.c @@ -9,7 +9,7 @@ # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. +# GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software @@ -25,6 +25,7 @@ #include <asm/types.h> /* end broken header workaround includes */ #include <linux/videodev.h> +#include "libv4l1-priv.h" #define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0])) @@ -92,9 +93,9 @@ void v4l1_log_ioctl(unsigned long int request, void *arg, int result) break; case VIDIOCGWIN: case VIDIOCSWIN: - fprintf(v4l1_log_file,"width\t%d\n", + fprintf(v4l1_log_file,"width\t%u\n", ((struct video_window *)arg)->width); - fprintf(v4l1_log_file,"height\t%d\n", + fprintf(v4l1_log_file,"height\t%u\n", ((struct video_window *)arg)->height); break; @@ -115,7 +116,7 @@ void v4l1_log_ioctl(unsigned long int request, void *arg, int result) fprintf(v4l1_log_file,"palette %d\n",( (int)((struct video_picture*)arg)->palette) ); break; - case VIDIOCCAPTURE: fprintf(v4l1_log_file,"on/of? %d\n", *((int *)arg) ); + case VIDIOCCAPTURE: fprintf(v4l1_log_file,"on/off? %d\n", *((int *)arg) ); break; case VIDIOCSYNC: fprintf(v4l1_log_file,"sync %d\n", *((int *)arg) ); diff --git a/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c b/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c index db3a0027b..e4293d2f9 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c +++ b/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c @@ -12,7 +12,7 @@ # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. +# GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software @@ -26,12 +26,21 @@ #include <fcntl.h> #include <libv4l1.h> +#include <sys/ioctl.h> +#include <sys/mman.h> + /* Check that open/read/mmap is not a define */ #if defined open || defined read || defined mmap #error open/read/mmap is a prepocessor macro !! #endif -int open (const char *file, int oflag, ...) +#if __GNUC__ >= 4 +#define LIBV4L_PUBLIC __attribute__ ((visibility("default"))) +#else +#define LIBV4L_PUBLIC +#endif + +LIBV4L_PUBLIC int open (const char *file, int oflag, ...) { int fd; @@ -52,7 +61,7 @@ int open (const char *file, int oflag, ...) return fd; } -int open64 (const char *file, int oflag, ...) +LIBV4L_PUBLIC int open64 (const char *file, int oflag, ...) { int fd; @@ -73,16 +82,16 @@ int open64 (const char *file, int oflag, ...) return fd; } -int close(int fd) { +LIBV4L_PUBLIC int close(int fd) { return v4l1_close(fd); } -int dup(int fd) +LIBV4L_PUBLIC int dup(int fd) { return v4l1_dup(fd); } -int ioctl (int fd, unsigned long int request, ...) +LIBV4L_PUBLIC int ioctl (int fd, unsigned long int request, ...) { void *arg; va_list ap; @@ -94,24 +103,25 @@ int ioctl (int fd, unsigned long int request, ...) return v4l1_ioctl (fd, request, arg); } -ssize_t read(int fd, void* buffer, size_t n) +LIBV4L_PUBLIC ssize_t read(int fd, void* buffer, size_t n) { return v4l1_read (fd, buffer, n); } -void mmap(void *start, size_t length, int prot, int flags, int fd, +LIBV4L_PUBLIC void *mmap(void *start, size_t length, int prot, int flags, int fd, __off_t offset) { return v4l1_mmap(start, length, prot, flags, fd, offset); } -void mmap64(void *start, size_t length, int prot, int flags, int fd, +LIBV4L_PUBLIC void *mmap64(void *start, size_t length, int prot, int flags, int fd, __off64_t offset) { return v4l1_mmap(start, length, prot, flags, fd, offset); } -int munmap(void *start, size_t length) +LIBV4L_PUBLIC int munmap(void *start, size_t length) { return v4l1_munmap(start, length); } + |