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pipewire-v4l2: More improvements

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Keep separate map for fd to files so we can implement dup.

Filter out duplicates in enumfmt.

tryfmt should return the closest match.

Use pthread_once to init the global state.

Make things mostly work in GStreamer.
This commit is contained in:
Wim Taymans 2021-10-09 19:12:30 +02:00
parent 8175c8276d
commit 3ee852b808
3 changed files with 388 additions and 265 deletions
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20
pipewire-v4l2/src/v4l2-func.c
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@ -48,7 +48,7 @@ SPA_EXPORT int open(const char *path, int oflag, ...)
if (oflag & O_CREAT || oflag & O_TMPFILE)
extract_va_arg(mode_t, mode, oflag);
return fops.openat(AT_FDCWD, path, oflag, mode);
return get_fops()->openat(AT_FDCWD, path, oflag, mode);
}
/* _FORTIFY_SOURCE redirects open to __open_2 */
@ -64,7 +64,7 @@ SPA_EXPORT int open64(const char *path, int oflag, ...)
if (oflag & O_CREAT || oflag & O_TMPFILE)
extract_va_arg(mode_t, mode, oflag);
return fops.openat(AT_FDCWD, path, oflag | O_LARGEFILE, mode);
return get_fops()->openat(AT_FDCWD, path, oflag | O_LARGEFILE, mode);
}
SPA_EXPORT int __open64_2(const char *path, int oflag)
@ -79,7 +79,7 @@ SPA_EXPORT int openat(int dirfd, const char *path, int oflag, ...)
if (oflag & O_CREAT || oflag & O_TMPFILE)
extract_va_arg(mode_t, mode, oflag);
return fops.openat(dirfd, path, oflag, mode);
return get_fops()->openat(dirfd, path, oflag, mode);
}
SPA_EXPORT int __openat_2(int dirfd, const char *path, int oflag)
@ -94,7 +94,7 @@ SPA_EXPORT int openat64(int dirfd, const char *path, int oflag, ...)
if (oflag & O_CREAT || oflag & O_TMPFILE)
extract_va_arg(mode_t, mode, oflag);
return fops.openat(dirfd, path, oflag | O_LARGEFILE, mode);
return get_fops()->openat(dirfd, path, oflag | O_LARGEFILE, mode);
}
SPA_EXPORT int __openat64_2(int dirfd, const char *path, int oflag)
@ -105,36 +105,36 @@ SPA_EXPORT int __openat64_2(int dirfd, const char *path, int oflag)
SPA_EXPORT int dup(int oldfd)
{
return fops.dup(oldfd);
return get_fops()->dup(oldfd);
}
SPA_EXPORT int close(int fd)
{
return fops.close(fd);
return get_fops()->close(fd);
}
SPA_EXPORT void *mmap(void *addr, size_t length, int prot, int flags,
int fd, off_t offset)
{
return fops.mmap(addr, length, prot, flags, fd, offset);
return get_fops()->mmap(addr, length, prot, flags, fd, offset);
}
#ifndef mmap64
SPA_EXPORT void *mmap64(void *addr, size_t length, int prot, int flags,
int fd, off64_t offset)
{
return fops.mmap(addr, length, prot, flags, fd, offset);
return get_fops()->mmap(addr, length, prot, flags, fd, offset);
}
#endif
SPA_EXPORT int munmap(void *addr, size_t length)
{
return fops.munmap(addr, length);
return get_fops()->munmap(addr, length);
}
SPA_EXPORT int ioctl(int fd, unsigned long int request, ...)
{
void *arg;
extract_va_arg(void *, arg, request);
return fops.ioctl(fd, request, arg);
return get_fops()->ioctl(fd, request, arg);
}