diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/media_device.cpp | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp index aa93da75..4df0a27f 100644 --- a/src/libcamera/media_device.cpp +++ b/src/libcamera/media_device.cpp @@ -63,15 +63,14 @@ LOG_DEFINE_CATEGORY(MediaDevice) * populate() before the media graph can be queried. */ MediaDevice::MediaDevice(const std::string &deviceNode) - : deviceNode_(deviceNode), fd_(-1), valid_(false), acquired_(false), + : deviceNode_(deviceNode), valid_(false), acquired_(false), lockOwner_(false) { } MediaDevice::~MediaDevice() { - if (fd_ != -1) - ::close(fd_); + fd_.reset(); clear(); } @@ -143,14 +142,14 @@ void MediaDevice::release() */ bool MediaDevice::lock() { - if (fd_ == -1) + if (!fd_.isValid()) return false; /* Do not allow nested locking in the same libcamera instance. */ if (lockOwner_) return false; - if (lockf(fd_, F_TLOCK, 0)) + if (lockf(fd_.get(), F_TLOCK, 0)) return false; lockOwner_ = true; @@ -169,7 +168,7 @@ bool MediaDevice::lock() */ void MediaDevice::unlock() { - if (fd_ == -1) + if (!fd_.isValid()) return; if (!lockOwner_) @@ -177,7 +176,7 @@ void MediaDevice::unlock() lockOwner_ = false; - lockf(fd_, F_ULOCK, 0); + lockf(fd_.get(), F_ULOCK, 0); } /** @@ -220,7 +219,7 @@ int MediaDevice::populate() return ret; struct media_device_info info = {}; - ret = ioctl(fd_, MEDIA_IOC_DEVICE_INFO, &info); + ret = ioctl(fd_.get(), MEDIA_IOC_DEVICE_INFO, &info); if (ret) { ret = -errno; LOG(MediaDevice, Error) @@ -243,7 +242,7 @@ int MediaDevice::populate() topology.ptr_links = reinterpret_cast<uintptr_t>(links); topology.ptr_pads = reinterpret_cast<uintptr_t>(pads); - ret = ioctl(fd_, MEDIA_IOC_G_TOPOLOGY, &topology); + ret = ioctl(fd_.get(), MEDIA_IOC_G_TOPOLOGY, &topology); if (ret < 0) { ret = -errno; LOG(MediaDevice, Error) @@ -481,20 +480,19 @@ int MediaDevice::disableLinks() */ int MediaDevice::open() { - if (fd_ != -1) { + if (fd_.isValid()) { LOG(MediaDevice, Error) << "MediaDevice already open"; return -EBUSY; } - int ret = ::open(deviceNode_.c_str(), O_RDWR); - if (ret < 0) { - ret = -errno; + fd_ = UniqueFD(::open(deviceNode_.c_str(), O_RDWR)); + if (!fd_.isValid()) { + int ret = -errno; LOG(MediaDevice, Error) << "Failed to open media device at " << deviceNode_ << ": " << strerror(-ret); return ret; } - fd_ = ret; return 0; } @@ -514,11 +512,7 @@ int MediaDevice::open() */ void MediaDevice::close() { - if (fd_ == -1) - return; - - ::close(fd_); - fd_ = -1; + fd_.reset(); } /** @@ -756,7 +750,7 @@ void MediaDevice::fixupEntityFlags(struct media_v2_entity *entity) struct media_entity_desc desc = {}; desc.id = entity->id; - int ret = ioctl(fd_, MEDIA_IOC_ENUM_ENTITIES, &desc); + int ret = ioctl(fd_.get(), MEDIA_IOC_ENUM_ENTITIES, &desc); if (ret < 0) { ret = -errno; LOG(MediaDevice, Debug) @@ -799,7 +793,7 @@ int MediaDevice::setupLink(const MediaLink *link, unsigned int flags) linkDesc.flags = flags; - int ret = ioctl(fd_, MEDIA_IOC_SETUP_LINK, &linkDesc); + int ret = ioctl(fd_.get(), MEDIA_IOC_SETUP_LINK, &linkDesc); if (ret) { ret = -errno; LOG(MediaDevice, Error) |