diff options
| -rw-r--r-- | src/v4l2/v4l2_camera_file.cpp | 4 | ||||
| -rw-r--r-- | src/v4l2/v4l2_camera_proxy.cpp | 89 | ||||
| -rw-r--r-- | src/v4l2/v4l2_camera_proxy.h | 31 | ||||
| -rw-r--r-- | src/v4l2/v4l2_compat_manager.cpp | 66 | ||||
| -rw-r--r-- | src/v4l2/v4l2_compat_manager.h | 4 |
5 files changed, 88 insertions, 106 deletions
diff --git a/src/v4l2/v4l2_camera_file.cpp b/src/v4l2/v4l2_camera_file.cpp index d3232ab2..a07679b5 100644 --- a/src/v4l2/v4l2_camera_file.cpp +++ b/src/v4l2/v4l2_camera_file.cpp @@ -17,10 +17,10 @@ V4L2CameraFile::V4L2CameraFile(int efd, bool nonBlocking, V4L2CameraProxy *proxy : proxy_(proxy), nonBlocking_(nonBlocking), efd_(efd), priority_(V4L2_PRIORITY_DEFAULT) { - proxy_->open(nonBlocking); + proxy_->open(this); } V4L2CameraFile::~V4L2CameraFile() { - proxy_->close(); + proxy_->close(this); } diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp index 86b87e37..301f1c08 100644 --- a/src/v4l2/v4l2_camera_proxy.cpp +++ b/src/v4l2/v4l2_camera_proxy.cpp @@ -23,6 +23,7 @@ #include "libcamera/internal/utils.h" #include "v4l2_camera.h" +#include "v4l2_camera_file.h" #include "v4l2_compat_manager.h" #define KERNEL_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c)) @@ -39,9 +40,9 @@ V4L2CameraProxy::V4L2CameraProxy(unsigned int index, querycap(camera); } -int V4L2CameraProxy::open(bool nonBlocking) +int V4L2CameraProxy::open(V4L2CameraFile *file) { - LOG(V4L2Compat, Debug) << "Servicing open"; + LOG(V4L2Compat, Debug) << "Servicing open fd = " << file->efd(); int ret = vcam_->open(); if (ret < 0) { @@ -49,8 +50,6 @@ int V4L2CameraProxy::open(bool nonBlocking) return -1; } - nonBlocking_ = nonBlocking; - vcam_->getStreamConfig(&streamConfig_); setFmtFromConfig(streamConfig_); sizeimage_ = calculateSizeImage(streamConfig_); @@ -60,14 +59,10 @@ int V4L2CameraProxy::open(bool nonBlocking) return 0; } -void V4L2CameraProxy::dup() +void V4L2CameraProxy::close(V4L2CameraFile *file) { - refcount_++; -} + LOG(V4L2Compat, Debug) << "Servicing close fd = " << file->efd(); -void V4L2CameraProxy::close() -{ - LOG(V4L2Compat, Debug) << "Servicing close"; if (--refcount_ > 0) return; @@ -221,9 +216,9 @@ int V4L2CameraProxy::vidioc_querycap(struct v4l2_capability *arg) return 0; } -int V4L2CameraProxy::vidioc_enum_fmt(struct v4l2_fmtdesc *arg) +int V4L2CameraProxy::vidioc_enum_fmt(V4L2CameraFile *file, struct v4l2_fmtdesc *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_enum_fmt"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_enum_fmt fd = " << file->efd(); if (!validateBufferType(arg->type) || arg->index >= streamConfig_.formats().pixelformats().size()) @@ -237,9 +232,9 @@ int V4L2CameraProxy::vidioc_enum_fmt(struct v4l2_fmtdesc *arg) return 0; } -int V4L2CameraProxy::vidioc_g_fmt(struct v4l2_format *arg) +int V4L2CameraProxy::vidioc_g_fmt(V4L2CameraFile *file, struct v4l2_format *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_g_fmt"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_g_fmt fd = " << file->efd(); if (!validateBufferType(arg->type)) return -EINVAL; @@ -275,9 +270,9 @@ void V4L2CameraProxy::tryFormat(struct v4l2_format *arg) arg->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; } -int V4L2CameraProxy::vidioc_s_fmt(struct v4l2_format *arg) +int V4L2CameraProxy::vidioc_s_fmt(V4L2CameraFile *file, struct v4l2_format *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_s_fmt"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_s_fmt fd = " << file->efd(); if (!validateBufferType(arg->type)) return -EINVAL; @@ -302,9 +297,9 @@ int V4L2CameraProxy::vidioc_s_fmt(struct v4l2_format *arg) return 0; } -int V4L2CameraProxy::vidioc_try_fmt(struct v4l2_format *arg) +int V4L2CameraProxy::vidioc_try_fmt(V4L2CameraFile *file, struct v4l2_format *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_try_fmt"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_try_fmt fd = " << file->efd(); if (!validateBufferType(arg->type)) return -EINVAL; @@ -329,11 +324,9 @@ int V4L2CameraProxy::freeBuffers() return 0; } -int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg) +int V4L2CameraProxy::vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuffers *arg) { - int ret; - - LOG(V4L2Compat, Debug) << "Servicing vidioc_reqbufs"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_reqbufs fd = " << file->efd(); if (!validateBufferType(arg->type) || !validateMemoryType(arg->memory)) @@ -347,9 +340,9 @@ int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg) return freeBuffers(); Size size(curV4L2Format_.fmt.pix.width, curV4L2Format_.fmt.pix.height); - ret = vcam_->configure(&streamConfig_, size, - v4l2ToDrm(curV4L2Format_.fmt.pix.pixelformat), - arg->count); + int ret = vcam_->configure(&streamConfig_, size, + v4l2ToDrm(curV4L2Format_.fmt.pix.pixelformat), + arg->count); if (ret < 0) return -EINVAL; @@ -396,9 +389,9 @@ int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg) return 0; } -int V4L2CameraProxy::vidioc_querybuf(struct v4l2_buffer *arg) +int V4L2CameraProxy::vidioc_querybuf(V4L2CameraFile *file, struct v4l2_buffer *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_querybuf"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_querybuf fd = " << file->efd(); if (!validateBufferType(arg->type) || arg->index >= bufferCount_) @@ -411,10 +404,10 @@ int V4L2CameraProxy::vidioc_querybuf(struct v4l2_buffer *arg) return 0; } -int V4L2CameraProxy::vidioc_qbuf(struct v4l2_buffer *arg) +int V4L2CameraProxy::vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg) { LOG(V4L2Compat, Debug) << "Servicing vidioc_qbuf, index = " - << arg->index; + << arg->index << " fd = " << file->efd(); if (!validateBufferType(arg->type) || !validateMemoryType(arg->memory) || @@ -431,15 +424,15 @@ int V4L2CameraProxy::vidioc_qbuf(struct v4l2_buffer *arg) return ret; } -int V4L2CameraProxy::vidioc_dqbuf(struct v4l2_buffer *arg) +int V4L2CameraProxy::vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_dqbuf"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_dqbuf fd = " << file->efd(); if (!validateBufferType(arg->type) || !validateMemoryType(arg->memory)) return -EINVAL; - if (!nonBlocking_) + if (!file->nonBlocking()) vcam_->bufferSema_.acquire(); else if (!vcam_->bufferSema_.tryAcquire()) return -EAGAIN; @@ -455,16 +448,16 @@ int V4L2CameraProxy::vidioc_dqbuf(struct v4l2_buffer *arg) currentBuf_ = (currentBuf_ + 1) % bufferCount_; uint64_t data; - int ret = ::read(efd_, &data, sizeof(data)); + int ret = ::read(file->efd(), &data, sizeof(data)); if (ret != sizeof(data)) LOG(V4L2Compat, Error) << "Failed to clear eventfd POLLIN"; return 0; } -int V4L2CameraProxy::vidioc_streamon(int *arg) +int V4L2CameraProxy::vidioc_streamon(V4L2CameraFile *file, int *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_streamon"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_streamon fd = " << file->efd(); if (!validateBufferType(*arg)) return -EINVAL; @@ -474,9 +467,9 @@ int V4L2CameraProxy::vidioc_streamon(int *arg) return vcam_->streamOn(); } -int V4L2CameraProxy::vidioc_streamoff(int *arg) +int V4L2CameraProxy::vidioc_streamoff(V4L2CameraFile *file, int *arg) { - LOG(V4L2Compat, Debug) << "Servicing vidioc_streamoff"; + LOG(V4L2Compat, Debug) << "Servicing vidioc_streamoff fd = " << file->efd(); if (!validateBufferType(*arg)) return -EINVAL; @@ -489,7 +482,7 @@ int V4L2CameraProxy::vidioc_streamoff(int *arg) return ret; } -int V4L2CameraProxy::ioctl(unsigned long request, void *arg) +int V4L2CameraProxy::ioctl(V4L2CameraFile *file, unsigned long request, void *arg) { int ret; switch (request) { @@ -497,34 +490,34 @@ int V4L2CameraProxy::ioctl(unsigned long request, void *arg) ret = vidioc_querycap(static_cast<struct v4l2_capability *>(arg)); break; case VIDIOC_ENUM_FMT: - ret = vidioc_enum_fmt(static_cast<struct v4l2_fmtdesc *>(arg)); + ret = vidioc_enum_fmt(file, static_cast<struct v4l2_fmtdesc *>(arg)); break; case VIDIOC_G_FMT: - ret = vidioc_g_fmt(static_cast<struct v4l2_format *>(arg)); + ret = vidioc_g_fmt(file, static_cast<struct v4l2_format *>(arg)); break; case VIDIOC_S_FMT: - ret = vidioc_s_fmt(static_cast<struct v4l2_format *>(arg)); + ret = vidioc_s_fmt(file, static_cast<struct v4l2_format *>(arg)); break; case VIDIOC_TRY_FMT: - ret = vidioc_try_fmt(static_cast<struct v4l2_format *>(arg)); + ret = vidioc_try_fmt(file, static_cast<struct v4l2_format *>(arg)); break; case VIDIOC_REQBUFS: - ret = vidioc_reqbufs(static_cast<struct v4l2_requestbuffers *>(arg)); + ret = vidioc_reqbufs(file, static_cast<struct v4l2_requestbuffers *>(arg)); break; case VIDIOC_QUERYBUF: - ret = vidioc_querybuf(static_cast<struct v4l2_buffer *>(arg)); + ret = vidioc_querybuf(file, static_cast<struct v4l2_buffer *>(arg)); break; case VIDIOC_QBUF: - ret = vidioc_qbuf(static_cast<struct v4l2_buffer *>(arg)); + ret = vidioc_qbuf(file, static_cast<struct v4l2_buffer *>(arg)); break; case VIDIOC_DQBUF: - ret = vidioc_dqbuf(static_cast<struct v4l2_buffer *>(arg)); + ret = vidioc_dqbuf(file, static_cast<struct v4l2_buffer *>(arg)); break; case VIDIOC_STREAMON: - ret = vidioc_streamon(static_cast<int *>(arg)); + ret = vidioc_streamon(file, static_cast<int *>(arg)); break; case VIDIOC_STREAMOFF: - ret = vidioc_streamoff(static_cast<int *>(arg)); + ret = vidioc_streamoff(file, static_cast<int *>(arg)); break; default: ret = -ENOTTY; diff --git a/src/v4l2/v4l2_camera_proxy.h b/src/v4l2/v4l2_camera_proxy.h index 27d3e507..b2197ef8 100644 --- a/src/v4l2/v4l2_camera_proxy.h +++ b/src/v4l2/v4l2_camera_proxy.h @@ -21,20 +21,20 @@ using namespace libcamera; +class V4L2CameraFile; + class V4L2CameraProxy { public: V4L2CameraProxy(unsigned int index, std::shared_ptr<Camera> camera); - int open(bool nonBlocking); - void dup(); - void close(); + int open(V4L2CameraFile *file); + void close(V4L2CameraFile *file); void *mmap(void *addr, size_t length, int prot, int flags, off64_t offset); int munmap(void *addr, size_t length); - int ioctl(unsigned long request, void *arg); - void bind(int fd); + int ioctl(V4L2CameraFile *file, unsigned long request, void *arg); private: bool validateBufferType(uint32_t type); @@ -47,16 +47,16 @@ private: int freeBuffers(); int vidioc_querycap(struct v4l2_capability *arg); - int vidioc_enum_fmt(struct v4l2_fmtdesc *arg); - int vidioc_g_fmt(struct v4l2_format *arg); - int vidioc_s_fmt(struct v4l2_format *arg); - int vidioc_try_fmt(struct v4l2_format *arg); - int vidioc_reqbufs(struct v4l2_requestbuffers *arg); - int vidioc_querybuf(struct v4l2_buffer *arg); - int vidioc_qbuf(struct v4l2_buffer *arg); - int vidioc_dqbuf(struct v4l2_buffer *arg); - int vidioc_streamon(int *arg); - int vidioc_streamoff(int *arg); + int vidioc_enum_fmt(V4L2CameraFile *file, struct v4l2_fmtdesc *arg); + int vidioc_g_fmt(V4L2CameraFile *file, struct v4l2_format *arg); + int vidioc_s_fmt(V4L2CameraFile *file, struct v4l2_format *arg); + int vidioc_try_fmt(V4L2CameraFile *file, struct v4l2_format *arg); + int vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuffers *arg); + int vidioc_querybuf(V4L2CameraFile *file, struct v4l2_buffer *arg); + int vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg); + int vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg); + int vidioc_streamon(V4L2CameraFile *file, int *arg); + int vidioc_streamoff(V4L2CameraFile *file, int *arg); static unsigned int bplMultiplier(uint32_t format); static unsigned int imageSize(uint32_t format, unsigned int width, @@ -67,7 +67,6 @@ private: unsigned int refcount_; unsigned int index_; - bool nonBlocking_; struct v4l2_format curV4L2Format_; StreamConfiguration streamConfig_; diff --git a/src/v4l2/v4l2_compat_manager.cpp b/src/v4l2/v4l2_compat_manager.cpp index 8da33164..90c0f012 100644 --- a/src/v4l2/v4l2_compat_manager.cpp +++ b/src/v4l2/v4l2_compat_manager.cpp @@ -24,6 +24,8 @@ #include "libcamera/internal/log.h" +#include "v4l2_camera_file.h" + using namespace libcamera; LOG_DEFINE_CATEGORY(V4L2Compat) @@ -49,7 +51,7 @@ V4L2CompatManager::V4L2CompatManager() V4L2CompatManager::~V4L2CompatManager() { - devices_.clear(); + files_.clear(); mmaps_.clear(); if (cm_) { @@ -95,13 +97,13 @@ V4L2CompatManager *V4L2CompatManager::instance() return &instance; } -V4L2CameraProxy *V4L2CompatManager::getProxy(int fd) +std::shared_ptr<V4L2CameraFile> V4L2CompatManager::cameraFile(int fd) { - auto device = devices_.find(fd); - if (device == devices_.end()) + auto file = files_.find(fd); + if (file == files_.end()) return nullptr; - return device->second; + return file->second; } int V4L2CompatManager::getCameraIndex(int fd) @@ -148,25 +150,14 @@ int V4L2CompatManager::openat(int dirfd, const char *path, int oflag, mode_t mod fops_.close(fd); - unsigned int camera_index = static_cast<unsigned int>(ret); - - V4L2CameraProxy *proxy = proxies_[camera_index].get(); - ret = proxy->open(oflag & O_NONBLOCK); - if (ret < 0) - return ret; - int efd = eventfd(0, EFD_SEMAPHORE | ((oflag & O_CLOEXEC) ? EFD_CLOEXEC : 0) | ((oflag & O_NONBLOCK) ? EFD_NONBLOCK : 0)); - if (efd < 0) { - int err = errno; - proxy->close(); - errno = err; + if (efd < 0) return efd; - } - proxy->bind(efd); - devices_.emplace(efd, proxy); + V4L2CameraProxy *proxy = proxies_[ret].get(); + files_.emplace(efd, std::make_shared<V4L2CameraFile>(efd, oflag & O_NONBLOCK, proxy)); return efd; } @@ -177,40 +168,39 @@ int V4L2CompatManager::dup(int oldfd) if (newfd < 0) return newfd; - auto device = devices_.find(oldfd); - if (device != devices_.end()) { - V4L2CameraProxy *proxy = device->second; - devices_[newfd] = proxy; - proxy->dup(); - } + auto file = files_.find(oldfd); + if (file != files_.end()) + files_[newfd] = file->second; return newfd; } int V4L2CompatManager::close(int fd) { - V4L2CameraProxy *proxy = getProxy(fd); - if (proxy) { - proxy->close(); - devices_.erase(fd); - return 0; - } + auto file = files_.find(fd); + if (file != files_.end()) + files_.erase(file); + /* We still need to close the eventfd. */ return fops_.close(fd); } void *V4L2CompatManager::mmap(void *addr, size_t length, int prot, int flags, int fd, off64_t offset) { - V4L2CameraProxy *proxy = getProxy(fd); - if (!proxy) + std::shared_ptr<V4L2CameraFile> file = cameraFile(fd); + if (!file) return fops_.mmap(addr, length, prot, flags, fd, offset); - void *map = proxy->mmap(addr, length, prot, flags, offset); + void *map = file->proxy()->mmap(addr, length, prot, flags, offset); if (map == MAP_FAILED) return map; - mmaps_[map] = proxy; + /* + * Map to V4L2CameraProxy directly to prevent adding more references + * to V4L2CameraFile. + */ + mmaps_[map] = file->proxy(); return map; } @@ -233,9 +223,9 @@ int V4L2CompatManager::munmap(void *addr, size_t length) int V4L2CompatManager::ioctl(int fd, unsigned long request, void *arg) { - V4L2CameraProxy *proxy = getProxy(fd); - if (!proxy) + std::shared_ptr<V4L2CameraFile> file = cameraFile(fd); + if (!file) return fops_.ioctl(fd, request, arg); - return proxy->ioctl(request, arg); + return file->proxy()->ioctl(file.get(), request, arg); } diff --git a/src/v4l2/v4l2_compat_manager.h b/src/v4l2/v4l2_compat_manager.h index 3d4e512e..bc548ab2 100644 --- a/src/v4l2/v4l2_compat_manager.h +++ b/src/v4l2/v4l2_compat_manager.h @@ -44,7 +44,6 @@ public: static V4L2CompatManager *instance(); - V4L2CameraProxy *getProxy(int fd); const FileOperations &fops() const { return fops_; } int openat(int dirfd, const char *path, int oflag, mode_t mode); @@ -62,13 +61,14 @@ private: int start(); int getCameraIndex(int fd); + std::shared_ptr<V4L2CameraFile> cameraFile(int fd); FileOperations fops_; CameraManager *cm_; std::vector<std::unique_ptr<V4L2CameraProxy>> proxies_; - std::map<int, V4L2CameraProxy *> devices_; + std::map<int, std::shared_ptr<V4L2CameraFile>> files_; std::map<void *, V4L2CameraProxy *> mmaps_; }; |