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Diffstat (limited to 'src/libcamera/v4l2_videodevice.cpp')
-rw-r--r--src/libcamera/v4l2_videodevice.cpp100
1 files changed, 29 insertions, 71 deletions
diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 0e70498c..2de3751f 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -30,7 +30,7 @@
*/
namespace libcamera {
-LOG_DEFINE_CATEGORY(V4L2)
+LOG_DECLARE_CATEGORY(V4L2)
/**
* \struct V4L2Capability
@@ -270,7 +270,7 @@ const std::string V4L2DeviceFormat::toString() const
* \param[in] deviceNode The file-system path to the video device node
*/
V4L2VideoDevice::V4L2VideoDevice(const std::string &deviceNode)
- : deviceNode_(deviceNode), fd_(-1), bufferPool_(nullptr),
+ : V4L2Device(deviceNode), bufferPool_(nullptr),
queuedBuffersCount_(0), fdEvent_(nullptr)
{
/*
@@ -305,23 +305,12 @@ int V4L2VideoDevice::open()
{
int ret;
- if (isOpen()) {
- LOG(V4L2, Error) << "Device already open";
- return -EBUSY;
- }
-
- ret = ::open(deviceNode_.c_str(), O_RDWR | O_NONBLOCK);
- if (ret < 0) {
- ret = -errno;
- LOG(V4L2, Error)
- << "Failed to open V4L2 device: " << strerror(-ret);
+ ret = V4L2Device::open(O_RDWR | O_NONBLOCK);
+ if (ret < 0)
return ret;
- }
- fd_ = ret;
- ret = ioctl(fd_, VIDIOC_QUERYCAP, &caps_);
+ ret = ioctl(VIDIOC_QUERYCAP, &caps_);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to query device capabilities: "
<< strerror(-ret);
@@ -342,20 +331,20 @@ int V4L2VideoDevice::open()
* (POLLIN), and write notifications for OUTPUT devices (POLLOUT).
*/
if (caps_.isVideoCapture()) {
- fdEvent_ = new EventNotifier(fd_, EventNotifier::Read);
+ fdEvent_ = new EventNotifier(fd(), EventNotifier::Read);
bufferType_ = caps_.isMultiplanar()
? V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
: V4L2_BUF_TYPE_VIDEO_CAPTURE;
} else if (caps_.isVideoOutput()) {
- fdEvent_ = new EventNotifier(fd_, EventNotifier::Write);
+ fdEvent_ = new EventNotifier(fd(), EventNotifier::Write);
bufferType_ = caps_.isMultiplanar()
? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
: V4L2_BUF_TYPE_VIDEO_OUTPUT;
} else if (caps_.isMetaCapture()) {
- fdEvent_ = new EventNotifier(fd_, EventNotifier::Read);
+ fdEvent_ = new EventNotifier(fd(), EventNotifier::Read);
bufferType_ = V4L2_BUF_TYPE_META_CAPTURE;
} else if (caps_.isMetaOutput()) {
- fdEvent_ = new EventNotifier(fd_, EventNotifier::Write);
+ fdEvent_ = new EventNotifier(fd(), EventNotifier::Write);
bufferType_ = V4L2_BUF_TYPE_META_OUTPUT;
} else {
LOG(V4L2, Error) << "Device is not a supported type";
@@ -369,27 +358,17 @@ int V4L2VideoDevice::open()
}
/**
- * \brief Check if device is successfully opened
- * \return True if the device is open, false otherwise
- */
-bool V4L2VideoDevice::isOpen() const
-{
- return fd_ != -1;
-}
-
-/**
* \brief Close the device, releasing any resources acquired by open()
*/
void V4L2VideoDevice::close()
{
- if (fd_ < 0)
+ if (!isOpen())
return;
releaseBuffers();
delete fdEvent_;
- ::close(fd_);
- fd_ = -1;
+ V4L2Device::close();
}
/**
@@ -410,15 +389,9 @@ void V4L2VideoDevice::close()
* \return The string containing the device location
*/
-/**
- * \fn V4L2VideoDevice::deviceNode()
- * \brief Retrieve the video device node path
- * \return The video device device node path
- */
-
std::string V4L2VideoDevice::logPrefix() const
{
- return deviceNode_ + (V4L2_TYPE_IS_OUTPUT(bufferType_) ? "[out]" : "[cap]");
+ return deviceNode() + (V4L2_TYPE_IS_OUTPUT(bufferType_) ? "[out]" : "[cap]");
}
/**
@@ -462,9 +435,8 @@ int V4L2VideoDevice::getFormatMeta(V4L2DeviceFormat *format)
int ret;
v4l2Format.type = bufferType_;
- ret = ioctl(fd_, VIDIOC_G_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_G_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to get format: " << strerror(-ret);
return ret;
}
@@ -488,9 +460,8 @@ int V4L2VideoDevice::setFormatMeta(V4L2DeviceFormat *format)
v4l2Format.type = bufferType_;
pix->dataformat = format->fourcc;
pix->buffersize = format->planes[0].size;
- ret = ioctl(fd_, VIDIOC_S_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_S_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to set format: " << strerror(-ret);
return ret;
}
@@ -516,9 +487,8 @@ int V4L2VideoDevice::getFormatMultiplane(V4L2DeviceFormat *format)
int ret;
v4l2Format.type = bufferType_;
- ret = ioctl(fd_, VIDIOC_G_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_G_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to get format: " << strerror(-ret);
return ret;
}
@@ -554,9 +524,8 @@ int V4L2VideoDevice::setFormatMultiplane(V4L2DeviceFormat *format)
pix->plane_fmt[i].sizeimage = format->planes[i].size;
}
- ret = ioctl(fd_, VIDIOC_S_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_S_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to set format: " << strerror(-ret);
return ret;
}
@@ -584,9 +553,8 @@ int V4L2VideoDevice::getFormatSingleplane(V4L2DeviceFormat *format)
int ret;
v4l2Format.type = bufferType_;
- ret = ioctl(fd_, VIDIOC_G_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_G_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to get format: " << strerror(-ret);
return ret;
}
@@ -613,9 +581,8 @@ int V4L2VideoDevice::setFormatSingleplane(V4L2DeviceFormat *format)
pix->pixelformat = format->fourcc;
pix->bytesperline = format->planes[0].bpl;
pix->field = V4L2_FIELD_NONE;
- ret = ioctl(fd_, VIDIOC_S_FMT, &v4l2Format);
+ ret = ioctl(VIDIOC_S_FMT, &v4l2Format);
if (ret) {
- ret = -errno;
LOG(V4L2, Error) << "Unable to set format: " << strerror(-ret);
return ret;
}
@@ -670,9 +637,8 @@ int V4L2VideoDevice::requestBuffers(unsigned int count)
rb.type = bufferType_;
rb.memory = memoryType_;
- ret = ioctl(fd_, VIDIOC_REQBUFS, &rb);
+ ret = ioctl(VIDIOC_REQBUFS, &rb);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Unable to request " << count << " buffers: "
<< strerror(-ret);
@@ -722,9 +688,8 @@ int V4L2VideoDevice::exportBuffers(BufferPool *pool)
buf.length = VIDEO_MAX_PLANES;
buf.m.planes = planes;
- ret = ioctl(fd_, VIDIOC_QUERYBUF, &buf);
+ ret = ioctl(VIDIOC_QUERYBUF, &buf);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Unable to query buffer " << i << ": "
<< strerror(-ret);
@@ -775,9 +740,8 @@ int V4L2VideoDevice::createPlane(Buffer *buffer, unsigned int planeIndex,
expbuf.plane = planeIndex;
expbuf.flags = O_RDWR;
- ret = ioctl(fd_, VIDIOC_EXPBUF, &expbuf);
+ ret = ioctl(VIDIOC_EXPBUF, &expbuf);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to export buffer: " << strerror(-ret);
return ret;
@@ -801,15 +765,14 @@ std::vector<unsigned int> V4L2VideoDevice::enumPixelformats()
pixelformatEnum.index = index;
pixelformatEnum.type = bufferType_;
- ret = ioctl(fd_, VIDIOC_ENUM_FMT, &pixelformatEnum);
+ ret = ioctl(VIDIOC_ENUM_FMT, &pixelformatEnum);
if (ret)
break;
formats.push_back(pixelformatEnum.pixelformat);
}
- if (ret && errno != EINVAL) {
- ret = -errno;
+ if (ret && ret != -EINVAL) {
LOG(V4L2, Error)
<< "Unable to enumerate pixel formats: "
<< strerror(-ret);
@@ -829,7 +792,7 @@ std::vector<SizeRange> V4L2VideoDevice::enumSizes(unsigned int pixelFormat)
frameSize.index = index;
frameSize.pixel_format = pixelFormat;
- ret = ioctl(fd_, VIDIOC_ENUM_FRAMESIZES, &frameSize);
+ ret = ioctl(VIDIOC_ENUM_FRAMESIZES, &frameSize);
if (ret)
break;
@@ -867,8 +830,7 @@ std::vector<SizeRange> V4L2VideoDevice::enumSizes(unsigned int pixelFormat)
}
}
- if (ret && errno != EINVAL) {
- ret = -errno;
+ if (ret && ret != -EINVAL) {
LOG(V4L2, Error)
<< "Unable to enumerate frame sizes: "
<< strerror(-ret);
@@ -969,9 +931,8 @@ int V4L2VideoDevice::queueBuffer(Buffer *buffer)
LOG(V4L2, Debug) << "Queueing buffer " << buf.index;
- ret = ioctl(fd_, VIDIOC_QBUF, &buf);
+ ret = ioctl(VIDIOC_QBUF, &buf);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to queue buffer " << buf.index << ": "
<< strerror(-ret);
@@ -1006,9 +967,8 @@ Buffer *V4L2VideoDevice::dequeueBuffer()
buf.m.planes = planes;
}
- ret = ioctl(fd_, VIDIOC_DQBUF, &buf);
+ ret = ioctl(VIDIOC_DQBUF, &buf);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to dequeue buffer: " << strerror(-ret);
return nullptr;
@@ -1066,9 +1026,8 @@ int V4L2VideoDevice::streamOn()
{
int ret;
- ret = ioctl(fd_, VIDIOC_STREAMON, &bufferType_);
+ ret = ioctl(VIDIOC_STREAMON, &bufferType_);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to start streaming: " << strerror(-ret);
return ret;
@@ -1089,9 +1048,8 @@ int V4L2VideoDevice::streamOff()
{
int ret;
- ret = ioctl(fd_, VIDIOC_STREAMOFF, &bufferType_);
+ ret = ioctl(VIDIOC_STREAMOFF, &bufferType_);
if (ret < 0) {
- ret = -errno;
LOG(V4L2, Error)
<< "Failed to stop streaming: " << strerror(-ret);
return ret;
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-04 21:26:43 +0000