diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/v4l2_device.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/libcamera/v4l2_device.cpp b/src/libcamera/v4l2_device.cpp index e9709906..77866efb 100644 --- a/src/libcamera/v4l2_device.cpp +++ b/src/libcamera/v4l2_device.cpp @@ -299,7 +299,15 @@ int V4L2Device::open() ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : V4L2_BUF_TYPE_VIDEO_OUTPUT; - fdEvent_ = new EventNotifier(fd_, EventNotifier::Read); + /* + * We wait for Read notifications on CAPTURE devices (POLLIN), and + * Write notifications for OUTPUT devices (POLLOUT). + */ + if (caps_.isCapture()) + fdEvent_ = new EventNotifier(fd_, EventNotifier::Read); + else + fdEvent_ = new EventNotifier(fd_, EventNotifier::Write); + fdEvent_->activated.connect(this, &V4L2Device::bufferAvailable); fdEvent_->setEnabled(false); @@ -677,6 +685,13 @@ int V4L2Device::queueBuffer(Buffer *buffer) buf.m.planes = planes; } + if (V4L2_TYPE_IS_OUTPUT(bufferType_)) { + buf.bytesused = buffer->bytesused_; + buf.sequence = buffer->sequence_; + buf.timestamp.tv_sec = buffer->timestamp_ / 1000000000; + buf.timestamp.tv_usec = (buffer->timestamp_ / 1000) % 1000000; + } + LOG(V4L2, Debug) << "Queueing buffer " << buf.index; ret = ioctl(fd_, VIDIOC_QBUF, &buf); |