diff options
Diffstat (limited to 'src/v4l2/v4l2_camera_proxy.cpp')
| -rw-r--r-- | src/v4l2/v4l2_camera_proxy.cpp | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp index ec6daac6..f3470a6d 100644 --- a/src/v4l2/v4l2_camera_proxy.cpp +++ b/src/v4l2/v4l2_camera_proxy.cpp @@ -559,6 +559,38 @@ int V4L2CameraProxy::vidioc_querybuf(V4L2CameraFile *file, struct v4l2_buffer *a return 0; } +int V4L2CameraProxy::vidioc_prepare_buf(V4L2CameraFile *file, struct v4l2_buffer *arg) +{ + LOG(V4L2Compat, Debug) + << "[" << file->description() << "] " << __func__ + << "(index=" << arg->index << ")"; + + if (!hasOwnership(file)) + return -EBUSY; + + if (arg->index >= bufferCount_) + return -EINVAL; + + if (arg->flags & V4L2_BUF_FLAG_REQUEST_FD) + return -EINVAL; + + if (!validateBufferType(arg->type) || + !validateMemoryType(arg->memory)) + return -EINVAL; + + struct v4l2_buffer &buffer = buffers_[arg->index]; + + if (buffer.flags & V4L2_BUF_FLAG_QUEUED || + buffer.flags & V4L2_BUF_FLAG_PREPARED) + return -EINVAL; + + buffer.flags |= V4L2_BUF_FLAG_PREPARED; + + arg->flags = buffer.flags; + + return 0; +} + int V4L2CameraProxy::vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg) { LOG(V4L2Compat, Debug) @@ -627,7 +659,7 @@ int V4L2CameraProxy::vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg, struct v4l2_buffer &buf = buffers_[currentBuf_]; - buf.flags &= ~(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE); + buf.flags &= ~(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_PREPARED); buf.length = sizeimage_; *arg = buf; @@ -729,6 +761,7 @@ const std::set<unsigned long> V4L2CameraProxy::supportedIoctls_ = { VIDIOC_S_INPUT, VIDIOC_REQBUFS, VIDIOC_QUERYBUF, + VIDIOC_PREPARE_BUF, VIDIOC_QBUF, VIDIOC_DQBUF, VIDIOC_EXPBUF, |