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Diffstat (limited to 'src/v4l2/v4l2_camera.cpp')
-rw-r--r--src/v4l2/v4l2_camera.cpp109
1 files changed, 49 insertions, 60 deletions
diff --git a/src/v4l2/v4l2_camera.cpp b/src/v4l2/v4l2_camera.cpp
index 3590730f..4545483c 100644
--- a/src/v4l2/v4l2_camera.cpp
+++ b/src/v4l2/v4l2_camera.cpp
@@ -34,23 +34,21 @@ V4L2Camera::~V4L2Camera()
camera_->release();
}
-void V4L2Camera::open(int *ret)
+int V4L2Camera::open()
{
/* \todo Support multiple open. */
if (camera_->acquire() < 0) {
LOG(V4L2Compat, Error) << "Failed to acquire camera";
- *ret = -EINVAL;
- return;
+ return -EINVAL;
}
config_ = camera_->generateConfiguration({ StreamRole::Viewfinder });
if (!config_) {
camera_->release();
- *ret = -EINVAL;
- return;
+ return -EINVAL;
}
- *ret = 0;
+ return 0;
}
void V4L2Camera::close()
@@ -92,9 +90,9 @@ void V4L2Camera::requestComplete(Request *request)
bufferSema_.release();
}
-void V4L2Camera::configure(int *ret, StreamConfiguration *streamConfigOut,
- const Size &size, PixelFormat pixelformat,
- unsigned int bufferCount)
+int V4L2Camera::configure(StreamConfiguration *streamConfigOut,
+ const Size &size, PixelFormat pixelformat,
+ unsigned int bufferCount)
{
StreamConfiguration &streamConfig = config_->at(0);
streamConfig.size.width = size.width;
@@ -106,8 +104,7 @@ void V4L2Camera::configure(int *ret, StreamConfiguration *streamConfigOut,
CameraConfiguration::Status validation = config_->validate();
if (validation == CameraConfiguration::Invalid) {
LOG(V4L2Compat, Debug) << "Configuration invalid";
- *ret = -EINVAL;
- return;
+ return -EINVAL;
}
if (validation == CameraConfiguration::Adjusted)
LOG(V4L2Compat, Debug) << "Configuration adjusted";
@@ -115,24 +112,25 @@ void V4L2Camera::configure(int *ret, StreamConfiguration *streamConfigOut,
LOG(V4L2Compat, Debug) << "Validated configuration is: "
<< streamConfig.toString();
- *ret = camera_->configure(config_.get());
- if (*ret < 0)
- return;
+ int ret = camera_->configure(config_.get());
+ if (ret < 0)
+ return ret;
*streamConfigOut = config_->at(0);
+
+ return 0;
}
-void V4L2Camera::mmap(void **ret, unsigned int index)
+void *V4L2Camera::mmap(unsigned int index)
{
Stream *stream = *camera_->streams().begin();
- *ret = stream->buffers()[index].planes()[0].mem();
+ return stream->buffers()[index].planes()[0].mem();
}
-void V4L2Camera::allocBuffers(int *ret, unsigned int count)
+int V4L2Camera::allocBuffers(unsigned int count)
{
- *ret = camera_->allocateBuffers();
- if (*ret == -EACCES)
- *ret = -EBUSY;
+ int ret = camera_->allocateBuffers();
+ return ret == -EACCES ? -EBUSY : ret;
}
void V4L2Camera::freeBuffers()
@@ -140,85 +138,76 @@ void V4L2Camera::freeBuffers()
camera_->freeBuffers();
}
-void V4L2Camera::streamOn(int *ret)
+int V4L2Camera::streamOn()
{
- *ret = 0;
-
if (isRunning_)
- return;
+ return 0;
+
+ int ret = camera_->start();
+ if (ret < 0)
+ return ret == -EACCES ? -EBUSY : ret;
- *ret = camera_->start();
- if (*ret < 0) {
- if (*ret == -EACCES)
- *ret = -EBUSY;
- return;
- }
isRunning_ = true;
for (std::unique_ptr<Request> &req : pendingRequests_) {
/* \todo What should we do if this returns -EINVAL? */
- *ret = camera_->queueRequest(req.release());
- if (*ret < 0) {
- if (*ret == -EACCES)
- *ret = -EBUSY;
- return;
- }
+ ret = camera_->queueRequest(req.release());
+ if (ret < 0)
+ return ret == -EACCES ? -EBUSY : ret;
}
pendingRequests_.clear();
+
+ return 0;
}
-void V4L2Camera::streamOff(int *ret)
+int V4L2Camera::streamOff()
{
- *ret = 0;
-
/* \todo Restore buffers to reqbufs state? */
if (!isRunning_)
- return;
+ return 0;
+
+ int ret = camera_->stop();
+ if (ret < 0)
+ return ret == -EACCES ? -EBUSY : ret;
- *ret = camera_->stop();
- if (*ret < 0) {
- if (*ret == -EACCES)
- *ret = -EBUSY;
- return;
- }
isRunning_ = false;
+
+ return 0;
}
-void V4L2Camera::qbuf(int *ret, unsigned int index)
+int V4L2Camera::qbuf(unsigned int index)
{
Stream *stream = config_->at(0).stream();
std::unique_ptr<Buffer> buffer = stream->createBuffer(index);
if (!buffer) {
LOG(V4L2Compat, Error) << "Can't create buffer";
- *ret = -ENOMEM;
- return;
+ return -ENOMEM;
}
std::unique_ptr<Request> request =
std::unique_ptr<Request>(camera_->createRequest());
if (!request) {
LOG(V4L2Compat, Error) << "Can't create request";
- *ret = -ENOMEM;
- return;
+ return -ENOMEM;
}
- *ret = request->addBuffer(std::move(buffer));
- if (*ret < 0) {
+ int ret = request->addBuffer(std::move(buffer));
+ if (ret < 0) {
LOG(V4L2Compat, Error) << "Can't set buffer for request";
- *ret = -ENOMEM;
- return;
+ return -ENOMEM;
}
if (!isRunning_) {
pendingRequests_.push_back(std::move(request));
- return;
+ return 0;
}
- *ret = camera_->queueRequest(request.release());
- if (*ret < 0) {
+ ret = camera_->queueRequest(request.release());
+ if (ret < 0) {
LOG(V4L2Compat, Error) << "Can't queue request";
- if (*ret == -EACCES)
- *ret = -EBUSY;
+ return ret == -EACCES ? -EBUSY : ret;
}
+
+ return 0;
}