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libcamera: ipu3: Implement camera start/stop

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Start and stop video devices in the pipeline.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi 2019-02-28 14:19:37 +01:00
parent 4f370e1001
commit 88316d63f0
1 changed files with 97 additions and 7 deletions
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104
src/libcamera/pipeline/ipu3/ipu3.cpp
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@ -70,6 +70,9 @@ public:
int exportBuffers(ImgUOutput *output, BufferPool *pool);
void freeBuffers();
int start();
int stop();
unsigned int index_;
std::string name_;
MediaDevice *media_;
@ -109,6 +112,9 @@ public:
BufferPool *exportBuffers();
void freeBuffers();
int start();
int stop();
static int mediaBusToFormat(unsigned int code);
V4L2Device *output_;
@ -335,25 +341,43 @@ int PipelineHandlerIPU3::freeBuffers(Camera *camera, Stream *stream)
int PipelineHandlerIPU3::start(Camera *camera)
{
IPU3CameraData *data = cameraData(camera);
V4L2Device *cio2 = data->cio2_.output_;
CIO2Device *cio2 = &data->cio2_;
ImgUDevice *imgu = data->imgu_;
int ret;
ret = cio2->streamOn();
/*
* Start the ImgU video devices, buffers will be queued to the
* ImgU output and viewfinder when requests will be queued.
*/
ret = cio2->start();
if (ret)
goto error;
ret = imgu->start();
if (ret) {
LOG(IPU3, Info) << "Failed to start camera " << camera->name();
return ret;
imgu->stop();
cio2->stop();
goto error;
}
return 0;
error:
LOG(IPU3, Error) << "Failed to start camera " << camera->name();
return ret;
}
void PipelineHandlerIPU3::stop(Camera *camera)
{
IPU3CameraData *data = cameraData(camera);
V4L2Device *cio2 = data->cio2_.output_;
int ret;
if (cio2->streamOff())
LOG(IPU3, Info) << "Failed to stop camera " << camera->name();
ret = data->cio2_.stop();
ret |= data->imgu_->stop();
if (ret)
LOG(IPU3, Warning) << "Failed to stop camera "
<< camera->name();
PipelineHandler::stop(camera);
}
@ -764,6 +788,50 @@ void ImgUDevice::freeBuffers()
LOG(IPU3, Error) << "Failed to release ImgU input buffers";
}
int ImgUDevice::start()
{
int ret;
/* Start the ImgU video devices. */
ret = output_.dev->streamOn();
if (ret) {
LOG(IPU3, Error) << "Failed to start ImgU output";
return ret;
}
ret = viewfinder_.dev->streamOn();
if (ret) {
LOG(IPU3, Error) << "Failed to start ImgU viewfinder";
return ret;
}
ret = stat_.dev->streamOn();
if (ret) {
LOG(IPU3, Error) << "Failed to start ImgU stat";
return ret;
}
ret = input_->streamOn();
if (ret) {
LOG(IPU3, Error) << "Failed to start ImgU input";
return ret;
}
return 0;
}
int ImgUDevice::stop()
{
int ret;
ret = output_.dev->streamOff();
ret |= viewfinder_.dev->streamOff();
ret |= stat_.dev->streamOff();
ret |= input_->streamOff();
return ret;
}
/*------------------------------------------------------------------------------
* CIO2 Device
*/
@ -957,6 +1025,28 @@ void CIO2Device::freeBuffers()
LOG(IPU3, Error) << "Failed to release CIO2 buffers";
}
int CIO2Device::start()
{
int ret;
for (Buffer &buffer : pool_.buffers()) {
ret = output_->queueBuffer(&buffer);
if (ret)
return ret;
}
ret = output_->streamOn();
if (ret)
return ret;
return 0;
}
int CIO2Device::stop()
{
return output_->streamOff();
}
int CIO2Device::mediaBusToFormat(unsigned int code)
{
switch (code) {