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libcamera: pipeline_handler: Return unique_ptr from generateConfiguration()

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The PipelineHandler::generateConfiguration() function allocates a
CameraConfiguration instance and returns it. The ownership of the
instance is transferred to the caller. This is a perfect match for a
std::unique_ptr<>, which the Camera::generateConfiguration() function
already returns. Update PipelineHandler::generateConfiguration() to
match it. This fixes a memory leak in one of the error return paths in
the IPU3 pipeline handler.

While at it, update the Camera::generateConfiguration() function
documentation to drop the sentence that describes the ownership
transfer, as that is implied by usage of std::unique_ptr<>.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2022-10-22 23:53:26 +03:00
parent 00b650b6b8
commit a07968bed2
9 changed files with 38 additions and 34 deletions
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2
include/libcamera/internal/pipeline_handler.h
View file

@ -48,7 +48,7 @@ public:
bool acquire();
void release();
virtual CameraConfiguration *generateConfiguration(Camera *camera,
virtual std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) = 0;
virtual int configure(Camera *camera, CameraConfiguration *config) = 0;

8
src/libcamera/camera.cpp
View file

@ -934,8 +934,7 @@ const std::set<Stream *> &Camera::streams() const
* \context This function is \threadsafe.
*
* \return A CameraConfiguration if the requested roles can be satisfied, or a
* null pointer otherwise. The ownership of the returned configuration is
* passed to the caller.
* null pointer otherwise.
*/
std::unique_ptr<CameraConfiguration> Camera::generateConfiguration(const StreamRoles &roles)
{
@ -949,7 +948,8 @@ std::unique_ptr<CameraConfiguration> Camera::generateConfiguration(const StreamR
if (roles.size() > streams().size())
return nullptr;
CameraConfiguration *config = d->pipe_->generateConfiguration(this, roles);
std::unique_ptr<CameraConfiguration> config =
d->pipe_->generateConfiguration(this, roles);
if (!config) {
LOG(Camera, Debug)
<< "Pipeline handler failed to generate configuration";
@ -966,7 +966,7 @@ std::unique_ptr<CameraConfiguration> Camera::generateConfiguration(const StreamR
LOG(Camera, Debug) << msg.str();
return std::unique_ptr<CameraConfiguration>(config);
return config;
}
/**

10
src/libcamera/pipeline/ipu3/ipu3.cpp
View file

@ -136,7 +136,7 @@ public:
PipelineHandlerIPU3(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
@ -424,11 +424,12 @@ PipelineHandlerIPU3::PipelineHandlerIPU3(CameraManager *manager)
{
}
CameraConfiguration *PipelineHandlerIPU3::generateConfiguration(Camera *camera,
const StreamRoles &roles)
std::unique_ptr<CameraConfiguration>
PipelineHandlerIPU3::generateConfiguration(Camera *camera, const StreamRoles &roles)
{
IPU3CameraData *data = cameraData(camera);
IPU3CameraConfiguration *config = new IPU3CameraConfiguration(data);
std::unique_ptr<IPU3CameraConfiguration> config =
std::make_unique<IPU3CameraConfiguration>(data);
if (roles.empty())
return config;
@ -494,7 +495,6 @@ CameraConfiguration *PipelineHandlerIPU3::generateConfiguration(Camera *camera,
default:
LOG(IPU3, Error)
<< "Requested stream role not supported: " << role;
delete config;
return nullptr;
}

12
src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
View file

@ -323,7 +323,8 @@ class PipelineHandlerRPi : public PipelineHandler
public:
PipelineHandlerRPi(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera, const StreamRoles &roles) override;
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
int exportFrameBuffers(Camera *camera, Stream *stream,
@ -561,11 +562,12 @@ PipelineHandlerRPi::PipelineHandlerRPi(CameraManager *manager)
{
}
CameraConfiguration *PipelineHandlerRPi::generateConfiguration(Camera *camera,
const StreamRoles &roles)
std::unique_ptr<CameraConfiguration>
PipelineHandlerRPi::generateConfiguration(Camera *camera, const StreamRoles &roles)
{
RPiCameraData *data = cameraData(camera);
CameraConfiguration *config = new RPiCameraConfiguration(data);
std::unique_ptr<CameraConfiguration> config =
std::make_unique<RPiCameraConfiguration>(data);
V4L2SubdeviceFormat sensorFormat;
unsigned int bufferCount;
PixelFormat pixelFormat;
@ -640,13 +642,11 @@ CameraConfiguration *PipelineHandlerRPi::generateConfiguration(Camera *camera,
default:
LOG(RPI, Error) << "Requested stream role not supported: "
<< role;
delete config;
return nullptr;
}
if (rawCount > 1 || outCount > 2) {
LOG(RPI, Error) << "Invalid stream roles requested";
delete config;
return nullptr;
}

9
src/libcamera/pipeline/rkisp1/rkisp1.cpp
View file

@ -142,7 +142,7 @@ class PipelineHandlerRkISP1 : public PipelineHandler
public:
PipelineHandlerRkISP1(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
@ -539,7 +539,8 @@ PipelineHandlerRkISP1::PipelineHandlerRkISP1(CameraManager *manager)
* Pipeline Operations
*/
CameraConfiguration *PipelineHandlerRkISP1::generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration>
PipelineHandlerRkISP1::generateConfiguration(Camera *camera,
const StreamRoles &roles)
{
RkISP1CameraData *data = cameraData(camera);
@ -550,7 +551,8 @@ CameraConfiguration *PipelineHandlerRkISP1::generateConfiguration(Camera *camera
return nullptr;
}
CameraConfiguration *config = new RkISP1CameraConfiguration(camera, data);
std::unique_ptr<CameraConfiguration> config =
std::make_unique<RkISP1CameraConfiguration>(camera, data);
if (roles.empty())
return config;
@ -595,7 +597,6 @@ CameraConfiguration *PipelineHandlerRkISP1::generateConfiguration(Camera *camera
default:
LOG(RkISP1, Warning)
<< "Requested stream role not supported: " << role;
delete config;
return nullptr;
}

10
src/libcamera/pipeline/simple/simple.cpp
View file

@ -311,7 +311,7 @@ class SimplePipelineHandler : public PipelineHandler
public:
SimplePipelineHandler(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
@ -1037,12 +1037,12 @@ SimplePipelineHandler::SimplePipelineHandler(CameraManager *manager)
{
}
CameraConfiguration *SimplePipelineHandler::generateConfiguration(Camera *camera,
const StreamRoles &roles)
std::unique_ptr<CameraConfiguration>
SimplePipelineHandler::generateConfiguration(Camera *camera, const StreamRoles &roles)
{
SimpleCameraData *data = cameraData(camera);
CameraConfiguration *config =
new SimpleCameraConfiguration(camera, data);
std::unique_ptr<CameraConfiguration> config =
std::make_unique<SimpleCameraConfiguration>(camera, data);
if (roles.empty())
return config;

8
src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
View file

@ -74,7 +74,7 @@ class PipelineHandlerUVC : public PipelineHandler
public:
PipelineHandlerUVC(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
@ -178,11 +178,13 @@ PipelineHandlerUVC::PipelineHandlerUVC(CameraManager *manager)
{
}
CameraConfiguration *PipelineHandlerUVC::generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration>
PipelineHandlerUVC::generateConfiguration(Camera *camera,
const StreamRoles &roles)
{
UVCCameraData *data = cameraData(camera);
CameraConfiguration *config = new UVCCameraConfiguration(data);
std::unique_ptr<CameraConfiguration> config =
std::make_unique<UVCCameraConfiguration>(data);
if (roles.empty())
return config;

8
src/libcamera/pipeline/vimc/vimc.cpp
View file

@ -84,7 +84,7 @@ class PipelineHandlerVimc : public PipelineHandler
public:
PipelineHandlerVimc(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
@ -189,11 +189,13 @@ PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
{
}
CameraConfiguration *PipelineHandlerVimc::generateConfiguration(Camera *camera,
std::unique_ptr<CameraConfiguration>
PipelineHandlerVimc::generateConfiguration(Camera *camera,
const StreamRoles &roles)
{
VimcCameraData *data = cameraData(camera);
CameraConfiguration *config = new VimcCameraConfiguration(data);
std::unique_ptr<CameraConfiguration> config =
std::make_unique<VimcCameraConfiguration>(data);
if (roles.empty())
return config;

3
src/libcamera/pipeline_handler.cpp
View file

@ -233,8 +233,7 @@ void PipelineHandler::unlockMediaDevices()
* handler.
*
* \return A valid CameraConfiguration if the requested roles can be satisfied,
* or a null pointer otherwise. The ownership of the returned configuration is
* passed to the caller.
* or a null pointer otherwise.
*/
/**