[libcamera-devel] [PATCH v3 08/13] libcamera: pipeline_handler: Return unique_ptr from generateConfiguration()
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Mon Oct 24 02:03:51 CEST 2022
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 at ideasonboard.com>
---
include/libcamera/internal/pipeline_handler.h | 2 +-
src/libcamera/camera.cpp | 8 ++++----
src/libcamera/pipeline/ipu3/ipu3.cpp | 10 +++++-----
src/libcamera/pipeline/raspberrypi/raspberrypi.cpp | 12 ++++++------
src/libcamera/pipeline/rkisp1/rkisp1.cpp | 9 +++++----
src/libcamera/pipeline/simple/simple.cpp | 12 ++++++------
src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 8 +++++---
src/libcamera/pipeline/vimc/vimc.cpp | 8 +++++---
src/libcamera/pipeline_handler.cpp | 3 +--
9 files changed, 38 insertions(+), 34 deletions(-)
diff --git a/include/libcamera/internal/pipeline_handler.h b/include/libcamera/internal/pipeline_handler.h
index b6139a88d421..96aab9d6459e 100644
--- a/include/libcamera/internal/pipeline_handler.h
+++ b/include/libcamera/internal/pipeline_handler.h
@@ -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;
diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 9fe29ca9dca5..daef77016971 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -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;
}
/**
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 3b892d9671c5..e4d79ea44aed 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -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;
}
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index 343f8cb2c7ed..7c54550005fa 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -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;
}
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 1418dc9a47fb..50da92d4d6f8 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -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;
}
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index 37b3e7acd0a1..a32de7f36e13 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -311,8 +311,8 @@ class SimplePipelineHandler : public PipelineHandler
public:
SimplePipelineHandler(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,
@@ -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;
diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
index a28195450634..277465b72164 100644
--- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
@@ -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;
diff --git a/src/libcamera/pipeline/vimc/vimc.cpp b/src/libcamera/pipeline/vimc/vimc.cpp
index f85d05f77a61..204f5ad73f6d 100644
--- a/src/libcamera/pipeline/vimc/vimc.cpp
+++ b/src/libcamera/pipeline/vimc/vimc.cpp
@@ -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;
diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp
index 588a3db30e82..825aff5ac20a 100644
--- a/src/libcamera/pipeline_handler.cpp
+++ b/src/libcamera/pipeline_handler.cpp
@@ -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.
*/
/**
--
Regards,
Laurent Pinchart
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