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-rw-r--r--src/libcamera/include/pipeline_handler.h5
-rw-r--r--src/libcamera/pipeline/ipu3/ipu3.cpp32
-rw-r--r--src/libcamera/pipeline/rkisp1/rkisp1.cpp23
-rw-r--r--src/libcamera/pipeline/uvcvideo.cpp29
-rw-r--r--src/libcamera/pipeline/vimc.cpp29
-rw-r--r--src/libcamera/pipeline_handler.cpp72
6 files changed, 190 insertions, 0 deletions
diff --git a/src/libcamera/include/pipeline_handler.h b/src/libcamera/include/pipeline_handler.h
index 067baef5..560be3ba 100644
--- a/src/libcamera/include/pipeline_handler.h
+++ b/src/libcamera/include/pipeline_handler.h
@@ -70,6 +70,11 @@ public:
const StreamRoles &roles) = 0;
virtual int configure(Camera *camera, CameraConfiguration *config) = 0;
+ virtual int exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
+ virtual int importFrameBuffers(Camera *camera, Stream *stream) = 0;
+ virtual void freeFrameBuffers(Camera *camera, Stream *stream) = 0;
+
virtual int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) = 0;
virtual int freeBuffers(Camera *camera,
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 7c4539d4..b73f0f07 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -210,6 +210,11 @@ public:
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
+ int exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;
+ int importFrameBuffers(Camera *camera, Stream *stream) override;
+ void freeFrameBuffers(Camera *camera, Stream *stream) override;
+
int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int freeBuffers(Camera *camera,
@@ -616,6 +621,33 @@ int PipelineHandlerIPU3::configure(Camera *camera, CameraConfiguration *c)
return 0;
}
+int PipelineHandlerIPU3::exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers)
+{
+ IPU3Stream *ipu3stream = static_cast<IPU3Stream *>(stream);
+ V4L2VideoDevice *video = ipu3stream->device_->dev;
+ unsigned int count = stream->configuration().bufferCount;
+
+ return video->exportBuffers(count, buffers);
+}
+
+int PipelineHandlerIPU3::importFrameBuffers(Camera *camera, Stream *stream)
+{
+ IPU3Stream *ipu3stream = static_cast<IPU3Stream *>(stream);
+ V4L2VideoDevice *video = ipu3stream->device_->dev;
+ unsigned int count = stream->configuration().bufferCount;
+
+ return video->importBuffers(count);
+}
+
+void PipelineHandlerIPU3::freeFrameBuffers(Camera *camera, Stream *stream)
+{
+ IPU3Stream *ipu3stream = static_cast<IPU3Stream *>(stream);
+ V4L2VideoDevice *video = ipu3stream->device_->dev;
+
+ video->releaseBuffers();
+}
+
/**
* \todo Clarify if 'viewfinder' and 'stat' nodes have to be set up and
* started even if not in use. As of now, if not properly configured and
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index dbc5df80..ba8f93e8 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -174,6 +174,11 @@ public:
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
+ int exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;
+ int importFrameBuffers(Camera *camera, Stream *stream) override;
+ void freeFrameBuffers(Camera *camera, Stream *stream) override;
+
int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int freeBuffers(Camera *camera,
@@ -665,6 +670,24 @@ int PipelineHandlerRkISP1::configure(Camera *camera, CameraConfiguration *c)
return 0;
}
+int PipelineHandlerRkISP1::exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers)
+{
+ unsigned int count = stream->configuration().bufferCount;
+ return video_->exportBuffers(count, buffers);
+}
+
+int PipelineHandlerRkISP1::importFrameBuffers(Camera *camera, Stream *stream)
+{
+ unsigned int count = stream->configuration().bufferCount;
+ return video_->importBuffers(count);
+}
+
+void PipelineHandlerRkISP1::freeFrameBuffers(Camera *camera, Stream *stream)
+{
+ video_->releaseBuffers();
+}
+
int PipelineHandlerRkISP1::allocateBuffers(Camera *camera,
const std::set<Stream *> &streams)
{
diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp
index ce38445d..b72841ed 100644
--- a/src/libcamera/pipeline/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo.cpp
@@ -65,6 +65,11 @@ public:
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
+ int exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;
+ int importFrameBuffers(Camera *camera, Stream *stream) override;
+ void freeFrameBuffers(Camera *camera, Stream *stream) override;
+
int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int freeBuffers(Camera *camera,
@@ -193,6 +198,30 @@ int PipelineHandlerUVC::configure(Camera *camera, CameraConfiguration *config)
return 0;
}
+int PipelineHandlerUVC::exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers)
+{
+ UVCCameraData *data = cameraData(camera);
+ unsigned int count = stream->configuration().bufferCount;
+
+ return data->video_->exportBuffers(count, buffers);
+}
+
+int PipelineHandlerUVC::importFrameBuffers(Camera *camera, Stream *stream)
+{
+ UVCCameraData *data = cameraData(camera);
+ unsigned int count = stream->configuration().bufferCount;
+
+ return data->video_->importBuffers(count);
+}
+
+void PipelineHandlerUVC::freeFrameBuffers(Camera *camera, Stream *stream)
+{
+ UVCCameraData *data = cameraData(camera);
+
+ data->video_->releaseBuffers();
+}
+
int PipelineHandlerUVC::allocateBuffers(Camera *camera,
const std::set<Stream *> &streams)
{
diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp
index 292900bc..3fb5cacd 100644
--- a/src/libcamera/pipeline/vimc.cpp
+++ b/src/libcamera/pipeline/vimc.cpp
@@ -82,6 +82,11 @@ public:
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
+ int exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;
+ int importFrameBuffers(Camera *camera, Stream *stream) override;
+ void freeFrameBuffers(Camera *camera, Stream *stream) override;
+
int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int freeBuffers(Camera *camera,
@@ -259,6 +264,30 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config)
return 0;
}
+int PipelineHandlerVimc::exportFrameBuffers(Camera *camera, Stream *stream,
+ std::vector<std::unique_ptr<FrameBuffer>> *buffers)
+{
+ VimcCameraData *data = cameraData(camera);
+ unsigned int count = stream->configuration().bufferCount;
+
+ return data->video_->exportBuffers(count, buffers);
+}
+
+int PipelineHandlerVimc::importFrameBuffers(Camera *camera, Stream *stream)
+{
+ VimcCameraData *data = cameraData(camera);
+ unsigned int count = stream->configuration().bufferCount;
+
+ return data->video_->importBuffers(count);
+}
+
+void PipelineHandlerVimc::freeFrameBuffers(Camera *camera, Stream *stream)
+{
+ VimcCameraData *data = cameraData(camera);
+
+ data->video_->releaseBuffers();
+}
+
int PipelineHandlerVimc::allocateBuffers(Camera *camera,
const std::set<Stream *> &streams)
{
diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp
index 698dd525..11d68456 100644
--- a/src/libcamera/pipeline_handler.cpp
+++ b/src/libcamera/pipeline_handler.cpp
@@ -290,6 +290,78 @@ const ControlInfoMap &PipelineHandler::controls(Camera *camera)
*/
/**
+ * \fn PipelineHandler::exportFrameBuffers()
+ * \brief Allocate buffers for \a stream
+ * \param[in] camera The camera
+ * \param[in] stream The stream to allocate buffers for
+ * \param[out] buffers Array of buffers successfully allocated
+ *
+ * This method allocates buffers for the \a stream from the devices associated
+ * with the stream in the corresponding pipeline handler. Those buffers shall be
+ * suitable to be added to a Request for the stream, and shall be mappable to
+ * the CPU through their associated dmabufs with mmap().
+ *
+ * The method may only be called after the Camera has been configured and before
+ * it gets started, or after it gets stopped. It shall be called only for
+ * streams that are part of the active camera configuration, and at most once
+ * per stream until buffers for the stream are freed with freeFrameBuffers().
+ *
+ * exportFrameBuffers() shall also allocate all other resources required by
+ * the pipeline handler for the stream to prepare for starting the Camera. This
+ * responsibility is shared with importFrameBuffers(), and one and only one of
+ * those two methods shall be called for each stream until the buffers are
+ * freed. The pipeline handler shall support all combinations of
+ * exportFrameBuffers() and importFrameBuffers() for the streams contained in
+ * any camera configuration.
+ *
+ * The only intended caller is the FrameBufferAllocator helper.
+ *
+ * \return 0 on success or a negative error code otherwise
+ */
+
+/**
+ * \fn PipelineHandler::importFrameBuffers()
+ * \brief Prepare \a stream to use external buffers
+ * \param[in] camera The camera
+ * \param[in] stream The stream to prepare for import
+ *
+ * This method prepares the pipeline handler to use buffers provided by the
+ * application for the \a stream.
+ *
+ * The method may only be called after the Camera has been configured and before
+ * it gets started, or after it gets stopped. It shall be called only for
+ * streams that are part of the active camera configuration, and at most once
+ * per stream until buffers for the stream are freed with freeFrameBuffers().
+ *
+ * importFrameBuffers() shall also allocate all other resources required by the
+ * pipeline handler for the stream to prepare for starting the Camera. This
+ * responsibility is shared with exportFrameBuffers(), and one and only one of
+ * those two methods shall be called for each stream until the buffers are
+ * freed. The pipeline handler shall support all combinations of
+ * exportFrameBuffers() and importFrameBuffers() for the streams contained in
+ * any camera configuration.
+ *
+ * The only intended caller is Camera::start().
+ *
+ * \return 0 on success or a negative error code otherwise
+ */
+
+/**
+ * \fn PipelineHandler::freeFrameBuffers()
+ * \brief Free buffers allocated from the stream
+ * \param[in] camera The camera
+ * \param[in] stream The stream to free buffers for
+ *
+ * This method shall free all buffers and all other resources allocated for the
+ * \a stream by exportFrameBuffers() or importFrameBuffers(). It shall be
+ * called only after a successful call to either of these two methods, and only
+ * once per stream.
+ *
+ * The only intended callers are Camera::stop() and the FrameBufferAllocator
+ * helper.
+ */
+
+/**
* \fn PipelineHandler::allocateBuffers()
* \brief Allocate buffers for a stream
* \param[in] camera The camera the \a stream belongs to
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-02 04:20:25 +0000