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Add a script to update the local copy of kernel headers (in
include/linux/) from a Linux kernel git tree. The script handles header
installation, manual processing of the IPU3 header that is still in
staging, and update of the README file.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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We aim to ensure that our includes are alphabetically sorted. Whilst
checkstyle.py also handles this, enable the clang-format explicitly to
define the code-style requirement, and allow clang-format to also
correct un-sorted header includes.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The libcamera coding style allows functions to be defined on a single
line only when they're inline. Update the clang-format configuration
accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add all options available in the new version that were previously
commented out (or just not listed). The commented out value is replaced
by the clang-format-7 default where they differ, to avoid changing the
current behaviour.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When the IPU3Frames completes, it deletes the internal info storage.
This storage contains the pointer to the Request, but in some cases the
pointer was being accessed after the info structure was removed.
Ensure that the Request is obtained before attempting to complete to
obtain a valid pointer.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Fix trivial spelling mistake.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add tracing to the base pipeline handler class to track when requests are queued.
Tracing is already available for other Request operations, but queuing a Request
is not an operation handled by the Request itself.
Add the tracepoint to the PipelineHandler::queueRequest() so the lifetime of a
Request can be viewed when tracing.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The packages required for tracing libcamera projects were incorrectly
specified.
Update with the correct prefix for the dev package on liblttng-ust-dev
and also provide the lttng-tools package which provides the utilities
required to handle tracing.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When a pipeline handler completes a request, the request itself is not
deleted by libcamera, and the application regains control over the
object. It may choose to delete the Request, or re-use it.
Clarify this in the comment by removing the declaration that the Request
is deleted, but state that it is no longer managed by the pipeline
handler and must not be accessed further after this function returns.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Umang Jain <email@uajain.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Requests should only be completed from the RequestPending state.
Requests which are completed from the RequestCancelled, or RequestComplete
state, will indicate that a double-complete has been called on the Request,
or that it has been used internally after it has been given back to the
application.
Ensure that this can be caught early if it occurs by enforcing the state
required with an assert.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <email@uajain.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When configuring streams, the camera HAL is supposed to update the
gralloc usage flags to reflect the operations it will need to do on the
stream buffers. Failure to do so leads to incorrect format selection by
gralloc for the HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED format, as
gralloc will not take into consideration the need of the camera to
access the buffers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Camera sensors can include an ISP. For instance, the AP1302 external ISP
can be connected to up to two raw camera sensors, and the combination of
the sensors and ISP is considered as a (smart) camera sensor from
libcamera's point of view.
The CameraSensor class has limited support for this already. Extend the
simple pipeline handler to support such sensors, by using the media
entity corresponding to the ISP instead of the raw camera sensor's
entity.
We don't need to handle the case where an entity in the SoC would expose
the MEDIA_ENT_F_PROC_VIDEO_ISP function, as pipeline containing an ISP
would have a dedicated pipeline handler.
The implementation is limited as it won't support other multi-entity
camera sensors (such as CCS). While this would be worth supporting, we
don't have a test platform with a CCS-compatible sensor at this point,
so let's not over-engineer the solution. Extending support to CCS (and
possibly other sensor topologies) will likely involve helpers that can
be used by other pipeline handlers (such as generic graph walk helpers
for instance) and extensions to the CameraSensor class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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When walking the pipeline, follow the first link of each source pad.
This patch removes a redundant condition for choosing the link:
"(link->flags() & MEDIA_LNK_FL_ENABLED) ||
!(link->flags() & MEDIA_LNK_FL_IMMUTABLE)"
since it always returns true.
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The has_input variable is unused, drop it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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When opening a V4L2VideoDevice multiple times, for instance to run
multiple jobs on a M2M device, it's useful to attribute log messages to
a particular instance. Include the device fd in the log prefix.
This turns the existing output
[1:43:01.958321522] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[cap]: Queueing buffer 0
[1:43:01.958350060] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[cap]: Queueing buffer 1
[1:43:01.958365137] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[cap]: Queueing buffer 2
into
[1:43:01.958321522] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[14:cap]: Queueing buffer 0
[1:43:01.958350060] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[14:cap]: Queueing buffer 1
[1:43:01.958365137] [277] DEBUG V4L2 v4l2_videodevice.cpp:1440 /dev/video0[14:cap]: Queueing buffer 2
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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There are use cases for getting the file descriptor of a const
V4L2Device instance, for instance to print it in a log. Make the
function const. There's little risk of abuse here (as in code then
performing operations on the file descriptors that conceptually modify
the V4L2 device), as the fd() function is protected.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The pipeline handler would enable and use the Unicam embedded data stream
even if the sensor did not support it. This was to allow a means to
pass exposure and gain values for the frame to the IPA in a synchronised
way.
The recent changes to get the pipeline handler to pass a ControlList
with exposure and gain values means this is no longer required. Disable
the use of the embedded data stream when a sensor does not support it.
This change also removes the mappedEmbeddedBuffers_ map as it is no
longer used.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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With the recent change to pass a ControlList to the IPA with exposure
and gain values used for a frame, RPiController::MdParserRPi is not
needed any more. Remove all traces of it.
The derived CamHelper objects now pass nullptr values for the parser to
the base CamHelper class when sensors do not use metadata.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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When running with sensors that had no embedded data, the pipeline handler
would fill a dummy embedded data buffer with gain/exposure values, and
pass this buffer to the IPA together with the bayer buffer. The IPA would
extract these values for use in the controller algorithms.
Rework this logic entirely by having a new RPiCameraData::BayerFrame
queue to replace the existing bayer queue. In addition to storing the
FrameBuffer pointer, this also stores all the controls tracked by
DelayedControls for that frame in a ControlList. This includes include
exposure and gain values. On signalling RPi::IPA_EVENT_SIGNAL_ISP_PREPARE
IPA event, the pipeline handler now passes this ControlList from the
RPiCameraData::BayerFrame queue.
The IPA now extracts the gain and exposure values from the ControlList
instead of using RPiController::MdParserRPi to parse the embedded data
buffer.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Camera sensors can include an ISP, which may be reported as a separate
entity from the pixel array in the media graph.
Support such sensors by accepting MEDIA_ENT_F_PROC_VIDEO_ISP as a valid
entity type. This allows using sensors that can be fully (or at least
meaningfully) configured through the ISP's source pad only. Sensors that
require further configuration, on the ISP sink pad and/or on the pixel
array's source pad, will require further extension to the CameraSensor
class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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When a sensor can upscale the image, the native sensor resolution isn't
equal to the largest size reported by the sensor. Use the active area
size instead, and default it to the largest enumerated size if the crop
rectangle targets are not supported.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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The rkisp1 driver has received support for newer ISP versions, which
changes its userspace API and ABI. Adapt to the API change. This
requires kernel v5.11 or newer, or backporting the corresponding rkisp1
changes to older kernels.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Update Linux headers to v5.12-rc1, to provide the
MEDIA_ENT_F_PROC_VIDEO_ISP entity function.
The DRM FourCC and modifiers that were manually added in commits
9db0ed5e2065, 38f2efb05cef and 90c793c6989f are kept. New Intel DRM
format modifiers are conflicting with IPU3_FORMAT_MOD_PACKED, which is
updated as a result.
The V4L2 controls and formats that were manually added in commit
43d81d43fe91 are kept. This causes a conflict in the V4L2 control base
for V4L2_CID_USER_BCM2835_ISP_BASE that needs to be resolved in the
downstream Raspberry Pi kernel first.
The intel-ipu3.h header is manually exported with the
scripts/headers_install.sh script. The script complained about a missing
"WITH Linux-syscall-note" license extension, which has been worked
around manually. The issue has been reported upstream in [1].
[1] https://lore.kernel.org/linux-media/20210207235610.15687-1-laurent.pinchart@ideasonboard.com/T/#u
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Implement and expose the symbol and functions that the new cros camera
API requires. Since we don't actually need them, leave them empty.
Update meson accordingly.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Introduce the CameraBuffer backend for the Chromium OS operating system
and the associated meson option.
The Chromium OS CameraBuffer implementation uses the
cros::CameraBufferManager class to perform mapping of 1 plane and multiplane
buffers and to retrieve size information.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Each memory backend has to declare a CameraBuffer class implementation
that bridges the API calls to each CameraBuffer::Private implementation.
As the code is likely the same for most (if not all) backends, provide
a convenience macro that expands to the CameraBuffer class declaration.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Use the newly introduced function to retrieve the size of
the JPEG encoding destination buffer, in order to calculate where
the JPEG_BLOB_ID should be placed.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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To maintain compatibility with platforms that do not provide a memory
backend implementation add a method to be return the size of the buffer
used for JPEG encoding capped to a maximum size.
Platforms that implement a memory backend will always calculate the
correct buffer size.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Use the newly introduced CameraBuffer class as the type for the
destination buffer in the PostProcessor class hierarchy in place of the
libcamera::MappedFrameBuffer one and use its API to retrieve the length
and the location of the CameraBuffer plane allocated for JPEG
post-processing.
Remove all the assumption on the underlying memory storage and only go
through the CameraBuffer API when dealing with memory buffers. To do so
rework the Encoder interface to use a raw pointer and an explicit size
to remove access to the Span<uint8_t> maps that serve as memory storage
for the current implementation but might not be ideal for other memory
backend.
Now that the whole PostProcessor hierarchy has been converted to use
the CameraBuffer API remove libcamera::MappedBuffer as base class
of the CameraBuffer interface and only reply on its interface.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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In order to prepare to support more memory backends, make the
CameraBuffer class implement the PIMPL (pointer-to-implementation)
pattern by inheriting from the libcamera::Extensible class.
Temporary maintain libcamera::MappedBuffer as the CameraBuffer base
class to maintain compatibility of the CameraStream::process() interface
that requires a MappedBuffer * as second argument and will be converted
to use a CameraBuffer in the next patch.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The destination buffer for the post-processing component is
currently first mapped in the CameraDevice class and then passed
to CameraStream which simply calls the post-processor interface.
Move the mapping to CameraStream::process() to tie the buffer
mapping to the lifetime of the CameraBuffer instance.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The buffers passed to the post processor are currently named 'buffer'
and 'mapped', names that do not convey their role.
Use 'src' and 'dest' instead.
Cosmetic change only.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The buffer_handle_t type is defined as 'const native_handle_t*'.
Drop the 'const' specifier from the parameter of the CameraBuffer
class constructor and in the Android generic memory backend.
Also rename 'camera3buffer' in 'camera3Buffer' to comply with the
coding style guidelines.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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In order to provide support for different memory backends,
move the MappedCamera3Buffer class definition outside of the
CameraDevice class to its own file and rename it in CameraBuffer.
The interface defined in camera_buffer.h will be implemented by
different backends that will be placed in the src/android/mm
subdirectory.
Provide a first implementation for the 'generic android' backend
which matches the existing one.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The Android Camera3 HAL implementation requires platform
specific extensions, such as the selection of the memory backend
to use and additional constraints depending on the target device.
Define a combo option to select which platform to target and
define the currently existing implementation as 'generic'.
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Allow support for multiple streams on a per-device basis. The decision
should be made based on the ability of the converter to run multiple
times within the duration of one frame. Hardcode it in
SimplePipelineInfo for now.
We may later compute the number of supported streams dynamically based
on the requested configuration, using converter bandwidth information
instead of a hardcoded fixed value.
All platforms are currently limited to a single stream until they get
successfully tested with multiple streams.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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To extend the multi-stream support to runtime operation of the pipeline,
expand the converter queue to store multiple output buffers, and update
the request queuing and buffer completion handlers accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Extend the SimpleCameraConfiguration to support multiple streams, using
the multi-stream capability of the SimpleConverter class. Wiring up
multi-stream support in the other pipeline handler operations will come
in further commits.
To keep the code simple, require all streams to use the converter if any
stream needs it. It would be possible to generate one stream without
conversion (provided the format and size match what the capture device
can generate), and this is left as a future optimization.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The number of internal buffers, used between the capture device and the
converter, doesn't need to depend on the number of buffers allocated for
the output stream of the pipeline. Hardcode it to a fixed value.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Converter usage is a per-camera property, move its data to the
SimpleCameraData class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Store the list of converter output formats in the Configuration
structure, to be used to implement multi-stream support. As the
Configuration structure grows bigger, avoid duplicating it in the
formats_ map for each supported pixel format by storing it in a configs_
vector instead, and storing pointers only in the map.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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As the pipeline configuration is selected in
SimpleCameraConfiguration::validate() already, cache it in the
SimpleCameraConfiguration instead of looking it up in
SimplePipelineHandler::configure(). This makes little difference at the
moment, but will save duplication of more complex logic between
validate() and configure() when adding support for multiple streams.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The Configuration::pixelFormat field stores the pixel format at the
output of the capture part of the pipeline. Rename it to captureFormat,
to match the related captureSize field.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The simple pipeline handler has grown over time, and isn't that simple
anymore that it can easily be understood by an unfamiliar reader.
Document the design to explicitly state the expectations of the pipeline
handler, and to explain how it operates.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The SimpleCameraConfiguration class has a sensorFormat_ member variable
and a corresponding accessor that are never used. Drop them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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To prepare for multiple streams support, store the streams in a vector
in the SimpleCameraData class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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While the M2M device backing the converter doesn't support multiple
streams natively, it can be run once per stream to produce multiple
outputs from the same input, with different output formats and sizes.
To support this, create a class to model a stream and move control of
the M2M device to the Stream class. The SimpleConverter class then
creates stream instances and iterates over them. Each stream needs its
own instance of the V4L2M2MDevice, to support different output
configurations. The SimpleConverter class retains a device instance to
support the query operations.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The SimpleConverter API signals completion of input and output buffer
pairs. This unnecessarily delays requeueing the input buffer to the
video capture queue until the output buffer completes, and also delays
signalling request completion until the input buffer completes. While
this shouldn't cause large delays in practice, it will also not scale
when multi-stream support will be added to the converter class.
To address the current issue and prepare for the future, decouple
signalling of input and output buffers completion.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Simplify the SimpleConverter interface by opening the M2M device in the
constructor. The explicit call to open() is replaced by a check through
a new isValid() function, and the unused close() function is removed.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Phi-Bang Nguyen <pnguyen@baylibre.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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