pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code

Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.

For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.

For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.

To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":

meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 0 insertions, 46 deletions

diff --git a/src/libcamera/pipeline/raspberrypi/data/example.yaml b/src/libcamera/pipeline/raspberrypi/data/example.yaml
deleted file mode 100644
index c90f518f..00000000
--- a/src/libcamera/pipeline/raspberrypi/data/example.yaml
+++ /dev/null
@@ -1,46 +0,0 @@
-{
-        "version": 1.0,
-        "target": "bcm2835",
-
-        "pipeline_handler":
-        {
-                # The minimum number of internal buffers to be allocated for
-                # Unicam. This value must be greater than 0, but less than or
-                # equal to min_total_unicam_buffers.
-                #
-                # A larger number of internal buffers can reduce the occurrence
-                # of frame drops during high CPU loads, but might also cause
-                # additional latency in the system.
-                #
-                # Note that the pipeline handler might override this value and
-                # not allocate any internal buffers if it knows they will never
-                # be used. For example if the RAW stream is marked as mandatory
-                # and there are no dropped frames signalled for algorithm
-                # convergence.
-                #
-                # "min_unicam_buffers": 2,
-
-                # The minimum total (internal + external) buffer count used for
-                # Unicam. The number of internal buffers allocated for Unicam is
-                # given by:
-                #
-                # internal buffer count = max(min_unicam_buffers,
-                #         min_total_unicam_buffers - external buffer count)
-                #
-                # "min_total_unicam_buffers": 4,
-
-                # Override any request from the IPA to drop a number of startup
-                # frames.
-                #
-                # "disable_startup_frame_drops": false,
-
-                # Custom timeout value (in ms) for Unicam to use. This overrides
-                # the value computed by the pipeline handler based on frame
-                # durations.
-                #
-                # Set this value to 0 to use the pipeline handler computed
-                # timeout value.
-                #
-                # "unicam_timeout_value_ms": 0,
-        }
-}