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, 118 insertions, 0 deletions

diff --git a/src/ipa/rpi/vc4/data/uncalibrated.json b/src/ipa/rpi/vc4/data/uncalibrated.json
new file mode 100644
index 00000000..13eb3f17
--- /dev/null
+++ b/src/ipa/rpi/vc4/data/uncalibrated.json
@@ -0,0 +1,118 @@
+{
+    "version": 2.0,
+    "target": "bcm2835",
+    "algorithms": [
+        {
+            "rpi.black_level":
+            {
+                "black_level": 4096
+            }
+        },
+        {
+            "rpi.awb":
+            {
+                "use_derivatives": 0,
+                "bayes": 0
+            }
+        },
+        {
+            "rpi.agc":
+            {
+                "metering_modes":
+                {
+                    "centre-weighted":
+                    {
+                        "weights": [ 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0 ]
+                    }
+                },
+                "exposure_modes":
+                {
+                    "normal":
+                    {
+                        "shutter": [ 100, 15000, 30000, 60000, 120000 ],
+                        "gain": [ 1.0, 2.0, 3.0, 4.0, 6.0 ]
+                    }
+                },
+                "constraint_modes":
+                {
+                    "normal": [
+                        {
+                            "bound": "LOWER",
+                            "q_lo": 0.98,
+                            "q_hi": 1.0,
+                            "y_target":
+                            [
+                                0, 0.4,
+                                1000, 0.4
+                            ]
+                        }
+                    ]
+                },
+                "y_target":
+                [
+                    0, 0.16,
+                    1000, 0.165,
+                    10000, 0.17
+                ]
+            }
+        },
+        {
+            "rpi.ccm":
+            {
+                "ccms": [
+                    {
+                        "ct": 4000,
+                        "ccm":
+                        [
+                            2.0, -1.0, 0.0,
+                            -0.5, 2.0, -0.5,
+                            0, -1.0, 2.0
+                        ]
+                    }
+                ]
+            }
+        },
+        {
+            "rpi.contrast":
+            {
+                "ce_enable": 0,
+                "gamma_curve":
+                [
+                    0, 0,
+                    1024, 5040,
+                    2048, 9338,
+                    3072, 12356,
+                    4096, 15312,
+                    5120, 18051,
+                    6144, 20790,
+                    7168, 23193,
+                    8192, 25744,
+                    9216, 27942,
+                    10240, 30035,
+                    11264, 32005,
+                    12288, 33975,
+                    13312, 35815,
+                    14336, 37600,
+                    15360, 39168,
+                    16384, 40642,
+                    18432, 43379,
+                    20480, 45749,
+                    22528, 47753,
+                    24576, 49621,
+                    26624, 51253,
+                    28672, 52698,
+                    30720, 53796,
+                    32768, 54876,
+                    36864, 57012,
+                    40960, 58656,
+                    45056, 59954,
+                    49152, 61183,
+                    53248, 62355,
+                    57344, 63419,
+                    61440, 64476,
+                    65535, 65535
+                ]
+            }
+        }
+    ]
+}
\ No newline at end of file