[libcamera-devel] [PATCH 6/8] android: camera_device: Allocate buffer pool

[Jacopo Mondi]

CameraStream instances that are not directly mapped to application
facing Android streams need memory to be reserved in libcamera on their
behalf.

After the libcamera::Camera has been configured, reserve memory for the
CameraStream isntances that need a pool of libcamera allocated buffers.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/android/camera_device.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index d35c6b93b654..a7cb1be03b9a 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -1329,6 +1329,26 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
 		return ret;
 	}
 
+	/*
+	 * Allocate buffers in libcamera for stream not directly mapped to
+	 * Android streams.
+	 */
+	for (unsigned int i = 0; i < stream_list->num_streams; ++i) {
+		camera3_stream_t *camera3Stream = stream_list->streams[i];
+		CameraStream *cameraStream = static_cast<CameraStream *>(camera3Stream->priv);
+		StreamConfiguration &cfg = config_->at(cameraStream->index());
+
+		if (cameraStream->type() != CameraStream::Type::Internal)
+			continue;
+
+		int ret = allocator_.allocate(cfg.stream());
+		if (ret < 0) {
+			LOG(HAL, Error)
+				<< "Failed to allocate buffers for stream " << i;
+			return ret;
+		}
+	}
+
 	return 0;
 }
 
-- 
2.28.0