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-rw-r--r--src/libcamera/pipeline/simple/simple.cpp67
1 files changed, 33 insertions, 34 deletions
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index c3fd7e1f..1c53de5c 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -83,14 +83,12 @@ LOG_DEFINE_CATEGORY(SimplePipeline)
* handled by this heuristic.
*
* Once the camera data instances have been created, the match() function
- * creates a V4L2Subdevice instance for each entity used by any of the cameras
- * and stores the instances in SimplePipelineHandler::subdevs_, accessible by
- * the SimpleCameraData class through the SimplePipelineHandler::subdev()
- * function. This avoids duplication of subdev instances between different
- * cameras when the same entity is used in multiple paths. A similar mechanism
- * is used for V4L2VideoDevice instances, but instances are in this case created
- * on demand when accessed through SimplePipelineHandler::video() instead of all
- * in one go at initialization time.
+ * creates a V4L2VideoDevice or V4L2Subdevice instance for each entity used by
+ * any of the cameras and stores them in SimplePipelineHandler::entities_,
+ * accessible by the SimpleCameraData class through the
+ * SimplePipelineHandler::subdev() and SimplePipelineHandler::video() functions.
+ * This avoids duplication of subdev instances between different cameras when
+ * the same entity is used in multiple paths.
*
* Finally, all camera data instances are initialized to gather information
* about the possible pipeline configurations for the corresponding camera. If
@@ -403,10 +401,7 @@ int SimpleCameraData::init()
int ret;
video_ = pipe->video(entities_.back().entity);
- if (!video_) {
- LOG(SimplePipeline, Error) << "Failed to open video device";
- return -ENODEV;
- }
+ ASSERT(video_);
/*
* Setup links first as some subdev drivers take active links into
@@ -1074,24 +1069,44 @@ bool SimplePipelineHandler::match(DeviceEnumerator *enumerator)
/*
* Insert all entities in the global entities list. Create and open
- * V4L2Subdevice instances for each entity corresponding to a V4L2
- * subdevice.
+ * V4L2VideoDevice and V4L2Subdevice instances for the corresponding
+ * entities.
*/
for (MediaEntity *entity : entities) {
+ std::unique_ptr<V4L2VideoDevice> video;
std::unique_ptr<V4L2Subdevice> subdev;
+ int ret;
+
+ switch (entity->type()) {
+ case MediaEntity::Type::V4L2VideoDevice:
+ video = std::make_unique<V4L2VideoDevice>(entity);
+ ret = video->open();
+ if (ret < 0) {
+ LOG(SimplePipeline, Error)
+ << "Failed to open " << video->deviceNode()
+ << ": " << strerror(-ret);
+ return false;
+ }
+
+ video->bufferReady.connect(this, &SimplePipelineHandler::bufferReady);
+ break;
- if (entity->type() == MediaEntity::Type::V4L2Subdevice) {
+ case MediaEntity::Type::V4L2Subdevice:
subdev = std::make_unique<V4L2Subdevice>(entity);
- int ret = subdev->open();
+ ret = subdev->open();
if (ret < 0) {
LOG(SimplePipeline, Error)
<< "Failed to open " << subdev->deviceNode()
<< ": " << strerror(-ret);
return false;
}
+ break;
+
+ default:
+ break;
}
- entities_[entity] = { nullptr, std::move(subdev) };
+ entities_[entity] = { std::move(video), std::move(subdev) };
}
/* Initialize each pipeline and register a corresponding camera. */
@@ -1119,27 +1134,11 @@ bool SimplePipelineHandler::match(DeviceEnumerator *enumerator)
V4L2VideoDevice *SimplePipelineHandler::video(const MediaEntity *entity)
{
- /*
- * Return the V4L2VideoDevice corresponding to the media entity, either
- * as a previously constructed device if available from the cache, or
- * by constructing a new one.
- */
-
auto iter = entities_.find(entity);
if (iter == entities_.end())
return nullptr;
- EntityData &data = iter->second;
- if (data.video)
- return data.video.get();
-
- data.video = std::make_unique<V4L2VideoDevice>(entity);
- if (data.video->open() < 0)
- return nullptr;
-
- data.video->bufferReady.connect(this, &SimplePipelineHandler::bufferReady);
-
- return data.video.get();
+ return iter->second.video.get();
}
V4L2Subdevice *SimplePipelineHandler::subdev(const MediaEntity *entity)