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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-04-02 17:00:49 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-08-03 17:44:34 +0300
commit83996258a9fc852552fc66726c313c9ed4e325b3 (patch)
tree69c4abd533b18f866ddc817717292c36e793c37e /src
parent3ee52c167f903b12563861797946937989c3c1ab (diff)
libcamera: pipeline: simple: Don't disable links carrying other streams
If a subdev supports the internal routing API, pads unrelated to the pipeline for a given camera sensor may carry streams for other cameras. The link setup logic is updated to take this into account, by avoiding disabling links to unrelated pads. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Diffstat (limited to 'src')
-rw-r--r--src/libcamera/pipeline/simple/simple.cpp26
1 files changed, 23 insertions, 3 deletions
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index 069333c6..28a0db59 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -222,6 +222,11 @@ public:
/* The media entity, always valid. */
MediaEntity *entity;
/*
+ * Whether or not the entity is a subdev that supports the
+ * routing API.
+ */
+ bool supportsRouting;
+ /*
* The local sink pad connected to the upstream entity, null for
* the camera sensor at the beginning of the pipeline.
*/
@@ -404,9 +409,13 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,
*/
std::vector<const MediaPad *> pads;
+ bool supportsRouting = false;
- if (sinkPad)
+ if (sinkPad) {
pads = routedSourcePads(sinkPad);
+ if (!pads.empty())
+ supportsRouting = true;
+ }
if (pads.empty()) {
for (const MediaPad *pad : entity->pads()) {
@@ -421,7 +430,9 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,
MediaEntity *next = link->sink()->entity();
if (visited.find(next) == visited.end()) {
queue.push({ next, link->sink() });
- parents.insert({ next, { entity, sinkPad, pad, link } });
+
+ Entity e{ entity, supportsRouting, sinkPad, pad, link };
+ parents.insert({ next, e });
}
}
}
@@ -435,7 +446,7 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,
* to the sensor. Store all the entities in the pipeline, from the
* camera sensor to the video node, in entities_.
*/
- entities_.push_front({ entity, sinkPad, nullptr, nullptr });
+ entities_.push_front({ entity, false, sinkPad, nullptr, nullptr });
for (auto it = parents.find(entity); it != parents.end();
it = parents.find(entity)) {
@@ -617,6 +628,15 @@ int SimpleCameraData::setupLinks()
}
for (MediaPad *pad : e.entity->pads()) {
+ /*
+ * If the entity supports the V4L2 internal routing API,
+ * assume that it may carry multiple independent streams
+ * concurrently, and only disable links on the sink and
+ * source pads used by the pipeline.
+ */
+ if (e.supportsRouting && pad != e.sink && pad != e.source)
+ continue;
+
for (MediaLink *link : pad->links()) {
if (link == sinkLink)
continue;