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-rw-r--r--src/libcamera/converter/converter_v4l2_m2m.cpp11
1 files changed, 6 insertions, 5 deletions
diff --git a/src/libcamera/converter/converter_v4l2_m2m.cpp b/src/libcamera/converter/converter_v4l2_m2m.cpp
index d8929fc5..27a50e34 100644
--- a/src/libcamera/converter/converter_v4l2_m2m.cpp
+++ b/src/libcamera/converter/converter_v4l2_m2m.cpp
@@ -403,13 +403,13 @@ void V4L2M2MConverter::stop()
int V4L2M2MConverter::queueBuffers(FrameBuffer *input,
const std::map<unsigned int, FrameBuffer *> &outputs)
{
- unsigned int mask = 0;
+ std::set<FrameBuffer *> outputBufs;
int ret;
/*
* Validate the outputs as a sanity check: at least one output is
* required, all outputs must reference a valid stream and no two
- * outputs can reference the same stream.
+ * streams can reference same output framebuffers.
*/
if (outputs.empty())
return -EINVAL;
@@ -419,12 +419,13 @@ int V4L2M2MConverter::queueBuffers(FrameBuffer *input,
return -EINVAL;
if (index >= streams_.size())
return -EINVAL;
- if (mask & (1 << index))
- return -EINVAL;
- mask |= 1 << index;
+ outputBufs.insert(buffer);
}
+ if (outputBufs.size() != streams_.size())
+ return -EINVAL;
+
/* Queue the input and output buffers to all the streams. */
for (auto [index, buffer] : outputs) {
ret = streams_[index].queueBuffers(input, buffer);