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-rw-r--r--src/libcamera/pipeline/raspberrypi/raspberrypi.cpp25
1 files changed, 16 insertions, 9 deletions
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index e31fa3b2..045725dd 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -1248,18 +1248,25 @@ int PipelineHandlerRPi::prepareBuffers(Camera *camera)
/* Decide how many internal buffers to allocate. */
for (auto const stream : data->streams_) {
unsigned int numBuffers;
-
- if (stream == &data->unicam_[Unicam::Image] ||
- stream == &data->unicam_[Unicam::Embedded]) {
+ /*
+ * For Unicam, allocate a minimum of 4 buffers as we want
+ * to avoid any frame drops.
+ */
+ constexpr unsigned int minBuffers = 4;
+ if (stream == &data->unicam_[Unicam::Image]) {
/*
- * For Unicam, allocate a minimum of 4 buffers as we want
- * to avoid any frame drops. If an application has configured
- * a RAW stream, allocate additional buffers to make up the
- * minimum, but ensure we have at least 2 sets of internal
- * buffers to use to minimise frame drops.
+ * If an application has configured a RAW stream, allocate
+ * additional buffers to make up the minimum, but ensure
+ * we have at least 2 sets of internal buffers to use to
+ * minimise frame drops.
*/
- constexpr unsigned int minBuffers = 4;
numBuffers = std::max<int>(2, minBuffers - numRawBuffers);
+ } else if (stream == &data->unicam_[Unicam::Embedded]) {
+ /*
+ * Embedded data buffers are (currently) for internal use,
+ * so allocate the minimum required to avoid frame drops.
+ */
+ numBuffers = minBuffers;
} else {
/*
* Since the ISP runs synchronous with the IPA and requests,