[PATCH 15 7/7] libcamera: software_isp: Refactor SoftwareIsp to use DmaBufAllocator::exportBuffers

[Harvey Yang]

As the helper function DmaBufAllocator::exportBuffers is added, we can
avoid some code duplication in SoftwareIsp as well.

Signed-off-by: Harvey Yang <chenghaoyang at chromium.org>
Reviewed-by: Milan Zamazal <mzamazal at redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
---
 src/libcamera/software_isp/software_isp.cpp | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/src/libcamera/software_isp/software_isp.cpp b/src/libcamera/software_isp/software_isp.cpp
index 47677784d..5f58e5e40 100644
--- a/src/libcamera/software_isp/software_isp.cpp
+++ b/src/libcamera/software_isp/software_isp.cpp
@@ -256,25 +256,7 @@ int SoftwareIsp::exportBuffers(const Stream *stream, unsigned int count,
 	if (stream == nullptr)
 		return -EINVAL;
 
-	for (unsigned int i = 0; i < count; i++) {
-		const std::string name = "frame-" + std::to_string(i);
-		const size_t frameSize = debayer_->frameSize();
-
-		FrameBuffer::Plane outPlane;
-		outPlane.fd = SharedFD(dmaHeap_.alloc(name.c_str(), frameSize));
-		if (!outPlane.fd.isValid()) {
-			LOG(SoftwareIsp, Error)
-				<< "failed to allocate a dma_buf";
-			return -ENOMEM;
-		}
-		outPlane.offset = 0;
-		outPlane.length = frameSize;
-
-		std::vector<FrameBuffer::Plane> planes{ outPlane };
-		buffers->emplace_back(std::make_unique<FrameBuffer>(std::move(planes)));
-	}
-
-	return count;
+	return dmaHeap_.exportBuffers(count, { debayer_->frameSize() }, buffers);
 }
 
 /**
-- 
2.47.0.rc0.187.ge670bccf7e-goog