From 168488275aacc804ffd264187dca8b3e48b21d9e Mon Sep 17 00:00:00 2001
From: Harvey Yang <chenghaoyang@chromium.org>
Date: Tue, 22 Oct 2024 07:43:37 +0000
Subject: libcamera: add DmaBufAllocator::exportBuffers()

Add a helper function exportBuffers in DmaBufAllocator to make it easier
to use.

It'll be used in Virtual Pipeline Handler and SoftwareIsp.

Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
---
 include/libcamera/internal/dma_buf_allocator.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include')

diff --git a/include/libcamera/internal/dma_buf_allocator.h b/include/libcamera/internal/dma_buf_allocator.h
index d2a0a0d1..9211d483 100644
--- a/include/libcamera/internal/dma_buf_allocator.h
+++ b/include/libcamera/internal/dma_buf_allocator.h
@@ -7,11 +7,17 @@
 
 #pragma once
 
+#include <memory>
+#include <string>
+#include <vector>
+
 #include <libcamera/base/flags.h>
 #include <libcamera/base/unique_fd.h>
 
 namespace libcamera {
 
+class FrameBuffer;
+
 class DmaBufAllocator
 {
 public:
@@ -28,7 +34,14 @@ public:
 	bool isValid() const { return providerHandle_.isValid(); }
 	UniqueFD alloc(const char *name, std::size_t size);
 
+	int exportBuffers(unsigned int count,
+			  const std::vector<unsigned int> &planeSizes,
+			  std::vector<std::unique_ptr<FrameBuffer>> *buffers);
+
 private:
+	std::unique_ptr<FrameBuffer> createBuffer(
+		std::string name, const std::vector<unsigned int> &planeSizes);
+
 	UniqueFD allocFromHeap(const char *name, std::size_t size);
 	UniqueFD allocFromUDmaBuf(const char *name, std::size_t size);
 	UniqueFD providerHandle_;
-- 
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