apps: Share common source between applications

Multiple source files in the src/apps/cam/ directory are used by cam,
qcam and lc-compliance. They are compiled separately for each
application. Move them to a new src/apps/common/ directory and compile
them in a static library to decrease the number of compilation
operations.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 0 insertions, 109 deletions

diff --git a/src/apps/cam/image.cpp b/src/apps/cam/image.cpp
deleted file mode 100644
index fe2cc6da..00000000
--- a/src/apps/cam/image.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2021, Ideas on Board Oy
- *
- * image.cpp - Multi-planar image with access to pixel data
- */
-
-#include "image.h"
-
-#include <assert.h>
-#include <errno.h>
-#include <iostream>
-#include <map>
-#include <string.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-using namespace libcamera;
-
-std::unique_ptr<Image> Image::fromFrameBuffer(const FrameBuffer *buffer, MapMode mode)
-{
-	std::unique_ptr<Image> image{ new Image() };
-
-	assert(!buffer->planes().empty());
-
-	int mmapFlags = 0;
-
-	if (mode & MapMode::ReadOnly)
-		mmapFlags |= PROT_READ;
-
-	if (mode & MapMode::WriteOnly)
-		mmapFlags |= PROT_WRITE;
-
-	struct MappedBufferInfo {
-		uint8_t *address = nullptr;
-		size_t mapLength = 0;
-		size_t dmabufLength = 0;
-	};
-	std::map<int, MappedBufferInfo> mappedBuffers;
-
-	for (const FrameBuffer::Plane &plane : buffer->planes()) {
-		const int fd = plane.fd.get();
-		if (mappedBuffers.find(fd) == mappedBuffers.end()) {
-			const size_t length = lseek(fd, 0, SEEK_END);
-			mappedBuffers[fd] = MappedBufferInfo{ nullptr, 0, length };
-		}
-
-		const size_t length = mappedBuffers[fd].dmabufLength;
-
-		if (plane.offset > length ||
-		    plane.offset + plane.length > length) {
-			std::cerr << "plane is out of buffer: buffer length="
-				  << length << ", plane offset=" << plane.offset
-				  << ", plane length=" << plane.length
-				  << std::endl;
-			return nullptr;
-		}
-		size_t &mapLength = mappedBuffers[fd].mapLength;
-		mapLength = std::max(mapLength,
-				     static_cast<size_t>(plane.offset + plane.length));
-	}
-
-	for (const FrameBuffer::Plane &plane : buffer->planes()) {
-		const int fd = plane.fd.get();
-		auto &info = mappedBuffers[fd];
-		if (!info.address) {
-			void *address = mmap(nullptr, info.mapLength, mmapFlags,
-					     MAP_SHARED, fd, 0);
-			if (address == MAP_FAILED) {
-				int error = -errno;
-				std::cerr << "Failed to mmap plane: "
-					  << strerror(-error) << std::endl;
-				return nullptr;
-			}
-
-			info.address = static_cast<uint8_t *>(address);
-			image->maps_.emplace_back(info.address, info.mapLength);
-		}
-
-		image->planes_.emplace_back(info.address + plane.offset, plane.length);
-	}
-
-	return image;
-}
-
-Image::Image() = default;
-
-Image::~Image()
-{
-	for (Span<uint8_t> &map : maps_)
-		munmap(map.data(), map.size());
-}
-
-unsigned int Image::numPlanes() const
-{
-	return planes_.size();
-}
-
-Span<uint8_t> Image::data(unsigned int plane)
-{
-	assert(plane <= planes_.size());
-	return planes_[plane];
-}
-
-Span<const uint8_t> Image::data(unsigned int plane) const
-{
-	assert(plane <= planes_.size());
-	return planes_[plane];
-}