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-rw-r--r--src/libcamera/meson.build1
-rw-r--r--src/libcamera/source_paths.cpp139
-rw-r--r--src/libcamera/utils.cpp111
3 files changed, 140 insertions, 111 deletions
diff --git a/src/libcamera/meson.build b/src/libcamera/meson.build
index 387d2084..693008d5 100644
--- a/src/libcamera/meson.build
+++ b/src/libcamera/meson.build
@@ -46,6 +46,7 @@ libcamera_sources = files([
'request.cpp',
'semaphore.cpp',
'signal.cpp',
+ 'source_paths.cpp',
'stream.cpp',
'sysfs.cpp',
'thread.cpp',
diff --git a/src/libcamera/source_paths.cpp b/src/libcamera/source_paths.cpp
new file mode 100644
index 00000000..834b698f
--- /dev/null
+++ b/src/libcamera/source_paths.cpp
@@ -0,0 +1,139 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2021, Google Inc.
+ *
+ * source_paths.cpp - Identify libcamera source and build paths
+ */
+
+#include "libcamera/internal/source_paths.h"
+
+#include <dlfcn.h>
+#include <elf.h>
+#include <link.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "libcamera/internal/utils.h"
+
+/**
+ * \file source_paths.h
+ * \brief Identify the build and source path of a not-yet-installed library
+ */
+
+/* musl doesn't declare _DYNAMIC in link.h, declare it manually. */
+extern ElfW(Dyn) _DYNAMIC[];
+
+namespace libcamera {
+
+namespace {
+
+/**
+ * \brief Check if libcamera is installed or not
+ *
+ * Utilise the build_rpath dynamic tag which is stripped out by meson at
+ * install time to determine at runtime if the library currently executing
+ * has been installed or not.
+ *
+ * \return True if libcamera is installed, false otherwise
+ */
+bool isLibcameraInstalled()
+{
+ /*
+ * DT_RUNPATH (DT_RPATH when the linker uses old dtags) is removed on
+ * install.
+ */
+ for (const ElfW(Dyn) *dyn = _DYNAMIC; dyn->d_tag != DT_NULL; ++dyn) {
+ if (dyn->d_tag == DT_RUNPATH || dyn->d_tag == DT_RPATH)
+ return false;
+ }
+
+ return true;
+}
+
+} /* namespace */
+
+namespace utils {
+
+/**
+ * \brief Retrieve the path to the build directory
+ *
+ * During development, it is useful to run libcamera binaries directly from the
+ * build directory without installing them. This function helps components that
+ * need to locate resources in the build tree, such as IPA modules or IPA proxy
+ * workers, by providing them with the path to the root of the build directory.
+ * Callers can then use it to complement or override searches in system-wide
+ * directories.
+ *
+ * If libcamera has been installed, the build directory path is not available
+ * and this function returns an empty string.
+ *
+ * \return The path to the build directory if running from a build, or an empty
+ * string otherwise
+ */
+std::string libcameraBuildPath()
+{
+ if (isLibcameraInstalled())
+ return std::string();
+
+ Dl_info info;
+
+ /* Look up our own symbol. */
+ int ret = dladdr(reinterpret_cast<void *>(libcameraBuildPath), &info);
+ if (ret == 0)
+ return std::string();
+
+ std::string path = dirname(info.dli_fname) + "/../../";
+
+ char *real = realpath(path.c_str(), nullptr);
+ if (!real)
+ return std::string();
+
+ path = real;
+ free(real);
+
+ return path + "/";
+}
+
+/**
+ * \brief Retrieve the path to the source directory
+ *
+ * During development, it is useful to run libcamera binaries directly from the
+ * build directory without installing them. This function helps components that
+ * need to locate resources in the source tree, such as IPA configuration
+ * files, by providing them with the path to the root of the source directory.
+ * Callers can then use it to complement or override searches in system-wide
+ * directories.
+ *
+ * If libcamera has been installed, the source directory path is not available
+ * and this function returns an empty string.
+ *
+ * \return The path to the source directory if running from a build directory,
+ * or an empty string otherwise
+ */
+std::string libcameraSourcePath()
+{
+ std::string path = libcameraBuildPath();
+ if (path.empty())
+ return std::string();
+
+ path += "source";
+
+ char *real = realpath(path.c_str(), nullptr);
+ if (!real)
+ return std::string();
+
+ path = real;
+ free(real);
+
+ struct stat statbuf;
+ int ret = stat(path.c_str(), &statbuf);
+ if (ret < 0 || (statbuf.st_mode & S_IFMT) != S_IFDIR)
+ return std::string();
+
+ return path + "/";
+}
+
+} /* namespace utils */
+
+} /* namespace libcamera */
diff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp
index 49b8fc9e..c7ebef68 100644
--- a/src/libcamera/utils.cpp
+++ b/src/libcamera/utils.cpp
@@ -7,16 +7,10 @@
#include "libcamera/internal/utils.h"
-#include <dlfcn.h>
-#include <elf.h>
#include <iomanip>
-#include <limits.h>
-#include <link.h>
#include <sstream>
#include <stdlib.h>
#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
#include <unistd.h>
/**
@@ -24,9 +18,6 @@
* \brief Miscellaneous utility functions
*/
-/* musl doesn't declare _DYNAMIC in link.h, declare it manually. */
-extern ElfW(Dyn) _DYNAMIC[];
-
namespace libcamera {
namespace utils {
@@ -352,108 +343,6 @@ std::string toAscii(const std::string &str)
}
/**
- * \brief Check if libcamera is installed or not
- *
- * Utilise the build_rpath dynamic tag which is stripped out by meson at
- * install time to determine at runtime if the library currently executing
- * has been installed or not.
- *
- * \return True if libcamera is installed, false otherwise
- */
-bool isLibcameraInstalled()
-{
- /*
- * DT_RUNPATH (DT_RPATH when the linker uses old dtags) is removed on
- * install.
- */
- for (const ElfW(Dyn) *dyn = _DYNAMIC; dyn->d_tag != DT_NULL; ++dyn) {
- if (dyn->d_tag == DT_RUNPATH || dyn->d_tag == DT_RPATH)
- return false;
- }
-
- return true;
-}
-
-/**
- * \brief Retrieve the path to the build directory
- *
- * During development, it is useful to run libcamera binaries directly from the
- * build directory without installing them. This function helps components that
- * need to locate resources in the build tree, such as IPA modules or IPA proxy
- * workers, by providing them with the path to the root of the build directory.
- * Callers can then use it to complement or override searches in system-wide
- * directories.
- *
- * If libcamera has been installed, the build directory path is not available
- * and this function returns an empty string.
- *
- * \return The path to the build directory if running from a build, or an empty
- * string otherwise
- */
-std::string libcameraBuildPath()
-{
- if (isLibcameraInstalled())
- return std::string();
-
- Dl_info info;
-
- /* Look up our own symbol. */
- int ret = dladdr(reinterpret_cast<void *>(libcameraBuildPath), &info);
- if (ret == 0)
- return std::string();
-
- std::string path = dirname(info.dli_fname) + "/../../";
-
- char *real = realpath(path.c_str(), nullptr);
- if (!real)
- return std::string();
-
- path = real;
- free(real);
-
- return path + "/";
-}
-
-/**
- * \brief Retrieve the path to the source directory
- *
- * During development, it is useful to run libcamera binaries directly from the
- * build directory without installing them. This function helps components that
- * need to locate resources in the source tree, such as IPA configuration
- * files, by providing them with the path to the root of the source directory.
- * Callers can then use it to complement or override searches in system-wide
- * directories.
- *
- * If libcamera has been installed, the source directory path is not available
- * and this function returns an empty string.
- *
- * \return The path to the source directory if running from a build directory,
- * or an empty string otherwise
- */
-std::string libcameraSourcePath()
-{
- std::string path = libcameraBuildPath();
- if (path.empty())
- return std::string();
-
- path += "source";
-
- char *real = realpath(path.c_str(), nullptr);
- if (!real)
- return std::string();
-
- path = real;
- free(real);
-
- struct stat statbuf;
- int ret = stat(path.c_str(), &statbuf);
- if (ret < 0 || (statbuf.st_mode & S_IFMT) != S_IFDIR)
- return std::string();
-
- return path + "/";
-}
-
-/**
* \fn alignDown(unsigned int value, unsigned int alignment)
* \brief Align \a value down to \a alignment
* \param[in] value The value to align