aiq: Provide a BinaryData wrapper

The AIQ class loads data as instances of ia_binary_data.
The data for this structure should be loaded from files, and the
lifetime of the data is managed by the lifetime of the class.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>

3 files changed, 106 insertions, 0 deletions

diff --git a/binary_data.cpp b/binary_data.cpp
new file mode 100644
index 0000000..aa65778
--- /dev/null
+++ b/binary_data.cpp
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+/*
+ * Copyright (C) 2021, Google Inc.
+ *
+ * binary_data.cpp - AIQ Binary Data Wrapper
+ */
+
+#include "binary_data.h"
+
+#include <libcamera/base/file.h>
+#include <libcamera/base/log.h>
+
+namespace libcamera::ipa::ipu3 {
+
+LOG_DEFINE_CATEGORY(AIBD)
+
+/**
+ * \class BinaryData
+ * \brief Binary Data wrapper
+ *
+ * Loads data from a file, and returns it as an ia_binary_data type.
+ * Data is freed automatically when the object goes out of scope.
+ */
+
+BinaryData::BinaryData()
+{
+	iaBinaryData_.data = nullptr;
+	iaBinaryData_.size = 0;
+}
+
+int BinaryData::load(const char *filename)
+{
+	File binary(filename);
+
+	if (!binary.exists()) {
+		LOG(AIBD, Error) << "Failed to find file: " << filename;
+		return -ENOENT;
+	}
+
+	if (!binary.open(File::ReadOnly)) {
+		LOG(AIBD, Error) << "Failed to open: " << filename;
+		return -EINVAL;
+	}
+
+	ssize_t fileSize = binary.size();
+	if (fileSize < 0) {
+		LOG(AIBD, Error) << "Failed to determine fileSize: " << filename;
+		return -ENODATA;
+	}
+
+	data_.resize(fileSize);
+
+	int bytesRead = binary.read(data_);
+	if (bytesRead != fileSize) {
+		LOG(AIBD, Error) << "Failed to read file: " << filename;
+		return -EINVAL;
+	}
+
+	iaBinaryData_.data = data_.data();
+	iaBinaryData_.size = fileSize;
+
+	LOG(AIBD, Info) << "Successfully loaded: " << filename;
+
+	return 0;
+}
+
+} /* namespace libcamera::ipa::ipu3 */
diff --git a/binary_data.h b/binary_data.h
new file mode 100644
index 0000000..6f7e55a
--- /dev/null
+++ b/binary_data.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+/*
+ * Copyright (C) 2021, Google Inc.
+ *
+ * binary_data.h - AIQ Binary Data Wrapper
+ */
+
+#include <vector>
+
+#include <ia_imaging/ia_aiq.h>
+
+#include <libcamera/base/class.h>
+
+#ifndef __IPA_IPU3_BINARY_DATA__
+#define __IPA_IPU3_BINARY_DATA__
+
+namespace libcamera::ipa::ipu3 {
+
+class BinaryData
+{
+public:
+	BinaryData();
+
+	int load(const char *filename);
+	ia_binary_data *data() { return &iaBinaryData_; }
+
+private:
+	LIBCAMERA_DISABLE_COPY_AND_MOVE(BinaryData)
+
+	ia_binary_data iaBinaryData_;
+	std::vector<uint8_t> data_;
+};
+
+} /* namespace libcamera::ipa::ipu3 */
+
+#endif /* __IPA_IPU3_BINARY_DATA__ */
+
diff --git a/meson.build b/meson.build
index 683af0e..5be3a94 100644
--- a/meson.build
+++ b/meson.build
@@ -50,6 +50,7 @@ common_arguments = [
 ipa_includes = [
     include_directories('include'),
     include_directories('include/ia_imaging'),
+    include_directories('.'),
 ]
 
 c_arguments = []
@@ -80,6 +81,7 @@ add_project_arguments(c_arguments, language : 'c')
 add_project_arguments(cpp_arguments, language : 'cpp')
 
 ipu3_ipa_files = files([
+    'binary_data.cpp',
     'ipu3.cpp',
 ])