added helper for copying and converting taken raw images to sdcard

camera/helper/Android.mk

@@ -0,0 +1,15 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    helper.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog libcutils
+
+LOCAL_MODULE_PATH := /system/bin
+LOCAL_MODULE := camera_helper
+LOCAL_MODULE_TAGS := optional
+LOCAL_PROPRIETARY_MODULE := true
+
+include $(BUILD_SHARED_LIBRARY)

camera/helper/helper.c

@@ -0,0 +1,81 @@
+// Copyright 2018 Leonardomeitz@gmail.com
+// This is part of the NeoHomies Project
+
+#include <stdio.h>
+#include <string.h>
+
+#include "helper.h"
+
+static int raw_file_exists(){
+	int ret;
+	DIR *d;
+	struct dirent *dir;
+
+	ret = false;
+	d = opendir(data_path);
+	if (d) {
+		while ((dir = readdir(d)) != NULL) {
+			if (strstr(dir->d_name, "yuv") != NULL){
+				return true;
+			}
+			printf("%s\n", dir->d_name);
+		}
+		closedir(d);
+	}
+
+	return ret;
+}
+
+static char *get_raw_file_name(){
+	char *name;
+	DIR *d;
+	struct dirent *dir;
+
+	name = NULL;
+	d = opendir(data_path);
+	if (d) {
+		while ((dir = readdir(d)) != NULL) {
+			if (strstr(dir->d_name, "yuv") != NULL){
+				return dir->d_name;
+			}
+			printf("%s\n", dir->d_name);
+		}
+		closedir(d);
+	}
+
+	return name;
+}
+
+static int copy_raw_file(char *name){
+	// TODO
+}
+
+static int delete_raw_file(char *name){
+	// TODO
+}
+
+int main(){
+	if (raw_file_exists()) {
+		char *name = get_raw_file_name();
+		if (name != NULL) {
+			// TODO
+			if ((copy_raw_file(name) && delete_raw_file(name)) != NULL) {
+				return true;
+			}
+			else {
+				// Error while copying/deleting
+				return false;
+			}
+		}
+		else {
+			// This should happen, abort!
+			exit(EXIT_FAILURE);
+		}
+	}
+	else {
+		// Called but no file found
+		// Retry in 400 msec
+		// TODO
+		
+	}
+}

camera/helper/helper.h

@@ -0,0 +1,7 @@
+#ifndef __helper__
+#define __helper__
+
+#define EXIT_FAILURE -1
+#define data_path "/data/"
+
+#endif