1 files changed, 81 insertions, 0 deletions
diff --git a/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp b/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp
new file mode 100644
index 0000000000..47f188da18
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp
@@ -0,0 +1,81 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+
+#include <utils/Log.h>
+
+#include <string>
+
+#include "MemoryFileSystem.h"
+#include "Utils.h"
+
+namespace android {
+namespace hardware {
+namespace drm {
+namespace V1_1 {
+namespace clearkey {
+
+std::string MemoryFileSystem::GetFileName(const std::string& path) {
+    size_t index = path.find_last_of("/");
+    if (index != std::string::npos) {
+        return path.substr(index+1);
+    } else {
+        return path;
+    }
+}
+
+bool MemoryFileSystem::FileExists(const std::string& fileName) const {
+    auto result = mMemoryFileSystem.find(fileName);
+    return result != mMemoryFileSystem.end();
+}
+
+ssize_t MemoryFileSystem::GetFileSize(const std::string& fileName) const {
+    auto result = mMemoryFileSystem.find(fileName);
+    if (result != mMemoryFileSystem.end()) {
+        return static_cast<ssize_t>(result->second.getFileSize());
+    } else {
+        ALOGE("Failed to get size for %s", fileName.c_str());
+        return -1;
+    }
+}
+
+size_t MemoryFileSystem::Read(const std::string& path, std::string* buffer) {
+    std::string key = GetFileName(path);
+    auto result = mMemoryFileSystem.find(key);
+    if (result != mMemoryFileSystem.end()) {
+        std::string serializedHashFile = result->second.getContent();
+        buffer->assign(serializedHashFile);
+        return buffer->size();
+    } else {
+        ALOGE("Failed to read from %s", path.c_str());
+        return -1;
+    }
+}
+
+size_t MemoryFileSystem::Write(const std::string& path, const MemoryFile& memoryFile) {
+    std::string key = GetFileName(path);
+    mMemoryFileSystem.insert(std::pair<std::string, MemoryFile>(key, memoryFile));
+    return memoryFile.getFileSize();
+}
+
+bool MemoryFileSystem::RemoveFile(const std::string& fileName) {
+    auto result = mMemoryFileSystem.find(fileName);
+    if (result != mMemoryFileSystem.end()) {
+        mMemoryFileSystem.erase(result);
+        return true;
+    } else {
+        ALOGE("Cannot find license to remove: %s", fileName.c_str());
+        return false;
+    }
+}
+
+bool MemoryFileSystem::RemoveAllFiles() {
+    mMemoryFileSystem.clear();
+    return mMemoryFileSystem.empty();
+}
+
+} // namespace clearkey
+} // namespace V1_1
+} // namespace drm
+} // namespace hardware
+} // namespace android