Checkpoint work on MTP and PTP investigation.

This change includes work in progress on a C++ library for both host and device
MTP and PTP support.
Currently the makefile builds two test programs:

mtptest - a command line test program that implements a small subset of device side MTP.
Requires a kernel driver that has not been checked in yet.

ptptest - a host tool to test USB host support for detecting and communicating with
digital cameras over PTP.  Runs on Linux host.

Later this will be reformulated as a native library that will be used in the media process.

Change-Id: I81aab279975b600b59d99013ab97f9adf0b58da7
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/media/mtp/SqliteDatabase.cpp b/media/mtp/SqliteDatabase.cpp
new file mode 100644
index 0000000..5a70dfe
--- /dev/null
+++ b/media/mtp/SqliteDatabase.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SqliteDatabase.h"
+#include "SqliteStatement.h"
+
+#include <stdio.h>
+#include <sqlite3.h>
+
+SqliteDatabase::SqliteDatabase()
+    :   mDatabaseHandle(NULL)
+{
+}
+
+SqliteDatabase::~SqliteDatabase() {
+    close();
+}
+
+bool SqliteDatabase::open(const char* path, bool create) {
+    int flags = SQLITE_OPEN_READWRITE;
+    if (create) flags |= SQLITE_OPEN_CREATE;
+    // SQLITE_OPEN_NOMUTEX?
+    int ret = sqlite3_open_v2(path, &mDatabaseHandle, flags, NULL);
+    if (ret) {
+        fprintf(stderr, "could not open database\n");
+        return false;
+    }
+    return true;
+}
+
+void SqliteDatabase::close() {
+    if (mDatabaseHandle) {
+        sqlite3_close(mDatabaseHandle);
+        mDatabaseHandle = NULL;
+    }
+}
+
+bool SqliteDatabase::exec(const char* sql) {
+    return (sqlite3_exec(mDatabaseHandle, sql, NULL, NULL, NULL) == 0);
+}
+
+int SqliteDatabase::lastInsertedRow() {
+    return sqlite3_last_insert_rowid(mDatabaseHandle);
+}
+
+void SqliteDatabase::beginTransaction() {
+    exec("BEGIN TRANSACTION");
+}
+
+void SqliteDatabase::commitTransaction() {
+    exec("COMMIT TRANSACTION");
+}
+
+void SqliteDatabase::rollbackTransaction() {
+    exec("ROLLBACK TRANSACTION");
+}
+
+int SqliteDatabase::getVersion() {
+    SqliteStatement stmt(this);
+    stmt.prepare("PRAGMA user_version;");
+    stmt.step();
+    return stmt.getColumnInt(0);
+}
+void SqliteDatabase::setVersion(int version) {
+    char    buffer[40];
+    snprintf(buffer, sizeof(buffer), "PRAGMA user_version = %d", version);
+    exec(buffer);
+}