MTP FFS updates:
This update splits old MTP code and new MTP code from Google
into two trees, legacy and ffs. Depending on the SDK level,
the build system will select the correct version. The reason
for separating the versions out are due to older android trees
not supporting the updated MTP code from Google.
Most MTP code is from Google, with additions needed from
implementing the Java functions in C++ for TWRP and FFS.
We assume if you are in android-9.0 or above, your kernel
has support for FFS over MTP. Verify that your init.rc
is mounting the MTP FFS driver to the proper location.
Change-Id: I4b107b239bd9bc5699527f9c8c77d9079f264a7e
diff --git a/mtp/ffs/MtpEventPacket.cpp b/mtp/ffs/MtpEventPacket.cpp
new file mode 100644
index 0000000..fa7db8c
--- /dev/null
+++ b/mtp/ffs/MtpEventPacket.cpp
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "MtpEventPacket"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+#include "IMtpHandle.h"
+#include "MtpEventPacket.h"
+
+#include <usbhost/usbhost.h>
+
+MtpEventPacket::MtpEventPacket()
+ : MtpPacket(512)
+{
+}
+
+MtpEventPacket::~MtpEventPacket() {
+}
+
+#ifdef MTP_DEVICE
+int MtpEventPacket::write(IMtpHandle *h) {
+ struct mtp_event event;
+
+ putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
+ putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_EVENT);
+
+ event.data = mBuffer;
+ event.length = mPacketSize;
+ int ret = h->sendEvent(event);
+ return (ret < 0 ? ret : 0);
+}
+#endif
+
+#ifdef MTP_HOST
+int MtpEventPacket::sendRequest(struct usb_request *request) {
+ request->buffer = mBuffer;
+ request->buffer_length = mBufferSize;
+ mPacketSize = 0;
+ if (usb_request_queue(request)) {
+ MTPE("usb_endpoint_queue failed, errno: %d", errno);
+ return -1;
+ }
+ return 0;
+}
+
+int MtpEventPacket::readResponse(struct usb_device *device) {
+ struct usb_request* const req = usb_request_wait(device, -1);
+ if (req) {
+ mPacketSize = req->actual_length;
+ return req->actual_length;
+ } else {
+ return -1;
+ }
+}
+#endif