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-rw-r--r--media/mtp/MtpResponsePacket.cpp57
1 files changed, 57 insertions, 0 deletions
diff --git a/media/mtp/MtpResponsePacket.cpp b/media/mtp/MtpResponsePacket.cpp
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+++ b/media/mtp/MtpResponsePacket.cpp
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+/*
+ * 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 "MtpResponsePacket"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+#include "MtpResponsePacket.h"
+
+namespace android {
+
+MtpResponsePacket::MtpResponsePacket()
+ : MtpPacket(512)
+{
+}
+
+MtpResponsePacket::~MtpResponsePacket() {
+}
+
+#ifdef MTP_DEVICE
+int MtpResponsePacket::write(int fd) {
+ putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
+ putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_RESPONSE);
+ int ret = ::write(fd, mBuffer, mPacketSize);
+ return (ret < 0 ? ret : 0);
+}
+#endif
+
+#ifdef MTP_HOST
+ // read our buffer from the given endpoint
+int MtpResponsePacket::read(struct usb_endpoint *ep) {
+ int ret = transfer(ep, mBuffer, mBufferSize);
+ if (ret >= 0)
+ mPacketSize = ret;
+ else
+ mPacketSize = 0;
+ return ret;
+}
+#endif
+
+} // namespace android
+