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>
diff --git a/media/mtp/MtpDataPacket.h b/media/mtp/MtpDataPacket.h
new file mode 100644
index 0000000..3b18e4e
--- /dev/null
+++ b/media/mtp/MtpDataPacket.h
@@ -0,0 +1,89 @@
+/*
+ * 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.
+ */
+
+#ifndef _MTP_DATA_PACKET_H
+#define _MTP_DATA_PACKET_H
+
+#include "MtpPacket.h"
+#include "mtp.h"
+
+class MtpDataPacket : public MtpPacket {
+private:
+ // current offset for get/put methods
+ int mOffset;
+
+public:
+ MtpDataPacket();
+ virtual ~MtpDataPacket();
+
+ virtual void reset();
+
+ void setOperationCode(MtpOperationCode code);
+ void setTransactionID(MtpTransactionID id);
+
+ inline uint8_t getUInt8() { return (uint8_t)mBuffer[mOffset++]; }
+ inline int8_t getInt8() { return (int8_t)mBuffer[mOffset++]; }
+ uint16_t getUInt16();
+ inline int16_t getInt16() { return (int16_t)getUInt16(); }
+ uint32_t getUInt32();
+ inline int32_t getInt32() { return (int32_t)getUInt32(); }
+ uint64_t getUInt64();
+ inline int64_t getInt64() { return (int64_t)getUInt64(); }
+ void getString(MtpStringBuffer& string);
+
+ void putInt8(int8_t value);
+ void putUInt8(uint8_t value);
+ void putInt16(int16_t value);
+ void putUInt16(uint16_t value);
+ void putInt32(int32_t value);
+ void putUInt32(uint32_t value);
+ void putInt64(int64_t value);
+ void putUInt64(uint64_t value);
+
+ void putAInt8(const int8_t* values, int count);
+ void putAUInt8(const uint8_t* values, int count);
+ void putAInt16(const int16_t* values, int count);
+ void putAUInt16(const uint16_t* values, int count);
+ void putAInt32(const int32_t* values, int count);
+ void putAUInt32(const uint32_t* values, int count);
+ void putAUInt32(const UInt32List* list);
+ void putAInt64(const int64_t* values, int count);
+ void putAUInt64(const uint64_t* values, int count);
+ void putString(const MtpStringBuffer& string);
+ void putString(const char* string);
+ inline void putEmptyString() { putUInt16(0); }
+ inline void putEmptyArray() { putUInt32(0); }
+
+
+#ifdef MTP_DEVICE
+ // fill our buffer with data from the given file descriptor
+ int read(int fd);
+ int readDataHeader(int fd);
+
+ // write our data to the given file descriptor
+ int write(int fd);
+ int writeDataHeader(int fd, uint32_t length);
+#endif
+
+#ifdef MTP_HOST
+ int read(struct usb_endpoint *ep);
+ int write(struct usb_endpoint *ep);
+#endif
+
+ inline bool hasData() const { return mPacketSize > MTP_CONTAINER_HEADER_SIZE; }
+};
+
+#endif // _MTP_DATA_PACKET_H