1 files changed, 162 insertions, 0 deletions

diff --git a/mtp/ffs/MtpPacket.cpp b/mtp/ffs/MtpPacket.cpp
new file mode 100644
index 000000000..9d6f875c6
--- /dev/null
+++ b/mtp/ffs/MtpPacket.cpp
@@ -0,0 +1,162 @@
+/*
+ * 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 "MtpPacket"
+
+#include "MtpDebug.h"
+#include "MtpPacket.h"
+#include "mtp.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <usbhost/usbhost.h>
+
+MtpPacket::MtpPacket(int bufferSize)
+	:	mBuffer(NULL),
+		mBufferSize(bufferSize),
+		mAllocationIncrement(bufferSize),
+		mPacketSize(0)
+{
+	mBuffer = (uint8_t *)malloc(bufferSize);
+	if (!mBuffer) {
+		MTPE("out of memory!");
+		abort();
+	}
+}
+
+MtpPacket::~MtpPacket() {
+	if (mBuffer)
+		free(mBuffer);
+}
+
+void MtpPacket::reset() {
+	allocate(MTP_CONTAINER_HEADER_SIZE);
+	mPacketSize = MTP_CONTAINER_HEADER_SIZE;
+	memset(mBuffer, 0, mBufferSize);
+}
+
+void MtpPacket::allocate(size_t length) {
+	if (length > mBufferSize) {
+		int newLength = length + mAllocationIncrement;
+		mBuffer = (uint8_t *)realloc(mBuffer, newLength);
+		if (!mBuffer) {
+			MTPE("out of memory!");
+			abort();
+		}
+		mBufferSize = newLength;
+	}
+}
+
+void MtpPacket::dump() {
+#define DUMP_BYTES_PER_ROW	16
+	char buffer[500];
+	char* bufptr = buffer;
+
+	for (size_t i = 0; i < mPacketSize; i++) {
+		bufptr += snprintf(bufptr, sizeof(buffer) - (bufptr - buffer), "%02X ",
+						   mBuffer[i]);
+		if (i % DUMP_BYTES_PER_ROW == (DUMP_BYTES_PER_ROW - 1)) {
+			ALOGV("%s", buffer);
+			bufptr = buffer;
+		}
+	}
+	if (bufptr != buffer) {
+		// print last line
+		ALOGV("%s", buffer);
+	}
+	ALOGV("\n");
+}
+
+void MtpPacket::copyFrom(const MtpPacket& src) {
+	int length = src.mPacketSize;
+	allocate(length);
+	mPacketSize = length;
+	memcpy(mBuffer, src.mBuffer, length);
+}
+
+uint16_t MtpPacket::getUInt16(int offset) const {
+	return ((uint16_t)mBuffer[offset + 1] << 8) | (uint16_t)mBuffer[offset];
+}
+
+uint32_t MtpPacket::getUInt32(int offset) const {
+	return ((uint32_t)mBuffer[offset + 3] << 24) | ((uint32_t)mBuffer[offset + 2] << 16) |
+		   ((uint32_t)mBuffer[offset + 1] << 8)  | (uint32_t)mBuffer[offset];
+}
+
+void MtpPacket::putUInt16(int offset, uint16_t value) {
+	mBuffer[offset++] = (uint8_t)(value & 0xFF);
+	mBuffer[offset++] = (uint8_t)((value >> 8) & 0xFF);
+}
+
+void MtpPacket::putUInt32(int offset, uint32_t value) {
+	mBuffer[offset++] = (uint8_t)(value & 0xFF);
+	mBuffer[offset++] = (uint8_t)((value >> 8) & 0xFF);
+	mBuffer[offset++] = (uint8_t)((value >> 16) & 0xFF);
+	mBuffer[offset++] = (uint8_t)((value >> 24) & 0xFF);
+}
+
+uint16_t MtpPacket::getContainerCode() const {
+	return getUInt16(MTP_CONTAINER_CODE_OFFSET);
+}
+
+void MtpPacket::setContainerCode(uint16_t code) {
+	putUInt16(MTP_CONTAINER_CODE_OFFSET, code);
+}
+
+uint16_t MtpPacket::getContainerType() const {
+	return getUInt16(MTP_CONTAINER_TYPE_OFFSET);
+}
+
+MtpTransactionID MtpPacket::getTransactionID() const {
+	return getUInt32(MTP_CONTAINER_TRANSACTION_ID_OFFSET);
+}
+
+void MtpPacket::setTransactionID(MtpTransactionID id) {
+	putUInt32(MTP_CONTAINER_TRANSACTION_ID_OFFSET, id);
+}
+
+uint32_t MtpPacket::getParameter(int index) const {
+	if (index < 1 || index > 5) {
+		MTPE("index %d out of range in MtpPacket::getParameter", index);
+		return 0;
+	}
+	return getUInt32(MTP_CONTAINER_PARAMETER_OFFSET + (index - 1) * sizeof(uint32_t));
+}
+
+void MtpPacket::setParameter(int index, uint32_t value) {
+	if (index < 1 || index > 5) {
+		MTPE("index %d out of range in MtpPacket::setParameter", index);
+		return;
+	}
+	int offset = MTP_CONTAINER_PARAMETER_OFFSET + (index - 1) * sizeof(uint32_t);
+	if (mPacketSize < offset + sizeof(uint32_t))
+		mPacketSize = offset + sizeof(uint32_t);
+	putUInt32(offset, value);
+}
+
+#ifdef MTP_HOST
+int MtpPacket::transfer(struct usb_request* request) {
+	int result = usb_device_bulk_transfer(request->dev,
+							request->endpoint,
+							request->buffer,
+							request->buffer_length,
+							0);
+	request->actual_length = result;
+	return result;
+}
+#endif