diff options
Diffstat (limited to 'mtp/MtpPacket.cpp')
| -rw-r--r-- | mtp/MtpPacket.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/mtp/MtpPacket.cpp b/mtp/MtpPacket.cpp new file mode 100644 index 000000000..2f9e438ba --- /dev/null +++ b/mtp/MtpPacket.cpp @@ -0,0 +1,164 @@ +/* + * 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. + * + * Copyright (C) 2014 TeamWin - bigbiff and Dees_Troy mtp database conversion to C++ + */ + +#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(int 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++) { + sprintf(bufptr, "%02X ", mBuffer[i]); + bufptr += strlen(bufptr); + if (i % DUMP_BYTES_PER_ROW == (DUMP_BYTES_PER_ROW - 1)) { + MTPD("%s", buffer); + bufptr = buffer; + } + } + if (bufptr != buffer) { + // print last line + MTPD("%s", buffer); + } + MTPD("\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 + |