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author | Mike Lockwood <lockwood@android.com> | 2010-05-11 17:16:59 -0400 |
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committer | Mike Lockwood <lockwood@android.com> | 2010-05-13 15:36:47 -0400 |
commit | 16864bae0f51c32c456da2c43adf7a057c0c4882 (patch) | |
tree | 87eb11d62168084c9e63cdd2bf5fd5d35a573df7 /media/mtp/MtpUtils.cpp | |
parent | 328523627293790cbf485fa6095b38a5fdb2118e (diff) | |
download | frameworks_av-16864bae0f51c32c456da2c43adf7a057c0c4882.zip frameworks_av-16864bae0f51c32c456da2c43adf7a057c0c4882.tar.gz frameworks_av-16864bae0f51c32c456da2c43adf7a057c0c4882.tar.bz2 |
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>
Diffstat (limited to 'media/mtp/MtpUtils.cpp')
-rw-r--r-- | media/mtp/MtpUtils.cpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/media/mtp/MtpUtils.cpp b/media/mtp/MtpUtils.cpp new file mode 100644 index 0000000..a472781 --- /dev/null +++ b/media/mtp/MtpUtils.cpp @@ -0,0 +1,73 @@ +/* + * 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. + */ + +#include <time.h> + +#include <cutils/tztime.h> +#include "MtpUtils.h" + +/* +DateTime strings follow a compatible subset of the definition found in ISO 8601, and +take the form of a Unicode string formatted as: "YYYYMMDDThhmmss.s". In this +representation, YYYY shall be replaced by the year, MM replaced by the month (01-12), +DD replaced by the day (01-31), T is a constant character 'T' delimiting time from date, +hh is replaced by the hour (00-23), mm is replaced by the minute (00-59), and ss by the +second (00-59). The ".s" is optional, and represents tenths of a second. +*/ + +bool parseDateTime(const char* dateTime, time_t& outSeconds) { + int year, month, day, hour, minute, second; + struct tm tm; + + if (sscanf(dateTime, "%04d%02d%02dT%02d%02d%02d", + &year, &month, &day, &hour, &minute, &second) != 6) + return false; + const char* tail = dateTime + 15; + // skip optional tenth of second + if (tail[0] == '.' && tail[1]) + tail += 2; + //FIXME - support +/-hhmm + bool useUTC = (tail[0] == 'Z'); + + // hack to compute timezone + time_t dummy; + localtime_r(&dummy, &tm); + + tm.tm_sec = second; + tm.tm_min = minute; + tm.tm_hour = hour; + tm.tm_mday = day; + tm.tm_mon = month; + tm.tm_year = year - 1900; + tm.tm_wday = 0; + tm.tm_isdst = -1; + if (useUTC) + outSeconds = mktime(&tm); + else + outSeconds = mktime_tz(&tm, tm.tm_zone); + + return true; +} + +void formatDateTime(time_t seconds, char* buffer, int bufferLength) { + struct tm tm; + + localtime_r(&seconds, &tm); + snprintf(buffer, bufferLength, "%04d%02d%02dT%02d%02d%02d", + tm.tm_year + 1900, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); +} + + |