SubtitleEdit/libse/BluRaySup/ToolBox.cs
2016-01-24 16:49:03 +02:00

123 lines
4.3 KiB
C#

/*
* Copyright 2009 Volker Oth (0xdeadbeef)
*
* 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.
*
* NOTE: Converted to C# and modified by Nikse.dk@gmail.com
*/
using System.Text;
namespace Nikse.SubtitleEdit.Core.BluRaySup
{
public static class ToolBox
{
/// <summary>
/// Convert bytes to a C-style hex string with leading zeroes
/// </summary>
public static string ToHex(byte[] buffer, int index, int digits)
{
var sb = new StringBuilder();
for (int i = index; i < index + digits; i++)
{
string s = string.Format("{0:X}", buffer[i]);
if (s.Length < 2)
sb.Append('0');
sb.Append(s);
}
return "0x" + sb;
}
/// <summary>
/// Convert a long integer to a C-style hex string with leading zeroes
/// </summary>
public static string ToHex(int number, int digits)
{
string s = string.Format("{0:X}", number);
if (s.Length < digits)
s = s.PadLeft(digits, '0');
return "0x" + s;
}
/**
* Convert time in milliseconds to array containing hours, minutes, seconds and milliseconds
* @param ms Time in milliseconds
* @return Array containing hours, minutes, seconds and milliseconds (in this order)
*/
public static int[] MillisecondsToTime(long ms)
{
int[] time = new int[4];
// time[0] = hours
time[0] = (int)(ms / (60 * 60 * 1000));
ms -= time[0] * 60 * 60 * 1000;
// time[1] = minutes
time[1] = (int)(ms / (60 * 1000));
ms -= time[1] * 60 * 1000;
// time[2] = seconds
time[2] = (int)(ms / 1000);
ms -= time[2] * 1000;
time[3] = (int)ms;
return time;
}
/// <summary>
/// Convert time in 90kHz ticks to string hh:mm:ss.ms
/// </summary>
/// <param name="pts">Time in 90kHz resolution</param>
/// <returns>String in format hh:mm:ss:ms</returns>
public static string PtsToTimeString(long pts)
{
int[] time = MillisecondsToTime((pts + 45) / 90);
return string.Format(@"{0:D2}:{1:D2}:{2:D2}.{3:D3}", time[0], time[1], time[2], time[3]);
}
/// <summary>
/// Write (big endian) double word to buffer[index] (index points at most significant byte)
/// </summary>
/// <param name="buffer">Byte array</param>
/// <param name="index">Index to write to</param>
/// <param name="val">Integer value of double word to write</param>
public static void SetDWord(byte[] buffer, int index, int val)
{
buffer[index] = (byte)(val >> 24);
buffer[index + 1] = (byte)(val >> 16);
buffer[index + 2] = (byte)(val >> 8);
buffer[index + 3] = (byte)(val);
}
/// <summary>
/// Write (big endian) word to buffer[index] (index points at most significant byte)
/// </summary>
/// <param name="buffer">Byte array</param>
/// <param name="index">index Index to write to</param>
/// <param name="val">val Integer value of word to write</param>
public static void SetWord(byte[] buffer, int index, int val)
{
buffer[index] = (byte)(val >> 8);
buffer[index + 1] = (byte)(val);
}
/// <summary>
/// Write byte to buffer[index]
/// </summary>
/// <param name="buffer">Byte array</param>
/// <param name="index">Index to write to</param>
/// <param name="val">Integer value of byte to write</param>
public static void SetByte(byte[] buffer, int index, int val)
{
buffer[index] = (byte)(val);
}
}
}