mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-12 22:36:58 +08:00
76 lines
3.1 KiB
C#
76 lines
3.1 KiB
C#
|
//! \file AudioEZS.cs
|
||
|
//! \date 2019 Jan 04
|
||
|
//! \brief Studio B-Room audio format.
|
||
|
//
|
||
|
// Copyright (C) 2019 by morkt
|
||
|
//
|
||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
// of this software and associated documentation files (the "Software"), to
|
||
|
// deal in the Software without restriction, including without limitation the
|
||
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
||
|
// sell copies of the Software, and to permit persons to whom the Software is
|
||
|
// furnished to do so, subject to the following conditions:
|
||
|
//
|
||
|
// The above copyright notice and this permission notice shall be included in
|
||
|
// all copies or substantial portions of the Software.
|
||
|
//
|
||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
||
|
// IN THE SOFTWARE.
|
||
|
//
|
||
|
|
||
|
using System.ComponentModel.Composition;
|
||
|
|
||
|
namespace GameRes.Formats.BRoom
|
||
|
{
|
||
|
[Export(typeof(AudioFormat))]
|
||
|
public class EzsAudio : AudioFormat
|
||
|
{
|
||
|
public override string Tag { get { return "EZS"; } }
|
||
|
public override string Description { get { return "Studio B-Room audio format"; } }
|
||
|
public override uint Signature { get { return 0; } }
|
||
|
public override bool CanWrite { get { return false; } }
|
||
|
|
||
|
const byte DefaultKey = 0xDD;
|
||
|
|
||
|
public override SoundInput TryOpen (IBinaryStream file)
|
||
|
{
|
||
|
if (!file.Name.HasExtension ("EZS"))
|
||
|
return null;
|
||
|
var header = file.ReadHeader (0x1B);
|
||
|
uint pcm_size = header.ToUInt32 (0);
|
||
|
if (pcm_size > file.Length)
|
||
|
return null;
|
||
|
byte key = header[4];
|
||
|
var format = new WaveFormat {
|
||
|
FormatTag = header.ToUInt16 (5),
|
||
|
Channels = header.ToUInt16 (7),
|
||
|
SamplesPerSecond = header.ToUInt32 (9),
|
||
|
AverageBytesPerSecond = header.ToUInt32 (13),
|
||
|
BlockAlign = header.ToUInt16 (17),
|
||
|
BitsPerSample = header.ToUInt16 (19),
|
||
|
};
|
||
|
ushort cbSize = header.ToUInt16 (21);
|
||
|
// key ^= DefaultKey;
|
||
|
key = (byte)cbSize;
|
||
|
cbSize ^= key;
|
||
|
format.BitsPerSample ^= key;
|
||
|
if (format.BitsPerSample != 8 && format.BitsPerSample != 16)
|
||
|
return null;
|
||
|
format.AverageBytesPerSecond ^= cbSize;
|
||
|
format.BlockAlign ^= (ushort)format.AverageBytesPerSecond;
|
||
|
format.Channels ^= format.BlockAlign;
|
||
|
if (format.Channels < 1 || format.Channels > 2)
|
||
|
return null;
|
||
|
format.SamplesPerSecond ^= format.Channels;
|
||
|
format.FormatTag ^= format.BitsPerSample;
|
||
|
var input = new StreamRegion (file.AsStream, 0x1B);
|
||
|
return new RawPcmInput (input, format);
|
||
|
}
|
||
|
}
|
||
|
}
|