mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-25 04:55:29 +00:00
267 lines
8.5 KiB
C#
267 lines
8.5 KiB
C#
#region --- License ---
|
|
/* Licensed under the MIT/X11 license.
|
|
* Copyright (c) 2006-2008 the OpenTK Team.
|
|
* This notice may not be removed from any source distribution.
|
|
* See license.txt for licensing details.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.IO;
|
|
|
|
using OpenTK.Audio;
|
|
using System.Diagnostics;
|
|
using System.Runtime.InteropServices;
|
|
|
|
namespace OpenTK.Audio
|
|
{
|
|
internal sealed class WaveReader : AudioReader
|
|
{
|
|
SoundData decoded_data;
|
|
|
|
//RIFF header
|
|
string signature;
|
|
int riff_chunck_size;
|
|
string format;
|
|
|
|
//WAVE header
|
|
string format_signature;
|
|
int format_chunk_size;
|
|
short audio_format;
|
|
short channels;
|
|
int sample_rate;
|
|
int byte_rate;
|
|
short block_align;
|
|
short bits_per_sample;
|
|
|
|
//DATA header
|
|
string data_signature;
|
|
int data_chunk_size;
|
|
|
|
BinaryReader reader;
|
|
|
|
internal WaveReader() { }
|
|
|
|
internal WaveReader(Stream s)
|
|
{
|
|
if (s == null) throw new ArgumentNullException();
|
|
if (!s.CanRead) throw new ArgumentException("Cannot read from specified Stream.");
|
|
|
|
reader = new BinaryReader(s);
|
|
this.Stream = s;
|
|
}
|
|
|
|
#if false
|
|
/// <summary>
|
|
/// Writes the WaveSound's data to the specified OpenAL buffer in the correct format.
|
|
/// </summary>
|
|
/// <param name="bid">
|
|
/// A <see cref="System.UInt32"/>
|
|
/// </param>
|
|
public void WriteToBuffer(uint bid)
|
|
{
|
|
unsafe
|
|
{
|
|
//fix the array as a byte
|
|
fixed (byte* p_Data = _Data)
|
|
{
|
|
if (Channels == 1)
|
|
{
|
|
if (BitsPerSample == 16)
|
|
{
|
|
Console.Write("Uploading 16-bit mono data to OpenAL...");
|
|
AL.BufferData(bid, ALFormat.Mono16, (IntPtr)p_Data, _Data.Length, SampleRate);
|
|
}
|
|
else
|
|
{
|
|
if (BitsPerSample == 8)
|
|
{
|
|
Console.Write("Uploading 8-bit mono data to OpenAL...");
|
|
AL.BufferData(bid, ALFormat.Mono8, (IntPtr)p_Data, _Data.Length, SampleRate);
|
|
}
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
if (Channels == 2)
|
|
{
|
|
if (BitsPerSample == 16)
|
|
{
|
|
Console.Write("Uploading 16-bit stereo data to OpenAL...");
|
|
AL.BufferData(bid, ALFormat.Stereo16, (IntPtr)p_Data, _Data.Length, SampleRate);
|
|
}
|
|
else
|
|
{
|
|
if (BitsPerSample == 8)
|
|
{
|
|
Console.Write("Uploading 8-bit stereo data to OpenAL...");
|
|
AL.BufferData(bid, ALFormat.Stereo8, (IntPtr)p_Data, _Data.Length, SampleRate);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes all relevent information about the WaveSound to the console window.
|
|
/// </summary>
|
|
public void DumpParamsToConsole()
|
|
{
|
|
Console.WriteLine("AudioFormat:" + AudioFormat);
|
|
Console.WriteLine("Channels:" + Channels);
|
|
Console.WriteLine("SampleRate:" + SampleRate);
|
|
Console.WriteLine("ByteRate:" + ByteRate);
|
|
Console.WriteLine("BlockAlign:" + BlockAlign);
|
|
Console.WriteLine("BitsPerSample:" + BitsPerSample);
|
|
}
|
|
|
|
/// <value>
|
|
/// Returns the WaveSound's raw sound data as an array of bytes.
|
|
/// </value>
|
|
public byte[] Data
|
|
{
|
|
get
|
|
{
|
|
return _Data;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#region --- Public Members ---
|
|
|
|
#region public override bool Supports(Stream s)
|
|
|
|
/// <summary>
|
|
/// Checks whether the specified stream contains valid WAVE/RIFF buffer.
|
|
/// </summary>
|
|
/// <param name="s">The System.IO.Stream to check.</param>
|
|
/// <returns>True if the stream is a valid WAVE/RIFF file; false otherwise.</returns>
|
|
public override bool Supports(Stream s)
|
|
{
|
|
BinaryReader reader = new BinaryReader(s);
|
|
return this.ReadHeaders(reader);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public override SoundData ReadSamples(int samples)
|
|
|
|
/// <summary>
|
|
/// Reads and decodes the specified number of samples from the sound stream.
|
|
/// </summary>
|
|
/// <param name="samples">The number of samples to read and decode.</param>
|
|
/// <returns>An OpenTK.Audio.SoundData object that contains the decoded buffer.</returns>
|
|
public override SoundData ReadSamples(long samples)
|
|
{
|
|
if (samples > reader.BaseStream.Length - reader.BaseStream.Position)
|
|
samples = reader.BaseStream.Length - reader.BaseStream.Position;
|
|
|
|
//while (samples > decoded_data.Data.Length * (bits_per_sample / 8))
|
|
// Array.Resize<byte>(ref decoded_data.Data, decoded_data.Data.Length * 2);
|
|
|
|
decoded_data = new SoundData(new SoundFormat(channels, bits_per_sample, sample_rate),
|
|
reader.ReadBytes((int)samples));
|
|
|
|
return decoded_data;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public override SoundData ReadToEnd()
|
|
|
|
/// <summary>
|
|
/// Reads and decodes the sound stream.
|
|
/// </summary>
|
|
/// <returns>An OpenTK.Audio.SoundData object that contains the decoded buffer.</returns>
|
|
public override SoundData ReadToEnd()
|
|
{
|
|
try
|
|
{
|
|
//read the buffer into a byte array, even if the format is 16 bit
|
|
//decoded_data = new byte[data_chunk_size];
|
|
|
|
decoded_data = new SoundData(new SoundFormat(channels, bits_per_sample, sample_rate),
|
|
reader.ReadBytes((int)reader.BaseStream.Length));
|
|
|
|
Debug.WriteLine("decoded!");
|
|
|
|
//return new SoundData(decoded_data, new SoundFormat(channels, bits_per_sample, sample_rate));
|
|
return decoded_data;
|
|
}
|
|
catch (AudioReaderException)
|
|
{
|
|
reader.Close();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region --- Protected Members ---
|
|
|
|
protected override Stream Stream
|
|
{
|
|
get { return base.Stream; }
|
|
set
|
|
{
|
|
base.Stream = value;
|
|
if (!ReadHeaders(reader))
|
|
throw new AudioReaderException("Invalid WAVE/RIFF file: invalid or corrupt signature.");
|
|
|
|
Debug.Write(String.Format("Opened WAVE/RIFF file: ({0}, {1}, {2}, {3}) ", sample_rate.ToString(), bits_per_sample.ToString(),
|
|
channels.ToString(), audio_format.ToString()));
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region --- Private Members ---
|
|
|
|
// Tries to read the WAVE/RIFF headers, and returns true if they are valid.
|
|
bool ReadHeaders(BinaryReader reader)
|
|
{
|
|
// Don't explicitly call reader.Close()/.Dispose(), as that will close the inner stream.
|
|
// There's no such danger if the BinaryReader isn't explicitly destroyed.
|
|
|
|
// RIFF header
|
|
signature = new string(reader.ReadChars(4));
|
|
if (signature != "RIFF")
|
|
return false;
|
|
|
|
riff_chunck_size = reader.ReadInt32();
|
|
|
|
format = new string(reader.ReadChars(4));
|
|
if (format != "WAVE")
|
|
return false;
|
|
|
|
// WAVE header
|
|
format_signature = new string(reader.ReadChars(4));
|
|
if (format_signature != "fmt ")
|
|
return false;
|
|
|
|
format_chunk_size = reader.ReadInt32();
|
|
audio_format = reader.ReadInt16();
|
|
channels = reader.ReadInt16();
|
|
sample_rate = reader.ReadInt32();
|
|
byte_rate = reader.ReadInt32();
|
|
block_align = reader.ReadInt16();
|
|
bits_per_sample = reader.ReadInt16();
|
|
|
|
data_signature = new string(reader.ReadChars(4));
|
|
if (data_signature != "data")
|
|
return false;
|
|
|
|
data_chunk_size = reader.ReadInt32();
|
|
|
|
return true;
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|