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https://github.com/Ryujinx/Opentk.git
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da9497928e
Moved SoundData and SoundFormat to OpenTK.Compatibility. Moved AL and Alc classes to OpenTK.Audio.OpenAL and added the previous namespace to OpenTK.Compatibility. Removed SoundData wrappers from AL class. Updated samples to use the new API.
116 lines
4.2 KiB
C#
116 lines
4.2 KiB
C#
#region --- License ---
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/* Licensed under the MIT/X11 license.
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* Copyright (c) 2006-2008 the OpenTK Team.
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* This notice may not be removed from any source distribution.
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* See license.txt for licensing details.
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*/
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#endregion
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using System;
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using System.Threading;
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using System.IO;
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using OpenTK.Audio;
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using OpenTK.Audio.OpenAL;
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namespace Examples
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{
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[Example("Playback", ExampleCategory.OpenAL, "1.1", Documentation="Playback")]
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public class Playback
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{
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static readonly string filename = Path.Combine(Path.Combine("Data", "Audio"), "the_ring_that_fell.wav");
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// Loads a wave/riff audio file.
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public static byte[] LoadWave(Stream stream, out int channels, out int bits, out int rate)
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{
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if (stream == null)
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throw new ArgumentNullException("stream");
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using (BinaryReader reader = new BinaryReader(stream))
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{
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// RIFF header
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string signature = new string(reader.ReadChars(4));
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if (signature != "RIFF")
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throw new NotSupportedException("Specified stream is not a wave file.");
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int riff_chunck_size = reader.ReadInt32();
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string format = new string(reader.ReadChars(4));
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if (format != "WAVE")
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throw new NotSupportedException("Specified stream is not a wave file.");
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// WAVE header
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string format_signature = new string(reader.ReadChars(4));
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if (format_signature != "fmt ")
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throw new NotSupportedException("Specified wave file is not supported.");
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int format_chunk_size = reader.ReadInt32();
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int audio_format = reader.ReadInt16();
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int num_channels = reader.ReadInt16();
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int sample_rate = reader.ReadInt32();
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int byte_rate = reader.ReadInt32();
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int block_align = reader.ReadInt16();
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int bits_per_sample = reader.ReadInt16();
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string data_signature = new string(reader.ReadChars(4));
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if (data_signature != "data")
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throw new NotSupportedException("Specified wave file is not supported.");
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int data_chunk_size = reader.ReadInt32();
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channels = num_channels;
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bits = bits_per_sample;
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rate = sample_rate;
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return reader.ReadBytes((int)reader.BaseStream.Length);
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}
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}
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public static ALFormat GetSoundFormat(int channels, int bits)
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{
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switch (channels)
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{
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case 1: return bits == 8 ? ALFormat.Mono8 : ALFormat.Mono16;
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case 2: return bits == 8 ? ALFormat.Stereo8 : ALFormat.Stereo16;
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default: throw new NotSupportedException("The specified sound format is not supported.");
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}
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}
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public static void Main()
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{
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using (AudioContext context = new AudioContext())
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{
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Console.WriteLine("Testing WaveReader({0}).ReadToEnd()", filename);
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int buffer = AL.GenBuffer();
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int source = AL.GenSource();
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int state;
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int channels, bits_per_sample, sample_rate;
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byte[] sound_data = LoadWave(File.Open(filename, FileMode.Open), out channels, out bits_per_sample, out sample_rate);
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AL.BufferData(buffer, GetSoundFormat(channels, bits_per_sample), sound_data, sound_data.Length, sample_rate);
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AL.Source(source, ALSourcei.Buffer, buffer);
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AL.SourcePlay(source);
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Console.Write("Playing");
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// Query the source to find out when it stops playing.
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do
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{
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Thread.Sleep(250);
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Console.Write(".");
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AL.GetSource(source, ALGetSourcei.SourceState, out state);
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}
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while ((ALSourceState)state == ALSourceState.Playing);
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Console.WriteLine();
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AL.SourceStop(source);
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AL.DeleteSource(source);
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AL.DeleteBuffer(buffer);
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}
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}
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}
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}
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