mirror of
https://github.com/GTA-ASM/SanAndreasUnity
synced 2024-12-12 21:52:32 +00:00
265 lines
7.7 KiB
C#
265 lines
7.7 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using GTAAudioSharp;
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using System.IO;
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using SanAndreasUnity.Audio;
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namespace SanAndreasUnity.Behaviours.Audio
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{
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public class AudioManager : MonoBehaviour
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{
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public static AudioManager Instance { get; private set; }
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private static GTAAudioFiles s_gtaAudioFiles;
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public static GTAAudioFiles AudioFiles { get { return s_gtaAudioFiles; } }
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// private Dictionary<string, AudioClip> sfxAudioClips = new Dictionary<string, AudioClip>();
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// private Dictionary<string, AudioClip> streamsAudioClips = new Dictionary<string, AudioClip>();
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// private Dictionary<string, AudioStream> streamsAudioStreams = new Dictionary<string, AudioStream>();
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public bool playStartupSound = true;
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public float startupSoundTimeOffset = 0f;
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static AudioSource s_startupAudioSource;
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public const int kSfxSampleSize = 2;
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// static AudioClip s_sfxGENRLClip;
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// public static AudioClip SfxGENRLClip { get { return s_sfxGENRLClip; } }
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// describes single sound inside sfx bank
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public struct SfxBankAudioData
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{
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public int startTimeMs;
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// public int lengthMs;
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// public float lengthSeconds { get { return this.lengthMs / 1000f; } }
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public int bitrateKbs; // kb/s
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public int offsetInBytes;
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public int bitsPerSecond { get { return this.bitrateKbs * 1000; } }
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public float bytesPerSecond { get { return this.bitsPerSecond / 8f; } }
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// public int sizeInBytes { get { return Mathf.RoundToInt( this.lengthSeconds * this.bytesPerSecond ); } }
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public int sizeInBytes;
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}
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static SfxBankAudioData[] s_sfxGENRL137Timings;
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public static SfxBankAudioData[] SfxGENRL137Timings { get { return s_sfxGENRL137Timings; } }
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void Awake ()
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{
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Instance = this;
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}
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void OnDisable ()
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{
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if (s_gtaAudioFiles != null)
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{
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s_gtaAudioFiles.Dispose ();
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s_gtaAudioFiles = null;
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}
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}
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void Start () {
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}
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void OnLoaderFinished ()
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{
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if (s_startupAudioSource != null)
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{
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Destroy (s_startupAudioSource.gameObject);
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}
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}
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void Update () {
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}
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public static void InitFromLoader ()
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{
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s_gtaAudioFiles = GTAAudio.OpenRead (Path.Combine (Utilities.Config.GamePath, "audio"));
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s_sfxGENRL137Timings = LoadSfxBankTimings (Path.Combine (Utilities.Config.DataPath, "SFX_GENRL_137.txt"));
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if (Instance.playStartupSound)
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{
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s_startupAudioSource = PlayStream ("Beats", 1);
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if (s_startupAudioSource != null)
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s_startupAudioSource.time = Instance.startupSoundTimeOffset;
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}
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// s_sfxGENRLClip = CreateAudioClipFromSfx ("GENRL", 136, 0);
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}
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public static SfxBankAudioData[] LoadSfxBankTimings (string filePath)
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{
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// int sampleSize = 2;
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System.IFormatProvider formatProvider = System.Globalization.CultureInfo.InvariantCulture;
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var lines = File.ReadAllLines (filePath);
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SfxBankAudioData[] datas = new SfxBankAudioData[(lines.Length - 1)]; // skip last line
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// int currentTime = 0;
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float currentOffset = 0;
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for (int i = 0, lineIndex = 0; i < datas.Length; i++)
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{
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string[] splits = lines [lineIndex++].Split (' ');
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// datas [i].startTimeMs = currentTime;
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// datas [i].offsetInBytes = Mathf.RoundToInt (currentOffset);
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// int clipLengthMs = int.Parse (lines [lineIndex++], formatProvider);
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// datas [i].lengthMs = clipLengthMs;
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// int bitrate = 288;//int.Parse (lines [lineIndex++], formatProvider);
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// lineIndex ++;
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// datas [i].bitrateKbs = bitrate;
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// currentTime += clipLengthMs;
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// currentOffset += (clipLengthMs / 1000f) * (bitrate * 1000f / 8f);
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datas [i].offsetInBytes = int.Parse (splits [0]);
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datas [i].sizeInBytes = int.Parse (splits [1]);
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datas [i].bitrateKbs = Mathf.RoundToInt( FreqToKbs( int.Parse (splits [2]) ) );
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}
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// Debug.LogFormat ("sfx timings loaded - current offset {0}", currentOffset);
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return datas;
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}
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public static AudioClip CreateAudioClipFromStream (string streamFileName, int bankIndex)
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{
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AudioStream audio_stream = null;
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System.DateTime startTime = System.DateTime.Now;
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int streams_bank_index = bankIndex;
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string streams_file_name = streamFileName;
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string key = streams_file_name + "." + streams_bank_index;
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if ((s_gtaAudioFiles != null) && (streams_bank_index >= 0))
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{
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try
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{
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Stream stream = s_gtaAudioFiles.OpenStreamsAudioStreamByName(streams_file_name, (uint)streams_bank_index);
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if (stream != null)
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{
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audio_stream = new AudioStream(stream, key, true);
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}
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}
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catch (System.Exception e)
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{
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Debug.LogError(e);
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}
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}
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if (audio_stream != null)
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{
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System.TimeSpan time_span = System.DateTime.Now - startTime;
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Debug.Log("\"" + key + "\" took " + time_span.TotalSeconds + " seconds.");
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return audio_stream.AudioClip;
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}
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return null;
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}
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public static AudioSource PlayStream (string streamFileName, int bankIndex)
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{
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var clip = CreateAudioClipFromStream (streamFileName, bankIndex);
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if (clip != null)
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{
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AudioSource audioSource = new GameObject (streamFileName + "." + bankIndex).AddComponent<AudioSource> ();
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audioSource.time = 0.0f;
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audioSource.clip = clip;
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audioSource.Play();
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// destroy game object when sound is finished playing
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Destroy( audioSource.gameObject, clip.length );
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return audioSource;
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}
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return null;
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}
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public static AudioClip CreateAudioClipFromSfx (string sfxFileName, int bankIndex, int audioIndex, SfxBankAudioData? sfxBankAudioData)
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{
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if (null == s_gtaAudioFiles || bankIndex < 0 || audioIndex < 0)
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return null;
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AudioClip ret = null;
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string clipName = sfxFileName + "." + bankIndex + "." + audioIndex;
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try
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{
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using (GTAAudioStream audio_stream = s_gtaAudioFiles.OpenSFXAudioStreamByName(sfxFileName, (uint)bankIndex, (uint)audioIndex))
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{
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if (audio_stream != null)
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{
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// this audio stream holds all sounds from this bank
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int freq = sfxBankAudioData.HasValue ? Mathf.RoundToInt( KbsToFreq( sfxBankAudioData.Value.bitrateKbs ) ) : audio_stream.SampleRate ;
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int offsetInBytes = sfxBankAudioData.HasValue ? sfxBankAudioData.Value.offsetInBytes : 0 ;
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int sizeInBytes = sfxBankAudioData.HasValue ? sfxBankAudioData.Value.sizeInBytes : (int) audio_stream.Length ;
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ret = CreateAudioClipFromSfx (clipName, audio_stream, offsetInBytes, sizeInBytes, freq);
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}
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}
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}
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catch (System.Exception e)
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{
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Debug.LogError(e);
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}
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return ret;
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}
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public static AudioClip CreateAudioClipFromSfx (string clipName, GTAAudioStream audio_stream, int offsetInBytes, int sizeInBytes, int frequency)
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{
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AudioClip ret = null;
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audio_stream.Position = offsetInBytes;
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byte[] int_pcm = new byte[sizeInBytes];
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if (audio_stream.Read(int_pcm, 0, int_pcm.Length) == int_pcm.Length)
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{
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float[] float_pcm = new float[int_pcm.Length / sizeof(short)];
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for (int i = 0; i < float_pcm.Length; i++)
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{
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float_pcm[i] = Mathf.Clamp(((short)(int_pcm[i * sizeof(short)] | (int_pcm[(i * sizeof(short)) + 1] << 8)) / 32767.5f), -1.0f, 1.0f);
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}
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ret = AudioClip.Create(clipName, float_pcm.Length, 1, frequency, false);
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ret.SetData(float_pcm, 0);
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// Debug.LogFormat("loaded sfx: name {0}, offset {1}, size {2}, length {3}, bitrate Kb/s {4}, stream size {5}, freq {6}",
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// clipName, offsetInBytes, sizeInBytes, ret.length,
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// FreqToKbs (frequency), audio_stream.Length, frequency);
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}
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return ret;
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}
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static float FreqToKbs(int freq)
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{
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return freq * kSfxSampleSize * 8f / 1000f;
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}
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static float KbsToFreq(float kbs)
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{
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return kbs / 8f * 1000f / kSfxSampleSize;
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}
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}
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}
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