/// <summary>
/// Open SFX audio stream by index
/// </summary>
/// <param name="sfxIndex">SFX index</param>
/// <param name="bankIndex">Bank Index</param>
/// <param name="audioClipIndex">Audio clip index</param>
/// <returns>GTA audio stream</returns>
public GTAAudioStream OpenSFXAudioStreamByID(uint sfxIndex, uint bankIndex, uint audioClipIndex)
{
GTAAudioStream ret = null;
if (sfxIndex < sfxAudioFiles.Length)
{
GTAAudioSFXFile sfx_file = sfxAudioFiles[sfxIndex];
if (sfx_file != null)
{
Stream stream = sfx_file.Open(bankIndex, audioClipIndex);
if (stream != null)
{
if (stream is GTAAudioStream)
{
ret = (GTAAudioStream)stream;
}
else
{
stream.Dispose();
}
}
}
}
return(ret);
}
/// <summary>
/// Open audio stream
/// </summary>
/// <param name="bankIndex">Bank index</param>
/// <param name="audioIndex">Audio index</param>
/// <returns>GTA audio stream</returns>
public override Stream Open(uint bankIndex, uint audioIndex)
{
GTAAudioStream ret = null;
if (FileStream != null)
{
if (bankIndex < NumBanks)
{
GTAAudioBankData bank_data = BankData[bankIndex];
if (audioIndex < bank_data.NumAudioClips)
{
GTAAudioAudioClipData audio_clip_data = bank_data.AudioClipData[audioIndex];
uint offset = bank_data.Offset + audio_clip_data.SoundBufferOffset + 0x12C4;
if (FileStream.Length >= (offset + audio_clip_data.Length))
{
byte[] data = new byte[audio_clip_data.Length];
FileStream.Seek(offset, SeekOrigin.Begin);
if (FileStream.Read(data, 0, data.Length) == data.Length)
{
ret = new GTAAudioStream(this, audio_clip_data.SampleRate, audio_clip_data.LoopOffset, audio_clip_data.SoundHeadroom, data);
ret.Seek(0L, SeekOrigin.Begin);
}
}
}
}
}
return(ret);
}
/// <summary>
/// Open SFX audio stream by script event index
/// </summary>
/// <param name="eventIndex"></param>
/// <returns>GTA audio stream if successful, otherwise "null"</returns>
public GTAAudioStream OpenSFXAudioStreamByScriptEventIndex(uint eventIndex)
{
GTAAudioStream ret = null;
if (eventIndex >= 2000U)
{
ret = OpenSFXAudioStreamByName("SCRIPT", (eventIndex - 2000U) / 200U, (eventIndex - 2000) % 200);
}
return(ret);
}
/// <summary>
/// Open SFX audio stream by name
/// </summary>
/// <param name="sfxName">SFX name</param>
/// <param name="bankIndex">Bank index</param>
/// <param name="audioClipIndex">Audio clip index</param>
/// <returns>GTA audio stream if successful, otherwise "null"</returns>
public GTAAudioStream OpenSFXAudioStreamByName(string sfxName, uint bankIndex, uint audioClipIndex)
{
GTAAudioStream ret = null;
if (sfxName != null)
{
string key = sfxName.Trim().ToLower();
if (sfxFilesLookup.ContainsKey(key))
{
ret = OpenSFXAudioStreamByID(sfxFilesLookup[key], bankIndex, audioClipIndex);
}
}
return(ret);
}