public IntPtr LoadAudioStreamFromUrl(string url, string cacheDirectory)
{
lock (audioUrlStreamLoaderLockObject) {
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url))
{
return(audioDataCache[url].AudioStreamPointer);
}
}
AudioDataCache dataCache = new AudioDataCache();
dataCache.CachePath = cacheDirectory + Path.GetFileName(url);
dataCache.CacheStream = new FileStream(dataCache.CachePath + ".tmp", FileMode.Create, FileAccess.Write);
dataCache.CallbackDelegate = new DownloadCallbackDelegate(AudioDownloadCallback);
IntPtr urlPtr = Marshal.StringToHGlobalUni(url);
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url) == false)
{
audioDataCache.Add(url, dataCache);
}
else
{
dataCache.CallbackDelegate = null;
if (urlPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(urlPtr);
urlPtr = IntPtr.Zero;
}
}
}
dataCache.AudioStreamPointer = Bass.BASS_StreamCreateURL(url, 0, 0, dataCache.CallbackDelegate, urlPtr);
if (dataCache.AudioStreamPointer == IntPtr.Zero)
{
// Uh oh! We couldn't play the sfx stream!
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url))
{
audioDataCache.RemoveAtKey(url);
}
if (urlPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(urlPtr);
urlPtr = IntPtr.Zero;
}
}
dataCache.CacheStream.Close();
File.Delete(dataCache.CachePath + ".tmp");
dataCache.CachePath = null;
}
return(dataCache.AudioStreamPointer);
}
}
public void AudioDownloadCallback(IntPtr bufferPointer, int length, IntPtr user)
{
try
{
AudioDataCache dataCache = null;
string url = Marshal.PtrToStringUni(user);
lock (audioDataCache)
{
if (audioDataCache.ContainsKey(url))
{
dataCache = audioDataCache[url];
}
}
if (dataCache != null)
{
if (length > 0)
{
byte[] buffer = new byte[length];
Marshal.Copy(bufferPointer, buffer, 0, length);
dataCache.CacheStream.Write(buffer, 0, length);
}
else if (length == 0)
{
Marshal.FreeHGlobal(user);
dataCache.CacheStream.Close();
lock (audioDataCache)
{
if (audioDataCache.ContainsKey(url))
{
audioDataCache.RemoveAtKey(url);
}
}
if (dataCache.AudioStreamPointer != IntPtr.Zero)
{
File.Copy(dataCache.CachePath + ".tmp", dataCache.CachePath, true);
}
File.Delete(dataCache.CachePath + ".tmp");
}
}
}
catch (Exception ex)
{
throw new Exception(ex.Message + " @ Audio Download Callback");
}
}
public IntPtr LoadAudioStreamFromUrl(string url, string cacheDirectory)
{
lock (audioUrlStreamLoaderLockObject) {
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url)) {
return audioDataCache[url].AudioStreamPointer;
}
}
AudioDataCache dataCache = new AudioDataCache();
dataCache.CachePath = cacheDirectory + Path.GetFileName(url);
dataCache.CacheStream = new FileStream(dataCache.CachePath + ".tmp", FileMode.Create, FileAccess.Write);
dataCache.CallbackDelegate = new DownloadCallbackDelegate(AudioDownloadCallback);
IntPtr urlPtr = Marshal.StringToHGlobalUni(url);
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url) == false) {
audioDataCache.Add(url, dataCache);
} else {
dataCache.CallbackDelegate = null;
if (urlPtr != IntPtr.Zero) {
Marshal.FreeHGlobal(urlPtr);
urlPtr = IntPtr.Zero;
}
}
}
dataCache.AudioStreamPointer = Bass.BASS_StreamCreateURL(url, 0, 0, dataCache.CallbackDelegate, urlPtr);
if (dataCache.AudioStreamPointer == IntPtr.Zero) {
// Uh oh! We couldn't play the sfx stream!
lock (audioDataCache) {
if (audioDataCache.ContainsKey(url)) {
audioDataCache.RemoveAtKey(url);
}
if (urlPtr != IntPtr.Zero) {
Marshal.FreeHGlobal(urlPtr);
urlPtr = IntPtr.Zero;
}
}
dataCache.CacheStream.Close();
File.Delete(dataCache.CachePath + ".tmp");
dataCache.CachePath = null;
}
return dataCache.AudioStreamPointer;
}
}
