internal FileBasedAudioSource(string filePath, bool decodeWhole)
{
RwOpsHandle = SDL2.SDL_RWFromFile(filePath, "rb");
if (RwOpsHandle == IntPtr.Zero)
{
_log.Error($"Failed to initialize RWops from file: {SDL2.SDL_GetError()}");
return;
}
FileSourceHandle = SDL2_nmix.NMIX_NewFileSource(
RwOpsHandle,
Path.GetExtension(filePath).TrimStart('.'),
decodeWhole
);
if (FileSourceHandle == IntPtr.Zero)
{
_log.Error($"Failed to initialize audio source from file: {SDL2.SDL_GetError()}");
return;
}
unsafe
{
Handle = FileSource->source;
}
HookSourceCallback();
}
public override void Play()
{
EnsureHandleValid();
if (Status == PlaybackStatus.Playing)
{
if (SDL2_nmix.NMIX_Pause(Handle) < 0)
{
_log.Error($"Failed to play the audio source [pause]: {SDL2.SDL_GetError()}");
return;
}
if (SDL2_nmix.NMIX_Rewind(FileSourceHandle) < 0)
{
_log.Error($"Failed to play the audio source [rewind]: {SDL2.SDL_GetError()}");
return;
}
Status = PlaybackStatus.Stopped;
}
if (SDL2_nmix.NMIX_Play(Handle) < 0)
{
_log.Error($"Failed to play the audio source [play]: {SDL2.SDL_GetError()}");
return;
}
Status = PlaybackStatus.Playing;
}
public void Seek(int milliseconds)
{
EnsureFileSourceHandleValid();
if (SDL2_nmix.NMIX_Seek(FileSourceHandle, milliseconds) < 0)
{
_log.Error($"Failed to seek to {milliseconds}ms: {SDL2.SDL_GetError()}");
}
}
public void Rewind()
{
EnsureFileSourceHandleValid();
if (SDL2_nmix.NMIX_Rewind(FileSourceHandle) < 0)
{
_log.Error($"Failed to rewind the requested audio source: {SDL2.SDL_GetError()}");
}
}
protected override void FreeNativeResources()
{
if (FileSourceHandle != IntPtr.Zero)
{
SDL2_nmix.NMIX_FreeFileSource(Handle);
FileSourceHandle = IntPtr.Zero;
}
if (RwOpsHandle != IntPtr.Zero)
{
SDL2.SDL_FreeRW(RwOpsHandle);
RwOpsHandle = IntPtr.Zero;
}
}
internal FileBasedAudioSource(Stream stream, bool decodeWhole)
{
using (var ms = new MemoryStream())
{
stream.CopyTo(ms);
var arr = ms.ToArray();
unsafe
{
fixed(byte *b = &arr[0])
{
RwOpsHandle = SDL2.SDL_RWFromConstMem(
new IntPtr(b),
arr.Length
);
if (RwOpsHandle == IntPtr.Zero)
{
_log.Error($"Failed to initialize RWops from stream: {SDL2.SDL_GetError()}");
return;
}
foreach (var decoder in AudioManager.Instance.Decoders)
{
foreach (var format in decoder.SupportedFormats)
{
SDL2.SDL_RWseek(RwOpsHandle, 0, SDL2.RW_SEEK_SET);
FileSourceHandle = SDL2_nmix.NMIX_NewFileSource(RwOpsHandle, format, decodeWhole);
if (FileSourceHandle != IntPtr.Zero)
{
break;
}
}
}
if (FileSourceHandle == IntPtr.Zero)
{
_log.Error($"Failed to initialize audio source from stream: {SDL2.SDL_GetError()}");
return;
}
Handle = FileSource->source;
}
}
}
HookSourceCallback();
}
public Waveform(AudioFormat format, AudioStreamDelegate sampleGenerator, ChannelMode channelMode = ChannelMode.Stereo, int frequency = 44100)
{
_internalCallback = AudioCallback;
SampleGenerator = sampleGenerator;
ChannelMode = channelMode;
Frequency = frequency;
Handle = SDL2_nmix.NMIX_NewSource(
format.SdlFormat,
(byte)ChannelMode,
Frequency,
_internalCallback,
IntPtr.Zero
);
}
