static void ReadWriteAudio(string input, string output)
{
var audio = new AudioReader(input);
audio.LoadMetadataAsync().Wait();
audio.Load();
using (var writer = new AudioWriter(output, audio.Metadata.Channels, audio.Metadata.SampleRate))
{
writer.OpenWrite(true);
var frame = new AudioFrame(1);
while (true)
{
// read next sample
var f = audio.NextFrame(frame);
if (f == null)
{
break;
}
writer.WriteFrame(frame);
}
}
}
public async Task ConversionStreamTest()
{
var path = Res.GetPath(Res.Audio_Mp3);
var opath = "out-test-v-2.aac";
try
{
using var reader = new AudioReader(path);
await reader.LoadMetadataAsync();
var encoder = new AACEncoder
{
Format = "flv"
};
using (var filestream = File.Create(opath))
{
using (var writer = new AudioWriter(filestream,
reader.Metadata.Channels,
reader.Metadata.SampleRate, 16,
encoder.Create()))
{
writer.OpenWrite();
reader.Load();
await reader.CopyToAsync(writer);
}
}
using var audio = new AudioReader(opath);
await audio.LoadMetadataAsync();
Assert.True(audio.Metadata.Format.FormatName == "flv");
Assert.True(audio.Metadata.Channels == 2);
Assert.True(audio.Metadata.Streams.Length == 1);
Assert.True(Math.Abs(audio.Metadata.Duration - 1.515102) < 0.2);
}
finally
{
if (File.Exists(opath))
{
File.Delete(opath);
}
}
}
public async Task ConversionTest()
{
var path = Res.GetPath(Res.Audio_Ogg);
var opath = "out-test-2.mp3";
try
{
using var reader = new AudioReader(path);
await reader.LoadMetadataAsync();
using (var writer = new AudioWriter(opath,
reader.Metadata.Channels,
reader.Metadata.SampleRate, 16,
new MP3Encoder().Create()))
{
writer.OpenWrite();
reader.Load();
await reader.CopyToAsync(writer);
}
using var audio = new AudioReader(opath);
await audio.LoadMetadataAsync();
Assert.True(audio.Metadata.Format.FormatName == "mp3");
Assert.True(audio.Metadata.Channels == 2);
Assert.True(audio.Metadata.Streams.Length == 1);
Assert.True(Math.Abs(audio.Metadata.Duration - 1.515102) < 0.2);
}
finally
{
if (File.Exists(opath))
{
File.Delete(opath);
}
}
}