/// <summary> Creates a new Opus encoder. </summary>
/// <param name="samplingRate">Sampling rate of the input signal (Hz). Supported Values: 8000, 12000, 16000, 24000, or 48000</param>
/// <param name="channels">Number of channels in input signal. Supported Values: 1 or 2</param>
/// <param name="frameLength">Length, in milliseconds, that each frame takes. Supported Values: 2.5, 5, 10, 20, 40, 60</param>
/// <param name="bitrate">Bitrate (kbit/s) used for this encoder. Supported Values: 1-512. Null will use the recommended bitrate. </param>
/// <param name="application">Coding mode.</param>
public OpusEncoder(int samplingRate, int channels, int frameLength, int?bitrate, OpusApplication application)
: base(samplingRate, channels, frameLength)
{
if (bitrate != null && (bitrate < 1 || bitrate > 320)) //idk good averagee i guess
{
throw new ArgumentOutOfRangeException(nameof(bitrate));
}
BitRate = bitrate;
Application = application;
OpusError error;
_ptr = UnsafeNativeMethods.CreateEncoder(samplingRate, channels, (int)application, out error);
if (error != OpusError.OK)
{
throw new InvalidOperationException($"Error occured while creating encoder: {error}");
}
SetForwardErrorCorrection(true);
if (bitrate != null)
{
SetBitrate(bitrate.Value);
}
}
/// <summary> Creates a new Opus encoder. </summary>
/// <param name="samplingRate">Sampling rate of the input signal (Hz). Supported Values: 8000, 12000, 16000, 24000, or 48000.</param>
/// <param name="channels">Number of channels (1 or 2) in input signal.</param>
/// <param name="frameLength">Length, in milliseconds, that each frame takes. Supported Values: 2.5, 5, 10, 20, 40, 60</param>
/// <param name="bitrate">Bitrate (kbit/s) used for this encoder. Supported Values: 1-512. Null will use the recommended bitrate. </param>
/// <param name="application">Coding mode.</param>
/// <returns>A new <c>OpusEncoder</c></returns>
public OpusEncoder(int samplingRate, int channels, int frameLength, int? bitrate, OpusApplication application)
{
if (samplingRate != 8000 && samplingRate != 12000 &&
samplingRate != 16000 && samplingRate != 24000 &&
samplingRate != 48000)
throw new ArgumentOutOfRangeException(nameof(samplingRate));
if (channels != 1 && channels != 2)
throw new ArgumentOutOfRangeException(nameof(channels));
if (bitrate != null && (bitrate < 1 || bitrate > 512))
throw new ArgumentOutOfRangeException(nameof(bitrate));
InputSamplingRate = samplingRate;
InputChannels = channels;
Application = application;
FrameLength = frameLength;
SampleSize = (BitsPerSample / 8) * channels;
SamplesPerFrame = samplingRate / 1000 * FrameLength;
FrameSize = SamplesPerFrame * SampleSize;
BitRate = bitrate;
OpusError error;
_ptr = UnsafeNativeMethods.CreateEncoder(samplingRate, channels, (int)application, out error);
if (error != OpusError.OK)
throw new InvalidOperationException($"Error occured while creating encoder: {error}");
SetForwardErrorCorrection(true);
if (bitrate != null)
SetBitrate(bitrate.Value);
}
public void UpdateApplication(OpusApplication app)
{
_codecParamLock.WaitOne();
_application = app;
_codecParamChanged = true;
_codecParamLock.ReleaseMutex();
}
/// <summary>
/// Creates a multichannel Opus encoder using the "new API". This constructor allows you to use predefined Vorbis channel mappings, or specify your own.
/// </summary>
/// <param name="Fs">The samples rate of the input</param>
/// <param name="channels">The total number of channels to encode (1 - 255)</param>
/// <param name="mapping_family">The mapping family to use. 0 = mono/stereo, 1 = use Vorbis mappings, 255 = use raw channel mapping</param>
/// <param name="streams">The number of streams to encode</param>
/// <param name="coupled_streams">The number of coupled streams</param>
/// <param name="mapping">A raw mapping of input/output channels</param>
/// <param name="application">The application to use for the encoders</param>
public static OpusMSEncoder CreateSurround(
int Fs,
int channels,
int mapping_family,
out int streams,
out int coupled_streams,
byte[] mapping,
OpusApplication application
)
{
int ret;
OpusMSEncoder st;
if ((channels > 255) || (channels < 1) || application == OpusApplication.OPUS_APPLICATION_UNIMPLEMENTED)
{
throw new ArgumentException("Invalid channel count or application");
}
BoxedValueInt nb_streams = new BoxedValueInt();
BoxedValueInt nb_coupled_streams = new BoxedValueInt();
GetStreamCount(channels, mapping_family, nb_streams, nb_coupled_streams);
st = new OpusMSEncoder(nb_streams.Val, nb_coupled_streams.Val);
ret = st.opus_multistream_surround_encoder_init(Fs, channels, mapping_family, out streams, out coupled_streams, mapping, application);
if (ret != OpusError.OPUS_OK)
{
if (ret == OpusError.OPUS_BAD_ARG)
{
throw new ArgumentException("Bad argument passed to CreateSurround");
}
throw new OpusException("Could not create multistream encoder", ret);
}
return(st);
}
/// <summary>
/// Creates a new multichannel Opus encoder using the "old API".
/// </summary>
/// <param name="Fs">The sample rate of the input signal</param>
/// <param name="channels">The number of channels to encode (1 - 255)</param>
/// <param name="streams">The number of streams to encode</param>
/// <param name="coupled_streams">The number of coupled streams</param>
/// <param name="mapping">A raw mapping between input and output channels</param>
/// <param name="application">The application to use for the encoder</param>
public static OpusMSEncoder Create(
int Fs,
int channels,
int streams,
int coupled_streams,
byte[] mapping,
OpusApplication application
)
{
int ret;
if ((channels > 255) || (channels < 1) || (coupled_streams > streams) ||
(streams < 1) || (coupled_streams < 0) || (streams > 255 - coupled_streams))
{
throw new ArgumentException("Invalid channel / stream configuration");
}
OpusMSEncoder st = new OpusMSEncoder(streams, coupled_streams);
ret = st.opus_multistream_encoder_init(Fs, channels, streams, coupled_streams, mapping, application, 0);
if (ret != OpusError.OPUS_OK)
{
if (ret == OpusError.OPUS_BAD_ARG)
{
throw new ArgumentException("OPUS_BAD_ARG when creating MS encoder");
}
throw new OpusException("Could not create MS encoder", ret);
}
return(st);
}
public OpusEncoder(int samples, int bit_rate, int channels, OpusApplication application, IAudioEncoderCallback encoder_callback)
{
this.samples = samples;
bitRate = bit_rate;
this.channels = channels;
opusApplication = application;
frameSize = CodecTools.getPcmFrameByteSize(samples, 16, channels) * 20;
encodedDataCallback = encoder_callback;
}
internal OpusEncodeStream(AudioClient audioClient, byte[] secretKey, int samplesPerFrame, uint ssrc, int?bitrate = null,
OpusApplication application = OpusApplication.MusicOrMixed, int bufferSize = 4000)
: base(audioClient, secretKey, samplesPerFrame, ssrc, bufferSize)
{
_encoder = new OpusEncoder(SampleRate, Channels);
_encoder.SetForwardErrorCorrection(true);
if (bitrate != null)
{
_encoder.SetBitrate(bitrate.Value);
}
}
private static string PrintApplication(OpusApplication app)
{
if (app == OpusApplication.OPUS_APPLICATION_AUDIO)
{
return("Music ");
}
else if (app == OpusApplication.OPUS_APPLICATION_VOIP)
{
return("Voip ");
}
return("LowDelay");
}
public OpusEncoder(int samplingRate, int channels, OpusApplication application = OpusApplication.MusicOrMixed)
: base(samplingRate, channels)
{
Application = application;
OpusError error;
_ptr = CreateEncoder(samplingRate, channels, (int)application, out error);
if (error != OpusError.OK)
{
throw new Exception($"Opus Error: {error}");
}
}
/// <summary> Creates a new Opus encoder. </summary>
/// <param name="samplingRate">Sampling rate of the input signal (Hz). Supported Values: 8000, 12000, 16000, 24000, or 48000</param>
/// <param name="channels">Number of channels in input signal. Supported Values: 1 or 2</param>
/// <param name="frameLength">Length, in milliseconds, that each frame takes. Supported Values: 2.5, 5, 10, 20, 40, 60</param>
/// <param name="bitrate">Bitrate (kbit/s) used for this encoder. Supported Values: 1-512. Null will use the recommended bitrate. </param>
/// <param name="application">Coding mode.</param>
public OpusEncoder(int samplingRate, int channels, int frameLength, int? bitrate, OpusApplication application)
: base(samplingRate, channels, frameLength)
{
if (bitrate != null && (bitrate < 1 || bitrate > 512))
throw new ArgumentOutOfRangeException(nameof(bitrate));
BitRate = bitrate;
Application = application;
OpusError error;
_ptr = UnsafeNativeMethods.CreateEncoder(samplingRate, channels, (int)application, out error);
if (error != OpusError.OK)
throw new InvalidOperationException($"Error occured while creating encoder: {error}");
SetForwardErrorCorrection(true);
if (bitrate != null)
SetBitrate(bitrate.Value);
}
internal static IntPtr opus_encoder_create(int sampleRate, int channelCount, OpusApplication application, out OpusErrors error)
{
int size = opus_encoder_get_size(channelCount);
IntPtr ptr = Marshal.AllocHGlobal(size);
error = opus_encoder_init(ptr, sampleRate, channelCount, (int)application);
if (error != OpusErrors.Ok)
{
if (ptr != IntPtr.Zero)
{
destroy_opus(ptr);
ptr = IntPtr.Zero;
}
}
return(ptr);
}
public Encoder(
SamplingFrequency samplingFrequency,
NumChannels channels,
OpusApplication application)
{
this.channels = channels;
ErrorCode error;
encoder = Library.OpusEncoderCreate(
samplingFrequency,
channels,
application,
out error);
if (error != ErrorCode.OK)
{
UnityEngine.Debug.LogError("[UnityOpus] Failed to init encoder. Error code: " + error.ToString());
encoder = IntPtr.Zero;
}
}
/// <summary> Creates a new Opus encoder. </summary>
/// <param name="samplingRate">Sampling rate of the input signal (Hz). Supported Values: 8000, 12000, 16000, 24000, or 48000.</param>
/// <param name="channels">Number of channels (1 or 2) in input signal.</param>
/// <param name="frameLength">Length, in milliseconds, that each frame takes. Supported Values: 2.5, 5, 10, 20, 40, 60</param>
/// <param name="bitrate">Bitrate (kbit/s) used for this encoder. Supported Values: 1-512. Null will use the recommended bitrate. </param>
/// <param name="application">Coding mode.</param>
/// <returns>A new <c>OpusEncoder</c></returns>
public OpusEncoder(int samplingRate, int channels, int frameLength, int?bitrate, OpusApplication application)
{
if (samplingRate != 8000 && samplingRate != 12000 &&
samplingRate != 16000 && samplingRate != 24000 &&
samplingRate != 48000)
{
throw new ArgumentOutOfRangeException(nameof(samplingRate));
}
if (channels != 1 && channels != 2)
{
throw new ArgumentOutOfRangeException(nameof(channels));
}
if (bitrate != null && (bitrate < 1 || bitrate > 512))
{
throw new ArgumentOutOfRangeException(nameof(bitrate));
}
InputSamplingRate = samplingRate;
InputChannels = channels;
Application = application;
FrameLength = frameLength;
SampleSize = (BitsPerSample / 8) * channels;
SamplesPerFrame = samplingRate / 1000 * FrameLength;
FrameSize = SamplesPerFrame * SampleSize;
BitRate = bitrate;
OpusError error;
_ptr = UnsafeNativeMethods.CreateEncoder(samplingRate, channels, (int)application, out error);
if (error != OpusError.OK)
{
throw new InvalidOperationException($"Error occured while creating encoder: {error}");
}
SetForwardErrorCorrection(true);
if (bitrate != null)
{
SetBitrate(bitrate.Value);
}
}
/// <summary>
/// Creates a new Opus encoder.
/// </summary>
/// <param name="inputSamplingRate">Sampling rate of the input signal (Hz). This must be one of 8000, 12000, 16000, 24000, or 48000.</param>
/// <param name="inputChannels">Number of channels (1 or 2) in input signal.</param>
/// <param name="application">Coding mode.</param>
/// <returns>A new <c>OpusEncoder</c></returns>
public OpusEncoder(int inputSamplingRate, int inputChannels, OpusApplication application)
{
if (inputSamplingRate != 8000 &&
inputSamplingRate != 12000 &&
inputSamplingRate != 16000 &&
inputSamplingRate != 24000 &&
inputSamplingRate != 48000)
throw new ArgumentOutOfRangeException("inputSamplingRate");
if (inputChannels != 1 && inputChannels != 2)
throw new ArgumentOutOfRangeException("inputChannels");
IntPtr error;
this._encoder = Wrapper.opus_encoder_create(inputSamplingRate, inputChannels, (int)application, out error);
if ((Errors)error != Errors.OK)
throw new Exception("Exception occured while creating encoder");
this.InputSamplingRate = inputSamplingRate;
this.InputChannels = inputChannels;
this.Application = application;
this.MaxDataBytes = 4000;
}
public static extern IntPtr OpusEncoderCreate(
SamplingFrequency samplingFrequency,
NumChannels channels,
OpusApplication application,
out ErrorCode error);
public OpusEncodeStream CreatePCMStream(int samplesPerFrame, int?bitrate = null,
OpusApplication application = OpusApplication.MusicOrMixed, int bufferSize = 4000)
{
return(new OpusEncodeStream(this, _secretKey, samplesPerFrame, _ssrc, bitrate, application, bufferSize));
}
public static void Main(string[] args)
{
LoadTestFile(8, false);
LoadTestFile(12, false);
LoadTestFile(16, false);
LoadTestFile(24, false);
LoadTestFile(48, false);
LoadTestFile(8, true);
LoadTestFile(12, true);
LoadTestFile(16, true);
LoadTestFile(24, true);
LoadTestFile(48, true);
OpusApplication[] Applications = new OpusApplication[] { OpusApplication.OPUS_APPLICATION_AUDIO, OpusApplication.OPUS_APPLICATION_VOIP, OpusApplication.OPUS_APPLICATION_RESTRICTED_LOWDELAY };
int[] Bitrates = new int[] { -1, 6, 16, 20, 32, 64, 500 };
int[] Channels = new int[] { 1, 2 };
int[] Complexities = new int[] { 0, 2, 4, 6, 8, 10 };
int[] SampleRates = new int[] { 8000, 12000, 16000, 24000, 48000 };
double[] FrameSizes = new double[] { 2.5, 5, 10, 20, 40, 60 };
int[] PacketLosses = new int[] { 0, 20 };
OpusMode[] ForceModes = new OpusMode[] { OpusMode.MODE_AUTO, OpusMode.MODE_CELT_ONLY, OpusMode.MODE_SILK_ONLY };
bool[] DTXModes = new bool[] { false, true };
int[] VBRModes = new int[] { 0, 1, 2 };
IList <TestParameters> allTests = new List <TestParameters>();
for (int app_idx = 0; app_idx < Applications.Length; app_idx++)
{
for (int plc_idx = 0; plc_idx < PacketLosses.Length; plc_idx++)
{
for (int chan_idx = 0; chan_idx < Channels.Length; chan_idx++)
{
for (int sr_idx = 0; sr_idx < SampleRates.Length; sr_idx++)
{
for (int fs_idx = 0; fs_idx < FrameSizes.Length; fs_idx++)
{
for (int cpx_idx = 0; cpx_idx < Complexities.Length; cpx_idx++)
{
for (int bit_idx = 0; bit_idx < Bitrates.Length; bit_idx++)
{
for (int fm_idx = 0; fm_idx < ForceModes.Length; fm_idx++)
{
for (int dtx_idx = 0; dtx_idx < DTXModes.Length; dtx_idx++)
{
for (int vbr_idx = 0; vbr_idx < VBRModes.Length; vbr_idx++)
{
TestParameters newParams = new TestParameters()
{
Application = Applications[app_idx],
Bitrate = Bitrates[bit_idx],
Channels = Channels[chan_idx],
Complexity = Complexities[cpx_idx],
PacketLossPercent = PacketLosses[plc_idx],
SampleRate = SampleRates[sr_idx],
FrameSize = FrameSizes[fs_idx],
ForceMode = ForceModes[fm_idx],
UseDTX = DTXModes[dtx_idx]
};
if (VBRModes[vbr_idx] == 0)
{
newParams.UseVBR = false;
newParams.ConstrainedVBR = false;
}
else if (VBRModes[vbr_idx] == 1)
{
newParams.UseVBR = true;
newParams.ConstrainedVBR = false;
}
else if (VBRModes[vbr_idx] == 2)
{
newParams.UseVBR = true;
newParams.ConstrainedVBR = true;
}
// Validate params
if (newParams.Bitrate > 40 || newParams.FrameSize < 10)
{
// No FEC outside of SILK mode
if (newParams.PacketLossPercent > 0)
{
continue;
}
// No DTX outside of SILK mode
if (newParams.UseDTX)
{
continue;
}
if (newParams.ForceMode == OpusMode.MODE_SILK_ONLY)
{
continue;
}
}
// Constrained VBR only applies to CELT
if (newParams.ForceMode == OpusMode.MODE_SILK_ONLY && newParams.ConstrainedVBR)
{
continue;
}
// 12Khz + 2.5ms triggers an opus bug for now
if (newParams.SampleRate == 12000 && newParams.FrameSize < 5)
{
continue;
}
allTests.Add(newParams);
}
}
}
}
}
}
}
}
}
}
TestParameters[] allTestsRandom = allTests.ToArray();
int numTestCases = allTests.Count;
Console.WriteLine("Preparing " + numTestCases + " test cases");
// Shuffle the test list
if (true)
{
TestParameters temp;
int a;
int b;
Random rand = new Random();
for (int c = 0; c < numTestCases; c++)
{
a = rand.Next(numTestCases);
b = rand.Next(numTestCases);
temp = allTestsRandom[a];
allTestsRandom[a] = allTestsRandom[b];
allTestsRandom[b] = temp;
}
}
double concentusTime = 0.001;
double opusTime = 0;
int passedTests = 0;
int testsRun = 0;
foreach (TestParameters p in allTestsRandom)
{
testsRun++;
Console.Write("{0,5} {1} {2} Cpx={3,2} {4}Kbps {5,2}Khz {6,3} Ms PLC {7,2}% {8} {9} {10}... ",
testsRun,
PrintApplication(p.Application),
p.Channels == 1 ? "Mono " : "Stereo",
p.Complexity,
p.Bitrate > 0 ? string.Format("{0,3}", p.Bitrate) : "VAR",
p.SampleRate / 1000,
p.FrameSize,
p.PacketLossPercent,
PrintVBRMode(p),
p.UseDTX ? "DTX" : " ",
PrintForceMode(p.ForceMode));
TestResults response = TestDriver.RunTest(p, GetTestSample(p));
if (response.Passed)
{
passedTests++;
if (passedTests > 7)
{
concentusTime *= 0.999;
opusTime *= 0.999;
concentusTime += response.ConcentusTimeMs;
opusTime += response.OpusTimeMs;
}
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("{0} (Speed {1:F2}% Pass {2:F2}%)", response.Message, (opusTime * 100 / concentusTime), ((double)passedTests * 100 / testsRun));
Console.ForegroundColor = ConsoleColor.Gray;
}
else
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("FAIL: " + response.Message);
Console.ForegroundColor = ConsoleColor.Gray;
//if (response.FrameCount == 0)
//{
// PrintShortArray(response.FailureFrame);
// Console.WriteLine(response.FrameLength);
// Console.ReadLine();
//}
}
}
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("All tests FINISHED");
Console.WriteLine("{0} out of {1} tests passed ({2:F2}%)", passedTests, numTestCases, ((double)passedTests * 100 / numTestCases));
Console.WriteLine("Speed benchmark was {0:F2}%", (opusTime * 100 / concentusTime));
}
public static extern IntPtr opus_encoder_create(int fs, int channels, OpusApplication application, ref ErrorCodes error);
public void ShotgunTest()
{
OpusApplication[] Applications = new OpusApplication[] { OpusApplication.OPUS_APPLICATION_AUDIO, OpusApplication.OPUS_APPLICATION_VOIP, OpusApplication.OPUS_APPLICATION_RESTRICTED_LOWDELAY };
int[] Bitrates = new int[] { -1, 6, 16, 20, 32, 64, 500 };
int[] Channels = new int[] { 1, 2 };
int[] Complexities = new int[] { 0, 2, 4, 6, 8, 10 };
int[] SampleRates = new int[] { 8000, 12000, 16000, 24000, 48000 };
double[] FrameSizes = new double[] { 2.5, 5, 10, 20, 40, 60 };
int[] PacketLosses = new int[] { 0, 20 };
OpusMode[] ForceModes = new OpusMode[] { OpusMode.MODE_AUTO, OpusMode.MODE_CELT_ONLY, OpusMode.MODE_SILK_ONLY };
bool[] DTXModes = new bool[] { false, true };
int[] VBRModes = new int[] { 0, 1, 2 };
IList <TestParameters> allTests = new List <TestParameters>();
for (int app_idx = 0; app_idx < Applications.Length; app_idx++)
{
for (int plc_idx = 0; plc_idx < PacketLosses.Length; plc_idx++)
{
for (int chan_idx = 0; chan_idx < Channels.Length; chan_idx++)
{
for (int sr_idx = 0; sr_idx < SampleRates.Length; sr_idx++)
{
for (int fs_idx = 0; fs_idx < FrameSizes.Length; fs_idx++)
{
for (int cpx_idx = 0; cpx_idx < Complexities.Length; cpx_idx++)
{
for (int bit_idx = 0; bit_idx < Bitrates.Length; bit_idx++)
{
for (int fm_idx = 0; fm_idx < ForceModes.Length; fm_idx++)
{
for (int dtx_idx = 0; dtx_idx < DTXModes.Length; dtx_idx++)
{
for (int vbr_idx = 0; vbr_idx < VBRModes.Length; vbr_idx++)
{
TestParameters newParams = new TestParameters()
{
Application = Applications[app_idx],
Bitrate = Bitrates[bit_idx],
Channels = Channels[chan_idx],
Complexity = Complexities[cpx_idx],
PacketLossPercent = PacketLosses[plc_idx],
SampleRate = SampleRates[sr_idx],
FrameSize = FrameSizes[fs_idx],
ForceMode = ForceModes[fm_idx],
UseDTX = DTXModes[dtx_idx]
};
if (VBRModes[vbr_idx] == 0)
{
newParams.UseVBR = false;
newParams.ConstrainedVBR = false;
}
else if (VBRModes[vbr_idx] == 1)
{
newParams.UseVBR = true;
newParams.ConstrainedVBR = false;
}
else if (VBRModes[vbr_idx] == 2)
{
newParams.UseVBR = true;
newParams.ConstrainedVBR = true;
}
// Validate params
if (newParams.Bitrate > 40 || newParams.FrameSize < 10)
{
// No FEC outside of SILK mode
if (newParams.PacketLossPercent > 0)
{
continue;
}
// No DTX outside of SILK mode
if (newParams.UseDTX)
{
continue;
}
if (newParams.ForceMode == OpusMode.MODE_SILK_ONLY)
{
continue;
}
}
// Constrained VBR only applies to CELT
if (newParams.ForceMode == OpusMode.MODE_SILK_ONLY && newParams.ConstrainedVBR)
{
continue;
}
// 12Khz + 2.5ms triggers an opus bug for now
if (newParams.SampleRate == 12000 && newParams.FrameSize < 5)
{
continue;
}
allTests.Add(newParams);
}
}
}
}
}
}
}
}
}
}
TestParameters[] allTestsRandom = allTests.ToArray();
int numTestCases = allTests.Count;
// Shuffle the test list
TestParameters temp;
int a;
int b;
Random rand = new Random();
for (int c = 0; c < numTestCases; c++)
{
a = rand.Next(numTestCases);
b = rand.Next(numTestCases);
temp = allTestsRandom[a];
allTestsRandom[a] = allTestsRandom[b];
allTestsRandom[b] = temp;
}
int testsRun = 0;
foreach (TestParameters p in allTestsRandom)
{
testsRun++;
TestResults response = TestDriver.RunTest(p, GetTestSample(p));
Assert.IsTrue(response.Passed);
if (testsRun > 50)
{
break;
}
}
}
public void SetApplication(OpusApplication application)
{
_application = application;
_encoder.Application = _application;
}
public void SetApplication(OpusApplication application)
{
_application = (int)application;
opus_encoder_ctl(_encoder, (int)OpusControl.OPUS_SET_APPLICATION_REQUEST, _application);
}
internal int opus_multistream_surround_encoder_init(
int Fs,
int channels,
int mapping_family,
out int streams,
out int coupled_streams,
byte[] mapping,
OpusApplication application
)
{
streams = 0;
coupled_streams = 0;
if ((channels > 255) || (channels < 1))
{
return(OpusError.OPUS_BAD_ARG);
}
this.lfe_stream = -1;
if (mapping_family == 0)
{
if (channels == 1)
{
streams = 1;
coupled_streams = 0;
mapping[0] = 0;
}
else if (channels == 2)
{
streams = 1;
coupled_streams = 1;
mapping[0] = 0;
mapping[1] = 1;
}
else
{
return(OpusError.OPUS_UNIMPLEMENTED);
}
}
else if (mapping_family == 1 && channels <= 8 && channels >= 1)
{
int i;
streams = VorbisLayout.vorbis_mappings[channels - 1].nb_streams;
coupled_streams = VorbisLayout.vorbis_mappings[channels - 1].nb_coupled_streams;
for (i = 0; i < channels; i++)
{
mapping[i] = VorbisLayout.vorbis_mappings[channels - 1].mapping[i];
}
if (channels >= 6)
{
this.lfe_stream = streams - 1;
}
}
else if (mapping_family == 255)
{
byte i;
streams = channels;
coupled_streams = 0;
for (i = 0; i < channels; i++)
{
mapping[i] = i;
}
}
else
{
return(OpusError.OPUS_UNIMPLEMENTED);
}
return(opus_multistream_encoder_init(Fs, channels, streams, coupled_streams,
mapping, application, (channels > 2 && mapping_family == 1) ? 1 : 0));
}
internal int opus_multistream_encoder_init(
int Fs,
int channels,
int streams,
int coupled_streams,
byte[] mapping,
OpusApplication application,
int surround
)
{
int i, ret;
int encoder_ptr;
if ((channels > 255) || (channels < 1) || (coupled_streams > streams) ||
(streams < 1) || (coupled_streams < 0) || (streams > 255 - coupled_streams))
{
return(OpusError.OPUS_BAD_ARG);
}
this.layout.nb_channels = channels;
this.layout.nb_streams = streams;
this.layout.nb_coupled_streams = coupled_streams;
this.subframe_mem[0] = this.subframe_mem[1] = this.subframe_mem[2] = 0;
if (surround == 0)
{
this.lfe_stream = -1;
}
this.bitrate_bps = OpusConstants.OPUS_AUTO;
this.application = application;
this.variable_duration = OpusFramesize.OPUS_FRAMESIZE_ARG;
for (i = 0; i < this.layout.nb_channels; i++)
{
this.layout.mapping[i] = mapping[i];
}
if (OpusMultistream.validate_layout(this.layout) == 0 || validate_encoder_layout(this.layout) == 0)
{
return(OpusError.OPUS_BAD_ARG);
}
encoder_ptr = 0;
for (i = 0; i < this.layout.nb_coupled_streams; i++)
{
ret = this.encoders[encoder_ptr].opus_init_encoder(Fs, 2, application);
if (ret != OpusError.OPUS_OK)
{
return(ret);
}
if (i == this.lfe_stream)
{
this.encoders[encoder_ptr].IsLFE = true;
}
encoder_ptr += 1;
}
for (; i < this.layout.nb_streams; i++)
{
ret = this.encoders[encoder_ptr].opus_init_encoder(Fs, 1, application);
if (i == this.lfe_stream)
{
this.encoders[encoder_ptr].IsLFE = true;
}
if (ret != OpusError.OPUS_OK)
{
return(ret);
}
encoder_ptr += 1;
}
if (surround != 0)
{
Arrays.MemSetInt(this.preemph_mem, 0, channels);
Arrays.MemSetInt(this.window_mem, 0, channels * 120);
}
this.surround = surround;
return(OpusError.OPUS_OK);
}