public byte[] Encode(short[] data, BandMode mode)
{
this.Init();
int length = (int)data.Length / 2;
if (length % 2 != 0)
{
length++;
}
byte[] num = USpeakPoolUtils.GetByte(length);
int num1 = 0;
while (num1 < (int)num.Length)
{
if (num1 * 2 < (int)data.Length)
{
byte num2 = this.ADPCM_Encode(data[num1 * 2]);
byte num3 = 0;
if (num1 * 2 + 1 < (int)data.Length)
{
num3 = this.ADPCM_Encode(data[num1 * 2 + 1]);
}
num[num1] = (byte)(num3 << 4 | num2);
num1++;
}
else
{
break;
}
}
return(num);
}
public byte[] Encode(short[] data, BandMode mode)
{
Init();
int len = data.Length / 2;
if (len % 2 != 0)
{
len++;
}
byte[] temp = USpeakPoolUtils.GetByte(len);
for (int i = 0; i < temp.Length; i++)
{
if ((i * 2) >= data.Length)
{
break;
}
byte a = ADPCM_Encode(data[i * 2]);
byte b = 0;
if (((i * 2) + 1) < data.Length)
{
b = ADPCM_Encode(data[(i * 2) + 1]);
}
byte c = (byte)((b << 4) | a);
temp[i] = c;
}
return(temp);
}
public byte[] Encode(short[] data, BandMode mode)
{
this.Init();
int length = data.Length / 2;
if ((length % 2) != 0)
{
length++;
}
byte[] @byte = USpeakPoolUtils.GetByte(length);
for (int i = 0; i < @byte.Length; i++)
{
if ((i * 2) >= data.Length)
{
return(@byte);
}
byte num3 = this.ADPCM_Encode(data[i * 2]);
byte num4 = 0;
if (((i * 2) + 1) < data.Length)
{
num4 = this.ADPCM_Encode(data[(i * 2) + 1]);
}
@byte[i] = (byte)((num4 << 4) | num3);
}
return(@byte);
}
// Token: 0x06004C1C RID: 19484 RVA: 0x00197518 File Offset: 0x00195918
public byte[] Encode(short[] data, BandMode mode)
{
this.Init();
int num = data.Length / 2;
if (num % 2 != 0)
{
num++;
}
byte[] @byte = USpeakPoolUtils.GetByte(num);
for (int i = 0; i < @byte.Length; i++)
{
if (i * 2 >= data.Length)
{
break;
}
byte b = this.ADPCM_Encode(data[i * 2]);
byte b2 = 0;
if (i * 2 + 1 < data.Length)
{
b2 = this.ADPCM_Encode(data[i * 2 + 1]);
}
byte b3 = (byte)((int)b2 << 4 | (int)b);
@byte[i] = b3;
}
return(@byte);
}
/// <summary>
/// Decompress the given encoded audio data
/// </summary>
/// <param name="data">The encoded audio</param>
/// <param name="samples">The number of encoded samples</param>
/// <param name="channels">The number of channels</param>
/// <param name="threeD">Whether the audio is 3D</param>
/// <param name="mode">The bandwidth mode used to encode the data</param>
/// <param name="Codec">The codec to decode the data with</param>
/// <param name="gain">The gain to apply to the decoded audio</param>
/// <returns>32bit raw audio data</returns>
public static float[] DecompressAudio(byte[] data, int samples, int channels, bool threeD, BandMode mode, ICodec Codec, float gain)
{
int frequency = 4000;
if (mode == BandMode.Narrow)
{
frequency = 8000;
}
else if (mode == BandMode.Wide)
{
frequency = 16000;
}
byte[] d;
//d = unzip( data );
d = data;
short[] pcm = Codec.Decode(d, mode);
tmp.Clear();
tmp.AddRange(pcm);
USpeakPoolUtils.Return(pcm);
return(USpeakAudioClipConverter.ShortsToAudioData(tmp.ToArray(), channels, frequency, threeD, gain));
}
/// <summary>
/// Convert audio data to a short array
/// </summary>
/// <param name="clip">The audio clip to convert</param>
/// <returns>A short array</returns>
public static short[] AudioDataToShorts(float[] samples, int channels, float gain = 1.0f)
{
short[] data = USpeakPoolUtils.GetShort(samples.Length * channels);
for (int i = 0; i < samples.Length; i++)
{
//convert to the -3267 to +3267 range
float g = samples[i] * gain;
if (Mathf.Abs(g) > 1.0f)
{
if (g > 0)
{
g = 1.0f;
}
else
{
g = -1.0f;
}
}
float conv = g * 3267.0f;
//int c = Mathf.RoundToInt( conv );
data[i] = (short)conv;
}
return(data);
}
// Token: 0x06004C3F RID: 19519 RVA: 0x00197D4C File Offset: 0x0019614C
private byte[] SpeexEncode(short[] input, global::BandMode mode)
{
SpeexEncoder speexEncoder = null;
int num = 320;
if (mode != global::BandMode.Narrow)
{
if (mode != global::BandMode.Wide)
{
if (mode == global::BandMode.UltraWide)
{
speexEncoder = this.m_ultrawide_enc;
num = 1280;
}
}
else
{
speexEncoder = this.m_wide_enc;
num = 640;
}
}
else
{
speexEncoder = this.m_narrow_enc;
num = 320;
}
byte[] @byte = USpeakPoolUtils.GetByte(num + 4);
int value = speexEncoder.Encode(input, 0, input.Length, @byte, 4, @byte.Length);
byte[] bytes = BitConverter.GetBytes(value);
Array.Copy(bytes, @byte, 4);
return(@byte);
}
private byte[] SpeexEncode(short[] input, BandMode mode)
{
NSpeex.SpeexEncoder speexEnc = null;
int byteLen = 320;
switch (mode)
{
case BandMode.Narrow:
speexEnc = m_narrow_enc;
byteLen = 320;
break;
case BandMode.Wide:
speexEnc = m_wide_enc;
byteLen = 640;
break;
case BandMode.UltraWide:
speexEnc = m_ultrawide_enc;
byteLen = 1280;
break;
}
byte[] encoded = USpeakPoolUtils.GetByte(byteLen + 4);
int length = speexEnc.Encode(input, 0, input.Length, encoded, 4, encoded.Length);
// first 4 bytes contains length
byte[] len_bytes = BitConverter.GetBytes(length);
System.Array.Copy(len_bytes, encoded, 4);
return(encoded);
}
// Token: 0x06004CA7 RID: 19623 RVA: 0x0019B4BC File Offset: 0x001998BC
public static float[] DecompressAudio(byte[] data, int samples, int channels, bool threeD, BandMode mode, ICodec Codec, float gain)
{
int frequency = 4000;
if (mode == BandMode.Narrow)
{
frequency = 8000;
}
else if (mode == BandMode.Wide)
{
frequency = 16000;
}
else if (mode == BandMode.UltraWide)
{
frequency = 32000;
}
else if (mode == BandMode.Opus48k)
{
frequency = 48000;
}
short[] array = Codec.Decode(data, mode);
float[] result = USpeakAudioClipConverter.ShortsToAudioData(array, channels, frequency, threeD, gain);
USpeakPoolUtils.Return(array);
return(result);
}
// Token: 0x06003B05 RID: 15109 RVA: 0x00129978 File Offset: 0x00127D78
public unsafe byte[] Encode(byte[] inputPcmSamples, int sampleLength, out int encodedLength)
{
if (this.disposed)
{
throw new ObjectDisposedException("OpusEncoder");
}
int frame_size = this.FrameCount(inputPcmSamples);
byte[] @byte = USpeakPoolUtils.GetByte(this.MaxDataBytes);
int num;
fixed(byte *value = (@byte != null && @byte.Length != 0)? @byte : null)
{
IntPtr data = new IntPtr((void *)value);
num = API.opus_encode(this._encoder, inputPcmSamples, frame_size, data, sampleLength);
}
encodedLength = num;
if (num < 0)
{
USpeakPoolUtils.Return(@byte);
string str = "Encoding failed - ";
Errors errors = (Errors)num;
throw new Exception(str + errors.ToString());
}
byte[] byte2 = USpeakPoolUtils.GetByte(encodedLength);
Buffer.BlockCopy(@byte, 0, byte2, 0, encodedLength);
USpeakPoolUtils.Return(@byte);
return(byte2);
}
// Token: 0x06004CA6 RID: 19622 RVA: 0x0019B47C File Offset: 0x0019987C
public static byte[] CompressAudioData(float[] samples, int channels, BandMode mode, ICodec Codec, float gain = 1f)
{
short[] array = USpeakAudioClipConverter.AudioDataToShorts(samples, channels, gain);
byte[] array2 = Codec.Encode(array, mode);
USpeakPoolUtils.Return(array);
byte[] array3 = new byte[array2.Length];
Array.Copy(array2, array3, array2.Length);
USpeakPoolUtils.Return(array2);
return(array3);
}
public static float[] ShortsToAudioData(short[] data, int channels, int frequency, bool threedimensional, float gain)
{
float[] @float = USpeakPoolUtils.GetFloat(data.Length);
for (int i = 0; i < @float.Length; i++)
{
int num2 = data[i];
@float[i] = (((float)num2) / 3267f) * gain;
}
return(@float);
}
// Token: 0x06004CAA RID: 19626 RVA: 0x0019B5A4 File Offset: 0x001999A4
public static float[] ShortsToAudioData(short[] data, int channels, int frequency, bool threedimensional, float gain)
{
float[] @float = USpeakPoolUtils.GetFloat(data.Length);
for (int i = 0; i < @float.Length; i++)
{
float num = (float)data[i] / 3267f * gain;
@float[i] = ((num >= -1f) ? ((num <= 1f) ? num : 1f) : -1f);
}
return(@float);
}
// Token: 0x06004CA9 RID: 19625 RVA: 0x0019B53C File Offset: 0x0019993C
public static short[] AudioDataToShorts(float[] samples, int channels, float gain = 1f)
{
short[] @short = USpeakPoolUtils.GetShort(samples.Length * channels);
for (int i = 0; i < samples.Length; i++)
{
float num = samples[i] * gain * 3267f;
@short[i] = (short)((num >= -3267f) ? ((num <= 3267f) ? num : 3267f) : -3267f);
}
return(@short);
}
public static float[] ShortsToAudioData(short[] data, int channels, int frequency, bool threedimensional, float gain)
{
float[] num = USpeakPoolUtils.GetFloat((int)data.Length);
for (int i = 0; i < (int)num.Length; i++)
{
int num1 = data[i];
num[i] = (float)num1 / 3267f * gain;
}
return(num);
}
public static byte[] MuLawEncode(short[] pcm)
{
int length = (int)pcm.Length;
byte[] num = USpeakPoolUtils.GetByte(length);
for (int i = 0; i < length; i++)
{
num[i] = MuLawCodec.MuLawEncoder.MuLawEncode(pcm[i]);
}
return(num);
}
public static short[] MuLawDecode(byte[] data)
{
var size = data.Length;
var decoded = USpeakPoolUtils.GetShort(size);
for (var i = 0; i < size; i++)
{
decoded[i] = muLawToPcmMap[data[i]];
}
return(decoded);
}
public static byte[] CompressAudioData(float[] samples, int channels, out int sample_count, BandMode mode, ICodec Codec, float gain = 1f)
{
USpeakAudioClipCompressor.data.Clear();
sample_count = 0;
short[] shorts = USpeakAudioClipConverter.AudioDataToShorts(samples, channels, gain);
byte[] numArray = Codec.Encode(shorts, mode);
USpeakPoolUtils.Return(shorts);
USpeakAudioClipCompressor.data.AddRange(numArray);
USpeakPoolUtils.Return(numArray);
return(USpeakAudioClipCompressor.data.ToArray());
}
public static byte[] MuLawEncode(int[] pcm)
{
int length = pcm.Length;
byte[] @byte = USpeakPoolUtils.GetByte(length);
for (int i = 0; i < length; i++)
{
@byte[i] = MuLawEncode(pcm[i]);
}
return(@byte);
}
public static short[] MuLawDecode(byte[] data)
{
int length = data.Length;
short[] @short = USpeakPoolUtils.GetShort(length);
for (int i = 0; i < length; i++)
{
@short[i] = muLawToPcmMap[data[i]];
}
return(@short);
}
// Token: 0x06004C34 RID: 19508 RVA: 0x00197840 File Offset: 0x00195C40
public static short[] MuLawDecode(byte[] data)
{
int num = data.Length;
short[] @short = USpeakPoolUtils.GetShort(num);
for (int i = 0; i < num; i++)
{
@short[i] = MuLawCodec.MuLawDecoder.muLawToPcmMap[(int)data[i]];
}
return(@short);
}
// Token: 0x06004C30 RID: 19504 RVA: 0x0019774C File Offset: 0x00195B4C
public static byte[] MuLawEncode(short[] pcm)
{
int num = pcm.Length;
byte[] @byte = USpeakPoolUtils.GetByte(num);
for (int i = 0; i < num; i++)
{
@byte[i] = MuLawCodec.MuLawEncoder.MuLawEncode(pcm[i]);
}
return(@byte);
}
public static short[] MuLawDecode(byte[] data)
{
int length = (int)data.Length;
short[] num = USpeakPoolUtils.GetShort(length);
for (int i = 0; i < length; i++)
{
num[i] = MuLawCodec.MuLawDecoder.muLawToPcmMap[data[i]];
}
return(num);
}
public static byte[] MuLawEncode(short[] pcm)
{
var size = pcm.Length;
var encoded = USpeakPoolUtils.GetByte(size);
for (int i = 0; i < size; i++)
{
encoded[i] = MuLawEncode(pcm[i]);
}
return(encoded);
}
/// <summary>
/// Convert a short array to a PCM array
/// </summary>
/// <param name="data">The short array representing an audio clip</param>
/// <param name="channels">How many channels in the audio data</param>
/// <param name="frequency">The recording frequency of the audio data</param>
/// <param name="threedimensional">Whether the audio clip should be 3D</param>
/// <param name="gain">How much to boost the volume (1.0 = unchanged)</param>
/// <returns>An array of float samples</returns>
public static float[] ShortsToAudioData(short[] data, int channels, int frequency, bool threedimensional, float gain)
{
float[] samples = USpeakPoolUtils.GetFloat(data.Length);
for (int i = 0; i < samples.Length; i++)
{
//convert to float in the -1 to 1 range
int c = (int)data[i];
samples[i] = ((float)c / 3267.0f) * gain;
}
return(samples);
}
public short[] Decode(byte[] data, BandMode mode)
{
Init();
short[] temp = USpeakPoolUtils.GetShort(data.Length * 2);
for (int i = 0; i < data.Length; i++)
{
byte c = data[i];
byte d = (byte)(c & 0x0f);
byte e = (byte)(c >> 4);
temp[i * 2] = ADPCM_Decode(d);
temp[(i * 2) + 1] = ADPCM_Decode(e);
}
return(temp);
}
public static short[] AudioDataToShorts(float[] samples, int channels, float gain = 1f)
{
short[] num = USpeakPoolUtils.GetShort((int)samples.Length * channels);
for (int i = 0; i < (int)samples.Length; i++)
{
float single = samples[i] * gain;
if (Mathf.Abs(single) > 1f)
{
single = (single <= 0f ? -1f : 1f);
}
num[i] = (short)(single * 3267f);
}
return(num);
}
private static void CopyStream(Stream input, Stream output)
{
byte[] num = USpeakPoolUtils.GetByte(32768);
while (true)
{
int num1 = input.Read(num, 0, (int)num.Length);
if (num1 <= 0)
{
break;
}
output.Write(num, 0, num1);
}
USpeakPoolUtils.Return(num);
}
public short[] Decode(byte[] data, BandMode mode)
{
this.Init();
short[] @short = USpeakPoolUtils.GetShort(data.Length * 2);
for (int i = 0; i < data.Length; i++)
{
byte num2 = data[i];
byte originalSample = (byte)(num2 & 15);
byte num4 = (byte)(num2 >> 4);
@short[i * 2] = this.ADPCM_Decode(originalSample);
@short[(i * 2) + 1] = this.ADPCM_Decode(num4);
}
return(@short);
}
private static void CopyStream(Stream input, Stream output)
{
byte[] @byte = USpeakPoolUtils.GetByte(0x8000);
while (true)
{
int count = input.Read(@byte, 0, @byte.Length);
if (count <= 0)
{
break;
}
output.Write(@byte, 0, count);
}
USpeakPoolUtils.Return(@byte);
}
