├── OpusDotNet ├── NuGet │ ├── opus │ │ ├── win-x64 │ │ │ ├── opus.dll │ │ │ ├── OpusDotNet.opus.win-x64.props │ │ │ ├── OpusDotNet.opus.win-x64.nuspec │ │ │ └── LICENSE.txt │ │ └── win-x86 │ │ │ ├── opus.dll │ │ │ ├── OpusDotNet.opus.win-x86.props │ │ │ ├── OpusDotNet.opus.win-x86.nuspec │ │ │ └── LICENSE.txt │ ├── OpusDotNet.targets │ └── OpusDotNet.nuspec ├── OpusDotNet.csproj ├── ForceChannels.cs ├── SafeDecoderHandle.cs ├── SafeEncoderHandle.cs ├── Control.cs ├── Application.cs ├── Bandwidth.cs ├── OpusError.cs ├── OpusException.cs ├── API.cs ├── OpusDecoder.cs └── OpusEncoder.cs ├── LICENSE.md ├── OpusDotNet.sln ├── README.md ├── .gitattributes └── .gitignore /OpusDotNet/NuGet/opus/win-x64/opus.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mrphil2105/OpusDotNet/HEAD/OpusDotNet/NuGet/opus/win-x64/opus.dll -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x86/opus.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mrphil2105/OpusDotNet/HEAD/OpusDotNet/NuGet/opus/win-x86/opus.dll -------------------------------------------------------------------------------- /OpusDotNet/OpusDotNet.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | netstandard2.0 5 | true 6 | true 7 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x64/OpusDotNet.opus.win-x64.props: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x86/OpusDotNet.opus.win-x86.props: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /OpusDotNet/ForceChannels.cs: -------------------------------------------------------------------------------- 1 | namespace OpusDotNet 2 | { 3 | /// 4 | /// Specifies the modes for forced mono/stereo. 5 | /// 6 | public enum ForceChannels 7 | { 8 | /// 9 | /// Not forced. 10 | /// 11 | None = -1000, 12 | /// 13 | /// Forced mono. 14 | /// 15 | Mono = 1, 16 | /// 17 | /// Forced stereo. 18 | /// 19 | Stereo = 2 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /OpusDotNet/SafeDecoderHandle.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Runtime.InteropServices; 3 | using System.Runtime.ConstrainedExecution; 4 | 5 | namespace OpusDotNet 6 | { 7 | internal sealed class SafeDecoderHandle : SafeHandle 8 | { 9 | private SafeDecoderHandle() : base(IntPtr.Zero, true) 10 | { 11 | } 12 | 13 | public override bool IsInvalid => handle == IntPtr.Zero; 14 | 15 | [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 16 | protected override bool ReleaseHandle() 17 | { 18 | API.opus_decoder_destroy(handle); 19 | return true; 20 | } 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /OpusDotNet/SafeEncoderHandle.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Runtime.InteropServices; 3 | using System.Runtime.ConstrainedExecution; 4 | 5 | namespace OpusDotNet 6 | { 7 | internal sealed class SafeEncoderHandle : SafeHandle 8 | { 9 | private SafeEncoderHandle() : base(IntPtr.Zero, true) 10 | { 11 | } 12 | 13 | public override bool IsInvalid => handle == IntPtr.Zero; 14 | 15 | [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 16 | protected override bool ReleaseHandle() 17 | { 18 | API.opus_encoder_destroy(handle); 19 | return true; 20 | } 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /OpusDotNet/Control.cs: -------------------------------------------------------------------------------- 1 | namespace OpusDotNet 2 | { 3 | internal enum Control 4 | { 5 | SetBitrate = 4002, 6 | //GetBitrate = 4003, 7 | 8 | SetMaxBandwidth = 4004, 9 | GetMaxBandwidth = 4005, 10 | 11 | SetVBR = 4006, 12 | GetVBR = 4007, 13 | 14 | SetComplexity = 4010, 15 | GetComplexity = 4011, 16 | 17 | SetInbandFEC = 4012, 18 | GetInbandFEC = 4013, 19 | 20 | SetPacketLossPerc = 4014, 21 | GetPacketLossPerc = 4015, 22 | 23 | SetDTX = 4016, 24 | GetDTX = 4017, 25 | 26 | SetForceChannels = 4022, 27 | GetForceChannels = 4023 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /OpusDotNet/Application.cs: -------------------------------------------------------------------------------- 1 | namespace OpusDotNet 2 | { 3 | /// 4 | /// Specifies the intended applications. 5 | /// 6 | public enum Application 7 | { 8 | /// 9 | /// Process signal for improved speech intelligibility. 10 | /// 11 | VoIP = 2048, 12 | /// 13 | /// Favor faithfulness to the original input. 14 | /// 15 | Audio = 2049, 16 | /// 17 | /// Configure the minimum possible coding delay by disabling certain modes of operation. 18 | /// 19 | RestrictedLowDelay = 2051 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /OpusDotNet/Bandwidth.cs: -------------------------------------------------------------------------------- 1 | namespace OpusDotNet 2 | { 3 | /// 4 | /// Specifies the bandpasses. 5 | /// 6 | public enum Bandwidth 7 | { 8 | /// 9 | /// 4 kHz passband. 10 | /// 11 | NarrowBand = 1101, 12 | /// 13 | /// 6 kHz passband. 14 | /// 15 | MediumBand = 1102, 16 | /// 17 | /// 8 kHz passband. 18 | /// 19 | WideBand = 1103, 20 | /// 21 | /// 12 kHz passband. 22 | /// 23 | SuperWideBand = 1104, 24 | /// 25 | /// 20 kHz passband. 26 | /// 27 | FullBand = 1105 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x64/OpusDotNet.opus.win-x64.nuspec: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | OpusDotNet.opus.win-x64 5 | 1.3.1 6 | Contains 64-bit binaries for OpusDotNet. 7 | The Opus Audio Codec Authors 8 | LICENSE.txt 9 | true 10 | https://opus-codec.org/ 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x86/OpusDotNet.opus.win-x86.nuspec: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | OpusDotNet.opus.win-x86 5 | 1.3.1 6 | Contains 32-bit binaries for OpusDotNet. 7 | The Opus Audio Codec Authors 8 | LICENSE.txt 9 | true 10 | https://opus-codec.org/ 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/OpusDotNet.targets: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | %(RecursiveDir)%(Filename)%(Extension) 11 | PreserveNewest 12 | 13 | 14 | 15 | 16 | 17 | %(RecursiveDir)%(Filename)%(Extension) 18 | PreserveNewest 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2019 mrphil2105 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /OpusDotNet/OpusError.cs: -------------------------------------------------------------------------------- 1 | namespace OpusDotNet 2 | { 3 | /// 4 | /// Specifies the possible errors when using Opus. 5 | /// 6 | public enum OpusError 7 | { 8 | /// 9 | /// One or more invalid/out of range arguments. 10 | /// 11 | BadArg = -1, 12 | /// 13 | /// Not enough bytes allocated in the buffer. 14 | /// 15 | BufferTooSmall = -2, 16 | /// 17 | /// An internal error was detected. 18 | /// 19 | InternalError = -3, 20 | /// 21 | /// The compressed data passed is corrupted. 22 | /// 23 | InvalidPacket = -4, 24 | /// 25 | /// Invalid/unsupported request number. 26 | /// 27 | Unimplemented = -5, 28 | /// 29 | /// An encoder or decoder structure is invalid or already freed. 30 | /// 31 | InvalidState = -6, 32 | /// 33 | /// Memory allocation has failed. 34 | /// 35 | AllocFail = -7, 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /OpusDotNet.sln: -------------------------------------------------------------------------------- 1 | 2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 16 4 | VisualStudioVersion = 16.0.29001.49 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OpusDotNet", "OpusDotNet\OpusDotNet.csproj", "{2606A4D3-51DF-4AFD-ADAC-4A758D101672}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {2606A4D3-51DF-4AFD-ADAC-4A758D101672}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {2606A4D3-51DF-4AFD-ADAC-4A758D101672}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {2606A4D3-51DF-4AFD-ADAC-4A758D101672}.Release|Any CPU.ActiveCfg = Release|Any CPU 17 | {2606A4D3-51DF-4AFD-ADAC-4A758D101672}.Release|Any CPU.Build.0 = Release|Any CPU 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | GlobalSection(ExtensibilityGlobals) = postSolution 23 | SolutionGuid = {990DFEAD-8C86-4B0A-8BE4-AEDC73C1E432} 24 | EndGlobalSection 25 | EndGlobal 26 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/OpusDotNet.nuspec: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | OpusDotNet 5 | 1.0.3 6 | An easy-to-use library for encoding and decoding 16-bit audio using the Opus Audio Codec. NOTE: This library is a wrapper around the official libopus, and does not contain code for parsing .opus container files. 7 | mrphil2105 8 | MIT 9 | https://github.com/mrphil2105/OpusDotNet 10 | Copyright © 2019 mrphil2105 11 | Opus, Audio, Codec, Encoder, Decoder, VoIP 12 | 13 | 14 | 15 | 16 | 17 | Added improved encode and decode methods. IMPORTANT: Deprecated the old encode and decode methods. 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # OpusDotNet 2 | [![OpusDotNet](https://img.shields.io/nuget/v/OpusDotNet.svg?style=flat-square&label=OpusDotNet)](https://www.nuget.org/packages/OpusDotNet) 3 | 4 | OpusDotNet is a wrapper around the official `libopus`, and makes it easy to encode and decode audio. 5 | The library is mainly suited for VoIP applications and at the moment only provides `libopus` binaries for Windows (compiled with the Win10 SDK). 6 | 7 | ## Getting Started 8 | ### Installation 9 | Install OpusDotNet via the NuGet Package Manager: 10 | ``` 11 | Install-Package OpusDotNet 12 | ``` 13 | 14 | ### Basic Usage 15 | A simple example of encoding and decoding audio: 16 | ```csharp 17 | using (var encoder = new OpusEncoder(Application.Audio, 48000, 2) 18 | { 19 | Bitrate = 128000, // 128 kbps 20 | VBR = true // Variable bitrate 21 | }) 22 | using (var decoder = new OpusDecoder(48000, 2)) 23 | { 24 | // 40 ms of silence at 48 KHz (2 channels). 25 | byte[] inputPCMBytes = new byte[40 * 48000 / 1000 * 2 * 2]; 26 | byte[] opusBytes = encoder.Encode(inputPCMBytes, inputPCMBytes.Length, out int encodedLength); 27 | byte[] outputPCMBytes = decoder.Decode(opusBytes, encodedLength, out int decodedLength); 28 | } 29 | ``` 30 | 31 | ## Licenses 32 | - This project is licensed under the [MIT License](LICENSE.md). 33 | - **Opus Audio Codec** is licensed under the [BSD License](https://opus-codec.org/license/). 34 | -------------------------------------------------------------------------------- /OpusDotNet/OpusException.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | 3 | namespace OpusDotNet 4 | { 5 | /// 6 | /// The exception that is thrown when an Opus error occurs. 7 | /// 8 | public class OpusException : Exception 9 | { 10 | /// 11 | /// Initializes a new instance, with the specified Opus error code. 12 | /// 13 | /// The Opus error code. 14 | public OpusException(int errorCode) : base(GetMessage((OpusError)errorCode)) 15 | { 16 | Error = (OpusError)errorCode; 17 | } 18 | 19 | /// 20 | /// The Opus error. 21 | /// 22 | public OpusError Error { get; } 23 | 24 | private static string GetMessage(OpusError error) 25 | { 26 | switch (error) 27 | { 28 | case OpusError.BadArg: 29 | return "One or more invalid/out of range arguments."; 30 | case OpusError.BufferTooSmall: 31 | return "Not enough bytes allocated in the buffer."; 32 | case OpusError.InternalError: 33 | return "An internal error was detected."; 34 | case OpusError.InvalidPacket: 35 | return "The compressed data passed is corrupted."; 36 | case OpusError.Unimplemented: 37 | return "Invalid/unsupported request number."; 38 | case OpusError.InvalidState: 39 | return "An encoder or decoder structure is invalid or already freed."; 40 | case OpusError.AllocFail: 41 | return "Memory allocation has failed."; 42 | default: 43 | return "An unknown error has occurred."; 44 | } 45 | } 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x64/LICENSE.txt: -------------------------------------------------------------------------------- 1 | Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic, 2 | Jean-Marc Valin, Timothy B. Terriberry, 3 | CSIRO, Gregory Maxwell, Mark Borgerding, 4 | Erik de Castro Lopo 5 | 6 | Redistribution and use in source and binary forms, with or without 7 | modification, are permitted provided that the following conditions 8 | are met: 9 | 10 | - Redistributions of source code must retain the above copyright 11 | notice, this list of conditions and the following disclaimer. 12 | 13 | - Redistributions in binary form must reproduce the above copyright 14 | notice, this list of conditions and the following disclaimer in the 15 | documentation and/or other materials provided with the distribution. 16 | 17 | - Neither the name of Internet Society, IETF or IETF Trust, nor the 18 | names of specific contributors, may be used to endorse or promote 19 | products derived from this software without specific prior written 20 | permission. 21 | 22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 26 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 | 34 | Opus is subject to the royalty-free patent licenses which are 35 | specified at: 36 | 37 | Xiph.Org Foundation: 38 | https://datatracker.ietf.org/ipr/1524/ 39 | 40 | Microsoft Corporation: 41 | https://datatracker.ietf.org/ipr/1914/ 42 | 43 | Broadcom Corporation: 44 | https://datatracker.ietf.org/ipr/1526/ 45 | -------------------------------------------------------------------------------- /OpusDotNet/NuGet/opus/win-x86/LICENSE.txt: -------------------------------------------------------------------------------- 1 | Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic, 2 | Jean-Marc Valin, Timothy B. Terriberry, 3 | CSIRO, Gregory Maxwell, Mark Borgerding, 4 | Erik de Castro Lopo 5 | 6 | Redistribution and use in source and binary forms, with or without 7 | modification, are permitted provided that the following conditions 8 | are met: 9 | 10 | - Redistributions of source code must retain the above copyright 11 | notice, this list of conditions and the following disclaimer. 12 | 13 | - Redistributions in binary form must reproduce the above copyright 14 | notice, this list of conditions and the following disclaimer in the 15 | documentation and/or other materials provided with the distribution. 16 | 17 | - Neither the name of Internet Society, IETF or IETF Trust, nor the 18 | names of specific contributors, may be used to endorse or promote 19 | products derived from this software without specific prior written 20 | permission. 21 | 22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 26 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 | 34 | Opus is subject to the royalty-free patent licenses which are 35 | specified at: 36 | 37 | Xiph.Org Foundation: 38 | https://datatracker.ietf.org/ipr/1524/ 39 | 40 | Microsoft Corporation: 41 | https://datatracker.ietf.org/ipr/1914/ 42 | 43 | Broadcom Corporation: 44 | https://datatracker.ietf.org/ipr/1526/ 45 | -------------------------------------------------------------------------------- /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). Diff markers may cause the following 21 | # file extensions to fail to load in VS. An alternative would be to treat 22 | # these files as binary and thus will always conflict and require user 23 | # intervention with every merge. To do so, just uncomment the entries below 24 | ############################################################################### 25 | #*.sln merge=binary 26 | #*.csproj merge=binary 27 | #*.vbproj merge=binary 28 | #*.vcxproj merge=binary 29 | #*.vcproj merge=binary 30 | #*.dbproj merge=binary 31 | #*.fsproj merge=binary 32 | #*.lsproj merge=binary 33 | #*.wixproj merge=binary 34 | #*.modelproj merge=binary 35 | #*.sqlproj merge=binary 36 | #*.wwaproj merge=binary 37 | 38 | ############################################################################### 39 | # behavior for image files 40 | # 41 | # image files are treated as binary by default. 42 | ############################################################################### 43 | #*.jpg binary 44 | #*.png binary 45 | #*.gif binary 46 | 47 | ############################################################################### 48 | # diff behavior for common document formats 49 | # 50 | # Convert binary document formats to text before diffing them. This feature 51 | # is only available from the command line. Turn it on by uncommenting the 52 | # entries below. 53 | ############################################################################### 54 | #*.doc diff=astextplain 55 | #*.DOC diff=astextplain 56 | #*.docx diff=astextplain 57 | #*.DOCX diff=astextplain 58 | #*.dot diff=astextplain 59 | #*.DOT diff=astextplain 60 | #*.pdf diff=astextplain 61 | #*.PDF diff=astextplain 62 | #*.rtf diff=astextplain 63 | #*.RTF diff=astextplain 64 | -------------------------------------------------------------------------------- /OpusDotNet/API.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Runtime.InteropServices; 3 | using System.Runtime.ConstrainedExecution; 4 | 5 | namespace OpusDotNet 6 | { 7 | internal static class API 8 | { 9 | // Encoder 10 | 11 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 12 | public static extern SafeEncoderHandle opus_encoder_create(int Fs, int channels, int application, out int error); 13 | 14 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 15 | [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 16 | public static extern void opus_encoder_destroy(IntPtr st); 17 | 18 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 19 | public static extern int opus_encode(SafeEncoderHandle st, IntPtr pcm, int frame_size, IntPtr data, int max_data_bytes); 20 | 21 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 22 | public static extern int opus_encoder_ctl(SafeEncoderHandle st, int request, out int value); 23 | 24 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 25 | public static extern int opus_encoder_ctl(SafeEncoderHandle st, int request, int value); 26 | 27 | // Decoder 28 | 29 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 30 | public static extern SafeDecoderHandle opus_decoder_create(int Fs, int channels, out int error); 31 | 32 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 33 | [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 34 | public static extern void opus_decoder_destroy(IntPtr st); 35 | 36 | [DllImport("opus", CallingConvention = CallingConvention.Cdecl)] 37 | public static extern int opus_decode(SafeDecoderHandle st, IntPtr data, int len, IntPtr pcm, int frame_size, int decode_fec); 38 | 39 | // Helper Methods 40 | 41 | public static int GetSampleCount(double frameSize, int sampleRate) 42 | { 43 | // Number of samples per channel. 44 | return (int)(frameSize * sampleRate / 1000); 45 | } 46 | 47 | public static int GetPCMLength(int samples, int channels) 48 | { 49 | // 16-bit audio contains a sample every 2 (16 / 8) bytes, so we multiply by 2. 50 | return samples * channels * 2; 51 | } 52 | 53 | public static double GetFrameSize(int pcmLength, int sampleRate, int channels) 54 | { 55 | return (double)pcmLength / sampleRate / channels / 2 * 1000; 56 | } 57 | 58 | public static void ThrowIfError(int result) 59 | { 60 | if (result < 0) 61 | { 62 | throw new OpusException(result); 63 | } 64 | } 65 | } 66 | } 67 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | ## 4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore 5 | 6 | # User-specific files 7 | *.rsuser 8 | *.suo 9 | *.user 10 | *.userosscache 11 | *.sln.docstates 12 | 13 | # User-specific files (MonoDevelop/Xamarin Studio) 14 | *.userprefs 15 | 16 | # Build results 17 | [Dd]ebug/ 18 | [Dd]ebugPublic/ 19 | [Rr]elease/ 20 | [Rr]eleases/ 21 | x64/ 22 | x86/ 23 | [Aa][Rr][Mm]/ 24 | [Aa][Rr][Mm]64/ 25 | bld/ 26 | [Bb]in/ 27 | [Oo]bj/ 28 | [Ll]og/ 29 | 30 | # Visual Studio 2015/2017 cache/options directory 31 | .vs/ 32 | # Uncomment if you have tasks that create the project's static files in wwwroot 33 | #wwwroot/ 34 | 35 | # Visual Studio 2017 auto generated files 36 | Generated\ Files/ 37 | 38 | # MSTest test Results 39 | [Tt]est[Rr]esult*/ 40 | [Bb]uild[Ll]og.* 41 | 42 | # NUNIT 43 | *.VisualState.xml 44 | TestResult.xml 45 | 46 | # Build Results of an ATL Project 47 | [Dd]ebugPS/ 48 | [Rr]eleasePS/ 49 | dlldata.c 50 | 51 | # Benchmark Results 52 | BenchmarkDotNet.Artifacts/ 53 | 54 | # .NET Core 55 | project.lock.json 56 | project.fragment.lock.json 57 | artifacts/ 58 | 59 | # StyleCop 60 | StyleCopReport.xml 61 | 62 | # Files built by Visual Studio 63 | *_i.c 64 | *_p.c 65 | *_h.h 66 | *.ilk 67 | *.meta 68 | *.obj 69 | *.iobj 70 | *.pch 71 | *.pdb 72 | *.ipdb 73 | *.pgc 74 | *.pgd 75 | *.rsp 76 | *.sbr 77 | *.tlb 78 | *.tli 79 | *.tlh 80 | *.tmp 81 | *.tmp_proj 82 | *_wpftmp.csproj 83 | *.log 84 | *.vspscc 85 | *.vssscc 86 | .builds 87 | *.pidb 88 | *.svclog 89 | *.scc 90 | 91 | # Chutzpah Test files 92 | _Chutzpah* 93 | 94 | # Visual C++ cache files 95 | ipch/ 96 | *.aps 97 | *.ncb 98 | *.opendb 99 | *.opensdf 100 | *.sdf 101 | *.cachefile 102 | *.VC.db 103 | *.VC.VC.opendb 104 | 105 | # Visual Studio profiler 106 | *.psess 107 | *.vsp 108 | *.vspx 109 | *.sap 110 | 111 | # Visual Studio Trace Files 112 | *.e2e 113 | 114 | # TFS 2012 Local Workspace 115 | $tf/ 116 | 117 | # Guidance Automation Toolkit 118 | *.gpState 119 | 120 | # ReSharper is a .NET coding add-in 121 | _ReSharper*/ 122 | *.[Rr]e[Ss]harper 123 | *.DotSettings.user 124 | 125 | # JustCode is a .NET coding add-in 126 | .JustCode 127 | 128 | # TeamCity is a build add-in 129 | _TeamCity* 130 | 131 | # DotCover is a Code Coverage Tool 132 | *.dotCover 133 | 134 | # AxoCover is a Code Coverage Tool 135 | .axoCover/* 136 | !.axoCover/settings.json 137 | 138 | # Visual Studio code coverage results 139 | *.coverage 140 | *.coveragexml 141 | 142 | # NCrunch 143 | _NCrunch_* 144 | .*crunch*.local.xml 145 | nCrunchTemp_* 146 | 147 | # MightyMoose 148 | *.mm.* 149 | AutoTest.Net/ 150 | 151 | # Web workbench (sass) 152 | .sass-cache/ 153 | 154 | # Installshield output folder 155 | [Ee]xpress/ 156 | 157 | # DocProject is a documentation generator add-in 158 | DocProject/buildhelp/ 159 | DocProject/Help/*.HxT 160 | DocProject/Help/*.HxC 161 | DocProject/Help/*.hhc 162 | DocProject/Help/*.hhk 163 | DocProject/Help/*.hhp 164 | DocProject/Help/Html2 165 | DocProject/Help/html 166 | 167 | # Click-Once directory 168 | publish/ 169 | 170 | # Publish Web Output 171 | *.[Pp]ublish.xml 172 | *.azurePubxml 173 | # Note: Comment the next line if you want to checkin your web deploy settings, 174 | # but database connection strings (with potential passwords) will be unencrypted 175 | *.pubxml 176 | *.publishproj 177 | 178 | # Microsoft Azure Web App publish settings. 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2 | 3 | namespace OpusDotNet 4 | { 5 | /// 6 | /// Provides audio decoding with Opus. 7 | /// 8 | public class OpusDecoder : IDisposable 9 | { 10 | private readonly SafeDecoderHandle _handle; 11 | // Number of samples in the frame size, per channel. 12 | private readonly int _samples; 13 | private readonly int _pcmLength; 14 | 15 | private bool _fec; 16 | 17 | /// 18 | /// Initializes a new instance, with 48000 Hz sample rate and 2 channels. 19 | /// 20 | public OpusDecoder() : this(60, 48000, 2, false) 21 | { 22 | } 23 | 24 | /// 25 | /// Initializes a new instance, with the specified frame size, 48000 Hz sample rate and 2 channels. 26 | /// 27 | /// The frame size used when encoding, 2.5, 5, 10, 20, 40 or 60 ms. 28 | [Obsolete("This constructor was used for the old decode method and is deprecated, please use the new decode method instead.")] 29 | public OpusDecoder(double frameSize) : this(frameSize, 48000, 2, true) 30 | { 31 | } 32 | 33 | /// 34 | /// Initializes a new instance, with the specified sample rate and channels. 35 | /// 36 | /// The sample rate to decode to, 48000, 24000, 16000, 12000 or 8000 Hz. 37 | /// The channels to decode to, mono or stereo. 38 | public OpusDecoder(int sampleRate, int channels) : this(60, sampleRate, channels, false) 39 | { 40 | } 41 | 42 | /// 43 | /// Initializes a new instance, with the specified frame size, sample rate and channels. 44 | /// 45 | /// The frame size used when encoding, 2.5, 5, 10, 20, 40 or 60 ms. 46 | /// The sample rate to decode to, 48000, 24000, 16000, 12000 or 8000 Hz. 47 | /// The channels to decode to, mono or stereo. 48 | [Obsolete("This constructor was used for the old decode method and is deprecated, please use the new decode method instead.")] 49 | public OpusDecoder(double frameSize, int sampleRate, int channels) : this(frameSize, sampleRate, channels, true) 50 | { 51 | } 52 | 53 | private OpusDecoder(double frameSize, int sampleRate, int channels, bool frameSizeWasSpecified) 54 | { 55 | switch (frameSize) 56 | { 57 | case 2.5: 58 | case 5: 59 | case 10: 60 | case 20: 61 | case 40: 62 | case 60: 63 | break; 64 | default: 65 | throw new ArgumentException("Value must be one of the following: 2.5, 5, 10, 20, 40 or 60.", nameof(frameSize)); 66 | } 67 | 68 | switch (sampleRate) 69 | { 70 | case 8000: 71 | case 12000: 72 | case 16000: 73 | case 24000: 74 | case 48000: 75 | break; 76 | default: 77 | throw new ArgumentException("Value must be one of the following: 8000, 12000, 16000, 24000 or 48000.", nameof(sampleRate)); 78 | } 79 | 80 | if (channels < 1 || channels > 2) 81 | { 82 | throw new ArgumentOutOfRangeException(nameof(channels), "Value must be between 1 and 2."); 83 | } 84 | 85 | if (frameSizeWasSpecified) 86 | { 87 | FrameSize = frameSize; 88 | } 89 | 90 | SampleRate = sampleRate; 91 | Channels = channels; 92 | 93 | _samples = API.GetSampleCount(frameSize, sampleRate); 94 | _pcmLength = API.GetPCMLength(_samples, channels); 95 | 96 | _handle = API.opus_decoder_create(sampleRate, channels, out int error); 97 | API.ThrowIfError(error); 98 | } 99 | 100 | /// 101 | /// Gets the frame size, or null if not specified when constructing the current instance. 102 | /// 103 | [Obsolete("This property was used for the old decode method and is deprecated, please use the new decode method instead.")] 104 | public double? FrameSize { get; } 105 | 106 | /// 107 | /// Gets the sample rate, 48000, 24000, 16000, 12000 or 8000 Hz. 108 | /// 109 | public int SampleRate { get; } 110 | 111 | /// 112 | /// Gets the channels, mono or stereo. 113 | /// 114 | public int Channels { get; } 115 | 116 | /// 117 | /// Gets or sets whether to use FEC (forward error correction). NOTE: This can only be set if is set, 118 | /// and only works if the encoder also uses FEC. You also need to indicate when a packet has been lost 119 | /// (by calling with null and -1 as the arguments). 120 | /// 121 | [Obsolete("This property was used for the old decode method and is deprecated, please use the new decode method instead.")] 122 | public bool FEC 123 | { 124 | get => _fec; 125 | set 126 | { 127 | if (FrameSize == null) 128 | { 129 | throw new InvalidOperationException("A frame size has to be specified in the constructor for FEC to work."); 130 | } 131 | 132 | _fec = value; 133 | } 134 | } 135 | 136 | /// 137 | /// Decodes an Opus packet, or indicates packet loss (if is enabled). 138 | /// 139 | /// The Opus packet, or null to indicate packet loss (if is enabled). 140 | /// The maximum number of bytes to use from , or -1 to indicate packet loss 141 | /// (if is enabled). 142 | /// The length of the decoded audio. 143 | /// A byte array containing the decoded audio. 144 | [Obsolete("This method is deprecated, please use the new decode method instead.")] 145 | public unsafe byte[] Decode(byte[] opusBytes, int length, out int decodedLength) 146 | { 147 | if (opusBytes == null && !FEC) 148 | { 149 | throw new ArgumentNullException(nameof(opusBytes), "Value cannot be null when FEC is disabled."); 150 | } 151 | 152 | if (length < 0 && (!FEC || opusBytes != null)) 153 | { 154 | throw new ArgumentOutOfRangeException(nameof(length), $"Value cannot be negative when {nameof(opusBytes)} is not null or FEC is disabled."); 155 | } 156 | 157 | if (opusBytes != null && opusBytes.Length < length) 158 | { 159 | throw new ArgumentOutOfRangeException(nameof(length), $"Value cannot be greater than the length of {nameof(opusBytes)}."); 160 | } 161 | 162 | ThrowIfDisposed(); 163 | 164 | byte[] pcmBytes = new byte[_pcmLength]; 165 | int result; 166 | 167 | fixed (byte* input = opusBytes) 168 | fixed (byte* output = pcmBytes) 169 | { 170 | var inputPtr = (IntPtr)input; 171 | var outputPtr = (IntPtr)output; 172 | 173 | if (opusBytes != null) 174 | { 175 | result = API.opus_decode(_handle, inputPtr, length, outputPtr, _samples, 0); 176 | } 177 | else 178 | { 179 | // If forward error correction is enabled, this will indicate a packet loss. 180 | result = API.opus_decode(_handle, IntPtr.Zero, 0, outputPtr, _samples, FEC ? 1 : 0); 181 | } 182 | } 183 | 184 | API.ThrowIfError(result); 185 | 186 | decodedLength = result * Channels * 2; 187 | return pcmBytes; 188 | } 189 | 190 | /// 191 | /// Decodes an Opus packet or any FEC (forward error correction) data. 192 | /// 193 | /// The Opus packet, or null to indicate packet loss. 194 | /// The maximum number of bytes to read from , or -1 to indicate packet loss. 195 | /// The buffer that the decoded audio will be stored in. 196 | /// The maximum number of bytes to write to . 197 | /// When using FEC (forward error correction) this must be a valid frame size that matches the duration of the missing audio. 198 | /// The number of bytes written to . 199 | public unsafe int Decode(byte[] opusBytes, int opusLength, byte[] pcmBytes, int pcmLength) 200 | { 201 | if (opusLength < 0 && opusBytes != null) 202 | { 203 | throw new ArgumentOutOfRangeException(nameof(opusLength), $"Value cannot be negative when {nameof(opusBytes)} is not null."); 204 | } 205 | 206 | if (opusBytes != null && opusBytes.Length < opusLength) 207 | { 208 | throw new ArgumentOutOfRangeException(nameof(opusLength), $"Value cannot be greater than the length of {nameof(opusBytes)}."); 209 | } 210 | 211 | if (pcmBytes == null) 212 | { 213 | throw new ArgumentNullException(nameof(pcmBytes)); 214 | } 215 | 216 | if (pcmLength < 0) 217 | { 218 | throw new ArgumentOutOfRangeException(nameof(pcmLength), "Value cannot be negative."); 219 | } 220 | 221 | if (pcmBytes.Length < pcmLength) 222 | { 223 | throw new ArgumentOutOfRangeException(nameof(pcmLength), $"Value cannot be greater than the length of {nameof(pcmBytes)}."); 224 | } 225 | 226 | double frameSize = API.GetFrameSize(pcmLength, SampleRate, Channels); 227 | 228 | if (opusBytes == null) 229 | { 230 | switch (frameSize) 231 | { 232 | case 2.5: 233 | case 5: 234 | case 10: 235 | case 20: 236 | case 40: 237 | case 60: 238 | break; 239 | default: 240 | throw new ArgumentException("When using FEC the frame size must be one of the following: 2.5, 5, 10, 20, 40 or 60.", nameof(pcmLength)); 241 | } 242 | } 243 | 244 | ThrowIfDisposed(); 245 | 246 | int result; 247 | int samples = API.GetSampleCount(frameSize, SampleRate); 248 | 249 | fixed (byte* input = opusBytes) 250 | fixed (byte* output = pcmBytes) 251 | { 252 | var inputPtr = (IntPtr)input; 253 | var outputPtr = (IntPtr)output; 254 | 255 | if (opusBytes != null) 256 | { 257 | result = API.opus_decode(_handle, inputPtr, opusLength, outputPtr, samples, 0); 258 | } 259 | else 260 | { 261 | // If forward error correction is enabled, this will indicate a packet loss. 262 | result = API.opus_decode(_handle, IntPtr.Zero, 0, outputPtr, samples, 1); 263 | } 264 | } 265 | 266 | API.ThrowIfError(result); 267 | return API.GetPCMLength(result, Channels); 268 | } 269 | 270 | /// 271 | /// Releases all resources used by the current instance. 272 | /// 273 | public void Dispose() 274 | { 275 | _handle?.Dispose(); 276 | } 277 | 278 | private void ThrowIfDisposed() 279 | { 280 | if (_handle.IsClosed) 281 | { 282 | throw new ObjectDisposedException(GetType().FullName); 283 | } 284 | } 285 | } 286 | } 287 | -------------------------------------------------------------------------------- /OpusDotNet/OpusEncoder.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | 3 | namespace OpusDotNet 4 | { 5 | /// 6 | /// Provides audio encoding with Opus. 7 | /// 8 | public class OpusEncoder : IDisposable 9 | { 10 | private readonly SafeEncoderHandle _handle; 11 | 12 | private int _bitrate; 13 | 14 | /// 15 | /// Initializes a new instance, with the specified intended application, 48000 Hz sample rate and 2 channels. 16 | /// 17 | /// The intended application. 18 | public OpusEncoder(Application application) : this(application, 48000, 2) 19 | { 20 | } 21 | 22 | /// 23 | /// Initializes a new instance, with the specified intended application, sample rate and channels. 24 | /// 25 | /// The intended application. 26 | /// The sample rate in the input audio, 48000, 24000, 16000, 12000 or 8000 Hz. 27 | /// The channels in the input audio, mono or stereo. 28 | public OpusEncoder(Application application, int sampleRate, int channels) 29 | { 30 | if (!Enum.IsDefined(typeof(Application), application)) 31 | { 32 | throw new ArgumentException("Value is not defined in the enumeration.", nameof(application)); 33 | } 34 | 35 | switch (sampleRate) 36 | { 37 | case 8000: 38 | case 12000: 39 | case 16000: 40 | case 24000: 41 | case 48000: 42 | break; 43 | default: 44 | throw new ArgumentException("Value must be one of the following: 8000, 12000, 16000, 24000 or 48000.", nameof(sampleRate)); 45 | } 46 | 47 | if (channels < 1 || channels > 2) 48 | { 49 | throw new ArgumentOutOfRangeException(nameof(channels), "Value must be between 1 and 2."); 50 | } 51 | 52 | Application = application; 53 | SampleRate = sampleRate; 54 | Channels = channels; 55 | Bitrate = 128000; 56 | 57 | _handle = API.opus_encoder_create(sampleRate, channels, (int)application, out int error); 58 | API.ThrowIfError(error); 59 | 60 | // Setting to -1 (OPUS_BITRATE_MAX) enables bitrate to be regulated by the output buffer length. 61 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetBitrate, -1); 62 | API.ThrowIfError(result); 63 | } 64 | 65 | /// 66 | /// Gets the intended application. 67 | /// 68 | public Application Application { get; } 69 | 70 | /// 71 | /// Gets the sample rate, 48000, 24000, 16000, 12000 or 8000 Hz. 72 | /// 73 | public int SampleRate { get; } 74 | 75 | /// 76 | /// Gets the channels, mono or stereo. 77 | /// 78 | public int Channels { get; } 79 | 80 | /// 81 | /// Gets or sets the bitrate, 8000 - 512000 bps. 82 | /// 83 | [Obsolete("This property was used for the old encode method and is deprecated, please use the new encode method instead.")] 84 | public int Bitrate 85 | { 86 | get => _bitrate; 87 | set 88 | { 89 | if (value < 8000 || value > 512000) 90 | { 91 | throw new ArgumentOutOfRangeException(nameof(value), "Value must be between 8000 and 512000."); 92 | } 93 | 94 | _bitrate = value; 95 | } 96 | } 97 | 98 | /// 99 | /// Gets or sets whether VBR (variable bitrate) is enabled. 100 | /// 101 | public bool VBR 102 | { 103 | get 104 | { 105 | ThrowIfDisposed(); 106 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetVBR, out int value); 107 | API.ThrowIfError(result); 108 | 109 | return value == 1; 110 | } 111 | set 112 | { 113 | ThrowIfDisposed(); 114 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetVBR, value ? 1 : 0); 115 | API.ThrowIfError(result); 116 | } 117 | } 118 | 119 | /// 120 | /// Gets or sets the maximum bandpass. 121 | /// 122 | public Bandwidth MaxBandwidth 123 | { 124 | get 125 | { 126 | ThrowIfDisposed(); 127 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetMaxBandwidth, out int value); 128 | API.ThrowIfError(result); 129 | 130 | return (Bandwidth)value; 131 | } 132 | set 133 | { 134 | if (!Enum.IsDefined(typeof(Bandwidth), value)) 135 | { 136 | throw new ArgumentException("Value is not defined in the enumeration.", nameof(value)); 137 | } 138 | 139 | ThrowIfDisposed(); 140 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetMaxBandwidth, (int)value); 141 | API.ThrowIfError(result); 142 | } 143 | } 144 | 145 | /// 146 | /// Gets or sets the computational complexity, 0 - 10. Decreasing this will decrease CPU time, at the expense of quality. 147 | /// 148 | public int Complexity 149 | { 150 | get 151 | { 152 | ThrowIfDisposed(); 153 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetComplexity, out int value); 154 | API.ThrowIfError(result); 155 | 156 | return value; 157 | } 158 | set 159 | { 160 | if (value < 0 || value > 10) 161 | { 162 | throw new ArgumentOutOfRangeException(nameof(value), "Value must be between 0 and 10."); 163 | } 164 | 165 | ThrowIfDisposed(); 166 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetComplexity, value); 167 | API.ThrowIfError(result); 168 | } 169 | } 170 | 171 | /// 172 | /// Gets or sets whether to use FEC (forward error correction). You need to adjust 173 | /// before FEC takes effect. 174 | /// 175 | public bool FEC 176 | { 177 | get 178 | { 179 | ThrowIfDisposed(); 180 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetInbandFEC, out int value); 181 | API.ThrowIfError(result); 182 | 183 | return value == 1; 184 | } 185 | set 186 | { 187 | ThrowIfDisposed(); 188 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetInbandFEC, value ? 1 : 0); 189 | API.ThrowIfError(result); 190 | } 191 | } 192 | 193 | /// 194 | /// Gets or sets the expected packet loss percentage when using FEC (forward error correction). Increasing this will 195 | /// improve quality under loss, at the expense of quality in the absence of packet loss. 196 | /// 197 | public int ExpectedPacketLoss 198 | { 199 | get 200 | { 201 | ThrowIfDisposed(); 202 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetPacketLossPerc, out int value); 203 | API.ThrowIfError(result); 204 | 205 | return value; 206 | } 207 | set 208 | { 209 | if (value < 0 || value > 100) 210 | { 211 | throw new ArgumentOutOfRangeException(nameof(value), "Value must be between 0 and 100."); 212 | } 213 | 214 | ThrowIfDisposed(); 215 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetPacketLossPerc, value); 216 | API.ThrowIfError(result); 217 | } 218 | } 219 | 220 | /// 221 | /// Gets or sets whether to use DTX (discontinuous transmission). When enabled the encoder will produce 222 | /// packets with a length of 2 bytes or less during periods of no voice activity. 223 | /// 224 | public bool DTX 225 | { 226 | get 227 | { 228 | ThrowIfDisposed(); 229 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetDTX, out int value); 230 | API.ThrowIfError(result); 231 | 232 | return value == 1; 233 | } 234 | set 235 | { 236 | ThrowIfDisposed(); 237 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetDTX, value ? 1 : 0); 238 | API.ThrowIfError(result); 239 | } 240 | } 241 | 242 | /// 243 | /// Gets or sets the forced mono/stereo mode. 244 | /// 245 | public ForceChannels ForceChannels 246 | { 247 | get 248 | { 249 | ThrowIfDisposed(); 250 | int result = API.opus_encoder_ctl(_handle, (int)Control.GetForceChannels, out int value); 251 | API.ThrowIfError(result); 252 | 253 | return (ForceChannels)value; 254 | } 255 | set 256 | { 257 | if (!Enum.IsDefined(typeof(ForceChannels), value)) 258 | { 259 | throw new ArgumentException("Value is not defined in the enumeration.", nameof(value)); 260 | } 261 | 262 | ThrowIfDisposed(); 263 | int result = API.opus_encoder_ctl(_handle, (int)Control.SetForceChannels, (int)value); 264 | API.ThrowIfError(result); 265 | } 266 | } 267 | 268 | /// 269 | /// Encodes an Opus frame, the frame size must be one of the following: 2.5, 5, 10, 20, 40 or 60 ms. 270 | /// 271 | /// The Opus frame. 272 | /// The maximum number of bytes to use from . 273 | /// The length of the encoded audio. 274 | /// A byte array containing the encoded audio. 275 | [Obsolete("This method is deprecated, please use the new encode method instead.")] 276 | public unsafe byte[] Encode(byte[] pcmBytes, int length, out int encodedLength) 277 | { 278 | if (pcmBytes == null) 279 | { 280 | throw new ArgumentNullException(nameof(pcmBytes)); 281 | } 282 | 283 | if (length < 0) 284 | { 285 | throw new ArgumentOutOfRangeException(nameof(length), "Value cannot be negative."); 286 | } 287 | 288 | if (pcmBytes.Length < length) 289 | { 290 | throw new ArgumentOutOfRangeException(nameof(length), $"Value cannot be greater than the length of {nameof(pcmBytes)}."); 291 | } 292 | 293 | double frameSize = API.GetFrameSize(length, SampleRate, Channels); 294 | 295 | switch (frameSize) 296 | { 297 | case 2.5: 298 | case 5: 299 | case 10: 300 | case 20: 301 | case 40: 302 | case 60: 303 | break; 304 | default: 305 | throw new ArgumentException("The frame size must be one of the following: 2.5, 5, 10, 20, 40 or 60.", nameof(length)); 306 | } 307 | 308 | ThrowIfDisposed(); 309 | 310 | byte[] opusBytes = new byte[(int)(frameSize * Bitrate / 8 / 1000)]; 311 | int result; 312 | 313 | int samples = API.GetSampleCount(frameSize, SampleRate); 314 | 315 | fixed (byte* input = pcmBytes) 316 | fixed (byte* output = opusBytes) 317 | { 318 | var inputPtr = (IntPtr)input; 319 | var outputPtr = (IntPtr)output; 320 | result = API.opus_encode(_handle, inputPtr, samples, outputPtr, opusBytes.Length); 321 | } 322 | 323 | API.ThrowIfError(result); 324 | 325 | encodedLength = result; 326 | return opusBytes; 327 | } 328 | 329 | /// 330 | /// Encodes an Opus frame, the frame size must be one of the following: 2.5, 5, 10, 20, 40 or 60 ms. 331 | /// 332 | /// The Opus frame. 333 | /// The maximum number of bytes to read from . 334 | /// The buffer that the encoded audio will be stored in. 335 | /// The maximum number of bytes to write to . 336 | /// This will determine the bitrate in the encoded audio. 337 | /// The number of bytes written to . 338 | public unsafe int Encode(byte[] pcmBytes, int pcmLength, byte[] opusBytes, int opusLength) 339 | { 340 | if (pcmBytes == null) 341 | { 342 | throw new ArgumentNullException(nameof(pcmBytes)); 343 | } 344 | 345 | if (pcmLength < 0) 346 | { 347 | throw new ArgumentOutOfRangeException(nameof(pcmLength), "Value cannot be negative."); 348 | } 349 | 350 | if (pcmBytes.Length < pcmLength) 351 | { 352 | throw new ArgumentOutOfRangeException(nameof(pcmLength), $"Value cannot be greater than the length of {nameof(pcmBytes)}."); 353 | } 354 | 355 | if (opusBytes == null) 356 | { 357 | throw new ArgumentNullException(nameof(opusBytes)); 358 | } 359 | 360 | if (opusLength < 0) 361 | { 362 | throw new ArgumentOutOfRangeException(nameof(opusLength), "Value cannot be negative."); 363 | } 364 | 365 | if (opusBytes.Length < opusLength) 366 | { 367 | throw new ArgumentOutOfRangeException(nameof(opusLength), $"Value cannot be greater than the length of {nameof(opusBytes)}."); 368 | } 369 | 370 | double frameSize = API.GetFrameSize(pcmLength, SampleRate, Channels); 371 | 372 | switch (frameSize) 373 | { 374 | case 2.5: 375 | case 5: 376 | case 10: 377 | case 20: 378 | case 40: 379 | case 60: 380 | break; 381 | default: 382 | throw new ArgumentException("The frame size must be one of the following: 2.5, 5, 10, 20, 40 or 60.", nameof(pcmLength)); 383 | } 384 | 385 | ThrowIfDisposed(); 386 | 387 | int result; 388 | int samples = API.GetSampleCount(frameSize, SampleRate); 389 | 390 | fixed (byte* input = pcmBytes) 391 | fixed (byte* output = opusBytes) 392 | { 393 | var inputPtr = (IntPtr)input; 394 | var outputPtr = (IntPtr)output; 395 | result = API.opus_encode(_handle, inputPtr, samples, outputPtr, opusLength); 396 | } 397 | 398 | API.ThrowIfError(result); 399 | return result; 400 | } 401 | 402 | /// 403 | /// Releases all resources used by the current instance. 404 | /// 405 | public void Dispose() 406 | { 407 | _handle?.Dispose(); 408 | } 409 | 410 | private void ThrowIfDisposed() 411 | { 412 | if (_handle.IsClosed) 413 | { 414 | throw new ObjectDisposedException(GetType().FullName); 415 | } 416 | } 417 | } 418 | } 419 | --------------------------------------------------------------------------------