SpeechAudioFormatInfo.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / AudioFormat / SpeechAudioFormatInfo.cs / 1 / SpeechAudioFormatInfo.cs
                        

                        
                            //------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------- 

using System; 
using System.ComponentModel; 
using System.Speech.Internal.Synthesis;
 
namespace System.Speech.AudioFormat
{

    /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo"]/*' /> 

    [Serializable] 
#if !SPEECHSERVER 
    public
#else 
    internal
#endif
 class SpeechAudioFormatInfo
    { 

        //******************************************************************* 
        // 
        // Constructors
        // 
        //*******************************************************************

        #region Constructors
 
        private SpeechAudioFormatInfo (EncodingFormat encodingFormat, int samplesPerSecond, short bitsPerSample, short channelCount, byte [] formatSpecificData)
        { 
            if (encodingFormat == 0) 
            {
                throw new ArgumentException (SR.Get (SRID.CannotUseCustomFormat), "encodingFormat"); 
            }
            if (samplesPerSecond <= 0)
            {
                throw new ArgumentOutOfRangeException ("samplesPerSecond", SR.Get (SRID.MustBeGreaterThanZero)); 
            }
            if (bitsPerSample <= 0) 
            { 
                throw new ArgumentOutOfRangeException ("bitsPerSample", SR.Get (SRID.MustBeGreaterThanZero));
            } 
            if (channelCount <= 0)
            {
                throw new ArgumentOutOfRangeException ("channelCount", SR.Get (SRID.MustBeGreaterThanZero));
            } 

            _encodingFormat = encodingFormat; 
            _samplesPerSecond = samplesPerSecond; 
            _bitsPerSample = bitsPerSample;
            _channelCount = channelCount; 
            if (formatSpecificData == null)
            {
                _formatSpecificData = new byte [0];
            } 
            else
            { 
                _formatSpecificData = (byte []) formatSpecificData.Clone (); 
            }
 
            switch (encodingFormat)
            {
                case EncodingFormat.ALaw:
                case EncodingFormat.ULaw: 
                    if (bitsPerSample != 8)
                    { 
                        throw new ArgumentOutOfRangeException ("bitsPerSample"); 
                    }
                    if (formatSpecificData != null && formatSpecificData.Length != 0) 
                    {
                        throw new ArgumentOutOfRangeException ("formatSpecificData");
                    }
                    break; 
            }
        } 
 
        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.AudioFormatInfo1"]/*' />
        [EditorBrowsable (EditorBrowsableState.Advanced)] 
        public SpeechAudioFormatInfo (EncodingFormat encodingFormat, int samplesPerSecond, int bitsPerSample, int channelCount, int averageBytesPerSecond, int blockAlign, byte [] formatSpecificData)
            : this (encodingFormat, samplesPerSecond, (short) bitsPerSample, (short) channelCount, formatSpecificData)
        {
            // Don't explicitly check these are sensible values - allow flexibility here as some formats may do unexpected things here. 
            if (averageBytesPerSecond <= 0)
            { 
                throw new ArgumentOutOfRangeException ("averageBytesPerSecond", SR.Get (SRID.MustBeGreaterThanZero)); 
            }
            if (blockAlign <= 0) 
            {
                throw new ArgumentOutOfRangeException ("blockAlign", SR.Get (SRID.MustBeGreaterThanZero));
            }
            _averageBytesPerSecond = averageBytesPerSecond; 
            _blockAlign = (short) blockAlign;
 
        } 

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.AudioFormatInfo2"]/*' /> 
        public SpeechAudioFormatInfo (int samplesPerSecond, AudioBitsPerSample bitsPerSample, AudioChannel channel)
            : this (EncodingFormat.Pcm, samplesPerSecond, (short) bitsPerSample, (short) channel, null)
        {
            // Don't explicitly check these are sensible values - allow flexibility here as some formats may do unexpected things here. 
            _blockAlign = (short) (_channelCount * (_bitsPerSample / 8));
            _averageBytesPerSecond = _samplesPerSecond * _blockAlign; 
 
        }
 
        #endregion


        //******************************************************************** 
        //
        // Public Properties 
        // 
        //*******************************************************************
 
        #region Public Properties

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.AverageBytesPerSecond"]/*' />
        [EditorBrowsable (EditorBrowsableState.Advanced)] 
        public int AverageBytesPerSecond { get { return _averageBytesPerSecond; } }
 
        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.BitsPerSample"]/*' /> 
        [EditorBrowsable (EditorBrowsableState.Advanced)]
        public int BitsPerSample { get { return _bitsPerSample; } } 

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.BlockAlign"]/*' />
        [EditorBrowsable (EditorBrowsableState.Advanced)]
        public int BlockAlign { get { return _blockAlign; } } 

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.Format"]/*' /> 
        public EncodingFormat EncodingFormat { get { return _encodingFormat; } } 

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.NumberOfChannels"]/*' /> 
        public int ChannelCount { get { return _channelCount; } }

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.SamplesPerSecond"]/*' />
        public int SamplesPerSecond { get { return _samplesPerSecond; } } 

        #endregion 
 

 
        //********************************************************************
        //
        // Public Methods
        // 
        //********************************************************************
 
        #region Public Methods 

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.FormatSpecificData"]/*' /> 
        public byte [] FormatSpecificData () { return (byte []) _formatSpecificData.Clone (); }

        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.Equals"]/*' />
        public override bool Equals (object obj) 
        {
            SpeechAudioFormatInfo refObj = obj as SpeechAudioFormatInfo; 
            if (refObj == null) 
            {
                return false; 
            }

            if (!(_averageBytesPerSecond.Equals (refObj._averageBytesPerSecond) &&
                _bitsPerSample.Equals (refObj._bitsPerSample) && 
                _blockAlign.Equals (refObj._blockAlign) &&
                _encodingFormat.Equals (refObj._encodingFormat) && 
                _channelCount.Equals (refObj._channelCount) && 
                _samplesPerSecond.Equals (refObj._samplesPerSecond)))
            { 
                return false;
            }
            if (_formatSpecificData.Length != refObj._formatSpecificData.Length)
            { 
                return false;
            } 
            for (int i = 0; i < _formatSpecificData.Length; i++) 
            {
                if (_formatSpecificData [i] != refObj._formatSpecificData [i]) 
                {
                    return false;
                }
            } 
            return true;
        } 
 
        /// TODOC <_include file='doc\SpeechAudioFormatInfo.uex' path='docs/doc[@for="SpeechAudioFormatInfo.GetHashCode"]/*' />
        public override int GetHashCode () 
        {
            return _averageBytesPerSecond.GetHashCode ();
        }
 
        #endregion
 
        //******************************************************************* 
        //
        // Internal Methods 
        //
        //********************************************************************

        #region Internal Methods 
#if !SPEECHSERVER
        internal byte [] WaveFormat 
        { 
            get
            { 
                WAVEFORMATEX wfx = new WAVEFORMATEX ();
                wfx.wFormatTag = (short) EncodingFormat;
                wfx.nChannels = (short) ChannelCount;
                wfx.nSamplesPerSec = SamplesPerSecond; 
                wfx.nAvgBytesPerSec = AverageBytesPerSecond;
                wfx.nBlockAlign = (short) BlockAlign; 
                wfx.wBitsPerSample = (short) BitsPerSample; 
                wfx.cbSize = (short) FormatSpecificData ().Length;
 
                byte [] abWfx = wfx.ToBytes ();
                if (wfx.cbSize > 0)
                {
                    byte [] wfxTemp = new byte [abWfx.Length + wfx.cbSize]; 
                    Array.Copy (abWfx, wfxTemp, abWfx.Length);
                    Array.Copy (FormatSpecificData (), 0, wfxTemp, abWfx.Length, wfx.cbSize); 
                    abWfx = wfxTemp; 
                }
                return abWfx; 
            }
        }
#endif
        #endregion 

        //******************************************************************* 
        // 
        // Private Fields
        // 
        //*******************************************************************

        #region Private Fields
 
        private int _averageBytesPerSecond;
        private short _bitsPerSample; 
        private short _blockAlign; 
        private EncodingFormat _encodingFormat;
        private short _channelCount; 
        private int _samplesPerSecond;
        private byte [] _formatSpecificData;

        #endregion 

    } 
 
    //*******************************************************************
    // 
    // Public Properties
    //
    //********************************************************************
 
    #region Public Properties
 
    ///  
    /// TODOC
    ///  
#if !SPEECHSERVER
    public
#else
    internal 
#endif
 enum AudioChannel 
    { 
        /// 
        /// TODOC 
        /// 
        Mono = 1,
        /// 
        /// TODOC 
        /// 
        Stereo = 2 
    } 

    ///  
    /// TODOC
    /// 
#if !SPEECHSERVER
    public 
#else
    internal 
#endif 
 enum AudioBitsPerSample
    { 
        /// 
        /// TODOC
        /// 
        Eight = 8, 
        /// 
        /// TODOC 
        ///  
        Sixteen = 16
    } 

    #endregion

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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