Represents the format chunk in a WAVE media format file.
Inheritance: RiffChunk, ISupportBinaryImage
Ejemplo n.º 1
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 /// <summary>
 /// Constructs a new WAVE data chunk for the specified format.
 /// </summary>
 /// <param name="waveFormat"><see cref="WaveFormatChunk"/> that describes this <see cref="WaveDataChunk"/>.</param>
 public WaveDataChunk(WaveFormatChunk waveFormat)
     : base(RiffTypeID)
 {
     m_waveFormat   = waveFormat;
     m_sampleBlocks = new List <LittleBinaryValue[]>();
     m_chunkSize    = -1;
 }
Ejemplo n.º 2
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        /// <summary>
        /// Creates a <see cref="WaveDataReader"/> instance created from a WAV stream.
        /// </summary>
        /// <param name="waveStream">The WAV stream. The data in the stream must include all headers that would be present in a WAV file.</param>
        /// <returns>The WaveData instance created from a WAV stream.</returns>
        /// <remarks>
        /// This method is similar to the <see cref="WaveDataReader(Stream)"/> constructor,
        /// however this method will first search the stream for a format chunk in order to set
        /// up the WaveData object with proper format info.
        /// </remarks>
        public static WaveDataReader FromStream(Stream waveStream)
        {
            RiffChunk       riffChunk;
            WaveFormatChunk waveFormat = null;
            WaveDataReader  waveData   = null;

            while ((object)waveData == null)
            {
                riffChunk = RiffChunk.ReadNext(waveStream);

                switch (riffChunk.TypeID)
                {
                case RiffHeaderChunk.RiffTypeID:
                    // ReSharper disable once ObjectCreationAsStatement
                    new RiffHeaderChunk(riffChunk, waveStream, "WAVE");
                    break;

                case WaveFormatChunk.RiffTypeID:
                    waveFormat = new WaveFormatChunk(riffChunk, waveStream);
                    break;

                case WaveDataChunk.RiffTypeID:
                    waveData = new WaveDataReader(waveFormat, waveStream);
                    break;

                default:
                    // Skip unnecessary sections
                    waveStream.Seek(riffChunk.ChunkSize, SeekOrigin.Current);
                    break;
                }
            }

            return(waveData);
        }
Ejemplo n.º 3
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        /// <summary>Reads a new WAVE format section from the specified stream.</summary>
        /// <param name="preRead">Pre-parsed <see cref="RiffChunk"/> header.</param>
        /// <param name="source">Source stream to read data from.</param>
        /// <param name="waveFormat">Format of the data section to be parsed.</param>
        /// <exception cref="InvalidOperationException">WAVE format or extra parameters section too small, wave file corrupted.</exception>
        public WaveDataChunk(RiffChunk preRead, Stream source, WaveFormatChunk waveFormat)
            : base(preRead, RiffTypeID)
        {
            m_waveFormat   = waveFormat;
            m_sampleBlocks = new List <LittleBinaryValue[]>();
            m_chunkSize    = -1;

            int      blockSize      = waveFormat.BlockAlignment;
            int      sampleSize     = waveFormat.BitsPerSample / 8;
            int      channels       = waveFormat.Channels;
            TypeCode sampleTypeCode = m_waveFormat.GetSampleTypeCode();

            LittleBinaryValue[] sampleBlock;
            byte[] buffer = new byte[blockSize];

            int bytesRead = source.Read(buffer, 0, blockSize);

            while (bytesRead == blockSize)
            {
                // Create a new sample block, one little-endian formatted binary sample value for each channel
                sampleBlock = new LittleBinaryValue[channels];

                for (int x = 0; x < channels; x++)
                {
                    sampleBlock[x] = new LittleBinaryValue(sampleTypeCode, buffer, x * sampleSize, sampleSize);
                }

                m_sampleBlocks.Add(sampleBlock);

                bytesRead = source.Read(buffer, 0, blockSize);
            }
        }
Ejemplo n.º 4
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 /// <summary>
 /// Creates a new instance of the <see cref="WaveDataReader"/> class.
 /// </summary>
 /// <param name="waveFormat">The format of the wave stream.</param>
 /// <param name="waveStream">The stream containing wave data.</param>
 public WaveDataReader(WaveFormatChunk waveFormat, Stream waveStream)
 {
     m_format     = waveFormat ?? DEFAULT_WAVE_FORMAT_CHUNK;
     m_waveStream = waveStream;
     m_blockSize  = m_format.BlockAlignment;
     m_sampleSize = m_format.BitsPerSample / 8;
     m_channels   = m_format.Channels;
     m_sampleType = m_format.GetSampleTypeCode();
 }
Ejemplo n.º 5
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        /// <summary>
        /// Creates a copy of the <see cref="WaveFormatChunk"/>.
        /// </summary>
        /// <returns>A new copy of the <see cref="WaveFormatChunk"/>.</returns>
        public new WaveFormatChunk Clone()
        {
            WaveFormatChunk waveFormatChunk = new WaveFormatChunk(m_sampleRate, m_bitsPerSample, m_channels, m_audioFormat);

            if ((object)m_extraParameters != null)
            {
                byte[] extraParameters = new byte[m_extraParameters.Length];
                Buffer.BlockCopy(m_extraParameters, 0, extraParameters, 0, m_extraParameters.Length);
                waveFormatChunk.ExtraParameters = extraParameters;
            }

            return(waveFormatChunk);
        }
Ejemplo n.º 6
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        /// <summary>
        /// Creates a copy of the <see cref="WaveFormatChunk"/>.
        /// </summary>
        /// <returns>A new copy of the <see cref="WaveFormatChunk"/>.</returns>
        public new WaveFormatChunk Clone()
        {
            WaveFormatChunk waveFormatChunk = new WaveFormatChunk(m_sampleRate, m_bitsPerSample, m_channels, m_audioFormat);

            if ((object)m_extraParameters != null)
            {
                byte[] extraParameters = new byte[m_extraParameters.Length];
                Buffer.BlockCopy(m_extraParameters, 0, extraParameters, 0, m_extraParameters.Length);
                waveFormatChunk.ExtraParameters = extraParameters;
            }

            return waveFormatChunk;
        }
Ejemplo n.º 7
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 /// <summary>
 /// Constructs a new WAVE data chunk for the specified format.
 /// </summary>
 /// <param name="waveFormat"><see cref="WaveFormatChunk"/> that describes this <see cref="WaveDataChunk"/>.</param>
 public WaveDataChunk(WaveFormatChunk waveFormat)
     : base(RiffTypeID)
 {
     m_waveFormat = waveFormat;
     m_sampleBlocks = new List<LittleBinaryValue[]>();
     m_chunkSize = -1;
 }
Ejemplo n.º 8
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        /// <summary>Reads a new WAVE format section from the specified stream.</summary>
        /// <param name="preRead">Pre-parsed <see cref="RiffChunk"/> header.</param>
        /// <param name="source">Source stream to read data from.</param>
        /// <param name="waveFormat">Format of the data section to be parsed.</param>
        /// <exception cref="InvalidOperationException">WAVE format or extra parameters section too small, wave file corrupted.</exception>
        public WaveDataChunk(RiffChunk preRead, Stream source, WaveFormatChunk waveFormat)
            : base(preRead, RiffTypeID)
        {
            m_waveFormat = waveFormat;
            m_sampleBlocks = new List<LittleBinaryValue[]>();
            m_chunkSize = -1;

            int blockSize = waveFormat.BlockAlignment;
            int sampleSize = waveFormat.BitsPerSample / 8;
            int channels = waveFormat.Channels;
            TypeCode sampleTypeCode = m_waveFormat.GetSampleTypeCode();
            LittleBinaryValue[] sampleBlock;
            byte[] buffer = new byte[blockSize];

            int bytesRead = source.Read(buffer, 0, blockSize);

            while (bytesRead == blockSize)
            {
                // Create a new sample block, one little-endian formatted binary sample value for each channel
                sampleBlock = new LittleBinaryValue[channels];

                for (int x = 0; x < channels; x++)
                {
                    sampleBlock[x] = new LittleBinaryValue(sampleTypeCode, buffer, x * sampleSize, sampleSize);
                }

                m_sampleBlocks.Add(sampleBlock);

                bytesRead = source.Read(buffer, 0, blockSize);
            }
        }
Ejemplo n.º 9
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 /// <summary>
 /// Creates a new <see cref="WaveFormatExtensible"/> object based on the <see cref="WaveFormatChunk"/> settings.
 /// </summary>
 /// <param name="waveFormat">A <see cref="WaveFormatChunk"/> format.</param>
 public WaveFormatExtensible(WaveFormatChunk waveFormat)
 {
     m_sampleValue = (ushort)waveFormat.BitsPerSample;
     m_channelMask = Speakers.All;
     m_subFormat = DataFormatSubType.PCM;
 }
Ejemplo n.º 10
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 /// <summary>
 /// Creates a new instance of the <see cref="WaveDataReader"/> class.
 /// </summary>
 /// <param name="waveFormat">The format of the wave stream.</param>
 /// <param name="waveStream">The stream containing wave data.</param>
 public WaveDataReader(WaveFormatChunk waveFormat, Stream waveStream)
 {
     m_format = waveFormat ?? DEFAULT_WAVE_FORMAT_CHUNK;
     m_waveStream = waveStream;
     m_blockSize = m_format.BlockAlignment;
     m_sampleSize = m_format.BitsPerSample / 8;
     m_channels = m_format.Channels;
     m_sampleType = m_format.GetSampleTypeCode();
 }
Ejemplo n.º 11
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        /// <summary>
        /// Creates a <see cref="WaveDataReader"/> instance created from a WAV stream.
        /// </summary>
        /// <param name="waveStream">The WAV stream. The data in the stream must include all headers that would be present in a WAV file.</param>
        /// <returns>The WaveData instance created from a WAV stream.</returns>
        /// <remarks>
        /// This method is similar to the <see cref="WaveDataReader.WaveDataReader(Stream)"/> constructor,
        /// however this method will first search the stream for a format chunk in order to set
        /// up the WaveData object with proper format info.
        /// </remarks>
        public static WaveDataReader FromStream(Stream waveStream)
        {
            RiffChunk riffChunk;
            WaveFormatChunk waveFormat = null;
            WaveDataReader waveData = null;

            while ((object)waveData == null)
            {
                riffChunk = RiffChunk.ReadNext(waveStream);

                switch (riffChunk.TypeID)
                {
                    case RiffHeaderChunk.RiffTypeID:
                        new RiffHeaderChunk(riffChunk, waveStream, "WAVE");
                        break;
                    case WaveFormatChunk.RiffTypeID:
                        waveFormat = new WaveFormatChunk(riffChunk, waveStream);
                        break;
                    case WaveDataChunk.RiffTypeID:
                        waveData = new WaveDataReader(waveFormat, waveStream);
                        break;
                    default:
                        // Skip unnecessary sections
                        waveStream.Seek(riffChunk.ChunkSize, SeekOrigin.Current);
                        break;
                }
            }

            return waveData;
        }
Ejemplo n.º 12
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 /// <summary>
 /// Creates a new <see cref="WaveFormatExtensible"/> object based on the <see cref="WaveFormatChunk"/> settings.
 /// </summary>
 /// <param name="waveFormat">A <see cref="WaveFormatChunk"/> format.</param>
 public WaveFormatExtensible(WaveFormatChunk waveFormat)
 {
     m_sampleValue = (ushort)waveFormat.BitsPerSample;
     m_channelMask = Speakers.All;
     m_subFormat   = DataFormatSubType.PCM;
 }