/// <summary>
/// Encode the media data.
/// </summary>
/// <param name="videoAudio">The video and audio content.</param>
/// <returns>The encoded media data.</returns>
public byte[] Encode(VideoAudioModel videoAudio)
{
byte[] data = null;
VideoModel?video = videoAudio.Video;
AudioModel?audio = videoAudio.Audio;
MemoryStream memoryStream = null;
BinaryWriter binaryWriter = null;
try
{
// Create the encoding stream.
memoryStream = new MemoryStream();
// Create a new binary reader from the stream
// set the starting position at the begining
binaryWriter = new BinaryWriter(memoryStream);
binaryWriter.BaseStream.Seek(0, SeekOrigin.Begin);
// Write the media format.
if (videoAudio.MediaFormat > 0)
{
binaryWriter.Write(videoAudio.MediaFormat);
}
else
{
binaryWriter.Write(Nequeo.Media.Streaming.MediaFormat);
}
// If there is video data.
if (video != null && video.Value.Header.ContainsVideo)
{
// Write each pice of binary data to the stream.
binaryWriter.Write(video.Value.Header.ContainsVideo);
binaryWriter.Write(video.Value.Header.FrameRate);
binaryWriter.Write(video.Value.Header.FrameSizeWidth);
binaryWriter.Write(video.Value.Header.FrameSizeHeight);
binaryWriter.Write(Helper.GetImageTypeInt32(video.Value.Header.ImageType));
binaryWriter.Write(CompressionAlgorithmHelper.GetAlgorithmInt32(video.Value.Header.CompressionAlgorithm));
binaryWriter.Write(video.Value.Header.Duration);
binaryWriter.Write((ushort)0);
binaryWriter.Write(video.Value.Video.Length);
// Get the images in the video.
for (int v = 0; v < video.Value.Video.Length; v++)
{
binaryWriter.Write(video.Value.Video[v].Data.Length);
binaryWriter.Write(video.Value.Video[v].Data);
}
}
else
{
// Let the stream know there is no video data.
binaryWriter.Write(false);
}
// If there is audio data.
if (audio != null && audio.Value.Header.ContainsAudio)
{
// Write the audio data.
binaryWriter.Write(audio.Value.Header.ContainsAudio);
binaryWriter.Write(audio.Value.Header.Channels);
binaryWriter.Write(audio.Value.Header.SamplingRate);
binaryWriter.Write(audio.Value.Header.SampleSize);
binaryWriter.Write(Helper.GetSoundTypeInt32(audio.Value.Header.SoundType));
binaryWriter.Write(CompressionAlgorithmHelper.GetAlgorithmInt32(audio.Value.Header.CompressionAlgorithm));
binaryWriter.Write(audio.Value.Header.Duration);
binaryWriter.Write((ushort)1);
binaryWriter.Write(audio.Value.Audio.Length);
// Get the sounds in the audio.
for (int s = 0; s < audio.Value.Audio.Length; s++)
{
binaryWriter.Write(audio.Value.Audio[s].StartAtFrameIndex);
binaryWriter.Write(audio.Value.Audio[s].Data.Length);
binaryWriter.Write(audio.Value.Audio[s].Data);
}
}
else
{
// Let the stream know there is no audio data.
binaryWriter.Write(false);
}
// Assign the data.
data = memoryStream.ToArray();
}
catch (Exception)
{
throw;
}
finally
{
if (binaryWriter != null)
{
binaryWriter.Close();
}
if (memoryStream != null)
{
memoryStream.Close();
}
}
// Return the data.
return(data);
}
/// <summary>
/// Decode the media data.
/// </summary>
/// <param name="encodedData">The encoded media data.</param>
/// <returns>The decoded media data.</returns>
public VideoAudioModel Decode(byte[] encodedData)
{
VideoModel video = new VideoModel();
AudioModel audio = new AudioModel();
VideoHeader videoHeader = new VideoHeader();
AudioHeader audioHeader = new AudioHeader();
VideoAudioModel videoAudio = new VideoAudioModel();
MemoryStream memoryStream = null;
BinaryReader binaryReader = null;
try
{
// Load the encoded data into the memory stream.
memoryStream = new MemoryStream(encodedData);
// Create a new binary reader from the stream
// set the starting position at the begining
binaryReader = new BinaryReader(memoryStream);
binaryReader.BaseStream.Seek(0, SeekOrigin.Begin);
// Read the media format.
videoAudio.MediaFormat = binaryReader.ReadInt32();
// Is there video data.
videoHeader.ContainsVideo = binaryReader.ReadBoolean();
// If there is video data.
if (videoHeader.ContainsVideo)
{
// Read each pice of binary data.
videoHeader.FrameRate = binaryReader.ReadDouble();
videoHeader.FrameSizeWidth = binaryReader.ReadInt32();
videoHeader.FrameSizeHeight = binaryReader.ReadInt32();
videoHeader.ImageType = Helper.GetImageType(binaryReader.ReadInt32());
videoHeader.CompressionAlgorithm = CompressionAlgorithmHelper.GetAlgorithm(binaryReader.ReadInt32());
videoHeader.Duration = binaryReader.ReadDouble();
ushort mediaVideoType = binaryReader.ReadUInt16();
video.ImageCount = binaryReader.ReadInt32();
// Create the image collection.
ImageModel[] images = new ImageModel[video.ImageCount];
// Get the images in the video.
for (int v = 0; v < video.ImageCount; v++)
{
// Create the image.
ImageModel image = new ImageModel();
image.Size = binaryReader.ReadInt32();
image.Data = binaryReader.ReadBytes(image.Size);
// Assign this image.
images[v] = image;
}
// Assign the image collection.
video.Video = images;
}
// Assign the video header.
video.Header = videoHeader;
// Is there audio data.
audioHeader.ContainsAudio = binaryReader.ReadBoolean();
// If there is audio data.
if (audioHeader.ContainsAudio)
{
// Read the audio data.
audioHeader.Channels = binaryReader.ReadInt16();
audioHeader.SamplingRate = binaryReader.ReadInt32();
audioHeader.SampleSize = binaryReader.ReadInt16();
audioHeader.SoundType = Helper.GetSoundType(binaryReader.ReadInt32());
audioHeader.CompressionAlgorithm = CompressionAlgorithmHelper.GetAlgorithm(binaryReader.ReadInt32());
audioHeader.Duration = binaryReader.ReadDouble();
ushort mediaAudioType = binaryReader.ReadUInt16();
audio.SoundCount = binaryReader.ReadInt32();
// Create the sound collection.
SoundModel[] sounds = new SoundModel[audio.SoundCount];
// Get the sounds in the audio.
for (int s = 0; s < audio.SoundCount; s++)
{
// Create the sound.
SoundModel sound = new SoundModel();
sound.StartAtFrameIndex = binaryReader.ReadInt32();
sound.Size = binaryReader.ReadInt32();
sound.Data = binaryReader.ReadBytes(sound.Size);
// Assign this sound.
sounds[s] = sound;
}
// Assign the sound collection.
audio.Audio = sounds;
}
// Assign the audio header.
audio.Header = audioHeader;
}
catch (Exception)
{
throw;
}
finally
{
if (binaryReader != null)
{
binaryReader.Close();
}
if (memoryStream != null)
{
memoryStream.Close();
}
}
// Assign the video and audio data.
videoAudio.Video = video;
videoAudio.Audio = audio;
// Return the video and audio data.
return(videoAudio);
}