/// <summary>
/// Initializes a new instance of the <see cref="JpegLSMetadataInfo"/> class.
/// </summary>
/// <param name="parameters">The parameters.</param>
/// <exception cref="InvalidDataException">Thrown when one the values are out of bounds.</exception>
internal JpegLSMetadataInfo(ref JlsParameters parameters)
{
if (parameters.Width < 1)
{
throw new InvalidDataException("parameters.Width < 1");
}
if (parameters.Height < 1)
{
throw new InvalidDataException("parameters.Height < 1");
}
if (parameters.BitsPerSample < 2)
{
throw new InvalidDataException("parameters.BitsPerSample < 2");
}
if (parameters.Components < 1)
{
throw new InvalidDataException("parameters.Components < 1");
}
Contract.EndContractBlock();
width = parameters.Width;
height = parameters.Height;
componentCount = parameters.Components;
bitsPerComponent = parameters.BitsPerSample;
AllowedLossyError = parameters.AllowedLossyError;
InterleaveMode = parameters.InterleaveMode;
}
internal static extern JpegLSError JpegLsEncode64(
[Out] byte[] compressedData,
long compressedLength,
out long byteCountWritten,
[In] byte[] uncompressedData,
long uncompressedLength,
[In] ref JlsParameters info,
[Out] StringBuilder errorMessage);
internal static extern JpegLSError JpegLsEncode64(
[Out] byte[] compressedData,
long compressedLength,
out long byteCountWritten,
[In] byte[] uncompressedData,
long uncompressedLength,
[In] ref JlsParameters info,
IntPtr reserved);
private static int GetUncompressedSize(ref JlsParameters info)
{
Contract.Ensures(Contract.Result <int>() > 0);
var size = info.Width * info.Height * info.Components * ((info.BitsPerSample + 7) / 8);
Contract.Assume(size > 0);
return(size);
}
internal void CopyTo(ref JlsParameters parameters)
{
parameters.Width = Width;
parameters.Height = Height;
parameters.Components = ComponentCount;
parameters.BitsPerSample = BitsPerComponent;
parameters.InterleaveMode = InterleaveMode;
parameters.AllowedLossyError = AllowedLossyError;
parameters.OutputBgr = OutputBgr;
}
private static void JpegLsReadHeaderThrowWhenError(byte[] source, int length, out JlsParameters info)
{
Contract.Requires(source != null);
var errorMessage = new StringBuilder(256);
JpegLSError result = Is64BitProcess ?
SafeNativeMethods.JpegLsReadHeader64(source, length, out info, errorMessage) :
SafeNativeMethods.JpegLsReadHeader(source, length, out info, errorMessage);
HandleResult(result, errorMessage);
}
internal static extern JpegLSError JpegLsReadHeader64([In] byte[] compressedSource, long compressedLength, out JlsParameters info, [Out] StringBuilder errorMessage);
internal static extern JpegLSError JpegLsReadHeader64([In] byte[] compressedSource, long compressedLength, out JlsParameters info, [Out] StringBuilder errorMessage);
private static int GetUncompressedSize(ref JlsParameters info)
{
Contract.Ensures(Contract.Result<int>() > 0);
var size = info.Width * info.Height * info.Components * ((info.BitsPerSample + 7) / 8);
Contract.Assume(size > 0);
return size;
}
private static void JpegLsReadHeaderThrowWhenError(byte[] source, int length, out JlsParameters info)
{
Contract.Requires(source != null);
var errorMessage = new StringBuilder(256);
JpegLSError result = Environment.Is64BitProcess ?
SafeNativeMethods.JpegLsReadHeader64(source, length, out info, errorMessage) :
SafeNativeMethods.JpegLsReadHeader(source, length, out info, errorMessage);
HandleResult(result, errorMessage);
}
private static int GetUncompressedSize(ref JlsParameters info)
{
var size = info.Width * info.Height * info.Components * ((info.BitsPerSample + 7) / 8);
return(size);
}
private static void JpegLsReadHeaderThrowWhenError(byte[] source, int length, out JlsParameters info)
{
var result = Environment.Is64BitProcess ?
SafeNativeMethods.JpegLsReadHeaderX64(source, length, out info, IntPtr.Zero) :
SafeNativeMethods.JpegLsReadHeaderX86(source, length, out info, IntPtr.Zero);
HandleResult(result);
}
internal static extern JpegLSError JpegLsReadHeader64([In] byte[] compressedSource, long compressedLength, out JlsParameters info, IntPtr reserved);