public void EncodeFromRaw()
{
const string testImage = "obama-240p.raw";
var path = Path.GetFullPath(Path.Combine(TestImageDirectory, testImage));
var imageByte = File.ReadAllBytes(path);
using var image = ImageHelper.FromRaw(imageByte, 427, 240, 427 * 3, 3, true);
using var compressionParameters = new CompressionParameters();
OpenJpeg.SetDefaultEncoderParameters(compressionParameters);
compressionParameters.TcpNumLayers = 1;
compressionParameters.CodingParameterDistortionAllocation = 1;
using var codec = OpenJpeg.CreateCompress(CodecFormat.J2k);
OpenJpeg.SetInfoHandler(codec, new DelegateHandler <MsgCallback>(MsgInfoCallback), IntPtr.Zero);
OpenJpeg.SetWarnHandler(codec, new DelegateHandler <MsgCallback>(MsgWarnCallback), IntPtr.Zero);
OpenJpeg.SetErrorHandler(codec, new DelegateHandler <MsgCallback>(MsgErrorCallback), IntPtr.Zero);
Assert.True(OpenJpeg.SetupEncoder(codec, compressionParameters, image));
var bufferLength = imageByte.Length + 1024;
var outputBuffer = Marshal.AllocHGlobal(bufferLength);
var buffer = new Buffer
{
Data = outputBuffer,
Length = bufferLength,
Position = 0
};
var size = Marshal.SizeOf(buffer);
var userData = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(buffer, userData, false);
using var stream = OpenJpeg.StreamCreate((ulong)buffer.Length, false);
OpenJpeg.StreamSetUserData(stream, userData);
OpenJpeg.StreamSetUserDataLength(stream, buffer.Length);
OpenJpeg.StreamSetWriteFunction(stream, new DelegateHandler <StreamWrite>(StreamWriteCallback));
OpenJpeg.StreamSetReadFunction(stream, new DelegateHandler <StreamRead>(StreamReadCallback));
OpenJpeg.StreamSetSeekFunction(stream, new DelegateHandler <StreamSeek>(StreamSeekCallback));
OpenJpeg.StreamSetSkipFunction(stream, new DelegateHandler <StreamSkip>(StreamSkipCallback));
Assert.True(OpenJpeg.StartCompress(codec, image, stream));
Assert.True(OpenJpeg.Encode(codec, stream));
Assert.True(OpenJpeg.EndCompress(codec, stream));
var outputPath = Path.Combine(ResultDirectory, nameof(this.EncodeFromRaw), $"{Path.GetFileNameWithoutExtension(testImage)}.j2k");
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
var tmp = Marshal.PtrToStructure <Buffer>(userData);
var output = new byte[tmp.Position];
Marshal.Copy(buffer.Data, output, 0, output.Length);
File.WriteAllBytes(outputPath, output);
Marshal.FreeHGlobal(outputBuffer);
Marshal.FreeHGlobal(userData);
}
public void StreamCreate()
{
var targets = new[]
{
new { IsReadStream = true },
new { IsReadStream = false }
};
foreach (var target in targets)
{
var stream = OpenJpeg.StreamCreate(1024, target.IsReadStream);
this.DisposeAndCheckDisposedState(stream);
}
}