public static int Init()
{
lock (initLock)
{
if (inited)
{
return(IJL_OK);
}
pjcore = Marshal.AllocHGlobal(Marshal.SizeOf(jcore));
Marshal.StructureToPtr(jcore, pjcore, true);
lastErrCode = ijlInit(pjcore);
if (lastErrCode == IJL_OK)
{
jcore = (TJPEG_CORE_PROPERTIES)Marshal.PtrToStructure(pjcore, typeof(TJPEG_CORE_PROPERTIES));
jcore.DIBChannels = 3;
jcore.DIBColor = TIJL_COLOR.IJL_BGR;
jcore.JPGChannels = 3;
jcore.JPGColor = TIJL_COLOR.IJL_YCBCR;
jcore.jprops.processor_type = TPROCESSOR_TYPE.IJL_NEW_PROCESSOR;
inited = true;
}
return(lastErrCode);
}
}
public static int RawToJpg(byte[] raw, int width, int height, out byte[] jpg, bool bottomUp = true, uint CompressionQuality = 75)
{
jpg = new byte[0];
if (lastErrCode == IJL_OK)
{
IntPtr buffIn = Marshal.AllocCoTaskMem(raw.Length);
IntPtr buffOut = Marshal.AllocCoTaskMem(raw.Length);
Marshal.Copy(raw, 0, buffIn, raw.Length);
try
{
lock (initLock)
{
jcore.DIBBytes = buffIn;
jcore.DIBHeight = bottomUp ? -height : height;
jcore.DIBWidth = (uint)width;
jcore.DIBPadBytes = (uint)IJL_DIB_PAD_BYTES(Convert.ToInt32(jcore.DIBWidth), Convert.ToInt32(jcore.DIBChannels));
jcore.JPGFile = (IntPtr)0;
jcore.JPGBytes = buffOut;
jcore.JPGSizeBytes = (uint)raw.Length;
jcore.JPGWidth = (uint)width;
jcore.JPGHeight = (uint)height;
jcore.jquality = CompressionQuality;
Marshal.StructureToPtr(jcore, pjcore, true);
if (inited)
{
lastErrCode = ijlWrite(pjcore, TIJLIOType.IJL_JBUFF_WRITEWHOLEIMAGE);
}
else
{
lastErrCode = IJL_NOT_INITED;
}
if (lastErrCode == IJL_OK)
{
jcore = (TJPEG_CORE_PROPERTIES)Marshal.PtrToStructure(pjcore, typeof(TJPEG_CORE_PROPERTIES));
jpg = new byte[(int)jcore.JPGSizeBytes];
Marshal.Copy(buffOut, jpg, 0, jpg.Length);
}
}
}
finally
{
Marshal.FreeCoTaskMem(buffOut);
Marshal.FreeCoTaskMem(buffIn);
}
return(lastErrCode);
}
else
{
return(lastErrCode);
}
}
public static int JpgToRaw(byte[] jpg, out byte[] raw, out int width, out int height, bool bottomUp = true)
{
raw = new byte[0];
width = 0;
height = 0;
if (lastErrCode == IJL_OK)
{
IntPtr buffIn = Marshal.AllocCoTaskMem(jpg.Length);
Marshal.Copy(jpg, 0, buffIn, jpg.Length);
try
{
lock (initLock)
{
jcore.JPGFile = (IntPtr)0;
jcore.JPGBytes = buffIn;
jcore.JPGSizeBytes = (uint)jpg.Length;
Marshal.StructureToPtr(jcore, pjcore, true);
lastErrCode = ijlRead(pjcore, TIJLIOType.IJL_JBUFF_READPARAMS);
if (lastErrCode == IJL_OK)
{
jcore = (TJPEG_CORE_PROPERTIES)Marshal.PtrToStructure(pjcore, typeof(TJPEG_CORE_PROPERTIES));
width = (int)jcore.JPGWidth;
height = (int)jcore.JPGHeight;
jcore.DIBChannels = 3;
jcore.DIBColor = TIJL_COLOR.IJL_RGB;
jcore.DIBWidth = (uint)width;
jcore.DIBHeight = bottomUp ? -height : height;
jcore.DIBPadBytes = (uint)IJL_DIB_PAD_BYTES(width, (int)jcore.DIBChannels);
int rawSize = width * height * 4 + 1;
IntPtr buffOut = Marshal.AllocCoTaskMem(rawSize);
jcore.DIBBytes = buffOut;
try
{
Marshal.StructureToPtr(jcore, pjcore, true);
if (inited)
{
lastErrCode = ijlRead(pjcore, TIJLIOType.IJL_JBUFF_READWHOLEIMAGE);
}
else
{
lastErrCode = IJL_NOT_INITED;
}
if (lastErrCode == IJL_OK)
{
raw = new byte[rawSize];
Marshal.Copy(buffOut, raw, 0, rawSize);
}
}
finally
{
Marshal.FreeCoTaskMem(buffOut);
}
}
}
}
finally
{
Marshal.FreeCoTaskMem(buffIn);
}
return(lastErrCode);
}
else
{
return(lastErrCode);
}
}
