Process from imagedata

src/Tesseract/Interop/BaseApi.cs

@@ -82,6 +82,9 @@ int BaseApiInit(HandleRef handle,
         int BaseApiSetDebugVariable(HandleRef handle, string name, IntPtr valPtr);
 
         // image analysis
+        [DllImport(Constants.TesseractDllName, CallingConvention = CallingConvention.Cdecl, EntryPoint = "TessBaseAPISetImage")]
+        void BaseApiSetImage(HandleRef handle, IntPtr imagedata, int width, int height, int bytes_per_pixel, int bytes_per_line);
+
         [RuntimeDllImport(Constants.TesseractDllName, CallingConvention = CallingConvention.Cdecl, EntryPoint = "TessBaseAPISetImage2")]
         void BaseApiSetImage(HandleRef handle, HandleRef pixHandle);
 
@@ -290,4 +293,4 @@ public static string ResultIteratorGetUTF8Text(HandleRef handle, PageIteratorLev
             }
         }
     }
-}
+}

src/Tesseract/TesseractEngine.cs

@@ -495,6 +495,64 @@ public Page Process(Bitmap image, string inputName, Rect region, PageSegMode? pa
             new PageDisposalHandle(page, pix);
             return page;
         }
+
+		/// <summary>
+		/// Processes a specified region in the image using the specified page layout analysis mode.
+		/// </summary>
+		/// <remarks>
+		/// You can only have one result iterator open at any one time.
+		/// </remarks>
+		/// <param name="imagedata">The array with the Pixeldata.</param>
+		/// <param name="width">The width of the image.</param>
+		/// <param name="height">The height of the image.</param>
+		/// <param name="bytes_per_pixel">Bytes per pixel.</param>
+		/// <param name="bytes_per_line">Number of bytes per Line. (Stride)</param>
+		/// <param name="inputName">Sets the input file's name, only needed for training or loading a uzn file.</param>
+		/// <param name="region">The image region to process.</param>
+		/// <param name="pageSegMode">The page layout analyasis method to use.</param>
+		/// <returns>A result iterator</returns>
+		public Page Process(byte[] imagedata, int width, int height, int bytes_per_pixel, int bytes_per_line, string inputName, Rect region, PageSegMode? pageSegMode = null)
+		{
+			GCHandle pinnedImagedata = GCHandle.Alloc(imagedata, GCHandleType.Pinned);
+			IntPtr imagedataP = pinnedImagedata.AddrOfPinnedObject();
+			Page returnPage = Process(imagedataP, width, height, bytes_per_pixel, bytes_per_line, inputName, region, pageSegMode);
+			pinnedImagedata.Free();
+
+			return returnPage;
+		}
+
+		/// <summary>
+		/// Processes a specified region in the image using the specified page layout analysis mode.
+		/// </summary>
+		/// <remarks>
+		/// You can only have one result iterator open at any one time.
+		/// </remarks>
+		/// <param name="imagedata">The array with the Pixeldata.</param>
+		/// <param name="width">The width of the image.</param>
+		/// <param name="height">The height of the image.</param>
+		/// <param name="bytes_per_pixel">Bytes per pixel.</param>
+		/// <param name="bytes_per_line">Number of bytes per Line. (Stride)</param>
+		/// <param name="inputName">Sets the input file's name, only needed for training or loading a uzn file.</param>
+		/// <param name="region">The image region to process.</param>
+		/// <param name="pageSegMode">The page layout analyasis method to use.</param>
+		/// <returns>A result iterator</returns>
+		public Page Process(IntPtr imagedata, int width, int height, int bytes_per_pixel, int bytes_per_line, string inputName, Rect region, PageSegMode? pageSegMode = null)
+		{
+			if (processCount > 0) throw new InvalidOperationException("Only one image can be processed at once. Please make sure you dispose of the page once your finished with it.");
+
+			processCount++;
+
+			Interop.TessApi.BaseAPISetPageSegMode(handle, pageSegMode.HasValue ? pageSegMode.Value : DefaultPageSegMode);
+			Interop.TessApi.BaseApiSetImage(handle, imagedata, width, height, bytes_per_pixel, bytes_per_line);
+			Interop.TessApi.BaseApiSetRectangle(handle, region.X1, region.Y1, region.Width, region.Height);
+			if (!String.IsNullOrEmpty(inputName))
+			{
+				Interop.TessApi.BaseApiSetInputName(handle, inputName);
+			}
+			var page = new Page(this);
+			page.Disposed += OnIteratorDisposed;
+			return page;
+		}
 
         protected override void Dispose(bool disposing)
         {