Esempio n. 1
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        public Bitmap GetPreview(PreviewSettings settings, int previewNumber, int deinterlace)
        {
            SourceTitle title = this.Titles.TitleList.FirstOrDefault(t => t.Index == settings.TitleNumber);

            // Create the Expected Output Geometry details for libhb.
            hb_geometry_settings_s uiGeometry = new hb_geometry_settings_s
            {
                crop      = new[] { settings.Cropping.Top, settings.Cropping.Bottom, settings.Cropping.Left, settings.Cropping.Right },
                itu_par   = 0,
                keep      = (int)AnamorphicFactory.KeepSetting.HB_KEEP_WIDTH + (settings.KeepDisplayAspect ? 0x04 : 0), // TODO Keep Width?
                maxWidth  = settings.MaxWidth,
                maxHeight = settings.MaxHeight,
                mode      = (int)(hb_anamorphic_mode_t)settings.Anamorphic,
                modulus   = settings.Modulus ?? 16,
                geometry  = new hb_geometry_s
                {
                    height = settings.Height,
                    width  = settings.Width,
                    par    = settings.Anamorphic != Anamorphic.Custom
                        ? new hb_rational_t {
                        den = title.Geometry.PAR.Den, num = title.Geometry.PAR.Num
                    }
                        : new hb_rational_t {
                        den = settings.PixelAspectY, num = settings.PixelAspectX
                    }
                }
            };

            // Fetch the image data from LibHb
            IntPtr     resultingImageStuct = HBFunctions.hb_get_preview2(this.hbHandle, settings.TitleNumber, previewNumber, ref uiGeometry, deinterlace);
            hb_image_s image = InteropUtilities.ToStructureFromPtr <hb_image_s>(resultingImageStuct);

            // Copy the filled image buffer to a managed array.
            int stride_width    = image.plane[0].stride;
            int stride_height   = image.plane[0].height_stride;
            int imageBufferSize = stride_width * stride_height;  // int imageBufferSize = outputWidth * outputHeight * 4;

            byte[] managedBuffer = new byte[imageBufferSize];
            Marshal.Copy(image.plane[0].data, managedBuffer, 0, imageBufferSize);

            var bitmap = new Bitmap(image.width, image.height);

            BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, image.width, image.height), ImageLockMode.WriteOnly, PixelFormat.Format32bppRgb);

            IntPtr ptr = bitmapData.Scan0; // Pointer to the first pixel.

            for (int i = 0; i < image.height; i++)
            {
                try
                {
                    Marshal.Copy(managedBuffer, i * stride_width, ptr, stride_width);
                    ptr = IntPtr.Add(ptr, image.width * 4);
                }
                catch (Exception exc)
                {
                    Debug.WriteLine(exc); // In theory, this will allow a partial image display if this happens. TODO add better logging of this.
                }
            }

            bitmap.UnlockBits(bitmapData);

            // Close the image so we don't leak memory.
            IntPtr nativeJobPtrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));

            Marshal.WriteIntPtr(nativeJobPtrPtr, resultingImageStuct);
            HBFunctions.hb_image_close(nativeJobPtrPtr);
            Marshal.FreeHGlobal(nativeJobPtrPtr);

            return(bitmap);
        }
        /// <summary>
        /// Gets the language object for the given code.
        /// </summary>
        /// <param name="code">The ISO-639-2 code for the language.</param>
        /// <returns>Object that describes the language.</returns>
        public static Language Get(string code)
        {
            iso639_lang_t language = InteropUtilities.ToStructureFromPtr <iso639_lang_t>(HBFunctions.lang_for_code2(code));

            return(HandBrakeUnitConversionHelpers.NativeToLanguage(language));
        }