src/Tizen.Multimedia.Util/Interop/Interop.ImageUtil.Encode.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.Runtime.InteropServices;
  19 using Tizen;
  20 using Tizen.Multimedia.Util;
  21
  22 internal static partial class Interop
  23 {
  24     internal static partial class ImageUtil
  25     {
  26         internal static class Encode
  27         {
  28             [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
  29             internal delegate void EncodeCompletedCallback(ImageUtilError ImageUtilError, IntPtr userData, ulong size);
  30
  31             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_run_async")]
  32             internal static extern ImageUtilError EncodeRunAsync(ImageEncoderHandle handle,
  33                 EncodeCompletedCallback callback, IntPtr userData = default(IntPtr));
  34
  35             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_create")]
  36             internal static extern ImageUtilError Create(ImageFormat type, out ImageEncoderHandle handle);
  37
  38             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_destroy")]
  39             internal static extern ImageUtilError Destroy(IntPtr handle);
  40
  41             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_resolution")]
  42             internal static extern ImageUtilError SetResolution(ImageEncoderHandle handle, uint width, uint height);
  43
  44             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_colorspace")]
  45             internal static extern ImageUtilError SetColorspace(ImageEncoderHandle handle, ImageColorSpace colorspace);
  46
  47             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_quality")]
  48             internal static extern ImageUtilError SetQuality(ImageEncoderHandle handle, int quality);
  49
  50             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_png_compression")]
  51             internal static extern ImageUtilError SetPngCompression(ImageEncoderHandle handle, PngCompression compression);
  52
  53             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_gif_frame_delay_time")]
  54             internal static extern ImageUtilError SetGifFrameDelayTime(ImageEncoderHandle handle, ulong delayTime);
  55
  56             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_output_path")]
  57             internal static extern ImageUtilError SetOutputPath(ImageEncoderHandle handle, string path);
  58
  59             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_input_buffer")]
  60             internal static extern ImageUtilError SetInputBuffer(ImageEncoderHandle handle, byte[] srcBuffer);
  61
  62             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_set_output_buffer")]
  63             internal static extern ImageUtilError SetOutputBuffer(ImageEncoderHandle handle, out IntPtr dstBuffer);
  64
  65             [DllImport(Libraries.ImageUtil, EntryPoint = "image_util_encode_run")]
  66             internal static extern ImageUtilError Run(ImageEncoderHandle handle, out ulong size);
  67         }
  68
  69         internal class ImageEncoderHandle : SafeHandle
  70         {
  71             protected ImageEncoderHandle() : base(IntPtr.Zero, true)
  72             {
  73             }
  74
  75             public override bool IsInvalid => handle == IntPtr.Zero;
  76
  77
  78             protected override bool ReleaseHandle()
  79             {
  80                 var ret = Encode.Destroy(handle);
  81                 if (ret != ImageUtilError.None)
  82                 {
  83                     Log.Debug(GetType().FullName, $"Failed to release native {GetType().Name}");
  84                     return false;
  85                 }
  86
  87                 return true;
  88             }
  89         }
  90     }
  91 }