HowToUse_Dll.cs

/*  Copyright (c) MediaArea.net SARL. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license that can
 *  be found in the License.html file in the root of the source tree.
 */

//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Microsoft Visual C# example
//
// To make this example working, you must put MediaInfo.Dll and Example.ogg
// in the "./Bin/__ConfigurationName__" folder
// and add MediaInfoDll.cs to your project
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Text;
using System.IO;
using MediaInfoLib;

namespace MediaInfoLib_MSCS
{
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.RichTextBox richTextBox1;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Methode requise pour la prise en charge du concepteur - ne modifiez pas
        /// le contenu de cette méthode avec l'éditeur de code.
        /// </summary>
        private void InitializeComponent()
        {
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.SuspendLayout();
            //
            // richTextBox1
            //
            this.richTextBox1.Location = new System.Drawing.Point(0, 0);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(768, 512);
            this.richTextBox1.TabIndex = 0;
            this.richTextBox1.Text = "";
            //
            // Form1
            //
            this.ClientSize = new System.Drawing.Size(770, 514);
            this.Controls.Add(this.richTextBox1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "How to use MediaInfo.Dll";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>


        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }

        private void Form1_Load(object sender, System.EventArgs e)
        {
            //Test if version of DLL is compatible : 3rd argument is "version of DLL tested;Your application name;Your application version"
            String ToDisplay;
            MediaInfo MI = new MediaInfo();

            ToDisplay = MI.Option("Info_Version", "0.7.0.0;MediaInfoDLL_Example_CS;0.7.0.0");
            if (ToDisplay.Length == 0)
            {
                richTextBox1.Text = "MediaInfo.Dll: this version of the DLL is not compatible";
                return;
            }

            //Information about MediaInfo
            ToDisplay += "\r\n\r\nInfo_Parameters\r\n";
            ToDisplay += MI.Option("Info_Parameters");

            ToDisplay += "\r\n\r\nInfo_Capacities\r\n";
            ToDisplay += MI.Option("Info_Capacities");

            ToDisplay += "\r\n\r\nInfo_Codecs\r\n";
            ToDisplay += MI.Option("Info_Codecs");

            //An example of how to use the library
            ToDisplay += "\r\n\r\nOpen\r\n";
            MI.Open("Example.ogg");

            ToDisplay += "\r\n\r\nInform with Complete=false\r\n";
            MI.Option("Complete");
            ToDisplay += MI.Inform();

            ToDisplay += "\r\n\r\nInform with Complete=true\r\n";
            MI.Option("Complete", "1");
            ToDisplay += MI.Inform();

            ToDisplay += "\r\n\r\nCustom Inform\r\n";
            MI.Option("Inform", "General;File size is %FileSize% bytes");
            ToDisplay += MI.Inform();

            ToDisplay += "\r\n\r\nGet with Stream=General and Parameter='FileSize'\r\n";
            ToDisplay += MI.Get(0, 0, "FileSize");

            ToDisplay += "\r\n\r\nGet with Stream=General and Parameter=46\r\n";
            ToDisplay += MI.Get(0, 0, 46);

            ToDisplay += "\r\n\r\nCount_Get with StreamKind=Stream_Audio\r\n";
            ToDisplay += MI.Count_Get(StreamKind.Audio);

            ToDisplay += "\r\n\r\nGet with Stream=General and Parameter='AudioCount'\r\n";
            ToDisplay += MI.Get(StreamKind.General, 0, "AudioCount");

            ToDisplay += "\r\n\r\nGet with Stream=Audio and Parameter='StreamCount'\r\n";
            ToDisplay += MI.Get(StreamKind.Audio, 0, "StreamCount");

            ToDisplay += "\r\n\r\nClose\r\n";
            MI.Close();

            //Example with a stream
            //ToDisplay+="\r\n"+ExampleWithStream()+"\r\n";

            //Displaying the text
            richTextBox1.Text = ToDisplay;
        }

        String ExampleWithStream()
        {
            //Initilaizing MediaInfo
            MediaInfo MI = new MediaInfo();

            //From: preparing an example file for reading
            FileStream From = new FileStream("Example.ogg", FileMode.Open, FileAccess.Read);

            //From: preparing a memory buffer for reading
            byte[] From_Buffer = new byte[64*1024];
            int    From_Buffer_Size; //The size of the read file buffer

            //Preparing to fill MediaInfo with a buffer
            MI.Open_Buffer_Init(From.Length, 0);

            //The parsing loop
            do
            {
                //Reading data somewhere, do what you want for this.
                From_Buffer_Size = From.Read(From_Buffer, 0, 64 * 1024);

                //Sending the buffer to MediaInfo
                System.Runtime.InteropServices.GCHandle GC = System.Runtime.InteropServices.GCHandle.Alloc(From_Buffer, System.Runtime.InteropServices.GCHandleType.Pinned);
                IntPtr From_Buffer_IntPtr = GC.AddrOfPinnedObject();
                Status Result = (Status)MI.Open_Buffer_Continue(From_Buffer_IntPtr, (IntPtr)From_Buffer_Size);
                GC.Free();
                if ((Result & Status.Finalized) == Status.Finalized)
                    break;

                //Testing if MediaInfo request to go elsewhere
                if (MI.Open_Buffer_Continue_GoTo_Get() != -1)
                {
                    Int64 Position = From.Seek(MI.Open_Buffer_Continue_GoTo_Get(), SeekOrigin.Begin); //Position the file
                    MI.Open_Buffer_Init(From.Length, Position); //Informing MediaInfo we have seek
                }
            }
            while (From_Buffer_Size > 0);

            //Finalizing
            MI.Open_Buffer_Finalize(); //This is the end of the stream, MediaInfo must finnish some work

            //Get() example
            return "Container format is " + MI.Get(StreamKind.General, 0, "Format");
        }
    }
}