External MOVIE (Sample)

GUI_MOVIE_CreateMovieEx.c
File(s) required	GUI_MOVIE_CreateMovieEx.c Video.emf
Runs in simulation	Yes
Runs on target	Yes
Download	GUI_MOVIE_CreateMovieEx.zip

This sample demonstrates how to display an emWin movie from external memory. It supports both the usage of Windows file system and emFile.

Code

/*********************************************************************
*                    SEGGER Microcontroller GmbH                     *
*        Solutions for real time microcontroller applications        *
**********************************************************************
*                                                                    *
*        (c) 1996 - 2020  SEGGER Microcontroller GmbH                *
*                                                                    *
*        Internet: www.segger.com    Support:  support@segger.com    *
*                                                                    *
**********************************************************************

** emWin V6.10 - Graphical user interface for embedded applications **
emWin is protected by international copyright laws.   Knowledge of the
source code may not be used to write a similar product.  This file may
only  be used  in accordance  with  a license  and should  not be  re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File        : GUI_MOVIE_CreateMovieEx.c
Purpose     : Sample that demonstrates how to play an emWin movie
              file from extern memory.
              This sample supports both usage in the Windows
              Simulation as well as usage on a target device using
              emFile.
Requirements: WindowManager - ( )
              MemoryDevices - ( )
              AntiAliasing  - ( )
              VNC-Server    - ( )
              PNG-Library   - ( )
              TrueTypeFonts - ( )
---------------------------END-OF-HEADER------------------------------
*/

#include "DIALOG.h"
#include <stdio.h>
#ifdef WIN32
  #include <windows.h>
#else
  #include "FS.h"
#endif

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#ifdef WIN32
  #define FILE_PATH "C:\\Work\\emWin\\Intern\\TutorialV6\\Movies\\Video.emf"
#else
  #define FILE_PATH "Video.emf"
#endif

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
static int _TimeStart;
static int _TimeEnd;

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _GetData
*
* Function description
*   Reading data directly from file system
*/
int _GetData(void * p, const U8 ** ppData, unsigned NumBytes, U32 Off) {
  U32 NumBytesRead;
#ifdef WIN32
  HANDLE hFile;

  hFile = *(HANDLE *)p;
  SetFilePointer(hFile, Off, 0, FILE_BEGIN);
  ReadFile(hFile, (U8 *)*ppData, NumBytes, &NumBytesRead, NULL);
#else
  FS_FILE * pFile;

  pFile = (FS_FILE *)p;
  FS_SetFilePos(pFile, Off, FS_FILE_BEGIN);
  NumBytesRead = FS_Read(pFile, (U8 *)*ppData, NumBytes);
#endif
  return NumBytesRead;
}

/*********************************************************************
*
*       _cbNotify
*
* Function description
*   Uses multiple buffering (if available) to avoid tearing effects.
*/
static void _cbNotify(GUI_HMEM hMovie, int Notification, U32 CurrentFrame) {
  char acBuffer[32];
  int  TimeD;
  int  Fps;
  
  GUI_USE_PARA(hMovie);
  GUI_USE_PARA(CurrentFrame);
  switch (Notification) {
  case GUI_MOVIE_NOTIFICATION_PREDRAW:
    //
    // Begin multi-buffering if available.
    //
    GUI_MULTIBUF_Begin();
    //
    // Cache is used instead if there is no multi-buffering.
    //
    LCD_ControlCache(LCD_CC_LOCK);
    _TimeStart = GUI_GetTime();
    break;
  case GUI_MOVIE_NOTIFICATION_POSTDRAW:
    //
    // Calculate and show FPS.
    //
    _TimeEnd = GUI_GetTime();
    TimeD = (_TimeEnd - _TimeStart) ? _TimeEnd - _TimeStart : 1;
    Fps = (1000 / TimeD);
    if (Fps > 30) {
      sprintf(acBuffer, "FPS: max.");
    } else {
      sprintf(acBuffer, "FPS: %d", Fps);
    }
    GUI_DispStringAt(acBuffer, 0, 0);
    //
    // End multi-buffering / cache.
    //
    LCD_ControlCache(LCD_CC_UNLOCK);
    GUI_MULTIBUF_End();
    break;
  case GUI_MOVIE_NOTIFICATION_START:
    break;
  case GUI_MOVIE_NOTIFICATION_STOP:
    break;
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  GUI_MOVIE_HANDLE hMovie;
  GUI_MOVIE_INFO   Info;
#ifdef WIN32
  HANDLE           hFile;
  #define PARAM    &hFile
#else
  FS_FILE        * pFile;
  const char       acVolumeName[64];
  #define PARAM    pFile
#endif

  //
  // Init emWin.
  //
  GUI_Init();
#ifdef WIN32
  hFile = CreateFile(FILE_PATH, GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
#else
  //
  // Start emFile.
  //
  FS_Init();
  //
  // Enable long file name support.
  //
  FS_FAT_SupportLFN();
  //
  // Mount volume.
  //
  FS_GetVolumeName(0, acVolumeName, sizeof(acVolumeName));
  if (FS_Mount(acVolumeName) > 0) {
    //
    // Open file.
    //
    pFile = FS_FOpen(FILE_PATH, "r");
  }
#endif
  //
  // Get info about movie.
  //
  if(GUI_MOVIE_GetInfoEx(_GetData, PARAM, &Info) == 0) {
    //
    // Create movie handle and show it in an endless loop.
    //
    hMovie = GUI_MOVIE_CreateEx(_GetData, PARAM, _cbNotify);
    if (hMovie) {
      GUI_MOVIE_Show(hMovie, 0, 0, 1);
    }
  }

  while (1) {
    GUI_Delay(100);
  }
}

/*************************** End of file ****************************/