hvirtual/quicktime/decore50/store.c

   1 /**************************************************************************
   2  *                                                                        *
   3  * This code has been developed by Andrea Graziani. This software is an   *
   4  * implementation of a part of one or more MPEG-4 Video tools as          *
   5  * specified in ISO/IEC 14496-2 standard.  Those intending to use this    *
   6  * software module in hardware or software products are advised that its  *
   7  * use may infringe existing patents or copyrights, and any such use      *
   8  * would be at such party's own risk.  The original developer of this     *
   9  * software module and his/her company, and subsequent editors and their  *
  10  * companies (including Project Mayo), will have no liability for use of  *
  11  * this software or modifications or derivatives thereof.                 *
  12  *                                                                        *
  13  * Project Mayo gives users of the Codec a license to this software       *
  14  * module or modifications thereof for use in hardware or software        *
  15  * products claiming conformance to the MPEG-4 Video Standard as          *
  16  * described in the Open DivX license.                                    *
  17  *                                                                        *
  18  * The complete Open DivX license can be found at                         *
  19  * http://www.projectmayo.com/opendivx/license.php                        *
  20  *                                                                        *
  21  **************************************************************************/
  22 /**
  23 *  Copyright (C) 2001 - Project Mayo
  24  *
  25  * Andrea Graziani
  26  *
  27  * DivX Advanced Research Center <darc@projectmayo.com>
  28 *
  29 **/
  30 // store.c //
  31
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <fcntl.h>
  35
  36 #include "mp4_vars.h"
  37
  38 #include "debug.h"
  39 #include "store.h"
  40
  41 /**
  42  *
  43 **/
  44
  45 static void store_yuv (char *name, unsigned char *src, int offset, int incr, int width, int height);
  46 static void putbyte (int c);
  47
  48 /**/
  49
  50 FILE * outfile;
  51 int create_flag = 1;
  52 const char mode_create[] = "wb";
  53 const char mode_open[] = "ab";
  54
  55 /***/
  56
  57 // Purpose: store a frame in yuv format
  58 void storeframe (unsigned char *src[], int width, int height)
  59 {
  60         int offset = 0;
  61         int hor_size = mp4_state->horizontal_size;
  62
  63   store_yuv (mp4_state->outputname, src[0], offset, width, hor_size, height);
  64
  65   offset >>= 1;
  66   width >>= 1;
  67   height >>= 1;
  68         hor_size >>= 1;
  69
  70   store_yuv (mp4_state->outputname, src[1], offset, width, hor_size, height);
  71   store_yuv (mp4_state->outputname, src[2], offset, width, hor_size, height);
  72 }
  73
  74 /***/
  75
  76 static void store_yuv (char *name, unsigned char *src, int offset,
  77                         int incr, int width, int height)
  78 {
  79   int i;
  80   unsigned char *p;
  81         const char * mode = create_flag ? mode_create : mode_open;
  82
  83
  84         if (create_flag)
  85                 create_flag = 0;
  86
  87   if ((outfile = fopen (name, mode)) == NULL)
  88   {
  89     _Print ("Error: Couldn't append to %s\n", name);
  90     exit(0);
  91   }
  92
  93   for (i = 0; i < height; i++)
  94   {
  95     p = src + offset + incr * i;
  96                 fwrite(p, width, 1, outfile);
  97   }
  98
  99   fclose (outfile);
 100 }