image.c

/*
 * Copyright © 1999 by Henning Zabel <henning@uni-paderborn.de>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * gphoto driver for the Mustek MDC800 Digital Camera. The driver
 * supports rs232 and USB. It automatically detects which Kernelnode
 * is used.
 */

#include <string.h>
#include "image.h"
#include "print.h"

static const unsigned char Huffman_Tab[424] =
{
      0xFF,0xC4,0x01,0xA2,
      /* DC_Luminance_Bits */
      0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
      /* DC_Luminance_Value */
      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0A, 0x0B,
      /* DC_Chrominance_Bits */
      1, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
      /* DC_Chrominance_Value */
      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0A, 0x0B,
      /* AC_Luminance_Bits */
      0x10, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7D,
      /* AC_Luminance_Value */
      0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
      0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
      0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08,
      0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0,
      0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16,
      0x17, 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28,
      0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
      0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
      0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
      0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
      0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
      0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
      0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
      0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
      0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
      0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5,
      0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4,
      0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
      0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
      0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
      /* AC_Chrominance_Bits */
      0x11, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77,
      /* AC_Chrominance_Value */
      0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
      0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
      0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
      0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0,
      0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34,
      0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26,
      0x27, 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38,
      0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
      0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
      0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
      0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
      0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
      0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96,
      0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5,
      0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4,
      0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3,
      0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
      0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
      0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9,
      0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
      /* Blank data */
      0xFF, 0xFE, 0x01, 0x8F
};


static const unsigned char File_Header[41]=
{
      /* JPG file start marker */
      0xFF, 0xD8,
      /* Application marker */
      0xFF, 0xE0, 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00, 0x01,
      0x00, 0x01, 0x00, 0x48, 0x00, 0x48, 0x00, 0x00,
      /* Application marker */
      0xFF, 0xE1, 0x00, 0x0E, 0x43, 0x41, 0x4D, 0x2D, 0x4D, 0x44,
      0x43, 0x38, 0x30, 0x30, 0x00, 0x00,
      /* Quantization table marker */
      0xFF, 0xDB, 0x00, 0x84, 0x00
};


static const unsigned char File_Header1[24]=
{
      /* JPG file start marker */
      0xFF, 0xD8,
      /* Application marker */
      0xFF, 0xE0, 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,  0x01,
      0x00, 0x01, 0x00, 0x48,             0x00, 0x48, 0x00, 0x00,
      /* Application marker */
      0xFF, 0xE1,       0x0F, 0xEC
};

static const unsigned char File_Header2[34]=
{
      /* JPG file start marker */
      0xFF, 0xD8,
      /* Application marker */
      0xFF, 0xE0, 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00, 0x01,
      0x00, 0x01, 0x00, 0x48,       0x00, 0x48, 0x00, 0x00,
      /* Application marker */
      0xFF, 0xE1, 0x00, 0x0E, 0x43, 0x41, 0x4D, 0x2D, 0x4D, 0x44,
      0x43, 0x38, 0x30, 0x30
};


/* For Thumbnail: 112x96 */
static const unsigned char SOF_SOS1[33]=
{
      /* Start of frame marker */
      0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0x60, 0x00, 0x70, 0x03,
      0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
      /* Start of scan marker */
      0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
      0x11, 0x00, 0x3F, 0x00
};


/* For Economic quality image: 506x384 */
static const unsigned char SOF_SOS2[33]=
{
      /* Start of frame marker */
      0xFF, 0xC0, 0x00, 0x11, 0x08, 0x01, 0x80, 0x01, 0xFA, 0x03,
      0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
      /* Start of scan marker */
      0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
      0x11, 0x00, 0x3F, 0x00
};


/* For Standard and High quality image: 1012x768 */
static const unsigned char SOF_SOS3[33]=
{
      /* Start of frame marker */
      0xFF, 0xC0, 0x00, 0x11, 0x08, 0x03, 0x00, 0x03, 0xF4, 0x03,
      0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
      /* Start of scan marker */
      0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
      0x11, 0x00, 0x3F, 0x00
};


/*
 * corrects downloaded data
 *
 * thumbnail :  1 data is a thumbnail
 * quality :    0 economy , 1 standard, 2 High
 * location :   1 internal, 0 CF-Card
 */
int mdc800_correctImageData (unsigned char* buffer, int thumbnail,int quality,int location)
{
      printCError ("(mdc800_correctImageData) thumbnail:%i quality:%i location:%i \n", thumbnail, quality, location);
      if (thumbnail)
      {
            if (location == 1)
            {
                  memcpy (buffer, File_Header,41);
                  *(buffer+105)=1;
                  buffer+=170;
                  memcpy (buffer, Huffman_Tab, 424);
                  buffer+=821;
                  memcpy (buffer,SOF_SOS1,33);
            }
            else
            {
                  *(buffer+22)=0x00;
                  *(buffer+23)=0x0e;
            }
            return 1;
      }
      else
      {
            if (location == 1)
            {
                  memcpy (buffer, File_Header1, 24);
                  buffer+=4096;
                  memcpy (buffer, File_Header, 41);
                  *buffer=*(buffer+1)=0;
                  *(buffer+105)=1;
                  buffer+=170;
                  memcpy (buffer, Huffman_Tab,424);
                  buffer+=821;
                  switch (quality)
                  {
                        case 0:
                              memcpy (buffer,SOF_SOS2,33);
                              break;
                        case 1:
                        case 2:
                              memcpy (buffer, SOF_SOS3,33);
                              break;
                  }
            }


            /* CF Image is correct. */
            return 1;
      }
      return 0;
}