text: #include "ImageProc.h"
  #include "ffmpeg_opt.h"
  
  METHODDEF(void)
  my_error_exit (j_common_ptr cinfo)
  {
  	my_error_ptr myerr = (my_error_ptr) cinfo->err;
  	(*cinfo->err->output_message) (cinfo);
  	longjmp(myerr->setjmp_buffer, 1);
  }
  
  GLOBAL(void)
  jpeg_memory_src (j_decompress_ptr cinfo, void* data, unsigned long len)
  {
  	memory_src_ptr src;
  
  	if (cinfo->src == NULL) {
  	cinfo->src = (struct jpeg_source_mgr *)
  	(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
  		sizeof(memory_source_mgr));
  	}
  
  	src = (memory_src_ptr) cinfo->src;
  
  	src->pub.init_source = memory_init_source;
  	src->pub.fill_input_buffer = memory_fill_input_buffer;
  	src->pub.skip_input_data = memory_skip_input_data;
  	src->pub.resync_to_restart = jpeg_resync_to_restart;
  	src->pub.term_source = memory_term_source;
  	src->pub.bytes_in_buffer = 0;
  	src->pub.next_input_byte = (JOCTET*)data;
  
  	src->skip =0;
  }
  
  METHODDEF(void) memory_init_source (j_decompress_ptr cinfo)
  {
  }
  
  
  METHODDEF(boolean) memory_fill_input_buffer (j_decompress_ptr cinfo)
  {
  	return FALSE;
  }
  
  METHODDEF(void) memory_skip_input_data (j_decompress_ptr cinfo, long num_bytes)
  {
  	memory_src_ptr src = (memory_src_ptr) cinfo->src;
  
  	if (num_bytes > (long)src->pub.bytes_in_buffer) {
  		src->skip = (int)(num_bytes - src->pub.bytes_in_buffer);
  		src->pub.next_input_byte += src->pub.bytes_in_buffer;
  		src->pub.bytes_in_buffer = 0;
  	}else{
  		src->pub.next_input_byte += (size_t) num_bytes;
  		src->pub.bytes_in_buffer -= (size_t) num_bytes;
  		src->skip=0;
  	}
  }
  
  METHODDEF(void) memory_term_source (j_decompress_ptr cinfo)
  {
  }
  
  static
  unsigned char my_jpeg_odml_dht[0x1a4] = {
      0xff, 0xc4, 0x01, 0xa2,
  
      0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
  
      0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
      0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
  
      0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04,
      0x04, 0x00, 0x00, 0x01, 0x7d,
      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,
  
      0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04,
      0x04, 0x00, 0x01, 0x02, 0x77,
      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
  };
  
  static
  int my_jpeg_load_dht (struct jpeg_decompress_struct *info, unsigned char *dht,
                JHUFF_TBL *ac_tables[], JHUFF_TBL *dc_tables[])
  {
      unsigned int length = (dht[2] << 8) + dht[3] - 2;
      unsigned int pos = 4;
      unsigned int count, i;
      int index;
  
      JHUFF_TBL **hufftbl;
      unsigned char bits[17];
      unsigned char huffval[256];
  
      while (length > 16)
      {
         bits[0] = 0;
         index = dht[pos++];
         count = 0;
         for (i = 1; i <= 16; ++i)
         {
             bits[i] = dht[pos++];
             count += bits[i];
         }
         length -= 17;
  
         if (count > 256 || count > length)
             return -1;
  
         for (i = 0; i < count; ++i)
             huffval[i] = dht[pos++];
         length -= count;
  
         if (index & 0x10)
         {
             index -= 0x10;
             hufftbl = &ac_tables[index];
         }
         else
             hufftbl = &dc_tables[index];
  
         if (index < 0 || index >= NUM_HUFF_TBLS)
             return -1;
  
         if (*hufftbl == NULL)
             *hufftbl = jpeg_alloc_huff_table ((j_common_ptr)info);
         if (*hufftbl == NULL)
             return -1;
  
         memcpy ((*hufftbl)->bits, bits, sizeof (*hufftbl)->bits);
         memcpy ((*hufftbl)->huffval, huffval, sizeof (*hufftbl)->huffval);
      }
  
      if (length != 0)
         return -1;
  
      return 0;
  }
  
  void processimage (const void *p, void *outbuf, int l)
  {
  
  	struct jpeg_decompress_struct mycinfo;
  	struct my_error_mgr myjerr;
  	JSAMPARRAY jpegbuffer=NULL;
  	int row_stride;
  
  LOGI("enter processimage");
  	mycinfo.err = jpeg_std_error(&myjerr.pub);
  	myjerr.pub.error_exit = my_error_exit;
  	if (setjmp(myjerr.setjmp_buffer)) {
  		jpeg_destroy_decompress(&mycinfo);
  		return ;/*exit(0);*/
  	}
  	LOGI("enter processimage 01");
  	jpeg_create_decompress(&mycinfo);
  
  	jpeg_memory_src(&mycinfo, p, l) ;
  
  	((memory_source_mgr *)mycinfo.src)->pub.next_input_byte = (JOCTET*)p;
  	((memory_source_mgr *)mycinfo.src)->pub.bytes_in_buffer = l;
  LOGI("enter processimage 02");
  	jpeg_read_header(&mycinfo, TRUE);
  LOGI("enter processimage 02-1");
  	mycinfo.out_color_space = JCS_RGB;
  	mycinfo.dct_method = JDCT_IFAST;
  	mycinfo.jpeg_color_space = JCS_YCbCr;
  LOGI("enter processimage 03");
  	my_jpeg_load_dht( &mycinfo, 
  		my_jpeg_odml_dht, 
  		mycinfo.ac_huff_tbl_ptrs, 
  		mycinfo.dc_huff_tbl_ptrs ); 
  LOGI("enter processimage 04");
  	jpeg_start_decompress(&mycinfo);
  LOGI("enter processimage 05");
  	row_stride = mycinfo.image_width * mycinfo.num_components;
  LOGI("with = %d  height=%d",mycinfo.image_width,mycinfo.image_height);
  	if(rgb == NULL){
  		IMG_WIDTH=mycinfo.image_width;
  		IMG_HEIGHT=mycinfo.image_height;
  		rgb = (int *)malloc(sizeof(int) * (IMG_WIDTH*IMG_HEIGHT));
  	}
  
  	if(jpegbuffer==NULL){
  		jpegbuffer = (*mycinfo.mem->alloc_sarray)
  			((j_common_ptr) &mycinfo, JPOOL_IMAGE, row_stride, 1);
  	}
  
  	int y = 0;
  	int *outp=rgb;
  	while ( mycinfo.output_scanline < mycinfo.image_height) {
  
  		jpeg_read_scanlines(&mycinfo, jpegbuffer, 1);
  
  		int xx;
  		int x3;
  
  		for(xx = 0, x3 = 0; xx < IMG_WIDTH && x3 < row_stride; xx++, x3 += 3)
  		{
  			outp[y+xx] = 0xff000000 | jpegbuffer[0][x3 + 2]<<16
  				| jpegbuffer[0][x3 + 1]<<8 | jpegbuffer[0][x3 + 0];
  		}
  		y+=IMG_WIDTH;
  	}
  memcpy(outbuf,outp,IMG_WIDTH*IMG_HEIGHT*3);
  	jpeg_finish_decompress(&mycinfo);
  	jpeg_destroy_decompress(&mycinfo);
  	
  }
  