Added optional emulation of the jpeg-7 or jpeg-8b API/ABI's

git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@236 632fc199-4ca6-4c93-a231-07263d6284db

1 files changed, 9 insertions, 7 deletions

diff --git a/jdcoefct.c b/jdcoefct.c
index f56af5f..80fc89d 100644
--- a/jdcoefct.c
+++ b/jdcoefct.c
@@ -2,6 +2,7 @@
  * jdcoefct.c
  *
  * Copyright (C) 1994-1997, Thomas G. Lane.
+ * Copyright (C) 2010, D. R. Commander.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -17,6 +18,7 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
+#include "jpegcomp.h"
 
 /* Block smoothing is only applicable for progressive JPEG, so: */
 #ifndef D_PROGRESSIVE_SUPPORTED
@@ -190,7 +192,7 @@ decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
 	useful_width = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
 						    : compptr->last_col_width;
 	output_ptr = output_buf[compptr->component_index] +
-	  yoffset * compptr->DCT_scaled_size;
+	  yoffset * _DCT_scaled_size;
 	start_col = MCU_col_num * compptr->MCU_sample_width;
 	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
 	  if (cinfo->input_iMCU_row < last_iMCU_row ||
@@ -200,11 +202,11 @@ decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
 	      (*inverse_DCT) (cinfo, compptr,
 			      (JCOEFPTR) coef->MCU_buffer[blkn+xindex],
 			      output_ptr, output_col);
-	      output_col += compptr->DCT_scaled_size;
+	      output_col += _DCT_scaled_size;
 	    }
 	  }
 	  blkn += compptr->MCU_width;
-	  output_ptr += compptr->DCT_scaled_size;
+	  output_ptr += _DCT_scaled_size;
 	}
       }
     }
@@ -365,9 +367,9 @@ decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
 	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) buffer_ptr,
 			output_ptr, output_col);
 	buffer_ptr++;
-	output_col += compptr->DCT_scaled_size;
+	output_col += _DCT_scaled_size;
       }
-      output_ptr += compptr->DCT_scaled_size;
+      output_ptr += _DCT_scaled_size;
     }
   }
 
@@ -660,9 +662,9 @@ decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
 	DC4 = DC5; DC5 = DC6;
 	DC7 = DC8; DC8 = DC9;
 	buffer_ptr++, prev_block_row++, next_block_row++;
-	output_col += compptr->DCT_scaled_size;
+	output_col += _DCT_scaled_size;
       }
-      output_ptr += compptr->DCT_scaled_size;
+      output_ptr += _DCT_scaled_size;
     }
   }