reverted libjpeg to an earlier version

3rdparty/libjpeg/jdmarker.c

@@ -2,7 +2,6 @@
  * jdmarker.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2009 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -235,8 +234,7 @@ get_soi (j_decompress_ptr cinfo)
 
 
 LOCAL(boolean)
-get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
-	 boolean is_arith)
+get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)
 /* Process a SOFn marker */
 {
   INT32 length;
@@ -244,7 +242,6 @@ get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
   jpeg_component_info * compptr;
   INPUT_VARS(cinfo);
 
-  cinfo->is_baseline = is_baseline;
   cinfo->progressive_mode = is_prog;
   cinfo->arith_code = is_arith;
 
@@ -318,9 +315,7 @@ get_sos (j_decompress_ptr cinfo)
 
   TRACEMS1(cinfo, 1, JTRC_SOS, n);
 
-  if (length != (n * 2 + 6) || n > MAX_COMPS_IN_SCAN ||
-      (n == 0 && !cinfo->progressive_mode))
-      /* pseudo SOS marker only allowed in progressive mode */
+  if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN)
     ERREXIT(cinfo, JERR_BAD_LENGTH);
 
   cinfo->comps_in_scan = n;
@@ -364,8 +359,8 @@ get_sos (j_decompress_ptr cinfo)
   /* Prepare to scan data & restart markers */
   cinfo->marker->next_restart_num = 0;
 
-  /* Count another (non-pseudo) SOS marker */
-  if (n) cinfo->input_scan_number++;
+  /* Count another SOS marker */
+  cinfo->input_scan_number++;
 
   INPUT_SYNC(cinfo);
   return TRUE;
@@ -495,18 +490,16 @@ LOCAL(boolean)
 get_dqt (j_decompress_ptr cinfo)
 /* Process a DQT marker */
 {
-  INT32 length, count, i;
-  int n, prec;
+  INT32 length;
+  int n, i, prec;
   unsigned int tmp;
   JQUANT_TBL *quant_ptr;
-  const int *natural_order;
   INPUT_VARS(cinfo);
 
   INPUT_2BYTES(cinfo, length, return FALSE);
   length -= 2;
 
   while (length > 0) {
-    length--;
     INPUT_BYTE(cinfo, n, return FALSE);
     prec = n >> 4;
     n &= 0x0F;
@@ -520,43 +513,13 @@ get_dqt (j_decompress_ptr cinfo)
       cinfo->quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) cinfo);
     quant_ptr = cinfo->quant_tbl_ptrs[n];
 
-    if (prec) {
-      if (length < DCTSIZE2 * 2) {
-	/* Initialize full table for safety. */
-	for (i = 0; i < DCTSIZE2; i++) {
-	  quant_ptr->quantval[i] = 1;
-	}
-	count = length >> 1;
-      } else
-	count = DCTSIZE2;
-    } else {
-      if (length < DCTSIZE2) {
-	/* Initialize full table for safety. */
-	for (i = 0; i < DCTSIZE2; i++) {
-	  quant_ptr->quantval[i] = 1;
-	}
-	count = length;
-      } else
-	count = DCTSIZE2;
-    }
-
-    switch (count) {
-    case (2*2): natural_order = jpeg_natural_order2; break;
-    case (3*3): natural_order = jpeg_natural_order3; break;
-    case (4*4): natural_order = jpeg_natural_order4; break;
-    case (5*5): natural_order = jpeg_natural_order5; break;
-    case (6*6): natural_order = jpeg_natural_order6; break;
-    case (7*7): natural_order = jpeg_natural_order7; break;
-    default:    natural_order = jpeg_natural_order;  break;
-    }
-
-    for (i = 0; i < count; i++) {
+    for (i = 0; i < DCTSIZE2; i++) {
       if (prec)
 	INPUT_2BYTES(cinfo, tmp, return FALSE);
       else
 	INPUT_BYTE(cinfo, tmp, return FALSE);
       /* We convert the zigzag-order table to natural array order. */
-      quant_ptr->quantval[natural_order[i]] = (UINT16) tmp;
+      quant_ptr->quantval[jpeg_natural_order[i]] = (UINT16) tmp;
     }
 
     if (cinfo->err->trace_level >= 2) {
@@ -569,8 +532,8 @@ get_dqt (j_decompress_ptr cinfo)
       }
     }
 
-    length -= count;
-    if (prec) length -= count;
+    length -= DCTSIZE2+1;
+    if (prec) length -= DCTSIZE2;
   }
 
   if (length != 0)
@@ -983,11 +946,6 @@ first_marker (j_decompress_ptr cinfo)
  *
  * Returns same codes as are defined for jpeg_consume_input:
  * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
- *
- * Note: This function may return a pseudo SOS marker (with zero
- * component number) for treat by input controller's consume_input.
- * consume_input itself should filter out (skip) the pseudo marker
- * after processing for the caller.
  */
 
 METHODDEF(int)
@@ -1017,27 +975,23 @@ read_markers (j_decompress_ptr cinfo)
       break;
 
     case M_SOF0:		/* Baseline */
-      if (! get_sof(cinfo, TRUE, FALSE, FALSE))
-	return JPEG_SUSPENDED;
-      break;
-
     case M_SOF1:		/* Extended sequential, Huffman */
-      if (! get_sof(cinfo, FALSE, FALSE, FALSE))
+      if (! get_sof(cinfo, FALSE, FALSE))
 	return JPEG_SUSPENDED;
       break;
 
     case M_SOF2:		/* Progressive, Huffman */
-      if (! get_sof(cinfo, FALSE, TRUE, FALSE))
+      if (! get_sof(cinfo, TRUE, FALSE))
 	return JPEG_SUSPENDED;
       break;
 
     case M_SOF9:		/* Extended sequential, arithmetic */
-      if (! get_sof(cinfo, FALSE, FALSE, TRUE))
+      if (! get_sof(cinfo, FALSE, TRUE))
 	return JPEG_SUSPENDED;
       break;
 
     case M_SOF10:		/* Progressive, arithmetic */
-      if (! get_sof(cinfo, FALSE, TRUE, TRUE))
+      if (! get_sof(cinfo, TRUE, TRUE))
 	return JPEG_SUSPENDED;
       break;