auto import from //branches/cupcake/...@137197

1 files changed, 267 insertions, 142 deletions

diff --git a/pngtest.c b/pngtest.c
index 60980c2..f5e098f 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.27 - [April 29, 2008]
+ * Last changed in libpng 1.2.32 [September 18, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -37,7 +37,7 @@
 #  include <windows.h>
 #  include <stdlib.h>
 #  define READFILE(file, data, length, check) \
-     if (ReadFile(file, data, length, &check,NULL)) check = 0
+     if (ReadFile(file, data, length, &check, NULL)) check = 0
 #  define WRITEFILE(file, data, length, check)) \
      if (WriteFile(file, data, length, &check, NULL)) check = 0
 #  define FCLOSE(file) CloseHandle(file)
@@ -45,9 +45,9 @@
 #  include <stdio.h>
 #  include <stdlib.h>
 #  define READFILE(file, data, length, check) \
-     check=(png_size_t)fread(data,(png_size_t)1,length,file)
+     check=(png_size_t)fread(data, (png_size_t)1, length, file)
 #  define WRITEFILE(file, data, length, check) \
-     check=(png_size_t)fwrite(data,(png_size_t)1, length, file)
+     check=(png_size_t)fwrite(data, (png_size_t)1, length, file)
 #  define FCLOSE(file) fclose(file)
 #endif
 
@@ -82,9 +82,9 @@ static float t_start, t_stop, t_decode, t_encode, t_misc;
 #endif
 
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
-#define PNG_tIME_STRING_LENGTH 30
-static int tIME_chunk_present=0;
-static char tIME_string[PNG_tIME_STRING_LENGTH] = "no tIME chunk present in file";
+#define PNG_tIME_STRING_LENGTH 29
+static int tIME_chunk_present = 0;
+static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
 #endif
 
 static int verbose = 0;
@@ -99,11 +99,6 @@ int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
 /*  #define STDERR stderr  */
 #define STDERR stdout   /* for DOS */
 
-/* example of using row callbacks to make a simple progress meter */
-static int status_pass=1;
-static int status_dots_requested=0;
-static int status_dots=1;
-
 /* In case a system header (e.g., on AIX) defined jmpbuf */
 #ifdef jmpbuf
 #  undef jmpbuf
@@ -114,6 +109,11 @@ static int status_dots=1;
 #  define png_jmpbuf(png_ptr) png_ptr->jmpbuf
 #endif
 
+/* example of using row callbacks to make a simple progress meter */
+static int status_pass = 1;
+static int status_dots_requested = 0;
+static int status_dots = 1;
+
 void
 #ifdef PNG_1_0_X
 PNGAPI
@@ -125,15 +125,15 @@ PNGAPI
 #endif
 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
 {
-    if(png_ptr == NULL || row_number > PNG_UINT_31_MAX) return;
-    if(status_pass != pass)
+    if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) return;
+    if (status_pass != pass)
     {
-       fprintf(stdout,"\n Pass %d: ",pass);
+       fprintf(stdout, "\n Pass %d: ", pass);
        status_pass = pass;
        status_dots = 31;
     }
     status_dots--;
-    if(status_dots == 0)
+    if (status_dots == 0)
     {
        fprintf(stdout, "\n         ");
        status_dots=30;
@@ -152,7 +152,7 @@ PNGAPI
 #endif
 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
 {
-    if(png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) return;
+    if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) return;
     fprintf(stdout, "w");
 }
 
@@ -173,8 +173,8 @@ PNGAPI
 #endif
 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
 {
-    if(png_ptr != NULL && row_info != NULL)
-      ++filters_used[*(data-1)];
+    if (png_ptr != NULL && row_info != NULL)
+      ++filters_used[*(data - 1)];
 }
 #endif
 
@@ -196,7 +196,7 @@ PNGAPI
 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
 {
    png_bytep dp = data;
-   if(png_ptr == NULL)return;
+   if (png_ptr == NULL)return;
 
    /* contents of row_info:
     *  png_uint_32 width      width of row
@@ -210,44 +210,44 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
 
     /* counts the number of zero samples (or zero pixels if color_type is 3 */
 
-    if(row_info->color_type == 0 || row_info->color_type == 3)
+    if (row_info->color_type == 0 || row_info->color_type == 3)
     {
-       int pos=0;
+       int pos = 0;
        png_uint_32 n, nstop;
-       for (n=0, nstop=row_info->width; n<nstop; n++)
+       for (n = 0, nstop=row_info->width; n<nstop; n++)
        {
-          if(row_info->bit_depth == 1)
+          if (row_info->bit_depth == 1)
           {
-             if(((*dp << pos++ ) & 0x80) == 0) zero_samples++;
-             if(pos == 8)
+             if (((*dp << pos++ ) & 0x80) == 0) zero_samples++;
+             if (pos == 8)
              {
                 pos = 0;
                 dp++;
              }
           }
-          if(row_info->bit_depth == 2)
+          if (row_info->bit_depth == 2)
           {
-             if(((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++;
-             if(pos == 8)
+             if (((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++;
+             if (pos == 8)
              {
                 pos = 0;
                 dp++;
              }
           }
-          if(row_info->bit_depth == 4)
+          if (row_info->bit_depth == 4)
           {
-             if(((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++;
-             if(pos == 8)
+             if (((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++;
+             if (pos == 8)
              {
                 pos = 0;
                 dp++;
              }
           }
-          if(row_info->bit_depth == 8)
-             if(*dp++ == 0) zero_samples++;
-          if(row_info->bit_depth == 16)
+          if (row_info->bit_depth == 8)
+             if (*dp++ == 0) zero_samples++;
+          if (row_info->bit_depth == 16)
           {
-             if((*dp | *(dp+1)) == 0) zero_samples++;
+             if ((*dp | *(dp+1)) == 0) zero_samples++;
              dp+=2;
           }
        }
@@ -257,24 +257,24 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
        png_uint_32 n, nstop;
        int channel;
        int color_channels = row_info->channels;
-       if(row_info->color_type > 3)color_channels--;
+       if (row_info->color_type > 3)color_channels--;
 
-       for (n=0, nstop=row_info->width; n<nstop; n++)
+       for (n = 0, nstop=row_info->width; n<nstop; n++)
        {
           for (channel = 0; channel < color_channels; channel++)
           {
-             if(row_info->bit_depth == 8)
-                if(*dp++ == 0) zero_samples++;
-             if(row_info->bit_depth == 16)
+             if (row_info->bit_depth == 8)
+                if (*dp++ == 0) zero_samples++;
+             if (row_info->bit_depth == 16)
              {
-                if((*dp | *(dp+1)) == 0) zero_samples++;
+                if ((*dp | *(dp+1)) == 0) zero_samples++;
                 dp+=2;
              }
           }
-          if(row_info->color_type > 3)
+          if (row_info->color_type > 3)
           {
              dp++;
-             if(row_info->bit_depth == 16)dp++;
+             if (row_info->bit_depth == 16)dp++;
           }
        }
     }
@@ -342,7 +342,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
          read = MIN(NEAR_BUF_SIZE, remaining);
          READFILE(io_ptr, buf, 1, err);
          png_memcpy(data, buf, read); /* copy far buffer to near buffer */
-         if(err != read)
+         if (err != read)
             break;
          else
             check += err;
@@ -436,8 +436,6 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
    }
 }
 #endif /* USE_FAR_KEYWORD */
-#endif /* PNG_NO_STDIO */
-/* END of code to validate stdio-free compilation */
 
 /* This function is called when there is a warning, but the library thinks
  * it can continue anyway.  Replacement functions don't have to do anything
@@ -465,6 +463,8 @@ pngtest_error(png_structp png_ptr, png_const_charp message)
    /* We can return because png_error calls the default handler, which is
     * actually OK in this case. */
 }
+#endif /* PNG_NO_STDIO */
+/* END of code to validate stdio-free compilation */
 
 /* START of code to validate memory allocation and deallocation */
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
@@ -511,7 +511,7 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
       memory_infop pinfo;
       png_set_mem_fn(png_ptr, NULL, NULL, NULL);
       pinfo = (memory_infop)png_malloc(png_ptr,
-         (png_uint_32)png_sizeof (*pinfo));
+         (png_uint_32)png_sizeof(*pinfo));
       pinfo->size = size;
       current_allocation += size;
       total_allocation += size;
@@ -520,8 +520,9 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
          maximum_allocation = current_allocation;
       pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
       /* Restore malloc_fn and free_fn */
-      png_set_mem_fn(png_ptr, png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
-         (png_free_ptr)png_debug_free);
+      png_set_mem_fn(png_ptr,
+          png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
+          (png_free_ptr)png_debug_free);
       if (size != 0 && pinfo->pointer == NULL)
       {
          current_allocation -= size;
@@ -533,9 +534,9 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
       pinformation = pinfo;
       /* Make sure the caller isn't assuming zeroed memory. */
       png_memset(pinfo->pointer, 0xdd, pinfo->size);
-      if(verbose)
-         printf("png_malloc %lu bytes at %x\n",(unsigned long)size,
-          pinfo->pointer);
+      if (verbose)
+         printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
+            pinfo->pointer);
       return (png_voidp)(pinfo->pointer);
    }
 }
@@ -570,7 +571,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)
                the memory that is to be freed. */
             png_memset(ptr, 0x55, pinfo->size);
             png_free_default(png_ptr, pinfo);
-            pinfo=NULL;
+            pinfo = NULL;
             break;
          }
          if (pinfo->next == NULL)
@@ -583,14 +584,81 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)
    }
 
    /* Finally free the data. */
-   if(verbose)
-      printf("Freeing %x\n",ptr);
+   if (verbose)
+      printf("Freeing %x\n", ptr);
    png_free_default(png_ptr, ptr);
-   ptr=NULL;
+   ptr = NULL;
 }
 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
 /* END of code to test memory allocation/deallocation */
 
+
+/* Demonstration of user chunk support of the sTER and vpAg chunks */
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+
+/* (sTER is a public chunk not yet understood by libpng.  vpAg is a private
+chunk used in ImageMagick to store "virtual page" size).  */
+
+static png_uint_32 user_chunk_data[4];
+
+    /* 0: sTER mode + 1
+     * 1: vpAg width
+     * 2: vpAg height
+     * 3: vpAg units
+     */
+
+static int read_user_chunk_callback(png_struct *png_ptr,
+   png_unknown_chunkp chunk)
+{
+  png_uint_32
+    *user_chunk_data;
+
+  /* Return one of the following: */
+     /* return (-n);  chunk had an error */
+     /* return (0);  did not recognize */
+     /* return (n);  success */
+
+  /* The unknown chunk structure contains the chunk data:
+   * png_byte name[5];
+   * png_byte *data;
+   * png_size_t size;
+   *
+   *  Note that libpng has already taken care of the CRC handling.
+   */
+
+  if (chunk->name[0] == 115 && chunk->name[1] ==  84 &&     /* s  T */
+      chunk->name[2] ==  69 && chunk->name[3] ==  82)       /* E  R */
+     {
+       /* Found sTER chunk */
+       if (chunk->size != 1)
+         return (-1); /* Error return */
+       if (chunk->data[0] != 0 && chunk->data[0] != 1)
+          return (-1);  /* Invalid mode */
+       user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+       user_chunk_data[0]=chunk->data[0]+1;
+       return (1);
+     }
+  if (chunk->name[0] != 118 || chunk->name[1] != 112 ||    /* v  p */
+      chunk->name[2] !=  65 || chunk->name[3] != 103)      /* A  g */
+    return (0); /* Did not recognize */
+
+  /* Found ImageMagick vpAg chunk */
+
+  if (chunk->size != 9)
+    return (-1); /* Error return */
+
+  user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+
+  user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
+  user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
+  user_chunk_data[3]=(png_uint_32)chunk->data[8];
+
+  return (1);
+
+}
+#endif
+/* END of code to demonstrate user chunk support */
+
 /* Test one file */
 int
 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
@@ -649,30 +717,48 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       return (1);
    }
 
-   png_debug(0, "Allocating read and write structures\n");
+   png_debug(0, "Allocating read and write structures");
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
-   read_ptr = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+   read_ptr =
+      png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
       png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
       (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
 #else
-   read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+   read_ptr =
+      png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
       png_error_ptr_NULL, png_error_ptr_NULL);
 #endif
+#if defined(PNG_NO_STDIO)
    png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
        pngtest_warning);
+#endif
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+  user_chunk_data[0] = 0;
+  user_chunk_data[1] = 0;
+  user_chunk_data[2] = 0;
+  user_chunk_data[3] = 0;
+  png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
+    read_user_chunk_callback);
+
+#endif
 #ifdef PNG_WRITE_SUPPORTED
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
-   write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+   write_ptr =
+      png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
       png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
       (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
 #else
-   write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+   write_ptr =
+      png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
       png_error_ptr_NULL, png_error_ptr_NULL);
 #endif
+#if defined(PNG_NO_STDIO)
    png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
        pngtest_warning);
 #endif
-   png_debug(0, "Allocating read_info, write_info and end_info structures\n");
+#endif
+   png_debug(0, "Allocating read_info, write_info and end_info structures");
    read_info_ptr = png_create_info_struct(read_ptr);
    end_info_ptr = png_create_info_struct(read_ptr);
 #ifdef PNG_WRITE_SUPPORTED
@@ -681,7 +767,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
-   png_debug(0, "Setting jmpbuf for read struct\n");
+   png_debug(0, "Setting jmpbuf for read struct");
 #ifdef USE_FAR_KEYWORD
    if (setjmp(jmpbuf))
 #else
@@ -690,6 +776,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    {
       fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
       png_free(read_ptr, row_buf);
+      row_buf = NULL;
       png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
 #ifdef PNG_WRITE_SUPPORTED
       png_destroy_info_struct(write_ptr, &write_end_info_ptr);
@@ -700,11 +787,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       return (1);
    }
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(read_ptr),jmpbuf,png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
 #endif
 
 #ifdef PNG_WRITE_SUPPORTED
-   png_debug(0, "Setting jmpbuf for write struct\n");
+   png_debug(0, "Setting jmpbuf for write struct");
 #ifdef USE_FAR_KEYWORD
    if (setjmp(jmpbuf))
 #else
@@ -722,12 +809,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       return (1);
    }
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(write_ptr),jmpbuf,png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
 #endif
 #endif
 #endif
 
-   png_debug(0, "Initializing input and output streams\n");
+   png_debug(0, "Initializing input and output streams");
 #if !defined(PNG_NO_STDIO)
    png_init_io(read_ptr, fpin);
 #  ifdef PNG_WRITE_SUPPORTED
@@ -744,7 +831,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #    endif
 #  endif
 #endif
-   if(status_dots_requested == 1)
+   if (status_dots_requested == 1)
    {
 #ifdef PNG_WRITE_SUPPORTED
       png_set_write_status_fn(write_ptr, write_row_callback);
@@ -762,13 +849,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
    {
      int i;
-     for(i=0; i<256; i++)
-        filters_used[i]=0;
+     for (i = 0; i<256; i++)
+        filters_used[i] = 0;
      png_set_read_user_transform_fn(read_ptr, count_filters);
    }
 #endif
 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-   zero_samples=0;
+   zero_samples = 0;
    png_set_write_user_transform_fn(write_ptr, count_zero_samples);
 #endif
 
@@ -787,10 +874,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       png_bytep_NULL, 0);
 #endif
 
-   png_debug(0, "Reading info struct\n");
+   png_debug(0, "Reading info struct");
    png_read_info(read_ptr, read_info_ptr);
 
-   png_debug(0, "Transferring info struct\n");
+   png_debug(0, "Transferring info struct");
    {
       int interlace_type, compression_type, filter_type;
 
@@ -913,7 +1000,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       png_int_32 offset_x, offset_y;
       int unit_type;
 
-      if (png_get_oFFs(read_ptr, read_info_ptr,&offset_x,&offset_y,&unit_type))
+      if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
+         &unit_type))
       {
          png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
       }
@@ -989,7 +1077,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 
       if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
       {
-         png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks\n", num_text);
+         png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
          png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
       }
    }
@@ -1006,9 +1094,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
             pointed to by png_convert_to_rfc1123() gets free'ed before
             we use it */
          png_memcpy(tIME_string,
-                    png_convert_to_rfc1123(read_ptr, mod_time), 
+                    png_convert_to_rfc1123(read_ptr, mod_time),
                     png_sizeof(tIME_string));
-         tIME_string[png_sizeof(tIME_string)-1] = '\0';
+         tIME_string[png_sizeof(tIME_string) - 1] = '\0';
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1057,21 +1145,55 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 
 #ifdef PNG_WRITE_SUPPORTED
-   png_debug(0, "\nWriting info struct\n");
+   png_debug(0, "Writing info struct");
 
 /* If we wanted, we could write info in two steps:
    png_write_info_before_PLTE(write_ptr, write_info_ptr);
  */
    png_write_info(write_ptr, write_info_ptr);
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+   if (user_chunk_data[0] != 0)
+   {
+     png_byte png_sTER[5] = {115,  84,  69,  82, '\0'};
+
+     unsigned char
+       ster_chunk_data[1];
+
+     if (verbose)
+        fprintf(STDERR, "stereo mode = %lu\n",
+          (unsigned long)(user_chunk_data[0] - 1));
+     ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
+     png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
+   }
+   if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
+   {
+     png_byte png_vpAg[5] = {118, 112,  65, 103, '\0'};
+
+     unsigned char
+       vpag_chunk_data[9];
+
+     if (verbose)
+        fprintf(STDERR, "vpAg = %lu x %lu, units=%lu\n",
+          (unsigned long)user_chunk_data[1],
+          (unsigned long)user_chunk_data[2],
+          (unsigned long)user_chunk_data[3]);
+     png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
+     png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
+     vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
+     png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
+   }
+
+#endif
 #endif
 
 #ifdef SINGLE_ROWBUF_ALLOC
-   png_debug(0, "\nAllocating row buffer...");
+   png_debug(0, "Allocating row buffer...");
    row_buf = (png_bytep)png_malloc(read_ptr,
       png_get_rowbytes(read_ptr, read_info_ptr));
-   png_debug1(0, "0x%08lx\n\n", (unsigned long)row_buf);
+   png_debug1(0, "0x%08lx", (unsigned long)row_buf);
 #endif /* SINGLE_ROWBUF_ALLOC */
-   png_debug(0, "Writing row data\n");
+   png_debug(0, "Writing row data");
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
   defined(PNG_WRITE_INTERLACING_SUPPORTED)
@@ -1080,7 +1202,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    png_set_interlace_handling(write_ptr);
 #  endif
 #else
-   num_pass=1;
+   num_pass = 1;
 #endif
 
 #ifdef PNGTEST_TIMING
@@ -1090,14 +1212,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
    for (pass = 0; pass < num_pass; pass++)
    {
-      png_debug1(0, "Writing row data for pass %d\n",pass);
+      png_debug1(0, "Writing row data for pass %d", pass);
       for (y = 0; y < height; y++)
       {
 #ifndef SINGLE_ROWBUF_ALLOC
-         png_debug2(0, "\nAllocating row buffer (pass %d, y = %ld)...", pass,y);
+         png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
          row_buf = (png_bytep)png_malloc(read_ptr,
             png_get_rowbytes(read_ptr, read_info_ptr));
-         png_debug2(0, "0x%08lx (%ld bytes)\n", (unsigned long)row_buf,
+         png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
             png_get_rowbytes(read_ptr, read_info_ptr));
 #endif /* !SINGLE_ROWBUF_ALLOC */
          png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
@@ -1117,8 +1239,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif /* PNG_WRITE_SUPPORTED */
 
 #ifndef SINGLE_ROWBUF_ALLOC
-         png_debug2(0, "Freeing row buffer (pass %d, y = %ld)\n\n", pass, y);
+         png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
          png_free(read_ptr, row_buf);
+         row_buf = NULL;
 #endif /* !SINGLE_ROWBUF_ALLOC */
       }
    }
@@ -1130,7 +1253,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
 #endif
 
-   png_debug(0, "Reading and writing end_info data\n");
+   png_debug(0, "Reading and writing end_info data");
 
    png_read_end(read_ptr, end_info_ptr);
 #if defined(PNG_TEXT_SUPPORTED)
@@ -1140,7 +1263,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 
       if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
       {
-         png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks\n", num_text);
+         png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
          png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
       }
    }
@@ -1159,7 +1282,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
          png_memcpy(tIME_string,
                     png_convert_to_rfc1123(read_ptr, mod_time),
                     png_sizeof(tIME_string));
-         tIME_string[png_sizeof(tIME_string)-1] = '\0';
+         tIME_string[png_sizeof(tIME_string) - 1] = '\0';
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1190,7 +1313,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 
 #ifdef PNG_EASY_ACCESS_SUPPORTED
-   if(verbose)
+   if (verbose)
    {
       png_uint_32 iwidth, iheight;
       iwidth = png_get_image_width(write_ptr, write_info_ptr);
@@ -1200,26 +1323,26 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    }
 #endif
 
-   png_debug(0, "Destroying data structs\n");
+   png_debug(0, "Destroying data structs");
 #ifdef SINGLE_ROWBUF_ALLOC
-   png_debug(1, "destroying row_buf for read_ptr\n");
+   png_debug(1, "destroying row_buf for read_ptr");
    png_free(read_ptr, row_buf);
-   row_buf=NULL;
+   row_buf = NULL;
 #endif /* SINGLE_ROWBUF_ALLOC */
-   png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr\n");
+   png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
    png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
 #ifdef PNG_WRITE_SUPPORTED
-   png_debug(1, "destroying write_end_info_ptr\n");
+   png_debug(1, "destroying write_end_info_ptr");
    png_destroy_info_struct(write_ptr, &write_end_info_ptr);
-   png_debug(1, "destroying write_ptr, write_info_ptr\n");
+   png_debug(1, "destroying write_ptr, write_info_ptr");
    png_destroy_write_struct(&write_ptr, &write_info_ptr);
 #endif
-   png_debug(0, "Destruction complete.\n");
+   png_debug(0, "Destruction complete.");
 
    FCLOSE(fpin);
    FCLOSE(fpout);
 
-   png_debug(0, "Opening files for comparison\n");
+   png_debug(0, "Opening files for comparison");
 #if defined(_WIN32_WCE)
    MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
    if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
@@ -1243,28 +1366,28 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       return (1);
    }
 
-   for(;;)
+   for (;;)
    {
       png_size_t num_in, num_out;
 
-      READFILE(fpin, inbuf, 1, num_in);
-      READFILE(fpout, outbuf, 1, num_out);
+         READFILE(fpin, inbuf, 1, num_in);
+         READFILE(fpout, outbuf, 1, num_out);
 
       if (num_in != num_out)
       {
          fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
                  inname, outname);
-         if(wrote_question == 0)
+         if (wrote_question == 0)
          {
             fprintf(STDERR,
          "   Was %s written with the same maximum IDAT chunk size (%d bytes),",
-              inname,PNG_ZBUF_SIZE);
+              inname, PNG_ZBUF_SIZE);
             fprintf(STDERR,
               "\n   filtering heuristic (libpng default), compression");
             fprintf(STDERR,
               " level (zlib default),\n   and zlib version (%s)?\n\n",
               ZLIB_VERSION);
-            wrote_question=1;
+            wrote_question = 1;
          }
          FCLOSE(fpin);
          FCLOSE(fpout);
@@ -1277,17 +1400,17 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       if (png_memcmp(inbuf, outbuf, num_in))
       {
          fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
-         if(wrote_question == 0)
+         if (wrote_question == 0)
          {
             fprintf(STDERR,
          "   Was %s written with the same maximum IDAT chunk size (%d bytes),",
-                 inname,PNG_ZBUF_SIZE);
+                 inname, PNG_ZBUF_SIZE);
             fprintf(STDERR,
               "\n   filtering heuristic (libpng default), compression");
             fprintf(STDERR,
               " level (zlib default),\n   and zlib version (%s)?\n\n",
               ZLIB_VERSION);
-            wrote_question=1;
+            wrote_question = 1;
          }
          FCLOSE(fpin);
          FCLOSE(fpout);
@@ -1318,15 +1441,15 @@ main(int argc, char *argv[])
 
    fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
    fprintf(STDERR, "   with zlib   version %s\n", ZLIB_VERSION);
-   fprintf(STDERR,"%s",png_get_copyright(NULL));
+   fprintf(STDERR, "%s", png_get_copyright(NULL));
    /* Show the version of libpng used in building the library */
-   fprintf(STDERR," library (%lu):%s",
+   fprintf(STDERR, " library (%lu):%s",
       (unsigned long)png_access_version_number(),
       png_get_header_version(NULL));
    /* Show the version of libpng used in building the application */
-   fprintf(STDERR," pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
+   fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
       PNG_HEADER_VERSION_STRING);
-   fprintf(STDERR," png_sizeof(png_struct)=%ld, png_sizeof(png_info)=%ld\n",
+   fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
                     (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
 
    /* Do some consistency checking on the memory allocation settings, I'm
@@ -1377,10 +1500,10 @@ main(int argc, char *argv[])
       }
    }
 
-   if (!multiple && argc == 3+verbose)
-     outname = argv[2+verbose];
+   if (!multiple && argc == 3 + verbose)
+     outname = argv[2 + verbose];
 
-   if ((!multiple && argc > 3+verbose) || (multiple && argc < 2))
+   if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
    {
      fprintf(STDERR,
        "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
@@ -1404,7 +1527,7 @@ main(int argc, char *argv[])
          int k;
 #endif
          int kerror;
-         fprintf(STDERR, "Testing %s:",argv[i]);
+         fprintf(STDERR, "Testing %s:", argv[i]);
          kerror = test_one_file(argv[i], outname);
          if (kerror == 0)
          {
@@ -1415,14 +1538,14 @@ main(int argc, char *argv[])
             fprintf(STDERR, " PASS\n");
 #endif
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
-            for (k=0; k<256; k++)
-               if(filters_used[k])
+            for (k = 0; k<256; k++)
+               if (filters_used[k])
                   fprintf(STDERR, " Filter %d was used %lu times\n",
-                     k,(unsigned long)filters_used[k]);
+                     k, (unsigned long)filters_used[k]);
 #endif
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
-         if(tIME_chunk_present != 0)
-            fprintf(STDERR, " tIME = %s\n",tIME_string);
+         if (tIME_chunk_present != 0)
+            fprintf(STDERR, " tIME = %s\n", tIME_string);
          tIME_chunk_present = 0;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
          }
@@ -1434,7 +1557,7 @@ main(int argc, char *argv[])
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
          if (allocation_now != current_allocation)
             fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
-               current_allocation-allocation_now);
+               current_allocation - allocation_now);
          if (current_allocation != 0)
          {
             memory_infop pinfo = pinformation;
@@ -1443,7 +1566,8 @@ main(int argc, char *argv[])
                current_allocation);
             while (pinfo != NULL)
             {
-               fprintf(STDERR, " %lu bytes at %x\n", (unsigned long)pinfo->size,
+               fprintf(STDERR, " %lu bytes at %x\n",
+                 (unsigned long)pinfo->size,
                  (unsigned int) pinfo->pointer);
                pinfo = pinfo->next;
             }
@@ -1464,20 +1588,20 @@ main(int argc, char *argv[])
    else
    {
       int i;
-      for (i=0; i<3; ++i)
+      for (i = 0; i<3; ++i)
       {
          int kerror;
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
          int allocation_now = current_allocation;
 #endif
          if (i == 1) status_dots_requested = 1;
-         else if(verbose == 0)status_dots_requested = 0;
+         else if (verbose == 0)status_dots_requested = 0;
          if (i == 0 || verbose == 1 || ierror != 0)
-            fprintf(STDERR, "Testing %s:",inname);
+            fprintf(STDERR, "Testing %s:", inname);
          kerror = test_one_file(inname, outname);
-         if(kerror == 0)
+         if (kerror == 0)
          {
-            if(verbose == 1 || i == 2)
+            if (verbose == 1 || i == 2)
             {
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
                 int k;
@@ -1489,28 +1613,29 @@ main(int argc, char *argv[])
                 fprintf(STDERR, " PASS\n");
 #endif
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
-                for (k=0; k<256; k++)
-                   if(filters_used[k])
+                for (k = 0; k<256; k++)
+                   if (filters_used[k])
                       fprintf(STDERR, " Filter %d was used %lu times\n",
-                         k,(unsigned long)filters_used[k]);
+                         k,
+                         (unsigned long)filters_used[k]);
 #endif
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
-             if(tIME_chunk_present != 0)
-                fprintf(STDERR, " tIME = %s\n",tIME_string);
+             if (tIME_chunk_present != 0)
+                fprintf(STDERR, " tIME = %s\n", tIME_string);
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
             }
          }
          else
          {
-            if(verbose == 0 && i != 2)
-               fprintf(STDERR, "Testing %s:",inname);
+            if (verbose == 0 && i != 2)
+               fprintf(STDERR, "Testing %s:", inname);
             fprintf(STDERR, " FAIL\n");
             ierror += kerror;
          }
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
          if (allocation_now != current_allocation)
              fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
-               current_allocation-allocation_now);
+               current_allocation - allocation_now);
          if (current_allocation != 0)
          {
              memory_infop pinfo = pinformation;
@@ -1519,7 +1644,7 @@ main(int argc, char *argv[])
                 current_allocation);
              while (pinfo != NULL)
              {
-                fprintf(STDERR," %lu bytes at %x\n",
+                fprintf(STDERR, " %lu bytes at %x\n",
                    (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
                 pinfo = pinfo->next;
              }
@@ -1542,13 +1667,13 @@ main(int argc, char *argv[])
    t_stop = (float)clock();
    t_misc += (t_stop - t_start);
    t_start = t_stop;
-   fprintf(STDERR," CPU time used = %.3f seconds",
+   fprintf(STDERR, " CPU time used = %.3f seconds",
       (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
-   fprintf(STDERR," (decoding %.3f,\n",
+   fprintf(STDERR, " (decoding %.3f,\n",
       t_decode/(float)CLOCKS_PER_SEC);
-   fprintf(STDERR,"        encoding %.3f ,",
+   fprintf(STDERR, "        encoding %.3f ,",
       t_encode/(float)CLOCKS_PER_SEC);
-   fprintf(STDERR," other %.3f seconds)\n\n",
+   fprintf(STDERR, " other %.3f seconds)\n\n",
       t_misc/(float)CLOCKS_PER_SEC);
 #endif
 
@@ -1560,4 +1685,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_29 your_png_h_is_not_version_1_2_29;
+typedef version_1_2_35 your_png_h_is_not_version_1_2_35;